The devlink code is hard to navigate with 13kLoC in one file.
I really like the way Michal split the ethtool into per-command
files and core. It'd probably be too much to split it all up,
but we can at least separate the core parts out of the per-cmd
implementations and put it in a directory so that new commands
can be separate files.
Move the code, subsequent commit will do a partial split.
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
F: Documentation/networking/devlink
F: include/net/devlink.h
F: include/uapi/linux/devlink.h
-F: net/core/devlink.c
+F: net/devlink/
DH ELECTRONICS IMX6 DHCOM/DHCOR BOARD SUPPORT
M: Christoph Niedermaier <cniedermaier@dh-electronics.com>
obj-$(CONFIG_PACKET) += packet/
obj-$(CONFIG_NET_KEY) += key/
obj-$(CONFIG_BRIDGE) += bridge/
+obj-$(CONFIG_NET_DEVLINK) += devlink/
obj-$(CONFIG_NET_DSA) += dsa/
obj-$(CONFIG_ATALK) += appletalk/
obj-$(CONFIG_X25) += x25/
obj-$(CONFIG_LWTUNNEL_BPF) += lwt_bpf.o
obj-$(CONFIG_DST_CACHE) += dst_cache.o
obj-$(CONFIG_HWBM) += hwbm.o
-obj-$(CONFIG_NET_DEVLINK) += devlink.o
obj-$(CONFIG_GRO_CELLS) += gro_cells.o
obj-$(CONFIG_FAILOVER) += failover.o
obj-$(CONFIG_NET_SOCK_MSG) += skmsg.o
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * net/core/devlink.c - Network physical/parent device Netlink interface
- *
- * Heavily inspired by net/wireless/
- * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
- * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
- */
-
-#include <linux/etherdevice.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/gfp.h>
-#include <linux/device.h>
-#include <linux/list.h>
-#include <linux/netdevice.h>
-#include <linux/spinlock.h>
-#include <linux/refcount.h>
-#include <linux/workqueue.h>
-#include <linux/u64_stats_sync.h>
-#include <linux/timekeeping.h>
-#include <rdma/ib_verbs.h>
-#include <net/netlink.h>
-#include <net/genetlink.h>
-#include <net/rtnetlink.h>
-#include <net/net_namespace.h>
-#include <net/sock.h>
-#include <net/devlink.h>
-#define CREATE_TRACE_POINTS
-#include <trace/events/devlink.h>
-
-#define DEVLINK_RELOAD_STATS_ARRAY_SIZE \
- (__DEVLINK_RELOAD_LIMIT_MAX * __DEVLINK_RELOAD_ACTION_MAX)
-
-struct devlink_dev_stats {
- u32 reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
- u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
-};
-
-struct devlink {
- u32 index;
- struct xarray ports;
- struct list_head rate_list;
- struct list_head sb_list;
- struct list_head dpipe_table_list;
- struct list_head resource_list;
- struct list_head param_list;
- struct list_head region_list;
- struct list_head reporter_list;
- struct mutex reporters_lock; /* protects reporter_list */
- struct devlink_dpipe_headers *dpipe_headers;
- struct list_head trap_list;
- struct list_head trap_group_list;
- struct list_head trap_policer_list;
- struct list_head linecard_list;
- struct mutex linecards_lock; /* protects linecard_list */
- const struct devlink_ops *ops;
- u64 features;
- struct xarray snapshot_ids;
- struct devlink_dev_stats stats;
- struct device *dev;
- possible_net_t _net;
- /* Serializes access to devlink instance specific objects such as
- * port, sb, dpipe, resource, params, region, traps and more.
- */
- struct mutex lock;
- struct lock_class_key lock_key;
- u8 reload_failed:1;
- refcount_t refcount;
- struct completion comp;
- struct rcu_head rcu;
- struct notifier_block netdevice_nb;
- char priv[] __aligned(NETDEV_ALIGN);
-};
-
-struct devlink_linecard_ops;
-struct devlink_linecard_type;
-
-struct devlink_linecard {
- struct list_head list;
- struct devlink *devlink;
- unsigned int index;
- refcount_t refcount;
- const struct devlink_linecard_ops *ops;
- void *priv;
- enum devlink_linecard_state state;
- struct mutex state_lock; /* Protects state */
- const char *type;
- struct devlink_linecard_type *types;
- unsigned int types_count;
- struct devlink *nested_devlink;
-};
-
-/**
- * struct devlink_resource - devlink resource
- * @name: name of the resource
- * @id: id, per devlink instance
- * @size: size of the resource
- * @size_new: updated size of the resource, reload is needed
- * @size_valid: valid in case the total size of the resource is valid
- * including its children
- * @parent: parent resource
- * @size_params: size parameters
- * @list: parent list
- * @resource_list: list of child resources
- * @occ_get: occupancy getter callback
- * @occ_get_priv: occupancy getter callback priv
- */
-struct devlink_resource {
- const char *name;
- u64 id;
- u64 size;
- u64 size_new;
- bool size_valid;
- struct devlink_resource *parent;
- struct devlink_resource_size_params size_params;
- struct list_head list;
- struct list_head resource_list;
- devlink_resource_occ_get_t *occ_get;
- void *occ_get_priv;
-};
-
-void *devlink_priv(struct devlink *devlink)
-{
- return &devlink->priv;
-}
-EXPORT_SYMBOL_GPL(devlink_priv);
-
-struct devlink *priv_to_devlink(void *priv)
-{
- return container_of(priv, struct devlink, priv);
-}
-EXPORT_SYMBOL_GPL(priv_to_devlink);
-
-struct device *devlink_to_dev(const struct devlink *devlink)
-{
- return devlink->dev;
-}
-EXPORT_SYMBOL_GPL(devlink_to_dev);
-
-static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
- {
- .name = "destination mac",
- .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
- .bitwidth = 48,
- },
-};
-
-struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
- .name = "ethernet",
- .id = DEVLINK_DPIPE_HEADER_ETHERNET,
- .fields = devlink_dpipe_fields_ethernet,
- .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
- .global = true,
-};
-EXPORT_SYMBOL_GPL(devlink_dpipe_header_ethernet);
-
-static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
- {
- .name = "destination ip",
- .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
- .bitwidth = 32,
- },
-};
-
-struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
- .name = "ipv4",
- .id = DEVLINK_DPIPE_HEADER_IPV4,
- .fields = devlink_dpipe_fields_ipv4,
- .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
- .global = true,
-};
-EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv4);
-
-static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
- {
- .name = "destination ip",
- .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
- .bitwidth = 128,
- },
-};
-
-struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
- .name = "ipv6",
- .id = DEVLINK_DPIPE_HEADER_IPV6,
- .fields = devlink_dpipe_fields_ipv6,
- .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
- .global = true,
-};
-EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv6);
-
-EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
-EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
-EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
-
-#define DEVLINK_PORT_FN_CAPS_VALID_MASK \
- (_BITUL(__DEVLINK_PORT_FN_ATTR_CAPS_MAX) - 1)
-
-static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
- [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
- [DEVLINK_PORT_FN_ATTR_STATE] =
- NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
- DEVLINK_PORT_FN_STATE_ACTIVE),
- [DEVLINK_PORT_FN_ATTR_CAPS] =
- NLA_POLICY_BITFIELD32(DEVLINK_PORT_FN_CAPS_VALID_MASK),
-};
-
-static const struct nla_policy devlink_selftest_nl_policy[DEVLINK_ATTR_SELFTEST_ID_MAX + 1] = {
- [DEVLINK_ATTR_SELFTEST_ID_FLASH] = { .type = NLA_FLAG },
-};
-
-static DEFINE_XARRAY_FLAGS(devlinks, XA_FLAGS_ALLOC);
-#define DEVLINK_REGISTERED XA_MARK_1
-#define DEVLINK_UNREGISTERING XA_MARK_2
-
-/* devlink instances are open to the access from the user space after
- * devlink_register() call. Such logical barrier allows us to have certain
- * expectations related to locking.
- *
- * Before *_register() - we are in initialization stage and no parallel
- * access possible to the devlink instance. All drivers perform that phase
- * by implicitly holding device_lock.
- *
- * After *_register() - users and driver can access devlink instance at
- * the same time.
- */
-#define ASSERT_DEVLINK_REGISTERED(d) \
- WARN_ON_ONCE(!xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
-#define ASSERT_DEVLINK_NOT_REGISTERED(d) \
- WARN_ON_ONCE(xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
-
-struct net *devlink_net(const struct devlink *devlink)
-{
- return read_pnet(&devlink->_net);
-}
-EXPORT_SYMBOL_GPL(devlink_net);
-
-static void __devlink_put_rcu(struct rcu_head *head)
-{
- struct devlink *devlink = container_of(head, struct devlink, rcu);
-
- complete(&devlink->comp);
-}
-
-void devlink_put(struct devlink *devlink)
-{
- if (refcount_dec_and_test(&devlink->refcount))
- /* Make sure unregister operation that may await the completion
- * is unblocked only after all users are after the end of
- * RCU grace period.
- */
- call_rcu(&devlink->rcu, __devlink_put_rcu);
-}
-
-struct devlink *__must_check devlink_try_get(struct devlink *devlink)
-{
- if (refcount_inc_not_zero(&devlink->refcount))
- return devlink;
- return NULL;
-}
-
-void devl_assert_locked(struct devlink *devlink)
-{
- lockdep_assert_held(&devlink->lock);
-}
-EXPORT_SYMBOL_GPL(devl_assert_locked);
-
-#ifdef CONFIG_LOCKDEP
-/* For use in conjunction with LOCKDEP only e.g. rcu_dereference_protected() */
-bool devl_lock_is_held(struct devlink *devlink)
-{
- return lockdep_is_held(&devlink->lock);
-}
-EXPORT_SYMBOL_GPL(devl_lock_is_held);
-#endif
-
-void devl_lock(struct devlink *devlink)
-{
- mutex_lock(&devlink->lock);
-}
-EXPORT_SYMBOL_GPL(devl_lock);
-
-int devl_trylock(struct devlink *devlink)
-{
- return mutex_trylock(&devlink->lock);
-}
-EXPORT_SYMBOL_GPL(devl_trylock);
-
-void devl_unlock(struct devlink *devlink)
-{
- mutex_unlock(&devlink->lock);
-}
-EXPORT_SYMBOL_GPL(devl_unlock);
-
-static struct devlink *
-devlinks_xa_find_get(struct net *net, unsigned long *indexp, xa_mark_t filter,
- void * (*xa_find_fn)(struct xarray *, unsigned long *,
- unsigned long, xa_mark_t))
-{
- struct devlink *devlink;
-
- rcu_read_lock();
-retry:
- devlink = xa_find_fn(&devlinks, indexp, ULONG_MAX, DEVLINK_REGISTERED);
- if (!devlink)
- goto unlock;
-
- /* In case devlink_unregister() was already called and "unregistering"
- * mark was set, do not allow to get a devlink reference here.
- * This prevents live-lock of devlink_unregister() wait for completion.
- */
- if (xa_get_mark(&devlinks, *indexp, DEVLINK_UNREGISTERING))
- goto retry;
-
- /* For a possible retry, the xa_find_after() should be always used */
- xa_find_fn = xa_find_after;
- if (!devlink_try_get(devlink))
- goto retry;
- if (!net_eq(devlink_net(devlink), net)) {
- devlink_put(devlink);
- goto retry;
- }
-unlock:
- rcu_read_unlock();
- return devlink;
-}
-
-static struct devlink *devlinks_xa_find_get_first(struct net *net,
- unsigned long *indexp,
- xa_mark_t filter)
-{
- return devlinks_xa_find_get(net, indexp, filter, xa_find);
-}
-
-static struct devlink *devlinks_xa_find_get_next(struct net *net,
- unsigned long *indexp,
- xa_mark_t filter)
-{
- return devlinks_xa_find_get(net, indexp, filter, xa_find_after);
-}
-
-/* Iterate over devlink pointers which were possible to get reference to.
- * devlink_put() needs to be called for each iterated devlink pointer
- * in loop body in order to release the reference.
- */
-#define devlinks_xa_for_each_get(net, index, devlink, filter) \
- for (index = 0, \
- devlink = devlinks_xa_find_get_first(net, &index, filter); \
- devlink; devlink = devlinks_xa_find_get_next(net, &index, filter))
-
-#define devlinks_xa_for_each_registered_get(net, index, devlink) \
- devlinks_xa_for_each_get(net, index, devlink, DEVLINK_REGISTERED)
-
-static struct devlink *devlink_get_from_attrs(struct net *net,
- struct nlattr **attrs)
-{
- struct devlink *devlink;
- unsigned long index;
- char *busname;
- char *devname;
-
- if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
- return ERR_PTR(-EINVAL);
-
- busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
- devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
-
- devlinks_xa_for_each_registered_get(net, index, devlink) {
- if (strcmp(devlink->dev->bus->name, busname) == 0 &&
- strcmp(dev_name(devlink->dev), devname) == 0)
- return devlink;
- devlink_put(devlink);
- }
-
- return ERR_PTR(-ENODEV);
-}
-
-#define ASSERT_DEVLINK_PORT_REGISTERED(devlink_port) \
- WARN_ON_ONCE(!(devlink_port)->registered)
-#define ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port) \
- WARN_ON_ONCE((devlink_port)->registered)
-#define ASSERT_DEVLINK_PORT_INITIALIZED(devlink_port) \
- WARN_ON_ONCE(!(devlink_port)->initialized)
-
-static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
- unsigned int port_index)
-{
- return xa_load(&devlink->ports, port_index);
-}
-
-static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
- struct nlattr **attrs)
-{
- if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
- u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
- struct devlink_port *devlink_port;
-
- devlink_port = devlink_port_get_by_index(devlink, port_index);
- if (!devlink_port)
- return ERR_PTR(-ENODEV);
- return devlink_port;
- }
- return ERR_PTR(-EINVAL);
-}
-
-static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- return devlink_port_get_from_attrs(devlink, info->attrs);
-}
-
-static inline bool
-devlink_rate_is_leaf(struct devlink_rate *devlink_rate)
-{
- return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF;
-}
-
-static inline bool
-devlink_rate_is_node(struct devlink_rate *devlink_rate)
-{
- return devlink_rate->type == DEVLINK_RATE_TYPE_NODE;
-}
-
-static struct devlink_rate *
-devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info)
-{
- struct devlink_rate *devlink_rate;
- struct devlink_port *devlink_port;
-
- devlink_port = devlink_port_get_from_attrs(devlink, info->attrs);
- if (IS_ERR(devlink_port))
- return ERR_CAST(devlink_port);
- devlink_rate = devlink_port->devlink_rate;
- return devlink_rate ?: ERR_PTR(-ENODEV);
-}
-
-static struct devlink_rate *
-devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name)
-{
- static struct devlink_rate *devlink_rate;
-
- list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
- if (devlink_rate_is_node(devlink_rate) &&
- !strcmp(node_name, devlink_rate->name))
- return devlink_rate;
- }
- return ERR_PTR(-ENODEV);
-}
-
-static struct devlink_rate *
-devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
-{
- const char *rate_node_name;
- size_t len;
-
- if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME])
- return ERR_PTR(-EINVAL);
- rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]);
- len = strlen(rate_node_name);
- /* Name cannot be empty or decimal number */
- if (!len || strspn(rate_node_name, "0123456789") == len)
- return ERR_PTR(-EINVAL);
-
- return devlink_rate_node_get_by_name(devlink, rate_node_name);
-}
-
-static struct devlink_rate *
-devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info)
-{
- return devlink_rate_node_get_from_attrs(devlink, info->attrs);
-}
-
-static struct devlink_rate *
-devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info)
-{
- struct nlattr **attrs = info->attrs;
-
- if (attrs[DEVLINK_ATTR_PORT_INDEX])
- return devlink_rate_leaf_get_from_info(devlink, info);
- else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME])
- return devlink_rate_node_get_from_info(devlink, info);
- else
- return ERR_PTR(-EINVAL);
-}
-
-static struct devlink_linecard *
-devlink_linecard_get_by_index(struct devlink *devlink,
- unsigned int linecard_index)
-{
- struct devlink_linecard *devlink_linecard;
-
- list_for_each_entry(devlink_linecard, &devlink->linecard_list, list) {
- if (devlink_linecard->index == linecard_index)
- return devlink_linecard;
- }
- return NULL;
-}
-
-static bool devlink_linecard_index_exists(struct devlink *devlink,
- unsigned int linecard_index)
-{
- return devlink_linecard_get_by_index(devlink, linecard_index);
-}
-
-static struct devlink_linecard *
-devlink_linecard_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
-{
- if (attrs[DEVLINK_ATTR_LINECARD_INDEX]) {
- u32 linecard_index = nla_get_u32(attrs[DEVLINK_ATTR_LINECARD_INDEX]);
- struct devlink_linecard *linecard;
-
- mutex_lock(&devlink->linecards_lock);
- linecard = devlink_linecard_get_by_index(devlink, linecard_index);
- if (linecard)
- refcount_inc(&linecard->refcount);
- mutex_unlock(&devlink->linecards_lock);
- if (!linecard)
- return ERR_PTR(-ENODEV);
- return linecard;
- }
- return ERR_PTR(-EINVAL);
-}
-
-static struct devlink_linecard *
-devlink_linecard_get_from_info(struct devlink *devlink, struct genl_info *info)
-{
- return devlink_linecard_get_from_attrs(devlink, info->attrs);
-}
-
-static void devlink_linecard_put(struct devlink_linecard *linecard)
-{
- if (refcount_dec_and_test(&linecard->refcount)) {
- mutex_destroy(&linecard->state_lock);
- kfree(linecard);
- }
-}
-
-struct devlink_sb {
- struct list_head list;
- unsigned int index;
- u32 size;
- u16 ingress_pools_count;
- u16 egress_pools_count;
- u16 ingress_tc_count;
- u16 egress_tc_count;
-};
-
-static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
-{
- return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
-}
-
-static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
- unsigned int sb_index)
-{
- struct devlink_sb *devlink_sb;
-
- list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- if (devlink_sb->index == sb_index)
- return devlink_sb;
- }
- return NULL;
-}
-
-static bool devlink_sb_index_exists(struct devlink *devlink,
- unsigned int sb_index)
-{
- return devlink_sb_get_by_index(devlink, sb_index);
-}
-
-static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
- struct nlattr **attrs)
-{
- if (attrs[DEVLINK_ATTR_SB_INDEX]) {
- u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
- struct devlink_sb *devlink_sb;
-
- devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
- if (!devlink_sb)
- return ERR_PTR(-ENODEV);
- return devlink_sb;
- }
- return ERR_PTR(-EINVAL);
-}
-
-static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- return devlink_sb_get_from_attrs(devlink, info->attrs);
-}
-
-static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
- struct nlattr **attrs,
- u16 *p_pool_index)
-{
- u16 val;
-
- if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
- return -EINVAL;
-
- val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
- if (val >= devlink_sb_pool_count(devlink_sb))
- return -EINVAL;
- *p_pool_index = val;
- return 0;
-}
-
-static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
- struct genl_info *info,
- u16 *p_pool_index)
-{
- return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
- p_pool_index);
-}
-
-static int
-devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
- enum devlink_sb_pool_type *p_pool_type)
-{
- u8 val;
-
- if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
- return -EINVAL;
-
- val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
- if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
- val != DEVLINK_SB_POOL_TYPE_EGRESS)
- return -EINVAL;
- *p_pool_type = val;
- return 0;
-}
-
-static int
-devlink_sb_pool_type_get_from_info(struct genl_info *info,
- enum devlink_sb_pool_type *p_pool_type)
-{
- return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
-}
-
-static int
-devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
- enum devlink_sb_threshold_type *p_th_type)
-{
- u8 val;
-
- if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
- return -EINVAL;
-
- val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
- if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
- val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
- return -EINVAL;
- *p_th_type = val;
- return 0;
-}
-
-static int
-devlink_sb_th_type_get_from_info(struct genl_info *info,
- enum devlink_sb_threshold_type *p_th_type)
-{
- return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
-}
-
-static int
-devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
- struct nlattr **attrs,
- enum devlink_sb_pool_type pool_type,
- u16 *p_tc_index)
-{
- u16 val;
-
- if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
- return -EINVAL;
-
- val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
- if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
- val >= devlink_sb->ingress_tc_count)
- return -EINVAL;
- if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
- val >= devlink_sb->egress_tc_count)
- return -EINVAL;
- *p_tc_index = val;
- return 0;
-}
-
-static void devlink_port_fn_cap_fill(struct nla_bitfield32 *caps,
- u32 cap, bool is_enable)
-{
- caps->selector |= cap;
- if (is_enable)
- caps->value |= cap;
-}
-
-static int devlink_port_fn_roce_fill(const struct devlink_ops *ops,
- struct devlink_port *devlink_port,
- struct nla_bitfield32 *caps,
- struct netlink_ext_ack *extack)
-{
- bool is_enable;
- int err;
-
- if (!ops->port_fn_roce_get)
- return 0;
-
- err = ops->port_fn_roce_get(devlink_port, &is_enable, extack);
- if (err) {
- if (err == -EOPNOTSUPP)
- return 0;
- return err;
- }
-
- devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_ROCE, is_enable);
- return 0;
-}
-
-static int devlink_port_fn_migratable_fill(const struct devlink_ops *ops,
- struct devlink_port *devlink_port,
- struct nla_bitfield32 *caps,
- struct netlink_ext_ack *extack)
-{
- bool is_enable;
- int err;
-
- if (!ops->port_fn_migratable_get ||
- devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF)
- return 0;
-
- err = ops->port_fn_migratable_get(devlink_port, &is_enable, extack);
- if (err) {
- if (err == -EOPNOTSUPP)
- return 0;
- return err;
- }
-
- devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_MIGRATABLE, is_enable);
- return 0;
-}
-
-static int devlink_port_fn_caps_fill(const struct devlink_ops *ops,
- struct devlink_port *devlink_port,
- struct sk_buff *msg,
- struct netlink_ext_ack *extack,
- bool *msg_updated)
-{
- struct nla_bitfield32 caps = {};
- int err;
-
- err = devlink_port_fn_roce_fill(ops, devlink_port, &caps, extack);
- if (err)
- return err;
-
- err = devlink_port_fn_migratable_fill(ops, devlink_port, &caps, extack);
- if (err)
- return err;
-
- if (!caps.selector)
- return 0;
- err = nla_put_bitfield32(msg, DEVLINK_PORT_FN_ATTR_CAPS, caps.value,
- caps.selector);
- if (err)
- return err;
-
- *msg_updated = true;
- return 0;
-}
-
-static int
-devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
- struct genl_info *info,
- enum devlink_sb_pool_type pool_type,
- u16 *p_tc_index)
-{
- return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
- pool_type, p_tc_index);
-}
-
-struct devlink_region {
- struct devlink *devlink;
- struct devlink_port *port;
- struct list_head list;
- union {
- const struct devlink_region_ops *ops;
- const struct devlink_port_region_ops *port_ops;
- };
- struct mutex snapshot_lock; /* protects snapshot_list,
- * max_snapshots and cur_snapshots
- * consistency.
- */
- struct list_head snapshot_list;
- u32 max_snapshots;
- u32 cur_snapshots;
- u64 size;
-};
-
-struct devlink_snapshot {
- struct list_head list;
- struct devlink_region *region;
- u8 *data;
- u32 id;
-};
-
-static struct devlink_region *
-devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
-{
- struct devlink_region *region;
-
- list_for_each_entry(region, &devlink->region_list, list)
- if (!strcmp(region->ops->name, region_name))
- return region;
-
- return NULL;
-}
-
-static struct devlink_region *
-devlink_port_region_get_by_name(struct devlink_port *port,
- const char *region_name)
-{
- struct devlink_region *region;
-
- list_for_each_entry(region, &port->region_list, list)
- if (!strcmp(region->ops->name, region_name))
- return region;
-
- return NULL;
-}
-
-static struct devlink_snapshot *
-devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
-{
- struct devlink_snapshot *snapshot;
-
- list_for_each_entry(snapshot, ®ion->snapshot_list, list)
- if (snapshot->id == id)
- return snapshot;
-
- return NULL;
-}
-
-#define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
-#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1)
-#define DEVLINK_NL_FLAG_NEED_RATE BIT(2)
-#define DEVLINK_NL_FLAG_NEED_RATE_NODE BIT(3)
-#define DEVLINK_NL_FLAG_NEED_LINECARD BIT(4)
-
-static int devlink_nl_pre_doit(const struct genl_split_ops *ops,
- struct sk_buff *skb, struct genl_info *info)
-{
- struct devlink_linecard *linecard;
- struct devlink_port *devlink_port;
- struct devlink *devlink;
- int err;
-
- devlink = devlink_get_from_attrs(genl_info_net(info), info->attrs);
- if (IS_ERR(devlink))
- return PTR_ERR(devlink);
- devl_lock(devlink);
- info->user_ptr[0] = devlink;
- if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
- devlink_port = devlink_port_get_from_info(devlink, info);
- if (IS_ERR(devlink_port)) {
- err = PTR_ERR(devlink_port);
- goto unlock;
- }
- info->user_ptr[1] = devlink_port;
- } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) {
- devlink_port = devlink_port_get_from_info(devlink, info);
- if (!IS_ERR(devlink_port))
- info->user_ptr[1] = devlink_port;
- } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE) {
- struct devlink_rate *devlink_rate;
-
- devlink_rate = devlink_rate_get_from_info(devlink, info);
- if (IS_ERR(devlink_rate)) {
- err = PTR_ERR(devlink_rate);
- goto unlock;
- }
- info->user_ptr[1] = devlink_rate;
- } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE_NODE) {
- struct devlink_rate *rate_node;
-
- rate_node = devlink_rate_node_get_from_info(devlink, info);
- if (IS_ERR(rate_node)) {
- err = PTR_ERR(rate_node);
- goto unlock;
- }
- info->user_ptr[1] = rate_node;
- } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) {
- linecard = devlink_linecard_get_from_info(devlink, info);
- if (IS_ERR(linecard)) {
- err = PTR_ERR(linecard);
- goto unlock;
- }
- info->user_ptr[1] = linecard;
- }
- return 0;
-
-unlock:
- devl_unlock(devlink);
- devlink_put(devlink);
- return err;
-}
-
-static void devlink_nl_post_doit(const struct genl_split_ops *ops,
- struct sk_buff *skb, struct genl_info *info)
-{
- struct devlink_linecard *linecard;
- struct devlink *devlink;
-
- devlink = info->user_ptr[0];
- if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) {
- linecard = info->user_ptr[1];
- devlink_linecard_put(linecard);
- }
- devl_unlock(devlink);
- devlink_put(devlink);
-}
-
-static struct genl_family devlink_nl_family;
-
-enum devlink_multicast_groups {
- DEVLINK_MCGRP_CONFIG,
-};
-
-static const struct genl_multicast_group devlink_nl_mcgrps[] = {
- [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
-};
-
-static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
-{
- if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
- return -EMSGSIZE;
- if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
- return -EMSGSIZE;
- return 0;
-}
-
-static int devlink_nl_put_nested_handle(struct sk_buff *msg, struct devlink *devlink)
-{
- struct nlattr *nested_attr;
-
- nested_attr = nla_nest_start(msg, DEVLINK_ATTR_NESTED_DEVLINK);
- if (!nested_attr)
- return -EMSGSIZE;
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- nla_nest_end(msg, nested_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, nested_attr);
- return -EMSGSIZE;
-}
-
-int devlink_nl_port_handle_fill(struct sk_buff *msg, struct devlink_port *devlink_port)
-{
- if (devlink_nl_put_handle(msg, devlink_port->devlink))
- return -EMSGSIZE;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
- return -EMSGSIZE;
- return 0;
-}
-
-size_t devlink_nl_port_handle_size(struct devlink_port *devlink_port)
-{
- struct devlink *devlink = devlink_port->devlink;
-
- return nla_total_size(strlen(devlink->dev->bus->name) + 1) /* DEVLINK_ATTR_BUS_NAME */
- + nla_total_size(strlen(dev_name(devlink->dev)) + 1) /* DEVLINK_ATTR_DEV_NAME */
- + nla_total_size(4); /* DEVLINK_ATTR_PORT_INDEX */
-}
-
-struct devlink_reload_combination {
- enum devlink_reload_action action;
- enum devlink_reload_limit limit;
-};
-
-static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
- {
- /* can't reinitialize driver with no down time */
- .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
- .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
- },
-};
-
-static bool
-devlink_reload_combination_is_invalid(enum devlink_reload_action action,
- enum devlink_reload_limit limit)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
- if (devlink_reload_invalid_combinations[i].action == action &&
- devlink_reload_invalid_combinations[i].limit == limit)
- return true;
- return false;
-}
-
-static bool
-devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
-{
- return test_bit(action, &devlink->ops->reload_actions);
-}
-
-static bool
-devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
-{
- return test_bit(limit, &devlink->ops->reload_limits);
-}
-
-static int devlink_reload_stat_put(struct sk_buff *msg,
- enum devlink_reload_limit limit, u32 value)
-{
- struct nlattr *reload_stats_entry;
-
- reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
- if (!reload_stats_entry)
- return -EMSGSIZE;
-
- if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
- nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
- goto nla_put_failure;
- nla_nest_end(msg, reload_stats_entry);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, reload_stats_entry);
- return -EMSGSIZE;
-}
-
-static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
-{
- struct nlattr *reload_stats_attr, *act_info, *act_stats;
- int i, j, stat_idx;
- u32 value;
-
- if (!is_remote)
- reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
- else
- reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
-
- if (!reload_stats_attr)
- return -EMSGSIZE;
-
- for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
- if ((!is_remote &&
- !devlink_reload_action_is_supported(devlink, i)) ||
- i == DEVLINK_RELOAD_ACTION_UNSPEC)
- continue;
- act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
- if (!act_info)
- goto nla_put_failure;
-
- if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
- goto action_info_nest_cancel;
- act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
- if (!act_stats)
- goto action_info_nest_cancel;
-
- for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
- /* Remote stats are shown even if not locally supported.
- * Stats of actions with unspecified limit are shown
- * though drivers don't need to register unspecified
- * limit.
- */
- if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
- !devlink_reload_limit_is_supported(devlink, j)) ||
- devlink_reload_combination_is_invalid(i, j))
- continue;
-
- stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
- if (!is_remote)
- value = devlink->stats.reload_stats[stat_idx];
- else
- value = devlink->stats.remote_reload_stats[stat_idx];
- if (devlink_reload_stat_put(msg, j, value))
- goto action_stats_nest_cancel;
- }
- nla_nest_end(msg, act_stats);
- nla_nest_end(msg, act_info);
- }
- nla_nest_end(msg, reload_stats_attr);
- return 0;
-
-action_stats_nest_cancel:
- nla_nest_cancel(msg, act_stats);
-action_info_nest_cancel:
- nla_nest_cancel(msg, act_info);
-nla_put_failure:
- nla_nest_cancel(msg, reload_stats_attr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags)
-{
- struct nlattr *dev_stats;
- void *hdr;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
- goto nla_put_failure;
-
- dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
- if (!dev_stats)
- goto nla_put_failure;
-
- if (devlink_reload_stats_put(msg, devlink, false))
- goto dev_stats_nest_cancel;
- if (devlink_reload_stats_put(msg, devlink, true))
- goto dev_stats_nest_cancel;
-
- nla_nest_end(msg, dev_stats);
- genlmsg_end(msg, hdr);
- return 0;
-
-dev_stats_nest_cancel:
- nla_nest_cancel(msg, dev_stats);
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
-{
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
- WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int devlink_nl_port_attrs_put(struct sk_buff *msg,
- struct devlink_port *devlink_port)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
-
- if (!devlink_port->attrs_set)
- return 0;
- if (attrs->lanes) {
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
- return -EMSGSIZE;
- }
- if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
- return -EMSGSIZE;
- if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
- return -EMSGSIZE;
- switch (devlink_port->attrs.flavour) {
- case DEVLINK_PORT_FLAVOUR_PCI_PF:
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
- attrs->pci_pf.controller) ||
- nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
- return -EMSGSIZE;
- if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
- return -EMSGSIZE;
- break;
- case DEVLINK_PORT_FLAVOUR_PCI_VF:
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
- attrs->pci_vf.controller) ||
- nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
- nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
- return -EMSGSIZE;
- if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
- return -EMSGSIZE;
- break;
- case DEVLINK_PORT_FLAVOUR_PCI_SF:
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
- attrs->pci_sf.controller) ||
- nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
- attrs->pci_sf.pf) ||
- nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
- attrs->pci_sf.sf))
- return -EMSGSIZE;
- break;
- case DEVLINK_PORT_FLAVOUR_PHYSICAL:
- case DEVLINK_PORT_FLAVOUR_CPU:
- case DEVLINK_PORT_FLAVOUR_DSA:
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
- attrs->phys.port_number))
- return -EMSGSIZE;
- if (!attrs->split)
- return 0;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
- attrs->phys.port_number))
- return -EMSGSIZE;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
- attrs->phys.split_subport_number))
- return -EMSGSIZE;
- break;
- default:
- break;
- }
- return 0;
-}
-
-static int devlink_port_fn_hw_addr_fill(const struct devlink_ops *ops,
- struct devlink_port *port,
- struct sk_buff *msg,
- struct netlink_ext_ack *extack,
- bool *msg_updated)
-{
- u8 hw_addr[MAX_ADDR_LEN];
- int hw_addr_len;
- int err;
-
- if (!ops->port_function_hw_addr_get)
- return 0;
-
- err = ops->port_function_hw_addr_get(port, hw_addr, &hw_addr_len,
- extack);
- if (err) {
- if (err == -EOPNOTSUPP)
- return 0;
- return err;
- }
- err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
- if (err)
- return err;
- *msg_updated = true;
- return 0;
-}
-
-static int devlink_nl_rate_fill(struct sk_buff *msg,
- struct devlink_rate *devlink_rate,
- enum devlink_command cmd, u32 portid, u32 seq,
- int flags, struct netlink_ext_ack *extack)
-{
- struct devlink *devlink = devlink_rate->devlink;
- void *hdr;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type))
- goto nla_put_failure;
-
- if (devlink_rate_is_leaf(devlink_rate)) {
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
- devlink_rate->devlink_port->index))
- goto nla_put_failure;
- } else if (devlink_rate_is_node(devlink_rate)) {
- if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME,
- devlink_rate->name))
- goto nla_put_failure;
- }
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE,
- devlink_rate->tx_share, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX,
- devlink_rate->tx_max, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u32(msg, DEVLINK_ATTR_RATE_TX_PRIORITY,
- devlink_rate->tx_priority))
- goto nla_put_failure;
-
- if (nla_put_u32(msg, DEVLINK_ATTR_RATE_TX_WEIGHT,
- devlink_rate->tx_weight))
- goto nla_put_failure;
-
- if (devlink_rate->parent)
- if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME,
- devlink_rate->parent->name))
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static bool
-devlink_port_fn_state_valid(enum devlink_port_fn_state state)
-{
- return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
- state == DEVLINK_PORT_FN_STATE_ACTIVE;
-}
-
-static bool
-devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
-{
- return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
- opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
-}
-
-static int devlink_port_fn_state_fill(const struct devlink_ops *ops,
- struct devlink_port *port,
- struct sk_buff *msg,
- struct netlink_ext_ack *extack,
- bool *msg_updated)
-{
- enum devlink_port_fn_opstate opstate;
- enum devlink_port_fn_state state;
- int err;
-
- if (!ops->port_fn_state_get)
- return 0;
-
- err = ops->port_fn_state_get(port, &state, &opstate, extack);
- if (err) {
- if (err == -EOPNOTSUPP)
- return 0;
- return err;
- }
- if (!devlink_port_fn_state_valid(state)) {
- WARN_ON_ONCE(1);
- NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
- return -EINVAL;
- }
- if (!devlink_port_fn_opstate_valid(opstate)) {
- WARN_ON_ONCE(1);
- NL_SET_ERR_MSG_MOD(extack,
- "Invalid operational state read from driver");
- return -EINVAL;
- }
- if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
- nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
- return -EMSGSIZE;
- *msg_updated = true;
- return 0;
-}
-
-static int
-devlink_port_fn_mig_set(struct devlink_port *devlink_port, bool enable,
- struct netlink_ext_ack *extack)
-{
- const struct devlink_ops *ops = devlink_port->devlink->ops;
-
- return ops->port_fn_migratable_set(devlink_port, enable, extack);
-}
-
-static int
-devlink_port_fn_roce_set(struct devlink_port *devlink_port, bool enable,
- struct netlink_ext_ack *extack)
-{
- const struct devlink_ops *ops = devlink_port->devlink->ops;
-
- return ops->port_fn_roce_set(devlink_port, enable, extack);
-}
-
-static int devlink_port_fn_caps_set(struct devlink_port *devlink_port,
- const struct nlattr *attr,
- struct netlink_ext_ack *extack)
-{
- struct nla_bitfield32 caps;
- u32 caps_value;
- int err;
-
- caps = nla_get_bitfield32(attr);
- caps_value = caps.value & caps.selector;
- if (caps.selector & DEVLINK_PORT_FN_CAP_ROCE) {
- err = devlink_port_fn_roce_set(devlink_port,
- caps_value & DEVLINK_PORT_FN_CAP_ROCE,
- extack);
- if (err)
- return err;
- }
- if (caps.selector & DEVLINK_PORT_FN_CAP_MIGRATABLE) {
- err = devlink_port_fn_mig_set(devlink_port, caps_value &
- DEVLINK_PORT_FN_CAP_MIGRATABLE,
- extack);
- if (err)
- return err;
- }
- return 0;
-}
-
-static int
-devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
- struct netlink_ext_ack *extack)
-{
- const struct devlink_ops *ops;
- struct nlattr *function_attr;
- bool msg_updated = false;
- int err;
-
- function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
- if (!function_attr)
- return -EMSGSIZE;
-
- ops = port->devlink->ops;
- err = devlink_port_fn_hw_addr_fill(ops, port, msg, extack,
- &msg_updated);
- if (err)
- goto out;
- err = devlink_port_fn_caps_fill(ops, port, msg, extack,
- &msg_updated);
- if (err)
- goto out;
- err = devlink_port_fn_state_fill(ops, port, msg, extack, &msg_updated);
-out:
- if (err || !msg_updated)
- nla_nest_cancel(msg, function_attr);
- else
- nla_nest_end(msg, function_attr);
- return err;
-}
-
-static int devlink_nl_port_fill(struct sk_buff *msg,
- struct devlink_port *devlink_port,
- enum devlink_command cmd, u32 portid, u32 seq,
- int flags, struct netlink_ext_ack *extack)
-{
- struct devlink *devlink = devlink_port->devlink;
- void *hdr;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
- goto nla_put_failure;
-
- spin_lock_bh(&devlink_port->type_lock);
- if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
- goto nla_put_failure_type_locked;
- if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
- nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
- devlink_port->desired_type))
- goto nla_put_failure_type_locked;
- if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
- if (devlink_port->type_eth.netdev &&
- (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
- devlink_port->type_eth.ifindex) ||
- nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
- devlink_port->type_eth.ifname)))
- goto nla_put_failure_type_locked;
- }
- if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
- struct ib_device *ibdev = devlink_port->type_ib.ibdev;
-
- if (ibdev &&
- nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
- ibdev->name))
- goto nla_put_failure_type_locked;
- }
- spin_unlock_bh(&devlink_port->type_lock);
- if (devlink_nl_port_attrs_put(msg, devlink_port))
- goto nla_put_failure;
- if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
- goto nla_put_failure;
- if (devlink_port->linecard &&
- nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX,
- devlink_port->linecard->index))
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure_type_locked:
- spin_unlock_bh(&devlink_port->type_lock);
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void devlink_port_notify(struct devlink_port *devlink_port,
- enum devlink_command cmd)
-{
- struct devlink *devlink = devlink_port->devlink;
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
-
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
- 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static void devlink_rate_notify(struct devlink_rate *devlink_rate,
- enum devlink_command cmd)
-{
- struct devlink *devlink = devlink_rate->devlink;
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL);
-
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
- 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink_rate *devlink_rate;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
- enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
- u32 id = NETLINK_CB(cb->skb).portid;
-
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI, NULL);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_nl_cmd_rate_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_rate *devlink_rate = info->user_ptr[1];
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW,
- info->snd_portid, info->snd_seq, 0,
- info->extack);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static bool
-devlink_rate_is_parent_node(struct devlink_rate *devlink_rate,
- struct devlink_rate *parent)
-{
- while (parent) {
- if (parent == devlink_rate)
- return true;
- parent = parent->parent;
- }
- return false;
-}
-
-static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
- info->snd_portid, info->snd_seq, 0);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (idx < start) {
- idx++;
- devlink_put(devlink);
- continue;
- }
-
- devl_lock(devlink);
- err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq, NLM_F_MULTI);
- devl_unlock(devlink);
- devlink_put(devlink);
-
- if (err)
- goto out;
- idx++;
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
- info->snd_portid, info->snd_seq, 0,
- info->extack);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- struct devlink_port *devlink_port;
- unsigned long index, port_index;
- int start = cb->args[0];
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- xa_for_each(&devlink->ports, port_index, devlink_port) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_port_fill(msg, devlink_port,
- DEVLINK_CMD_NEW,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI, cb->extack);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_port_type_set(struct devlink_port *devlink_port,
- enum devlink_port_type port_type)
-
-{
- int err;
-
- if (!devlink_port->devlink->ops->port_type_set)
- return -EOPNOTSUPP;
-
- if (port_type == devlink_port->type)
- return 0;
-
- err = devlink_port->devlink->ops->port_type_set(devlink_port,
- port_type);
- if (err)
- return err;
-
- devlink_port->desired_type = port_type;
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
- return 0;
-}
-
-static int devlink_port_function_hw_addr_set(struct devlink_port *port,
- const struct nlattr *attr,
- struct netlink_ext_ack *extack)
-{
- const struct devlink_ops *ops = port->devlink->ops;
- const u8 *hw_addr;
- int hw_addr_len;
-
- hw_addr = nla_data(attr);
- hw_addr_len = nla_len(attr);
- if (hw_addr_len > MAX_ADDR_LEN) {
- NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
- return -EINVAL;
- }
- if (port->type == DEVLINK_PORT_TYPE_ETH) {
- if (hw_addr_len != ETH_ALEN) {
- NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
- return -EINVAL;
- }
- if (!is_unicast_ether_addr(hw_addr)) {
- NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
- return -EINVAL;
- }
- }
-
- return ops->port_function_hw_addr_set(port, hw_addr, hw_addr_len,
- extack);
-}
-
-static int devlink_port_fn_state_set(struct devlink_port *port,
- const struct nlattr *attr,
- struct netlink_ext_ack *extack)
-{
- enum devlink_port_fn_state state;
- const struct devlink_ops *ops;
-
- state = nla_get_u8(attr);
- ops = port->devlink->ops;
- return ops->port_fn_state_set(port, state, extack);
-}
-
-static int devlink_port_function_validate(struct devlink_port *devlink_port,
- struct nlattr **tb,
- struct netlink_ext_ack *extack)
-{
- const struct devlink_ops *ops = devlink_port->devlink->ops;
- struct nlattr *attr;
-
- if (tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] &&
- !ops->port_function_hw_addr_set) {
- NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR],
- "Port doesn't support function attributes");
- return -EOPNOTSUPP;
- }
- if (tb[DEVLINK_PORT_FN_ATTR_STATE] && !ops->port_fn_state_set) {
- NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR],
- "Function does not support state setting");
- return -EOPNOTSUPP;
- }
- attr = tb[DEVLINK_PORT_FN_ATTR_CAPS];
- if (attr) {
- struct nla_bitfield32 caps;
-
- caps = nla_get_bitfield32(attr);
- if (caps.selector & DEVLINK_PORT_FN_CAP_ROCE &&
- !ops->port_fn_roce_set) {
- NL_SET_ERR_MSG_ATTR(extack, attr,
- "Port doesn't support RoCE function attribute");
- return -EOPNOTSUPP;
- }
- if (caps.selector & DEVLINK_PORT_FN_CAP_MIGRATABLE) {
- if (!ops->port_fn_migratable_set) {
- NL_SET_ERR_MSG_ATTR(extack, attr,
- "Port doesn't support migratable function attribute");
- return -EOPNOTSUPP;
- }
- if (devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) {
- NL_SET_ERR_MSG_ATTR(extack, attr,
- "migratable function attribute supported for VFs only");
- return -EOPNOTSUPP;
- }
- }
- }
- return 0;
-}
-
-static int devlink_port_function_set(struct devlink_port *port,
- const struct nlattr *attr,
- struct netlink_ext_ack *extack)
-{
- struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
- int err;
-
- err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
- devlink_function_nl_policy, extack);
- if (err < 0) {
- NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
- return err;
- }
-
- err = devlink_port_function_validate(port, tb, extack);
- if (err)
- return err;
-
- attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
- if (attr) {
- err = devlink_port_function_hw_addr_set(port, attr, extack);
- if (err)
- return err;
- }
-
- attr = tb[DEVLINK_PORT_FN_ATTR_CAPS];
- if (attr) {
- err = devlink_port_fn_caps_set(port, attr, extack);
- if (err)
- return err;
- }
-
- /* Keep this as the last function attribute set, so that when
- * multiple port function attributes are set along with state,
- * Those can be applied first before activating the state.
- */
- attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
- if (attr)
- err = devlink_port_fn_state_set(port, attr, extack);
-
- if (!err)
- devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
- return err;
-}
-
-static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- int err;
-
- if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
- enum devlink_port_type port_type;
-
- port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
- err = devlink_port_type_set(devlink_port, port_type);
- if (err)
- return err;
- }
-
- if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
- struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
- struct netlink_ext_ack *extack = info->extack;
-
- err = devlink_port_function_set(devlink_port, attr, extack);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = info->user_ptr[0];
- u32 count;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PORT_SPLIT_COUNT))
- return -EINVAL;
- if (!devlink->ops->port_split)
- return -EOPNOTSUPP;
-
- count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
-
- if (!devlink_port->attrs.splittable) {
- /* Split ports cannot be split. */
- if (devlink_port->attrs.split)
- NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
- else
- NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
- return -EINVAL;
- }
-
- if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
- NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
- return -EINVAL;
- }
-
- return devlink->ops->port_split(devlink, devlink_port, count,
- info->extack);
-}
-
-static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = info->user_ptr[0];
-
- if (!devlink->ops->port_unsplit)
- return -EOPNOTSUPP;
- return devlink->ops->port_unsplit(devlink, devlink_port, info->extack);
-}
-
-static int devlink_port_new_notify(struct devlink *devlink,
- unsigned int port_index,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port;
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- lockdep_assert_held(&devlink->lock);
- devlink_port = devlink_port_get_by_index(devlink, port_index);
- if (!devlink_port) {
- err = -ENODEV;
- goto out;
- }
-
- err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
- info->snd_portid, info->snd_seq, 0, NULL);
- if (err)
- goto out;
-
- return genlmsg_reply(msg, info);
-
-out:
- nlmsg_free(msg);
- return err;
-}
-
-static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink_port_new_attrs new_attrs = {};
- struct devlink *devlink = info->user_ptr[0];
- unsigned int new_port_index;
- int err;
-
- if (!devlink->ops->port_new || !devlink->ops->port_del)
- return -EOPNOTSUPP;
-
- if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
- !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
- NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified");
- return -EINVAL;
- }
- new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
- new_attrs.pfnum =
- nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
-
- if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
- /* Port index of the new port being created by driver. */
- new_attrs.port_index =
- nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
- new_attrs.port_index_valid = true;
- }
- if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
- new_attrs.controller =
- nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
- new_attrs.controller_valid = true;
- }
- if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
- info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
- new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
- new_attrs.sfnum_valid = true;
- }
-
- err = devlink->ops->port_new(devlink, &new_attrs, extack,
- &new_port_index);
- if (err)
- return err;
-
- err = devlink_port_new_notify(devlink, new_port_index, info);
- if (err && err != -ENODEV) {
- /* Fail to send the response; destroy newly created port. */
- devlink->ops->port_del(devlink, new_port_index, extack);
- }
- return err;
-}
-
-static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
- unsigned int port_index;
-
- if (!devlink->ops->port_del)
- return -EOPNOTSUPP;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PORT_INDEX)) {
- NL_SET_ERR_MSG_MOD(extack, "Port index is not specified");
- return -EINVAL;
- }
- port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
-
- return devlink->ops->port_del(devlink, port_index, extack);
-}
-
-static int
-devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate,
- struct genl_info *info,
- struct nlattr *nla_parent)
-{
- struct devlink *devlink = devlink_rate->devlink;
- const char *parent_name = nla_data(nla_parent);
- const struct devlink_ops *ops = devlink->ops;
- size_t len = strlen(parent_name);
- struct devlink_rate *parent;
- int err = -EOPNOTSUPP;
-
- parent = devlink_rate->parent;
-
- if (parent && !len) {
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_parent_set(devlink_rate, NULL,
- devlink_rate->priv, NULL,
- info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_parent_set(devlink_rate, NULL,
- devlink_rate->priv, NULL,
- info->extack);
- if (err)
- return err;
-
- refcount_dec(&parent->refcnt);
- devlink_rate->parent = NULL;
- } else if (len) {
- parent = devlink_rate_node_get_by_name(devlink, parent_name);
- if (IS_ERR(parent))
- return -ENODEV;
-
- if (parent == devlink_rate) {
- NL_SET_ERR_MSG_MOD(info->extack, "Parent to self is not allowed");
- return -EINVAL;
- }
-
- if (devlink_rate_is_node(devlink_rate) &&
- devlink_rate_is_parent_node(devlink_rate, parent->parent)) {
- NL_SET_ERR_MSG_MOD(info->extack, "Node is already a parent of parent node.");
- return -EEXIST;
- }
-
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_parent_set(devlink_rate, parent,
- devlink_rate->priv, parent->priv,
- info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_parent_set(devlink_rate, parent,
- devlink_rate->priv, parent->priv,
- info->extack);
- if (err)
- return err;
-
- if (devlink_rate->parent)
- /* we're reassigning to other parent in this case */
- refcount_dec(&devlink_rate->parent->refcnt);
-
- refcount_inc(&parent->refcnt);
- devlink_rate->parent = parent;
- }
-
- return 0;
-}
-
-static int devlink_nl_rate_set(struct devlink_rate *devlink_rate,
- const struct devlink_ops *ops,
- struct genl_info *info)
-{
- struct nlattr *nla_parent, **attrs = info->attrs;
- int err = -EOPNOTSUPP;
- u32 priority;
- u32 weight;
- u64 rate;
-
- if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) {
- rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]);
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv,
- rate, info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv,
- rate, info->extack);
- if (err)
- return err;
- devlink_rate->tx_share = rate;
- }
-
- if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) {
- rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]);
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv,
- rate, info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv,
- rate, info->extack);
- if (err)
- return err;
- devlink_rate->tx_max = rate;
- }
-
- if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY]) {
- priority = nla_get_u32(attrs[DEVLINK_ATTR_RATE_TX_PRIORITY]);
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_tx_priority_set(devlink_rate, devlink_rate->priv,
- priority, info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_tx_priority_set(devlink_rate, devlink_rate->priv,
- priority, info->extack);
-
- if (err)
- return err;
- devlink_rate->tx_priority = priority;
- }
-
- if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT]) {
- weight = nla_get_u32(attrs[DEVLINK_ATTR_RATE_TX_WEIGHT]);
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_tx_weight_set(devlink_rate, devlink_rate->priv,
- weight, info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_tx_weight_set(devlink_rate, devlink_rate->priv,
- weight, info->extack);
-
- if (err)
- return err;
- devlink_rate->tx_weight = weight;
- }
-
- nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME];
- if (nla_parent) {
- err = devlink_nl_rate_parent_node_set(devlink_rate, info,
- nla_parent);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops,
- struct genl_info *info,
- enum devlink_rate_type type)
-{
- struct nlattr **attrs = info->attrs;
-
- if (type == DEVLINK_RATE_TYPE_LEAF) {
- if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) {
- NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the leafs");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) {
- NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the leafs");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
- !ops->rate_leaf_parent_set) {
- NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the leafs");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY] && !ops->rate_leaf_tx_priority_set) {
- NL_SET_ERR_MSG_ATTR(info->extack,
- attrs[DEVLINK_ATTR_RATE_TX_PRIORITY],
- "TX priority set isn't supported for the leafs");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT] && !ops->rate_leaf_tx_weight_set) {
- NL_SET_ERR_MSG_ATTR(info->extack,
- attrs[DEVLINK_ATTR_RATE_TX_WEIGHT],
- "TX weight set isn't supported for the leafs");
- return false;
- }
- } else if (type == DEVLINK_RATE_TYPE_NODE) {
- if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) {
- NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the nodes");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) {
- NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the nodes");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
- !ops->rate_node_parent_set) {
- NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the nodes");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY] && !ops->rate_node_tx_priority_set) {
- NL_SET_ERR_MSG_ATTR(info->extack,
- attrs[DEVLINK_ATTR_RATE_TX_PRIORITY],
- "TX priority set isn't supported for the nodes");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT] && !ops->rate_node_tx_weight_set) {
- NL_SET_ERR_MSG_ATTR(info->extack,
- attrs[DEVLINK_ATTR_RATE_TX_WEIGHT],
- "TX weight set isn't supported for the nodes");
- return false;
- }
- } else {
- WARN(1, "Unknown type of rate object");
- return false;
- }
-
- return true;
-}
-
-static int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_rate *devlink_rate = info->user_ptr[1];
- struct devlink *devlink = devlink_rate->devlink;
- const struct devlink_ops *ops = devlink->ops;
- int err;
-
- if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type))
- return -EOPNOTSUPP;
-
- err = devlink_nl_rate_set(devlink_rate, ops, info);
-
- if (!err)
- devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
- return err;
-}
-
-static int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_rate *rate_node;
- const struct devlink_ops *ops;
- int err;
-
- ops = devlink->ops;
- if (!ops || !ops->rate_node_new || !ops->rate_node_del) {
- NL_SET_ERR_MSG_MOD(info->extack, "Rate nodes aren't supported");
- return -EOPNOTSUPP;
- }
-
- if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE))
- return -EOPNOTSUPP;
-
- rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs);
- if (!IS_ERR(rate_node))
- return -EEXIST;
- else if (rate_node == ERR_PTR(-EINVAL))
- return -EINVAL;
-
- rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
- if (!rate_node)
- return -ENOMEM;
-
- rate_node->devlink = devlink;
- rate_node->type = DEVLINK_RATE_TYPE_NODE;
- rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL);
- if (!rate_node->name) {
- err = -ENOMEM;
- goto err_strdup;
- }
-
- err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack);
- if (err)
- goto err_node_new;
-
- err = devlink_nl_rate_set(rate_node, ops, info);
- if (err)
- goto err_rate_set;
-
- refcount_set(&rate_node->refcnt, 1);
- list_add(&rate_node->list, &devlink->rate_list);
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
- return 0;
-
-err_rate_set:
- ops->rate_node_del(rate_node, rate_node->priv, info->extack);
-err_node_new:
- kfree(rate_node->name);
-err_strdup:
- kfree(rate_node);
- return err;
-}
-
-static int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_rate *rate_node = info->user_ptr[1];
- struct devlink *devlink = rate_node->devlink;
- const struct devlink_ops *ops = devlink->ops;
- int err;
-
- if (refcount_read(&rate_node->refcnt) > 1) {
- NL_SET_ERR_MSG_MOD(info->extack, "Node has children. Cannot delete node.");
- return -EBUSY;
- }
-
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
- err = ops->rate_node_del(rate_node, rate_node->priv, info->extack);
- if (rate_node->parent)
- refcount_dec(&rate_node->parent->refcnt);
- list_del(&rate_node->list);
- kfree(rate_node->name);
- kfree(rate_node);
- return err;
-}
-
-struct devlink_linecard_type {
- const char *type;
- const void *priv;
-};
-
-static int devlink_nl_linecard_fill(struct sk_buff *msg,
- struct devlink *devlink,
- struct devlink_linecard *linecard,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags,
- struct netlink_ext_ack *extack)
-{
- struct devlink_linecard_type *linecard_type;
- struct nlattr *attr;
- void *hdr;
- int i;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX, linecard->index))
- goto nla_put_failure;
- if (nla_put_u8(msg, DEVLINK_ATTR_LINECARD_STATE, linecard->state))
- goto nla_put_failure;
- if (linecard->type &&
- nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE, linecard->type))
- goto nla_put_failure;
-
- if (linecard->types_count) {
- attr = nla_nest_start(msg,
- DEVLINK_ATTR_LINECARD_SUPPORTED_TYPES);
- if (!attr)
- goto nla_put_failure;
- for (i = 0; i < linecard->types_count; i++) {
- linecard_type = &linecard->types[i];
- if (nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE,
- linecard_type->type)) {
- nla_nest_cancel(msg, attr);
- goto nla_put_failure;
- }
- }
- nla_nest_end(msg, attr);
- }
-
- if (linecard->nested_devlink &&
- devlink_nl_put_nested_handle(msg, linecard->nested_devlink))
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void devlink_linecard_notify(struct devlink_linecard *linecard,
- enum devlink_command cmd)
-{
- struct devlink *devlink = linecard->devlink;
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_LINECARD_NEW &&
- cmd != DEVLINK_CMD_LINECARD_DEL);
-
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_linecard_fill(msg, devlink, linecard, cmd, 0, 0, 0,
- NULL);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int devlink_nl_cmd_linecard_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_linecard *linecard = info->user_ptr[1];
- struct devlink *devlink = linecard->devlink;
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- mutex_lock(&linecard->state_lock);
- err = devlink_nl_linecard_fill(msg, devlink, linecard,
- DEVLINK_CMD_LINECARD_NEW,
- info->snd_portid, info->snd_seq, 0,
- info->extack);
- mutex_unlock(&linecard->state_lock);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink_linecard *linecard;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- mutex_lock(&devlink->linecards_lock);
- list_for_each_entry(linecard, &devlink->linecard_list, list) {
- if (idx < start) {
- idx++;
- continue;
- }
- mutex_lock(&linecard->state_lock);
- err = devlink_nl_linecard_fill(msg, devlink, linecard,
- DEVLINK_CMD_LINECARD_NEW,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI,
- cb->extack);
- mutex_unlock(&linecard->state_lock);
- if (err) {
- mutex_unlock(&devlink->linecards_lock);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- mutex_unlock(&devlink->linecards_lock);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static struct devlink_linecard_type *
-devlink_linecard_type_lookup(struct devlink_linecard *linecard,
- const char *type)
-{
- struct devlink_linecard_type *linecard_type;
- int i;
-
- for (i = 0; i < linecard->types_count; i++) {
- linecard_type = &linecard->types[i];
- if (!strcmp(type, linecard_type->type))
- return linecard_type;
- }
- return NULL;
-}
-
-static int devlink_linecard_type_set(struct devlink_linecard *linecard,
- const char *type,
- struct netlink_ext_ack *extack)
-{
- const struct devlink_linecard_ops *ops = linecard->ops;
- struct devlink_linecard_type *linecard_type;
- int err;
-
- mutex_lock(&linecard->state_lock);
- if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) {
- NL_SET_ERR_MSG_MOD(extack, "Line card is currently being provisioned");
- err = -EBUSY;
- goto out;
- }
- if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) {
- NL_SET_ERR_MSG_MOD(extack, "Line card is currently being unprovisioned");
- err = -EBUSY;
- goto out;
- }
-
- linecard_type = devlink_linecard_type_lookup(linecard, type);
- if (!linecard_type) {
- NL_SET_ERR_MSG_MOD(extack, "Unsupported line card type provided");
- err = -EINVAL;
- goto out;
- }
-
- if (linecard->state != DEVLINK_LINECARD_STATE_UNPROVISIONED &&
- linecard->state != DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) {
- NL_SET_ERR_MSG_MOD(extack, "Line card already provisioned");
- err = -EBUSY;
- /* Check if the line card is provisioned in the same
- * way the user asks. In case it is, make the operation
- * to return success.
- */
- if (ops->same_provision &&
- ops->same_provision(linecard, linecard->priv,
- linecard_type->type,
- linecard_type->priv))
- err = 0;
- goto out;
- }
-
- linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING;
- linecard->type = linecard_type->type;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
- err = ops->provision(linecard, linecard->priv, linecard_type->type,
- linecard_type->priv, extack);
- if (err) {
- /* Provisioning failed. Assume the linecard is unprovisioned
- * for future operations.
- */
- mutex_lock(&linecard->state_lock);
- linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
- linecard->type = NULL;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
- }
- return err;
-
-out:
- mutex_unlock(&linecard->state_lock);
- return err;
-}
-
-static int devlink_linecard_type_unset(struct devlink_linecard *linecard,
- struct netlink_ext_ack *extack)
-{
- int err;
-
- mutex_lock(&linecard->state_lock);
- if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) {
- NL_SET_ERR_MSG_MOD(extack, "Line card is currently being provisioned");
- err = -EBUSY;
- goto out;
- }
- if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) {
- NL_SET_ERR_MSG_MOD(extack, "Line card is currently being unprovisioned");
- err = -EBUSY;
- goto out;
- }
- if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) {
- linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
- linecard->type = NULL;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- err = 0;
- goto out;
- }
-
- if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONED) {
- NL_SET_ERR_MSG_MOD(extack, "Line card is not provisioned");
- err = 0;
- goto out;
- }
- linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONING;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
- err = linecard->ops->unprovision(linecard, linecard->priv,
- extack);
- if (err) {
- /* Unprovisioning failed. Assume the linecard is unprovisioned
- * for future operations.
- */
- mutex_lock(&linecard->state_lock);
- linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
- linecard->type = NULL;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
- }
- return err;
-
-out:
- mutex_unlock(&linecard->state_lock);
- return err;
-}
-
-static int devlink_nl_cmd_linecard_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_linecard *linecard = info->user_ptr[1];
- struct netlink_ext_ack *extack = info->extack;
- int err;
-
- if (info->attrs[DEVLINK_ATTR_LINECARD_TYPE]) {
- const char *type;
-
- type = nla_data(info->attrs[DEVLINK_ATTR_LINECARD_TYPE]);
- if (strcmp(type, "")) {
- err = devlink_linecard_type_set(linecard, type, extack);
- if (err)
- return err;
- } else {
- err = devlink_linecard_type_unset(linecard, extack);
- if (err)
- return err;
- }
- }
-
- return 0;
-}
-
-static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
- struct devlink_sb *devlink_sb,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags)
-{
- void *hdr;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
- devlink_sb->ingress_pools_count))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
- devlink_sb->egress_pools_count))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
- devlink_sb->ingress_tc_count))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
- devlink_sb->egress_tc_count))
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_sb *devlink_sb;
- struct sk_buff *msg;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
- DEVLINK_CMD_SB_NEW,
- info->snd_portid, info->snd_seq, 0);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- struct devlink_sb *devlink_sb;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
- DEVLINK_CMD_SB_NEW,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
- struct devlink_sb *devlink_sb,
- u16 pool_index, enum devlink_command cmd,
- u32 portid, u32 seq, int flags)
-{
- struct devlink_sb_pool_info pool_info;
- void *hdr;
- int err;
-
- err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
- pool_index, &pool_info);
- if (err)
- return err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
- goto nla_put_failure;
- if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
- goto nla_put_failure;
- if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
- pool_info.threshold_type))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
- pool_info.cell_size))
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_sb *devlink_sb;
- struct sk_buff *msg;
- u16 pool_index;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
- &pool_index);
- if (err)
- return err;
-
- if (!devlink->ops->sb_pool_get)
- return -EOPNOTSUPP;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
- DEVLINK_CMD_SB_POOL_NEW,
- info->snd_portid, info->snd_seq, 0);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
- struct devlink *devlink,
- struct devlink_sb *devlink_sb,
- u32 portid, u32 seq)
-{
- u16 pool_count = devlink_sb_pool_count(devlink_sb);
- u16 pool_index;
- int err;
-
- for (pool_index = 0; pool_index < pool_count; pool_index++) {
- if (*p_idx < start) {
- (*p_idx)++;
- continue;
- }
- err = devlink_nl_sb_pool_fill(msg, devlink,
- devlink_sb,
- pool_index,
- DEVLINK_CMD_SB_POOL_NEW,
- portid, seq, NLM_F_MULTI);
- if (err)
- return err;
- (*p_idx)++;
- }
- return 0;
-}
-
-static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- struct devlink_sb *devlink_sb;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (!devlink->ops->sb_pool_get)
- goto retry;
-
- devl_lock(devlink);
- list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
- devlink_sb,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq);
- if (err == -EOPNOTSUPP) {
- err = 0;
- } else if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- }
- devl_unlock(devlink);
-retry:
- devlink_put(devlink);
- }
-out:
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
- u16 pool_index, u32 size,
- enum devlink_sb_threshold_type threshold_type,
- struct netlink_ext_ack *extack)
-
-{
- const struct devlink_ops *ops = devlink->ops;
-
- if (ops->sb_pool_set)
- return ops->sb_pool_set(devlink, sb_index, pool_index,
- size, threshold_type, extack);
- return -EOPNOTSUPP;
-}
-
-static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- enum devlink_sb_threshold_type threshold_type;
- struct devlink_sb *devlink_sb;
- u16 pool_index;
- u32 size;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
- &pool_index);
- if (err)
- return err;
-
- err = devlink_sb_th_type_get_from_info(info, &threshold_type);
- if (err)
- return err;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SB_POOL_SIZE))
- return -EINVAL;
-
- size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
- return devlink_sb_pool_set(devlink, devlink_sb->index,
- pool_index, size, threshold_type,
- info->extack);
-}
-
-static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
- struct devlink *devlink,
- struct devlink_port *devlink_port,
- struct devlink_sb *devlink_sb,
- u16 pool_index,
- enum devlink_command cmd,
- u32 portid, u32 seq, int flags)
-{
- const struct devlink_ops *ops = devlink->ops;
- u32 threshold;
- void *hdr;
- int err;
-
- err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
- pool_index, &threshold);
- if (err)
- return err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
- goto nla_put_failure;
-
- if (ops->sb_occ_port_pool_get) {
- u32 cur;
- u32 max;
-
- err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
- pool_index, &cur, &max);
- if (err && err != -EOPNOTSUPP)
- goto sb_occ_get_failure;
- if (!err) {
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
- goto nla_put_failure;
- }
- }
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- err = -EMSGSIZE;
-sb_occ_get_failure:
- genlmsg_cancel(msg, hdr);
- return err;
-}
-
-static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = devlink_port->devlink;
- struct devlink_sb *devlink_sb;
- struct sk_buff *msg;
- u16 pool_index;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
- &pool_index);
- if (err)
- return err;
-
- if (!devlink->ops->sb_port_pool_get)
- return -EOPNOTSUPP;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
- devlink_sb, pool_index,
- DEVLINK_CMD_SB_PORT_POOL_NEW,
- info->snd_portid, info->snd_seq, 0);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
- struct devlink *devlink,
- struct devlink_sb *devlink_sb,
- u32 portid, u32 seq)
-{
- struct devlink_port *devlink_port;
- u16 pool_count = devlink_sb_pool_count(devlink_sb);
- unsigned long port_index;
- u16 pool_index;
- int err;
-
- xa_for_each(&devlink->ports, port_index, devlink_port) {
- for (pool_index = 0; pool_index < pool_count; pool_index++) {
- if (*p_idx < start) {
- (*p_idx)++;
- continue;
- }
- err = devlink_nl_sb_port_pool_fill(msg, devlink,
- devlink_port,
- devlink_sb,
- pool_index,
- DEVLINK_CMD_SB_PORT_POOL_NEW,
- portid, seq,
- NLM_F_MULTI);
- if (err)
- return err;
- (*p_idx)++;
- }
- }
- return 0;
-}
-
-static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- struct devlink_sb *devlink_sb;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (!devlink->ops->sb_port_pool_get)
- goto retry;
-
- devl_lock(devlink);
- list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- err = __sb_port_pool_get_dumpit(msg, start, &idx,
- devlink, devlink_sb,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq);
- if (err == -EOPNOTSUPP) {
- err = 0;
- } else if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- }
- devl_unlock(devlink);
-retry:
- devlink_put(devlink);
- }
-out:
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
- unsigned int sb_index, u16 pool_index,
- u32 threshold,
- struct netlink_ext_ack *extack)
-
-{
- const struct devlink_ops *ops = devlink_port->devlink->ops;
-
- if (ops->sb_port_pool_set)
- return ops->sb_port_pool_set(devlink_port, sb_index,
- pool_index, threshold, extack);
- return -EOPNOTSUPP;
-}
-
-static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_sb *devlink_sb;
- u16 pool_index;
- u32 threshold;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
- &pool_index);
- if (err)
- return err;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SB_THRESHOLD))
- return -EINVAL;
-
- threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
- return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
- pool_index, threshold, info->extack);
-}
-
-static int
-devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
- struct devlink_port *devlink_port,
- struct devlink_sb *devlink_sb, u16 tc_index,
- enum devlink_sb_pool_type pool_type,
- enum devlink_command cmd,
- u32 portid, u32 seq, int flags)
-{
- const struct devlink_ops *ops = devlink->ops;
- u16 pool_index;
- u32 threshold;
- void *hdr;
- int err;
-
- err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
- tc_index, pool_type,
- &pool_index, &threshold);
- if (err)
- return err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
- goto nla_put_failure;
- if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
- goto nla_put_failure;
-
- if (ops->sb_occ_tc_port_bind_get) {
- u32 cur;
- u32 max;
-
- err = ops->sb_occ_tc_port_bind_get(devlink_port,
- devlink_sb->index,
- tc_index, pool_type,
- &cur, &max);
- if (err && err != -EOPNOTSUPP)
- return err;
- if (!err) {
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
- goto nla_put_failure;
- }
- }
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = devlink_port->devlink;
- struct devlink_sb *devlink_sb;
- struct sk_buff *msg;
- enum devlink_sb_pool_type pool_type;
- u16 tc_index;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- err = devlink_sb_pool_type_get_from_info(info, &pool_type);
- if (err)
- return err;
-
- err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
- pool_type, &tc_index);
- if (err)
- return err;
-
- if (!devlink->ops->sb_tc_pool_bind_get)
- return -EOPNOTSUPP;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
- devlink_sb, tc_index, pool_type,
- DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
- info->snd_portid,
- info->snd_seq, 0);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
- int start, int *p_idx,
- struct devlink *devlink,
- struct devlink_sb *devlink_sb,
- u32 portid, u32 seq)
-{
- struct devlink_port *devlink_port;
- unsigned long port_index;
- u16 tc_index;
- int err;
-
- xa_for_each(&devlink->ports, port_index, devlink_port) {
- for (tc_index = 0;
- tc_index < devlink_sb->ingress_tc_count; tc_index++) {
- if (*p_idx < start) {
- (*p_idx)++;
- continue;
- }
- err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
- devlink_port,
- devlink_sb,
- tc_index,
- DEVLINK_SB_POOL_TYPE_INGRESS,
- DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
- portid, seq,
- NLM_F_MULTI);
- if (err)
- return err;
- (*p_idx)++;
- }
- for (tc_index = 0;
- tc_index < devlink_sb->egress_tc_count; tc_index++) {
- if (*p_idx < start) {
- (*p_idx)++;
- continue;
- }
- err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
- devlink_port,
- devlink_sb,
- tc_index,
- DEVLINK_SB_POOL_TYPE_EGRESS,
- DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
- portid, seq,
- NLM_F_MULTI);
- if (err)
- return err;
- (*p_idx)++;
- }
- }
- return 0;
-}
-
-static int
-devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- struct devlink_sb *devlink_sb;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (!devlink->ops->sb_tc_pool_bind_get)
- goto retry;
-
- devl_lock(devlink);
- list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
- devlink,
- devlink_sb,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq);
- if (err == -EOPNOTSUPP) {
- err = 0;
- } else if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- }
- devl_unlock(devlink);
-retry:
- devlink_put(devlink);
- }
-out:
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
- unsigned int sb_index, u16 tc_index,
- enum devlink_sb_pool_type pool_type,
- u16 pool_index, u32 threshold,
- struct netlink_ext_ack *extack)
-
-{
- const struct devlink_ops *ops = devlink_port->devlink->ops;
-
- if (ops->sb_tc_pool_bind_set)
- return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
- tc_index, pool_type,
- pool_index, threshold, extack);
- return -EOPNOTSUPP;
-}
-
-static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = info->user_ptr[0];
- enum devlink_sb_pool_type pool_type;
- struct devlink_sb *devlink_sb;
- u16 tc_index;
- u16 pool_index;
- u32 threshold;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- err = devlink_sb_pool_type_get_from_info(info, &pool_type);
- if (err)
- return err;
-
- err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
- pool_type, &tc_index);
- if (err)
- return err;
-
- err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
- &pool_index);
- if (err)
- return err;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SB_THRESHOLD))
- return -EINVAL;
-
- threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
- return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
- tc_index, pool_type,
- pool_index, threshold, info->extack);
-}
-
-static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- const struct devlink_ops *ops = devlink->ops;
- struct devlink_sb *devlink_sb;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- if (ops->sb_occ_snapshot)
- return ops->sb_occ_snapshot(devlink, devlink_sb->index);
- return -EOPNOTSUPP;
-}
-
-static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- const struct devlink_ops *ops = devlink->ops;
- struct devlink_sb *devlink_sb;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- if (ops->sb_occ_max_clear)
- return ops->sb_occ_max_clear(devlink, devlink_sb->index);
- return -EOPNOTSUPP;
-}
-
-static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags)
-{
- const struct devlink_ops *ops = devlink->ops;
- enum devlink_eswitch_encap_mode encap_mode;
- u8 inline_mode;
- void *hdr;
- int err = 0;
- u16 mode;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- err = devlink_nl_put_handle(msg, devlink);
- if (err)
- goto nla_put_failure;
-
- if (ops->eswitch_mode_get) {
- err = ops->eswitch_mode_get(devlink, &mode);
- if (err)
- goto nla_put_failure;
- err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
- if (err)
- goto nla_put_failure;
- }
-
- if (ops->eswitch_inline_mode_get) {
- err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
- if (err)
- goto nla_put_failure;
- err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
- inline_mode);
- if (err)
- goto nla_put_failure;
- }
-
- if (ops->eswitch_encap_mode_get) {
- err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
- if (err)
- goto nla_put_failure;
- err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
- if (err)
- goto nla_put_failure;
- }
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return err;
-}
-
-static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
- info->snd_portid, info->snd_seq, 0);
-
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_rate_nodes_check(struct devlink *devlink, u16 mode,
- struct netlink_ext_ack *extack)
-{
- struct devlink_rate *devlink_rate;
-
- list_for_each_entry(devlink_rate, &devlink->rate_list, list)
- if (devlink_rate_is_node(devlink_rate)) {
- NL_SET_ERR_MSG_MOD(extack, "Rate node(s) exists.");
- return -EBUSY;
- }
- return 0;
-}
-
-static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- const struct devlink_ops *ops = devlink->ops;
- enum devlink_eswitch_encap_mode encap_mode;
- u8 inline_mode;
- int err = 0;
- u16 mode;
-
- if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
- if (!ops->eswitch_mode_set)
- return -EOPNOTSUPP;
- mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
- err = devlink_rate_nodes_check(devlink, mode, info->extack);
- if (err)
- return err;
- err = ops->eswitch_mode_set(devlink, mode, info->extack);
- if (err)
- return err;
- }
-
- if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
- if (!ops->eswitch_inline_mode_set)
- return -EOPNOTSUPP;
- inline_mode = nla_get_u8(
- info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
- err = ops->eswitch_inline_mode_set(devlink, inline_mode,
- info->extack);
- if (err)
- return err;
- }
-
- if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
- if (!ops->eswitch_encap_mode_set)
- return -EOPNOTSUPP;
- encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
- err = ops->eswitch_encap_mode_set(devlink, encap_mode,
- info->extack);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-int devlink_dpipe_match_put(struct sk_buff *skb,
- struct devlink_dpipe_match *match)
-{
- struct devlink_dpipe_header *header = match->header;
- struct devlink_dpipe_field *field = &header->fields[match->field_id];
- struct nlattr *match_attr;
-
- match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
- if (!match_attr)
- return -EMSGSIZE;
-
- if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
- nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
- goto nla_put_failure;
-
- nla_nest_end(skb, match_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, match_attr);
- return -EMSGSIZE;
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
-
-static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
- struct sk_buff *skb)
-{
- struct nlattr *matches_attr;
-
- matches_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
- if (!matches_attr)
- return -EMSGSIZE;
-
- if (table->table_ops->matches_dump(table->priv, skb))
- goto nla_put_failure;
-
- nla_nest_end(skb, matches_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, matches_attr);
- return -EMSGSIZE;
-}
-
-int devlink_dpipe_action_put(struct sk_buff *skb,
- struct devlink_dpipe_action *action)
-{
- struct devlink_dpipe_header *header = action->header;
- struct devlink_dpipe_field *field = &header->fields[action->field_id];
- struct nlattr *action_attr;
-
- action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
- if (!action_attr)
- return -EMSGSIZE;
-
- if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
- nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
- goto nla_put_failure;
-
- nla_nest_end(skb, action_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, action_attr);
- return -EMSGSIZE;
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
-
-static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
- struct sk_buff *skb)
-{
- struct nlattr *actions_attr;
-
- actions_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
- if (!actions_attr)
- return -EMSGSIZE;
-
- if (table->table_ops->actions_dump(table->priv, skb))
- goto nla_put_failure;
-
- nla_nest_end(skb, actions_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, actions_attr);
- return -EMSGSIZE;
-}
-
-static int devlink_dpipe_table_put(struct sk_buff *skb,
- struct devlink_dpipe_table *table)
-{
- struct nlattr *table_attr;
- u64 table_size;
-
- table_size = table->table_ops->size_get(table->priv);
- table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
- if (!table_attr)
- return -EMSGSIZE;
-
- if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
- nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
- table->counters_enabled))
- goto nla_put_failure;
-
- if (table->resource_valid) {
- if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
- table->resource_id, DEVLINK_ATTR_PAD) ||
- nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
- table->resource_units, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- }
- if (devlink_dpipe_matches_put(table, skb))
- goto nla_put_failure;
-
- if (devlink_dpipe_actions_put(table, skb))
- goto nla_put_failure;
-
- nla_nest_end(skb, table_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, table_attr);
- return -EMSGSIZE;
-}
-
-static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
- struct genl_info *info)
-{
- int err;
-
- if (*pskb) {
- err = genlmsg_reply(*pskb, info);
- if (err)
- return err;
- }
- *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!*pskb)
- return -ENOMEM;
- return 0;
-}
-
-static int devlink_dpipe_tables_fill(struct genl_info *info,
- enum devlink_command cmd, int flags,
- struct list_head *dpipe_tables,
- const char *table_name)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_dpipe_table *table;
- struct nlattr *tables_attr;
- struct sk_buff *skb = NULL;
- struct nlmsghdr *nlh;
- bool incomplete;
- void *hdr;
- int i;
- int err;
-
- table = list_first_entry(dpipe_tables,
- struct devlink_dpipe_table, list);
-start_again:
- err = devlink_dpipe_send_and_alloc_skb(&skb, info);
- if (err)
- return err;
-
- hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
- &devlink_nl_family, NLM_F_MULTI, cmd);
- if (!hdr) {
- nlmsg_free(skb);
- return -EMSGSIZE;
- }
-
- if (devlink_nl_put_handle(skb, devlink))
- goto nla_put_failure;
- tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
- if (!tables_attr)
- goto nla_put_failure;
-
- i = 0;
- incomplete = false;
- list_for_each_entry_from(table, dpipe_tables, list) {
- if (!table_name) {
- err = devlink_dpipe_table_put(skb, table);
- if (err) {
- if (!i)
- goto err_table_put;
- incomplete = true;
- break;
- }
- } else {
- if (!strcmp(table->name, table_name)) {
- err = devlink_dpipe_table_put(skb, table);
- if (err)
- break;
- }
- }
- i++;
- }
-
- nla_nest_end(skb, tables_attr);
- genlmsg_end(skb, hdr);
- if (incomplete)
- goto start_again;
-
-send_done:
- nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
- NLMSG_DONE, 0, flags | NLM_F_MULTI);
- if (!nlh) {
- err = devlink_dpipe_send_and_alloc_skb(&skb, info);
- if (err)
- return err;
- goto send_done;
- }
-
- return genlmsg_reply(skb, info);
-
-nla_put_failure:
- err = -EMSGSIZE;
-err_table_put:
- nlmsg_free(skb);
- return err;
-}
-
-static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- const char *table_name = NULL;
-
- if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
- table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
-
- return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
- &devlink->dpipe_table_list,
- table_name);
-}
-
-static int devlink_dpipe_value_put(struct sk_buff *skb,
- struct devlink_dpipe_value *value)
-{
- if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
- value->value_size, value->value))
- return -EMSGSIZE;
- if (value->mask)
- if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
- value->value_size, value->mask))
- return -EMSGSIZE;
- if (value->mapping_valid)
- if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
- value->mapping_value))
- return -EMSGSIZE;
- return 0;
-}
-
-static int devlink_dpipe_action_value_put(struct sk_buff *skb,
- struct devlink_dpipe_value *value)
-{
- if (!value->action)
- return -EINVAL;
- if (devlink_dpipe_action_put(skb, value->action))
- return -EMSGSIZE;
- if (devlink_dpipe_value_put(skb, value))
- return -EMSGSIZE;
- return 0;
-}
-
-static int devlink_dpipe_action_values_put(struct sk_buff *skb,
- struct devlink_dpipe_value *values,
- unsigned int values_count)
-{
- struct nlattr *action_attr;
- int i;
- int err;
-
- for (i = 0; i < values_count; i++) {
- action_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_ACTION_VALUE);
- if (!action_attr)
- return -EMSGSIZE;
- err = devlink_dpipe_action_value_put(skb, &values[i]);
- if (err)
- goto err_action_value_put;
- nla_nest_end(skb, action_attr);
- }
- return 0;
-
-err_action_value_put:
- nla_nest_cancel(skb, action_attr);
- return err;
-}
-
-static int devlink_dpipe_match_value_put(struct sk_buff *skb,
- struct devlink_dpipe_value *value)
-{
- if (!value->match)
- return -EINVAL;
- if (devlink_dpipe_match_put(skb, value->match))
- return -EMSGSIZE;
- if (devlink_dpipe_value_put(skb, value))
- return -EMSGSIZE;
- return 0;
-}
-
-static int devlink_dpipe_match_values_put(struct sk_buff *skb,
- struct devlink_dpipe_value *values,
- unsigned int values_count)
-{
- struct nlattr *match_attr;
- int i;
- int err;
-
- for (i = 0; i < values_count; i++) {
- match_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_MATCH_VALUE);
- if (!match_attr)
- return -EMSGSIZE;
- err = devlink_dpipe_match_value_put(skb, &values[i]);
- if (err)
- goto err_match_value_put;
- nla_nest_end(skb, match_attr);
- }
- return 0;
-
-err_match_value_put:
- nla_nest_cancel(skb, match_attr);
- return err;
-}
-
-static int devlink_dpipe_entry_put(struct sk_buff *skb,
- struct devlink_dpipe_entry *entry)
-{
- struct nlattr *entry_attr, *matches_attr, *actions_attr;
- int err;
-
- entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
- if (!entry_attr)
- return -EMSGSIZE;
-
- if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- if (entry->counter_valid)
- if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
- entry->counter, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- matches_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
- if (!matches_attr)
- goto nla_put_failure;
-
- err = devlink_dpipe_match_values_put(skb, entry->match_values,
- entry->match_values_count);
- if (err) {
- nla_nest_cancel(skb, matches_attr);
- goto err_match_values_put;
- }
- nla_nest_end(skb, matches_attr);
-
- actions_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
- if (!actions_attr)
- goto nla_put_failure;
-
- err = devlink_dpipe_action_values_put(skb, entry->action_values,
- entry->action_values_count);
- if (err) {
- nla_nest_cancel(skb, actions_attr);
- goto err_action_values_put;
- }
- nla_nest_end(skb, actions_attr);
-
- nla_nest_end(skb, entry_attr);
- return 0;
-
-nla_put_failure:
- err = -EMSGSIZE;
-err_match_values_put:
-err_action_values_put:
- nla_nest_cancel(skb, entry_attr);
- return err;
-}
-
-static struct devlink_dpipe_table *
-devlink_dpipe_table_find(struct list_head *dpipe_tables,
- const char *table_name, struct devlink *devlink)
-{
- struct devlink_dpipe_table *table;
- list_for_each_entry_rcu(table, dpipe_tables, list,
- lockdep_is_held(&devlink->lock)) {
- if (!strcmp(table->name, table_name))
- return table;
- }
- return NULL;
-}
-
-int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
-{
- struct devlink *devlink;
- int err;
-
- err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
- dump_ctx->info);
- if (err)
- return err;
-
- dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
- dump_ctx->info->snd_portid,
- dump_ctx->info->snd_seq,
- &devlink_nl_family, NLM_F_MULTI,
- dump_ctx->cmd);
- if (!dump_ctx->hdr)
- goto nla_put_failure;
-
- devlink = dump_ctx->info->user_ptr[0];
- if (devlink_nl_put_handle(dump_ctx->skb, devlink))
- goto nla_put_failure;
- dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
- DEVLINK_ATTR_DPIPE_ENTRIES);
- if (!dump_ctx->nest)
- goto nla_put_failure;
- return 0;
-
-nla_put_failure:
- nlmsg_free(dump_ctx->skb);
- return -EMSGSIZE;
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
-
-int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
- struct devlink_dpipe_entry *entry)
-{
- return devlink_dpipe_entry_put(dump_ctx->skb, entry);
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
-
-int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
-{
- nla_nest_end(dump_ctx->skb, dump_ctx->nest);
- genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
-
-void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
-
-{
- unsigned int value_count, value_index;
- struct devlink_dpipe_value *value;
-
- value = entry->action_values;
- value_count = entry->action_values_count;
- for (value_index = 0; value_index < value_count; value_index++) {
- kfree(value[value_index].value);
- kfree(value[value_index].mask);
- }
-
- value = entry->match_values;
- value_count = entry->match_values_count;
- for (value_index = 0; value_index < value_count; value_index++) {
- kfree(value[value_index].value);
- kfree(value[value_index].mask);
- }
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_entry_clear);
-
-static int devlink_dpipe_entries_fill(struct genl_info *info,
- enum devlink_command cmd, int flags,
- struct devlink_dpipe_table *table)
-{
- struct devlink_dpipe_dump_ctx dump_ctx;
- struct nlmsghdr *nlh;
- int err;
-
- dump_ctx.skb = NULL;
- dump_ctx.cmd = cmd;
- dump_ctx.info = info;
-
- err = table->table_ops->entries_dump(table->priv,
- table->counters_enabled,
- &dump_ctx);
- if (err)
- return err;
-
-send_done:
- nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
- NLMSG_DONE, 0, flags | NLM_F_MULTI);
- if (!nlh) {
- err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
- if (err)
- return err;
- goto send_done;
- }
- return genlmsg_reply(dump_ctx.skb, info);
-}
-
-static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_dpipe_table *table;
- const char *table_name;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_DPIPE_TABLE_NAME))
- return -EINVAL;
-
- table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
- table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name, devlink);
- if (!table)
- return -EINVAL;
-
- if (!table->table_ops->entries_dump)
- return -EINVAL;
-
- return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
- 0, table);
-}
-
-static int devlink_dpipe_fields_put(struct sk_buff *skb,
- const struct devlink_dpipe_header *header)
-{
- struct devlink_dpipe_field *field;
- struct nlattr *field_attr;
- int i;
-
- for (i = 0; i < header->fields_count; i++) {
- field = &header->fields[i];
- field_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_FIELD);
- if (!field_attr)
- return -EMSGSIZE;
- if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
- goto nla_put_failure;
- nla_nest_end(skb, field_attr);
- }
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, field_attr);
- return -EMSGSIZE;
-}
-
-static int devlink_dpipe_header_put(struct sk_buff *skb,
- struct devlink_dpipe_header *header)
-{
- struct nlattr *fields_attr, *header_attr;
- int err;
-
- header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
- if (!header_attr)
- return -EMSGSIZE;
-
- if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
- nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
- goto nla_put_failure;
-
- fields_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
- if (!fields_attr)
- goto nla_put_failure;
-
- err = devlink_dpipe_fields_put(skb, header);
- if (err) {
- nla_nest_cancel(skb, fields_attr);
- goto nla_put_failure;
- }
- nla_nest_end(skb, fields_attr);
- nla_nest_end(skb, header_attr);
- return 0;
-
-nla_put_failure:
- err = -EMSGSIZE;
- nla_nest_cancel(skb, header_attr);
- return err;
-}
-
-static int devlink_dpipe_headers_fill(struct genl_info *info,
- enum devlink_command cmd, int flags,
- struct devlink_dpipe_headers *
- dpipe_headers)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct nlattr *headers_attr;
- struct sk_buff *skb = NULL;
- struct nlmsghdr *nlh;
- void *hdr;
- int i, j;
- int err;
-
- i = 0;
-start_again:
- err = devlink_dpipe_send_and_alloc_skb(&skb, info);
- if (err)
- return err;
-
- hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
- &devlink_nl_family, NLM_F_MULTI, cmd);
- if (!hdr) {
- nlmsg_free(skb);
- return -EMSGSIZE;
- }
-
- if (devlink_nl_put_handle(skb, devlink))
- goto nla_put_failure;
- headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
- if (!headers_attr)
- goto nla_put_failure;
-
- j = 0;
- for (; i < dpipe_headers->headers_count; i++) {
- err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
- if (err) {
- if (!j)
- goto err_table_put;
- break;
- }
- j++;
- }
- nla_nest_end(skb, headers_attr);
- genlmsg_end(skb, hdr);
- if (i != dpipe_headers->headers_count)
- goto start_again;
-
-send_done:
- nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
- NLMSG_DONE, 0, flags | NLM_F_MULTI);
- if (!nlh) {
- err = devlink_dpipe_send_and_alloc_skb(&skb, info);
- if (err)
- return err;
- goto send_done;
- }
- return genlmsg_reply(skb, info);
-
-nla_put_failure:
- err = -EMSGSIZE;
-err_table_put:
- nlmsg_free(skb);
- return err;
-}
-
-static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
-
- if (!devlink->dpipe_headers)
- return -EOPNOTSUPP;
- return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
- 0, devlink->dpipe_headers);
-}
-
-static int devlink_dpipe_table_counters_set(struct devlink *devlink,
- const char *table_name,
- bool enable)
-{
- struct devlink_dpipe_table *table;
-
- table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name, devlink);
- if (!table)
- return -EINVAL;
-
- if (table->counter_control_extern)
- return -EOPNOTSUPP;
-
- if (!(table->counters_enabled ^ enable))
- return 0;
-
- table->counters_enabled = enable;
- if (table->table_ops->counters_set_update)
- table->table_ops->counters_set_update(table->priv, enable);
- return 0;
-}
-
-static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- const char *table_name;
- bool counters_enable;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_DPIPE_TABLE_NAME) ||
- GENL_REQ_ATTR_CHECK(info,
- DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED))
- return -EINVAL;
-
- table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
- counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
-
- return devlink_dpipe_table_counters_set(devlink, table_name,
- counters_enable);
-}
-
-static struct devlink_resource *
-devlink_resource_find(struct devlink *devlink,
- struct devlink_resource *resource, u64 resource_id)
-{
- struct list_head *resource_list;
-
- if (resource)
- resource_list = &resource->resource_list;
- else
- resource_list = &devlink->resource_list;
-
- list_for_each_entry(resource, resource_list, list) {
- struct devlink_resource *child_resource;
-
- if (resource->id == resource_id)
- return resource;
-
- child_resource = devlink_resource_find(devlink, resource,
- resource_id);
- if (child_resource)
- return child_resource;
- }
- return NULL;
-}
-
-static void
-devlink_resource_validate_children(struct devlink_resource *resource)
-{
- struct devlink_resource *child_resource;
- bool size_valid = true;
- u64 parts_size = 0;
-
- if (list_empty(&resource->resource_list))
- goto out;
-
- list_for_each_entry(child_resource, &resource->resource_list, list)
- parts_size += child_resource->size_new;
-
- if (parts_size > resource->size_new)
- size_valid = false;
-out:
- resource->size_valid = size_valid;
-}
-
-static int
-devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
- struct netlink_ext_ack *extack)
-{
- u64 reminder;
- int err = 0;
-
- if (size > resource->size_params.size_max) {
- NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
- err = -EINVAL;
- }
-
- if (size < resource->size_params.size_min) {
- NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
- err = -EINVAL;
- }
-
- div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
- if (reminder) {
- NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
- err = -EINVAL;
- }
-
- return err;
-}
-
-static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_resource *resource;
- u64 resource_id;
- u64 size;
- int err;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_RESOURCE_ID) ||
- GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_RESOURCE_SIZE))
- return -EINVAL;
- resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
-
- resource = devlink_resource_find(devlink, NULL, resource_id);
- if (!resource)
- return -EINVAL;
-
- size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
- err = devlink_resource_validate_size(resource, size, info->extack);
- if (err)
- return err;
-
- resource->size_new = size;
- devlink_resource_validate_children(resource);
- if (resource->parent)
- devlink_resource_validate_children(resource->parent);
- return 0;
-}
-
-static int
-devlink_resource_size_params_put(struct devlink_resource *resource,
- struct sk_buff *skb)
-{
- struct devlink_resource_size_params *size_params;
-
- size_params = &resource->size_params;
- if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
- size_params->size_granularity, DEVLINK_ATTR_PAD) ||
- nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
- size_params->size_max, DEVLINK_ATTR_PAD) ||
- nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
- size_params->size_min, DEVLINK_ATTR_PAD) ||
- nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
- return -EMSGSIZE;
- return 0;
-}
-
-static int devlink_resource_occ_put(struct devlink_resource *resource,
- struct sk_buff *skb)
-{
- if (!resource->occ_get)
- return 0;
- return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
- resource->occ_get(resource->occ_get_priv),
- DEVLINK_ATTR_PAD);
-}
-
-static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
- struct devlink_resource *resource)
-{
- struct devlink_resource *child_resource;
- struct nlattr *child_resource_attr;
- struct nlattr *resource_attr;
-
- resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
- if (!resource_attr)
- return -EMSGSIZE;
-
- if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
- nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
- DEVLINK_ATTR_PAD) ||
- nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- if (resource->size != resource->size_new &&
- nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
- resource->size_new, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- if (devlink_resource_occ_put(resource, skb))
- goto nla_put_failure;
- if (devlink_resource_size_params_put(resource, skb))
- goto nla_put_failure;
- if (list_empty(&resource->resource_list))
- goto out;
-
- if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
- resource->size_valid))
- goto nla_put_failure;
-
- child_resource_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_RESOURCE_LIST);
- if (!child_resource_attr)
- goto nla_put_failure;
-
- list_for_each_entry(child_resource, &resource->resource_list, list) {
- if (devlink_resource_put(devlink, skb, child_resource))
- goto resource_put_failure;
- }
-
- nla_nest_end(skb, child_resource_attr);
-out:
- nla_nest_end(skb, resource_attr);
- return 0;
-
-resource_put_failure:
- nla_nest_cancel(skb, child_resource_attr);
-nla_put_failure:
- nla_nest_cancel(skb, resource_attr);
- return -EMSGSIZE;
-}
-
-static int devlink_resource_fill(struct genl_info *info,
- enum devlink_command cmd, int flags)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_resource *resource;
- struct nlattr *resources_attr;
- struct sk_buff *skb = NULL;
- struct nlmsghdr *nlh;
- bool incomplete;
- void *hdr;
- int i;
- int err;
-
- resource = list_first_entry(&devlink->resource_list,
- struct devlink_resource, list);
-start_again:
- err = devlink_dpipe_send_and_alloc_skb(&skb, info);
- if (err)
- return err;
-
- hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
- &devlink_nl_family, NLM_F_MULTI, cmd);
- if (!hdr) {
- nlmsg_free(skb);
- return -EMSGSIZE;
- }
-
- if (devlink_nl_put_handle(skb, devlink))
- goto nla_put_failure;
-
- resources_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_RESOURCE_LIST);
- if (!resources_attr)
- goto nla_put_failure;
-
- incomplete = false;
- i = 0;
- list_for_each_entry_from(resource, &devlink->resource_list, list) {
- err = devlink_resource_put(devlink, skb, resource);
- if (err) {
- if (!i)
- goto err_resource_put;
- incomplete = true;
- break;
- }
- i++;
- }
- nla_nest_end(skb, resources_attr);
- genlmsg_end(skb, hdr);
- if (incomplete)
- goto start_again;
-send_done:
- nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
- NLMSG_DONE, 0, flags | NLM_F_MULTI);
- if (!nlh) {
- err = devlink_dpipe_send_and_alloc_skb(&skb, info);
- if (err)
- return err;
- goto send_done;
- }
- return genlmsg_reply(skb, info);
-
-nla_put_failure:
- err = -EMSGSIZE;
-err_resource_put:
- nlmsg_free(skb);
- return err;
-}
-
-static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
-
- if (list_empty(&devlink->resource_list))
- return -EOPNOTSUPP;
-
- return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
-}
-
-static int
-devlink_resources_validate(struct devlink *devlink,
- struct devlink_resource *resource,
- struct genl_info *info)
-{
- struct list_head *resource_list;
- int err = 0;
-
- if (resource)
- resource_list = &resource->resource_list;
- else
- resource_list = &devlink->resource_list;
-
- list_for_each_entry(resource, resource_list, list) {
- if (!resource->size_valid)
- return -EINVAL;
- err = devlink_resources_validate(devlink, resource, info);
- if (err)
- return err;
- }
- return err;
-}
-
-static struct net *devlink_netns_get(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
- struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
- struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
- struct net *net;
-
- if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
- NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
- return ERR_PTR(-EINVAL);
- }
-
- if (netns_pid_attr) {
- net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
- } else if (netns_fd_attr) {
- net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
- } else if (netns_id_attr) {
- net = get_net_ns_by_id(sock_net(skb->sk),
- nla_get_u32(netns_id_attr));
- if (!net)
- net = ERR_PTR(-EINVAL);
- } else {
- WARN_ON(1);
- net = ERR_PTR(-EINVAL);
- }
- if (IS_ERR(net)) {
- NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
- return ERR_PTR(-EINVAL);
- }
- if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
- put_net(net);
- return ERR_PTR(-EPERM);
- }
- return net;
-}
-
-static void devlink_param_notify(struct devlink *devlink,
- unsigned int port_index,
- struct devlink_param_item *param_item,
- enum devlink_command cmd);
-
-static void devlink_ns_change_notify(struct devlink *devlink,
- struct net *dest_net, struct net *curr_net,
- bool new)
-{
- struct devlink_param_item *param_item;
- enum devlink_command cmd;
-
- /* Userspace needs to be notified about devlink objects
- * removed from original and entering new network namespace.
- * The rest of the devlink objects are re-created during
- * reload process so the notifications are generated separatelly.
- */
-
- if (!dest_net || net_eq(dest_net, curr_net))
- return;
-
- if (new)
- devlink_notify(devlink, DEVLINK_CMD_NEW);
-
- cmd = new ? DEVLINK_CMD_PARAM_NEW : DEVLINK_CMD_PARAM_DEL;
- list_for_each_entry(param_item, &devlink->param_list, list)
- devlink_param_notify(devlink, 0, param_item, cmd);
-
- if (!new)
- devlink_notify(devlink, DEVLINK_CMD_DEL);
-}
-
-static bool devlink_reload_supported(const struct devlink_ops *ops)
-{
- return ops->reload_down && ops->reload_up;
-}
-
-static void devlink_reload_failed_set(struct devlink *devlink,
- bool reload_failed)
-{
- if (devlink->reload_failed == reload_failed)
- return;
- devlink->reload_failed = reload_failed;
- devlink_notify(devlink, DEVLINK_CMD_NEW);
-}
-
-bool devlink_is_reload_failed(const struct devlink *devlink)
-{
- return devlink->reload_failed;
-}
-EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
-
-static void
-__devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
- enum devlink_reload_limit limit, u32 actions_performed)
-{
- unsigned long actions = actions_performed;
- int stat_idx;
- int action;
-
- for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
- stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
- reload_stats[stat_idx]++;
- }
- devlink_notify(devlink, DEVLINK_CMD_NEW);
-}
-
-static void
-devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
- u32 actions_performed)
-{
- __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
- actions_performed);
-}
-
-/**
- * devlink_remote_reload_actions_performed - Update devlink on reload actions
- * performed which are not a direct result of devlink reload call.
- *
- * This should be called by a driver after performing reload actions in case it was not
- * a result of devlink reload call. For example fw_activate was performed as a result
- * of devlink reload triggered fw_activate on another host.
- * The motivation for this function is to keep data on reload actions performed on this
- * function whether it was done due to direct devlink reload call or not.
- *
- * @devlink: devlink
- * @limit: reload limit
- * @actions_performed: bitmask of actions performed
- */
-void devlink_remote_reload_actions_performed(struct devlink *devlink,
- enum devlink_reload_limit limit,
- u32 actions_performed)
-{
- if (WARN_ON(!actions_performed ||
- actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
- actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
- limit > DEVLINK_RELOAD_LIMIT_MAX))
- return;
-
- __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
- actions_performed);
-}
-EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
-
-static int devlink_reload(struct devlink *devlink, struct net *dest_net,
- enum devlink_reload_action action, enum devlink_reload_limit limit,
- u32 *actions_performed, struct netlink_ext_ack *extack)
-{
- u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
- struct net *curr_net;
- int err;
-
- memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
- sizeof(remote_reload_stats));
-
- curr_net = devlink_net(devlink);
- devlink_ns_change_notify(devlink, dest_net, curr_net, false);
- err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
- if (err)
- return err;
-
- if (dest_net && !net_eq(dest_net, curr_net)) {
- move_netdevice_notifier_net(curr_net, dest_net,
- &devlink->netdevice_nb);
- write_pnet(&devlink->_net, dest_net);
- }
-
- err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
- devlink_reload_failed_set(devlink, !!err);
- if (err)
- return err;
-
- devlink_ns_change_notify(devlink, dest_net, curr_net, true);
- WARN_ON(!(*actions_performed & BIT(action)));
- /* Catch driver on updating the remote action within devlink reload */
- WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
- sizeof(remote_reload_stats)));
- devlink_reload_stats_update(devlink, limit, *actions_performed);
- return 0;
-}
-
-static int
-devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
- enum devlink_command cmd, struct genl_info *info)
-{
- struct sk_buff *msg;
- void *hdr;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
- if (!hdr)
- goto free_msg;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
- actions_performed))
- goto nla_put_failure;
- genlmsg_end(msg, hdr);
-
- return genlmsg_reply(msg, info);
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
-free_msg:
- nlmsg_free(msg);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- enum devlink_reload_action action;
- enum devlink_reload_limit limit;
- struct net *dest_net = NULL;
- u32 actions_performed;
- int err;
-
- if (!(devlink->features & DEVLINK_F_RELOAD))
- return -EOPNOTSUPP;
-
- err = devlink_resources_validate(devlink, NULL, info);
- if (err) {
- NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
- return err;
- }
-
- if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
- action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
- else
- action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
-
- if (!devlink_reload_action_is_supported(devlink, action)) {
- NL_SET_ERR_MSG_MOD(info->extack,
- "Requested reload action is not supported by the driver");
- return -EOPNOTSUPP;
- }
-
- limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
- if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
- struct nla_bitfield32 limits;
- u32 limits_selected;
-
- limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
- limits_selected = limits.value & limits.selector;
- if (!limits_selected) {
- NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
- return -EINVAL;
- }
- for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
- if (limits_selected & BIT(limit))
- break;
- /* UAPI enables multiselection, but currently it is not used */
- if (limits_selected != BIT(limit)) {
- NL_SET_ERR_MSG_MOD(info->extack,
- "Multiselection of limit is not supported");
- return -EOPNOTSUPP;
- }
- if (!devlink_reload_limit_is_supported(devlink, limit)) {
- NL_SET_ERR_MSG_MOD(info->extack,
- "Requested limit is not supported by the driver");
- return -EOPNOTSUPP;
- }
- if (devlink_reload_combination_is_invalid(action, limit)) {
- NL_SET_ERR_MSG_MOD(info->extack,
- "Requested limit is invalid for this action");
- return -EINVAL;
- }
- }
- if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
- info->attrs[DEVLINK_ATTR_NETNS_FD] ||
- info->attrs[DEVLINK_ATTR_NETNS_ID]) {
- dest_net = devlink_netns_get(skb, info);
- if (IS_ERR(dest_net))
- return PTR_ERR(dest_net);
- }
-
- err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
-
- if (dest_net)
- put_net(dest_net);
-
- if (err)
- return err;
- /* For backward compatibility generate reply only if attributes used by user */
- if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
- return 0;
-
- return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
- DEVLINK_CMD_RELOAD, info);
-}
-
-static int devlink_nl_flash_update_fill(struct sk_buff *msg,
- struct devlink *devlink,
- enum devlink_command cmd,
- struct devlink_flash_notify *params)
-{
- void *hdr;
-
- hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
- goto out;
-
- if (params->status_msg &&
- nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
- params->status_msg))
- goto nla_put_failure;
- if (params->component &&
- nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
- params->component))
- goto nla_put_failure;
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
- params->done, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
- params->total, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
- params->timeout, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
-out:
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void __devlink_flash_update_notify(struct devlink *devlink,
- enum devlink_command cmd,
- struct devlink_flash_notify *params)
-{
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
- cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
- cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
-
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
- if (err)
- goto out_free_msg;
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
- return;
-
-out_free_msg:
- nlmsg_free(msg);
-}
-
-static void devlink_flash_update_begin_notify(struct devlink *devlink)
-{
- struct devlink_flash_notify params = {};
-
- __devlink_flash_update_notify(devlink,
- DEVLINK_CMD_FLASH_UPDATE,
- ¶ms);
-}
-
-static void devlink_flash_update_end_notify(struct devlink *devlink)
-{
- struct devlink_flash_notify params = {};
-
- __devlink_flash_update_notify(devlink,
- DEVLINK_CMD_FLASH_UPDATE_END,
- ¶ms);
-}
-
-void devlink_flash_update_status_notify(struct devlink *devlink,
- const char *status_msg,
- const char *component,
- unsigned long done,
- unsigned long total)
-{
- struct devlink_flash_notify params = {
- .status_msg = status_msg,
- .component = component,
- .done = done,
- .total = total,
- };
-
- __devlink_flash_update_notify(devlink,
- DEVLINK_CMD_FLASH_UPDATE_STATUS,
- ¶ms);
-}
-EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
-
-void devlink_flash_update_timeout_notify(struct devlink *devlink,
- const char *status_msg,
- const char *component,
- unsigned long timeout)
-{
- struct devlink_flash_notify params = {
- .status_msg = status_msg,
- .component = component,
- .timeout = timeout,
- };
-
- __devlink_flash_update_notify(devlink,
- DEVLINK_CMD_FLASH_UPDATE_STATUS,
- ¶ms);
-}
-EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
-
-struct devlink_info_req {
- struct sk_buff *msg;
- void (*version_cb)(const char *version_name,
- enum devlink_info_version_type version_type,
- void *version_cb_priv);
- void *version_cb_priv;
-};
-
-struct devlink_flash_component_lookup_ctx {
- const char *lookup_name;
- bool lookup_name_found;
-};
-
-static void
-devlink_flash_component_lookup_cb(const char *version_name,
- enum devlink_info_version_type version_type,
- void *version_cb_priv)
-{
- struct devlink_flash_component_lookup_ctx *lookup_ctx = version_cb_priv;
-
- if (version_type != DEVLINK_INFO_VERSION_TYPE_COMPONENT ||
- lookup_ctx->lookup_name_found)
- return;
-
- lookup_ctx->lookup_name_found =
- !strcmp(lookup_ctx->lookup_name, version_name);
-}
-
-static int devlink_flash_component_get(struct devlink *devlink,
- struct nlattr *nla_component,
- const char **p_component,
- struct netlink_ext_ack *extack)
-{
- struct devlink_flash_component_lookup_ctx lookup_ctx = {};
- struct devlink_info_req req = {};
- const char *component;
- int ret;
-
- if (!nla_component)
- return 0;
-
- component = nla_data(nla_component);
-
- if (!devlink->ops->info_get) {
- NL_SET_ERR_MSG_ATTR(extack, nla_component,
- "component update is not supported by this device");
- return -EOPNOTSUPP;
- }
-
- lookup_ctx.lookup_name = component;
- req.version_cb = devlink_flash_component_lookup_cb;
- req.version_cb_priv = &lookup_ctx;
-
- ret = devlink->ops->info_get(devlink, &req, NULL);
- if (ret)
- return ret;
-
- if (!lookup_ctx.lookup_name_found) {
- NL_SET_ERR_MSG_ATTR(extack, nla_component,
- "selected component is not supported by this device");
- return -EINVAL;
- }
- *p_component = component;
- return 0;
-}
-
-static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct nlattr *nla_overwrite_mask, *nla_file_name;
- struct devlink_flash_update_params params = {};
- struct devlink *devlink = info->user_ptr[0];
- const char *file_name;
- u32 supported_params;
- int ret;
-
- if (!devlink->ops->flash_update)
- return -EOPNOTSUPP;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME))
- return -EINVAL;
-
- ret = devlink_flash_component_get(devlink,
- info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT],
- ¶ms.component, info->extack);
- if (ret)
- return ret;
-
- supported_params = devlink->ops->supported_flash_update_params;
-
- nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
- if (nla_overwrite_mask) {
- struct nla_bitfield32 sections;
-
- if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
- NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
- "overwrite settings are not supported by this device");
- return -EOPNOTSUPP;
- }
- sections = nla_get_bitfield32(nla_overwrite_mask);
- params.overwrite_mask = sections.value & sections.selector;
- }
-
- nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
- file_name = nla_data(nla_file_name);
- ret = request_firmware(¶ms.fw, file_name, devlink->dev);
- if (ret) {
- NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name, "failed to locate the requested firmware file");
- return ret;
- }
-
- devlink_flash_update_begin_notify(devlink);
- ret = devlink->ops->flash_update(devlink, ¶ms, info->extack);
- devlink_flash_update_end_notify(devlink);
-
- release_firmware(params.fw);
-
- return ret;
-}
-
-static int
-devlink_nl_selftests_fill(struct sk_buff *msg, struct devlink *devlink,
- u32 portid, u32 seq, int flags,
- struct netlink_ext_ack *extack)
-{
- struct nlattr *selftests;
- void *hdr;
- int err;
- int i;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags,
- DEVLINK_CMD_SELFTESTS_GET);
- if (!hdr)
- return -EMSGSIZE;
-
- err = -EMSGSIZE;
- if (devlink_nl_put_handle(msg, devlink))
- goto err_cancel_msg;
-
- selftests = nla_nest_start(msg, DEVLINK_ATTR_SELFTESTS);
- if (!selftests)
- goto err_cancel_msg;
-
- for (i = DEVLINK_ATTR_SELFTEST_ID_UNSPEC + 1;
- i <= DEVLINK_ATTR_SELFTEST_ID_MAX; i++) {
- if (devlink->ops->selftest_check(devlink, i, extack)) {
- err = nla_put_flag(msg, i);
- if (err)
- goto err_cancel_msg;
- }
- }
-
- nla_nest_end(msg, selftests);
- genlmsg_end(msg, hdr);
- return 0;
-
-err_cancel_msg:
- genlmsg_cancel(msg, hdr);
- return err;
-}
-
-static int devlink_nl_cmd_selftests_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct sk_buff *msg;
- int err;
-
- if (!devlink->ops->selftest_check)
- return -EOPNOTSUPP;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_selftests_fill(msg, devlink, info->snd_portid,
- info->snd_seq, 0, info->extack);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_selftests_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (idx < start || !devlink->ops->selftest_check)
- goto inc;
-
- devl_lock(devlink);
- err = devlink_nl_selftests_fill(msg, devlink,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq, NLM_F_MULTI,
- cb->extack);
- devl_unlock(devlink);
- if (err) {
- devlink_put(devlink);
- break;
- }
-inc:
- idx++;
- devlink_put(devlink);
- }
-
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_selftest_result_put(struct sk_buff *skb, unsigned int id,
- enum devlink_selftest_status test_status)
-{
- struct nlattr *result_attr;
-
- result_attr = nla_nest_start(skb, DEVLINK_ATTR_SELFTEST_RESULT);
- if (!result_attr)
- return -EMSGSIZE;
-
- if (nla_put_u32(skb, DEVLINK_ATTR_SELFTEST_RESULT_ID, id) ||
- nla_put_u8(skb, DEVLINK_ATTR_SELFTEST_RESULT_STATUS,
- test_status))
- goto nla_put_failure;
-
- nla_nest_end(skb, result_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, result_attr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_selftests_run(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct nlattr *tb[DEVLINK_ATTR_SELFTEST_ID_MAX + 1];
- struct devlink *devlink = info->user_ptr[0];
- struct nlattr *attrs, *selftests;
- struct sk_buff *msg;
- void *hdr;
- int err;
- int i;
-
- if (!devlink->ops->selftest_run || !devlink->ops->selftest_check)
- return -EOPNOTSUPP;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SELFTESTS))
- return -EINVAL;
-
- attrs = info->attrs[DEVLINK_ATTR_SELFTESTS];
-
- err = nla_parse_nested(tb, DEVLINK_ATTR_SELFTEST_ID_MAX, attrs,
- devlink_selftest_nl_policy, info->extack);
- if (err < 0)
- return err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = -EMSGSIZE;
- hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
- &devlink_nl_family, 0, DEVLINK_CMD_SELFTESTS_RUN);
- if (!hdr)
- goto free_msg;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto genlmsg_cancel;
-
- selftests = nla_nest_start(msg, DEVLINK_ATTR_SELFTESTS);
- if (!selftests)
- goto genlmsg_cancel;
-
- for (i = DEVLINK_ATTR_SELFTEST_ID_UNSPEC + 1;
- i <= DEVLINK_ATTR_SELFTEST_ID_MAX; i++) {
- enum devlink_selftest_status test_status;
-
- if (nla_get_flag(tb[i])) {
- if (!devlink->ops->selftest_check(devlink, i,
- info->extack)) {
- if (devlink_selftest_result_put(msg, i,
- DEVLINK_SELFTEST_STATUS_SKIP))
- goto selftests_nest_cancel;
- continue;
- }
-
- test_status = devlink->ops->selftest_run(devlink, i,
- info->extack);
- if (devlink_selftest_result_put(msg, i, test_status))
- goto selftests_nest_cancel;
- }
- }
-
- nla_nest_end(msg, selftests);
- genlmsg_end(msg, hdr);
- return genlmsg_reply(msg, info);
-
-selftests_nest_cancel:
- nla_nest_cancel(msg, selftests);
-genlmsg_cancel:
- genlmsg_cancel(msg, hdr);
-free_msg:
- nlmsg_free(msg);
- return err;
-}
-
-static const struct devlink_param devlink_param_generic[] = {
- {
- .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
- .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
- .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
- .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
- .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
- .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
- .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
- .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
- .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
- .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
- .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
- .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
- .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
- .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
- .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
- .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
- .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ETH,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_ETH_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_ETH_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_VNET_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_VNET_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
- .name = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME,
- .type = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE,
- .name = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME,
- .type = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE,
- },
-};
-
-static int devlink_param_generic_verify(const struct devlink_param *param)
-{
- /* verify it match generic parameter by id and name */
- if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
- return -EINVAL;
- if (strcmp(param->name, devlink_param_generic[param->id].name))
- return -ENOENT;
-
- WARN_ON(param->type != devlink_param_generic[param->id].type);
-
- return 0;
-}
-
-static int devlink_param_driver_verify(const struct devlink_param *param)
-{
- int i;
-
- if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
- return -EINVAL;
- /* verify no such name in generic params */
- for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
- if (!strcmp(param->name, devlink_param_generic[i].name))
- return -EEXIST;
-
- return 0;
-}
-
-static struct devlink_param_item *
-devlink_param_find_by_name(struct list_head *param_list,
- const char *param_name)
-{
- struct devlink_param_item *param_item;
-
- list_for_each_entry(param_item, param_list, list)
- if (!strcmp(param_item->param->name, param_name))
- return param_item;
- return NULL;
-}
-
-static struct devlink_param_item *
-devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
-{
- struct devlink_param_item *param_item;
-
- list_for_each_entry(param_item, param_list, list)
- if (param_item->param->id == param_id)
- return param_item;
- return NULL;
-}
-
-static bool
-devlink_param_cmode_is_supported(const struct devlink_param *param,
- enum devlink_param_cmode cmode)
-{
- return test_bit(cmode, ¶m->supported_cmodes);
-}
-
-static int devlink_param_get(struct devlink *devlink,
- const struct devlink_param *param,
- struct devlink_param_gset_ctx *ctx)
-{
- if (!param->get || devlink->reload_failed)
- return -EOPNOTSUPP;
- return param->get(devlink, param->id, ctx);
-}
-
-static int devlink_param_set(struct devlink *devlink,
- const struct devlink_param *param,
- struct devlink_param_gset_ctx *ctx)
-{
- if (!param->set || devlink->reload_failed)
- return -EOPNOTSUPP;
- return param->set(devlink, param->id, ctx);
-}
-
-static int
-devlink_param_type_to_nla_type(enum devlink_param_type param_type)
-{
- switch (param_type) {
- case DEVLINK_PARAM_TYPE_U8:
- return NLA_U8;
- case DEVLINK_PARAM_TYPE_U16:
- return NLA_U16;
- case DEVLINK_PARAM_TYPE_U32:
- return NLA_U32;
- case DEVLINK_PARAM_TYPE_STRING:
- return NLA_STRING;
- case DEVLINK_PARAM_TYPE_BOOL:
- return NLA_FLAG;
- default:
- return -EINVAL;
- }
-}
-
-static int
-devlink_nl_param_value_fill_one(struct sk_buff *msg,
- enum devlink_param_type type,
- enum devlink_param_cmode cmode,
- union devlink_param_value val)
-{
- struct nlattr *param_value_attr;
-
- param_value_attr = nla_nest_start_noflag(msg,
- DEVLINK_ATTR_PARAM_VALUE);
- if (!param_value_attr)
- goto nla_put_failure;
-
- if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
- goto value_nest_cancel;
-
- switch (type) {
- case DEVLINK_PARAM_TYPE_U8:
- if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
- goto value_nest_cancel;
- break;
- case DEVLINK_PARAM_TYPE_U16:
- if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
- goto value_nest_cancel;
- break;
- case DEVLINK_PARAM_TYPE_U32:
- if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
- goto value_nest_cancel;
- break;
- case DEVLINK_PARAM_TYPE_STRING:
- if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
- val.vstr))
- goto value_nest_cancel;
- break;
- case DEVLINK_PARAM_TYPE_BOOL:
- if (val.vbool &&
- nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
- goto value_nest_cancel;
- break;
- }
-
- nla_nest_end(msg, param_value_attr);
- return 0;
-
-value_nest_cancel:
- nla_nest_cancel(msg, param_value_attr);
-nla_put_failure:
- return -EMSGSIZE;
-}
-
-static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
- unsigned int port_index,
- struct devlink_param_item *param_item,
- enum devlink_command cmd,
- u32 portid, u32 seq, int flags)
-{
- union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
- bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
- const struct devlink_param *param = param_item->param;
- struct devlink_param_gset_ctx ctx;
- struct nlattr *param_values_list;
- struct nlattr *param_attr;
- int nla_type;
- void *hdr;
- int err;
- int i;
-
- /* Get value from driver part to driverinit configuration mode */
- for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
- if (!devlink_param_cmode_is_supported(param, i))
- continue;
- if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
- if (!param_item->driverinit_value_valid)
- return -EOPNOTSUPP;
- param_value[i] = param_item->driverinit_value;
- } else {
- ctx.cmode = i;
- err = devlink_param_get(devlink, param, &ctx);
- if (err)
- return err;
- param_value[i] = ctx.val;
- }
- param_value_set[i] = true;
- }
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto genlmsg_cancel;
-
- if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
- cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
- cmd == DEVLINK_CMD_PORT_PARAM_DEL)
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
- goto genlmsg_cancel;
-
- param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
- if (!param_attr)
- goto genlmsg_cancel;
- if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
- goto param_nest_cancel;
- if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
- goto param_nest_cancel;
-
- nla_type = devlink_param_type_to_nla_type(param->type);
- if (nla_type < 0)
- goto param_nest_cancel;
- if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
- goto param_nest_cancel;
-
- param_values_list = nla_nest_start_noflag(msg,
- DEVLINK_ATTR_PARAM_VALUES_LIST);
- if (!param_values_list)
- goto param_nest_cancel;
-
- for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
- if (!param_value_set[i])
- continue;
- err = devlink_nl_param_value_fill_one(msg, param->type,
- i, param_value[i]);
- if (err)
- goto values_list_nest_cancel;
- }
-
- nla_nest_end(msg, param_values_list);
- nla_nest_end(msg, param_attr);
- genlmsg_end(msg, hdr);
- return 0;
-
-values_list_nest_cancel:
- nla_nest_end(msg, param_values_list);
-param_nest_cancel:
- nla_nest_cancel(msg, param_attr);
-genlmsg_cancel:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void devlink_param_notify(struct devlink *devlink,
- unsigned int port_index,
- struct devlink_param_item *param_item,
- enum devlink_command cmd)
-{
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
- cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
- cmd != DEVLINK_CMD_PORT_PARAM_DEL);
- ASSERT_DEVLINK_REGISTERED(devlink);
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
- err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
- 0, 0, 0);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink_param_item *param_item;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(param_item, &devlink->param_list, list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_param_fill(msg, devlink, 0, param_item,
- DEVLINK_CMD_PARAM_GET,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
- if (err == -EOPNOTSUPP) {
- err = 0;
- } else if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int
-devlink_param_type_get_from_info(struct genl_info *info,
- enum devlink_param_type *param_type)
-{
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PARAM_TYPE))
- return -EINVAL;
-
- switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
- case NLA_U8:
- *param_type = DEVLINK_PARAM_TYPE_U8;
- break;
- case NLA_U16:
- *param_type = DEVLINK_PARAM_TYPE_U16;
- break;
- case NLA_U32:
- *param_type = DEVLINK_PARAM_TYPE_U32;
- break;
- case NLA_STRING:
- *param_type = DEVLINK_PARAM_TYPE_STRING;
- break;
- case NLA_FLAG:
- *param_type = DEVLINK_PARAM_TYPE_BOOL;
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int
-devlink_param_value_get_from_info(const struct devlink_param *param,
- struct genl_info *info,
- union devlink_param_value *value)
-{
- struct nlattr *param_data;
- int len;
-
- param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
-
- if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
- return -EINVAL;
-
- switch (param->type) {
- case DEVLINK_PARAM_TYPE_U8:
- if (nla_len(param_data) != sizeof(u8))
- return -EINVAL;
- value->vu8 = nla_get_u8(param_data);
- break;
- case DEVLINK_PARAM_TYPE_U16:
- if (nla_len(param_data) != sizeof(u16))
- return -EINVAL;
- value->vu16 = nla_get_u16(param_data);
- break;
- case DEVLINK_PARAM_TYPE_U32:
- if (nla_len(param_data) != sizeof(u32))
- return -EINVAL;
- value->vu32 = nla_get_u32(param_data);
- break;
- case DEVLINK_PARAM_TYPE_STRING:
- len = strnlen(nla_data(param_data), nla_len(param_data));
- if (len == nla_len(param_data) ||
- len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
- return -EINVAL;
- strcpy(value->vstr, nla_data(param_data));
- break;
- case DEVLINK_PARAM_TYPE_BOOL:
- if (param_data && nla_len(param_data))
- return -EINVAL;
- value->vbool = nla_get_flag(param_data);
- break;
- }
- return 0;
-}
-
-static struct devlink_param_item *
-devlink_param_get_from_info(struct list_head *param_list,
- struct genl_info *info)
-{
- char *param_name;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PARAM_NAME))
- return NULL;
-
- param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
- return devlink_param_find_by_name(param_list, param_name);
-}
-
-static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_param_item *param_item;
- struct sk_buff *msg;
- int err;
-
- param_item = devlink_param_get_from_info(&devlink->param_list, info);
- if (!param_item)
- return -EINVAL;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_param_fill(msg, devlink, 0, param_item,
- DEVLINK_CMD_PARAM_GET,
- info->snd_portid, info->snd_seq, 0);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
- unsigned int port_index,
- struct list_head *param_list,
- struct genl_info *info,
- enum devlink_command cmd)
-{
- enum devlink_param_type param_type;
- struct devlink_param_gset_ctx ctx;
- enum devlink_param_cmode cmode;
- struct devlink_param_item *param_item;
- const struct devlink_param *param;
- union devlink_param_value value;
- int err = 0;
-
- param_item = devlink_param_get_from_info(param_list, info);
- if (!param_item)
- return -EINVAL;
- param = param_item->param;
- err = devlink_param_type_get_from_info(info, ¶m_type);
- if (err)
- return err;
- if (param_type != param->type)
- return -EINVAL;
- err = devlink_param_value_get_from_info(param, info, &value);
- if (err)
- return err;
- if (param->validate) {
- err = param->validate(devlink, param->id, value, info->extack);
- if (err)
- return err;
- }
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PARAM_VALUE_CMODE))
- return -EINVAL;
- cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
- if (!devlink_param_cmode_is_supported(param, cmode))
- return -EOPNOTSUPP;
-
- if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
- if (param->type == DEVLINK_PARAM_TYPE_STRING)
- strcpy(param_item->driverinit_value.vstr, value.vstr);
- else
- param_item->driverinit_value = value;
- param_item->driverinit_value_valid = true;
- } else {
- if (!param->set)
- return -EOPNOTSUPP;
- ctx.val = value;
- ctx.cmode = cmode;
- err = devlink_param_set(devlink, param, &ctx);
- if (err)
- return err;
- }
-
- devlink_param_notify(devlink, port_index, param_item, cmd);
- return 0;
-}
-
-static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
-
- return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
- info, DEVLINK_CMD_PARAM_NEW);
-}
-
-static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- NL_SET_ERR_MSG_MOD(cb->extack, "Port params are not supported");
- return msg->len;
-}
-
-static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- NL_SET_ERR_MSG_MOD(info->extack, "Port params are not supported");
- return -EINVAL;
-}
-
-static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- NL_SET_ERR_MSG_MOD(info->extack, "Port params are not supported");
- return -EINVAL;
-}
-
-static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
- struct devlink *devlink,
- struct devlink_snapshot *snapshot)
-{
- struct nlattr *snap_attr;
- int err;
-
- snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
- if (!snap_attr)
- return -EINVAL;
-
- err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
- if (err)
- goto nla_put_failure;
-
- nla_nest_end(msg, snap_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, snap_attr);
- return err;
-}
-
-static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
- struct devlink *devlink,
- struct devlink_region *region)
-{
- struct devlink_snapshot *snapshot;
- struct nlattr *snapshots_attr;
- int err;
-
- snapshots_attr = nla_nest_start_noflag(msg,
- DEVLINK_ATTR_REGION_SNAPSHOTS);
- if (!snapshots_attr)
- return -EINVAL;
-
- list_for_each_entry(snapshot, ®ion->snapshot_list, list) {
- err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
- if (err)
- goto nla_put_failure;
- }
-
- nla_nest_end(msg, snapshots_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, snapshots_attr);
- return err;
-}
-
-static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags,
- struct devlink_region *region)
-{
- void *hdr;
- int err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- err = devlink_nl_put_handle(msg, devlink);
- if (err)
- goto nla_put_failure;
-
- if (region->port) {
- err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
- region->port->index);
- if (err)
- goto nla_put_failure;
- }
-
- err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
- if (err)
- goto nla_put_failure;
-
- err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
- region->size,
- DEVLINK_ATTR_PAD);
- if (err)
- goto nla_put_failure;
-
- err = nla_put_u32(msg, DEVLINK_ATTR_REGION_MAX_SNAPSHOTS,
- region->max_snapshots);
- if (err)
- goto nla_put_failure;
-
- err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
- if (err)
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return err;
-}
-
-static struct sk_buff *
-devlink_nl_region_notify_build(struct devlink_region *region,
- struct devlink_snapshot *snapshot,
- enum devlink_command cmd, u32 portid, u32 seq)
-{
- struct devlink *devlink = region->devlink;
- struct sk_buff *msg;
- void *hdr;
- int err;
-
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return ERR_PTR(-ENOMEM);
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
- if (!hdr) {
- err = -EMSGSIZE;
- goto out_free_msg;
- }
-
- err = devlink_nl_put_handle(msg, devlink);
- if (err)
- goto out_cancel_msg;
-
- if (region->port) {
- err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
- region->port->index);
- if (err)
- goto out_cancel_msg;
- }
-
- err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
- region->ops->name);
- if (err)
- goto out_cancel_msg;
-
- if (snapshot) {
- err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
- snapshot->id);
- if (err)
- goto out_cancel_msg;
- } else {
- err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
- region->size, DEVLINK_ATTR_PAD);
- if (err)
- goto out_cancel_msg;
- }
- genlmsg_end(msg, hdr);
-
- return msg;
-
-out_cancel_msg:
- genlmsg_cancel(msg, hdr);
-out_free_msg:
- nlmsg_free(msg);
- return ERR_PTR(err);
-}
-
-static void devlink_nl_region_notify(struct devlink_region *region,
- struct devlink_snapshot *snapshot,
- enum devlink_command cmd)
-{
- struct devlink *devlink = region->devlink;
- struct sk_buff *msg;
-
- WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
- if (IS_ERR(msg))
- return;
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
- 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-/**
- * __devlink_snapshot_id_increment - Increment number of snapshots using an id
- * @devlink: devlink instance
- * @id: the snapshot id
- *
- * Track when a new snapshot begins using an id. Load the count for the
- * given id from the snapshot xarray, increment it, and store it back.
- *
- * Called when a new snapshot is created with the given id.
- *
- * The id *must* have been previously allocated by
- * devlink_region_snapshot_id_get().
- *
- * Returns 0 on success, or an error on failure.
- */
-static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
-{
- unsigned long count;
- void *p;
- int err;
-
- xa_lock(&devlink->snapshot_ids);
- p = xa_load(&devlink->snapshot_ids, id);
- if (WARN_ON(!p)) {
- err = -EINVAL;
- goto unlock;
- }
-
- if (WARN_ON(!xa_is_value(p))) {
- err = -EINVAL;
- goto unlock;
- }
-
- count = xa_to_value(p);
- count++;
-
- err = xa_err(__xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
- GFP_ATOMIC));
-unlock:
- xa_unlock(&devlink->snapshot_ids);
- return err;
-}
-
-/**
- * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
- * @devlink: devlink instance
- * @id: the snapshot id
- *
- * Track when a snapshot is deleted and stops using an id. Load the count
- * for the given id from the snapshot xarray, decrement it, and store it
- * back.
- *
- * If the count reaches zero, erase this id from the xarray, freeing it
- * up for future re-use by devlink_region_snapshot_id_get().
- *
- * Called when a snapshot using the given id is deleted, and when the
- * initial allocator of the id is finished using it.
- */
-static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
-{
- unsigned long count;
- void *p;
-
- xa_lock(&devlink->snapshot_ids);
- p = xa_load(&devlink->snapshot_ids, id);
- if (WARN_ON(!p))
- goto unlock;
-
- if (WARN_ON(!xa_is_value(p)))
- goto unlock;
-
- count = xa_to_value(p);
-
- if (count > 1) {
- count--;
- __xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
- GFP_ATOMIC);
- } else {
- /* If this was the last user, we can erase this id */
- __xa_erase(&devlink->snapshot_ids, id);
- }
-unlock:
- xa_unlock(&devlink->snapshot_ids);
-}
-
-/**
- * __devlink_snapshot_id_insert - Insert a specific snapshot ID
- * @devlink: devlink instance
- * @id: the snapshot id
- *
- * Mark the given snapshot id as used by inserting a zero value into the
- * snapshot xarray.
- *
- * This must be called while holding the devlink instance lock. Unlike
- * devlink_snapshot_id_get, the initial reference count is zero, not one.
- * It is expected that the id will immediately be used before
- * releasing the devlink instance lock.
- *
- * Returns zero on success, or an error code if the snapshot id could not
- * be inserted.
- */
-static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
-{
- int err;
-
- xa_lock(&devlink->snapshot_ids);
- if (xa_load(&devlink->snapshot_ids, id)) {
- xa_unlock(&devlink->snapshot_ids);
- return -EEXIST;
- }
- err = xa_err(__xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
- GFP_ATOMIC));
- xa_unlock(&devlink->snapshot_ids);
- return err;
-}
-
-/**
- * __devlink_region_snapshot_id_get - get snapshot ID
- * @devlink: devlink instance
- * @id: storage to return snapshot id
- *
- * Allocates a new snapshot id. Returns zero on success, or a negative
- * error on failure. Must be called while holding the devlink instance
- * lock.
- *
- * Snapshot IDs are tracked using an xarray which stores the number of
- * users of the snapshot id.
- *
- * Note that the caller of this function counts as a 'user', in order to
- * avoid race conditions. The caller must release its hold on the
- * snapshot by using devlink_region_snapshot_id_put.
- */
-static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
-{
- return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
- xa_limit_32b, GFP_KERNEL);
-}
-
-/**
- * __devlink_region_snapshot_create - create a new snapshot
- * This will add a new snapshot of a region. The snapshot
- * will be stored on the region struct and can be accessed
- * from devlink. This is useful for future analyses of snapshots.
- * Multiple snapshots can be created on a region.
- * The @snapshot_id should be obtained using the getter function.
- *
- * Must be called only while holding the region snapshot lock.
- *
- * @region: devlink region of the snapshot
- * @data: snapshot data
- * @snapshot_id: snapshot id to be created
- */
-static int
-__devlink_region_snapshot_create(struct devlink_region *region,
- u8 *data, u32 snapshot_id)
-{
- struct devlink *devlink = region->devlink;
- struct devlink_snapshot *snapshot;
- int err;
-
- lockdep_assert_held(®ion->snapshot_lock);
-
- /* check if region can hold one more snapshot */
- if (region->cur_snapshots == region->max_snapshots)
- return -ENOSPC;
-
- if (devlink_region_snapshot_get_by_id(region, snapshot_id))
- return -EEXIST;
-
- snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
- if (!snapshot)
- return -ENOMEM;
-
- err = __devlink_snapshot_id_increment(devlink, snapshot_id);
- if (err)
- goto err_snapshot_id_increment;
-
- snapshot->id = snapshot_id;
- snapshot->region = region;
- snapshot->data = data;
-
- list_add_tail(&snapshot->list, ®ion->snapshot_list);
-
- region->cur_snapshots++;
-
- devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
- return 0;
-
-err_snapshot_id_increment:
- kfree(snapshot);
- return err;
-}
-
-static void devlink_region_snapshot_del(struct devlink_region *region,
- struct devlink_snapshot *snapshot)
-{
- struct devlink *devlink = region->devlink;
-
- lockdep_assert_held(®ion->snapshot_lock);
-
- devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
- region->cur_snapshots--;
- list_del(&snapshot->list);
- region->ops->destructor(snapshot->data);
- __devlink_snapshot_id_decrement(devlink, snapshot->id);
- kfree(snapshot);
-}
-
-static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_port *port = NULL;
- struct devlink_region *region;
- const char *region_name;
- struct sk_buff *msg;
- unsigned int index;
- int err;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME))
- return -EINVAL;
-
- if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
- index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
-
- port = devlink_port_get_by_index(devlink, index);
- if (!port)
- return -ENODEV;
- }
-
- region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
- if (port)
- region = devlink_port_region_get_by_name(port, region_name);
- else
- region = devlink_region_get_by_name(devlink, region_name);
-
- if (!region)
- return -EINVAL;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
- info->snd_portid, info->snd_seq, 0,
- region);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb,
- struct devlink_port *port,
- int *idx,
- int start)
-{
- struct devlink_region *region;
- int err = 0;
-
- list_for_each_entry(region, &port->region_list, list) {
- if (*idx < start) {
- (*idx)++;
- continue;
- }
- err = devlink_nl_region_fill(msg, port->devlink,
- DEVLINK_CMD_REGION_GET,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI, region);
- if (err)
- goto out;
- (*idx)++;
- }
-
-out:
- return err;
-}
-
-static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb,
- struct devlink *devlink,
- int *idx,
- int start)
-{
- struct devlink_region *region;
- struct devlink_port *port;
- unsigned long port_index;
- int err = 0;
-
- devl_lock(devlink);
- list_for_each_entry(region, &devlink->region_list, list) {
- if (*idx < start) {
- (*idx)++;
- continue;
- }
- err = devlink_nl_region_fill(msg, devlink,
- DEVLINK_CMD_REGION_GET,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI, region);
- if (err)
- goto out;
- (*idx)++;
- }
-
- xa_for_each(&devlink->ports, port_index, port) {
- err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
- start);
- if (err)
- goto out;
- }
-
-out:
- devl_unlock(devlink);
- return err;
-}
-
-static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
- &idx, start);
- devlink_put(devlink);
- if (err)
- goto out;
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_nl_cmd_region_del(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_snapshot *snapshot;
- struct devlink_port *port = NULL;
- struct devlink_region *region;
- const char *region_name;
- unsigned int index;
- u32 snapshot_id;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME) ||
- GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_SNAPSHOT_ID))
- return -EINVAL;
-
- region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
- snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
-
- if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
- index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
-
- port = devlink_port_get_by_index(devlink, index);
- if (!port)
- return -ENODEV;
- }
-
- if (port)
- region = devlink_port_region_get_by_name(port, region_name);
- else
- region = devlink_region_get_by_name(devlink, region_name);
-
- if (!region)
- return -EINVAL;
-
- mutex_lock(®ion->snapshot_lock);
- snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
- if (!snapshot) {
- mutex_unlock(®ion->snapshot_lock);
- return -EINVAL;
- }
-
- devlink_region_snapshot_del(region, snapshot);
- mutex_unlock(®ion->snapshot_lock);
- return 0;
-}
-
-static int
-devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_snapshot *snapshot;
- struct devlink_port *port = NULL;
- struct nlattr *snapshot_id_attr;
- struct devlink_region *region;
- const char *region_name;
- unsigned int index;
- u32 snapshot_id;
- u8 *data;
- int err;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME)) {
- NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
- return -EINVAL;
- }
-
- region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
-
- if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
- index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
-
- port = devlink_port_get_by_index(devlink, index);
- if (!port)
- return -ENODEV;
- }
-
- if (port)
- region = devlink_port_region_get_by_name(port, region_name);
- else
- region = devlink_region_get_by_name(devlink, region_name);
-
- if (!region) {
- NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
- return -EINVAL;
- }
-
- if (!region->ops->snapshot) {
- NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
- return -EOPNOTSUPP;
- }
-
- mutex_lock(®ion->snapshot_lock);
-
- if (region->cur_snapshots == region->max_snapshots) {
- NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
- err = -ENOSPC;
- goto unlock;
- }
-
- snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
- if (snapshot_id_attr) {
- snapshot_id = nla_get_u32(snapshot_id_attr);
-
- if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
- NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
- err = -EEXIST;
- goto unlock;
- }
-
- err = __devlink_snapshot_id_insert(devlink, snapshot_id);
- if (err)
- goto unlock;
- } else {
- err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
- if (err) {
- NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
- goto unlock;
- }
- }
-
- if (port)
- err = region->port_ops->snapshot(port, region->port_ops,
- info->extack, &data);
- else
- err = region->ops->snapshot(devlink, region->ops,
- info->extack, &data);
- if (err)
- goto err_snapshot_capture;
-
- err = __devlink_region_snapshot_create(region, data, snapshot_id);
- if (err)
- goto err_snapshot_create;
-
- if (!snapshot_id_attr) {
- struct sk_buff *msg;
-
- snapshot = devlink_region_snapshot_get_by_id(region,
- snapshot_id);
- if (WARN_ON(!snapshot)) {
- err = -EINVAL;
- goto unlock;
- }
-
- msg = devlink_nl_region_notify_build(region, snapshot,
- DEVLINK_CMD_REGION_NEW,
- info->snd_portid,
- info->snd_seq);
- err = PTR_ERR_OR_ZERO(msg);
- if (err)
- goto err_notify;
-
- err = genlmsg_reply(msg, info);
- if (err)
- goto err_notify;
- }
-
- mutex_unlock(®ion->snapshot_lock);
- return 0;
-
-err_snapshot_create:
- region->ops->destructor(data);
-err_snapshot_capture:
- __devlink_snapshot_id_decrement(devlink, snapshot_id);
- mutex_unlock(®ion->snapshot_lock);
- return err;
-
-err_notify:
- devlink_region_snapshot_del(region, snapshot);
-unlock:
- mutex_unlock(®ion->snapshot_lock);
- return err;
-}
-
-static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
- u8 *chunk, u32 chunk_size,
- u64 addr)
-{
- struct nlattr *chunk_attr;
- int err;
-
- chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
- if (!chunk_attr)
- return -EINVAL;
-
- err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
- if (err)
- goto nla_put_failure;
-
- err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
- DEVLINK_ATTR_PAD);
- if (err)
- goto nla_put_failure;
-
- nla_nest_end(msg, chunk_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, chunk_attr);
- return err;
-}
-
-#define DEVLINK_REGION_READ_CHUNK_SIZE 256
-
-typedef int devlink_chunk_fill_t(void *cb_priv, u8 *chunk, u32 chunk_size,
- u64 curr_offset,
- struct netlink_ext_ack *extack);
-
-static int
-devlink_nl_region_read_fill(struct sk_buff *skb, devlink_chunk_fill_t *cb,
- void *cb_priv, u64 start_offset, u64 end_offset,
- u64 *new_offset, struct netlink_ext_ack *extack)
-{
- u64 curr_offset = start_offset;
- int err = 0;
- u8 *data;
-
- /* Allocate and re-use a single buffer */
- data = kmalloc(DEVLINK_REGION_READ_CHUNK_SIZE, GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- *new_offset = start_offset;
-
- while (curr_offset < end_offset) {
- u32 data_size;
-
- data_size = min_t(u32, end_offset - curr_offset,
- DEVLINK_REGION_READ_CHUNK_SIZE);
-
- err = cb(cb_priv, data, data_size, curr_offset, extack);
- if (err)
- break;
-
- err = devlink_nl_cmd_region_read_chunk_fill(skb, data, data_size, curr_offset);
- if (err)
- break;
-
- curr_offset += data_size;
- }
- *new_offset = curr_offset;
-
- kfree(data);
-
- return err;
-}
-
-static int
-devlink_region_snapshot_fill(void *cb_priv, u8 *chunk, u32 chunk_size,
- u64 curr_offset,
- struct netlink_ext_ack __always_unused *extack)
-{
- struct devlink_snapshot *snapshot = cb_priv;
-
- memcpy(chunk, &snapshot->data[curr_offset], chunk_size);
-
- return 0;
-}
-
-static int
-devlink_region_port_direct_fill(void *cb_priv, u8 *chunk, u32 chunk_size,
- u64 curr_offset, struct netlink_ext_ack *extack)
-{
- struct devlink_region *region = cb_priv;
-
- return region->port_ops->read(region->port, region->port_ops, extack,
- curr_offset, chunk_size, chunk);
-}
-
-static int
-devlink_region_direct_fill(void *cb_priv, u8 *chunk, u32 chunk_size,
- u64 curr_offset, struct netlink_ext_ack *extack)
-{
- struct devlink_region *region = cb_priv;
-
- return region->ops->read(region->devlink, region->ops, extack,
- curr_offset, chunk_size, chunk);
-}
-
-static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
- struct netlink_callback *cb)
-{
- const struct genl_dumpit_info *info = genl_dumpit_info(cb);
- struct nlattr *chunks_attr, *region_attr, *snapshot_attr;
- u64 ret_offset, start_offset, end_offset = U64_MAX;
- struct nlattr **attrs = info->attrs;
- struct devlink_port *port = NULL;
- devlink_chunk_fill_t *region_cb;
- struct devlink_region *region;
- const char *region_name;
- struct devlink *devlink;
- unsigned int index;
- void *region_cb_priv;
- void *hdr;
- int err;
-
- start_offset = *((u64 *)&cb->args[0]);
-
- devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
- if (IS_ERR(devlink))
- return PTR_ERR(devlink);
-
- devl_lock(devlink);
-
- if (!attrs[DEVLINK_ATTR_REGION_NAME]) {
- NL_SET_ERR_MSG(cb->extack, "No region name provided");
- err = -EINVAL;
- goto out_unlock;
- }
-
- if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
- index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
-
- port = devlink_port_get_by_index(devlink, index);
- if (!port) {
- err = -ENODEV;
- goto out_unlock;
- }
- }
-
- region_attr = attrs[DEVLINK_ATTR_REGION_NAME];
- region_name = nla_data(region_attr);
-
- if (port)
- region = devlink_port_region_get_by_name(port, region_name);
- else
- region = devlink_region_get_by_name(devlink, region_name);
-
- if (!region) {
- NL_SET_ERR_MSG_ATTR(cb->extack, region_attr, "Requested region does not exist");
- err = -EINVAL;
- goto out_unlock;
- }
-
- snapshot_attr = attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
- if (!snapshot_attr) {
- if (!nla_get_flag(attrs[DEVLINK_ATTR_REGION_DIRECT])) {
- NL_SET_ERR_MSG(cb->extack, "No snapshot id provided");
- err = -EINVAL;
- goto out_unlock;
- }
-
- if (!region->ops->read) {
- NL_SET_ERR_MSG(cb->extack, "Requested region does not support direct read");
- err = -EOPNOTSUPP;
- goto out_unlock;
- }
-
- if (port)
- region_cb = &devlink_region_port_direct_fill;
- else
- region_cb = &devlink_region_direct_fill;
- region_cb_priv = region;
- } else {
- struct devlink_snapshot *snapshot;
- u32 snapshot_id;
-
- if (nla_get_flag(attrs[DEVLINK_ATTR_REGION_DIRECT])) {
- NL_SET_ERR_MSG_ATTR(cb->extack, snapshot_attr, "Direct region read does not use snapshot");
- err = -EINVAL;
- goto out_unlock;
- }
-
- snapshot_id = nla_get_u32(snapshot_attr);
- snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
- if (!snapshot) {
- NL_SET_ERR_MSG_ATTR(cb->extack, snapshot_attr, "Requested snapshot does not exist");
- err = -EINVAL;
- goto out_unlock;
- }
- region_cb = &devlink_region_snapshot_fill;
- region_cb_priv = snapshot;
- }
-
- if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
- attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
- if (!start_offset)
- start_offset =
- nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
-
- end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
- end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
- }
-
- if (end_offset > region->size)
- end_offset = region->size;
-
- /* return 0 if there is no further data to read */
- if (start_offset == end_offset) {
- err = 0;
- goto out_unlock;
- }
-
- hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
- &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
- DEVLINK_CMD_REGION_READ);
- if (!hdr) {
- err = -EMSGSIZE;
- goto out_unlock;
- }
-
- err = devlink_nl_put_handle(skb, devlink);
- if (err)
- goto nla_put_failure;
-
- if (region->port) {
- err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
- region->port->index);
- if (err)
- goto nla_put_failure;
- }
-
- err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
- if (err)
- goto nla_put_failure;
-
- chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
- if (!chunks_attr) {
- err = -EMSGSIZE;
- goto nla_put_failure;
- }
-
- err = devlink_nl_region_read_fill(skb, region_cb, region_cb_priv,
- start_offset, end_offset, &ret_offset,
- cb->extack);
-
- if (err && err != -EMSGSIZE)
- goto nla_put_failure;
-
- /* Check if there was any progress done to prevent infinite loop */
- if (ret_offset == start_offset) {
- err = -EINVAL;
- goto nla_put_failure;
- }
-
- *((u64 *)&cb->args[0]) = ret_offset;
-
- nla_nest_end(skb, chunks_attr);
- genlmsg_end(skb, hdr);
- devl_unlock(devlink);
- devlink_put(devlink);
- return skb->len;
-
-nla_put_failure:
- genlmsg_cancel(skb, hdr);
-out_unlock:
- devl_unlock(devlink);
- devlink_put(devlink);
- return err;
-}
-
-int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
-{
- if (!req->msg)
- return 0;
- return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
-}
-EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
-
-int devlink_info_board_serial_number_put(struct devlink_info_req *req,
- const char *bsn)
-{
- if (!req->msg)
- return 0;
- return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
- bsn);
-}
-EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
-
-static int devlink_info_version_put(struct devlink_info_req *req, int attr,
- const char *version_name,
- const char *version_value,
- enum devlink_info_version_type version_type)
-{
- struct nlattr *nest;
- int err;
-
- if (req->version_cb)
- req->version_cb(version_name, version_type,
- req->version_cb_priv);
-
- if (!req->msg)
- return 0;
-
- nest = nla_nest_start_noflag(req->msg, attr);
- if (!nest)
- return -EMSGSIZE;
-
- err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
- version_name);
- if (err)
- goto nla_put_failure;
-
- err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
- version_value);
- if (err)
- goto nla_put_failure;
-
- nla_nest_end(req->msg, nest);
-
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(req->msg, nest);
- return err;
-}
-
-int devlink_info_version_fixed_put(struct devlink_info_req *req,
- const char *version_name,
- const char *version_value)
-{
- return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
- version_name, version_value,
- DEVLINK_INFO_VERSION_TYPE_NONE);
-}
-EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
-
-int devlink_info_version_stored_put(struct devlink_info_req *req,
- const char *version_name,
- const char *version_value)
-{
- return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
- version_name, version_value,
- DEVLINK_INFO_VERSION_TYPE_NONE);
-}
-EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
-
-int devlink_info_version_stored_put_ext(struct devlink_info_req *req,
- const char *version_name,
- const char *version_value,
- enum devlink_info_version_type version_type)
-{
- return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
- version_name, version_value,
- version_type);
-}
-EXPORT_SYMBOL_GPL(devlink_info_version_stored_put_ext);
-
-int devlink_info_version_running_put(struct devlink_info_req *req,
- const char *version_name,
- const char *version_value)
-{
- return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
- version_name, version_value,
- DEVLINK_INFO_VERSION_TYPE_NONE);
-}
-EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
-
-int devlink_info_version_running_put_ext(struct devlink_info_req *req,
- const char *version_name,
- const char *version_value,
- enum devlink_info_version_type version_type)
-{
- return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
- version_name, version_value,
- version_type);
-}
-EXPORT_SYMBOL_GPL(devlink_info_version_running_put_ext);
-
-static int devlink_nl_driver_info_get(struct device_driver *drv,
- struct devlink_info_req *req)
-{
- if (!drv)
- return 0;
-
- if (drv->name[0])
- return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME,
- drv->name);
-
- return 0;
-}
-
-static int
-devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags, struct netlink_ext_ack *extack)
-{
- struct device *dev = devlink_to_dev(devlink);
- struct devlink_info_req req = {};
- void *hdr;
- int err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- err = -EMSGSIZE;
- if (devlink_nl_put_handle(msg, devlink))
- goto err_cancel_msg;
-
- req.msg = msg;
- if (devlink->ops->info_get) {
- err = devlink->ops->info_get(devlink, &req, extack);
- if (err)
- goto err_cancel_msg;
- }
-
- err = devlink_nl_driver_info_get(dev->driver, &req);
- if (err)
- goto err_cancel_msg;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-err_cancel_msg:
- genlmsg_cancel(msg, hdr);
- return err;
-}
-
-static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
- info->snd_portid, info->snd_seq, 0,
- info->extack);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (idx < start)
- goto inc;
-
- devl_lock(devlink);
- err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq, NLM_F_MULTI,
- cb->extack);
- devl_unlock(devlink);
- if (err == -EOPNOTSUPP)
- err = 0;
- else if (err) {
- devlink_put(devlink);
- break;
- }
-inc:
- idx++;
- devlink_put(devlink);
- }
-
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-struct devlink_fmsg_item {
- struct list_head list;
- int attrtype;
- u8 nla_type;
- u16 len;
- int value[];
-};
-
-struct devlink_fmsg {
- struct list_head item_list;
- bool putting_binary; /* This flag forces enclosing of binary data
- * in an array brackets. It forces using
- * of designated API:
- * devlink_fmsg_binary_pair_nest_start()
- * devlink_fmsg_binary_pair_nest_end()
- */
-};
-
-static struct devlink_fmsg *devlink_fmsg_alloc(void)
-{
- struct devlink_fmsg *fmsg;
-
- fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
- if (!fmsg)
- return NULL;
-
- INIT_LIST_HEAD(&fmsg->item_list);
-
- return fmsg;
-}
-
-static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
-{
- struct devlink_fmsg_item *item, *tmp;
-
- list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
- list_del(&item->list);
- kfree(item);
- }
- kfree(fmsg);
-}
-
-static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
- int attrtype)
-{
- struct devlink_fmsg_item *item;
-
- item = kzalloc(sizeof(*item), GFP_KERNEL);
- if (!item)
- return -ENOMEM;
-
- item->attrtype = attrtype;
- list_add_tail(&item->list, &fmsg->item_list);
-
- return 0;
-}
-
-int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
-
-static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
-}
-
-int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_nest_end(fmsg);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
-
-#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
-
-static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
-{
- struct devlink_fmsg_item *item;
-
- if (fmsg->putting_binary)
- return -EINVAL;
-
- if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
- return -EMSGSIZE;
-
- item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
- if (!item)
- return -ENOMEM;
-
- item->nla_type = NLA_NUL_STRING;
- item->len = strlen(name) + 1;
- item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
- memcpy(&item->value, name, item->len);
- list_add_tail(&item->list, &fmsg->item_list);
-
- return 0;
-}
-
-int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
-{
- int err;
-
- if (fmsg->putting_binary)
- return -EINVAL;
-
- err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
- if (err)
- return err;
-
- err = devlink_fmsg_put_name(fmsg, name);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
-
-int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_nest_end(fmsg);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
-
-int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
- const char *name)
-{
- int err;
-
- if (fmsg->putting_binary)
- return -EINVAL;
-
- err = devlink_fmsg_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
-
-int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
-{
- int err;
-
- if (fmsg->putting_binary)
- return -EINVAL;
-
- err = devlink_fmsg_nest_end(fmsg);
- if (err)
- return err;
-
- err = devlink_fmsg_nest_end(fmsg);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
-
-int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
- const char *name)
-{
- int err;
-
- err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- fmsg->putting_binary = true;
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
-
-int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
-{
- if (!fmsg->putting_binary)
- return -EINVAL;
-
- fmsg->putting_binary = false;
- return devlink_fmsg_arr_pair_nest_end(fmsg);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
-
-static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
- const void *value, u16 value_len,
- u8 value_nla_type)
-{
- struct devlink_fmsg_item *item;
-
- if (value_len > DEVLINK_FMSG_MAX_SIZE)
- return -EMSGSIZE;
-
- item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
- if (!item)
- return -ENOMEM;
-
- item->nla_type = value_nla_type;
- item->len = value_len;
- item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
- memcpy(&item->value, value, item->len);
- list_add_tail(&item->list, &fmsg->item_list);
-
- return 0;
-}
-
-static int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
-}
-
-static int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
-}
-
-int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
-
-static int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
-}
-
-int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
- NLA_NUL_STRING);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
-
-int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
- u16 value_len)
-{
- if (!fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
-
-int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
- bool value)
-{
- int err;
-
- err = devlink_fmsg_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- err = devlink_fmsg_bool_put(fmsg, value);
- if (err)
- return err;
-
- err = devlink_fmsg_pair_nest_end(fmsg);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
-
-int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
- u8 value)
-{
- int err;
-
- err = devlink_fmsg_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- err = devlink_fmsg_u8_put(fmsg, value);
- if (err)
- return err;
-
- err = devlink_fmsg_pair_nest_end(fmsg);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
-
-int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
- u32 value)
-{
- int err;
-
- err = devlink_fmsg_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- err = devlink_fmsg_u32_put(fmsg, value);
- if (err)
- return err;
-
- err = devlink_fmsg_pair_nest_end(fmsg);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
-
-int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
- u64 value)
-{
- int err;
-
- err = devlink_fmsg_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- err = devlink_fmsg_u64_put(fmsg, value);
- if (err)
- return err;
-
- err = devlink_fmsg_pair_nest_end(fmsg);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
-
-int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
- const char *value)
-{
- int err;
-
- err = devlink_fmsg_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- err = devlink_fmsg_string_put(fmsg, value);
- if (err)
- return err;
-
- err = devlink_fmsg_pair_nest_end(fmsg);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
-
-int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
- const void *value, u32 value_len)
-{
- u32 data_size;
- int end_err;
- u32 offset;
- int err;
-
- err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- for (offset = 0; offset < value_len; offset += data_size) {
- data_size = value_len - offset;
- if (data_size > DEVLINK_FMSG_MAX_SIZE)
- data_size = DEVLINK_FMSG_MAX_SIZE;
- err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
- if (err)
- break;
- /* Exit from loop with a break (instead of
- * return) to make sure putting_binary is turned off in
- * devlink_fmsg_binary_pair_nest_end
- */
- }
-
- end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
- if (end_err)
- err = end_err;
-
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
-
-static int
-devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
-{
- switch (msg->nla_type) {
- case NLA_FLAG:
- case NLA_U8:
- case NLA_U32:
- case NLA_U64:
- case NLA_NUL_STRING:
- case NLA_BINARY:
- return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
- msg->nla_type);
- default:
- return -EINVAL;
- }
-}
-
-static int
-devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
-{
- int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
- u8 tmp;
-
- switch (msg->nla_type) {
- case NLA_FLAG:
- /* Always provide flag data, regardless of its value */
- tmp = *(bool *) msg->value;
-
- return nla_put_u8(skb, attrtype, tmp);
- case NLA_U8:
- return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
- case NLA_U32:
- return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
- case NLA_U64:
- return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
- DEVLINK_ATTR_PAD);
- case NLA_NUL_STRING:
- return nla_put_string(skb, attrtype, (char *) &msg->value);
- case NLA_BINARY:
- return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
- default:
- return -EINVAL;
- }
-}
-
-static int
-devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
- int *start)
-{
- struct devlink_fmsg_item *item;
- struct nlattr *fmsg_nlattr;
- int i = 0;
- int err;
-
- fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
- if (!fmsg_nlattr)
- return -EMSGSIZE;
-
- list_for_each_entry(item, &fmsg->item_list, list) {
- if (i < *start) {
- i++;
- continue;
- }
-
- switch (item->attrtype) {
- case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
- case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
- case DEVLINK_ATTR_FMSG_ARR_NEST_START:
- case DEVLINK_ATTR_FMSG_NEST_END:
- err = nla_put_flag(skb, item->attrtype);
- break;
- case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
- err = devlink_fmsg_item_fill_type(item, skb);
- if (err)
- break;
- err = devlink_fmsg_item_fill_data(item, skb);
- break;
- case DEVLINK_ATTR_FMSG_OBJ_NAME:
- err = nla_put_string(skb, item->attrtype,
- (char *) &item->value);
- break;
- default:
- err = -EINVAL;
- break;
- }
- if (!err)
- *start = ++i;
- else
- break;
- }
-
- nla_nest_end(skb, fmsg_nlattr);
- return err;
-}
-
-static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
- struct genl_info *info,
- enum devlink_command cmd, int flags)
-{
- struct nlmsghdr *nlh;
- struct sk_buff *skb;
- bool last = false;
- int index = 0;
- void *hdr;
- int err;
-
- while (!last) {
- int tmp_index = index;
-
- skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!skb)
- return -ENOMEM;
-
- hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
- &devlink_nl_family, flags | NLM_F_MULTI, cmd);
- if (!hdr) {
- err = -EMSGSIZE;
- goto nla_put_failure;
- }
-
- err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
- if (!err)
- last = true;
- else if (err != -EMSGSIZE || tmp_index == index)
- goto nla_put_failure;
-
- genlmsg_end(skb, hdr);
- err = genlmsg_reply(skb, info);
- if (err)
- return err;
- }
-
- skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!skb)
- return -ENOMEM;
- nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
- NLMSG_DONE, 0, flags | NLM_F_MULTI);
- if (!nlh) {
- err = -EMSGSIZE;
- goto nla_put_failure;
- }
-
- return genlmsg_reply(skb, info);
-
-nla_put_failure:
- nlmsg_free(skb);
- return err;
-}
-
-static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
- struct netlink_callback *cb,
- enum devlink_command cmd)
-{
- int index = cb->args[0];
- int tmp_index = index;
- void *hdr;
- int err;
-
- hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
- &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
- if (!hdr) {
- err = -EMSGSIZE;
- goto nla_put_failure;
- }
-
- err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
- if ((err && err != -EMSGSIZE) || tmp_index == index)
- goto nla_put_failure;
-
- cb->args[0] = index;
- genlmsg_end(skb, hdr);
- return skb->len;
-
-nla_put_failure:
- genlmsg_cancel(skb, hdr);
- return err;
-}
-
-struct devlink_health_reporter {
- struct list_head list;
- void *priv;
- const struct devlink_health_reporter_ops *ops;
- struct devlink *devlink;
- struct devlink_port *devlink_port;
- struct devlink_fmsg *dump_fmsg;
- struct mutex dump_lock; /* lock parallel read/write from dump buffers */
- u64 graceful_period;
- bool auto_recover;
- bool auto_dump;
- u8 health_state;
- u64 dump_ts;
- u64 dump_real_ts;
- u64 error_count;
- u64 recovery_count;
- u64 last_recovery_ts;
- refcount_t refcount;
-};
-
-void *
-devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
-{
- return reporter->priv;
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
-
-static struct devlink_health_reporter *
-__devlink_health_reporter_find_by_name(struct list_head *reporter_list,
- struct mutex *list_lock,
- const char *reporter_name)
-{
- struct devlink_health_reporter *reporter;
-
- lockdep_assert_held(list_lock);
- list_for_each_entry(reporter, reporter_list, list)
- if (!strcmp(reporter->ops->name, reporter_name))
- return reporter;
- return NULL;
-}
-
-static struct devlink_health_reporter *
-devlink_health_reporter_find_by_name(struct devlink *devlink,
- const char *reporter_name)
-{
- return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
- &devlink->reporters_lock,
- reporter_name);
-}
-
-static struct devlink_health_reporter *
-devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
- const char *reporter_name)
-{
- return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
- &devlink_port->reporters_lock,
- reporter_name);
-}
-
-static struct devlink_health_reporter *
-__devlink_health_reporter_create(struct devlink *devlink,
- const struct devlink_health_reporter_ops *ops,
- u64 graceful_period, void *priv)
-{
- struct devlink_health_reporter *reporter;
-
- if (WARN_ON(graceful_period && !ops->recover))
- return ERR_PTR(-EINVAL);
-
- reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
- if (!reporter)
- return ERR_PTR(-ENOMEM);
-
- reporter->priv = priv;
- reporter->ops = ops;
- reporter->devlink = devlink;
- reporter->graceful_period = graceful_period;
- reporter->auto_recover = !!ops->recover;
- reporter->auto_dump = !!ops->dump;
- mutex_init(&reporter->dump_lock);
- refcount_set(&reporter->refcount, 1);
- return reporter;
-}
-
-/**
- * devlink_port_health_reporter_create - create devlink health reporter for
- * specified port instance
- *
- * @port: devlink_port which should contain the new reporter
- * @ops: ops
- * @graceful_period: to avoid recovery loops, in msecs
- * @priv: priv
- */
-struct devlink_health_reporter *
-devlink_port_health_reporter_create(struct devlink_port *port,
- const struct devlink_health_reporter_ops *ops,
- u64 graceful_period, void *priv)
-{
- struct devlink_health_reporter *reporter;
-
- mutex_lock(&port->reporters_lock);
- if (__devlink_health_reporter_find_by_name(&port->reporter_list,
- &port->reporters_lock, ops->name)) {
- reporter = ERR_PTR(-EEXIST);
- goto unlock;
- }
-
- reporter = __devlink_health_reporter_create(port->devlink, ops,
- graceful_period, priv);
- if (IS_ERR(reporter))
- goto unlock;
-
- reporter->devlink_port = port;
- list_add_tail(&reporter->list, &port->reporter_list);
-unlock:
- mutex_unlock(&port->reporters_lock);
- return reporter;
-}
-EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
-
-/**
- * devlink_health_reporter_create - create devlink health reporter
- *
- * @devlink: devlink
- * @ops: ops
- * @graceful_period: to avoid recovery loops, in msecs
- * @priv: priv
- */
-struct devlink_health_reporter *
-devlink_health_reporter_create(struct devlink *devlink,
- const struct devlink_health_reporter_ops *ops,
- u64 graceful_period, void *priv)
-{
- struct devlink_health_reporter *reporter;
-
- mutex_lock(&devlink->reporters_lock);
- if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
- reporter = ERR_PTR(-EEXIST);
- goto unlock;
- }
-
- reporter = __devlink_health_reporter_create(devlink, ops,
- graceful_period, priv);
- if (IS_ERR(reporter))
- goto unlock;
-
- list_add_tail(&reporter->list, &devlink->reporter_list);
-unlock:
- mutex_unlock(&devlink->reporters_lock);
- return reporter;
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
-
-static void
-devlink_health_reporter_free(struct devlink_health_reporter *reporter)
-{
- mutex_destroy(&reporter->dump_lock);
- if (reporter->dump_fmsg)
- devlink_fmsg_free(reporter->dump_fmsg);
- kfree(reporter);
-}
-
-static void
-devlink_health_reporter_put(struct devlink_health_reporter *reporter)
-{
- if (refcount_dec_and_test(&reporter->refcount))
- devlink_health_reporter_free(reporter);
-}
-
-static void
-__devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
-{
- list_del(&reporter->list);
- devlink_health_reporter_put(reporter);
-}
-
-/**
- * devlink_health_reporter_destroy - destroy devlink health reporter
- *
- * @reporter: devlink health reporter to destroy
- */
-void
-devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
-{
- struct mutex *lock = &reporter->devlink->reporters_lock;
-
- mutex_lock(lock);
- __devlink_health_reporter_destroy(reporter);
- mutex_unlock(lock);
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
-
-/**
- * devlink_port_health_reporter_destroy - destroy devlink port health reporter
- *
- * @reporter: devlink health reporter to destroy
- */
-void
-devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
-{
- struct mutex *lock = &reporter->devlink_port->reporters_lock;
-
- mutex_lock(lock);
- __devlink_health_reporter_destroy(reporter);
- mutex_unlock(lock);
-}
-EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
-
-static int
-devlink_nl_health_reporter_fill(struct sk_buff *msg,
- struct devlink_health_reporter *reporter,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags)
-{
- struct devlink *devlink = reporter->devlink;
- struct nlattr *reporter_attr;
- void *hdr;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto genlmsg_cancel;
-
- if (reporter->devlink_port) {
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
- goto genlmsg_cancel;
- }
- reporter_attr = nla_nest_start_noflag(msg,
- DEVLINK_ATTR_HEALTH_REPORTER);
- if (!reporter_attr)
- goto genlmsg_cancel;
- if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
- reporter->ops->name))
- goto reporter_nest_cancel;
- if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
- reporter->health_state))
- goto reporter_nest_cancel;
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
- reporter->error_count, DEVLINK_ATTR_PAD))
- goto reporter_nest_cancel;
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
- reporter->recovery_count, DEVLINK_ATTR_PAD))
- goto reporter_nest_cancel;
- if (reporter->ops->recover &&
- nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
- reporter->graceful_period,
- DEVLINK_ATTR_PAD))
- goto reporter_nest_cancel;
- if (reporter->ops->recover &&
- nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
- reporter->auto_recover))
- goto reporter_nest_cancel;
- if (reporter->dump_fmsg &&
- nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
- jiffies_to_msecs(reporter->dump_ts),
- DEVLINK_ATTR_PAD))
- goto reporter_nest_cancel;
- if (reporter->dump_fmsg &&
- nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
- reporter->dump_real_ts, DEVLINK_ATTR_PAD))
- goto reporter_nest_cancel;
- if (reporter->ops->dump &&
- nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
- reporter->auto_dump))
- goto reporter_nest_cancel;
-
- nla_nest_end(msg, reporter_attr);
- genlmsg_end(msg, hdr);
- return 0;
-
-reporter_nest_cancel:
- nla_nest_end(msg, reporter_attr);
-genlmsg_cancel:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void devlink_recover_notify(struct devlink_health_reporter *reporter,
- enum devlink_command cmd)
-{
- struct devlink *devlink = reporter->devlink;
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
- WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_health_reporter_fill(msg, reporter, cmd, 0, 0, 0);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
- 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-void
-devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
-{
- reporter->recovery_count++;
- reporter->last_recovery_ts = jiffies;
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
-
-static int
-devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
- void *priv_ctx, struct netlink_ext_ack *extack)
-{
- int err;
-
- if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
- return 0;
-
- if (!reporter->ops->recover)
- return -EOPNOTSUPP;
-
- err = reporter->ops->recover(reporter, priv_ctx, extack);
- if (err)
- return err;
-
- devlink_health_reporter_recovery_done(reporter);
- reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
- devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
-
- return 0;
-}
-
-static void
-devlink_health_dump_clear(struct devlink_health_reporter *reporter)
-{
- if (!reporter->dump_fmsg)
- return;
- devlink_fmsg_free(reporter->dump_fmsg);
- reporter->dump_fmsg = NULL;
-}
-
-static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
- void *priv_ctx,
- struct netlink_ext_ack *extack)
-{
- int err;
-
- if (!reporter->ops->dump)
- return 0;
-
- if (reporter->dump_fmsg)
- return 0;
-
- reporter->dump_fmsg = devlink_fmsg_alloc();
- if (!reporter->dump_fmsg) {
- err = -ENOMEM;
- return err;
- }
-
- err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
- if (err)
- goto dump_err;
-
- err = reporter->ops->dump(reporter, reporter->dump_fmsg,
- priv_ctx, extack);
- if (err)
- goto dump_err;
-
- err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
- if (err)
- goto dump_err;
-
- reporter->dump_ts = jiffies;
- reporter->dump_real_ts = ktime_get_real_ns();
-
- return 0;
-
-dump_err:
- devlink_health_dump_clear(reporter);
- return err;
-}
-
-int devlink_health_report(struct devlink_health_reporter *reporter,
- const char *msg, void *priv_ctx)
-{
- enum devlink_health_reporter_state prev_health_state;
- struct devlink *devlink = reporter->devlink;
- unsigned long recover_ts_threshold;
- int ret;
-
- /* write a log message of the current error */
- WARN_ON(!msg);
- trace_devlink_health_report(devlink, reporter->ops->name, msg);
- reporter->error_count++;
- prev_health_state = reporter->health_state;
- reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
- devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
-
- /* abort if the previous error wasn't recovered */
- recover_ts_threshold = reporter->last_recovery_ts +
- msecs_to_jiffies(reporter->graceful_period);
- if (reporter->auto_recover &&
- (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
- (reporter->last_recovery_ts && reporter->recovery_count &&
- time_is_after_jiffies(recover_ts_threshold)))) {
- trace_devlink_health_recover_aborted(devlink,
- reporter->ops->name,
- reporter->health_state,
- jiffies -
- reporter->last_recovery_ts);
- return -ECANCELED;
- }
-
- if (reporter->auto_dump) {
- mutex_lock(&reporter->dump_lock);
- /* store current dump of current error, for later analysis */
- devlink_health_do_dump(reporter, priv_ctx, NULL);
- mutex_unlock(&reporter->dump_lock);
- }
-
- if (!reporter->auto_recover)
- return 0;
-
- devl_lock(devlink);
- ret = devlink_health_reporter_recover(reporter, priv_ctx, NULL);
- devl_unlock(devlink);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(devlink_health_report);
-
-static struct devlink_health_reporter *
-devlink_health_reporter_get_from_attrs(struct devlink *devlink,
- struct nlattr **attrs)
-{
- struct devlink_health_reporter *reporter;
- struct devlink_port *devlink_port;
- char *reporter_name;
-
- if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
- return NULL;
-
- reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
- devlink_port = devlink_port_get_from_attrs(devlink, attrs);
- if (IS_ERR(devlink_port)) {
- mutex_lock(&devlink->reporters_lock);
- reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
- if (reporter)
- refcount_inc(&reporter->refcount);
- mutex_unlock(&devlink->reporters_lock);
- } else {
- mutex_lock(&devlink_port->reporters_lock);
- reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
- if (reporter)
- refcount_inc(&reporter->refcount);
- mutex_unlock(&devlink_port->reporters_lock);
- }
-
- return reporter;
-}
-
-static struct devlink_health_reporter *
-devlink_health_reporter_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
-}
-
-static struct devlink_health_reporter *
-devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
-{
- const struct genl_dumpit_info *info = genl_dumpit_info(cb);
- struct devlink_health_reporter *reporter;
- struct nlattr **attrs = info->attrs;
- struct devlink *devlink;
-
- devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
- if (IS_ERR(devlink))
- return NULL;
-
- reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
- devlink_put(devlink);
- return reporter;
-}
-
-void
-devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
- enum devlink_health_reporter_state state)
-{
- if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
- state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
- return;
-
- if (reporter->health_state == state)
- return;
-
- reporter->health_state = state;
- trace_devlink_health_reporter_state_update(reporter->devlink,
- reporter->ops->name, state);
- devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
-
-static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_health_reporter *reporter;
- struct sk_buff *msg;
- int err;
-
- reporter = devlink_health_reporter_get_from_info(devlink, info);
- if (!reporter)
- return -EINVAL;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOMEM;
- goto out;
- }
-
- err = devlink_nl_health_reporter_fill(msg, reporter,
- DEVLINK_CMD_HEALTH_REPORTER_GET,
- info->snd_portid, info->snd_seq,
- 0);
- if (err) {
- nlmsg_free(msg);
- goto out;
- }
-
- err = genlmsg_reply(msg, info);
-out:
- devlink_health_reporter_put(reporter);
- return err;
-}
-
-static int
-devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink_health_reporter *reporter;
- unsigned long index, port_index;
- struct devlink_port *port;
- struct devlink *devlink;
- int start = cb->args[0];
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- mutex_lock(&devlink->reporters_lock);
- list_for_each_entry(reporter, &devlink->reporter_list,
- list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_health_reporter_fill(
- msg, reporter, DEVLINK_CMD_HEALTH_REPORTER_GET,
- NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
- if (err) {
- mutex_unlock(&devlink->reporters_lock);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- mutex_unlock(&devlink->reporters_lock);
- devlink_put(devlink);
- }
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- xa_for_each(&devlink->ports, port_index, port) {
- mutex_lock(&port->reporters_lock);
- list_for_each_entry(reporter, &port->reporter_list, list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_health_reporter_fill(
- msg, reporter,
- DEVLINK_CMD_HEALTH_REPORTER_GET,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq, NLM_F_MULTI);
- if (err) {
- mutex_unlock(&port->reporters_lock);
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- mutex_unlock(&port->reporters_lock);
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int
-devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_health_reporter *reporter;
- int err;
-
- reporter = devlink_health_reporter_get_from_info(devlink, info);
- if (!reporter)
- return -EINVAL;
-
- if (!reporter->ops->recover &&
- (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
- info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
- err = -EOPNOTSUPP;
- goto out;
- }
- if (!reporter->ops->dump &&
- info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
- reporter->graceful_period =
- nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
-
- if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
- reporter->auto_recover =
- nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
-
- if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
- reporter->auto_dump =
- nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
-
- devlink_health_reporter_put(reporter);
- return 0;
-out:
- devlink_health_reporter_put(reporter);
- return err;
-}
-
-static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_health_reporter *reporter;
- int err;
-
- reporter = devlink_health_reporter_get_from_info(devlink, info);
- if (!reporter)
- return -EINVAL;
-
- err = devlink_health_reporter_recover(reporter, NULL, info->extack);
-
- devlink_health_reporter_put(reporter);
- return err;
-}
-
-static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_health_reporter *reporter;
- struct devlink_fmsg *fmsg;
- int err;
-
- reporter = devlink_health_reporter_get_from_info(devlink, info);
- if (!reporter)
- return -EINVAL;
-
- if (!reporter->ops->diagnose) {
- devlink_health_reporter_put(reporter);
- return -EOPNOTSUPP;
- }
-
- fmsg = devlink_fmsg_alloc();
- if (!fmsg) {
- devlink_health_reporter_put(reporter);
- return -ENOMEM;
- }
-
- err = devlink_fmsg_obj_nest_start(fmsg);
- if (err)
- goto out;
-
- err = reporter->ops->diagnose(reporter, fmsg, info->extack);
- if (err)
- goto out;
-
- err = devlink_fmsg_obj_nest_end(fmsg);
- if (err)
- goto out;
-
- err = devlink_fmsg_snd(fmsg, info,
- DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
-
-out:
- devlink_fmsg_free(fmsg);
- devlink_health_reporter_put(reporter);
- return err;
-}
-
-static int
-devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
- struct netlink_callback *cb)
-{
- struct devlink_health_reporter *reporter;
- u64 start = cb->args[0];
- int err;
-
- reporter = devlink_health_reporter_get_from_cb(cb);
- if (!reporter)
- return -EINVAL;
-
- if (!reporter->ops->dump) {
- err = -EOPNOTSUPP;
- goto out;
- }
- mutex_lock(&reporter->dump_lock);
- if (!start) {
- err = devlink_health_do_dump(reporter, NULL, cb->extack);
- if (err)
- goto unlock;
- cb->args[1] = reporter->dump_ts;
- }
- if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
- NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
- err = -EAGAIN;
- goto unlock;
- }
-
- err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
- DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
-unlock:
- mutex_unlock(&reporter->dump_lock);
-out:
- devlink_health_reporter_put(reporter);
- return err;
-}
-
-static int
-devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_health_reporter *reporter;
-
- reporter = devlink_health_reporter_get_from_info(devlink, info);
- if (!reporter)
- return -EINVAL;
-
- if (!reporter->ops->dump) {
- devlink_health_reporter_put(reporter);
- return -EOPNOTSUPP;
- }
-
- mutex_lock(&reporter->dump_lock);
- devlink_health_dump_clear(reporter);
- mutex_unlock(&reporter->dump_lock);
- devlink_health_reporter_put(reporter);
- return 0;
-}
-
-static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_health_reporter *reporter;
- int err;
-
- reporter = devlink_health_reporter_get_from_info(devlink, info);
- if (!reporter)
- return -EINVAL;
-
- if (!reporter->ops->test) {
- devlink_health_reporter_put(reporter);
- return -EOPNOTSUPP;
- }
-
- err = reporter->ops->test(reporter, info->extack);
-
- devlink_health_reporter_put(reporter);
- return err;
-}
-
-struct devlink_stats {
- u64_stats_t rx_bytes;
- u64_stats_t rx_packets;
- struct u64_stats_sync syncp;
-};
-
-/**
- * struct devlink_trap_policer_item - Packet trap policer attributes.
- * @policer: Immutable packet trap policer attributes.
- * @rate: Rate in packets / sec.
- * @burst: Burst size in packets.
- * @list: trap_policer_list member.
- *
- * Describes packet trap policer attributes. Created by devlink during trap
- * policer registration.
- */
-struct devlink_trap_policer_item {
- const struct devlink_trap_policer *policer;
- u64 rate;
- u64 burst;
- struct list_head list;
-};
-
-/**
- * struct devlink_trap_group_item - Packet trap group attributes.
- * @group: Immutable packet trap group attributes.
- * @policer_item: Associated policer item. Can be NULL.
- * @list: trap_group_list member.
- * @stats: Trap group statistics.
- *
- * Describes packet trap group attributes. Created by devlink during trap
- * group registration.
- */
-struct devlink_trap_group_item {
- const struct devlink_trap_group *group;
- struct devlink_trap_policer_item *policer_item;
- struct list_head list;
- struct devlink_stats __percpu *stats;
-};
-
-/**
- * struct devlink_trap_item - Packet trap attributes.
- * @trap: Immutable packet trap attributes.
- * @group_item: Associated group item.
- * @list: trap_list member.
- * @action: Trap action.
- * @stats: Trap statistics.
- * @priv: Driver private information.
- *
- * Describes both mutable and immutable packet trap attributes. Created by
- * devlink during trap registration and used for all trap related operations.
- */
-struct devlink_trap_item {
- const struct devlink_trap *trap;
- struct devlink_trap_group_item *group_item;
- struct list_head list;
- enum devlink_trap_action action;
- struct devlink_stats __percpu *stats;
- void *priv;
-};
-
-static struct devlink_trap_policer_item *
-devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
-{
- struct devlink_trap_policer_item *policer_item;
-
- list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
- if (policer_item->policer->id == id)
- return policer_item;
- }
-
- return NULL;
-}
-
-static struct devlink_trap_item *
-devlink_trap_item_lookup(struct devlink *devlink, const char *name)
-{
- struct devlink_trap_item *trap_item;
-
- list_for_each_entry(trap_item, &devlink->trap_list, list) {
- if (!strcmp(trap_item->trap->name, name))
- return trap_item;
- }
-
- return NULL;
-}
-
-static struct devlink_trap_item *
-devlink_trap_item_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- struct nlattr *attr;
-
- if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
- return NULL;
- attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
-
- return devlink_trap_item_lookup(devlink, nla_data(attr));
-}
-
-static int
-devlink_trap_action_get_from_info(struct genl_info *info,
- enum devlink_trap_action *p_trap_action)
-{
- u8 val;
-
- val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
- switch (val) {
- case DEVLINK_TRAP_ACTION_DROP:
- case DEVLINK_TRAP_ACTION_TRAP:
- case DEVLINK_TRAP_ACTION_MIRROR:
- *p_trap_action = val;
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int devlink_trap_metadata_put(struct sk_buff *msg,
- const struct devlink_trap *trap)
-{
- struct nlattr *attr;
-
- attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
- if (!attr)
- return -EMSGSIZE;
-
- if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
- nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
- goto nla_put_failure;
- if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
- nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
- goto nla_put_failure;
-
- nla_nest_end(msg, attr);
-
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, attr);
- return -EMSGSIZE;
-}
-
-static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
- struct devlink_stats *stats)
-{
- int i;
-
- memset(stats, 0, sizeof(*stats));
- for_each_possible_cpu(i) {
- struct devlink_stats *cpu_stats;
- u64 rx_packets, rx_bytes;
- unsigned int start;
-
- cpu_stats = per_cpu_ptr(trap_stats, i);
- do {
- start = u64_stats_fetch_begin(&cpu_stats->syncp);
- rx_packets = u64_stats_read(&cpu_stats->rx_packets);
- rx_bytes = u64_stats_read(&cpu_stats->rx_bytes);
- } while (u64_stats_fetch_retry(&cpu_stats->syncp, start));
-
- u64_stats_add(&stats->rx_packets, rx_packets);
- u64_stats_add(&stats->rx_bytes, rx_bytes);
- }
-}
-
-static int
-devlink_trap_group_stats_put(struct sk_buff *msg,
- struct devlink_stats __percpu *trap_stats)
-{
- struct devlink_stats stats;
- struct nlattr *attr;
-
- devlink_trap_stats_read(trap_stats, &stats);
-
- attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
- if (!attr)
- return -EMSGSIZE;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
- u64_stats_read(&stats.rx_packets),
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
- u64_stats_read(&stats.rx_bytes),
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- nla_nest_end(msg, attr);
-
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, attr);
- return -EMSGSIZE;
-}
-
-static int devlink_trap_stats_put(struct sk_buff *msg, struct devlink *devlink,
- const struct devlink_trap_item *trap_item)
-{
- struct devlink_stats stats;
- struct nlattr *attr;
- u64 drops = 0;
- int err;
-
- if (devlink->ops->trap_drop_counter_get) {
- err = devlink->ops->trap_drop_counter_get(devlink,
- trap_item->trap,
- &drops);
- if (err)
- return err;
- }
-
- devlink_trap_stats_read(trap_item->stats, &stats);
-
- attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
- if (!attr)
- return -EMSGSIZE;
-
- if (devlink->ops->trap_drop_counter_get &&
- nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
- u64_stats_read(&stats.rx_packets),
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
- u64_stats_read(&stats.rx_bytes),
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- nla_nest_end(msg, attr);
-
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, attr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
- const struct devlink_trap_item *trap_item,
- enum devlink_command cmd, u32 portid, u32 seq,
- int flags)
-{
- struct devlink_trap_group_item *group_item = trap_item->group_item;
- void *hdr;
- int err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
- group_item->group->name))
- goto nla_put_failure;
-
- if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
- goto nla_put_failure;
-
- if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
- goto nla_put_failure;
-
- if (trap_item->trap->generic &&
- nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
- goto nla_put_failure;
-
- if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
- goto nla_put_failure;
-
- err = devlink_trap_metadata_put(msg, trap_item->trap);
- if (err)
- goto nla_put_failure;
-
- err = devlink_trap_stats_put(msg, devlink, trap_item);
- if (err)
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
-
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_trap_item *trap_item;
- struct sk_buff *msg;
- int err;
-
- if (list_empty(&devlink->trap_list))
- return -EOPNOTSUPP;
-
- trap_item = devlink_trap_item_get_from_info(devlink, info);
- if (!trap_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
- return -ENOENT;
- }
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_trap_fill(msg, devlink, trap_item,
- DEVLINK_CMD_TRAP_NEW, info->snd_portid,
- info->snd_seq, 0);
- if (err)
- goto err_trap_fill;
-
- return genlmsg_reply(msg, info);
-
-err_trap_fill:
- nlmsg_free(msg);
- return err;
-}
-
-static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink_trap_item *trap_item;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(trap_item, &devlink->trap_list, list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_trap_fill(msg, devlink, trap_item,
- DEVLINK_CMD_TRAP_NEW,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int __devlink_trap_action_set(struct devlink *devlink,
- struct devlink_trap_item *trap_item,
- enum devlink_trap_action trap_action,
- struct netlink_ext_ack *extack)
-{
- int err;
-
- if (trap_item->action != trap_action &&
- trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
- NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
- return 0;
- }
-
- err = devlink->ops->trap_action_set(devlink, trap_item->trap,
- trap_action, extack);
- if (err)
- return err;
-
- trap_item->action = trap_action;
-
- return 0;
-}
-
-static int devlink_trap_action_set(struct devlink *devlink,
- struct devlink_trap_item *trap_item,
- struct genl_info *info)
-{
- enum devlink_trap_action trap_action;
- int err;
-
- if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
- return 0;
-
- err = devlink_trap_action_get_from_info(info, &trap_action);
- if (err) {
- NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
- return -EINVAL;
- }
-
- return __devlink_trap_action_set(devlink, trap_item, trap_action,
- info->extack);
-}
-
-static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_trap_item *trap_item;
-
- if (list_empty(&devlink->trap_list))
- return -EOPNOTSUPP;
-
- trap_item = devlink_trap_item_get_from_info(devlink, info);
- if (!trap_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
- return -ENOENT;
- }
-
- return devlink_trap_action_set(devlink, trap_item, info);
-}
-
-static struct devlink_trap_group_item *
-devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
-{
- struct devlink_trap_group_item *group_item;
-
- list_for_each_entry(group_item, &devlink->trap_group_list, list) {
- if (!strcmp(group_item->group->name, name))
- return group_item;
- }
-
- return NULL;
-}
-
-static struct devlink_trap_group_item *
-devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
-{
- struct devlink_trap_group_item *group_item;
-
- list_for_each_entry(group_item, &devlink->trap_group_list, list) {
- if (group_item->group->id == id)
- return group_item;
- }
-
- return NULL;
-}
-
-static struct devlink_trap_group_item *
-devlink_trap_group_item_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- char *name;
-
- if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
- return NULL;
- name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
-
- return devlink_trap_group_item_lookup(devlink, name);
-}
-
-static int
-devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
- const struct devlink_trap_group_item *group_item,
- enum devlink_command cmd, u32 portid, u32 seq,
- int flags)
-{
- void *hdr;
- int err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
- group_item->group->name))
- goto nla_put_failure;
-
- if (group_item->group->generic &&
- nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
- goto nla_put_failure;
-
- if (group_item->policer_item &&
- nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
- group_item->policer_item->policer->id))
- goto nla_put_failure;
-
- err = devlink_trap_group_stats_put(msg, group_item->stats);
- if (err)
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
-
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_trap_group_item *group_item;
- struct sk_buff *msg;
- int err;
-
- if (list_empty(&devlink->trap_group_list))
- return -EOPNOTSUPP;
-
- group_item = devlink_trap_group_item_get_from_info(devlink, info);
- if (!group_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
- return -ENOENT;
- }
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_trap_group_fill(msg, devlink, group_item,
- DEVLINK_CMD_TRAP_GROUP_NEW,
- info->snd_portid, info->snd_seq, 0);
- if (err)
- goto err_trap_group_fill;
-
- return genlmsg_reply(msg, info);
-
-err_trap_group_fill:
- nlmsg_free(msg);
- return err;
-}
-
-static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
- struct devlink_trap_group_item *group_item;
- u32 portid = NETLINK_CB(cb->skb).portid;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(group_item, &devlink->trap_group_list,
- list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_trap_group_fill(msg, devlink,
- group_item, cmd,
- portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int
-__devlink_trap_group_action_set(struct devlink *devlink,
- struct devlink_trap_group_item *group_item,
- enum devlink_trap_action trap_action,
- struct netlink_ext_ack *extack)
-{
- const char *group_name = group_item->group->name;
- struct devlink_trap_item *trap_item;
- int err;
-
- if (devlink->ops->trap_group_action_set) {
- err = devlink->ops->trap_group_action_set(devlink, group_item->group,
- trap_action, extack);
- if (err)
- return err;
-
- list_for_each_entry(trap_item, &devlink->trap_list, list) {
- if (strcmp(trap_item->group_item->group->name, group_name))
- continue;
- if (trap_item->action != trap_action &&
- trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
- continue;
- trap_item->action = trap_action;
- }
-
- return 0;
- }
-
- list_for_each_entry(trap_item, &devlink->trap_list, list) {
- if (strcmp(trap_item->group_item->group->name, group_name))
- continue;
- err = __devlink_trap_action_set(devlink, trap_item,
- trap_action, extack);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-static int
-devlink_trap_group_action_set(struct devlink *devlink,
- struct devlink_trap_group_item *group_item,
- struct genl_info *info, bool *p_modified)
-{
- enum devlink_trap_action trap_action;
- int err;
-
- if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
- return 0;
-
- err = devlink_trap_action_get_from_info(info, &trap_action);
- if (err) {
- NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
- return -EINVAL;
- }
-
- err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
- info->extack);
- if (err)
- return err;
-
- *p_modified = true;
-
- return 0;
-}
-
-static int devlink_trap_group_set(struct devlink *devlink,
- struct devlink_trap_group_item *group_item,
- struct genl_info *info)
-{
- struct devlink_trap_policer_item *policer_item;
- struct netlink_ext_ack *extack = info->extack;
- const struct devlink_trap_policer *policer;
- struct nlattr **attrs = info->attrs;
- int err;
-
- if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
- return 0;
-
- if (!devlink->ops->trap_group_set)
- return -EOPNOTSUPP;
-
- policer_item = group_item->policer_item;
- if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
- u32 policer_id;
-
- policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
- policer_item = devlink_trap_policer_item_lookup(devlink,
- policer_id);
- if (policer_id && !policer_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
- return -ENOENT;
- }
- }
- policer = policer_item ? policer_item->policer : NULL;
-
- err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
- extack);
- if (err)
- return err;
-
- group_item->policer_item = policer_item;
-
- return 0;
-}
-
-static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_trap_group_item *group_item;
- bool modified = false;
- int err;
-
- if (list_empty(&devlink->trap_group_list))
- return -EOPNOTSUPP;
-
- group_item = devlink_trap_group_item_get_from_info(devlink, info);
- if (!group_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
- return -ENOENT;
- }
-
- err = devlink_trap_group_action_set(devlink, group_item, info,
- &modified);
- if (err)
- return err;
-
- err = devlink_trap_group_set(devlink, group_item, info);
- if (err)
- goto err_trap_group_set;
-
- return 0;
-
-err_trap_group_set:
- if (modified)
- NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
- return err;
-}
-
-static struct devlink_trap_policer_item *
-devlink_trap_policer_item_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- u32 id;
-
- if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
- return NULL;
- id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
-
- return devlink_trap_policer_item_lookup(devlink, id);
-}
-
-static int
-devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
- const struct devlink_trap_policer *policer)
-{
- struct nlattr *attr;
- u64 drops;
- int err;
-
- if (!devlink->ops->trap_policer_counter_get)
- return 0;
-
- err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
- if (err)
- return err;
-
- attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
- if (!attr)
- return -EMSGSIZE;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- nla_nest_end(msg, attr);
-
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, attr);
- return -EMSGSIZE;
-}
-
-static int
-devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
- const struct devlink_trap_policer_item *policer_item,
- enum devlink_command cmd, u32 portid, u32 seq,
- int flags)
-{
- void *hdr;
- int err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
- policer_item->policer->id))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
- policer_item->rate, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
- policer_item->burst, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- err = devlink_trap_policer_stats_put(msg, devlink,
- policer_item->policer);
- if (err)
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
-
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_trap_policer_item *policer_item;
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
- struct sk_buff *msg;
- int err;
-
- if (list_empty(&devlink->trap_policer_list))
- return -EOPNOTSUPP;
-
- policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
- if (!policer_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
- return -ENOENT;
- }
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
- DEVLINK_CMD_TRAP_POLICER_NEW,
- info->snd_portid, info->snd_seq, 0);
- if (err)
- goto err_trap_policer_fill;
-
- return genlmsg_reply(msg, info);
-
-err_trap_policer_fill:
- nlmsg_free(msg);
- return err;
-}
-
-static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
- struct devlink_trap_policer_item *policer_item;
- u32 portid = NETLINK_CB(cb->skb).portid;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(policer_item, &devlink->trap_policer_list,
- list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_trap_policer_fill(msg, devlink,
- policer_item, cmd,
- portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int
-devlink_trap_policer_set(struct devlink *devlink,
- struct devlink_trap_policer_item *policer_item,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct nlattr **attrs = info->attrs;
- u64 rate, burst;
- int err;
-
- rate = policer_item->rate;
- burst = policer_item->burst;
-
- if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
- rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
-
- if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
- burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
-
- if (rate < policer_item->policer->min_rate) {
- NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
- return -EINVAL;
- }
-
- if (rate > policer_item->policer->max_rate) {
- NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
- return -EINVAL;
- }
-
- if (burst < policer_item->policer->min_burst) {
- NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
- return -EINVAL;
- }
-
- if (burst > policer_item->policer->max_burst) {
- NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
- return -EINVAL;
- }
-
- err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
- rate, burst, info->extack);
- if (err)
- return err;
-
- policer_item->rate = rate;
- policer_item->burst = burst;
-
- return 0;
-}
-
-static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_trap_policer_item *policer_item;
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
-
- if (list_empty(&devlink->trap_policer_list))
- return -EOPNOTSUPP;
-
- if (!devlink->ops->trap_policer_set)
- return -EOPNOTSUPP;
-
- policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
- if (!policer_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
- return -ENOENT;
- }
-
- return devlink_trap_policer_set(devlink, policer_item, info);
-}
-
-static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
- [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
- DEVLINK_ATTR_TRAP_POLICER_ID },
- [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
- [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
- DEVLINK_PORT_TYPE_IB),
- [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
- [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
- [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
- [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
- [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
- [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
- [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
- [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
- [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
- DEVLINK_ESWITCH_MODE_SWITCHDEV),
- [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
- [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
- [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
- [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
- [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
- [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
- [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
- [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
- [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
- [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
- [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
- [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
- [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
- NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
- [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
- [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
- [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
- [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
- [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
- [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
- [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
- [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
- [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
- [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
- DEVLINK_RELOAD_ACTION_MAX),
- [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
- [DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 },
- [DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 },
- [DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 },
- [DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 },
- [DEVLINK_ATTR_RATE_TYPE] = { .type = NLA_U16 },
- [DEVLINK_ATTR_RATE_TX_SHARE] = { .type = NLA_U64 },
- [DEVLINK_ATTR_RATE_TX_MAX] = { .type = NLA_U64 },
- [DEVLINK_ATTR_RATE_NODE_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_RATE_PARENT_NODE_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_LINECARD_INDEX] = { .type = NLA_U32 },
- [DEVLINK_ATTR_LINECARD_TYPE] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_SELFTESTS] = { .type = NLA_NESTED },
- [DEVLINK_ATTR_RATE_TX_PRIORITY] = { .type = NLA_U32 },
- [DEVLINK_ATTR_RATE_TX_WEIGHT] = { .type = NLA_U32 },
- [DEVLINK_ATTR_REGION_DIRECT] = { .type = NLA_FLAG },
-};
-
-static const struct genl_small_ops devlink_nl_ops[] = {
- {
- .cmd = DEVLINK_CMD_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_get_doit,
- .dumpit = devlink_nl_cmd_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_PORT_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_port_get_doit,
- .dumpit = devlink_nl_cmd_port_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_PORT_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_port_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- },
- {
- .cmd = DEVLINK_CMD_RATE_GET,
- .doit = devlink_nl_cmd_rate_get_doit,
- .dumpit = devlink_nl_cmd_rate_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_RATE_SET,
- .doit = devlink_nl_cmd_rate_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
- },
- {
- .cmd = DEVLINK_CMD_RATE_NEW,
- .doit = devlink_nl_cmd_rate_new_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_RATE_DEL,
- .doit = devlink_nl_cmd_rate_del_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_RATE_NODE,
- },
- {
- .cmd = DEVLINK_CMD_PORT_SPLIT,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_port_split_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- },
- {
- .cmd = DEVLINK_CMD_PORT_UNSPLIT,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_port_unsplit_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- },
- {
- .cmd = DEVLINK_CMD_PORT_NEW,
- .doit = devlink_nl_cmd_port_new_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_PORT_DEL,
- .doit = devlink_nl_cmd_port_del_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_LINECARD_GET,
- .doit = devlink_nl_cmd_linecard_get_doit,
- .dumpit = devlink_nl_cmd_linecard_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_LINECARD,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_LINECARD_SET,
- .doit = devlink_nl_cmd_linecard_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_LINECARD,
- },
- {
- .cmd = DEVLINK_CMD_SB_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_get_doit,
- .dumpit = devlink_nl_cmd_sb_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_SB_POOL_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_pool_get_doit,
- .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_SB_POOL_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_pool_set_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_port_pool_get_doit,
- .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_port_pool_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- },
- {
- .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
- .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- },
- {
- .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_ESWITCH_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_eswitch_get_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_ESWITCH_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_eswitch_set_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_dpipe_table_get,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_dpipe_entries_get,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_dpipe_headers_get,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_dpipe_table_counters_set,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_RESOURCE_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_resource_set,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_RESOURCE_DUMP,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_resource_dump,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_RELOAD,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_reload,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_PARAM_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_param_get_doit,
- .dumpit = devlink_nl_cmd_param_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_PARAM_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_param_set_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_PORT_PARAM_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_port_param_get_doit,
- .dumpit = devlink_nl_cmd_port_param_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_PORT_PARAM_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_port_param_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- },
- {
- .cmd = DEVLINK_CMD_REGION_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_region_get_doit,
- .dumpit = devlink_nl_cmd_region_get_dumpit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_REGION_NEW,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_region_new,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_REGION_DEL,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_region_del,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_REGION_READ,
- .validate = GENL_DONT_VALIDATE_STRICT |
- GENL_DONT_VALIDATE_DUMP_STRICT,
- .dumpit = devlink_nl_cmd_region_read_dumpit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_INFO_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_info_get_doit,
- .dumpit = devlink_nl_cmd_info_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_health_reporter_get_doit,
- .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_health_reporter_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_health_reporter_recover_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
- .validate = GENL_DONT_VALIDATE_STRICT |
- GENL_DONT_VALIDATE_DUMP_STRICT,
- .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_health_reporter_test_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
- },
- {
- .cmd = DEVLINK_CMD_FLASH_UPDATE,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_flash_update,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_TRAP_GET,
- .doit = devlink_nl_cmd_trap_get_doit,
- .dumpit = devlink_nl_cmd_trap_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_TRAP_SET,
- .doit = devlink_nl_cmd_trap_set_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
- .doit = devlink_nl_cmd_trap_group_get_doit,
- .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
- .doit = devlink_nl_cmd_trap_group_set_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
- .doit = devlink_nl_cmd_trap_policer_get_doit,
- .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
- .doit = devlink_nl_cmd_trap_policer_set_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_SELFTESTS_GET,
- .doit = devlink_nl_cmd_selftests_get_doit,
- .dumpit = devlink_nl_cmd_selftests_get_dumpit
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_SELFTESTS_RUN,
- .doit = devlink_nl_cmd_selftests_run,
- .flags = GENL_ADMIN_PERM,
- },
-};
-
-static struct genl_family devlink_nl_family __ro_after_init = {
- .name = DEVLINK_GENL_NAME,
- .version = DEVLINK_GENL_VERSION,
- .maxattr = DEVLINK_ATTR_MAX,
- .policy = devlink_nl_policy,
- .netnsok = true,
- .parallel_ops = true,
- .pre_doit = devlink_nl_pre_doit,
- .post_doit = devlink_nl_post_doit,
- .module = THIS_MODULE,
- .small_ops = devlink_nl_ops,
- .n_small_ops = ARRAY_SIZE(devlink_nl_ops),
- .resv_start_op = DEVLINK_CMD_SELFTESTS_RUN + 1,
- .mcgrps = devlink_nl_mcgrps,
- .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
-};
-
-static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
-{
- const struct devlink_reload_combination *comb;
- int i;
-
- if (!devlink_reload_supported(ops)) {
- if (WARN_ON(ops->reload_actions))
- return false;
- return true;
- }
-
- if (WARN_ON(!ops->reload_actions ||
- ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
- ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
- return false;
-
- if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
- ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
- return false;
-
- for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
- comb = &devlink_reload_invalid_combinations[i];
- if (ops->reload_actions == BIT(comb->action) &&
- ops->reload_limits == BIT(comb->limit))
- return false;
- }
- return true;
-}
-
-/**
- * devlink_set_features - Set devlink supported features
- *
- * @devlink: devlink
- * @features: devlink support features
- *
- * This interface allows us to set reload ops separatelly from
- * the devlink_alloc.
- */
-void devlink_set_features(struct devlink *devlink, u64 features)
-{
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- WARN_ON(features & DEVLINK_F_RELOAD &&
- !devlink_reload_supported(devlink->ops));
- devlink->features = features;
-}
-EXPORT_SYMBOL_GPL(devlink_set_features);
-
-static int devlink_netdevice_event(struct notifier_block *nb,
- unsigned long event, void *ptr);
-
-/**
- * devlink_alloc_ns - Allocate new devlink instance resources
- * in specific namespace
- *
- * @ops: ops
- * @priv_size: size of user private data
- * @net: net namespace
- * @dev: parent device
- *
- * Allocate new devlink instance resources, including devlink index
- * and name.
- */
-struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
- size_t priv_size, struct net *net,
- struct device *dev)
-{
- struct devlink *devlink;
- static u32 last_id;
- int ret;
-
- WARN_ON(!ops || !dev);
- if (!devlink_reload_actions_valid(ops))
- return NULL;
-
- devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
- if (!devlink)
- return NULL;
-
- ret = xa_alloc_cyclic(&devlinks, &devlink->index, devlink, xa_limit_31b,
- &last_id, GFP_KERNEL);
- if (ret < 0)
- goto err_xa_alloc;
-
- devlink->netdevice_nb.notifier_call = devlink_netdevice_event;
- ret = register_netdevice_notifier_net(net, &devlink->netdevice_nb);
- if (ret)
- goto err_register_netdevice_notifier;
-
- devlink->dev = dev;
- devlink->ops = ops;
- xa_init_flags(&devlink->ports, XA_FLAGS_ALLOC);
- xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
- write_pnet(&devlink->_net, net);
- INIT_LIST_HEAD(&devlink->rate_list);
- INIT_LIST_HEAD(&devlink->linecard_list);
- INIT_LIST_HEAD(&devlink->sb_list);
- INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
- INIT_LIST_HEAD(&devlink->resource_list);
- INIT_LIST_HEAD(&devlink->param_list);
- INIT_LIST_HEAD(&devlink->region_list);
- INIT_LIST_HEAD(&devlink->reporter_list);
- INIT_LIST_HEAD(&devlink->trap_list);
- INIT_LIST_HEAD(&devlink->trap_group_list);
- INIT_LIST_HEAD(&devlink->trap_policer_list);
- lockdep_register_key(&devlink->lock_key);
- mutex_init(&devlink->lock);
- lockdep_set_class(&devlink->lock, &devlink->lock_key);
- mutex_init(&devlink->reporters_lock);
- mutex_init(&devlink->linecards_lock);
- refcount_set(&devlink->refcount, 1);
- init_completion(&devlink->comp);
-
- return devlink;
-
-err_register_netdevice_notifier:
- xa_erase(&devlinks, devlink->index);
-err_xa_alloc:
- kfree(devlink);
- return NULL;
-}
-EXPORT_SYMBOL_GPL(devlink_alloc_ns);
-
-static void
-devlink_trap_policer_notify(struct devlink *devlink,
- const struct devlink_trap_policer_item *policer_item,
- enum devlink_command cmd);
-static void
-devlink_trap_group_notify(struct devlink *devlink,
- const struct devlink_trap_group_item *group_item,
- enum devlink_command cmd);
-static void devlink_trap_notify(struct devlink *devlink,
- const struct devlink_trap_item *trap_item,
- enum devlink_command cmd);
-
-static void devlink_notify_register(struct devlink *devlink)
-{
- struct devlink_trap_policer_item *policer_item;
- struct devlink_trap_group_item *group_item;
- struct devlink_param_item *param_item;
- struct devlink_trap_item *trap_item;
- struct devlink_port *devlink_port;
- struct devlink_linecard *linecard;
- struct devlink_rate *rate_node;
- struct devlink_region *region;
- unsigned long port_index;
-
- devlink_notify(devlink, DEVLINK_CMD_NEW);
- list_for_each_entry(linecard, &devlink->linecard_list, list)
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
-
- xa_for_each(&devlink->ports, port_index, devlink_port)
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
-
- list_for_each_entry(policer_item, &devlink->trap_policer_list, list)
- devlink_trap_policer_notify(devlink, policer_item,
- DEVLINK_CMD_TRAP_POLICER_NEW);
-
- list_for_each_entry(group_item, &devlink->trap_group_list, list)
- devlink_trap_group_notify(devlink, group_item,
- DEVLINK_CMD_TRAP_GROUP_NEW);
-
- list_for_each_entry(trap_item, &devlink->trap_list, list)
- devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
-
- list_for_each_entry(rate_node, &devlink->rate_list, list)
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
-
- list_for_each_entry(region, &devlink->region_list, list)
- devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
-
- list_for_each_entry(param_item, &devlink->param_list, list)
- devlink_param_notify(devlink, 0, param_item,
- DEVLINK_CMD_PARAM_NEW);
-}
-
-static void devlink_notify_unregister(struct devlink *devlink)
-{
- struct devlink_trap_policer_item *policer_item;
- struct devlink_trap_group_item *group_item;
- struct devlink_param_item *param_item;
- struct devlink_trap_item *trap_item;
- struct devlink_port *devlink_port;
- struct devlink_rate *rate_node;
- struct devlink_region *region;
- unsigned long port_index;
-
- list_for_each_entry_reverse(param_item, &devlink->param_list, list)
- devlink_param_notify(devlink, 0, param_item,
- DEVLINK_CMD_PARAM_DEL);
-
- list_for_each_entry_reverse(region, &devlink->region_list, list)
- devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
-
- list_for_each_entry_reverse(rate_node, &devlink->rate_list, list)
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
-
- list_for_each_entry_reverse(trap_item, &devlink->trap_list, list)
- devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
-
- list_for_each_entry_reverse(group_item, &devlink->trap_group_list, list)
- devlink_trap_group_notify(devlink, group_item,
- DEVLINK_CMD_TRAP_GROUP_DEL);
- list_for_each_entry_reverse(policer_item, &devlink->trap_policer_list,
- list)
- devlink_trap_policer_notify(devlink, policer_item,
- DEVLINK_CMD_TRAP_POLICER_DEL);
-
- xa_for_each(&devlink->ports, port_index, devlink_port)
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
- devlink_notify(devlink, DEVLINK_CMD_DEL);
-}
-
-/**
- * devlink_register - Register devlink instance
- *
- * @devlink: devlink
- */
-void devlink_register(struct devlink *devlink)
-{
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
- /* Make sure that we are in .probe() routine */
-
- xa_set_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
- devlink_notify_register(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_register);
-
-/**
- * devlink_unregister - Unregister devlink instance
- *
- * @devlink: devlink
- */
-void devlink_unregister(struct devlink *devlink)
-{
- ASSERT_DEVLINK_REGISTERED(devlink);
- /* Make sure that we are in .remove() routine */
-
- xa_set_mark(&devlinks, devlink->index, DEVLINK_UNREGISTERING);
- devlink_put(devlink);
- wait_for_completion(&devlink->comp);
-
- devlink_notify_unregister(devlink);
- xa_clear_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
- xa_clear_mark(&devlinks, devlink->index, DEVLINK_UNREGISTERING);
-}
-EXPORT_SYMBOL_GPL(devlink_unregister);
-
-/**
- * devlink_free - Free devlink instance resources
- *
- * @devlink: devlink
- */
-void devlink_free(struct devlink *devlink)
-{
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- mutex_destroy(&devlink->linecards_lock);
- mutex_destroy(&devlink->reporters_lock);
- mutex_destroy(&devlink->lock);
- lockdep_unregister_key(&devlink->lock_key);
- WARN_ON(!list_empty(&devlink->trap_policer_list));
- WARN_ON(!list_empty(&devlink->trap_group_list));
- WARN_ON(!list_empty(&devlink->trap_list));
- WARN_ON(!list_empty(&devlink->reporter_list));
- WARN_ON(!list_empty(&devlink->region_list));
- WARN_ON(!list_empty(&devlink->param_list));
- WARN_ON(!list_empty(&devlink->resource_list));
- WARN_ON(!list_empty(&devlink->dpipe_table_list));
- WARN_ON(!list_empty(&devlink->sb_list));
- WARN_ON(!list_empty(&devlink->rate_list));
- WARN_ON(!list_empty(&devlink->linecard_list));
- WARN_ON(!xa_empty(&devlink->ports));
-
- xa_destroy(&devlink->snapshot_ids);
- xa_destroy(&devlink->ports);
-
- WARN_ON_ONCE(unregister_netdevice_notifier_net(devlink_net(devlink),
- &devlink->netdevice_nb));
-
- xa_erase(&devlinks, devlink->index);
-
- kfree(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_free);
-
-static void devlink_port_type_warn(struct work_struct *work)
-{
- WARN(true, "Type was not set for devlink port.");
-}
-
-static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
-{
- /* Ignore CPU and DSA flavours. */
- return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
- devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
- devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
-}
-
-#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
-
-static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
-{
- if (!devlink_port_type_should_warn(devlink_port))
- return;
- /* Schedule a work to WARN in case driver does not set port
- * type within timeout.
- */
- schedule_delayed_work(&devlink_port->type_warn_dw,
- DEVLINK_PORT_TYPE_WARN_TIMEOUT);
-}
-
-static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
-{
- if (!devlink_port_type_should_warn(devlink_port))
- return;
- cancel_delayed_work_sync(&devlink_port->type_warn_dw);
-}
-
-/**
- * devlink_port_init() - Init devlink port
- *
- * @devlink: devlink
- * @devlink_port: devlink port
- *
- * Initialize essencial stuff that is needed for functions
- * that may be called before devlink port registration.
- * Call to this function is optional and not needed
- * in case the driver does not use such functions.
- */
-void devlink_port_init(struct devlink *devlink,
- struct devlink_port *devlink_port)
-{
- if (devlink_port->initialized)
- return;
- devlink_port->devlink = devlink;
- INIT_LIST_HEAD(&devlink_port->region_list);
- devlink_port->initialized = true;
-}
-EXPORT_SYMBOL_GPL(devlink_port_init);
-
-/**
- * devlink_port_fini() - Deinitialize devlink port
- *
- * @devlink_port: devlink port
- *
- * Deinitialize essencial stuff that is in use for functions
- * that may be called after devlink port unregistration.
- * Call to this function is optional and not needed
- * in case the driver does not use such functions.
- */
-void devlink_port_fini(struct devlink_port *devlink_port)
-{
- WARN_ON(!list_empty(&devlink_port->region_list));
-}
-EXPORT_SYMBOL_GPL(devlink_port_fini);
-
-/**
- * devl_port_register() - Register devlink port
- *
- * @devlink: devlink
- * @devlink_port: devlink port
- * @port_index: driver-specific numerical identifier of the port
- *
- * Register devlink port with provided port index. User can use
- * any indexing, even hw-related one. devlink_port structure
- * is convenient to be embedded inside user driver private structure.
- * Note that the caller should take care of zeroing the devlink_port
- * structure.
- */
-int devl_port_register(struct devlink *devlink,
- struct devlink_port *devlink_port,
- unsigned int port_index)
-{
- int err;
-
- devl_assert_locked(devlink);
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- devlink_port_init(devlink, devlink_port);
- devlink_port->registered = true;
- devlink_port->index = port_index;
- spin_lock_init(&devlink_port->type_lock);
- INIT_LIST_HEAD(&devlink_port->reporter_list);
- mutex_init(&devlink_port->reporters_lock);
- err = xa_insert(&devlink->ports, port_index, devlink_port, GFP_KERNEL);
- if (err) {
- mutex_destroy(&devlink_port->reporters_lock);
- return err;
- }
-
- INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
- devlink_port_type_warn_schedule(devlink_port);
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_port_register);
-
-/**
- * devlink_port_register - Register devlink port
- *
- * @devlink: devlink
- * @devlink_port: devlink port
- * @port_index: driver-specific numerical identifier of the port
- *
- * Register devlink port with provided port index. User can use
- * any indexing, even hw-related one. devlink_port structure
- * is convenient to be embedded inside user driver private structure.
- * Note that the caller should take care of zeroing the devlink_port
- * structure.
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-int devlink_port_register(struct devlink *devlink,
- struct devlink_port *devlink_port,
- unsigned int port_index)
-{
- int err;
-
- devl_lock(devlink);
- err = devl_port_register(devlink, devlink_port, port_index);
- devl_unlock(devlink);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_port_register);
-
-/**
- * devl_port_unregister() - Unregister devlink port
- *
- * @devlink_port: devlink port
- */
-void devl_port_unregister(struct devlink_port *devlink_port)
-{
- lockdep_assert_held(&devlink_port->devlink->lock);
- WARN_ON(devlink_port->type != DEVLINK_PORT_TYPE_NOTSET);
-
- devlink_port_type_warn_cancel(devlink_port);
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
- xa_erase(&devlink_port->devlink->ports, devlink_port->index);
- WARN_ON(!list_empty(&devlink_port->reporter_list));
- mutex_destroy(&devlink_port->reporters_lock);
- devlink_port->registered = false;
-}
-EXPORT_SYMBOL_GPL(devl_port_unregister);
-
-/**
- * devlink_port_unregister - Unregister devlink port
- *
- * @devlink_port: devlink port
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_port_unregister(struct devlink_port *devlink_port)
-{
- struct devlink *devlink = devlink_port->devlink;
-
- devl_lock(devlink);
- devl_port_unregister(devlink_port);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_port_unregister);
-
-static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
- struct net_device *netdev)
-{
- const struct net_device_ops *ops = netdev->netdev_ops;
-
- /* If driver registers devlink port, it should set devlink port
- * attributes accordingly so the compat functions are called
- * and the original ops are not used.
- */
- if (ops->ndo_get_phys_port_name) {
- /* Some drivers use the same set of ndos for netdevs
- * that have devlink_port registered and also for
- * those who don't. Make sure that ndo_get_phys_port_name
- * returns -EOPNOTSUPP here in case it is defined.
- * Warn if not.
- */
- char name[IFNAMSIZ];
- int err;
-
- err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
- WARN_ON(err != -EOPNOTSUPP);
- }
- if (ops->ndo_get_port_parent_id) {
- /* Some drivers use the same set of ndos for netdevs
- * that have devlink_port registered and also for
- * those who don't. Make sure that ndo_get_port_parent_id
- * returns -EOPNOTSUPP here in case it is defined.
- * Warn if not.
- */
- struct netdev_phys_item_id ppid;
- int err;
-
- err = ops->ndo_get_port_parent_id(netdev, &ppid);
- WARN_ON(err != -EOPNOTSUPP);
- }
-}
-
-static void __devlink_port_type_set(struct devlink_port *devlink_port,
- enum devlink_port_type type,
- void *type_dev)
-{
- struct net_device *netdev = type_dev;
-
- ASSERT_DEVLINK_PORT_REGISTERED(devlink_port);
-
- if (type == DEVLINK_PORT_TYPE_NOTSET) {
- devlink_port_type_warn_schedule(devlink_port);
- } else {
- devlink_port_type_warn_cancel(devlink_port);
- if (type == DEVLINK_PORT_TYPE_ETH && netdev)
- devlink_port_type_netdev_checks(devlink_port, netdev);
- }
-
- spin_lock_bh(&devlink_port->type_lock);
- devlink_port->type = type;
- switch (type) {
- case DEVLINK_PORT_TYPE_ETH:
- devlink_port->type_eth.netdev = netdev;
- if (netdev) {
- ASSERT_RTNL();
- devlink_port->type_eth.ifindex = netdev->ifindex;
- BUILD_BUG_ON(sizeof(devlink_port->type_eth.ifname) !=
- sizeof(netdev->name));
- strcpy(devlink_port->type_eth.ifname, netdev->name);
- }
- break;
- case DEVLINK_PORT_TYPE_IB:
- devlink_port->type_ib.ibdev = type_dev;
- break;
- default:
- break;
- }
- spin_unlock_bh(&devlink_port->type_lock);
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
-}
-
-/**
- * devlink_port_type_eth_set - Set port type to Ethernet
- *
- * @devlink_port: devlink port
- *
- * If driver is calling this, most likely it is doing something wrong.
- */
-void devlink_port_type_eth_set(struct devlink_port *devlink_port)
-{
- dev_warn(devlink_port->devlink->dev,
- "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
- devlink_port->index);
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, NULL);
-}
-EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
-
-/**
- * devlink_port_type_ib_set - Set port type to InfiniBand
- *
- * @devlink_port: devlink port
- * @ibdev: related IB device
- */
-void devlink_port_type_ib_set(struct devlink_port *devlink_port,
- struct ib_device *ibdev)
-{
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
-}
-EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
-
-/**
- * devlink_port_type_clear - Clear port type
- *
- * @devlink_port: devlink port
- *
- * If driver is calling this for clearing Ethernet type, most likely
- * it is doing something wrong.
- */
-void devlink_port_type_clear(struct devlink_port *devlink_port)
-{
- if (devlink_port->type == DEVLINK_PORT_TYPE_ETH)
- dev_warn(devlink_port->devlink->dev,
- "devlink port type for port %d cleared without a software interface reference, device type not supported by the kernel?\n",
- devlink_port->index);
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
-}
-EXPORT_SYMBOL_GPL(devlink_port_type_clear);
-
-static int devlink_netdevice_event(struct notifier_block *nb,
- unsigned long event, void *ptr)
-{
- struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
- struct devlink_port *devlink_port = netdev->devlink_port;
- struct devlink *devlink;
-
- devlink = container_of(nb, struct devlink, netdevice_nb);
-
- if (!devlink_port || devlink_port->devlink != devlink)
- return NOTIFY_OK;
-
- switch (event) {
- case NETDEV_POST_INIT:
- /* Set the type but not netdev pointer. It is going to be set
- * later on by NETDEV_REGISTER event. Happens once during
- * netdevice register
- */
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH,
- NULL);
- break;
- case NETDEV_REGISTER:
- case NETDEV_CHANGENAME:
- /* Set the netdev on top of previously set type. Note this
- * event happens also during net namespace change so here
- * we take into account netdev pointer appearing in this
- * namespace.
- */
- __devlink_port_type_set(devlink_port, devlink_port->type,
- netdev);
- break;
- case NETDEV_UNREGISTER:
- /* Clear netdev pointer, but not the type. This event happens
- * also during net namespace change so we need to clear
- * pointer to netdev that is going to another net namespace.
- */
- __devlink_port_type_set(devlink_port, devlink_port->type,
- NULL);
- break;
- case NETDEV_PRE_UNINIT:
- /* Clear the type and the netdev pointer. Happens one during
- * netdevice unregister.
- */
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET,
- NULL);
- break;
- }
-
- return NOTIFY_OK;
-}
-
-static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
- enum devlink_port_flavour flavour)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
-
- devlink_port->attrs_set = true;
- attrs->flavour = flavour;
- if (attrs->switch_id.id_len) {
- devlink_port->switch_port = true;
- if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
- attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
- } else {
- devlink_port->switch_port = false;
- }
- return 0;
-}
-
-/**
- * devlink_port_attrs_set - Set port attributes
- *
- * @devlink_port: devlink port
- * @attrs: devlink port attrs
- */
-void devlink_port_attrs_set(struct devlink_port *devlink_port,
- struct devlink_port_attrs *attrs)
-{
- int ret;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- devlink_port->attrs = *attrs;
- ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
- if (ret)
- return;
- WARN_ON(attrs->splittable && attrs->split);
-}
-EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
-
-/**
- * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
- *
- * @devlink_port: devlink port
- * @controller: associated controller number for the devlink port instance
- * @pf: associated PF for the devlink port instance
- * @external: indicates if the port is for an external controller
- */
-void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
- u16 pf, bool external)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
- int ret;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- ret = __devlink_port_attrs_set(devlink_port,
- DEVLINK_PORT_FLAVOUR_PCI_PF);
- if (ret)
- return;
- attrs->pci_pf.controller = controller;
- attrs->pci_pf.pf = pf;
- attrs->pci_pf.external = external;
-}
-EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
-
-/**
- * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
- *
- * @devlink_port: devlink port
- * @controller: associated controller number for the devlink port instance
- * @pf: associated PF for the devlink port instance
- * @vf: associated VF of a PF for the devlink port instance
- * @external: indicates if the port is for an external controller
- */
-void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
- u16 pf, u16 vf, bool external)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
- int ret;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- ret = __devlink_port_attrs_set(devlink_port,
- DEVLINK_PORT_FLAVOUR_PCI_VF);
- if (ret)
- return;
- attrs->pci_vf.controller = controller;
- attrs->pci_vf.pf = pf;
- attrs->pci_vf.vf = vf;
- attrs->pci_vf.external = external;
-}
-EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
-
-/**
- * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
- *
- * @devlink_port: devlink port
- * @controller: associated controller number for the devlink port instance
- * @pf: associated PF for the devlink port instance
- * @sf: associated SF of a PF for the devlink port instance
- * @external: indicates if the port is for an external controller
- */
-void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
- u16 pf, u32 sf, bool external)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
- int ret;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- ret = __devlink_port_attrs_set(devlink_port,
- DEVLINK_PORT_FLAVOUR_PCI_SF);
- if (ret)
- return;
- attrs->pci_sf.controller = controller;
- attrs->pci_sf.pf = pf;
- attrs->pci_sf.sf = sf;
- attrs->pci_sf.external = external;
-}
-EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
-
-/**
- * devl_rate_node_create - create devlink rate node
- * @devlink: devlink instance
- * @priv: driver private data
- * @node_name: name of the resulting node
- * @parent: parent devlink_rate struct
- *
- * Create devlink rate object of type node
- */
-struct devlink_rate *
-devl_rate_node_create(struct devlink *devlink, void *priv, char *node_name,
- struct devlink_rate *parent)
-{
- struct devlink_rate *rate_node;
-
- rate_node = devlink_rate_node_get_by_name(devlink, node_name);
- if (!IS_ERR(rate_node))
- return ERR_PTR(-EEXIST);
-
- rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
- if (!rate_node)
- return ERR_PTR(-ENOMEM);
-
- if (parent) {
- rate_node->parent = parent;
- refcount_inc(&rate_node->parent->refcnt);
- }
-
- rate_node->type = DEVLINK_RATE_TYPE_NODE;
- rate_node->devlink = devlink;
- rate_node->priv = priv;
-
- rate_node->name = kstrdup(node_name, GFP_KERNEL);
- if (!rate_node->name) {
- kfree(rate_node);
- return ERR_PTR(-ENOMEM);
- }
-
- refcount_set(&rate_node->refcnt, 1);
- list_add(&rate_node->list, &devlink->rate_list);
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
- return rate_node;
-}
-EXPORT_SYMBOL_GPL(devl_rate_node_create);
-
-/**
- * devl_rate_leaf_create - create devlink rate leaf
- * @devlink_port: devlink port object to create rate object on
- * @priv: driver private data
- * @parent: parent devlink_rate struct
- *
- * Create devlink rate object of type leaf on provided @devlink_port.
- */
-int devl_rate_leaf_create(struct devlink_port *devlink_port, void *priv,
- struct devlink_rate *parent)
-{
- struct devlink *devlink = devlink_port->devlink;
- struct devlink_rate *devlink_rate;
-
- devl_assert_locked(devlink_port->devlink);
-
- if (WARN_ON(devlink_port->devlink_rate))
- return -EBUSY;
-
- devlink_rate = kzalloc(sizeof(*devlink_rate), GFP_KERNEL);
- if (!devlink_rate)
- return -ENOMEM;
-
- if (parent) {
- devlink_rate->parent = parent;
- refcount_inc(&devlink_rate->parent->refcnt);
- }
-
- devlink_rate->type = DEVLINK_RATE_TYPE_LEAF;
- devlink_rate->devlink = devlink;
- devlink_rate->devlink_port = devlink_port;
- devlink_rate->priv = priv;
- list_add_tail(&devlink_rate->list, &devlink->rate_list);
- devlink_port->devlink_rate = devlink_rate;
- devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_rate_leaf_create);
-
-/**
- * devl_rate_leaf_destroy - destroy devlink rate leaf
- *
- * @devlink_port: devlink port linked to the rate object
- *
- * Destroy the devlink rate object of type leaf on provided @devlink_port.
- */
-void devl_rate_leaf_destroy(struct devlink_port *devlink_port)
-{
- struct devlink_rate *devlink_rate = devlink_port->devlink_rate;
-
- devl_assert_locked(devlink_port->devlink);
- if (!devlink_rate)
- return;
-
- devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_DEL);
- if (devlink_rate->parent)
- refcount_dec(&devlink_rate->parent->refcnt);
- list_del(&devlink_rate->list);
- devlink_port->devlink_rate = NULL;
- kfree(devlink_rate);
-}
-EXPORT_SYMBOL_GPL(devl_rate_leaf_destroy);
-
-/**
- * devl_rate_nodes_destroy - destroy all devlink rate nodes on device
- * @devlink: devlink instance
- *
- * Unset parent for all rate objects and destroy all rate nodes
- * on specified device.
- */
-void devl_rate_nodes_destroy(struct devlink *devlink)
-{
- static struct devlink_rate *devlink_rate, *tmp;
- const struct devlink_ops *ops = devlink->ops;
-
- devl_assert_locked(devlink);
-
- list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
- if (!devlink_rate->parent)
- continue;
-
- refcount_dec(&devlink_rate->parent->refcnt);
- if (devlink_rate_is_leaf(devlink_rate))
- ops->rate_leaf_parent_set(devlink_rate, NULL, devlink_rate->priv,
- NULL, NULL);
- else if (devlink_rate_is_node(devlink_rate))
- ops->rate_node_parent_set(devlink_rate, NULL, devlink_rate->priv,
- NULL, NULL);
- }
- list_for_each_entry_safe(devlink_rate, tmp, &devlink->rate_list, list) {
- if (devlink_rate_is_node(devlink_rate)) {
- ops->rate_node_del(devlink_rate, devlink_rate->priv, NULL);
- list_del(&devlink_rate->list);
- kfree(devlink_rate->name);
- kfree(devlink_rate);
- }
- }
-}
-EXPORT_SYMBOL_GPL(devl_rate_nodes_destroy);
-
-/**
- * devlink_port_linecard_set - Link port with a linecard
- *
- * @devlink_port: devlink port
- * @linecard: devlink linecard
- */
-void devlink_port_linecard_set(struct devlink_port *devlink_port,
- struct devlink_linecard *linecard)
-{
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- devlink_port->linecard = linecard;
-}
-EXPORT_SYMBOL_GPL(devlink_port_linecard_set);
-
-static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
- char *name, size_t len)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
- int n = 0;
-
- if (!devlink_port->attrs_set)
- return -EOPNOTSUPP;
-
- switch (attrs->flavour) {
- case DEVLINK_PORT_FLAVOUR_PHYSICAL:
- if (devlink_port->linecard)
- n = snprintf(name, len, "l%u",
- devlink_port->linecard->index);
- if (n < len)
- n += snprintf(name + n, len - n, "p%u",
- attrs->phys.port_number);
- if (n < len && attrs->split)
- n += snprintf(name + n, len - n, "s%u",
- attrs->phys.split_subport_number);
- break;
- case DEVLINK_PORT_FLAVOUR_CPU:
- case DEVLINK_PORT_FLAVOUR_DSA:
- case DEVLINK_PORT_FLAVOUR_UNUSED:
- /* As CPU and DSA ports do not have a netdevice associated
- * case should not ever happen.
- */
- WARN_ON(1);
- return -EINVAL;
- case DEVLINK_PORT_FLAVOUR_PCI_PF:
- if (attrs->pci_pf.external) {
- n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
- if (n >= len)
- return -EINVAL;
- len -= n;
- name += n;
- }
- n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
- break;
- case DEVLINK_PORT_FLAVOUR_PCI_VF:
- if (attrs->pci_vf.external) {
- n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
- if (n >= len)
- return -EINVAL;
- len -= n;
- name += n;
- }
- n = snprintf(name, len, "pf%uvf%u",
- attrs->pci_vf.pf, attrs->pci_vf.vf);
- break;
- case DEVLINK_PORT_FLAVOUR_PCI_SF:
- if (attrs->pci_sf.external) {
- n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
- if (n >= len)
- return -EINVAL;
- len -= n;
- name += n;
- }
- n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
- attrs->pci_sf.sf);
- break;
- case DEVLINK_PORT_FLAVOUR_VIRTUAL:
- return -EOPNOTSUPP;
- }
-
- if (n >= len)
- return -EINVAL;
-
- return 0;
-}
-
-static int devlink_linecard_types_init(struct devlink_linecard *linecard)
-{
- struct devlink_linecard_type *linecard_type;
- unsigned int count;
- int i;
-
- count = linecard->ops->types_count(linecard, linecard->priv);
- linecard->types = kmalloc_array(count, sizeof(*linecard_type),
- GFP_KERNEL);
- if (!linecard->types)
- return -ENOMEM;
- linecard->types_count = count;
-
- for (i = 0; i < count; i++) {
- linecard_type = &linecard->types[i];
- linecard->ops->types_get(linecard, linecard->priv, i,
- &linecard_type->type,
- &linecard_type->priv);
- }
- return 0;
-}
-
-static void devlink_linecard_types_fini(struct devlink_linecard *linecard)
-{
- kfree(linecard->types);
-}
-
-/**
- * devlink_linecard_create - Create devlink linecard
- *
- * @devlink: devlink
- * @linecard_index: driver-specific numerical identifier of the linecard
- * @ops: linecards ops
- * @priv: user priv pointer
- *
- * Create devlink linecard instance with provided linecard index.
- * Caller can use any indexing, even hw-related one.
- *
- * Return: Line card structure or an ERR_PTR() encoded error code.
- */
-struct devlink_linecard *
-devlink_linecard_create(struct devlink *devlink, unsigned int linecard_index,
- const struct devlink_linecard_ops *ops, void *priv)
-{
- struct devlink_linecard *linecard;
- int err;
-
- if (WARN_ON(!ops || !ops->provision || !ops->unprovision ||
- !ops->types_count || !ops->types_get))
- return ERR_PTR(-EINVAL);
-
- mutex_lock(&devlink->linecards_lock);
- if (devlink_linecard_index_exists(devlink, linecard_index)) {
- mutex_unlock(&devlink->linecards_lock);
- return ERR_PTR(-EEXIST);
- }
-
- linecard = kzalloc(sizeof(*linecard), GFP_KERNEL);
- if (!linecard) {
- mutex_unlock(&devlink->linecards_lock);
- return ERR_PTR(-ENOMEM);
- }
-
- linecard->devlink = devlink;
- linecard->index = linecard_index;
- linecard->ops = ops;
- linecard->priv = priv;
- linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
- mutex_init(&linecard->state_lock);
-
- err = devlink_linecard_types_init(linecard);
- if (err) {
- mutex_destroy(&linecard->state_lock);
- kfree(linecard);
- mutex_unlock(&devlink->linecards_lock);
- return ERR_PTR(err);
- }
-
- list_add_tail(&linecard->list, &devlink->linecard_list);
- refcount_set(&linecard->refcount, 1);
- mutex_unlock(&devlink->linecards_lock);
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- return linecard;
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_create);
-
-/**
- * devlink_linecard_destroy - Destroy devlink linecard
- *
- * @linecard: devlink linecard
- */
-void devlink_linecard_destroy(struct devlink_linecard *linecard)
-{
- struct devlink *devlink = linecard->devlink;
-
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_DEL);
- mutex_lock(&devlink->linecards_lock);
- list_del(&linecard->list);
- devlink_linecard_types_fini(linecard);
- mutex_unlock(&devlink->linecards_lock);
- devlink_linecard_put(linecard);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_destroy);
-
-/**
- * devlink_linecard_provision_set - Set provisioning on linecard
- *
- * @linecard: devlink linecard
- * @type: linecard type
- *
- * This is either called directly from the provision() op call or
- * as a result of the provision() op call asynchronously.
- */
-void devlink_linecard_provision_set(struct devlink_linecard *linecard,
- const char *type)
-{
- mutex_lock(&linecard->state_lock);
- WARN_ON(linecard->type && strcmp(linecard->type, type));
- linecard->state = DEVLINK_LINECARD_STATE_PROVISIONED;
- linecard->type = type;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_provision_set);
-
-/**
- * devlink_linecard_provision_clear - Clear provisioning on linecard
- *
- * @linecard: devlink linecard
- *
- * This is either called directly from the unprovision() op call or
- * as a result of the unprovision() op call asynchronously.
- */
-void devlink_linecard_provision_clear(struct devlink_linecard *linecard)
-{
- mutex_lock(&linecard->state_lock);
- WARN_ON(linecard->nested_devlink);
- linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
- linecard->type = NULL;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_provision_clear);
-
-/**
- * devlink_linecard_provision_fail - Fail provisioning on linecard
- *
- * @linecard: devlink linecard
- *
- * This is either called directly from the provision() op call or
- * as a result of the provision() op call asynchronously.
- */
-void devlink_linecard_provision_fail(struct devlink_linecard *linecard)
-{
- mutex_lock(&linecard->state_lock);
- WARN_ON(linecard->nested_devlink);
- linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING_FAILED;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_provision_fail);
-
-/**
- * devlink_linecard_activate - Set linecard active
- *
- * @linecard: devlink linecard
- */
-void devlink_linecard_activate(struct devlink_linecard *linecard)
-{
- mutex_lock(&linecard->state_lock);
- WARN_ON(linecard->state != DEVLINK_LINECARD_STATE_PROVISIONED);
- linecard->state = DEVLINK_LINECARD_STATE_ACTIVE;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_activate);
-
-/**
- * devlink_linecard_deactivate - Set linecard inactive
- *
- * @linecard: devlink linecard
- */
-void devlink_linecard_deactivate(struct devlink_linecard *linecard)
-{
- mutex_lock(&linecard->state_lock);
- switch (linecard->state) {
- case DEVLINK_LINECARD_STATE_ACTIVE:
- linecard->state = DEVLINK_LINECARD_STATE_PROVISIONED;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- break;
- case DEVLINK_LINECARD_STATE_UNPROVISIONING:
- /* Line card is being deactivated as part
- * of unprovisioning flow.
- */
- break;
- default:
- WARN_ON(1);
- break;
- }
- mutex_unlock(&linecard->state_lock);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_deactivate);
-
-/**
- * devlink_linecard_nested_dl_set - Attach/detach nested devlink
- * instance to linecard.
- *
- * @linecard: devlink linecard
- * @nested_devlink: devlink instance to attach or NULL to detach
- */
-void devlink_linecard_nested_dl_set(struct devlink_linecard *linecard,
- struct devlink *nested_devlink)
-{
- mutex_lock(&linecard->state_lock);
- linecard->nested_devlink = nested_devlink;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_nested_dl_set);
-
-int devl_sb_register(struct devlink *devlink, unsigned int sb_index,
- u32 size, u16 ingress_pools_count,
- u16 egress_pools_count, u16 ingress_tc_count,
- u16 egress_tc_count)
-{
- struct devlink_sb *devlink_sb;
-
- lockdep_assert_held(&devlink->lock);
-
- if (devlink_sb_index_exists(devlink, sb_index))
- return -EEXIST;
-
- devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
- if (!devlink_sb)
- return -ENOMEM;
- devlink_sb->index = sb_index;
- devlink_sb->size = size;
- devlink_sb->ingress_pools_count = ingress_pools_count;
- devlink_sb->egress_pools_count = egress_pools_count;
- devlink_sb->ingress_tc_count = ingress_tc_count;
- devlink_sb->egress_tc_count = egress_tc_count;
- list_add_tail(&devlink_sb->list, &devlink->sb_list);
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_sb_register);
-
-int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
- u32 size, u16 ingress_pools_count,
- u16 egress_pools_count, u16 ingress_tc_count,
- u16 egress_tc_count)
-{
- int err;
-
- devl_lock(devlink);
- err = devl_sb_register(devlink, sb_index, size, ingress_pools_count,
- egress_pools_count, ingress_tc_count,
- egress_tc_count);
- devl_unlock(devlink);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_sb_register);
-
-void devl_sb_unregister(struct devlink *devlink, unsigned int sb_index)
-{
- struct devlink_sb *devlink_sb;
-
- lockdep_assert_held(&devlink->lock);
-
- devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
- WARN_ON(!devlink_sb);
- list_del(&devlink_sb->list);
- kfree(devlink_sb);
-}
-EXPORT_SYMBOL_GPL(devl_sb_unregister);
-
-void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
-{
- devl_lock(devlink);
- devl_sb_unregister(devlink, sb_index);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_sb_unregister);
-
-/**
- * devl_dpipe_headers_register - register dpipe headers
- *
- * @devlink: devlink
- * @dpipe_headers: dpipe header array
- *
- * Register the headers supported by hardware.
- */
-void devl_dpipe_headers_register(struct devlink *devlink,
- struct devlink_dpipe_headers *dpipe_headers)
-{
- lockdep_assert_held(&devlink->lock);
-
- devlink->dpipe_headers = dpipe_headers;
-}
-EXPORT_SYMBOL_GPL(devl_dpipe_headers_register);
-
-/**
- * devl_dpipe_headers_unregister - unregister dpipe headers
- *
- * @devlink: devlink
- *
- * Unregister the headers supported by hardware.
- */
-void devl_dpipe_headers_unregister(struct devlink *devlink)
-{
- lockdep_assert_held(&devlink->lock);
-
- devlink->dpipe_headers = NULL;
-}
-EXPORT_SYMBOL_GPL(devl_dpipe_headers_unregister);
-
-/**
- * devlink_dpipe_table_counter_enabled - check if counter allocation
- * required
- * @devlink: devlink
- * @table_name: tables name
- *
- * Used by driver to check if counter allocation is required.
- * After counter allocation is turned on the table entries
- * are updated to include counter statistics.
- *
- * After that point on the driver must respect the counter
- * state so that each entry added to the table is added
- * with a counter.
- */
-bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
- const char *table_name)
-{
- struct devlink_dpipe_table *table;
- bool enabled;
-
- rcu_read_lock();
- table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name, devlink);
- enabled = false;
- if (table)
- enabled = table->counters_enabled;
- rcu_read_unlock();
- return enabled;
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
-
-/**
- * devl_dpipe_table_register - register dpipe table
- *
- * @devlink: devlink
- * @table_name: table name
- * @table_ops: table ops
- * @priv: priv
- * @counter_control_extern: external control for counters
- */
-int devl_dpipe_table_register(struct devlink *devlink,
- const char *table_name,
- struct devlink_dpipe_table_ops *table_ops,
- void *priv, bool counter_control_extern)
-{
- struct devlink_dpipe_table *table;
-
- lockdep_assert_held(&devlink->lock);
-
- if (WARN_ON(!table_ops->size_get))
- return -EINVAL;
-
- if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
- devlink))
- return -EEXIST;
-
- table = kzalloc(sizeof(*table), GFP_KERNEL);
- if (!table)
- return -ENOMEM;
-
- table->name = table_name;
- table->table_ops = table_ops;
- table->priv = priv;
- table->counter_control_extern = counter_control_extern;
-
- list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_dpipe_table_register);
-
-/**
- * devl_dpipe_table_unregister - unregister dpipe table
- *
- * @devlink: devlink
- * @table_name: table name
- */
-void devl_dpipe_table_unregister(struct devlink *devlink,
- const char *table_name)
-{
- struct devlink_dpipe_table *table;
-
- lockdep_assert_held(&devlink->lock);
-
- table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name, devlink);
- if (!table)
- return;
- list_del_rcu(&table->list);
- kfree_rcu(table, rcu);
-}
-EXPORT_SYMBOL_GPL(devl_dpipe_table_unregister);
-
-/**
- * devl_resource_register - devlink resource register
- *
- * @devlink: devlink
- * @resource_name: resource's name
- * @resource_size: resource's size
- * @resource_id: resource's id
- * @parent_resource_id: resource's parent id
- * @size_params: size parameters
- *
- * Generic resources should reuse the same names across drivers.
- * Please see the generic resources list at:
- * Documentation/networking/devlink/devlink-resource.rst
- */
-int devl_resource_register(struct devlink *devlink,
- const char *resource_name,
- u64 resource_size,
- u64 resource_id,
- u64 parent_resource_id,
- const struct devlink_resource_size_params *size_params)
-{
- struct devlink_resource *resource;
- struct list_head *resource_list;
- bool top_hierarchy;
-
- lockdep_assert_held(&devlink->lock);
-
- top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
-
- resource = devlink_resource_find(devlink, NULL, resource_id);
- if (resource)
- return -EINVAL;
-
- resource = kzalloc(sizeof(*resource), GFP_KERNEL);
- if (!resource)
- return -ENOMEM;
-
- if (top_hierarchy) {
- resource_list = &devlink->resource_list;
- } else {
- struct devlink_resource *parent_resource;
-
- parent_resource = devlink_resource_find(devlink, NULL,
- parent_resource_id);
- if (parent_resource) {
- resource_list = &parent_resource->resource_list;
- resource->parent = parent_resource;
- } else {
- kfree(resource);
- return -EINVAL;
- }
- }
-
- resource->name = resource_name;
- resource->size = resource_size;
- resource->size_new = resource_size;
- resource->id = resource_id;
- resource->size_valid = true;
- memcpy(&resource->size_params, size_params,
- sizeof(resource->size_params));
- INIT_LIST_HEAD(&resource->resource_list);
- list_add_tail(&resource->list, resource_list);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_resource_register);
-
-/**
- * devlink_resource_register - devlink resource register
- *
- * @devlink: devlink
- * @resource_name: resource's name
- * @resource_size: resource's size
- * @resource_id: resource's id
- * @parent_resource_id: resource's parent id
- * @size_params: size parameters
- *
- * Generic resources should reuse the same names across drivers.
- * Please see the generic resources list at:
- * Documentation/networking/devlink/devlink-resource.rst
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-int devlink_resource_register(struct devlink *devlink,
- const char *resource_name,
- u64 resource_size,
- u64 resource_id,
- u64 parent_resource_id,
- const struct devlink_resource_size_params *size_params)
-{
- int err;
-
- devl_lock(devlink);
- err = devl_resource_register(devlink, resource_name, resource_size,
- resource_id, parent_resource_id, size_params);
- devl_unlock(devlink);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_resource_register);
-
-static void devlink_resource_unregister(struct devlink *devlink,
- struct devlink_resource *resource)
-{
- struct devlink_resource *tmp, *child_resource;
-
- list_for_each_entry_safe(child_resource, tmp, &resource->resource_list,
- list) {
- devlink_resource_unregister(devlink, child_resource);
- list_del(&child_resource->list);
- kfree(child_resource);
- }
-}
-
-/**
- * devl_resources_unregister - free all resources
- *
- * @devlink: devlink
- */
-void devl_resources_unregister(struct devlink *devlink)
-{
- struct devlink_resource *tmp, *child_resource;
-
- lockdep_assert_held(&devlink->lock);
-
- list_for_each_entry_safe(child_resource, tmp, &devlink->resource_list,
- list) {
- devlink_resource_unregister(devlink, child_resource);
- list_del(&child_resource->list);
- kfree(child_resource);
- }
-}
-EXPORT_SYMBOL_GPL(devl_resources_unregister);
-
-/**
- * devlink_resources_unregister - free all resources
- *
- * @devlink: devlink
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_resources_unregister(struct devlink *devlink)
-{
- devl_lock(devlink);
- devl_resources_unregister(devlink);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_resources_unregister);
-
-/**
- * devl_resource_size_get - get and update size
- *
- * @devlink: devlink
- * @resource_id: the requested resource id
- * @p_resource_size: ptr to update
- */
-int devl_resource_size_get(struct devlink *devlink,
- u64 resource_id,
- u64 *p_resource_size)
-{
- struct devlink_resource *resource;
-
- lockdep_assert_held(&devlink->lock);
-
- resource = devlink_resource_find(devlink, NULL, resource_id);
- if (!resource)
- return -EINVAL;
- *p_resource_size = resource->size_new;
- resource->size = resource->size_new;
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_resource_size_get);
-
-/**
- * devl_dpipe_table_resource_set - set the resource id
- *
- * @devlink: devlink
- * @table_name: table name
- * @resource_id: resource id
- * @resource_units: number of resource's units consumed per table's entry
- */
-int devl_dpipe_table_resource_set(struct devlink *devlink,
- const char *table_name, u64 resource_id,
- u64 resource_units)
-{
- struct devlink_dpipe_table *table;
-
- table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name, devlink);
- if (!table)
- return -EINVAL;
-
- table->resource_id = resource_id;
- table->resource_units = resource_units;
- table->resource_valid = true;
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_dpipe_table_resource_set);
-
-/**
- * devl_resource_occ_get_register - register occupancy getter
- *
- * @devlink: devlink
- * @resource_id: resource id
- * @occ_get: occupancy getter callback
- * @occ_get_priv: occupancy getter callback priv
- */
-void devl_resource_occ_get_register(struct devlink *devlink,
- u64 resource_id,
- devlink_resource_occ_get_t *occ_get,
- void *occ_get_priv)
-{
- struct devlink_resource *resource;
-
- lockdep_assert_held(&devlink->lock);
-
- resource = devlink_resource_find(devlink, NULL, resource_id);
- if (WARN_ON(!resource))
- return;
- WARN_ON(resource->occ_get);
-
- resource->occ_get = occ_get;
- resource->occ_get_priv = occ_get_priv;
-}
-EXPORT_SYMBOL_GPL(devl_resource_occ_get_register);
-
-/**
- * devlink_resource_occ_get_register - register occupancy getter
- *
- * @devlink: devlink
- * @resource_id: resource id
- * @occ_get: occupancy getter callback
- * @occ_get_priv: occupancy getter callback priv
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_resource_occ_get_register(struct devlink *devlink,
- u64 resource_id,
- devlink_resource_occ_get_t *occ_get,
- void *occ_get_priv)
-{
- devl_lock(devlink);
- devl_resource_occ_get_register(devlink, resource_id,
- occ_get, occ_get_priv);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
-
-/**
- * devl_resource_occ_get_unregister - unregister occupancy getter
- *
- * @devlink: devlink
- * @resource_id: resource id
- */
-void devl_resource_occ_get_unregister(struct devlink *devlink,
- u64 resource_id)
-{
- struct devlink_resource *resource;
-
- lockdep_assert_held(&devlink->lock);
-
- resource = devlink_resource_find(devlink, NULL, resource_id);
- if (WARN_ON(!resource))
- return;
- WARN_ON(!resource->occ_get);
-
- resource->occ_get = NULL;
- resource->occ_get_priv = NULL;
-}
-EXPORT_SYMBOL_GPL(devl_resource_occ_get_unregister);
-
-/**
- * devlink_resource_occ_get_unregister - unregister occupancy getter
- *
- * @devlink: devlink
- * @resource_id: resource id
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_resource_occ_get_unregister(struct devlink *devlink,
- u64 resource_id)
-{
- devl_lock(devlink);
- devl_resource_occ_get_unregister(devlink, resource_id);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
-
-static int devlink_param_verify(const struct devlink_param *param)
-{
- if (!param || !param->name || !param->supported_cmodes)
- return -EINVAL;
- if (param->generic)
- return devlink_param_generic_verify(param);
- else
- return devlink_param_driver_verify(param);
-}
-
-/**
- * devlink_params_register - register configuration parameters
- *
- * @devlink: devlink
- * @params: configuration parameters array
- * @params_count: number of parameters provided
- *
- * Register the configuration parameters supported by the driver.
- */
-int devlink_params_register(struct devlink *devlink,
- const struct devlink_param *params,
- size_t params_count)
-{
- const struct devlink_param *param = params;
- int i, err;
-
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- for (i = 0; i < params_count; i++, param++) {
- err = devlink_param_register(devlink, param);
- if (err)
- goto rollback;
- }
- return 0;
-
-rollback:
- if (!i)
- return err;
-
- for (param--; i > 0; i--, param--)
- devlink_param_unregister(devlink, param);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_params_register);
-
-/**
- * devlink_params_unregister - unregister configuration parameters
- * @devlink: devlink
- * @params: configuration parameters to unregister
- * @params_count: number of parameters provided
- */
-void devlink_params_unregister(struct devlink *devlink,
- const struct devlink_param *params,
- size_t params_count)
-{
- const struct devlink_param *param = params;
- int i;
-
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- for (i = 0; i < params_count; i++, param++)
- devlink_param_unregister(devlink, param);
-}
-EXPORT_SYMBOL_GPL(devlink_params_unregister);
-
-/**
- * devlink_param_register - register one configuration parameter
- *
- * @devlink: devlink
- * @param: one configuration parameter
- *
- * Register the configuration parameter supported by the driver.
- * Return: returns 0 on successful registration or error code otherwise.
- */
-int devlink_param_register(struct devlink *devlink,
- const struct devlink_param *param)
-{
- struct devlink_param_item *param_item;
-
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- WARN_ON(devlink_param_verify(param));
- WARN_ON(devlink_param_find_by_name(&devlink->param_list, param->name));
-
- if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
- WARN_ON(param->get || param->set);
- else
- WARN_ON(!param->get || !param->set);
-
- param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
- if (!param_item)
- return -ENOMEM;
-
- param_item->param = param;
-
- list_add_tail(¶m_item->list, &devlink->param_list);
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_param_register);
-
-/**
- * devlink_param_unregister - unregister one configuration parameter
- * @devlink: devlink
- * @param: configuration parameter to unregister
- */
-void devlink_param_unregister(struct devlink *devlink,
- const struct devlink_param *param)
-{
- struct devlink_param_item *param_item;
-
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- param_item =
- devlink_param_find_by_name(&devlink->param_list, param->name);
- WARN_ON(!param_item);
- list_del(¶m_item->list);
- kfree(param_item);
-}
-EXPORT_SYMBOL_GPL(devlink_param_unregister);
-
-/**
- * devlink_param_driverinit_value_get - get configuration parameter
- * value for driver initializing
- *
- * @devlink: devlink
- * @param_id: parameter ID
- * @init_val: value of parameter in driverinit configuration mode
- *
- * This function should be used by the driver to get driverinit
- * configuration for initialization after reload command.
- */
-int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
- union devlink_param_value *init_val)
-{
- struct devlink_param_item *param_item;
-
- if (!devlink_reload_supported(devlink->ops))
- return -EOPNOTSUPP;
-
- param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
- if (!param_item)
- return -EINVAL;
-
- if (!param_item->driverinit_value_valid ||
- !devlink_param_cmode_is_supported(param_item->param,
- DEVLINK_PARAM_CMODE_DRIVERINIT))
- return -EOPNOTSUPP;
-
- if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
- strcpy(init_val->vstr, param_item->driverinit_value.vstr);
- else
- *init_val = param_item->driverinit_value;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
-
-/**
- * devlink_param_driverinit_value_set - set value of configuration
- * parameter for driverinit
- * configuration mode
- *
- * @devlink: devlink
- * @param_id: parameter ID
- * @init_val: value of parameter to set for driverinit configuration mode
- *
- * This function should be used by the driver to set driverinit
- * configuration mode default value.
- */
-int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
- union devlink_param_value init_val)
-{
- struct devlink_param_item *param_item;
-
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
- if (!param_item)
- return -EINVAL;
-
- if (!devlink_param_cmode_is_supported(param_item->param,
- DEVLINK_PARAM_CMODE_DRIVERINIT))
- return -EOPNOTSUPP;
-
- if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
- strcpy(param_item->driverinit_value.vstr, init_val.vstr);
- else
- param_item->driverinit_value = init_val;
- param_item->driverinit_value_valid = true;
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
-
-/**
- * devlink_param_value_changed - notify devlink on a parameter's value
- * change. Should be called by the driver
- * right after the change.
- *
- * @devlink: devlink
- * @param_id: parameter ID
- *
- * This function should be used by the driver to notify devlink on value
- * change, excluding driverinit configuration mode.
- * For driverinit configuration mode driver should use the function
- */
-void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
-{
- struct devlink_param_item *param_item;
-
- param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
- WARN_ON(!param_item);
-
- devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
-}
-EXPORT_SYMBOL_GPL(devlink_param_value_changed);
-
-/**
- * devl_region_create - create a new address region
- *
- * @devlink: devlink
- * @ops: region operations and name
- * @region_max_snapshots: Maximum supported number of snapshots for region
- * @region_size: size of region
- */
-struct devlink_region *devl_region_create(struct devlink *devlink,
- const struct devlink_region_ops *ops,
- u32 region_max_snapshots,
- u64 region_size)
-{
- struct devlink_region *region;
-
- devl_assert_locked(devlink);
-
- if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
- return ERR_PTR(-EINVAL);
-
- if (devlink_region_get_by_name(devlink, ops->name))
- return ERR_PTR(-EEXIST);
-
- region = kzalloc(sizeof(*region), GFP_KERNEL);
- if (!region)
- return ERR_PTR(-ENOMEM);
-
- region->devlink = devlink;
- region->max_snapshots = region_max_snapshots;
- region->ops = ops;
- region->size = region_size;
- INIT_LIST_HEAD(®ion->snapshot_list);
- mutex_init(®ion->snapshot_lock);
- list_add_tail(®ion->list, &devlink->region_list);
- devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
-
- return region;
-}
-EXPORT_SYMBOL_GPL(devl_region_create);
-
-/**
- * devlink_region_create - create a new address region
- *
- * @devlink: devlink
- * @ops: region operations and name
- * @region_max_snapshots: Maximum supported number of snapshots for region
- * @region_size: size of region
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-struct devlink_region *
-devlink_region_create(struct devlink *devlink,
- const struct devlink_region_ops *ops,
- u32 region_max_snapshots, u64 region_size)
-{
- struct devlink_region *region;
-
- devl_lock(devlink);
- region = devl_region_create(devlink, ops, region_max_snapshots,
- region_size);
- devl_unlock(devlink);
- return region;
-}
-EXPORT_SYMBOL_GPL(devlink_region_create);
-
-/**
- * devlink_port_region_create - create a new address region for a port
- *
- * @port: devlink port
- * @ops: region operations and name
- * @region_max_snapshots: Maximum supported number of snapshots for region
- * @region_size: size of region
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-struct devlink_region *
-devlink_port_region_create(struct devlink_port *port,
- const struct devlink_port_region_ops *ops,
- u32 region_max_snapshots, u64 region_size)
-{
- struct devlink *devlink = port->devlink;
- struct devlink_region *region;
- int err = 0;
-
- ASSERT_DEVLINK_PORT_INITIALIZED(port);
-
- if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
- return ERR_PTR(-EINVAL);
-
- devl_lock(devlink);
-
- if (devlink_port_region_get_by_name(port, ops->name)) {
- err = -EEXIST;
- goto unlock;
- }
-
- region = kzalloc(sizeof(*region), GFP_KERNEL);
- if (!region) {
- err = -ENOMEM;
- goto unlock;
- }
-
- region->devlink = devlink;
- region->port = port;
- region->max_snapshots = region_max_snapshots;
- region->port_ops = ops;
- region->size = region_size;
- INIT_LIST_HEAD(®ion->snapshot_list);
- mutex_init(®ion->snapshot_lock);
- list_add_tail(®ion->list, &port->region_list);
- devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
-
- devl_unlock(devlink);
- return region;
-
-unlock:
- devl_unlock(devlink);
- return ERR_PTR(err);
-}
-EXPORT_SYMBOL_GPL(devlink_port_region_create);
-
-/**
- * devl_region_destroy - destroy address region
- *
- * @region: devlink region to destroy
- */
-void devl_region_destroy(struct devlink_region *region)
-{
- struct devlink *devlink = region->devlink;
- struct devlink_snapshot *snapshot, *ts;
-
- devl_assert_locked(devlink);
-
- /* Free all snapshots of region */
- mutex_lock(®ion->snapshot_lock);
- list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list)
- devlink_region_snapshot_del(region, snapshot);
- mutex_unlock(®ion->snapshot_lock);
-
- list_del(®ion->list);
- mutex_destroy(®ion->snapshot_lock);
-
- devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
- kfree(region);
-}
-EXPORT_SYMBOL_GPL(devl_region_destroy);
-
-/**
- * devlink_region_destroy - destroy address region
- *
- * @region: devlink region to destroy
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_region_destroy(struct devlink_region *region)
-{
- struct devlink *devlink = region->devlink;
-
- devl_lock(devlink);
- devl_region_destroy(region);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_region_destroy);
-
-/**
- * devlink_region_snapshot_id_get - get snapshot ID
- *
- * This callback should be called when adding a new snapshot,
- * Driver should use the same id for multiple snapshots taken
- * on multiple regions at the same time/by the same trigger.
- *
- * The caller of this function must use devlink_region_snapshot_id_put
- * when finished creating regions using this id.
- *
- * Returns zero on success, or a negative error code on failure.
- *
- * @devlink: devlink
- * @id: storage to return id
- */
-int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
-{
- return __devlink_region_snapshot_id_get(devlink, id);
-}
-EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
-
-/**
- * devlink_region_snapshot_id_put - put snapshot ID reference
- *
- * This should be called by a driver after finishing creating snapshots
- * with an id. Doing so ensures that the ID can later be released in the
- * event that all snapshots using it have been destroyed.
- *
- * @devlink: devlink
- * @id: id to release reference on
- */
-void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
-{
- __devlink_snapshot_id_decrement(devlink, id);
-}
-EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
-
-/**
- * devlink_region_snapshot_create - create a new snapshot
- * This will add a new snapshot of a region. The snapshot
- * will be stored on the region struct and can be accessed
- * from devlink. This is useful for future analyses of snapshots.
- * Multiple snapshots can be created on a region.
- * The @snapshot_id should be obtained using the getter function.
- *
- * @region: devlink region of the snapshot
- * @data: snapshot data
- * @snapshot_id: snapshot id to be created
- */
-int devlink_region_snapshot_create(struct devlink_region *region,
- u8 *data, u32 snapshot_id)
-{
- int err;
-
- mutex_lock(®ion->snapshot_lock);
- err = __devlink_region_snapshot_create(region, data, snapshot_id);
- mutex_unlock(®ion->snapshot_lock);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
-
-#define DEVLINK_TRAP(_id, _type) \
- { \
- .type = DEVLINK_TRAP_TYPE_##_type, \
- .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
- .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
- }
-
-static const struct devlink_trap devlink_trap_generic[] = {
- DEVLINK_TRAP(SMAC_MC, DROP),
- DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
- DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
- DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
- DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
- DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
- DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
- DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
- DEVLINK_TRAP(TAIL_DROP, DROP),
- DEVLINK_TRAP(NON_IP_PACKET, DROP),
- DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
- DEVLINK_TRAP(DIP_LB, DROP),
- DEVLINK_TRAP(SIP_MC, DROP),
- DEVLINK_TRAP(SIP_LB, DROP),
- DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
- DEVLINK_TRAP(IPV4_SIP_BC, DROP),
- DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
- DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
- DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
- DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
- DEVLINK_TRAP(RPF, EXCEPTION),
- DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
- DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
- DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
- DEVLINK_TRAP(NON_ROUTABLE, DROP),
- DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
- DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
- DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
- DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
- DEVLINK_TRAP(STP, CONTROL),
- DEVLINK_TRAP(LACP, CONTROL),
- DEVLINK_TRAP(LLDP, CONTROL),
- DEVLINK_TRAP(IGMP_QUERY, CONTROL),
- DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
- DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
- DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
- DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
- DEVLINK_TRAP(MLD_QUERY, CONTROL),
- DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
- DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
- DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
- DEVLINK_TRAP(IPV4_DHCP, CONTROL),
- DEVLINK_TRAP(IPV6_DHCP, CONTROL),
- DEVLINK_TRAP(ARP_REQUEST, CONTROL),
- DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
- DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
- DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
- DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
- DEVLINK_TRAP(IPV4_BFD, CONTROL),
- DEVLINK_TRAP(IPV6_BFD, CONTROL),
- DEVLINK_TRAP(IPV4_OSPF, CONTROL),
- DEVLINK_TRAP(IPV6_OSPF, CONTROL),
- DEVLINK_TRAP(IPV4_BGP, CONTROL),
- DEVLINK_TRAP(IPV6_BGP, CONTROL),
- DEVLINK_TRAP(IPV4_VRRP, CONTROL),
- DEVLINK_TRAP(IPV6_VRRP, CONTROL),
- DEVLINK_TRAP(IPV4_PIM, CONTROL),
- DEVLINK_TRAP(IPV6_PIM, CONTROL),
- DEVLINK_TRAP(UC_LB, CONTROL),
- DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
- DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
- DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
- DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
- DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
- DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
- DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
- DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
- DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
- DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
- DEVLINK_TRAP(PTP_EVENT, CONTROL),
- DEVLINK_TRAP(PTP_GENERAL, CONTROL),
- DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
- DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
- DEVLINK_TRAP(EARLY_DROP, DROP),
- DEVLINK_TRAP(VXLAN_PARSING, DROP),
- DEVLINK_TRAP(LLC_SNAP_PARSING, DROP),
- DEVLINK_TRAP(VLAN_PARSING, DROP),
- DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP),
- DEVLINK_TRAP(MPLS_PARSING, DROP),
- DEVLINK_TRAP(ARP_PARSING, DROP),
- DEVLINK_TRAP(IP_1_PARSING, DROP),
- DEVLINK_TRAP(IP_N_PARSING, DROP),
- DEVLINK_TRAP(GRE_PARSING, DROP),
- DEVLINK_TRAP(UDP_PARSING, DROP),
- DEVLINK_TRAP(TCP_PARSING, DROP),
- DEVLINK_TRAP(IPSEC_PARSING, DROP),
- DEVLINK_TRAP(SCTP_PARSING, DROP),
- DEVLINK_TRAP(DCCP_PARSING, DROP),
- DEVLINK_TRAP(GTP_PARSING, DROP),
- DEVLINK_TRAP(ESP_PARSING, DROP),
- DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP),
- DEVLINK_TRAP(DMAC_FILTER, DROP),
- DEVLINK_TRAP(EAPOL, CONTROL),
- DEVLINK_TRAP(LOCKED_PORT, DROP),
-};
-
-#define DEVLINK_TRAP_GROUP(_id) \
- { \
- .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
- .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
- }
-
-static const struct devlink_trap_group devlink_trap_group_generic[] = {
- DEVLINK_TRAP_GROUP(L2_DROPS),
- DEVLINK_TRAP_GROUP(L3_DROPS),
- DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
- DEVLINK_TRAP_GROUP(BUFFER_DROPS),
- DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
- DEVLINK_TRAP_GROUP(ACL_DROPS),
- DEVLINK_TRAP_GROUP(STP),
- DEVLINK_TRAP_GROUP(LACP),
- DEVLINK_TRAP_GROUP(LLDP),
- DEVLINK_TRAP_GROUP(MC_SNOOPING),
- DEVLINK_TRAP_GROUP(DHCP),
- DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
- DEVLINK_TRAP_GROUP(BFD),
- DEVLINK_TRAP_GROUP(OSPF),
- DEVLINK_TRAP_GROUP(BGP),
- DEVLINK_TRAP_GROUP(VRRP),
- DEVLINK_TRAP_GROUP(PIM),
- DEVLINK_TRAP_GROUP(UC_LB),
- DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
- DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY),
- DEVLINK_TRAP_GROUP(IPV6),
- DEVLINK_TRAP_GROUP(PTP_EVENT),
- DEVLINK_TRAP_GROUP(PTP_GENERAL),
- DEVLINK_TRAP_GROUP(ACL_SAMPLE),
- DEVLINK_TRAP_GROUP(ACL_TRAP),
- DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS),
- DEVLINK_TRAP_GROUP(EAPOL),
-};
-
-static int devlink_trap_generic_verify(const struct devlink_trap *trap)
-{
- if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
- return -EINVAL;
-
- if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
- return -EINVAL;
-
- if (trap->type != devlink_trap_generic[trap->id].type)
- return -EINVAL;
-
- return 0;
-}
-
-static int devlink_trap_driver_verify(const struct devlink_trap *trap)
-{
- int i;
-
- if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
- return -EINVAL;
-
- for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
- if (!strcmp(trap->name, devlink_trap_generic[i].name))
- return -EEXIST;
- }
-
- return 0;
-}
-
-static int devlink_trap_verify(const struct devlink_trap *trap)
-{
- if (!trap || !trap->name)
- return -EINVAL;
-
- if (trap->generic)
- return devlink_trap_generic_verify(trap);
- else
- return devlink_trap_driver_verify(trap);
-}
-
-static int
-devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
-{
- if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
- return -EINVAL;
-
- if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
- return -EINVAL;
-
- return 0;
-}
-
-static int
-devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
-{
- int i;
-
- if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
- return -EINVAL;
-
- for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
- if (!strcmp(group->name, devlink_trap_group_generic[i].name))
- return -EEXIST;
- }
-
- return 0;
-}
-
-static int devlink_trap_group_verify(const struct devlink_trap_group *group)
-{
- if (group->generic)
- return devlink_trap_group_generic_verify(group);
- else
- return devlink_trap_group_driver_verify(group);
-}
-
-static void
-devlink_trap_group_notify(struct devlink *devlink,
- const struct devlink_trap_group_item *group_item,
- enum devlink_command cmd)
-{
- struct sk_buff *msg;
- int err;
-
- WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
- cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
- 0);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int
-devlink_trap_item_group_link(struct devlink *devlink,
- struct devlink_trap_item *trap_item)
-{
- u16 group_id = trap_item->trap->init_group_id;
- struct devlink_trap_group_item *group_item;
-
- group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
- if (WARN_ON_ONCE(!group_item))
- return -EINVAL;
-
- trap_item->group_item = group_item;
-
- return 0;
-}
-
-static void devlink_trap_notify(struct devlink *devlink,
- const struct devlink_trap_item *trap_item,
- enum devlink_command cmd)
-{
- struct sk_buff *msg;
- int err;
-
- WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
- cmd != DEVLINK_CMD_TRAP_DEL);
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int
-devlink_trap_register(struct devlink *devlink,
- const struct devlink_trap *trap, void *priv)
-{
- struct devlink_trap_item *trap_item;
- int err;
-
- if (devlink_trap_item_lookup(devlink, trap->name))
- return -EEXIST;
-
- trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
- if (!trap_item)
- return -ENOMEM;
-
- trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
- if (!trap_item->stats) {
- err = -ENOMEM;
- goto err_stats_alloc;
- }
-
- trap_item->trap = trap;
- trap_item->action = trap->init_action;
- trap_item->priv = priv;
-
- err = devlink_trap_item_group_link(devlink, trap_item);
- if (err)
- goto err_group_link;
-
- err = devlink->ops->trap_init(devlink, trap, trap_item);
- if (err)
- goto err_trap_init;
-
- list_add_tail(&trap_item->list, &devlink->trap_list);
- devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
-
- return 0;
-
-err_trap_init:
-err_group_link:
- free_percpu(trap_item->stats);
-err_stats_alloc:
- kfree(trap_item);
- return err;
-}
-
-static void devlink_trap_unregister(struct devlink *devlink,
- const struct devlink_trap *trap)
-{
- struct devlink_trap_item *trap_item;
-
- trap_item = devlink_trap_item_lookup(devlink, trap->name);
- if (WARN_ON_ONCE(!trap_item))
- return;
-
- devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
- list_del(&trap_item->list);
- if (devlink->ops->trap_fini)
- devlink->ops->trap_fini(devlink, trap, trap_item);
- free_percpu(trap_item->stats);
- kfree(trap_item);
-}
-
-static void devlink_trap_disable(struct devlink *devlink,
- const struct devlink_trap *trap)
-{
- struct devlink_trap_item *trap_item;
-
- trap_item = devlink_trap_item_lookup(devlink, trap->name);
- if (WARN_ON_ONCE(!trap_item))
- return;
-
- devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP,
- NULL);
- trap_item->action = DEVLINK_TRAP_ACTION_DROP;
-}
-
-/**
- * devl_traps_register - Register packet traps with devlink.
- * @devlink: devlink.
- * @traps: Packet traps.
- * @traps_count: Count of provided packet traps.
- * @priv: Driver private information.
- *
- * Return: Non-zero value on failure.
- */
-int devl_traps_register(struct devlink *devlink,
- const struct devlink_trap *traps,
- size_t traps_count, void *priv)
-{
- int i, err;
-
- if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
- return -EINVAL;
-
- devl_assert_locked(devlink);
- for (i = 0; i < traps_count; i++) {
- const struct devlink_trap *trap = &traps[i];
-
- err = devlink_trap_verify(trap);
- if (err)
- goto err_trap_verify;
-
- err = devlink_trap_register(devlink, trap, priv);
- if (err)
- goto err_trap_register;
- }
-
- return 0;
-
-err_trap_register:
-err_trap_verify:
- for (i--; i >= 0; i--)
- devlink_trap_unregister(devlink, &traps[i]);
- return err;
-}
-EXPORT_SYMBOL_GPL(devl_traps_register);
-
-/**
- * devlink_traps_register - Register packet traps with devlink.
- * @devlink: devlink.
- * @traps: Packet traps.
- * @traps_count: Count of provided packet traps.
- * @priv: Driver private information.
- *
- * Context: Takes and release devlink->lock <mutex>.
- *
- * Return: Non-zero value on failure.
- */
-int devlink_traps_register(struct devlink *devlink,
- const struct devlink_trap *traps,
- size_t traps_count, void *priv)
-{
- int err;
-
- devl_lock(devlink);
- err = devl_traps_register(devlink, traps, traps_count, priv);
- devl_unlock(devlink);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_traps_register);
-
-/**
- * devl_traps_unregister - Unregister packet traps from devlink.
- * @devlink: devlink.
- * @traps: Packet traps.
- * @traps_count: Count of provided packet traps.
- */
-void devl_traps_unregister(struct devlink *devlink,
- const struct devlink_trap *traps,
- size_t traps_count)
-{
- int i;
-
- devl_assert_locked(devlink);
- /* Make sure we do not have any packets in-flight while unregistering
- * traps by disabling all of them and waiting for a grace period.
- */
- for (i = traps_count - 1; i >= 0; i--)
- devlink_trap_disable(devlink, &traps[i]);
- synchronize_rcu();
- for (i = traps_count - 1; i >= 0; i--)
- devlink_trap_unregister(devlink, &traps[i]);
-}
-EXPORT_SYMBOL_GPL(devl_traps_unregister);
-
-/**
- * devlink_traps_unregister - Unregister packet traps from devlink.
- * @devlink: devlink.
- * @traps: Packet traps.
- * @traps_count: Count of provided packet traps.
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_traps_unregister(struct devlink *devlink,
- const struct devlink_trap *traps,
- size_t traps_count)
-{
- devl_lock(devlink);
- devl_traps_unregister(devlink, traps, traps_count);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_traps_unregister);
-
-static void
-devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
- size_t skb_len)
-{
- struct devlink_stats *stats;
-
- stats = this_cpu_ptr(trap_stats);
- u64_stats_update_begin(&stats->syncp);
- u64_stats_add(&stats->rx_bytes, skb_len);
- u64_stats_inc(&stats->rx_packets);
- u64_stats_update_end(&stats->syncp);
-}
-
-static void
-devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
- const struct devlink_trap_item *trap_item,
- struct devlink_port *in_devlink_port,
- const struct flow_action_cookie *fa_cookie)
-{
- metadata->trap_name = trap_item->trap->name;
- metadata->trap_group_name = trap_item->group_item->group->name;
- metadata->fa_cookie = fa_cookie;
- metadata->trap_type = trap_item->trap->type;
-
- spin_lock(&in_devlink_port->type_lock);
- if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
- metadata->input_dev = in_devlink_port->type_eth.netdev;
- spin_unlock(&in_devlink_port->type_lock);
-}
-
-/**
- * devlink_trap_report - Report trapped packet to drop monitor.
- * @devlink: devlink.
- * @skb: Trapped packet.
- * @trap_ctx: Trap context.
- * @in_devlink_port: Input devlink port.
- * @fa_cookie: Flow action cookie. Could be NULL.
- */
-void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
- void *trap_ctx, struct devlink_port *in_devlink_port,
- const struct flow_action_cookie *fa_cookie)
-
-{
- struct devlink_trap_item *trap_item = trap_ctx;
-
- devlink_trap_stats_update(trap_item->stats, skb->len);
- devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
-
- if (trace_devlink_trap_report_enabled()) {
- struct devlink_trap_metadata metadata = {};
-
- devlink_trap_report_metadata_set(&metadata, trap_item,
- in_devlink_port, fa_cookie);
- trace_devlink_trap_report(devlink, skb, &metadata);
- }
-}
-EXPORT_SYMBOL_GPL(devlink_trap_report);
-
-/**
- * devlink_trap_ctx_priv - Trap context to driver private information.
- * @trap_ctx: Trap context.
- *
- * Return: Driver private information passed during registration.
- */
-void *devlink_trap_ctx_priv(void *trap_ctx)
-{
- struct devlink_trap_item *trap_item = trap_ctx;
-
- return trap_item->priv;
-}
-EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
-
-static int
-devlink_trap_group_item_policer_link(struct devlink *devlink,
- struct devlink_trap_group_item *group_item)
-{
- u32 policer_id = group_item->group->init_policer_id;
- struct devlink_trap_policer_item *policer_item;
-
- if (policer_id == 0)
- return 0;
-
- policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
- if (WARN_ON_ONCE(!policer_item))
- return -EINVAL;
-
- group_item->policer_item = policer_item;
-
- return 0;
-}
-
-static int
-devlink_trap_group_register(struct devlink *devlink,
- const struct devlink_trap_group *group)
-{
- struct devlink_trap_group_item *group_item;
- int err;
-
- if (devlink_trap_group_item_lookup(devlink, group->name))
- return -EEXIST;
-
- group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
- if (!group_item)
- return -ENOMEM;
-
- group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
- if (!group_item->stats) {
- err = -ENOMEM;
- goto err_stats_alloc;
- }
-
- group_item->group = group;
-
- err = devlink_trap_group_item_policer_link(devlink, group_item);
- if (err)
- goto err_policer_link;
-
- if (devlink->ops->trap_group_init) {
- err = devlink->ops->trap_group_init(devlink, group);
- if (err)
- goto err_group_init;
- }
-
- list_add_tail(&group_item->list, &devlink->trap_group_list);
- devlink_trap_group_notify(devlink, group_item,
- DEVLINK_CMD_TRAP_GROUP_NEW);
-
- return 0;
-
-err_group_init:
-err_policer_link:
- free_percpu(group_item->stats);
-err_stats_alloc:
- kfree(group_item);
- return err;
-}
-
-static void
-devlink_trap_group_unregister(struct devlink *devlink,
- const struct devlink_trap_group *group)
-{
- struct devlink_trap_group_item *group_item;
-
- group_item = devlink_trap_group_item_lookup(devlink, group->name);
- if (WARN_ON_ONCE(!group_item))
- return;
-
- devlink_trap_group_notify(devlink, group_item,
- DEVLINK_CMD_TRAP_GROUP_DEL);
- list_del(&group_item->list);
- free_percpu(group_item->stats);
- kfree(group_item);
-}
-
-/**
- * devl_trap_groups_register - Register packet trap groups with devlink.
- * @devlink: devlink.
- * @groups: Packet trap groups.
- * @groups_count: Count of provided packet trap groups.
- *
- * Return: Non-zero value on failure.
- */
-int devl_trap_groups_register(struct devlink *devlink,
- const struct devlink_trap_group *groups,
- size_t groups_count)
-{
- int i, err;
-
- devl_assert_locked(devlink);
- for (i = 0; i < groups_count; i++) {
- const struct devlink_trap_group *group = &groups[i];
-
- err = devlink_trap_group_verify(group);
- if (err)
- goto err_trap_group_verify;
-
- err = devlink_trap_group_register(devlink, group);
- if (err)
- goto err_trap_group_register;
- }
-
- return 0;
-
-err_trap_group_register:
-err_trap_group_verify:
- for (i--; i >= 0; i--)
- devlink_trap_group_unregister(devlink, &groups[i]);
- return err;
-}
-EXPORT_SYMBOL_GPL(devl_trap_groups_register);
-
-/**
- * devlink_trap_groups_register - Register packet trap groups with devlink.
- * @devlink: devlink.
- * @groups: Packet trap groups.
- * @groups_count: Count of provided packet trap groups.
- *
- * Context: Takes and release devlink->lock <mutex>.
- *
- * Return: Non-zero value on failure.
- */
-int devlink_trap_groups_register(struct devlink *devlink,
- const struct devlink_trap_group *groups,
- size_t groups_count)
-{
- int err;
-
- devl_lock(devlink);
- err = devl_trap_groups_register(devlink, groups, groups_count);
- devl_unlock(devlink);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
-
-/**
- * devl_trap_groups_unregister - Unregister packet trap groups from devlink.
- * @devlink: devlink.
- * @groups: Packet trap groups.
- * @groups_count: Count of provided packet trap groups.
- */
-void devl_trap_groups_unregister(struct devlink *devlink,
- const struct devlink_trap_group *groups,
- size_t groups_count)
-{
- int i;
-
- devl_assert_locked(devlink);
- for (i = groups_count - 1; i >= 0; i--)
- devlink_trap_group_unregister(devlink, &groups[i]);
-}
-EXPORT_SYMBOL_GPL(devl_trap_groups_unregister);
-
-/**
- * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
- * @devlink: devlink.
- * @groups: Packet trap groups.
- * @groups_count: Count of provided packet trap groups.
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_trap_groups_unregister(struct devlink *devlink,
- const struct devlink_trap_group *groups,
- size_t groups_count)
-{
- devl_lock(devlink);
- devl_trap_groups_unregister(devlink, groups, groups_count);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
-
-static void
-devlink_trap_policer_notify(struct devlink *devlink,
- const struct devlink_trap_policer_item *policer_item,
- enum devlink_command cmd)
-{
- struct sk_buff *msg;
- int err;
-
- WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
- cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
- 0, 0);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int
-devlink_trap_policer_register(struct devlink *devlink,
- const struct devlink_trap_policer *policer)
-{
- struct devlink_trap_policer_item *policer_item;
- int err;
-
- if (devlink_trap_policer_item_lookup(devlink, policer->id))
- return -EEXIST;
-
- policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
- if (!policer_item)
- return -ENOMEM;
-
- policer_item->policer = policer;
- policer_item->rate = policer->init_rate;
- policer_item->burst = policer->init_burst;
-
- if (devlink->ops->trap_policer_init) {
- err = devlink->ops->trap_policer_init(devlink, policer);
- if (err)
- goto err_policer_init;
- }
-
- list_add_tail(&policer_item->list, &devlink->trap_policer_list);
- devlink_trap_policer_notify(devlink, policer_item,
- DEVLINK_CMD_TRAP_POLICER_NEW);
-
- return 0;
-
-err_policer_init:
- kfree(policer_item);
- return err;
-}
-
-static void
-devlink_trap_policer_unregister(struct devlink *devlink,
- const struct devlink_trap_policer *policer)
-{
- struct devlink_trap_policer_item *policer_item;
-
- policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
- if (WARN_ON_ONCE(!policer_item))
- return;
-
- devlink_trap_policer_notify(devlink, policer_item,
- DEVLINK_CMD_TRAP_POLICER_DEL);
- list_del(&policer_item->list);
- if (devlink->ops->trap_policer_fini)
- devlink->ops->trap_policer_fini(devlink, policer);
- kfree(policer_item);
-}
-
-/**
- * devl_trap_policers_register - Register packet trap policers with devlink.
- * @devlink: devlink.
- * @policers: Packet trap policers.
- * @policers_count: Count of provided packet trap policers.
- *
- * Return: Non-zero value on failure.
- */
-int
-devl_trap_policers_register(struct devlink *devlink,
- const struct devlink_trap_policer *policers,
- size_t policers_count)
-{
- int i, err;
-
- devl_assert_locked(devlink);
- for (i = 0; i < policers_count; i++) {
- const struct devlink_trap_policer *policer = &policers[i];
-
- if (WARN_ON(policer->id == 0 ||
- policer->max_rate < policer->min_rate ||
- policer->max_burst < policer->min_burst)) {
- err = -EINVAL;
- goto err_trap_policer_verify;
- }
-
- err = devlink_trap_policer_register(devlink, policer);
- if (err)
- goto err_trap_policer_register;
- }
- return 0;
-
-err_trap_policer_register:
-err_trap_policer_verify:
- for (i--; i >= 0; i--)
- devlink_trap_policer_unregister(devlink, &policers[i]);
- return err;
-}
-EXPORT_SYMBOL_GPL(devl_trap_policers_register);
-
-/**
- * devl_trap_policers_unregister - Unregister packet trap policers from devlink.
- * @devlink: devlink.
- * @policers: Packet trap policers.
- * @policers_count: Count of provided packet trap policers.
- */
-void
-devl_trap_policers_unregister(struct devlink *devlink,
- const struct devlink_trap_policer *policers,
- size_t policers_count)
-{
- int i;
-
- devl_assert_locked(devlink);
- for (i = policers_count - 1; i >= 0; i--)
- devlink_trap_policer_unregister(devlink, &policers[i]);
-}
-EXPORT_SYMBOL_GPL(devl_trap_policers_unregister);
-
-static void __devlink_compat_running_version(struct devlink *devlink,
- char *buf, size_t len)
-{
- struct devlink_info_req req = {};
- const struct nlattr *nlattr;
- struct sk_buff *msg;
- int rem, err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- req.msg = msg;
- err = devlink->ops->info_get(devlink, &req, NULL);
- if (err)
- goto free_msg;
-
- nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
- const struct nlattr *kv;
- int rem_kv;
-
- if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
- continue;
-
- nla_for_each_nested(kv, nlattr, rem_kv) {
- if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
- continue;
-
- strlcat(buf, nla_data(kv), len);
- strlcat(buf, " ", len);
- }
- }
-free_msg:
- nlmsg_free(msg);
-}
-
-void devlink_compat_running_version(struct devlink *devlink,
- char *buf, size_t len)
-{
- if (!devlink->ops->info_get)
- return;
-
- devl_lock(devlink);
- __devlink_compat_running_version(devlink, buf, len);
- devl_unlock(devlink);
-}
-
-int devlink_compat_flash_update(struct devlink *devlink, const char *file_name)
-{
- struct devlink_flash_update_params params = {};
- int ret;
-
- if (!devlink->ops->flash_update)
- return -EOPNOTSUPP;
-
- ret = request_firmware(¶ms.fw, file_name, devlink->dev);
- if (ret)
- return ret;
-
- devl_lock(devlink);
- devlink_flash_update_begin_notify(devlink);
- ret = devlink->ops->flash_update(devlink, ¶ms, NULL);
- devlink_flash_update_end_notify(devlink);
- devl_unlock(devlink);
-
- release_firmware(params.fw);
-
- return ret;
-}
-
-int devlink_compat_phys_port_name_get(struct net_device *dev,
- char *name, size_t len)
-{
- struct devlink_port *devlink_port;
-
- /* RTNL mutex is held here which ensures that devlink_port
- * instance cannot disappear in the middle. No need to take
- * any devlink lock as only permanent values are accessed.
- */
- ASSERT_RTNL();
-
- devlink_port = dev->devlink_port;
- if (!devlink_port)
- return -EOPNOTSUPP;
-
- return __devlink_port_phys_port_name_get(devlink_port, name, len);
-}
-
-int devlink_compat_switch_id_get(struct net_device *dev,
- struct netdev_phys_item_id *ppid)
-{
- struct devlink_port *devlink_port;
-
- /* Caller must hold RTNL mutex or reference to dev, which ensures that
- * devlink_port instance cannot disappear in the middle. No need to take
- * any devlink lock as only permanent values are accessed.
- */
- devlink_port = dev->devlink_port;
- if (!devlink_port || !devlink_port->switch_port)
- return -EOPNOTSUPP;
-
- memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
-
- return 0;
-}
-
-static void __net_exit devlink_pernet_pre_exit(struct net *net)
-{
- struct devlink *devlink;
- u32 actions_performed;
- unsigned long index;
- int err;
-
- /* In case network namespace is getting destroyed, reload
- * all devlink instances from this namespace into init_net.
- */
- devlinks_xa_for_each_registered_get(net, index, devlink) {
- WARN_ON(!(devlink->features & DEVLINK_F_RELOAD));
- mutex_lock(&devlink->lock);
- err = devlink_reload(devlink, &init_net,
- DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
- DEVLINK_RELOAD_LIMIT_UNSPEC,
- &actions_performed, NULL);
- mutex_unlock(&devlink->lock);
- if (err && err != -EOPNOTSUPP)
- pr_warn("Failed to reload devlink instance into init_net\n");
- devlink_put(devlink);
- }
-}
-
-static struct pernet_operations devlink_pernet_ops __net_initdata = {
- .pre_exit = devlink_pernet_pre_exit,
-};
-
-static int __init devlink_init(void)
-{
- int err;
-
- err = genl_register_family(&devlink_nl_family);
- if (err)
- goto out;
- err = register_pernet_subsys(&devlink_pernet_ops);
-
-out:
- WARN_ON(err);
- return err;
-}
-
-subsys_initcall(devlink_init);
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0
+
+obj-y := leftover.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * net/core/devlink.c - Network physical/parent device Netlink interface
+ *
+ * Heavily inspired by net/wireless/
+ * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/gfp.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/spinlock.h>
+#include <linux/refcount.h>
+#include <linux/workqueue.h>
+#include <linux/u64_stats_sync.h>
+#include <linux/timekeeping.h>
+#include <rdma/ib_verbs.h>
+#include <net/netlink.h>
+#include <net/genetlink.h>
+#include <net/rtnetlink.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+#include <net/devlink.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/devlink.h>
+
+#define DEVLINK_RELOAD_STATS_ARRAY_SIZE \
+ (__DEVLINK_RELOAD_LIMIT_MAX * __DEVLINK_RELOAD_ACTION_MAX)
+
+struct devlink_dev_stats {
+ u32 reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
+ u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
+};
+
+struct devlink {
+ u32 index;
+ struct xarray ports;
+ struct list_head rate_list;
+ struct list_head sb_list;
+ struct list_head dpipe_table_list;
+ struct list_head resource_list;
+ struct list_head param_list;
+ struct list_head region_list;
+ struct list_head reporter_list;
+ struct mutex reporters_lock; /* protects reporter_list */
+ struct devlink_dpipe_headers *dpipe_headers;
+ struct list_head trap_list;
+ struct list_head trap_group_list;
+ struct list_head trap_policer_list;
+ struct list_head linecard_list;
+ struct mutex linecards_lock; /* protects linecard_list */
+ const struct devlink_ops *ops;
+ u64 features;
+ struct xarray snapshot_ids;
+ struct devlink_dev_stats stats;
+ struct device *dev;
+ possible_net_t _net;
+ /* Serializes access to devlink instance specific objects such as
+ * port, sb, dpipe, resource, params, region, traps and more.
+ */
+ struct mutex lock;
+ struct lock_class_key lock_key;
+ u8 reload_failed:1;
+ refcount_t refcount;
+ struct completion comp;
+ struct rcu_head rcu;
+ struct notifier_block netdevice_nb;
+ char priv[] __aligned(NETDEV_ALIGN);
+};
+
+struct devlink_linecard_ops;
+struct devlink_linecard_type;
+
+struct devlink_linecard {
+ struct list_head list;
+ struct devlink *devlink;
+ unsigned int index;
+ refcount_t refcount;
+ const struct devlink_linecard_ops *ops;
+ void *priv;
+ enum devlink_linecard_state state;
+ struct mutex state_lock; /* Protects state */
+ const char *type;
+ struct devlink_linecard_type *types;
+ unsigned int types_count;
+ struct devlink *nested_devlink;
+};
+
+/**
+ * struct devlink_resource - devlink resource
+ * @name: name of the resource
+ * @id: id, per devlink instance
+ * @size: size of the resource
+ * @size_new: updated size of the resource, reload is needed
+ * @size_valid: valid in case the total size of the resource is valid
+ * including its children
+ * @parent: parent resource
+ * @size_params: size parameters
+ * @list: parent list
+ * @resource_list: list of child resources
+ * @occ_get: occupancy getter callback
+ * @occ_get_priv: occupancy getter callback priv
+ */
+struct devlink_resource {
+ const char *name;
+ u64 id;
+ u64 size;
+ u64 size_new;
+ bool size_valid;
+ struct devlink_resource *parent;
+ struct devlink_resource_size_params size_params;
+ struct list_head list;
+ struct list_head resource_list;
+ devlink_resource_occ_get_t *occ_get;
+ void *occ_get_priv;
+};
+
+void *devlink_priv(struct devlink *devlink)
+{
+ return &devlink->priv;
+}
+EXPORT_SYMBOL_GPL(devlink_priv);
+
+struct devlink *priv_to_devlink(void *priv)
+{
+ return container_of(priv, struct devlink, priv);
+}
+EXPORT_SYMBOL_GPL(priv_to_devlink);
+
+struct device *devlink_to_dev(const struct devlink *devlink)
+{
+ return devlink->dev;
+}
+EXPORT_SYMBOL_GPL(devlink_to_dev);
+
+static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
+ {
+ .name = "destination mac",
+ .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
+ .bitwidth = 48,
+ },
+};
+
+struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
+ .name = "ethernet",
+ .id = DEVLINK_DPIPE_HEADER_ETHERNET,
+ .fields = devlink_dpipe_fields_ethernet,
+ .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
+ .global = true,
+};
+EXPORT_SYMBOL_GPL(devlink_dpipe_header_ethernet);
+
+static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
+ {
+ .name = "destination ip",
+ .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
+ .bitwidth = 32,
+ },
+};
+
+struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
+ .name = "ipv4",
+ .id = DEVLINK_DPIPE_HEADER_IPV4,
+ .fields = devlink_dpipe_fields_ipv4,
+ .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
+ .global = true,
+};
+EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv4);
+
+static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
+ {
+ .name = "destination ip",
+ .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
+ .bitwidth = 128,
+ },
+};
+
+struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
+ .name = "ipv6",
+ .id = DEVLINK_DPIPE_HEADER_IPV6,
+ .fields = devlink_dpipe_fields_ipv6,
+ .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
+ .global = true,
+};
+EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv6);
+
+EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
+EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
+EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
+
+#define DEVLINK_PORT_FN_CAPS_VALID_MASK \
+ (_BITUL(__DEVLINK_PORT_FN_ATTR_CAPS_MAX) - 1)
+
+static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
+ [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
+ [DEVLINK_PORT_FN_ATTR_STATE] =
+ NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
+ DEVLINK_PORT_FN_STATE_ACTIVE),
+ [DEVLINK_PORT_FN_ATTR_CAPS] =
+ NLA_POLICY_BITFIELD32(DEVLINK_PORT_FN_CAPS_VALID_MASK),
+};
+
+static const struct nla_policy devlink_selftest_nl_policy[DEVLINK_ATTR_SELFTEST_ID_MAX + 1] = {
+ [DEVLINK_ATTR_SELFTEST_ID_FLASH] = { .type = NLA_FLAG },
+};
+
+static DEFINE_XARRAY_FLAGS(devlinks, XA_FLAGS_ALLOC);
+#define DEVLINK_REGISTERED XA_MARK_1
+#define DEVLINK_UNREGISTERING XA_MARK_2
+
+/* devlink instances are open to the access from the user space after
+ * devlink_register() call. Such logical barrier allows us to have certain
+ * expectations related to locking.
+ *
+ * Before *_register() - we are in initialization stage and no parallel
+ * access possible to the devlink instance. All drivers perform that phase
+ * by implicitly holding device_lock.
+ *
+ * After *_register() - users and driver can access devlink instance at
+ * the same time.
+ */
+#define ASSERT_DEVLINK_REGISTERED(d) \
+ WARN_ON_ONCE(!xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
+#define ASSERT_DEVLINK_NOT_REGISTERED(d) \
+ WARN_ON_ONCE(xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
+
+struct net *devlink_net(const struct devlink *devlink)
+{
+ return read_pnet(&devlink->_net);
+}
+EXPORT_SYMBOL_GPL(devlink_net);
+
+static void __devlink_put_rcu(struct rcu_head *head)
+{
+ struct devlink *devlink = container_of(head, struct devlink, rcu);
+
+ complete(&devlink->comp);
+}
+
+void devlink_put(struct devlink *devlink)
+{
+ if (refcount_dec_and_test(&devlink->refcount))
+ /* Make sure unregister operation that may await the completion
+ * is unblocked only after all users are after the end of
+ * RCU grace period.
+ */
+ call_rcu(&devlink->rcu, __devlink_put_rcu);
+}
+
+struct devlink *__must_check devlink_try_get(struct devlink *devlink)
+{
+ if (refcount_inc_not_zero(&devlink->refcount))
+ return devlink;
+ return NULL;
+}
+
+void devl_assert_locked(struct devlink *devlink)
+{
+ lockdep_assert_held(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devl_assert_locked);
+
+#ifdef CONFIG_LOCKDEP
+/* For use in conjunction with LOCKDEP only e.g. rcu_dereference_protected() */
+bool devl_lock_is_held(struct devlink *devlink)
+{
+ return lockdep_is_held(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devl_lock_is_held);
+#endif
+
+void devl_lock(struct devlink *devlink)
+{
+ mutex_lock(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devl_lock);
+
+int devl_trylock(struct devlink *devlink)
+{
+ return mutex_trylock(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devl_trylock);
+
+void devl_unlock(struct devlink *devlink)
+{
+ mutex_unlock(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devl_unlock);
+
+static struct devlink *
+devlinks_xa_find_get(struct net *net, unsigned long *indexp, xa_mark_t filter,
+ void * (*xa_find_fn)(struct xarray *, unsigned long *,
+ unsigned long, xa_mark_t))
+{
+ struct devlink *devlink;
+
+ rcu_read_lock();
+retry:
+ devlink = xa_find_fn(&devlinks, indexp, ULONG_MAX, DEVLINK_REGISTERED);
+ if (!devlink)
+ goto unlock;
+
+ /* In case devlink_unregister() was already called and "unregistering"
+ * mark was set, do not allow to get a devlink reference here.
+ * This prevents live-lock of devlink_unregister() wait for completion.
+ */
+ if (xa_get_mark(&devlinks, *indexp, DEVLINK_UNREGISTERING))
+ goto retry;
+
+ /* For a possible retry, the xa_find_after() should be always used */
+ xa_find_fn = xa_find_after;
+ if (!devlink_try_get(devlink))
+ goto retry;
+ if (!net_eq(devlink_net(devlink), net)) {
+ devlink_put(devlink);
+ goto retry;
+ }
+unlock:
+ rcu_read_unlock();
+ return devlink;
+}
+
+static struct devlink *devlinks_xa_find_get_first(struct net *net,
+ unsigned long *indexp,
+ xa_mark_t filter)
+{
+ return devlinks_xa_find_get(net, indexp, filter, xa_find);
+}
+
+static struct devlink *devlinks_xa_find_get_next(struct net *net,
+ unsigned long *indexp,
+ xa_mark_t filter)
+{
+ return devlinks_xa_find_get(net, indexp, filter, xa_find_after);
+}
+
+/* Iterate over devlink pointers which were possible to get reference to.
+ * devlink_put() needs to be called for each iterated devlink pointer
+ * in loop body in order to release the reference.
+ */
+#define devlinks_xa_for_each_get(net, index, devlink, filter) \
+ for (index = 0, \
+ devlink = devlinks_xa_find_get_first(net, &index, filter); \
+ devlink; devlink = devlinks_xa_find_get_next(net, &index, filter))
+
+#define devlinks_xa_for_each_registered_get(net, index, devlink) \
+ devlinks_xa_for_each_get(net, index, devlink, DEVLINK_REGISTERED)
+
+static struct devlink *devlink_get_from_attrs(struct net *net,
+ struct nlattr **attrs)
+{
+ struct devlink *devlink;
+ unsigned long index;
+ char *busname;
+ char *devname;
+
+ if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
+ return ERR_PTR(-EINVAL);
+
+ busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
+ devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
+
+ devlinks_xa_for_each_registered_get(net, index, devlink) {
+ if (strcmp(devlink->dev->bus->name, busname) == 0 &&
+ strcmp(dev_name(devlink->dev), devname) == 0)
+ return devlink;
+ devlink_put(devlink);
+ }
+
+ return ERR_PTR(-ENODEV);
+}
+
+#define ASSERT_DEVLINK_PORT_REGISTERED(devlink_port) \
+ WARN_ON_ONCE(!(devlink_port)->registered)
+#define ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port) \
+ WARN_ON_ONCE((devlink_port)->registered)
+#define ASSERT_DEVLINK_PORT_INITIALIZED(devlink_port) \
+ WARN_ON_ONCE(!(devlink_port)->initialized)
+
+static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
+ unsigned int port_index)
+{
+ return xa_load(&devlink->ports, port_index);
+}
+
+static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
+ struct nlattr **attrs)
+{
+ if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
+ struct devlink_port *devlink_port;
+
+ devlink_port = devlink_port_get_by_index(devlink, port_index);
+ if (!devlink_port)
+ return ERR_PTR(-ENODEV);
+ return devlink_port;
+ }
+ return ERR_PTR(-EINVAL);
+}
+
+static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ return devlink_port_get_from_attrs(devlink, info->attrs);
+}
+
+static inline bool
+devlink_rate_is_leaf(struct devlink_rate *devlink_rate)
+{
+ return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF;
+}
+
+static inline bool
+devlink_rate_is_node(struct devlink_rate *devlink_rate)
+{
+ return devlink_rate->type == DEVLINK_RATE_TYPE_NODE;
+}
+
+static struct devlink_rate *
+devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info)
+{
+ struct devlink_rate *devlink_rate;
+ struct devlink_port *devlink_port;
+
+ devlink_port = devlink_port_get_from_attrs(devlink, info->attrs);
+ if (IS_ERR(devlink_port))
+ return ERR_CAST(devlink_port);
+ devlink_rate = devlink_port->devlink_rate;
+ return devlink_rate ?: ERR_PTR(-ENODEV);
+}
+
+static struct devlink_rate *
+devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name)
+{
+ static struct devlink_rate *devlink_rate;
+
+ list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
+ if (devlink_rate_is_node(devlink_rate) &&
+ !strcmp(node_name, devlink_rate->name))
+ return devlink_rate;
+ }
+ return ERR_PTR(-ENODEV);
+}
+
+static struct devlink_rate *
+devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
+{
+ const char *rate_node_name;
+ size_t len;
+
+ if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME])
+ return ERR_PTR(-EINVAL);
+ rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]);
+ len = strlen(rate_node_name);
+ /* Name cannot be empty or decimal number */
+ if (!len || strspn(rate_node_name, "0123456789") == len)
+ return ERR_PTR(-EINVAL);
+
+ return devlink_rate_node_get_by_name(devlink, rate_node_name);
+}
+
+static struct devlink_rate *
+devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info)
+{
+ return devlink_rate_node_get_from_attrs(devlink, info->attrs);
+}
+
+static struct devlink_rate *
+devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info)
+{
+ struct nlattr **attrs = info->attrs;
+
+ if (attrs[DEVLINK_ATTR_PORT_INDEX])
+ return devlink_rate_leaf_get_from_info(devlink, info);
+ else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME])
+ return devlink_rate_node_get_from_info(devlink, info);
+ else
+ return ERR_PTR(-EINVAL);
+}
+
+static struct devlink_linecard *
+devlink_linecard_get_by_index(struct devlink *devlink,
+ unsigned int linecard_index)
+{
+ struct devlink_linecard *devlink_linecard;
+
+ list_for_each_entry(devlink_linecard, &devlink->linecard_list, list) {
+ if (devlink_linecard->index == linecard_index)
+ return devlink_linecard;
+ }
+ return NULL;
+}
+
+static bool devlink_linecard_index_exists(struct devlink *devlink,
+ unsigned int linecard_index)
+{
+ return devlink_linecard_get_by_index(devlink, linecard_index);
+}
+
+static struct devlink_linecard *
+devlink_linecard_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
+{
+ if (attrs[DEVLINK_ATTR_LINECARD_INDEX]) {
+ u32 linecard_index = nla_get_u32(attrs[DEVLINK_ATTR_LINECARD_INDEX]);
+ struct devlink_linecard *linecard;
+
+ mutex_lock(&devlink->linecards_lock);
+ linecard = devlink_linecard_get_by_index(devlink, linecard_index);
+ if (linecard)
+ refcount_inc(&linecard->refcount);
+ mutex_unlock(&devlink->linecards_lock);
+ if (!linecard)
+ return ERR_PTR(-ENODEV);
+ return linecard;
+ }
+ return ERR_PTR(-EINVAL);
+}
+
+static struct devlink_linecard *
+devlink_linecard_get_from_info(struct devlink *devlink, struct genl_info *info)
+{
+ return devlink_linecard_get_from_attrs(devlink, info->attrs);
+}
+
+static void devlink_linecard_put(struct devlink_linecard *linecard)
+{
+ if (refcount_dec_and_test(&linecard->refcount)) {
+ mutex_destroy(&linecard->state_lock);
+ kfree(linecard);
+ }
+}
+
+struct devlink_sb {
+ struct list_head list;
+ unsigned int index;
+ u32 size;
+ u16 ingress_pools_count;
+ u16 egress_pools_count;
+ u16 ingress_tc_count;
+ u16 egress_tc_count;
+};
+
+static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
+{
+ return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
+}
+
+static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
+ unsigned int sb_index)
+{
+ struct devlink_sb *devlink_sb;
+
+ list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
+ if (devlink_sb->index == sb_index)
+ return devlink_sb;
+ }
+ return NULL;
+}
+
+static bool devlink_sb_index_exists(struct devlink *devlink,
+ unsigned int sb_index)
+{
+ return devlink_sb_get_by_index(devlink, sb_index);
+}
+
+static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
+ struct nlattr **attrs)
+{
+ if (attrs[DEVLINK_ATTR_SB_INDEX]) {
+ u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
+ struct devlink_sb *devlink_sb;
+
+ devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
+ if (!devlink_sb)
+ return ERR_PTR(-ENODEV);
+ return devlink_sb;
+ }
+ return ERR_PTR(-EINVAL);
+}
+
+static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ return devlink_sb_get_from_attrs(devlink, info->attrs);
+}
+
+static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
+ struct nlattr **attrs,
+ u16 *p_pool_index)
+{
+ u16 val;
+
+ if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
+ return -EINVAL;
+
+ val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
+ if (val >= devlink_sb_pool_count(devlink_sb))
+ return -EINVAL;
+ *p_pool_index = val;
+ return 0;
+}
+
+static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
+ struct genl_info *info,
+ u16 *p_pool_index)
+{
+ return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
+ p_pool_index);
+}
+
+static int
+devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
+ enum devlink_sb_pool_type *p_pool_type)
+{
+ u8 val;
+
+ if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
+ return -EINVAL;
+
+ val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
+ if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
+ val != DEVLINK_SB_POOL_TYPE_EGRESS)
+ return -EINVAL;
+ *p_pool_type = val;
+ return 0;
+}
+
+static int
+devlink_sb_pool_type_get_from_info(struct genl_info *info,
+ enum devlink_sb_pool_type *p_pool_type)
+{
+ return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
+}
+
+static int
+devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
+ enum devlink_sb_threshold_type *p_th_type)
+{
+ u8 val;
+
+ if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
+ return -EINVAL;
+
+ val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
+ if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
+ val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
+ return -EINVAL;
+ *p_th_type = val;
+ return 0;
+}
+
+static int
+devlink_sb_th_type_get_from_info(struct genl_info *info,
+ enum devlink_sb_threshold_type *p_th_type)
+{
+ return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
+}
+
+static int
+devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
+ struct nlattr **attrs,
+ enum devlink_sb_pool_type pool_type,
+ u16 *p_tc_index)
+{
+ u16 val;
+
+ if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
+ return -EINVAL;
+
+ val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
+ if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
+ val >= devlink_sb->ingress_tc_count)
+ return -EINVAL;
+ if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
+ val >= devlink_sb->egress_tc_count)
+ return -EINVAL;
+ *p_tc_index = val;
+ return 0;
+}
+
+static void devlink_port_fn_cap_fill(struct nla_bitfield32 *caps,
+ u32 cap, bool is_enable)
+{
+ caps->selector |= cap;
+ if (is_enable)
+ caps->value |= cap;
+}
+
+static int devlink_port_fn_roce_fill(const struct devlink_ops *ops,
+ struct devlink_port *devlink_port,
+ struct nla_bitfield32 *caps,
+ struct netlink_ext_ack *extack)
+{
+ bool is_enable;
+ int err;
+
+ if (!ops->port_fn_roce_get)
+ return 0;
+
+ err = ops->port_fn_roce_get(devlink_port, &is_enable, extack);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+
+ devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_ROCE, is_enable);
+ return 0;
+}
+
+static int devlink_port_fn_migratable_fill(const struct devlink_ops *ops,
+ struct devlink_port *devlink_port,
+ struct nla_bitfield32 *caps,
+ struct netlink_ext_ack *extack)
+{
+ bool is_enable;
+ int err;
+
+ if (!ops->port_fn_migratable_get ||
+ devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF)
+ return 0;
+
+ err = ops->port_fn_migratable_get(devlink_port, &is_enable, extack);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+
+ devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_MIGRATABLE, is_enable);
+ return 0;
+}
+
+static int devlink_port_fn_caps_fill(const struct devlink_ops *ops,
+ struct devlink_port *devlink_port,
+ struct sk_buff *msg,
+ struct netlink_ext_ack *extack,
+ bool *msg_updated)
+{
+ struct nla_bitfield32 caps = {};
+ int err;
+
+ err = devlink_port_fn_roce_fill(ops, devlink_port, &caps, extack);
+ if (err)
+ return err;
+
+ err = devlink_port_fn_migratable_fill(ops, devlink_port, &caps, extack);
+ if (err)
+ return err;
+
+ if (!caps.selector)
+ return 0;
+ err = nla_put_bitfield32(msg, DEVLINK_PORT_FN_ATTR_CAPS, caps.value,
+ caps.selector);
+ if (err)
+ return err;
+
+ *msg_updated = true;
+ return 0;
+}
+
+static int
+devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
+ struct genl_info *info,
+ enum devlink_sb_pool_type pool_type,
+ u16 *p_tc_index)
+{
+ return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
+ pool_type, p_tc_index);
+}
+
+struct devlink_region {
+ struct devlink *devlink;
+ struct devlink_port *port;
+ struct list_head list;
+ union {
+ const struct devlink_region_ops *ops;
+ const struct devlink_port_region_ops *port_ops;
+ };
+ struct mutex snapshot_lock; /* protects snapshot_list,
+ * max_snapshots and cur_snapshots
+ * consistency.
+ */
+ struct list_head snapshot_list;
+ u32 max_snapshots;
+ u32 cur_snapshots;
+ u64 size;
+};
+
+struct devlink_snapshot {
+ struct list_head list;
+ struct devlink_region *region;
+ u8 *data;
+ u32 id;
+};
+
+static struct devlink_region *
+devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
+{
+ struct devlink_region *region;
+
+ list_for_each_entry(region, &devlink->region_list, list)
+ if (!strcmp(region->ops->name, region_name))
+ return region;
+
+ return NULL;
+}
+
+static struct devlink_region *
+devlink_port_region_get_by_name(struct devlink_port *port,
+ const char *region_name)
+{
+ struct devlink_region *region;
+
+ list_for_each_entry(region, &port->region_list, list)
+ if (!strcmp(region->ops->name, region_name))
+ return region;
+
+ return NULL;
+}
+
+static struct devlink_snapshot *
+devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
+{
+ struct devlink_snapshot *snapshot;
+
+ list_for_each_entry(snapshot, ®ion->snapshot_list, list)
+ if (snapshot->id == id)
+ return snapshot;
+
+ return NULL;
+}
+
+#define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
+#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1)
+#define DEVLINK_NL_FLAG_NEED_RATE BIT(2)
+#define DEVLINK_NL_FLAG_NEED_RATE_NODE BIT(3)
+#define DEVLINK_NL_FLAG_NEED_LINECARD BIT(4)
+
+static int devlink_nl_pre_doit(const struct genl_split_ops *ops,
+ struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink_linecard *linecard;
+ struct devlink_port *devlink_port;
+ struct devlink *devlink;
+ int err;
+
+ devlink = devlink_get_from_attrs(genl_info_net(info), info->attrs);
+ if (IS_ERR(devlink))
+ return PTR_ERR(devlink);
+ devl_lock(devlink);
+ info->user_ptr[0] = devlink;
+ if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
+ devlink_port = devlink_port_get_from_info(devlink, info);
+ if (IS_ERR(devlink_port)) {
+ err = PTR_ERR(devlink_port);
+ goto unlock;
+ }
+ info->user_ptr[1] = devlink_port;
+ } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) {
+ devlink_port = devlink_port_get_from_info(devlink, info);
+ if (!IS_ERR(devlink_port))
+ info->user_ptr[1] = devlink_port;
+ } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE) {
+ struct devlink_rate *devlink_rate;
+
+ devlink_rate = devlink_rate_get_from_info(devlink, info);
+ if (IS_ERR(devlink_rate)) {
+ err = PTR_ERR(devlink_rate);
+ goto unlock;
+ }
+ info->user_ptr[1] = devlink_rate;
+ } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE_NODE) {
+ struct devlink_rate *rate_node;
+
+ rate_node = devlink_rate_node_get_from_info(devlink, info);
+ if (IS_ERR(rate_node)) {
+ err = PTR_ERR(rate_node);
+ goto unlock;
+ }
+ info->user_ptr[1] = rate_node;
+ } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) {
+ linecard = devlink_linecard_get_from_info(devlink, info);
+ if (IS_ERR(linecard)) {
+ err = PTR_ERR(linecard);
+ goto unlock;
+ }
+ info->user_ptr[1] = linecard;
+ }
+ return 0;
+
+unlock:
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ return err;
+}
+
+static void devlink_nl_post_doit(const struct genl_split_ops *ops,
+ struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink_linecard *linecard;
+ struct devlink *devlink;
+
+ devlink = info->user_ptr[0];
+ if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) {
+ linecard = info->user_ptr[1];
+ devlink_linecard_put(linecard);
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+}
+
+static struct genl_family devlink_nl_family;
+
+enum devlink_multicast_groups {
+ DEVLINK_MCGRP_CONFIG,
+};
+
+static const struct genl_multicast_group devlink_nl_mcgrps[] = {
+ [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
+};
+
+static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
+{
+ if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
+ return -EMSGSIZE;
+ if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
+ return -EMSGSIZE;
+ return 0;
+}
+
+static int devlink_nl_put_nested_handle(struct sk_buff *msg, struct devlink *devlink)
+{
+ struct nlattr *nested_attr;
+
+ nested_attr = nla_nest_start(msg, DEVLINK_ATTR_NESTED_DEVLINK);
+ if (!nested_attr)
+ return -EMSGSIZE;
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, nested_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, nested_attr);
+ return -EMSGSIZE;
+}
+
+int devlink_nl_port_handle_fill(struct sk_buff *msg, struct devlink_port *devlink_port)
+{
+ if (devlink_nl_put_handle(msg, devlink_port->devlink))
+ return -EMSGSIZE;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
+ return -EMSGSIZE;
+ return 0;
+}
+
+size_t devlink_nl_port_handle_size(struct devlink_port *devlink_port)
+{
+ struct devlink *devlink = devlink_port->devlink;
+
+ return nla_total_size(strlen(devlink->dev->bus->name) + 1) /* DEVLINK_ATTR_BUS_NAME */
+ + nla_total_size(strlen(dev_name(devlink->dev)) + 1) /* DEVLINK_ATTR_DEV_NAME */
+ + nla_total_size(4); /* DEVLINK_ATTR_PORT_INDEX */
+}
+
+struct devlink_reload_combination {
+ enum devlink_reload_action action;
+ enum devlink_reload_limit limit;
+};
+
+static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
+ {
+ /* can't reinitialize driver with no down time */
+ .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
+ .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
+ },
+};
+
+static bool
+devlink_reload_combination_is_invalid(enum devlink_reload_action action,
+ enum devlink_reload_limit limit)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
+ if (devlink_reload_invalid_combinations[i].action == action &&
+ devlink_reload_invalid_combinations[i].limit == limit)
+ return true;
+ return false;
+}
+
+static bool
+devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
+{
+ return test_bit(action, &devlink->ops->reload_actions);
+}
+
+static bool
+devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
+{
+ return test_bit(limit, &devlink->ops->reload_limits);
+}
+
+static int devlink_reload_stat_put(struct sk_buff *msg,
+ enum devlink_reload_limit limit, u32 value)
+{
+ struct nlattr *reload_stats_entry;
+
+ reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
+ if (!reload_stats_entry)
+ return -EMSGSIZE;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
+ nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
+ goto nla_put_failure;
+ nla_nest_end(msg, reload_stats_entry);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, reload_stats_entry);
+ return -EMSGSIZE;
+}
+
+static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
+{
+ struct nlattr *reload_stats_attr, *act_info, *act_stats;
+ int i, j, stat_idx;
+ u32 value;
+
+ if (!is_remote)
+ reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
+ else
+ reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
+
+ if (!reload_stats_attr)
+ return -EMSGSIZE;
+
+ for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
+ if ((!is_remote &&
+ !devlink_reload_action_is_supported(devlink, i)) ||
+ i == DEVLINK_RELOAD_ACTION_UNSPEC)
+ continue;
+ act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
+ if (!act_info)
+ goto nla_put_failure;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
+ goto action_info_nest_cancel;
+ act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
+ if (!act_stats)
+ goto action_info_nest_cancel;
+
+ for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
+ /* Remote stats are shown even if not locally supported.
+ * Stats of actions with unspecified limit are shown
+ * though drivers don't need to register unspecified
+ * limit.
+ */
+ if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
+ !devlink_reload_limit_is_supported(devlink, j)) ||
+ devlink_reload_combination_is_invalid(i, j))
+ continue;
+
+ stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
+ if (!is_remote)
+ value = devlink->stats.reload_stats[stat_idx];
+ else
+ value = devlink->stats.remote_reload_stats[stat_idx];
+ if (devlink_reload_stat_put(msg, j, value))
+ goto action_stats_nest_cancel;
+ }
+ nla_nest_end(msg, act_stats);
+ nla_nest_end(msg, act_info);
+ }
+ nla_nest_end(msg, reload_stats_attr);
+ return 0;
+
+action_stats_nest_cancel:
+ nla_nest_cancel(msg, act_stats);
+action_info_nest_cancel:
+ nla_nest_cancel(msg, act_info);
+nla_put_failure:
+ nla_nest_cancel(msg, reload_stats_attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags)
+{
+ struct nlattr *dev_stats;
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
+ goto nla_put_failure;
+
+ dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
+ if (!dev_stats)
+ goto nla_put_failure;
+
+ if (devlink_reload_stats_put(msg, devlink, false))
+ goto dev_stats_nest_cancel;
+ if (devlink_reload_stats_put(msg, devlink, true))
+ goto dev_stats_nest_cancel;
+
+ nla_nest_end(msg, dev_stats);
+ genlmsg_end(msg, hdr);
+ return 0;
+
+dev_stats_nest_cancel:
+ nla_nest_cancel(msg, dev_stats);
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
+ WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int devlink_nl_port_attrs_put(struct sk_buff *msg,
+ struct devlink_port *devlink_port)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+
+ if (!devlink_port->attrs_set)
+ return 0;
+ if (attrs->lanes) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
+ return -EMSGSIZE;
+ }
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
+ return -EMSGSIZE;
+ if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
+ return -EMSGSIZE;
+ switch (devlink_port->attrs.flavour) {
+ case DEVLINK_PORT_FLAVOUR_PCI_PF:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
+ attrs->pci_pf.controller) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
+ return -EMSGSIZE;
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
+ return -EMSGSIZE;
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_VF:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
+ attrs->pci_vf.controller) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
+ return -EMSGSIZE;
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
+ return -EMSGSIZE;
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_SF:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
+ attrs->pci_sf.controller) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
+ attrs->pci_sf.pf) ||
+ nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
+ attrs->pci_sf.sf))
+ return -EMSGSIZE;
+ break;
+ case DEVLINK_PORT_FLAVOUR_PHYSICAL:
+ case DEVLINK_PORT_FLAVOUR_CPU:
+ case DEVLINK_PORT_FLAVOUR_DSA:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
+ attrs->phys.port_number))
+ return -EMSGSIZE;
+ if (!attrs->split)
+ return 0;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
+ attrs->phys.port_number))
+ return -EMSGSIZE;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
+ attrs->phys.split_subport_number))
+ return -EMSGSIZE;
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int devlink_port_fn_hw_addr_fill(const struct devlink_ops *ops,
+ struct devlink_port *port,
+ struct sk_buff *msg,
+ struct netlink_ext_ack *extack,
+ bool *msg_updated)
+{
+ u8 hw_addr[MAX_ADDR_LEN];
+ int hw_addr_len;
+ int err;
+
+ if (!ops->port_function_hw_addr_get)
+ return 0;
+
+ err = ops->port_function_hw_addr_get(port, hw_addr, &hw_addr_len,
+ extack);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+ err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
+ if (err)
+ return err;
+ *msg_updated = true;
+ return 0;
+}
+
+static int devlink_nl_rate_fill(struct sk_buff *msg,
+ struct devlink_rate *devlink_rate,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags, struct netlink_ext_ack *extack)
+{
+ struct devlink *devlink = devlink_rate->devlink;
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type))
+ goto nla_put_failure;
+
+ if (devlink_rate_is_leaf(devlink_rate)) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
+ devlink_rate->devlink_port->index))
+ goto nla_put_failure;
+ } else if (devlink_rate_is_node(devlink_rate)) {
+ if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME,
+ devlink_rate->name))
+ goto nla_put_failure;
+ }
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE,
+ devlink_rate->tx_share, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX,
+ devlink_rate->tx_max, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u32(msg, DEVLINK_ATTR_RATE_TX_PRIORITY,
+ devlink_rate->tx_priority))
+ goto nla_put_failure;
+
+ if (nla_put_u32(msg, DEVLINK_ATTR_RATE_TX_WEIGHT,
+ devlink_rate->tx_weight))
+ goto nla_put_failure;
+
+ if (devlink_rate->parent)
+ if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME,
+ devlink_rate->parent->name))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static bool
+devlink_port_fn_state_valid(enum devlink_port_fn_state state)
+{
+ return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
+ state == DEVLINK_PORT_FN_STATE_ACTIVE;
+}
+
+static bool
+devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
+{
+ return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
+ opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
+}
+
+static int devlink_port_fn_state_fill(const struct devlink_ops *ops,
+ struct devlink_port *port,
+ struct sk_buff *msg,
+ struct netlink_ext_ack *extack,
+ bool *msg_updated)
+{
+ enum devlink_port_fn_opstate opstate;
+ enum devlink_port_fn_state state;
+ int err;
+
+ if (!ops->port_fn_state_get)
+ return 0;
+
+ err = ops->port_fn_state_get(port, &state, &opstate, extack);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+ if (!devlink_port_fn_state_valid(state)) {
+ WARN_ON_ONCE(1);
+ NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
+ return -EINVAL;
+ }
+ if (!devlink_port_fn_opstate_valid(opstate)) {
+ WARN_ON_ONCE(1);
+ NL_SET_ERR_MSG_MOD(extack,
+ "Invalid operational state read from driver");
+ return -EINVAL;
+ }
+ if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
+ nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
+ return -EMSGSIZE;
+ *msg_updated = true;
+ return 0;
+}
+
+static int
+devlink_port_fn_mig_set(struct devlink_port *devlink_port, bool enable,
+ struct netlink_ext_ack *extack)
+{
+ const struct devlink_ops *ops = devlink_port->devlink->ops;
+
+ return ops->port_fn_migratable_set(devlink_port, enable, extack);
+}
+
+static int
+devlink_port_fn_roce_set(struct devlink_port *devlink_port, bool enable,
+ struct netlink_ext_ack *extack)
+{
+ const struct devlink_ops *ops = devlink_port->devlink->ops;
+
+ return ops->port_fn_roce_set(devlink_port, enable, extack);
+}
+
+static int devlink_port_fn_caps_set(struct devlink_port *devlink_port,
+ const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ struct nla_bitfield32 caps;
+ u32 caps_value;
+ int err;
+
+ caps = nla_get_bitfield32(attr);
+ caps_value = caps.value & caps.selector;
+ if (caps.selector & DEVLINK_PORT_FN_CAP_ROCE) {
+ err = devlink_port_fn_roce_set(devlink_port,
+ caps_value & DEVLINK_PORT_FN_CAP_ROCE,
+ extack);
+ if (err)
+ return err;
+ }
+ if (caps.selector & DEVLINK_PORT_FN_CAP_MIGRATABLE) {
+ err = devlink_port_fn_mig_set(devlink_port, caps_value &
+ DEVLINK_PORT_FN_CAP_MIGRATABLE,
+ extack);
+ if (err)
+ return err;
+ }
+ return 0;
+}
+
+static int
+devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
+ struct netlink_ext_ack *extack)
+{
+ const struct devlink_ops *ops;
+ struct nlattr *function_attr;
+ bool msg_updated = false;
+ int err;
+
+ function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
+ if (!function_attr)
+ return -EMSGSIZE;
+
+ ops = port->devlink->ops;
+ err = devlink_port_fn_hw_addr_fill(ops, port, msg, extack,
+ &msg_updated);
+ if (err)
+ goto out;
+ err = devlink_port_fn_caps_fill(ops, port, msg, extack,
+ &msg_updated);
+ if (err)
+ goto out;
+ err = devlink_port_fn_state_fill(ops, port, msg, extack, &msg_updated);
+out:
+ if (err || !msg_updated)
+ nla_nest_cancel(msg, function_attr);
+ else
+ nla_nest_end(msg, function_attr);
+ return err;
+}
+
+static int devlink_nl_port_fill(struct sk_buff *msg,
+ struct devlink_port *devlink_port,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags, struct netlink_ext_ack *extack)
+{
+ struct devlink *devlink = devlink_port->devlink;
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
+ goto nla_put_failure;
+
+ spin_lock_bh(&devlink_port->type_lock);
+ if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
+ goto nla_put_failure_type_locked;
+ if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
+ devlink_port->desired_type))
+ goto nla_put_failure_type_locked;
+ if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
+ if (devlink_port->type_eth.netdev &&
+ (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
+ devlink_port->type_eth.ifindex) ||
+ nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
+ devlink_port->type_eth.ifname)))
+ goto nla_put_failure_type_locked;
+ }
+ if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
+ struct ib_device *ibdev = devlink_port->type_ib.ibdev;
+
+ if (ibdev &&
+ nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
+ ibdev->name))
+ goto nla_put_failure_type_locked;
+ }
+ spin_unlock_bh(&devlink_port->type_lock);
+ if (devlink_nl_port_attrs_put(msg, devlink_port))
+ goto nla_put_failure;
+ if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
+ goto nla_put_failure;
+ if (devlink_port->linecard &&
+ nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX,
+ devlink_port->linecard->index))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure_type_locked:
+ spin_unlock_bh(&devlink_port->type_lock);
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_port_notify(struct devlink_port *devlink_port,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = devlink_port->devlink;
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
+
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static void devlink_rate_notify(struct devlink_rate *devlink_rate,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = devlink_rate->devlink;
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL);
+
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_rate *devlink_rate;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
+ enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
+ u32 id = NETLINK_CB(cb->skb).portid;
+
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI, NULL);
+ if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_nl_cmd_rate_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_rate *devlink_rate = info->user_ptr[1];
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW,
+ info->snd_portid, info->snd_seq, 0,
+ info->extack);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static bool
+devlink_rate_is_parent_node(struct devlink_rate *devlink_rate,
+ struct devlink_rate *parent)
+{
+ while (parent) {
+ if (parent == devlink_rate)
+ return true;
+ parent = parent->parent;
+ }
+ return false;
+}
+
+static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ if (idx < start) {
+ idx++;
+ devlink_put(devlink);
+ continue;
+ }
+
+ devl_lock(devlink);
+ err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI);
+ devl_unlock(devlink);
+ devlink_put(devlink);
+
+ if (err)
+ goto out;
+ idx++;
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
+ info->snd_portid, info->snd_seq, 0,
+ info->extack);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ struct devlink_port *devlink_port;
+ unsigned long index, port_index;
+ int start = cb->args[0];
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ xa_for_each(&devlink->ports, port_index, devlink_port) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_port_fill(msg, devlink_port,
+ DEVLINK_CMD_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI, cb->extack);
+ if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_port_type_set(struct devlink_port *devlink_port,
+ enum devlink_port_type port_type)
+
+{
+ int err;
+
+ if (!devlink_port->devlink->ops->port_type_set)
+ return -EOPNOTSUPP;
+
+ if (port_type == devlink_port->type)
+ return 0;
+
+ err = devlink_port->devlink->ops->port_type_set(devlink_port,
+ port_type);
+ if (err)
+ return err;
+
+ devlink_port->desired_type = port_type;
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+ return 0;
+}
+
+static int devlink_port_function_hw_addr_set(struct devlink_port *port,
+ const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ const struct devlink_ops *ops = port->devlink->ops;
+ const u8 *hw_addr;
+ int hw_addr_len;
+
+ hw_addr = nla_data(attr);
+ hw_addr_len = nla_len(attr);
+ if (hw_addr_len > MAX_ADDR_LEN) {
+ NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
+ return -EINVAL;
+ }
+ if (port->type == DEVLINK_PORT_TYPE_ETH) {
+ if (hw_addr_len != ETH_ALEN) {
+ NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
+ return -EINVAL;
+ }
+ if (!is_unicast_ether_addr(hw_addr)) {
+ NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
+ return -EINVAL;
+ }
+ }
+
+ return ops->port_function_hw_addr_set(port, hw_addr, hw_addr_len,
+ extack);
+}
+
+static int devlink_port_fn_state_set(struct devlink_port *port,
+ const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ enum devlink_port_fn_state state;
+ const struct devlink_ops *ops;
+
+ state = nla_get_u8(attr);
+ ops = port->devlink->ops;
+ return ops->port_fn_state_set(port, state, extack);
+}
+
+static int devlink_port_function_validate(struct devlink_port *devlink_port,
+ struct nlattr **tb,
+ struct netlink_ext_ack *extack)
+{
+ const struct devlink_ops *ops = devlink_port->devlink->ops;
+ struct nlattr *attr;
+
+ if (tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] &&
+ !ops->port_function_hw_addr_set) {
+ NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR],
+ "Port doesn't support function attributes");
+ return -EOPNOTSUPP;
+ }
+ if (tb[DEVLINK_PORT_FN_ATTR_STATE] && !ops->port_fn_state_set) {
+ NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR],
+ "Function does not support state setting");
+ return -EOPNOTSUPP;
+ }
+ attr = tb[DEVLINK_PORT_FN_ATTR_CAPS];
+ if (attr) {
+ struct nla_bitfield32 caps;
+
+ caps = nla_get_bitfield32(attr);
+ if (caps.selector & DEVLINK_PORT_FN_CAP_ROCE &&
+ !ops->port_fn_roce_set) {
+ NL_SET_ERR_MSG_ATTR(extack, attr,
+ "Port doesn't support RoCE function attribute");
+ return -EOPNOTSUPP;
+ }
+ if (caps.selector & DEVLINK_PORT_FN_CAP_MIGRATABLE) {
+ if (!ops->port_fn_migratable_set) {
+ NL_SET_ERR_MSG_ATTR(extack, attr,
+ "Port doesn't support migratable function attribute");
+ return -EOPNOTSUPP;
+ }
+ if (devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) {
+ NL_SET_ERR_MSG_ATTR(extack, attr,
+ "migratable function attribute supported for VFs only");
+ return -EOPNOTSUPP;
+ }
+ }
+ }
+ return 0;
+}
+
+static int devlink_port_function_set(struct devlink_port *port,
+ const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
+ int err;
+
+ err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
+ devlink_function_nl_policy, extack);
+ if (err < 0) {
+ NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
+ return err;
+ }
+
+ err = devlink_port_function_validate(port, tb, extack);
+ if (err)
+ return err;
+
+ attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
+ if (attr) {
+ err = devlink_port_function_hw_addr_set(port, attr, extack);
+ if (err)
+ return err;
+ }
+
+ attr = tb[DEVLINK_PORT_FN_ATTR_CAPS];
+ if (attr) {
+ err = devlink_port_fn_caps_set(port, attr, extack);
+ if (err)
+ return err;
+ }
+
+ /* Keep this as the last function attribute set, so that when
+ * multiple port function attributes are set along with state,
+ * Those can be applied first before activating the state.
+ */
+ attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
+ if (attr)
+ err = devlink_port_fn_state_set(port, attr, extack);
+
+ if (!err)
+ devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
+ return err;
+}
+
+static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ int err;
+
+ if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
+ enum devlink_port_type port_type;
+
+ port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
+ err = devlink_port_type_set(devlink_port, port_type);
+ if (err)
+ return err;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
+ struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
+ struct netlink_ext_ack *extack = info->extack;
+
+ err = devlink_port_function_set(devlink_port, attr, extack);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = info->user_ptr[0];
+ u32 count;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PORT_SPLIT_COUNT))
+ return -EINVAL;
+ if (!devlink->ops->port_split)
+ return -EOPNOTSUPP;
+
+ count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
+
+ if (!devlink_port->attrs.splittable) {
+ /* Split ports cannot be split. */
+ if (devlink_port->attrs.split)
+ NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
+ else
+ NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
+ return -EINVAL;
+ }
+
+ if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
+ return -EINVAL;
+ }
+
+ return devlink->ops->port_split(devlink, devlink_port, count,
+ info->extack);
+}
+
+static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = info->user_ptr[0];
+
+ if (!devlink->ops->port_unsplit)
+ return -EOPNOTSUPP;
+ return devlink->ops->port_unsplit(devlink, devlink_port, info->extack);
+}
+
+static int devlink_port_new_notify(struct devlink *devlink,
+ unsigned int port_index,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port;
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ lockdep_assert_held(&devlink->lock);
+ devlink_port = devlink_port_get_by_index(devlink, port_index);
+ if (!devlink_port) {
+ err = -ENODEV;
+ goto out;
+ }
+
+ err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
+ info->snd_portid, info->snd_seq, 0, NULL);
+ if (err)
+ goto out;
+
+ return genlmsg_reply(msg, info);
+
+out:
+ nlmsg_free(msg);
+ return err;
+}
+
+static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink_port_new_attrs new_attrs = {};
+ struct devlink *devlink = info->user_ptr[0];
+ unsigned int new_port_index;
+ int err;
+
+ if (!devlink->ops->port_new || !devlink->ops->port_del)
+ return -EOPNOTSUPP;
+
+ if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
+ !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
+ NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified");
+ return -EINVAL;
+ }
+ new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
+ new_attrs.pfnum =
+ nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ /* Port index of the new port being created by driver. */
+ new_attrs.port_index =
+ nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+ new_attrs.port_index_valid = true;
+ }
+ if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
+ new_attrs.controller =
+ nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
+ new_attrs.controller_valid = true;
+ }
+ if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
+ info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
+ new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
+ new_attrs.sfnum_valid = true;
+ }
+
+ err = devlink->ops->port_new(devlink, &new_attrs, extack,
+ &new_port_index);
+ if (err)
+ return err;
+
+ err = devlink_port_new_notify(devlink, new_port_index, info);
+ if (err && err != -ENODEV) {
+ /* Fail to send the response; destroy newly created port. */
+ devlink->ops->port_del(devlink, new_port_index, extack);
+ }
+ return err;
+}
+
+static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ unsigned int port_index;
+
+ if (!devlink->ops->port_del)
+ return -EOPNOTSUPP;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PORT_INDEX)) {
+ NL_SET_ERR_MSG_MOD(extack, "Port index is not specified");
+ return -EINVAL;
+ }
+ port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ return devlink->ops->port_del(devlink, port_index, extack);
+}
+
+static int
+devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate,
+ struct genl_info *info,
+ struct nlattr *nla_parent)
+{
+ struct devlink *devlink = devlink_rate->devlink;
+ const char *parent_name = nla_data(nla_parent);
+ const struct devlink_ops *ops = devlink->ops;
+ size_t len = strlen(parent_name);
+ struct devlink_rate *parent;
+ int err = -EOPNOTSUPP;
+
+ parent = devlink_rate->parent;
+
+ if (parent && !len) {
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_parent_set(devlink_rate, NULL,
+ devlink_rate->priv, NULL,
+ info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_parent_set(devlink_rate, NULL,
+ devlink_rate->priv, NULL,
+ info->extack);
+ if (err)
+ return err;
+
+ refcount_dec(&parent->refcnt);
+ devlink_rate->parent = NULL;
+ } else if (len) {
+ parent = devlink_rate_node_get_by_name(devlink, parent_name);
+ if (IS_ERR(parent))
+ return -ENODEV;
+
+ if (parent == devlink_rate) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Parent to self is not allowed");
+ return -EINVAL;
+ }
+
+ if (devlink_rate_is_node(devlink_rate) &&
+ devlink_rate_is_parent_node(devlink_rate, parent->parent)) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Node is already a parent of parent node.");
+ return -EEXIST;
+ }
+
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_parent_set(devlink_rate, parent,
+ devlink_rate->priv, parent->priv,
+ info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_parent_set(devlink_rate, parent,
+ devlink_rate->priv, parent->priv,
+ info->extack);
+ if (err)
+ return err;
+
+ if (devlink_rate->parent)
+ /* we're reassigning to other parent in this case */
+ refcount_dec(&devlink_rate->parent->refcnt);
+
+ refcount_inc(&parent->refcnt);
+ devlink_rate->parent = parent;
+ }
+
+ return 0;
+}
+
+static int devlink_nl_rate_set(struct devlink_rate *devlink_rate,
+ const struct devlink_ops *ops,
+ struct genl_info *info)
+{
+ struct nlattr *nla_parent, **attrs = info->attrs;
+ int err = -EOPNOTSUPP;
+ u32 priority;
+ u32 weight;
+ u64 rate;
+
+ if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) {
+ rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]);
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv,
+ rate, info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv,
+ rate, info->extack);
+ if (err)
+ return err;
+ devlink_rate->tx_share = rate;
+ }
+
+ if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) {
+ rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]);
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv,
+ rate, info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv,
+ rate, info->extack);
+ if (err)
+ return err;
+ devlink_rate->tx_max = rate;
+ }
+
+ if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY]) {
+ priority = nla_get_u32(attrs[DEVLINK_ATTR_RATE_TX_PRIORITY]);
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_tx_priority_set(devlink_rate, devlink_rate->priv,
+ priority, info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_tx_priority_set(devlink_rate, devlink_rate->priv,
+ priority, info->extack);
+
+ if (err)
+ return err;
+ devlink_rate->tx_priority = priority;
+ }
+
+ if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT]) {
+ weight = nla_get_u32(attrs[DEVLINK_ATTR_RATE_TX_WEIGHT]);
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_tx_weight_set(devlink_rate, devlink_rate->priv,
+ weight, info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_tx_weight_set(devlink_rate, devlink_rate->priv,
+ weight, info->extack);
+
+ if (err)
+ return err;
+ devlink_rate->tx_weight = weight;
+ }
+
+ nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME];
+ if (nla_parent) {
+ err = devlink_nl_rate_parent_node_set(devlink_rate, info,
+ nla_parent);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops,
+ struct genl_info *info,
+ enum devlink_rate_type type)
+{
+ struct nlattr **attrs = info->attrs;
+
+ if (type == DEVLINK_RATE_TYPE_LEAF) {
+ if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) {
+ NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the leafs");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) {
+ NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the leafs");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
+ !ops->rate_leaf_parent_set) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the leafs");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY] && !ops->rate_leaf_tx_priority_set) {
+ NL_SET_ERR_MSG_ATTR(info->extack,
+ attrs[DEVLINK_ATTR_RATE_TX_PRIORITY],
+ "TX priority set isn't supported for the leafs");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT] && !ops->rate_leaf_tx_weight_set) {
+ NL_SET_ERR_MSG_ATTR(info->extack,
+ attrs[DEVLINK_ATTR_RATE_TX_WEIGHT],
+ "TX weight set isn't supported for the leafs");
+ return false;
+ }
+ } else if (type == DEVLINK_RATE_TYPE_NODE) {
+ if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) {
+ NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the nodes");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) {
+ NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the nodes");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
+ !ops->rate_node_parent_set) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the nodes");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY] && !ops->rate_node_tx_priority_set) {
+ NL_SET_ERR_MSG_ATTR(info->extack,
+ attrs[DEVLINK_ATTR_RATE_TX_PRIORITY],
+ "TX priority set isn't supported for the nodes");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT] && !ops->rate_node_tx_weight_set) {
+ NL_SET_ERR_MSG_ATTR(info->extack,
+ attrs[DEVLINK_ATTR_RATE_TX_WEIGHT],
+ "TX weight set isn't supported for the nodes");
+ return false;
+ }
+ } else {
+ WARN(1, "Unknown type of rate object");
+ return false;
+ }
+
+ return true;
+}
+
+static int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_rate *devlink_rate = info->user_ptr[1];
+ struct devlink *devlink = devlink_rate->devlink;
+ const struct devlink_ops *ops = devlink->ops;
+ int err;
+
+ if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type))
+ return -EOPNOTSUPP;
+
+ err = devlink_nl_rate_set(devlink_rate, ops, info);
+
+ if (!err)
+ devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
+ return err;
+}
+
+static int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_rate *rate_node;
+ const struct devlink_ops *ops;
+ int err;
+
+ ops = devlink->ops;
+ if (!ops || !ops->rate_node_new || !ops->rate_node_del) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Rate nodes aren't supported");
+ return -EOPNOTSUPP;
+ }
+
+ if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE))
+ return -EOPNOTSUPP;
+
+ rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs);
+ if (!IS_ERR(rate_node))
+ return -EEXIST;
+ else if (rate_node == ERR_PTR(-EINVAL))
+ return -EINVAL;
+
+ rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
+ if (!rate_node)
+ return -ENOMEM;
+
+ rate_node->devlink = devlink;
+ rate_node->type = DEVLINK_RATE_TYPE_NODE;
+ rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL);
+ if (!rate_node->name) {
+ err = -ENOMEM;
+ goto err_strdup;
+ }
+
+ err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack);
+ if (err)
+ goto err_node_new;
+
+ err = devlink_nl_rate_set(rate_node, ops, info);
+ if (err)
+ goto err_rate_set;
+
+ refcount_set(&rate_node->refcnt, 1);
+ list_add(&rate_node->list, &devlink->rate_list);
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
+ return 0;
+
+err_rate_set:
+ ops->rate_node_del(rate_node, rate_node->priv, info->extack);
+err_node_new:
+ kfree(rate_node->name);
+err_strdup:
+ kfree(rate_node);
+ return err;
+}
+
+static int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_rate *rate_node = info->user_ptr[1];
+ struct devlink *devlink = rate_node->devlink;
+ const struct devlink_ops *ops = devlink->ops;
+ int err;
+
+ if (refcount_read(&rate_node->refcnt) > 1) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Node has children. Cannot delete node.");
+ return -EBUSY;
+ }
+
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
+ err = ops->rate_node_del(rate_node, rate_node->priv, info->extack);
+ if (rate_node->parent)
+ refcount_dec(&rate_node->parent->refcnt);
+ list_del(&rate_node->list);
+ kfree(rate_node->name);
+ kfree(rate_node);
+ return err;
+}
+
+struct devlink_linecard_type {
+ const char *type;
+ const void *priv;
+};
+
+static int devlink_nl_linecard_fill(struct sk_buff *msg,
+ struct devlink *devlink,
+ struct devlink_linecard *linecard,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags,
+ struct netlink_ext_ack *extack)
+{
+ struct devlink_linecard_type *linecard_type;
+ struct nlattr *attr;
+ void *hdr;
+ int i;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX, linecard->index))
+ goto nla_put_failure;
+ if (nla_put_u8(msg, DEVLINK_ATTR_LINECARD_STATE, linecard->state))
+ goto nla_put_failure;
+ if (linecard->type &&
+ nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE, linecard->type))
+ goto nla_put_failure;
+
+ if (linecard->types_count) {
+ attr = nla_nest_start(msg,
+ DEVLINK_ATTR_LINECARD_SUPPORTED_TYPES);
+ if (!attr)
+ goto nla_put_failure;
+ for (i = 0; i < linecard->types_count; i++) {
+ linecard_type = &linecard->types[i];
+ if (nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE,
+ linecard_type->type)) {
+ nla_nest_cancel(msg, attr);
+ goto nla_put_failure;
+ }
+ }
+ nla_nest_end(msg, attr);
+ }
+
+ if (linecard->nested_devlink &&
+ devlink_nl_put_nested_handle(msg, linecard->nested_devlink))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_linecard_notify(struct devlink_linecard *linecard,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = linecard->devlink;
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_LINECARD_NEW &&
+ cmd != DEVLINK_CMD_LINECARD_DEL);
+
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_linecard_fill(msg, devlink, linecard, cmd, 0, 0, 0,
+ NULL);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int devlink_nl_cmd_linecard_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_linecard *linecard = info->user_ptr[1];
+ struct devlink *devlink = linecard->devlink;
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ mutex_lock(&linecard->state_lock);
+ err = devlink_nl_linecard_fill(msg, devlink, linecard,
+ DEVLINK_CMD_LINECARD_NEW,
+ info->snd_portid, info->snd_seq, 0,
+ info->extack);
+ mutex_unlock(&linecard->state_lock);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_linecard *linecard;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ mutex_lock(&devlink->linecards_lock);
+ list_for_each_entry(linecard, &devlink->linecard_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ mutex_lock(&linecard->state_lock);
+ err = devlink_nl_linecard_fill(msg, devlink, linecard,
+ DEVLINK_CMD_LINECARD_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI,
+ cb->extack);
+ mutex_unlock(&linecard->state_lock);
+ if (err) {
+ mutex_unlock(&devlink->linecards_lock);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ mutex_unlock(&devlink->linecards_lock);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static struct devlink_linecard_type *
+devlink_linecard_type_lookup(struct devlink_linecard *linecard,
+ const char *type)
+{
+ struct devlink_linecard_type *linecard_type;
+ int i;
+
+ for (i = 0; i < linecard->types_count; i++) {
+ linecard_type = &linecard->types[i];
+ if (!strcmp(type, linecard_type->type))
+ return linecard_type;
+ }
+ return NULL;
+}
+
+static int devlink_linecard_type_set(struct devlink_linecard *linecard,
+ const char *type,
+ struct netlink_ext_ack *extack)
+{
+ const struct devlink_linecard_ops *ops = linecard->ops;
+ struct devlink_linecard_type *linecard_type;
+ int err;
+
+ mutex_lock(&linecard->state_lock);
+ if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) {
+ NL_SET_ERR_MSG_MOD(extack, "Line card is currently being provisioned");
+ err = -EBUSY;
+ goto out;
+ }
+ if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) {
+ NL_SET_ERR_MSG_MOD(extack, "Line card is currently being unprovisioned");
+ err = -EBUSY;
+ goto out;
+ }
+
+ linecard_type = devlink_linecard_type_lookup(linecard, type);
+ if (!linecard_type) {
+ NL_SET_ERR_MSG_MOD(extack, "Unsupported line card type provided");
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (linecard->state != DEVLINK_LINECARD_STATE_UNPROVISIONED &&
+ linecard->state != DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) {
+ NL_SET_ERR_MSG_MOD(extack, "Line card already provisioned");
+ err = -EBUSY;
+ /* Check if the line card is provisioned in the same
+ * way the user asks. In case it is, make the operation
+ * to return success.
+ */
+ if (ops->same_provision &&
+ ops->same_provision(linecard, linecard->priv,
+ linecard_type->type,
+ linecard_type->priv))
+ err = 0;
+ goto out;
+ }
+
+ linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING;
+ linecard->type = linecard_type->type;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+ err = ops->provision(linecard, linecard->priv, linecard_type->type,
+ linecard_type->priv, extack);
+ if (err) {
+ /* Provisioning failed. Assume the linecard is unprovisioned
+ * for future operations.
+ */
+ mutex_lock(&linecard->state_lock);
+ linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
+ linecard->type = NULL;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+ }
+ return err;
+
+out:
+ mutex_unlock(&linecard->state_lock);
+ return err;
+}
+
+static int devlink_linecard_type_unset(struct devlink_linecard *linecard,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+
+ mutex_lock(&linecard->state_lock);
+ if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) {
+ NL_SET_ERR_MSG_MOD(extack, "Line card is currently being provisioned");
+ err = -EBUSY;
+ goto out;
+ }
+ if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) {
+ NL_SET_ERR_MSG_MOD(extack, "Line card is currently being unprovisioned");
+ err = -EBUSY;
+ goto out;
+ }
+ if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) {
+ linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
+ linecard->type = NULL;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ err = 0;
+ goto out;
+ }
+
+ if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONED) {
+ NL_SET_ERR_MSG_MOD(extack, "Line card is not provisioned");
+ err = 0;
+ goto out;
+ }
+ linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONING;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+ err = linecard->ops->unprovision(linecard, linecard->priv,
+ extack);
+ if (err) {
+ /* Unprovisioning failed. Assume the linecard is unprovisioned
+ * for future operations.
+ */
+ mutex_lock(&linecard->state_lock);
+ linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
+ linecard->type = NULL;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+ }
+ return err;
+
+out:
+ mutex_unlock(&linecard->state_lock);
+ return err;
+}
+
+static int devlink_nl_cmd_linecard_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_linecard *linecard = info->user_ptr[1];
+ struct netlink_ext_ack *extack = info->extack;
+ int err;
+
+ if (info->attrs[DEVLINK_ATTR_LINECARD_TYPE]) {
+ const char *type;
+
+ type = nla_data(info->attrs[DEVLINK_ATTR_LINECARD_TYPE]);
+ if (strcmp(type, "")) {
+ err = devlink_linecard_type_set(linecard, type, extack);
+ if (err)
+ return err;
+ } else {
+ err = devlink_linecard_type_unset(linecard, extack);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
+ struct devlink_sb *devlink_sb,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags)
+{
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
+ devlink_sb->ingress_pools_count))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
+ devlink_sb->egress_pools_count))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
+ devlink_sb->ingress_tc_count))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
+ devlink_sb->egress_tc_count))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_sb *devlink_sb;
+ struct sk_buff *msg;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
+ DEVLINK_CMD_SB_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ struct devlink_sb *devlink_sb;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
+ DEVLINK_CMD_SB_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
+ struct devlink_sb *devlink_sb,
+ u16 pool_index, enum devlink_command cmd,
+ u32 portid, u32 seq, int flags)
+{
+ struct devlink_sb_pool_info pool_info;
+ void *hdr;
+ int err;
+
+ err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
+ pool_index, &pool_info);
+ if (err)
+ return err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
+ goto nla_put_failure;
+ if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
+ goto nla_put_failure;
+ if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
+ pool_info.threshold_type))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
+ pool_info.cell_size))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_sb *devlink_sb;
+ struct sk_buff *msg;
+ u16 pool_index;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
+ &pool_index);
+ if (err)
+ return err;
+
+ if (!devlink->ops->sb_pool_get)
+ return -EOPNOTSUPP;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
+ DEVLINK_CMD_SB_POOL_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
+ struct devlink *devlink,
+ struct devlink_sb *devlink_sb,
+ u32 portid, u32 seq)
+{
+ u16 pool_count = devlink_sb_pool_count(devlink_sb);
+ u16 pool_index;
+ int err;
+
+ for (pool_index = 0; pool_index < pool_count; pool_index++) {
+ if (*p_idx < start) {
+ (*p_idx)++;
+ continue;
+ }
+ err = devlink_nl_sb_pool_fill(msg, devlink,
+ devlink_sb,
+ pool_index,
+ DEVLINK_CMD_SB_POOL_NEW,
+ portid, seq, NLM_F_MULTI);
+ if (err)
+ return err;
+ (*p_idx)++;
+ }
+ return 0;
+}
+
+static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ struct devlink_sb *devlink_sb;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ if (!devlink->ops->sb_pool_get)
+ goto retry;
+
+ devl_lock(devlink);
+ list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
+ err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
+ devlink_sb,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq);
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ }
+ devl_unlock(devlink);
+retry:
+ devlink_put(devlink);
+ }
+out:
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
+ u16 pool_index, u32 size,
+ enum devlink_sb_threshold_type threshold_type,
+ struct netlink_ext_ack *extack)
+
+{
+ const struct devlink_ops *ops = devlink->ops;
+
+ if (ops->sb_pool_set)
+ return ops->sb_pool_set(devlink, sb_index, pool_index,
+ size, threshold_type, extack);
+ return -EOPNOTSUPP;
+}
+
+static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ enum devlink_sb_threshold_type threshold_type;
+ struct devlink_sb *devlink_sb;
+ u16 pool_index;
+ u32 size;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
+ &pool_index);
+ if (err)
+ return err;
+
+ err = devlink_sb_th_type_get_from_info(info, &threshold_type);
+ if (err)
+ return err;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SB_POOL_SIZE))
+ return -EINVAL;
+
+ size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
+ return devlink_sb_pool_set(devlink, devlink_sb->index,
+ pool_index, size, threshold_type,
+ info->extack);
+}
+
+static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
+ struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ struct devlink_sb *devlink_sb,
+ u16 pool_index,
+ enum devlink_command cmd,
+ u32 portid, u32 seq, int flags)
+{
+ const struct devlink_ops *ops = devlink->ops;
+ u32 threshold;
+ void *hdr;
+ int err;
+
+ err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
+ pool_index, &threshold);
+ if (err)
+ return err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
+ goto nla_put_failure;
+
+ if (ops->sb_occ_port_pool_get) {
+ u32 cur;
+ u32 max;
+
+ err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
+ pool_index, &cur, &max);
+ if (err && err != -EOPNOTSUPP)
+ goto sb_occ_get_failure;
+ if (!err) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
+ goto nla_put_failure;
+ }
+ }
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ err = -EMSGSIZE;
+sb_occ_get_failure:
+ genlmsg_cancel(msg, hdr);
+ return err;
+}
+
+static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = devlink_port->devlink;
+ struct devlink_sb *devlink_sb;
+ struct sk_buff *msg;
+ u16 pool_index;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
+ &pool_index);
+ if (err)
+ return err;
+
+ if (!devlink->ops->sb_port_pool_get)
+ return -EOPNOTSUPP;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
+ devlink_sb, pool_index,
+ DEVLINK_CMD_SB_PORT_POOL_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
+ struct devlink *devlink,
+ struct devlink_sb *devlink_sb,
+ u32 portid, u32 seq)
+{
+ struct devlink_port *devlink_port;
+ u16 pool_count = devlink_sb_pool_count(devlink_sb);
+ unsigned long port_index;
+ u16 pool_index;
+ int err;
+
+ xa_for_each(&devlink->ports, port_index, devlink_port) {
+ for (pool_index = 0; pool_index < pool_count; pool_index++) {
+ if (*p_idx < start) {
+ (*p_idx)++;
+ continue;
+ }
+ err = devlink_nl_sb_port_pool_fill(msg, devlink,
+ devlink_port,
+ devlink_sb,
+ pool_index,
+ DEVLINK_CMD_SB_PORT_POOL_NEW,
+ portid, seq,
+ NLM_F_MULTI);
+ if (err)
+ return err;
+ (*p_idx)++;
+ }
+ }
+ return 0;
+}
+
+static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ struct devlink_sb *devlink_sb;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ if (!devlink->ops->sb_port_pool_get)
+ goto retry;
+
+ devl_lock(devlink);
+ list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
+ err = __sb_port_pool_get_dumpit(msg, start, &idx,
+ devlink, devlink_sb,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq);
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ }
+ devl_unlock(devlink);
+retry:
+ devlink_put(devlink);
+ }
+out:
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
+ unsigned int sb_index, u16 pool_index,
+ u32 threshold,
+ struct netlink_ext_ack *extack)
+
+{
+ const struct devlink_ops *ops = devlink_port->devlink->ops;
+
+ if (ops->sb_port_pool_set)
+ return ops->sb_port_pool_set(devlink_port, sb_index,
+ pool_index, threshold, extack);
+ return -EOPNOTSUPP;
+}
+
+static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_sb *devlink_sb;
+ u16 pool_index;
+ u32 threshold;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
+ &pool_index);
+ if (err)
+ return err;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SB_THRESHOLD))
+ return -EINVAL;
+
+ threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
+ return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
+ pool_index, threshold, info->extack);
+}
+
+static int
+devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ struct devlink_sb *devlink_sb, u16 tc_index,
+ enum devlink_sb_pool_type pool_type,
+ enum devlink_command cmd,
+ u32 portid, u32 seq, int flags)
+{
+ const struct devlink_ops *ops = devlink->ops;
+ u16 pool_index;
+ u32 threshold;
+ void *hdr;
+ int err;
+
+ err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
+ tc_index, pool_type,
+ &pool_index, &threshold);
+ if (err)
+ return err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
+ goto nla_put_failure;
+ if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
+ goto nla_put_failure;
+
+ if (ops->sb_occ_tc_port_bind_get) {
+ u32 cur;
+ u32 max;
+
+ err = ops->sb_occ_tc_port_bind_get(devlink_port,
+ devlink_sb->index,
+ tc_index, pool_type,
+ &cur, &max);
+ if (err && err != -EOPNOTSUPP)
+ return err;
+ if (!err) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
+ goto nla_put_failure;
+ }
+ }
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = devlink_port->devlink;
+ struct devlink_sb *devlink_sb;
+ struct sk_buff *msg;
+ enum devlink_sb_pool_type pool_type;
+ u16 tc_index;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ err = devlink_sb_pool_type_get_from_info(info, &pool_type);
+ if (err)
+ return err;
+
+ err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
+ pool_type, &tc_index);
+ if (err)
+ return err;
+
+ if (!devlink->ops->sb_tc_pool_bind_get)
+ return -EOPNOTSUPP;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
+ devlink_sb, tc_index, pool_type,
+ DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
+ info->snd_portid,
+ info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
+ int start, int *p_idx,
+ struct devlink *devlink,
+ struct devlink_sb *devlink_sb,
+ u32 portid, u32 seq)
+{
+ struct devlink_port *devlink_port;
+ unsigned long port_index;
+ u16 tc_index;
+ int err;
+
+ xa_for_each(&devlink->ports, port_index, devlink_port) {
+ for (tc_index = 0;
+ tc_index < devlink_sb->ingress_tc_count; tc_index++) {
+ if (*p_idx < start) {
+ (*p_idx)++;
+ continue;
+ }
+ err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
+ devlink_port,
+ devlink_sb,
+ tc_index,
+ DEVLINK_SB_POOL_TYPE_INGRESS,
+ DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
+ portid, seq,
+ NLM_F_MULTI);
+ if (err)
+ return err;
+ (*p_idx)++;
+ }
+ for (tc_index = 0;
+ tc_index < devlink_sb->egress_tc_count; tc_index++) {
+ if (*p_idx < start) {
+ (*p_idx)++;
+ continue;
+ }
+ err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
+ devlink_port,
+ devlink_sb,
+ tc_index,
+ DEVLINK_SB_POOL_TYPE_EGRESS,
+ DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
+ portid, seq,
+ NLM_F_MULTI);
+ if (err)
+ return err;
+ (*p_idx)++;
+ }
+ }
+ return 0;
+}
+
+static int
+devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ struct devlink_sb *devlink_sb;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ if (!devlink->ops->sb_tc_pool_bind_get)
+ goto retry;
+
+ devl_lock(devlink);
+ list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
+ err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
+ devlink,
+ devlink_sb,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq);
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ }
+ devl_unlock(devlink);
+retry:
+ devlink_put(devlink);
+ }
+out:
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
+ unsigned int sb_index, u16 tc_index,
+ enum devlink_sb_pool_type pool_type,
+ u16 pool_index, u32 threshold,
+ struct netlink_ext_ack *extack)
+
+{
+ const struct devlink_ops *ops = devlink_port->devlink->ops;
+
+ if (ops->sb_tc_pool_bind_set)
+ return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
+ tc_index, pool_type,
+ pool_index, threshold, extack);
+ return -EOPNOTSUPP;
+}
+
+static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = info->user_ptr[0];
+ enum devlink_sb_pool_type pool_type;
+ struct devlink_sb *devlink_sb;
+ u16 tc_index;
+ u16 pool_index;
+ u32 threshold;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ err = devlink_sb_pool_type_get_from_info(info, &pool_type);
+ if (err)
+ return err;
+
+ err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
+ pool_type, &tc_index);
+ if (err)
+ return err;
+
+ err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
+ &pool_index);
+ if (err)
+ return err;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SB_THRESHOLD))
+ return -EINVAL;
+
+ threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
+ return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
+ tc_index, pool_type,
+ pool_index, threshold, info->extack);
+}
+
+static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ const struct devlink_ops *ops = devlink->ops;
+ struct devlink_sb *devlink_sb;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ if (ops->sb_occ_snapshot)
+ return ops->sb_occ_snapshot(devlink, devlink_sb->index);
+ return -EOPNOTSUPP;
+}
+
+static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ const struct devlink_ops *ops = devlink->ops;
+ struct devlink_sb *devlink_sb;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ if (ops->sb_occ_max_clear)
+ return ops->sb_occ_max_clear(devlink, devlink_sb->index);
+ return -EOPNOTSUPP;
+}
+
+static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags)
+{
+ const struct devlink_ops *ops = devlink->ops;
+ enum devlink_eswitch_encap_mode encap_mode;
+ u8 inline_mode;
+ void *hdr;
+ int err = 0;
+ u16 mode;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ err = devlink_nl_put_handle(msg, devlink);
+ if (err)
+ goto nla_put_failure;
+
+ if (ops->eswitch_mode_get) {
+ err = ops->eswitch_mode_get(devlink, &mode);
+ if (err)
+ goto nla_put_failure;
+ err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ if (ops->eswitch_inline_mode_get) {
+ err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
+ if (err)
+ goto nla_put_failure;
+ err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
+ inline_mode);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ if (ops->eswitch_encap_mode_get) {
+ err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
+ if (err)
+ goto nla_put_failure;
+ err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return err;
+}
+
+static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
+ info->snd_portid, info->snd_seq, 0);
+
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_rate_nodes_check(struct devlink *devlink, u16 mode,
+ struct netlink_ext_ack *extack)
+{
+ struct devlink_rate *devlink_rate;
+
+ list_for_each_entry(devlink_rate, &devlink->rate_list, list)
+ if (devlink_rate_is_node(devlink_rate)) {
+ NL_SET_ERR_MSG_MOD(extack, "Rate node(s) exists.");
+ return -EBUSY;
+ }
+ return 0;
+}
+
+static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ const struct devlink_ops *ops = devlink->ops;
+ enum devlink_eswitch_encap_mode encap_mode;
+ u8 inline_mode;
+ int err = 0;
+ u16 mode;
+
+ if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
+ if (!ops->eswitch_mode_set)
+ return -EOPNOTSUPP;
+ mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
+ err = devlink_rate_nodes_check(devlink, mode, info->extack);
+ if (err)
+ return err;
+ err = ops->eswitch_mode_set(devlink, mode, info->extack);
+ if (err)
+ return err;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
+ if (!ops->eswitch_inline_mode_set)
+ return -EOPNOTSUPP;
+ inline_mode = nla_get_u8(
+ info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
+ err = ops->eswitch_inline_mode_set(devlink, inline_mode,
+ info->extack);
+ if (err)
+ return err;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
+ if (!ops->eswitch_encap_mode_set)
+ return -EOPNOTSUPP;
+ encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
+ err = ops->eswitch_encap_mode_set(devlink, encap_mode,
+ info->extack);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+int devlink_dpipe_match_put(struct sk_buff *skb,
+ struct devlink_dpipe_match *match)
+{
+ struct devlink_dpipe_header *header = match->header;
+ struct devlink_dpipe_field *field = &header->fields[match->field_id];
+ struct nlattr *match_attr;
+
+ match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
+ if (!match_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
+ nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, match_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, match_attr);
+ return -EMSGSIZE;
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
+
+static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
+ struct sk_buff *skb)
+{
+ struct nlattr *matches_attr;
+
+ matches_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
+ if (!matches_attr)
+ return -EMSGSIZE;
+
+ if (table->table_ops->matches_dump(table->priv, skb))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, matches_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, matches_attr);
+ return -EMSGSIZE;
+}
+
+int devlink_dpipe_action_put(struct sk_buff *skb,
+ struct devlink_dpipe_action *action)
+{
+ struct devlink_dpipe_header *header = action->header;
+ struct devlink_dpipe_field *field = &header->fields[action->field_id];
+ struct nlattr *action_attr;
+
+ action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
+ if (!action_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
+ nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, action_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, action_attr);
+ return -EMSGSIZE;
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
+
+static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
+ struct sk_buff *skb)
+{
+ struct nlattr *actions_attr;
+
+ actions_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
+ if (!actions_attr)
+ return -EMSGSIZE;
+
+ if (table->table_ops->actions_dump(table->priv, skb))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, actions_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, actions_attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_dpipe_table_put(struct sk_buff *skb,
+ struct devlink_dpipe_table *table)
+{
+ struct nlattr *table_attr;
+ u64 table_size;
+
+ table_size = table->table_ops->size_get(table->priv);
+ table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
+ if (!table_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
+ table->counters_enabled))
+ goto nla_put_failure;
+
+ if (table->resource_valid) {
+ if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
+ table->resource_id, DEVLINK_ATTR_PAD) ||
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
+ table->resource_units, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ }
+ if (devlink_dpipe_matches_put(table, skb))
+ goto nla_put_failure;
+
+ if (devlink_dpipe_actions_put(table, skb))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, table_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, table_attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
+ struct genl_info *info)
+{
+ int err;
+
+ if (*pskb) {
+ err = genlmsg_reply(*pskb, info);
+ if (err)
+ return err;
+ }
+ *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!*pskb)
+ return -ENOMEM;
+ return 0;
+}
+
+static int devlink_dpipe_tables_fill(struct genl_info *info,
+ enum devlink_command cmd, int flags,
+ struct list_head *dpipe_tables,
+ const char *table_name)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_dpipe_table *table;
+ struct nlattr *tables_attr;
+ struct sk_buff *skb = NULL;
+ struct nlmsghdr *nlh;
+ bool incomplete;
+ void *hdr;
+ int i;
+ int err;
+
+ table = list_first_entry(dpipe_tables,
+ struct devlink_dpipe_table, list);
+start_again:
+ err = devlink_dpipe_send_and_alloc_skb(&skb, info);
+ if (err)
+ return err;
+
+ hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
+ &devlink_nl_family, NLM_F_MULTI, cmd);
+ if (!hdr) {
+ nlmsg_free(skb);
+ return -EMSGSIZE;
+ }
+
+ if (devlink_nl_put_handle(skb, devlink))
+ goto nla_put_failure;
+ tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
+ if (!tables_attr)
+ goto nla_put_failure;
+
+ i = 0;
+ incomplete = false;
+ list_for_each_entry_from(table, dpipe_tables, list) {
+ if (!table_name) {
+ err = devlink_dpipe_table_put(skb, table);
+ if (err) {
+ if (!i)
+ goto err_table_put;
+ incomplete = true;
+ break;
+ }
+ } else {
+ if (!strcmp(table->name, table_name)) {
+ err = devlink_dpipe_table_put(skb, table);
+ if (err)
+ break;
+ }
+ }
+ i++;
+ }
+
+ nla_nest_end(skb, tables_attr);
+ genlmsg_end(skb, hdr);
+ if (incomplete)
+ goto start_again;
+
+send_done:
+ nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
+ NLMSG_DONE, 0, flags | NLM_F_MULTI);
+ if (!nlh) {
+ err = devlink_dpipe_send_and_alloc_skb(&skb, info);
+ if (err)
+ return err;
+ goto send_done;
+ }
+
+ return genlmsg_reply(skb, info);
+
+nla_put_failure:
+ err = -EMSGSIZE;
+err_table_put:
+ nlmsg_free(skb);
+ return err;
+}
+
+static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ const char *table_name = NULL;
+
+ if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
+ table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
+
+ return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
+ &devlink->dpipe_table_list,
+ table_name);
+}
+
+static int devlink_dpipe_value_put(struct sk_buff *skb,
+ struct devlink_dpipe_value *value)
+{
+ if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
+ value->value_size, value->value))
+ return -EMSGSIZE;
+ if (value->mask)
+ if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
+ value->value_size, value->mask))
+ return -EMSGSIZE;
+ if (value->mapping_valid)
+ if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
+ value->mapping_value))
+ return -EMSGSIZE;
+ return 0;
+}
+
+static int devlink_dpipe_action_value_put(struct sk_buff *skb,
+ struct devlink_dpipe_value *value)
+{
+ if (!value->action)
+ return -EINVAL;
+ if (devlink_dpipe_action_put(skb, value->action))
+ return -EMSGSIZE;
+ if (devlink_dpipe_value_put(skb, value))
+ return -EMSGSIZE;
+ return 0;
+}
+
+static int devlink_dpipe_action_values_put(struct sk_buff *skb,
+ struct devlink_dpipe_value *values,
+ unsigned int values_count)
+{
+ struct nlattr *action_attr;
+ int i;
+ int err;
+
+ for (i = 0; i < values_count; i++) {
+ action_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_ACTION_VALUE);
+ if (!action_attr)
+ return -EMSGSIZE;
+ err = devlink_dpipe_action_value_put(skb, &values[i]);
+ if (err)
+ goto err_action_value_put;
+ nla_nest_end(skb, action_attr);
+ }
+ return 0;
+
+err_action_value_put:
+ nla_nest_cancel(skb, action_attr);
+ return err;
+}
+
+static int devlink_dpipe_match_value_put(struct sk_buff *skb,
+ struct devlink_dpipe_value *value)
+{
+ if (!value->match)
+ return -EINVAL;
+ if (devlink_dpipe_match_put(skb, value->match))
+ return -EMSGSIZE;
+ if (devlink_dpipe_value_put(skb, value))
+ return -EMSGSIZE;
+ return 0;
+}
+
+static int devlink_dpipe_match_values_put(struct sk_buff *skb,
+ struct devlink_dpipe_value *values,
+ unsigned int values_count)
+{
+ struct nlattr *match_attr;
+ int i;
+ int err;
+
+ for (i = 0; i < values_count; i++) {
+ match_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_MATCH_VALUE);
+ if (!match_attr)
+ return -EMSGSIZE;
+ err = devlink_dpipe_match_value_put(skb, &values[i]);
+ if (err)
+ goto err_match_value_put;
+ nla_nest_end(skb, match_attr);
+ }
+ return 0;
+
+err_match_value_put:
+ nla_nest_cancel(skb, match_attr);
+ return err;
+}
+
+static int devlink_dpipe_entry_put(struct sk_buff *skb,
+ struct devlink_dpipe_entry *entry)
+{
+ struct nlattr *entry_attr, *matches_attr, *actions_attr;
+ int err;
+
+ entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
+ if (!entry_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (entry->counter_valid)
+ if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
+ entry->counter, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ matches_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
+ if (!matches_attr)
+ goto nla_put_failure;
+
+ err = devlink_dpipe_match_values_put(skb, entry->match_values,
+ entry->match_values_count);
+ if (err) {
+ nla_nest_cancel(skb, matches_attr);
+ goto err_match_values_put;
+ }
+ nla_nest_end(skb, matches_attr);
+
+ actions_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
+ if (!actions_attr)
+ goto nla_put_failure;
+
+ err = devlink_dpipe_action_values_put(skb, entry->action_values,
+ entry->action_values_count);
+ if (err) {
+ nla_nest_cancel(skb, actions_attr);
+ goto err_action_values_put;
+ }
+ nla_nest_end(skb, actions_attr);
+
+ nla_nest_end(skb, entry_attr);
+ return 0;
+
+nla_put_failure:
+ err = -EMSGSIZE;
+err_match_values_put:
+err_action_values_put:
+ nla_nest_cancel(skb, entry_attr);
+ return err;
+}
+
+static struct devlink_dpipe_table *
+devlink_dpipe_table_find(struct list_head *dpipe_tables,
+ const char *table_name, struct devlink *devlink)
+{
+ struct devlink_dpipe_table *table;
+ list_for_each_entry_rcu(table, dpipe_tables, list,
+ lockdep_is_held(&devlink->lock)) {
+ if (!strcmp(table->name, table_name))
+ return table;
+ }
+ return NULL;
+}
+
+int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
+{
+ struct devlink *devlink;
+ int err;
+
+ err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
+ dump_ctx->info);
+ if (err)
+ return err;
+
+ dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
+ dump_ctx->info->snd_portid,
+ dump_ctx->info->snd_seq,
+ &devlink_nl_family, NLM_F_MULTI,
+ dump_ctx->cmd);
+ if (!dump_ctx->hdr)
+ goto nla_put_failure;
+
+ devlink = dump_ctx->info->user_ptr[0];
+ if (devlink_nl_put_handle(dump_ctx->skb, devlink))
+ goto nla_put_failure;
+ dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
+ DEVLINK_ATTR_DPIPE_ENTRIES);
+ if (!dump_ctx->nest)
+ goto nla_put_failure;
+ return 0;
+
+nla_put_failure:
+ nlmsg_free(dump_ctx->skb);
+ return -EMSGSIZE;
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
+
+int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
+ struct devlink_dpipe_entry *entry)
+{
+ return devlink_dpipe_entry_put(dump_ctx->skb, entry);
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
+
+int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
+{
+ nla_nest_end(dump_ctx->skb, dump_ctx->nest);
+ genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
+
+void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
+
+{
+ unsigned int value_count, value_index;
+ struct devlink_dpipe_value *value;
+
+ value = entry->action_values;
+ value_count = entry->action_values_count;
+ for (value_index = 0; value_index < value_count; value_index++) {
+ kfree(value[value_index].value);
+ kfree(value[value_index].mask);
+ }
+
+ value = entry->match_values;
+ value_count = entry->match_values_count;
+ for (value_index = 0; value_index < value_count; value_index++) {
+ kfree(value[value_index].value);
+ kfree(value[value_index].mask);
+ }
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_entry_clear);
+
+static int devlink_dpipe_entries_fill(struct genl_info *info,
+ enum devlink_command cmd, int flags,
+ struct devlink_dpipe_table *table)
+{
+ struct devlink_dpipe_dump_ctx dump_ctx;
+ struct nlmsghdr *nlh;
+ int err;
+
+ dump_ctx.skb = NULL;
+ dump_ctx.cmd = cmd;
+ dump_ctx.info = info;
+
+ err = table->table_ops->entries_dump(table->priv,
+ table->counters_enabled,
+ &dump_ctx);
+ if (err)
+ return err;
+
+send_done:
+ nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
+ NLMSG_DONE, 0, flags | NLM_F_MULTI);
+ if (!nlh) {
+ err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
+ if (err)
+ return err;
+ goto send_done;
+ }
+ return genlmsg_reply(dump_ctx.skb, info);
+}
+
+static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_dpipe_table *table;
+ const char *table_name;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_DPIPE_TABLE_NAME))
+ return -EINVAL;
+
+ table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
+ table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
+ table_name, devlink);
+ if (!table)
+ return -EINVAL;
+
+ if (!table->table_ops->entries_dump)
+ return -EINVAL;
+
+ return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
+ 0, table);
+}
+
+static int devlink_dpipe_fields_put(struct sk_buff *skb,
+ const struct devlink_dpipe_header *header)
+{
+ struct devlink_dpipe_field *field;
+ struct nlattr *field_attr;
+ int i;
+
+ for (i = 0; i < header->fields_count; i++) {
+ field = &header->fields[i];
+ field_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_FIELD);
+ if (!field_attr)
+ return -EMSGSIZE;
+ if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
+ goto nla_put_failure;
+ nla_nest_end(skb, field_attr);
+ }
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, field_attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_dpipe_header_put(struct sk_buff *skb,
+ struct devlink_dpipe_header *header)
+{
+ struct nlattr *fields_attr, *header_attr;
+ int err;
+
+ header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
+ if (!header_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
+ nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
+ goto nla_put_failure;
+
+ fields_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
+ if (!fields_attr)
+ goto nla_put_failure;
+
+ err = devlink_dpipe_fields_put(skb, header);
+ if (err) {
+ nla_nest_cancel(skb, fields_attr);
+ goto nla_put_failure;
+ }
+ nla_nest_end(skb, fields_attr);
+ nla_nest_end(skb, header_attr);
+ return 0;
+
+nla_put_failure:
+ err = -EMSGSIZE;
+ nla_nest_cancel(skb, header_attr);
+ return err;
+}
+
+static int devlink_dpipe_headers_fill(struct genl_info *info,
+ enum devlink_command cmd, int flags,
+ struct devlink_dpipe_headers *
+ dpipe_headers)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct nlattr *headers_attr;
+ struct sk_buff *skb = NULL;
+ struct nlmsghdr *nlh;
+ void *hdr;
+ int i, j;
+ int err;
+
+ i = 0;
+start_again:
+ err = devlink_dpipe_send_and_alloc_skb(&skb, info);
+ if (err)
+ return err;
+
+ hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
+ &devlink_nl_family, NLM_F_MULTI, cmd);
+ if (!hdr) {
+ nlmsg_free(skb);
+ return -EMSGSIZE;
+ }
+
+ if (devlink_nl_put_handle(skb, devlink))
+ goto nla_put_failure;
+ headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
+ if (!headers_attr)
+ goto nla_put_failure;
+
+ j = 0;
+ for (; i < dpipe_headers->headers_count; i++) {
+ err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
+ if (err) {
+ if (!j)
+ goto err_table_put;
+ break;
+ }
+ j++;
+ }
+ nla_nest_end(skb, headers_attr);
+ genlmsg_end(skb, hdr);
+ if (i != dpipe_headers->headers_count)
+ goto start_again;
+
+send_done:
+ nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
+ NLMSG_DONE, 0, flags | NLM_F_MULTI);
+ if (!nlh) {
+ err = devlink_dpipe_send_and_alloc_skb(&skb, info);
+ if (err)
+ return err;
+ goto send_done;
+ }
+ return genlmsg_reply(skb, info);
+
+nla_put_failure:
+ err = -EMSGSIZE;
+err_table_put:
+ nlmsg_free(skb);
+ return err;
+}
+
+static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+
+ if (!devlink->dpipe_headers)
+ return -EOPNOTSUPP;
+ return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
+ 0, devlink->dpipe_headers);
+}
+
+static int devlink_dpipe_table_counters_set(struct devlink *devlink,
+ const char *table_name,
+ bool enable)
+{
+ struct devlink_dpipe_table *table;
+
+ table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
+ table_name, devlink);
+ if (!table)
+ return -EINVAL;
+
+ if (table->counter_control_extern)
+ return -EOPNOTSUPP;
+
+ if (!(table->counters_enabled ^ enable))
+ return 0;
+
+ table->counters_enabled = enable;
+ if (table->table_ops->counters_set_update)
+ table->table_ops->counters_set_update(table->priv, enable);
+ return 0;
+}
+
+static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ const char *table_name;
+ bool counters_enable;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_DPIPE_TABLE_NAME) ||
+ GENL_REQ_ATTR_CHECK(info,
+ DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED))
+ return -EINVAL;
+
+ table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
+ counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
+
+ return devlink_dpipe_table_counters_set(devlink, table_name,
+ counters_enable);
+}
+
+static struct devlink_resource *
+devlink_resource_find(struct devlink *devlink,
+ struct devlink_resource *resource, u64 resource_id)
+{
+ struct list_head *resource_list;
+
+ if (resource)
+ resource_list = &resource->resource_list;
+ else
+ resource_list = &devlink->resource_list;
+
+ list_for_each_entry(resource, resource_list, list) {
+ struct devlink_resource *child_resource;
+
+ if (resource->id == resource_id)
+ return resource;
+
+ child_resource = devlink_resource_find(devlink, resource,
+ resource_id);
+ if (child_resource)
+ return child_resource;
+ }
+ return NULL;
+}
+
+static void
+devlink_resource_validate_children(struct devlink_resource *resource)
+{
+ struct devlink_resource *child_resource;
+ bool size_valid = true;
+ u64 parts_size = 0;
+
+ if (list_empty(&resource->resource_list))
+ goto out;
+
+ list_for_each_entry(child_resource, &resource->resource_list, list)
+ parts_size += child_resource->size_new;
+
+ if (parts_size > resource->size_new)
+ size_valid = false;
+out:
+ resource->size_valid = size_valid;
+}
+
+static int
+devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
+ struct netlink_ext_ack *extack)
+{
+ u64 reminder;
+ int err = 0;
+
+ if (size > resource->size_params.size_max) {
+ NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
+ err = -EINVAL;
+ }
+
+ if (size < resource->size_params.size_min) {
+ NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
+ err = -EINVAL;
+ }
+
+ div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
+ if (reminder) {
+ NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_resource *resource;
+ u64 resource_id;
+ u64 size;
+ int err;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_RESOURCE_ID) ||
+ GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_RESOURCE_SIZE))
+ return -EINVAL;
+ resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
+
+ resource = devlink_resource_find(devlink, NULL, resource_id);
+ if (!resource)
+ return -EINVAL;
+
+ size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
+ err = devlink_resource_validate_size(resource, size, info->extack);
+ if (err)
+ return err;
+
+ resource->size_new = size;
+ devlink_resource_validate_children(resource);
+ if (resource->parent)
+ devlink_resource_validate_children(resource->parent);
+ return 0;
+}
+
+static int
+devlink_resource_size_params_put(struct devlink_resource *resource,
+ struct sk_buff *skb)
+{
+ struct devlink_resource_size_params *size_params;
+
+ size_params = &resource->size_params;
+ if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
+ size_params->size_granularity, DEVLINK_ATTR_PAD) ||
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
+ size_params->size_max, DEVLINK_ATTR_PAD) ||
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
+ size_params->size_min, DEVLINK_ATTR_PAD) ||
+ nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
+ return -EMSGSIZE;
+ return 0;
+}
+
+static int devlink_resource_occ_put(struct devlink_resource *resource,
+ struct sk_buff *skb)
+{
+ if (!resource->occ_get)
+ return 0;
+ return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
+ resource->occ_get(resource->occ_get_priv),
+ DEVLINK_ATTR_PAD);
+}
+
+static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
+ struct devlink_resource *resource)
+{
+ struct devlink_resource *child_resource;
+ struct nlattr *child_resource_attr;
+ struct nlattr *resource_attr;
+
+ resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
+ if (!resource_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
+ DEVLINK_ATTR_PAD) ||
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (resource->size != resource->size_new &&
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
+ resource->size_new, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (devlink_resource_occ_put(resource, skb))
+ goto nla_put_failure;
+ if (devlink_resource_size_params_put(resource, skb))
+ goto nla_put_failure;
+ if (list_empty(&resource->resource_list))
+ goto out;
+
+ if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
+ resource->size_valid))
+ goto nla_put_failure;
+
+ child_resource_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_RESOURCE_LIST);
+ if (!child_resource_attr)
+ goto nla_put_failure;
+
+ list_for_each_entry(child_resource, &resource->resource_list, list) {
+ if (devlink_resource_put(devlink, skb, child_resource))
+ goto resource_put_failure;
+ }
+
+ nla_nest_end(skb, child_resource_attr);
+out:
+ nla_nest_end(skb, resource_attr);
+ return 0;
+
+resource_put_failure:
+ nla_nest_cancel(skb, child_resource_attr);
+nla_put_failure:
+ nla_nest_cancel(skb, resource_attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_resource_fill(struct genl_info *info,
+ enum devlink_command cmd, int flags)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_resource *resource;
+ struct nlattr *resources_attr;
+ struct sk_buff *skb = NULL;
+ struct nlmsghdr *nlh;
+ bool incomplete;
+ void *hdr;
+ int i;
+ int err;
+
+ resource = list_first_entry(&devlink->resource_list,
+ struct devlink_resource, list);
+start_again:
+ err = devlink_dpipe_send_and_alloc_skb(&skb, info);
+ if (err)
+ return err;
+
+ hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
+ &devlink_nl_family, NLM_F_MULTI, cmd);
+ if (!hdr) {
+ nlmsg_free(skb);
+ return -EMSGSIZE;
+ }
+
+ if (devlink_nl_put_handle(skb, devlink))
+ goto nla_put_failure;
+
+ resources_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_RESOURCE_LIST);
+ if (!resources_attr)
+ goto nla_put_failure;
+
+ incomplete = false;
+ i = 0;
+ list_for_each_entry_from(resource, &devlink->resource_list, list) {
+ err = devlink_resource_put(devlink, skb, resource);
+ if (err) {
+ if (!i)
+ goto err_resource_put;
+ incomplete = true;
+ break;
+ }
+ i++;
+ }
+ nla_nest_end(skb, resources_attr);
+ genlmsg_end(skb, hdr);
+ if (incomplete)
+ goto start_again;
+send_done:
+ nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
+ NLMSG_DONE, 0, flags | NLM_F_MULTI);
+ if (!nlh) {
+ err = devlink_dpipe_send_and_alloc_skb(&skb, info);
+ if (err)
+ return err;
+ goto send_done;
+ }
+ return genlmsg_reply(skb, info);
+
+nla_put_failure:
+ err = -EMSGSIZE;
+err_resource_put:
+ nlmsg_free(skb);
+ return err;
+}
+
+static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+
+ if (list_empty(&devlink->resource_list))
+ return -EOPNOTSUPP;
+
+ return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
+}
+
+static int
+devlink_resources_validate(struct devlink *devlink,
+ struct devlink_resource *resource,
+ struct genl_info *info)
+{
+ struct list_head *resource_list;
+ int err = 0;
+
+ if (resource)
+ resource_list = &resource->resource_list;
+ else
+ resource_list = &devlink->resource_list;
+
+ list_for_each_entry(resource, resource_list, list) {
+ if (!resource->size_valid)
+ return -EINVAL;
+ err = devlink_resources_validate(devlink, resource, info);
+ if (err)
+ return err;
+ }
+ return err;
+}
+
+static struct net *devlink_netns_get(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
+ struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
+ struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
+ struct net *net;
+
+ if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
+ NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (netns_pid_attr) {
+ net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
+ } else if (netns_fd_attr) {
+ net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
+ } else if (netns_id_attr) {
+ net = get_net_ns_by_id(sock_net(skb->sk),
+ nla_get_u32(netns_id_attr));
+ if (!net)
+ net = ERR_PTR(-EINVAL);
+ } else {
+ WARN_ON(1);
+ net = ERR_PTR(-EINVAL);
+ }
+ if (IS_ERR(net)) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
+ return ERR_PTR(-EINVAL);
+ }
+ if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
+ put_net(net);
+ return ERR_PTR(-EPERM);
+ }
+ return net;
+}
+
+static void devlink_param_notify(struct devlink *devlink,
+ unsigned int port_index,
+ struct devlink_param_item *param_item,
+ enum devlink_command cmd);
+
+static void devlink_ns_change_notify(struct devlink *devlink,
+ struct net *dest_net, struct net *curr_net,
+ bool new)
+{
+ struct devlink_param_item *param_item;
+ enum devlink_command cmd;
+
+ /* Userspace needs to be notified about devlink objects
+ * removed from original and entering new network namespace.
+ * The rest of the devlink objects are re-created during
+ * reload process so the notifications are generated separatelly.
+ */
+
+ if (!dest_net || net_eq(dest_net, curr_net))
+ return;
+
+ if (new)
+ devlink_notify(devlink, DEVLINK_CMD_NEW);
+
+ cmd = new ? DEVLINK_CMD_PARAM_NEW : DEVLINK_CMD_PARAM_DEL;
+ list_for_each_entry(param_item, &devlink->param_list, list)
+ devlink_param_notify(devlink, 0, param_item, cmd);
+
+ if (!new)
+ devlink_notify(devlink, DEVLINK_CMD_DEL);
+}
+
+static bool devlink_reload_supported(const struct devlink_ops *ops)
+{
+ return ops->reload_down && ops->reload_up;
+}
+
+static void devlink_reload_failed_set(struct devlink *devlink,
+ bool reload_failed)
+{
+ if (devlink->reload_failed == reload_failed)
+ return;
+ devlink->reload_failed = reload_failed;
+ devlink_notify(devlink, DEVLINK_CMD_NEW);
+}
+
+bool devlink_is_reload_failed(const struct devlink *devlink)
+{
+ return devlink->reload_failed;
+}
+EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
+
+static void
+__devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
+ enum devlink_reload_limit limit, u32 actions_performed)
+{
+ unsigned long actions = actions_performed;
+ int stat_idx;
+ int action;
+
+ for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
+ stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
+ reload_stats[stat_idx]++;
+ }
+ devlink_notify(devlink, DEVLINK_CMD_NEW);
+}
+
+static void
+devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
+ u32 actions_performed)
+{
+ __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
+ actions_performed);
+}
+
+/**
+ * devlink_remote_reload_actions_performed - Update devlink on reload actions
+ * performed which are not a direct result of devlink reload call.
+ *
+ * This should be called by a driver after performing reload actions in case it was not
+ * a result of devlink reload call. For example fw_activate was performed as a result
+ * of devlink reload triggered fw_activate on another host.
+ * The motivation for this function is to keep data on reload actions performed on this
+ * function whether it was done due to direct devlink reload call or not.
+ *
+ * @devlink: devlink
+ * @limit: reload limit
+ * @actions_performed: bitmask of actions performed
+ */
+void devlink_remote_reload_actions_performed(struct devlink *devlink,
+ enum devlink_reload_limit limit,
+ u32 actions_performed)
+{
+ if (WARN_ON(!actions_performed ||
+ actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
+ actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
+ limit > DEVLINK_RELOAD_LIMIT_MAX))
+ return;
+
+ __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
+ actions_performed);
+}
+EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
+
+static int devlink_reload(struct devlink *devlink, struct net *dest_net,
+ enum devlink_reload_action action, enum devlink_reload_limit limit,
+ u32 *actions_performed, struct netlink_ext_ack *extack)
+{
+ u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
+ struct net *curr_net;
+ int err;
+
+ memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
+ sizeof(remote_reload_stats));
+
+ curr_net = devlink_net(devlink);
+ devlink_ns_change_notify(devlink, dest_net, curr_net, false);
+ err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
+ if (err)
+ return err;
+
+ if (dest_net && !net_eq(dest_net, curr_net)) {
+ move_netdevice_notifier_net(curr_net, dest_net,
+ &devlink->netdevice_nb);
+ write_pnet(&devlink->_net, dest_net);
+ }
+
+ err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
+ devlink_reload_failed_set(devlink, !!err);
+ if (err)
+ return err;
+
+ devlink_ns_change_notify(devlink, dest_net, curr_net, true);
+ WARN_ON(!(*actions_performed & BIT(action)));
+ /* Catch driver on updating the remote action within devlink reload */
+ WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
+ sizeof(remote_reload_stats)));
+ devlink_reload_stats_update(devlink, limit, *actions_performed);
+ return 0;
+}
+
+static int
+devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
+ enum devlink_command cmd, struct genl_info *info)
+{
+ struct sk_buff *msg;
+ void *hdr;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
+ if (!hdr)
+ goto free_msg;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
+ actions_performed))
+ goto nla_put_failure;
+ genlmsg_end(msg, hdr);
+
+ return genlmsg_reply(msg, info);
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+free_msg:
+ nlmsg_free(msg);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ enum devlink_reload_action action;
+ enum devlink_reload_limit limit;
+ struct net *dest_net = NULL;
+ u32 actions_performed;
+ int err;
+
+ if (!(devlink->features & DEVLINK_F_RELOAD))
+ return -EOPNOTSUPP;
+
+ err = devlink_resources_validate(devlink, NULL, info);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
+ return err;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
+ action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
+ else
+ action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
+
+ if (!devlink_reload_action_is_supported(devlink, action)) {
+ NL_SET_ERR_MSG_MOD(info->extack,
+ "Requested reload action is not supported by the driver");
+ return -EOPNOTSUPP;
+ }
+
+ limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
+ if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
+ struct nla_bitfield32 limits;
+ u32 limits_selected;
+
+ limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
+ limits_selected = limits.value & limits.selector;
+ if (!limits_selected) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
+ return -EINVAL;
+ }
+ for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
+ if (limits_selected & BIT(limit))
+ break;
+ /* UAPI enables multiselection, but currently it is not used */
+ if (limits_selected != BIT(limit)) {
+ NL_SET_ERR_MSG_MOD(info->extack,
+ "Multiselection of limit is not supported");
+ return -EOPNOTSUPP;
+ }
+ if (!devlink_reload_limit_is_supported(devlink, limit)) {
+ NL_SET_ERR_MSG_MOD(info->extack,
+ "Requested limit is not supported by the driver");
+ return -EOPNOTSUPP;
+ }
+ if (devlink_reload_combination_is_invalid(action, limit)) {
+ NL_SET_ERR_MSG_MOD(info->extack,
+ "Requested limit is invalid for this action");
+ return -EINVAL;
+ }
+ }
+ if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
+ info->attrs[DEVLINK_ATTR_NETNS_FD] ||
+ info->attrs[DEVLINK_ATTR_NETNS_ID]) {
+ dest_net = devlink_netns_get(skb, info);
+ if (IS_ERR(dest_net))
+ return PTR_ERR(dest_net);
+ }
+
+ err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
+
+ if (dest_net)
+ put_net(dest_net);
+
+ if (err)
+ return err;
+ /* For backward compatibility generate reply only if attributes used by user */
+ if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
+ return 0;
+
+ return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
+ DEVLINK_CMD_RELOAD, info);
+}
+
+static int devlink_nl_flash_update_fill(struct sk_buff *msg,
+ struct devlink *devlink,
+ enum devlink_command cmd,
+ struct devlink_flash_notify *params)
+{
+ void *hdr;
+
+ hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
+ goto out;
+
+ if (params->status_msg &&
+ nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
+ params->status_msg))
+ goto nla_put_failure;
+ if (params->component &&
+ nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
+ params->component))
+ goto nla_put_failure;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
+ params->done, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
+ params->total, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
+ params->timeout, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+out:
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void __devlink_flash_update_notify(struct devlink *devlink,
+ enum devlink_command cmd,
+ struct devlink_flash_notify *params)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
+ cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
+ cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
+
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
+ if (err)
+ goto out_free_msg;
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+ return;
+
+out_free_msg:
+ nlmsg_free(msg);
+}
+
+static void devlink_flash_update_begin_notify(struct devlink *devlink)
+{
+ struct devlink_flash_notify params = {};
+
+ __devlink_flash_update_notify(devlink,
+ DEVLINK_CMD_FLASH_UPDATE,
+ ¶ms);
+}
+
+static void devlink_flash_update_end_notify(struct devlink *devlink)
+{
+ struct devlink_flash_notify params = {};
+
+ __devlink_flash_update_notify(devlink,
+ DEVLINK_CMD_FLASH_UPDATE_END,
+ ¶ms);
+}
+
+void devlink_flash_update_status_notify(struct devlink *devlink,
+ const char *status_msg,
+ const char *component,
+ unsigned long done,
+ unsigned long total)
+{
+ struct devlink_flash_notify params = {
+ .status_msg = status_msg,
+ .component = component,
+ .done = done,
+ .total = total,
+ };
+
+ __devlink_flash_update_notify(devlink,
+ DEVLINK_CMD_FLASH_UPDATE_STATUS,
+ ¶ms);
+}
+EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
+
+void devlink_flash_update_timeout_notify(struct devlink *devlink,
+ const char *status_msg,
+ const char *component,
+ unsigned long timeout)
+{
+ struct devlink_flash_notify params = {
+ .status_msg = status_msg,
+ .component = component,
+ .timeout = timeout,
+ };
+
+ __devlink_flash_update_notify(devlink,
+ DEVLINK_CMD_FLASH_UPDATE_STATUS,
+ ¶ms);
+}
+EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
+
+struct devlink_info_req {
+ struct sk_buff *msg;
+ void (*version_cb)(const char *version_name,
+ enum devlink_info_version_type version_type,
+ void *version_cb_priv);
+ void *version_cb_priv;
+};
+
+struct devlink_flash_component_lookup_ctx {
+ const char *lookup_name;
+ bool lookup_name_found;
+};
+
+static void
+devlink_flash_component_lookup_cb(const char *version_name,
+ enum devlink_info_version_type version_type,
+ void *version_cb_priv)
+{
+ struct devlink_flash_component_lookup_ctx *lookup_ctx = version_cb_priv;
+
+ if (version_type != DEVLINK_INFO_VERSION_TYPE_COMPONENT ||
+ lookup_ctx->lookup_name_found)
+ return;
+
+ lookup_ctx->lookup_name_found =
+ !strcmp(lookup_ctx->lookup_name, version_name);
+}
+
+static int devlink_flash_component_get(struct devlink *devlink,
+ struct nlattr *nla_component,
+ const char **p_component,
+ struct netlink_ext_ack *extack)
+{
+ struct devlink_flash_component_lookup_ctx lookup_ctx = {};
+ struct devlink_info_req req = {};
+ const char *component;
+ int ret;
+
+ if (!nla_component)
+ return 0;
+
+ component = nla_data(nla_component);
+
+ if (!devlink->ops->info_get) {
+ NL_SET_ERR_MSG_ATTR(extack, nla_component,
+ "component update is not supported by this device");
+ return -EOPNOTSUPP;
+ }
+
+ lookup_ctx.lookup_name = component;
+ req.version_cb = devlink_flash_component_lookup_cb;
+ req.version_cb_priv = &lookup_ctx;
+
+ ret = devlink->ops->info_get(devlink, &req, NULL);
+ if (ret)
+ return ret;
+
+ if (!lookup_ctx.lookup_name_found) {
+ NL_SET_ERR_MSG_ATTR(extack, nla_component,
+ "selected component is not supported by this device");
+ return -EINVAL;
+ }
+ *p_component = component;
+ return 0;
+}
+
+static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct nlattr *nla_overwrite_mask, *nla_file_name;
+ struct devlink_flash_update_params params = {};
+ struct devlink *devlink = info->user_ptr[0];
+ const char *file_name;
+ u32 supported_params;
+ int ret;
+
+ if (!devlink->ops->flash_update)
+ return -EOPNOTSUPP;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME))
+ return -EINVAL;
+
+ ret = devlink_flash_component_get(devlink,
+ info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT],
+ ¶ms.component, info->extack);
+ if (ret)
+ return ret;
+
+ supported_params = devlink->ops->supported_flash_update_params;
+
+ nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
+ if (nla_overwrite_mask) {
+ struct nla_bitfield32 sections;
+
+ if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
+ NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
+ "overwrite settings are not supported by this device");
+ return -EOPNOTSUPP;
+ }
+ sections = nla_get_bitfield32(nla_overwrite_mask);
+ params.overwrite_mask = sections.value & sections.selector;
+ }
+
+ nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
+ file_name = nla_data(nla_file_name);
+ ret = request_firmware(¶ms.fw, file_name, devlink->dev);
+ if (ret) {
+ NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name, "failed to locate the requested firmware file");
+ return ret;
+ }
+
+ devlink_flash_update_begin_notify(devlink);
+ ret = devlink->ops->flash_update(devlink, ¶ms, info->extack);
+ devlink_flash_update_end_notify(devlink);
+
+ release_firmware(params.fw);
+
+ return ret;
+}
+
+static int
+devlink_nl_selftests_fill(struct sk_buff *msg, struct devlink *devlink,
+ u32 portid, u32 seq, int flags,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *selftests;
+ void *hdr;
+ int err;
+ int i;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags,
+ DEVLINK_CMD_SELFTESTS_GET);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ err = -EMSGSIZE;
+ if (devlink_nl_put_handle(msg, devlink))
+ goto err_cancel_msg;
+
+ selftests = nla_nest_start(msg, DEVLINK_ATTR_SELFTESTS);
+ if (!selftests)
+ goto err_cancel_msg;
+
+ for (i = DEVLINK_ATTR_SELFTEST_ID_UNSPEC + 1;
+ i <= DEVLINK_ATTR_SELFTEST_ID_MAX; i++) {
+ if (devlink->ops->selftest_check(devlink, i, extack)) {
+ err = nla_put_flag(msg, i);
+ if (err)
+ goto err_cancel_msg;
+ }
+ }
+
+ nla_nest_end(msg, selftests);
+ genlmsg_end(msg, hdr);
+ return 0;
+
+err_cancel_msg:
+ genlmsg_cancel(msg, hdr);
+ return err;
+}
+
+static int devlink_nl_cmd_selftests_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct sk_buff *msg;
+ int err;
+
+ if (!devlink->ops->selftest_check)
+ return -EOPNOTSUPP;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_selftests_fill(msg, devlink, info->snd_portid,
+ info->snd_seq, 0, info->extack);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_selftests_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ if (idx < start || !devlink->ops->selftest_check)
+ goto inc;
+
+ devl_lock(devlink);
+ err = devlink_nl_selftests_fill(msg, devlink,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI,
+ cb->extack);
+ devl_unlock(devlink);
+ if (err) {
+ devlink_put(devlink);
+ break;
+ }
+inc:
+ idx++;
+ devlink_put(devlink);
+ }
+
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_selftest_result_put(struct sk_buff *skb, unsigned int id,
+ enum devlink_selftest_status test_status)
+{
+ struct nlattr *result_attr;
+
+ result_attr = nla_nest_start(skb, DEVLINK_ATTR_SELFTEST_RESULT);
+ if (!result_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u32(skb, DEVLINK_ATTR_SELFTEST_RESULT_ID, id) ||
+ nla_put_u8(skb, DEVLINK_ATTR_SELFTEST_RESULT_STATUS,
+ test_status))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, result_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, result_attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_selftests_run(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct nlattr *tb[DEVLINK_ATTR_SELFTEST_ID_MAX + 1];
+ struct devlink *devlink = info->user_ptr[0];
+ struct nlattr *attrs, *selftests;
+ struct sk_buff *msg;
+ void *hdr;
+ int err;
+ int i;
+
+ if (!devlink->ops->selftest_run || !devlink->ops->selftest_check)
+ return -EOPNOTSUPP;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SELFTESTS))
+ return -EINVAL;
+
+ attrs = info->attrs[DEVLINK_ATTR_SELFTESTS];
+
+ err = nla_parse_nested(tb, DEVLINK_ATTR_SELFTEST_ID_MAX, attrs,
+ devlink_selftest_nl_policy, info->extack);
+ if (err < 0)
+ return err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = -EMSGSIZE;
+ hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
+ &devlink_nl_family, 0, DEVLINK_CMD_SELFTESTS_RUN);
+ if (!hdr)
+ goto free_msg;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto genlmsg_cancel;
+
+ selftests = nla_nest_start(msg, DEVLINK_ATTR_SELFTESTS);
+ if (!selftests)
+ goto genlmsg_cancel;
+
+ for (i = DEVLINK_ATTR_SELFTEST_ID_UNSPEC + 1;
+ i <= DEVLINK_ATTR_SELFTEST_ID_MAX; i++) {
+ enum devlink_selftest_status test_status;
+
+ if (nla_get_flag(tb[i])) {
+ if (!devlink->ops->selftest_check(devlink, i,
+ info->extack)) {
+ if (devlink_selftest_result_put(msg, i,
+ DEVLINK_SELFTEST_STATUS_SKIP))
+ goto selftests_nest_cancel;
+ continue;
+ }
+
+ test_status = devlink->ops->selftest_run(devlink, i,
+ info->extack);
+ if (devlink_selftest_result_put(msg, i, test_status))
+ goto selftests_nest_cancel;
+ }
+ }
+
+ nla_nest_end(msg, selftests);
+ genlmsg_end(msg, hdr);
+ return genlmsg_reply(msg, info);
+
+selftests_nest_cancel:
+ nla_nest_cancel(msg, selftests);
+genlmsg_cancel:
+ genlmsg_cancel(msg, hdr);
+free_msg:
+ nlmsg_free(msg);
+ return err;
+}
+
+static const struct devlink_param devlink_param_generic[] = {
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
+ .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
+ .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
+ .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
+ .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
+ .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
+ .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
+ .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
+ .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
+ .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
+ .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
+ .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
+ .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
+ .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
+ .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
+ .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
+ .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ETH,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_ETH_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_ETH_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_VNET_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_VNET_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
+ .name = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME,
+ .type = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE,
+ .name = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME,
+ .type = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE,
+ },
+};
+
+static int devlink_param_generic_verify(const struct devlink_param *param)
+{
+ /* verify it match generic parameter by id and name */
+ if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
+ return -EINVAL;
+ if (strcmp(param->name, devlink_param_generic[param->id].name))
+ return -ENOENT;
+
+ WARN_ON(param->type != devlink_param_generic[param->id].type);
+
+ return 0;
+}
+
+static int devlink_param_driver_verify(const struct devlink_param *param)
+{
+ int i;
+
+ if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
+ return -EINVAL;
+ /* verify no such name in generic params */
+ for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
+ if (!strcmp(param->name, devlink_param_generic[i].name))
+ return -EEXIST;
+
+ return 0;
+}
+
+static struct devlink_param_item *
+devlink_param_find_by_name(struct list_head *param_list,
+ const char *param_name)
+{
+ struct devlink_param_item *param_item;
+
+ list_for_each_entry(param_item, param_list, list)
+ if (!strcmp(param_item->param->name, param_name))
+ return param_item;
+ return NULL;
+}
+
+static struct devlink_param_item *
+devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
+{
+ struct devlink_param_item *param_item;
+
+ list_for_each_entry(param_item, param_list, list)
+ if (param_item->param->id == param_id)
+ return param_item;
+ return NULL;
+}
+
+static bool
+devlink_param_cmode_is_supported(const struct devlink_param *param,
+ enum devlink_param_cmode cmode)
+{
+ return test_bit(cmode, ¶m->supported_cmodes);
+}
+
+static int devlink_param_get(struct devlink *devlink,
+ const struct devlink_param *param,
+ struct devlink_param_gset_ctx *ctx)
+{
+ if (!param->get || devlink->reload_failed)
+ return -EOPNOTSUPP;
+ return param->get(devlink, param->id, ctx);
+}
+
+static int devlink_param_set(struct devlink *devlink,
+ const struct devlink_param *param,
+ struct devlink_param_gset_ctx *ctx)
+{
+ if (!param->set || devlink->reload_failed)
+ return -EOPNOTSUPP;
+ return param->set(devlink, param->id, ctx);
+}
+
+static int
+devlink_param_type_to_nla_type(enum devlink_param_type param_type)
+{
+ switch (param_type) {
+ case DEVLINK_PARAM_TYPE_U8:
+ return NLA_U8;
+ case DEVLINK_PARAM_TYPE_U16:
+ return NLA_U16;
+ case DEVLINK_PARAM_TYPE_U32:
+ return NLA_U32;
+ case DEVLINK_PARAM_TYPE_STRING:
+ return NLA_STRING;
+ case DEVLINK_PARAM_TYPE_BOOL:
+ return NLA_FLAG;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int
+devlink_nl_param_value_fill_one(struct sk_buff *msg,
+ enum devlink_param_type type,
+ enum devlink_param_cmode cmode,
+ union devlink_param_value val)
+{
+ struct nlattr *param_value_attr;
+
+ param_value_attr = nla_nest_start_noflag(msg,
+ DEVLINK_ATTR_PARAM_VALUE);
+ if (!param_value_attr)
+ goto nla_put_failure;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
+ goto value_nest_cancel;
+
+ switch (type) {
+ case DEVLINK_PARAM_TYPE_U8:
+ if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
+ goto value_nest_cancel;
+ break;
+ case DEVLINK_PARAM_TYPE_U16:
+ if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
+ goto value_nest_cancel;
+ break;
+ case DEVLINK_PARAM_TYPE_U32:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
+ goto value_nest_cancel;
+ break;
+ case DEVLINK_PARAM_TYPE_STRING:
+ if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
+ val.vstr))
+ goto value_nest_cancel;
+ break;
+ case DEVLINK_PARAM_TYPE_BOOL:
+ if (val.vbool &&
+ nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
+ goto value_nest_cancel;
+ break;
+ }
+
+ nla_nest_end(msg, param_value_attr);
+ return 0;
+
+value_nest_cancel:
+ nla_nest_cancel(msg, param_value_attr);
+nla_put_failure:
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
+ unsigned int port_index,
+ struct devlink_param_item *param_item,
+ enum devlink_command cmd,
+ u32 portid, u32 seq, int flags)
+{
+ union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
+ bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
+ const struct devlink_param *param = param_item->param;
+ struct devlink_param_gset_ctx ctx;
+ struct nlattr *param_values_list;
+ struct nlattr *param_attr;
+ int nla_type;
+ void *hdr;
+ int err;
+ int i;
+
+ /* Get value from driver part to driverinit configuration mode */
+ for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
+ if (!devlink_param_cmode_is_supported(param, i))
+ continue;
+ if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
+ if (!param_item->driverinit_value_valid)
+ return -EOPNOTSUPP;
+ param_value[i] = param_item->driverinit_value;
+ } else {
+ ctx.cmode = i;
+ err = devlink_param_get(devlink, param, &ctx);
+ if (err)
+ return err;
+ param_value[i] = ctx.val;
+ }
+ param_value_set[i] = true;
+ }
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto genlmsg_cancel;
+
+ if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
+ cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
+ cmd == DEVLINK_CMD_PORT_PARAM_DEL)
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
+ goto genlmsg_cancel;
+
+ param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
+ if (!param_attr)
+ goto genlmsg_cancel;
+ if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
+ goto param_nest_cancel;
+ if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
+ goto param_nest_cancel;
+
+ nla_type = devlink_param_type_to_nla_type(param->type);
+ if (nla_type < 0)
+ goto param_nest_cancel;
+ if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
+ goto param_nest_cancel;
+
+ param_values_list = nla_nest_start_noflag(msg,
+ DEVLINK_ATTR_PARAM_VALUES_LIST);
+ if (!param_values_list)
+ goto param_nest_cancel;
+
+ for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
+ if (!param_value_set[i])
+ continue;
+ err = devlink_nl_param_value_fill_one(msg, param->type,
+ i, param_value[i]);
+ if (err)
+ goto values_list_nest_cancel;
+ }
+
+ nla_nest_end(msg, param_values_list);
+ nla_nest_end(msg, param_attr);
+ genlmsg_end(msg, hdr);
+ return 0;
+
+values_list_nest_cancel:
+ nla_nest_end(msg, param_values_list);
+param_nest_cancel:
+ nla_nest_cancel(msg, param_attr);
+genlmsg_cancel:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_param_notify(struct devlink *devlink,
+ unsigned int port_index,
+ struct devlink_param_item *param_item,
+ enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
+ cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
+ cmd != DEVLINK_CMD_PORT_PARAM_DEL);
+ ASSERT_DEVLINK_REGISTERED(devlink);
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+ err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
+ 0, 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_param_item *param_item;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(param_item, &devlink->param_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_param_fill(msg, devlink, 0, param_item,
+ DEVLINK_CMD_PARAM_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int
+devlink_param_type_get_from_info(struct genl_info *info,
+ enum devlink_param_type *param_type)
+{
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PARAM_TYPE))
+ return -EINVAL;
+
+ switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
+ case NLA_U8:
+ *param_type = DEVLINK_PARAM_TYPE_U8;
+ break;
+ case NLA_U16:
+ *param_type = DEVLINK_PARAM_TYPE_U16;
+ break;
+ case NLA_U32:
+ *param_type = DEVLINK_PARAM_TYPE_U32;
+ break;
+ case NLA_STRING:
+ *param_type = DEVLINK_PARAM_TYPE_STRING;
+ break;
+ case NLA_FLAG:
+ *param_type = DEVLINK_PARAM_TYPE_BOOL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+devlink_param_value_get_from_info(const struct devlink_param *param,
+ struct genl_info *info,
+ union devlink_param_value *value)
+{
+ struct nlattr *param_data;
+ int len;
+
+ param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
+
+ if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
+ return -EINVAL;
+
+ switch (param->type) {
+ case DEVLINK_PARAM_TYPE_U8:
+ if (nla_len(param_data) != sizeof(u8))
+ return -EINVAL;
+ value->vu8 = nla_get_u8(param_data);
+ break;
+ case DEVLINK_PARAM_TYPE_U16:
+ if (nla_len(param_data) != sizeof(u16))
+ return -EINVAL;
+ value->vu16 = nla_get_u16(param_data);
+ break;
+ case DEVLINK_PARAM_TYPE_U32:
+ if (nla_len(param_data) != sizeof(u32))
+ return -EINVAL;
+ value->vu32 = nla_get_u32(param_data);
+ break;
+ case DEVLINK_PARAM_TYPE_STRING:
+ len = strnlen(nla_data(param_data), nla_len(param_data));
+ if (len == nla_len(param_data) ||
+ len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
+ return -EINVAL;
+ strcpy(value->vstr, nla_data(param_data));
+ break;
+ case DEVLINK_PARAM_TYPE_BOOL:
+ if (param_data && nla_len(param_data))
+ return -EINVAL;
+ value->vbool = nla_get_flag(param_data);
+ break;
+ }
+ return 0;
+}
+
+static struct devlink_param_item *
+devlink_param_get_from_info(struct list_head *param_list,
+ struct genl_info *info)
+{
+ char *param_name;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PARAM_NAME))
+ return NULL;
+
+ param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
+ return devlink_param_find_by_name(param_list, param_name);
+}
+
+static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_param_item *param_item;
+ struct sk_buff *msg;
+ int err;
+
+ param_item = devlink_param_get_from_info(&devlink->param_list, info);
+ if (!param_item)
+ return -EINVAL;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_param_fill(msg, devlink, 0, param_item,
+ DEVLINK_CMD_PARAM_GET,
+ info->snd_portid, info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
+ unsigned int port_index,
+ struct list_head *param_list,
+ struct genl_info *info,
+ enum devlink_command cmd)
+{
+ enum devlink_param_type param_type;
+ struct devlink_param_gset_ctx ctx;
+ enum devlink_param_cmode cmode;
+ struct devlink_param_item *param_item;
+ const struct devlink_param *param;
+ union devlink_param_value value;
+ int err = 0;
+
+ param_item = devlink_param_get_from_info(param_list, info);
+ if (!param_item)
+ return -EINVAL;
+ param = param_item->param;
+ err = devlink_param_type_get_from_info(info, ¶m_type);
+ if (err)
+ return err;
+ if (param_type != param->type)
+ return -EINVAL;
+ err = devlink_param_value_get_from_info(param, info, &value);
+ if (err)
+ return err;
+ if (param->validate) {
+ err = param->validate(devlink, param->id, value, info->extack);
+ if (err)
+ return err;
+ }
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PARAM_VALUE_CMODE))
+ return -EINVAL;
+ cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
+ if (!devlink_param_cmode_is_supported(param, cmode))
+ return -EOPNOTSUPP;
+
+ if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
+ if (param->type == DEVLINK_PARAM_TYPE_STRING)
+ strcpy(param_item->driverinit_value.vstr, value.vstr);
+ else
+ param_item->driverinit_value = value;
+ param_item->driverinit_value_valid = true;
+ } else {
+ if (!param->set)
+ return -EOPNOTSUPP;
+ ctx.val = value;
+ ctx.cmode = cmode;
+ err = devlink_param_set(devlink, param, &ctx);
+ if (err)
+ return err;
+ }
+
+ devlink_param_notify(devlink, port_index, param_item, cmd);
+ return 0;
+}
+
+static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+
+ return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
+ info, DEVLINK_CMD_PARAM_NEW);
+}
+
+static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ NL_SET_ERR_MSG_MOD(cb->extack, "Port params are not supported");
+ return msg->len;
+}
+
+static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ NL_SET_ERR_MSG_MOD(info->extack, "Port params are not supported");
+ return -EINVAL;
+}
+
+static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ NL_SET_ERR_MSG_MOD(info->extack, "Port params are not supported");
+ return -EINVAL;
+}
+
+static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
+ struct devlink *devlink,
+ struct devlink_snapshot *snapshot)
+{
+ struct nlattr *snap_attr;
+ int err;
+
+ snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
+ if (!snap_attr)
+ return -EINVAL;
+
+ err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
+ if (err)
+ goto nla_put_failure;
+
+ nla_nest_end(msg, snap_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, snap_attr);
+ return err;
+}
+
+static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
+ struct devlink *devlink,
+ struct devlink_region *region)
+{
+ struct devlink_snapshot *snapshot;
+ struct nlattr *snapshots_attr;
+ int err;
+
+ snapshots_attr = nla_nest_start_noflag(msg,
+ DEVLINK_ATTR_REGION_SNAPSHOTS);
+ if (!snapshots_attr)
+ return -EINVAL;
+
+ list_for_each_entry(snapshot, ®ion->snapshot_list, list) {
+ err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ nla_nest_end(msg, snapshots_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, snapshots_attr);
+ return err;
+}
+
+static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags,
+ struct devlink_region *region)
+{
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ err = devlink_nl_put_handle(msg, devlink);
+ if (err)
+ goto nla_put_failure;
+
+ if (region->port) {
+ err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
+ region->port->index);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
+ if (err)
+ goto nla_put_failure;
+
+ err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
+ region->size,
+ DEVLINK_ATTR_PAD);
+ if (err)
+ goto nla_put_failure;
+
+ err = nla_put_u32(msg, DEVLINK_ATTR_REGION_MAX_SNAPSHOTS,
+ region->max_snapshots);
+ if (err)
+ goto nla_put_failure;
+
+ err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
+ if (err)
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return err;
+}
+
+static struct sk_buff *
+devlink_nl_region_notify_build(struct devlink_region *region,
+ struct devlink_snapshot *snapshot,
+ enum devlink_command cmd, u32 portid, u32 seq)
+{
+ struct devlink *devlink = region->devlink;
+ struct sk_buff *msg;
+ void *hdr;
+ int err;
+
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return ERR_PTR(-ENOMEM);
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
+ if (!hdr) {
+ err = -EMSGSIZE;
+ goto out_free_msg;
+ }
+
+ err = devlink_nl_put_handle(msg, devlink);
+ if (err)
+ goto out_cancel_msg;
+
+ if (region->port) {
+ err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
+ region->port->index);
+ if (err)
+ goto out_cancel_msg;
+ }
+
+ err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
+ region->ops->name);
+ if (err)
+ goto out_cancel_msg;
+
+ if (snapshot) {
+ err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
+ snapshot->id);
+ if (err)
+ goto out_cancel_msg;
+ } else {
+ err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
+ region->size, DEVLINK_ATTR_PAD);
+ if (err)
+ goto out_cancel_msg;
+ }
+ genlmsg_end(msg, hdr);
+
+ return msg;
+
+out_cancel_msg:
+ genlmsg_cancel(msg, hdr);
+out_free_msg:
+ nlmsg_free(msg);
+ return ERR_PTR(err);
+}
+
+static void devlink_nl_region_notify(struct devlink_region *region,
+ struct devlink_snapshot *snapshot,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = region->devlink;
+ struct sk_buff *msg;
+
+ WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
+ if (IS_ERR(msg))
+ return;
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+/**
+ * __devlink_snapshot_id_increment - Increment number of snapshots using an id
+ * @devlink: devlink instance
+ * @id: the snapshot id
+ *
+ * Track when a new snapshot begins using an id. Load the count for the
+ * given id from the snapshot xarray, increment it, and store it back.
+ *
+ * Called when a new snapshot is created with the given id.
+ *
+ * The id *must* have been previously allocated by
+ * devlink_region_snapshot_id_get().
+ *
+ * Returns 0 on success, or an error on failure.
+ */
+static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
+{
+ unsigned long count;
+ void *p;
+ int err;
+
+ xa_lock(&devlink->snapshot_ids);
+ p = xa_load(&devlink->snapshot_ids, id);
+ if (WARN_ON(!p)) {
+ err = -EINVAL;
+ goto unlock;
+ }
+
+ if (WARN_ON(!xa_is_value(p))) {
+ err = -EINVAL;
+ goto unlock;
+ }
+
+ count = xa_to_value(p);
+ count++;
+
+ err = xa_err(__xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
+ GFP_ATOMIC));
+unlock:
+ xa_unlock(&devlink->snapshot_ids);
+ return err;
+}
+
+/**
+ * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
+ * @devlink: devlink instance
+ * @id: the snapshot id
+ *
+ * Track when a snapshot is deleted and stops using an id. Load the count
+ * for the given id from the snapshot xarray, decrement it, and store it
+ * back.
+ *
+ * If the count reaches zero, erase this id from the xarray, freeing it
+ * up for future re-use by devlink_region_snapshot_id_get().
+ *
+ * Called when a snapshot using the given id is deleted, and when the
+ * initial allocator of the id is finished using it.
+ */
+static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
+{
+ unsigned long count;
+ void *p;
+
+ xa_lock(&devlink->snapshot_ids);
+ p = xa_load(&devlink->snapshot_ids, id);
+ if (WARN_ON(!p))
+ goto unlock;
+
+ if (WARN_ON(!xa_is_value(p)))
+ goto unlock;
+
+ count = xa_to_value(p);
+
+ if (count > 1) {
+ count--;
+ __xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
+ GFP_ATOMIC);
+ } else {
+ /* If this was the last user, we can erase this id */
+ __xa_erase(&devlink->snapshot_ids, id);
+ }
+unlock:
+ xa_unlock(&devlink->snapshot_ids);
+}
+
+/**
+ * __devlink_snapshot_id_insert - Insert a specific snapshot ID
+ * @devlink: devlink instance
+ * @id: the snapshot id
+ *
+ * Mark the given snapshot id as used by inserting a zero value into the
+ * snapshot xarray.
+ *
+ * This must be called while holding the devlink instance lock. Unlike
+ * devlink_snapshot_id_get, the initial reference count is zero, not one.
+ * It is expected that the id will immediately be used before
+ * releasing the devlink instance lock.
+ *
+ * Returns zero on success, or an error code if the snapshot id could not
+ * be inserted.
+ */
+static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
+{
+ int err;
+
+ xa_lock(&devlink->snapshot_ids);
+ if (xa_load(&devlink->snapshot_ids, id)) {
+ xa_unlock(&devlink->snapshot_ids);
+ return -EEXIST;
+ }
+ err = xa_err(__xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
+ GFP_ATOMIC));
+ xa_unlock(&devlink->snapshot_ids);
+ return err;
+}
+
+/**
+ * __devlink_region_snapshot_id_get - get snapshot ID
+ * @devlink: devlink instance
+ * @id: storage to return snapshot id
+ *
+ * Allocates a new snapshot id. Returns zero on success, or a negative
+ * error on failure. Must be called while holding the devlink instance
+ * lock.
+ *
+ * Snapshot IDs are tracked using an xarray which stores the number of
+ * users of the snapshot id.
+ *
+ * Note that the caller of this function counts as a 'user', in order to
+ * avoid race conditions. The caller must release its hold on the
+ * snapshot by using devlink_region_snapshot_id_put.
+ */
+static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
+{
+ return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
+ xa_limit_32b, GFP_KERNEL);
+}
+
+/**
+ * __devlink_region_snapshot_create - create a new snapshot
+ * This will add a new snapshot of a region. The snapshot
+ * will be stored on the region struct and can be accessed
+ * from devlink. This is useful for future analyses of snapshots.
+ * Multiple snapshots can be created on a region.
+ * The @snapshot_id should be obtained using the getter function.
+ *
+ * Must be called only while holding the region snapshot lock.
+ *
+ * @region: devlink region of the snapshot
+ * @data: snapshot data
+ * @snapshot_id: snapshot id to be created
+ */
+static int
+__devlink_region_snapshot_create(struct devlink_region *region,
+ u8 *data, u32 snapshot_id)
+{
+ struct devlink *devlink = region->devlink;
+ struct devlink_snapshot *snapshot;
+ int err;
+
+ lockdep_assert_held(®ion->snapshot_lock);
+
+ /* check if region can hold one more snapshot */
+ if (region->cur_snapshots == region->max_snapshots)
+ return -ENOSPC;
+
+ if (devlink_region_snapshot_get_by_id(region, snapshot_id))
+ return -EEXIST;
+
+ snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
+ if (!snapshot)
+ return -ENOMEM;
+
+ err = __devlink_snapshot_id_increment(devlink, snapshot_id);
+ if (err)
+ goto err_snapshot_id_increment;
+
+ snapshot->id = snapshot_id;
+ snapshot->region = region;
+ snapshot->data = data;
+
+ list_add_tail(&snapshot->list, ®ion->snapshot_list);
+
+ region->cur_snapshots++;
+
+ devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
+ return 0;
+
+err_snapshot_id_increment:
+ kfree(snapshot);
+ return err;
+}
+
+static void devlink_region_snapshot_del(struct devlink_region *region,
+ struct devlink_snapshot *snapshot)
+{
+ struct devlink *devlink = region->devlink;
+
+ lockdep_assert_held(®ion->snapshot_lock);
+
+ devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
+ region->cur_snapshots--;
+ list_del(&snapshot->list);
+ region->ops->destructor(snapshot->data);
+ __devlink_snapshot_id_decrement(devlink, snapshot->id);
+ kfree(snapshot);
+}
+
+static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_port *port = NULL;
+ struct devlink_region *region;
+ const char *region_name;
+ struct sk_buff *msg;
+ unsigned int index;
+ int err;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME))
+ return -EINVAL;
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ port = devlink_port_get_by_index(devlink, index);
+ if (!port)
+ return -ENODEV;
+ }
+
+ region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
+ if (port)
+ region = devlink_port_region_get_by_name(port, region_name);
+ else
+ region = devlink_region_get_by_name(devlink, region_name);
+
+ if (!region)
+ return -EINVAL;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
+ info->snd_portid, info->snd_seq, 0,
+ region);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb,
+ struct devlink_port *port,
+ int *idx,
+ int start)
+{
+ struct devlink_region *region;
+ int err = 0;
+
+ list_for_each_entry(region, &port->region_list, list) {
+ if (*idx < start) {
+ (*idx)++;
+ continue;
+ }
+ err = devlink_nl_region_fill(msg, port->devlink,
+ DEVLINK_CMD_REGION_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI, region);
+ if (err)
+ goto out;
+ (*idx)++;
+ }
+
+out:
+ return err;
+}
+
+static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb,
+ struct devlink *devlink,
+ int *idx,
+ int start)
+{
+ struct devlink_region *region;
+ struct devlink_port *port;
+ unsigned long port_index;
+ int err = 0;
+
+ devl_lock(devlink);
+ list_for_each_entry(region, &devlink->region_list, list) {
+ if (*idx < start) {
+ (*idx)++;
+ continue;
+ }
+ err = devlink_nl_region_fill(msg, devlink,
+ DEVLINK_CMD_REGION_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI, region);
+ if (err)
+ goto out;
+ (*idx)++;
+ }
+
+ xa_for_each(&devlink->ports, port_index, port) {
+ err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
+ start);
+ if (err)
+ goto out;
+ }
+
+out:
+ devl_unlock(devlink);
+ return err;
+}
+
+static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
+ &idx, start);
+ devlink_put(devlink);
+ if (err)
+ goto out;
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_nl_cmd_region_del(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_snapshot *snapshot;
+ struct devlink_port *port = NULL;
+ struct devlink_region *region;
+ const char *region_name;
+ unsigned int index;
+ u32 snapshot_id;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME) ||
+ GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_SNAPSHOT_ID))
+ return -EINVAL;
+
+ region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
+ snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ port = devlink_port_get_by_index(devlink, index);
+ if (!port)
+ return -ENODEV;
+ }
+
+ if (port)
+ region = devlink_port_region_get_by_name(port, region_name);
+ else
+ region = devlink_region_get_by_name(devlink, region_name);
+
+ if (!region)
+ return -EINVAL;
+
+ mutex_lock(®ion->snapshot_lock);
+ snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
+ if (!snapshot) {
+ mutex_unlock(®ion->snapshot_lock);
+ return -EINVAL;
+ }
+
+ devlink_region_snapshot_del(region, snapshot);
+ mutex_unlock(®ion->snapshot_lock);
+ return 0;
+}
+
+static int
+devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_snapshot *snapshot;
+ struct devlink_port *port = NULL;
+ struct nlattr *snapshot_id_attr;
+ struct devlink_region *region;
+ const char *region_name;
+ unsigned int index;
+ u32 snapshot_id;
+ u8 *data;
+ int err;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME)) {
+ NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
+ return -EINVAL;
+ }
+
+ region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ port = devlink_port_get_by_index(devlink, index);
+ if (!port)
+ return -ENODEV;
+ }
+
+ if (port)
+ region = devlink_port_region_get_by_name(port, region_name);
+ else
+ region = devlink_region_get_by_name(devlink, region_name);
+
+ if (!region) {
+ NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
+ return -EINVAL;
+ }
+
+ if (!region->ops->snapshot) {
+ NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
+ return -EOPNOTSUPP;
+ }
+
+ mutex_lock(®ion->snapshot_lock);
+
+ if (region->cur_snapshots == region->max_snapshots) {
+ NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
+ err = -ENOSPC;
+ goto unlock;
+ }
+
+ snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
+ if (snapshot_id_attr) {
+ snapshot_id = nla_get_u32(snapshot_id_attr);
+
+ if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
+ NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
+ err = -EEXIST;
+ goto unlock;
+ }
+
+ err = __devlink_snapshot_id_insert(devlink, snapshot_id);
+ if (err)
+ goto unlock;
+ } else {
+ err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
+ goto unlock;
+ }
+ }
+
+ if (port)
+ err = region->port_ops->snapshot(port, region->port_ops,
+ info->extack, &data);
+ else
+ err = region->ops->snapshot(devlink, region->ops,
+ info->extack, &data);
+ if (err)
+ goto err_snapshot_capture;
+
+ err = __devlink_region_snapshot_create(region, data, snapshot_id);
+ if (err)
+ goto err_snapshot_create;
+
+ if (!snapshot_id_attr) {
+ struct sk_buff *msg;
+
+ snapshot = devlink_region_snapshot_get_by_id(region,
+ snapshot_id);
+ if (WARN_ON(!snapshot)) {
+ err = -EINVAL;
+ goto unlock;
+ }
+
+ msg = devlink_nl_region_notify_build(region, snapshot,
+ DEVLINK_CMD_REGION_NEW,
+ info->snd_portid,
+ info->snd_seq);
+ err = PTR_ERR_OR_ZERO(msg);
+ if (err)
+ goto err_notify;
+
+ err = genlmsg_reply(msg, info);
+ if (err)
+ goto err_notify;
+ }
+
+ mutex_unlock(®ion->snapshot_lock);
+ return 0;
+
+err_snapshot_create:
+ region->ops->destructor(data);
+err_snapshot_capture:
+ __devlink_snapshot_id_decrement(devlink, snapshot_id);
+ mutex_unlock(®ion->snapshot_lock);
+ return err;
+
+err_notify:
+ devlink_region_snapshot_del(region, snapshot);
+unlock:
+ mutex_unlock(®ion->snapshot_lock);
+ return err;
+}
+
+static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
+ u8 *chunk, u32 chunk_size,
+ u64 addr)
+{
+ struct nlattr *chunk_attr;
+ int err;
+
+ chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
+ if (!chunk_attr)
+ return -EINVAL;
+
+ err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
+ if (err)
+ goto nla_put_failure;
+
+ err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
+ DEVLINK_ATTR_PAD);
+ if (err)
+ goto nla_put_failure;
+
+ nla_nest_end(msg, chunk_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, chunk_attr);
+ return err;
+}
+
+#define DEVLINK_REGION_READ_CHUNK_SIZE 256
+
+typedef int devlink_chunk_fill_t(void *cb_priv, u8 *chunk, u32 chunk_size,
+ u64 curr_offset,
+ struct netlink_ext_ack *extack);
+
+static int
+devlink_nl_region_read_fill(struct sk_buff *skb, devlink_chunk_fill_t *cb,
+ void *cb_priv, u64 start_offset, u64 end_offset,
+ u64 *new_offset, struct netlink_ext_ack *extack)
+{
+ u64 curr_offset = start_offset;
+ int err = 0;
+ u8 *data;
+
+ /* Allocate and re-use a single buffer */
+ data = kmalloc(DEVLINK_REGION_READ_CHUNK_SIZE, GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ *new_offset = start_offset;
+
+ while (curr_offset < end_offset) {
+ u32 data_size;
+
+ data_size = min_t(u32, end_offset - curr_offset,
+ DEVLINK_REGION_READ_CHUNK_SIZE);
+
+ err = cb(cb_priv, data, data_size, curr_offset, extack);
+ if (err)
+ break;
+
+ err = devlink_nl_cmd_region_read_chunk_fill(skb, data, data_size, curr_offset);
+ if (err)
+ break;
+
+ curr_offset += data_size;
+ }
+ *new_offset = curr_offset;
+
+ kfree(data);
+
+ return err;
+}
+
+static int
+devlink_region_snapshot_fill(void *cb_priv, u8 *chunk, u32 chunk_size,
+ u64 curr_offset,
+ struct netlink_ext_ack __always_unused *extack)
+{
+ struct devlink_snapshot *snapshot = cb_priv;
+
+ memcpy(chunk, &snapshot->data[curr_offset], chunk_size);
+
+ return 0;
+}
+
+static int
+devlink_region_port_direct_fill(void *cb_priv, u8 *chunk, u32 chunk_size,
+ u64 curr_offset, struct netlink_ext_ack *extack)
+{
+ struct devlink_region *region = cb_priv;
+
+ return region->port_ops->read(region->port, region->port_ops, extack,
+ curr_offset, chunk_size, chunk);
+}
+
+static int
+devlink_region_direct_fill(void *cb_priv, u8 *chunk, u32 chunk_size,
+ u64 curr_offset, struct netlink_ext_ack *extack)
+{
+ struct devlink_region *region = cb_priv;
+
+ return region->ops->read(region->devlink, region->ops, extack,
+ curr_offset, chunk_size, chunk);
+}
+
+static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ const struct genl_dumpit_info *info = genl_dumpit_info(cb);
+ struct nlattr *chunks_attr, *region_attr, *snapshot_attr;
+ u64 ret_offset, start_offset, end_offset = U64_MAX;
+ struct nlattr **attrs = info->attrs;
+ struct devlink_port *port = NULL;
+ devlink_chunk_fill_t *region_cb;
+ struct devlink_region *region;
+ const char *region_name;
+ struct devlink *devlink;
+ unsigned int index;
+ void *region_cb_priv;
+ void *hdr;
+ int err;
+
+ start_offset = *((u64 *)&cb->args[0]);
+
+ devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
+ if (IS_ERR(devlink))
+ return PTR_ERR(devlink);
+
+ devl_lock(devlink);
+
+ if (!attrs[DEVLINK_ATTR_REGION_NAME]) {
+ NL_SET_ERR_MSG(cb->extack, "No region name provided");
+ err = -EINVAL;
+ goto out_unlock;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ port = devlink_port_get_by_index(devlink, index);
+ if (!port) {
+ err = -ENODEV;
+ goto out_unlock;
+ }
+ }
+
+ region_attr = attrs[DEVLINK_ATTR_REGION_NAME];
+ region_name = nla_data(region_attr);
+
+ if (port)
+ region = devlink_port_region_get_by_name(port, region_name);
+ else
+ region = devlink_region_get_by_name(devlink, region_name);
+
+ if (!region) {
+ NL_SET_ERR_MSG_ATTR(cb->extack, region_attr, "Requested region does not exist");
+ err = -EINVAL;
+ goto out_unlock;
+ }
+
+ snapshot_attr = attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
+ if (!snapshot_attr) {
+ if (!nla_get_flag(attrs[DEVLINK_ATTR_REGION_DIRECT])) {
+ NL_SET_ERR_MSG(cb->extack, "No snapshot id provided");
+ err = -EINVAL;
+ goto out_unlock;
+ }
+
+ if (!region->ops->read) {
+ NL_SET_ERR_MSG(cb->extack, "Requested region does not support direct read");
+ err = -EOPNOTSUPP;
+ goto out_unlock;
+ }
+
+ if (port)
+ region_cb = &devlink_region_port_direct_fill;
+ else
+ region_cb = &devlink_region_direct_fill;
+ region_cb_priv = region;
+ } else {
+ struct devlink_snapshot *snapshot;
+ u32 snapshot_id;
+
+ if (nla_get_flag(attrs[DEVLINK_ATTR_REGION_DIRECT])) {
+ NL_SET_ERR_MSG_ATTR(cb->extack, snapshot_attr, "Direct region read does not use snapshot");
+ err = -EINVAL;
+ goto out_unlock;
+ }
+
+ snapshot_id = nla_get_u32(snapshot_attr);
+ snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
+ if (!snapshot) {
+ NL_SET_ERR_MSG_ATTR(cb->extack, snapshot_attr, "Requested snapshot does not exist");
+ err = -EINVAL;
+ goto out_unlock;
+ }
+ region_cb = &devlink_region_snapshot_fill;
+ region_cb_priv = snapshot;
+ }
+
+ if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
+ attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
+ if (!start_offset)
+ start_offset =
+ nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
+
+ end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
+ end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
+ }
+
+ if (end_offset > region->size)
+ end_offset = region->size;
+
+ /* return 0 if there is no further data to read */
+ if (start_offset == end_offset) {
+ err = 0;
+ goto out_unlock;
+ }
+
+ hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+ &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
+ DEVLINK_CMD_REGION_READ);
+ if (!hdr) {
+ err = -EMSGSIZE;
+ goto out_unlock;
+ }
+
+ err = devlink_nl_put_handle(skb, devlink);
+ if (err)
+ goto nla_put_failure;
+
+ if (region->port) {
+ err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
+ region->port->index);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
+ if (err)
+ goto nla_put_failure;
+
+ chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
+ if (!chunks_attr) {
+ err = -EMSGSIZE;
+ goto nla_put_failure;
+ }
+
+ err = devlink_nl_region_read_fill(skb, region_cb, region_cb_priv,
+ start_offset, end_offset, &ret_offset,
+ cb->extack);
+
+ if (err && err != -EMSGSIZE)
+ goto nla_put_failure;
+
+ /* Check if there was any progress done to prevent infinite loop */
+ if (ret_offset == start_offset) {
+ err = -EINVAL;
+ goto nla_put_failure;
+ }
+
+ *((u64 *)&cb->args[0]) = ret_offset;
+
+ nla_nest_end(skb, chunks_attr);
+ genlmsg_end(skb, hdr);
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ return skb->len;
+
+nla_put_failure:
+ genlmsg_cancel(skb, hdr);
+out_unlock:
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ return err;
+}
+
+int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
+{
+ if (!req->msg)
+ return 0;
+ return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
+}
+EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
+
+int devlink_info_board_serial_number_put(struct devlink_info_req *req,
+ const char *bsn)
+{
+ if (!req->msg)
+ return 0;
+ return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
+ bsn);
+}
+EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
+
+static int devlink_info_version_put(struct devlink_info_req *req, int attr,
+ const char *version_name,
+ const char *version_value,
+ enum devlink_info_version_type version_type)
+{
+ struct nlattr *nest;
+ int err;
+
+ if (req->version_cb)
+ req->version_cb(version_name, version_type,
+ req->version_cb_priv);
+
+ if (!req->msg)
+ return 0;
+
+ nest = nla_nest_start_noflag(req->msg, attr);
+ if (!nest)
+ return -EMSGSIZE;
+
+ err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
+ version_name);
+ if (err)
+ goto nla_put_failure;
+
+ err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
+ version_value);
+ if (err)
+ goto nla_put_failure;
+
+ nla_nest_end(req->msg, nest);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(req->msg, nest);
+ return err;
+}
+
+int devlink_info_version_fixed_put(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
+ version_name, version_value,
+ DEVLINK_INFO_VERSION_TYPE_NONE);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
+
+int devlink_info_version_stored_put(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
+ version_name, version_value,
+ DEVLINK_INFO_VERSION_TYPE_NONE);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
+
+int devlink_info_version_stored_put_ext(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value,
+ enum devlink_info_version_type version_type)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
+ version_name, version_value,
+ version_type);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_stored_put_ext);
+
+int devlink_info_version_running_put(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
+ version_name, version_value,
+ DEVLINK_INFO_VERSION_TYPE_NONE);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
+
+int devlink_info_version_running_put_ext(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value,
+ enum devlink_info_version_type version_type)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
+ version_name, version_value,
+ version_type);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_running_put_ext);
+
+static int devlink_nl_driver_info_get(struct device_driver *drv,
+ struct devlink_info_req *req)
+{
+ if (!drv)
+ return 0;
+
+ if (drv->name[0])
+ return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME,
+ drv->name);
+
+ return 0;
+}
+
+static int
+devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags, struct netlink_ext_ack *extack)
+{
+ struct device *dev = devlink_to_dev(devlink);
+ struct devlink_info_req req = {};
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ err = -EMSGSIZE;
+ if (devlink_nl_put_handle(msg, devlink))
+ goto err_cancel_msg;
+
+ req.msg = msg;
+ if (devlink->ops->info_get) {
+ err = devlink->ops->info_get(devlink, &req, extack);
+ if (err)
+ goto err_cancel_msg;
+ }
+
+ err = devlink_nl_driver_info_get(dev->driver, &req);
+ if (err)
+ goto err_cancel_msg;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+err_cancel_msg:
+ genlmsg_cancel(msg, hdr);
+ return err;
+}
+
+static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
+ info->snd_portid, info->snd_seq, 0,
+ info->extack);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ if (idx < start)
+ goto inc;
+
+ devl_lock(devlink);
+ err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI,
+ cb->extack);
+ devl_unlock(devlink);
+ if (err == -EOPNOTSUPP)
+ err = 0;
+ else if (err) {
+ devlink_put(devlink);
+ break;
+ }
+inc:
+ idx++;
+ devlink_put(devlink);
+ }
+
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+struct devlink_fmsg_item {
+ struct list_head list;
+ int attrtype;
+ u8 nla_type;
+ u16 len;
+ int value[];
+};
+
+struct devlink_fmsg {
+ struct list_head item_list;
+ bool putting_binary; /* This flag forces enclosing of binary data
+ * in an array brackets. It forces using
+ * of designated API:
+ * devlink_fmsg_binary_pair_nest_start()
+ * devlink_fmsg_binary_pair_nest_end()
+ */
+};
+
+static struct devlink_fmsg *devlink_fmsg_alloc(void)
+{
+ struct devlink_fmsg *fmsg;
+
+ fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
+ if (!fmsg)
+ return NULL;
+
+ INIT_LIST_HEAD(&fmsg->item_list);
+
+ return fmsg;
+}
+
+static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
+{
+ struct devlink_fmsg_item *item, *tmp;
+
+ list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
+ list_del(&item->list);
+ kfree(item);
+ }
+ kfree(fmsg);
+}
+
+static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
+ int attrtype)
+{
+ struct devlink_fmsg_item *item;
+
+ item = kzalloc(sizeof(*item), GFP_KERNEL);
+ if (!item)
+ return -ENOMEM;
+
+ item->attrtype = attrtype;
+ list_add_tail(&item->list, &fmsg->item_list);
+
+ return 0;
+}
+
+int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
+
+static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
+}
+
+int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_nest_end(fmsg);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
+
+#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
+
+static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
+{
+ struct devlink_fmsg_item *item;
+
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
+ return -EMSGSIZE;
+
+ item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
+ if (!item)
+ return -ENOMEM;
+
+ item->nla_type = NLA_NUL_STRING;
+ item->len = strlen(name) + 1;
+ item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
+ memcpy(&item->value, name, item->len);
+ list_add_tail(&item->list, &fmsg->item_list);
+
+ return 0;
+}
+
+int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
+{
+ int err;
+
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_put_name(fmsg, name);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
+
+int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_nest_end(fmsg);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
+
+int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
+ const char *name)
+{
+ int err;
+
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
+
+int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
+{
+ int err;
+
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ err = devlink_fmsg_nest_end(fmsg);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
+
+int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
+ const char *name)
+{
+ int err;
+
+ err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ fmsg->putting_binary = true;
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
+
+int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
+{
+ if (!fmsg->putting_binary)
+ return -EINVAL;
+
+ fmsg->putting_binary = false;
+ return devlink_fmsg_arr_pair_nest_end(fmsg);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
+
+static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
+ const void *value, u16 value_len,
+ u8 value_nla_type)
+{
+ struct devlink_fmsg_item *item;
+
+ if (value_len > DEVLINK_FMSG_MAX_SIZE)
+ return -EMSGSIZE;
+
+ item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
+ if (!item)
+ return -ENOMEM;
+
+ item->nla_type = value_nla_type;
+ item->len = value_len;
+ item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
+ memcpy(&item->value, value, item->len);
+ list_add_tail(&item->list, &fmsg->item_list);
+
+ return 0;
+}
+
+static int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
+}
+
+static int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
+}
+
+int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
+
+static int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
+}
+
+int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
+ NLA_NUL_STRING);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
+
+int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
+ u16 value_len)
+{
+ if (!fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
+
+int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ bool value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_bool_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
+
+int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ u8 value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_u8_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
+
+int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ u32 value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_u32_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
+
+int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ u64 value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_u64_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
+
+int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ const char *value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_string_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
+
+int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ const void *value, u32 value_len)
+{
+ u32 data_size;
+ int end_err;
+ u32 offset;
+ int err;
+
+ err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ for (offset = 0; offset < value_len; offset += data_size) {
+ data_size = value_len - offset;
+ if (data_size > DEVLINK_FMSG_MAX_SIZE)
+ data_size = DEVLINK_FMSG_MAX_SIZE;
+ err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
+ if (err)
+ break;
+ /* Exit from loop with a break (instead of
+ * return) to make sure putting_binary is turned off in
+ * devlink_fmsg_binary_pair_nest_end
+ */
+ }
+
+ end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
+ if (end_err)
+ err = end_err;
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
+
+static int
+devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
+{
+ switch (msg->nla_type) {
+ case NLA_FLAG:
+ case NLA_U8:
+ case NLA_U32:
+ case NLA_U64:
+ case NLA_NUL_STRING:
+ case NLA_BINARY:
+ return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
+ msg->nla_type);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int
+devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
+{
+ int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
+ u8 tmp;
+
+ switch (msg->nla_type) {
+ case NLA_FLAG:
+ /* Always provide flag data, regardless of its value */
+ tmp = *(bool *) msg->value;
+
+ return nla_put_u8(skb, attrtype, tmp);
+ case NLA_U8:
+ return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
+ case NLA_U32:
+ return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
+ case NLA_U64:
+ return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
+ DEVLINK_ATTR_PAD);
+ case NLA_NUL_STRING:
+ return nla_put_string(skb, attrtype, (char *) &msg->value);
+ case NLA_BINARY:
+ return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int
+devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
+ int *start)
+{
+ struct devlink_fmsg_item *item;
+ struct nlattr *fmsg_nlattr;
+ int i = 0;
+ int err;
+
+ fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
+ if (!fmsg_nlattr)
+ return -EMSGSIZE;
+
+ list_for_each_entry(item, &fmsg->item_list, list) {
+ if (i < *start) {
+ i++;
+ continue;
+ }
+
+ switch (item->attrtype) {
+ case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
+ case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
+ case DEVLINK_ATTR_FMSG_ARR_NEST_START:
+ case DEVLINK_ATTR_FMSG_NEST_END:
+ err = nla_put_flag(skb, item->attrtype);
+ break;
+ case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
+ err = devlink_fmsg_item_fill_type(item, skb);
+ if (err)
+ break;
+ err = devlink_fmsg_item_fill_data(item, skb);
+ break;
+ case DEVLINK_ATTR_FMSG_OBJ_NAME:
+ err = nla_put_string(skb, item->attrtype,
+ (char *) &item->value);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+ if (!err)
+ *start = ++i;
+ else
+ break;
+ }
+
+ nla_nest_end(skb, fmsg_nlattr);
+ return err;
+}
+
+static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
+ struct genl_info *info,
+ enum devlink_command cmd, int flags)
+{
+ struct nlmsghdr *nlh;
+ struct sk_buff *skb;
+ bool last = false;
+ int index = 0;
+ void *hdr;
+ int err;
+
+ while (!last) {
+ int tmp_index = index;
+
+ skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
+ &devlink_nl_family, flags | NLM_F_MULTI, cmd);
+ if (!hdr) {
+ err = -EMSGSIZE;
+ goto nla_put_failure;
+ }
+
+ err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
+ if (!err)
+ last = true;
+ else if (err != -EMSGSIZE || tmp_index == index)
+ goto nla_put_failure;
+
+ genlmsg_end(skb, hdr);
+ err = genlmsg_reply(skb, info);
+ if (err)
+ return err;
+ }
+
+ skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+ nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
+ NLMSG_DONE, 0, flags | NLM_F_MULTI);
+ if (!nlh) {
+ err = -EMSGSIZE;
+ goto nla_put_failure;
+ }
+
+ return genlmsg_reply(skb, info);
+
+nla_put_failure:
+ nlmsg_free(skb);
+ return err;
+}
+
+static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
+ struct netlink_callback *cb,
+ enum devlink_command cmd)
+{
+ int index = cb->args[0];
+ int tmp_index = index;
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+ &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
+ if (!hdr) {
+ err = -EMSGSIZE;
+ goto nla_put_failure;
+ }
+
+ err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
+ if ((err && err != -EMSGSIZE) || tmp_index == index)
+ goto nla_put_failure;
+
+ cb->args[0] = index;
+ genlmsg_end(skb, hdr);
+ return skb->len;
+
+nla_put_failure:
+ genlmsg_cancel(skb, hdr);
+ return err;
+}
+
+struct devlink_health_reporter {
+ struct list_head list;
+ void *priv;
+ const struct devlink_health_reporter_ops *ops;
+ struct devlink *devlink;
+ struct devlink_port *devlink_port;
+ struct devlink_fmsg *dump_fmsg;
+ struct mutex dump_lock; /* lock parallel read/write from dump buffers */
+ u64 graceful_period;
+ bool auto_recover;
+ bool auto_dump;
+ u8 health_state;
+ u64 dump_ts;
+ u64 dump_real_ts;
+ u64 error_count;
+ u64 recovery_count;
+ u64 last_recovery_ts;
+ refcount_t refcount;
+};
+
+void *
+devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
+{
+ return reporter->priv;
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
+
+static struct devlink_health_reporter *
+__devlink_health_reporter_find_by_name(struct list_head *reporter_list,
+ struct mutex *list_lock,
+ const char *reporter_name)
+{
+ struct devlink_health_reporter *reporter;
+
+ lockdep_assert_held(list_lock);
+ list_for_each_entry(reporter, reporter_list, list)
+ if (!strcmp(reporter->ops->name, reporter_name))
+ return reporter;
+ return NULL;
+}
+
+static struct devlink_health_reporter *
+devlink_health_reporter_find_by_name(struct devlink *devlink,
+ const char *reporter_name)
+{
+ return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
+ &devlink->reporters_lock,
+ reporter_name);
+}
+
+static struct devlink_health_reporter *
+devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
+ const char *reporter_name)
+{
+ return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
+ &devlink_port->reporters_lock,
+ reporter_name);
+}
+
+static struct devlink_health_reporter *
+__devlink_health_reporter_create(struct devlink *devlink,
+ const struct devlink_health_reporter_ops *ops,
+ u64 graceful_period, void *priv)
+{
+ struct devlink_health_reporter *reporter;
+
+ if (WARN_ON(graceful_period && !ops->recover))
+ return ERR_PTR(-EINVAL);
+
+ reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
+ if (!reporter)
+ return ERR_PTR(-ENOMEM);
+
+ reporter->priv = priv;
+ reporter->ops = ops;
+ reporter->devlink = devlink;
+ reporter->graceful_period = graceful_period;
+ reporter->auto_recover = !!ops->recover;
+ reporter->auto_dump = !!ops->dump;
+ mutex_init(&reporter->dump_lock);
+ refcount_set(&reporter->refcount, 1);
+ return reporter;
+}
+
+/**
+ * devlink_port_health_reporter_create - create devlink health reporter for
+ * specified port instance
+ *
+ * @port: devlink_port which should contain the new reporter
+ * @ops: ops
+ * @graceful_period: to avoid recovery loops, in msecs
+ * @priv: priv
+ */
+struct devlink_health_reporter *
+devlink_port_health_reporter_create(struct devlink_port *port,
+ const struct devlink_health_reporter_ops *ops,
+ u64 graceful_period, void *priv)
+{
+ struct devlink_health_reporter *reporter;
+
+ mutex_lock(&port->reporters_lock);
+ if (__devlink_health_reporter_find_by_name(&port->reporter_list,
+ &port->reporters_lock, ops->name)) {
+ reporter = ERR_PTR(-EEXIST);
+ goto unlock;
+ }
+
+ reporter = __devlink_health_reporter_create(port->devlink, ops,
+ graceful_period, priv);
+ if (IS_ERR(reporter))
+ goto unlock;
+
+ reporter->devlink_port = port;
+ list_add_tail(&reporter->list, &port->reporter_list);
+unlock:
+ mutex_unlock(&port->reporters_lock);
+ return reporter;
+}
+EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
+
+/**
+ * devlink_health_reporter_create - create devlink health reporter
+ *
+ * @devlink: devlink
+ * @ops: ops
+ * @graceful_period: to avoid recovery loops, in msecs
+ * @priv: priv
+ */
+struct devlink_health_reporter *
+devlink_health_reporter_create(struct devlink *devlink,
+ const struct devlink_health_reporter_ops *ops,
+ u64 graceful_period, void *priv)
+{
+ struct devlink_health_reporter *reporter;
+
+ mutex_lock(&devlink->reporters_lock);
+ if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
+ reporter = ERR_PTR(-EEXIST);
+ goto unlock;
+ }
+
+ reporter = __devlink_health_reporter_create(devlink, ops,
+ graceful_period, priv);
+ if (IS_ERR(reporter))
+ goto unlock;
+
+ list_add_tail(&reporter->list, &devlink->reporter_list);
+unlock:
+ mutex_unlock(&devlink->reporters_lock);
+ return reporter;
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
+
+static void
+devlink_health_reporter_free(struct devlink_health_reporter *reporter)
+{
+ mutex_destroy(&reporter->dump_lock);
+ if (reporter->dump_fmsg)
+ devlink_fmsg_free(reporter->dump_fmsg);
+ kfree(reporter);
+}
+
+static void
+devlink_health_reporter_put(struct devlink_health_reporter *reporter)
+{
+ if (refcount_dec_and_test(&reporter->refcount))
+ devlink_health_reporter_free(reporter);
+}
+
+static void
+__devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
+{
+ list_del(&reporter->list);
+ devlink_health_reporter_put(reporter);
+}
+
+/**
+ * devlink_health_reporter_destroy - destroy devlink health reporter
+ *
+ * @reporter: devlink health reporter to destroy
+ */
+void
+devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
+{
+ struct mutex *lock = &reporter->devlink->reporters_lock;
+
+ mutex_lock(lock);
+ __devlink_health_reporter_destroy(reporter);
+ mutex_unlock(lock);
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
+
+/**
+ * devlink_port_health_reporter_destroy - destroy devlink port health reporter
+ *
+ * @reporter: devlink health reporter to destroy
+ */
+void
+devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
+{
+ struct mutex *lock = &reporter->devlink_port->reporters_lock;
+
+ mutex_lock(lock);
+ __devlink_health_reporter_destroy(reporter);
+ mutex_unlock(lock);
+}
+EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
+
+static int
+devlink_nl_health_reporter_fill(struct sk_buff *msg,
+ struct devlink_health_reporter *reporter,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags)
+{
+ struct devlink *devlink = reporter->devlink;
+ struct nlattr *reporter_attr;
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto genlmsg_cancel;
+
+ if (reporter->devlink_port) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
+ goto genlmsg_cancel;
+ }
+ reporter_attr = nla_nest_start_noflag(msg,
+ DEVLINK_ATTR_HEALTH_REPORTER);
+ if (!reporter_attr)
+ goto genlmsg_cancel;
+ if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
+ reporter->ops->name))
+ goto reporter_nest_cancel;
+ if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
+ reporter->health_state))
+ goto reporter_nest_cancel;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
+ reporter->error_count, DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
+ reporter->recovery_count, DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (reporter->ops->recover &&
+ nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
+ reporter->graceful_period,
+ DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (reporter->ops->recover &&
+ nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
+ reporter->auto_recover))
+ goto reporter_nest_cancel;
+ if (reporter->dump_fmsg &&
+ nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
+ jiffies_to_msecs(reporter->dump_ts),
+ DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (reporter->dump_fmsg &&
+ nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
+ reporter->dump_real_ts, DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (reporter->ops->dump &&
+ nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
+ reporter->auto_dump))
+ goto reporter_nest_cancel;
+
+ nla_nest_end(msg, reporter_attr);
+ genlmsg_end(msg, hdr);
+ return 0;
+
+reporter_nest_cancel:
+ nla_nest_end(msg, reporter_attr);
+genlmsg_cancel:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_recover_notify(struct devlink_health_reporter *reporter,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = reporter->devlink;
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+ WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_health_reporter_fill(msg, reporter, cmd, 0, 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+void
+devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
+{
+ reporter->recovery_count++;
+ reporter->last_recovery_ts = jiffies;
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
+
+static int
+devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
+ void *priv_ctx, struct netlink_ext_ack *extack)
+{
+ int err;
+
+ if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
+ return 0;
+
+ if (!reporter->ops->recover)
+ return -EOPNOTSUPP;
+
+ err = reporter->ops->recover(reporter, priv_ctx, extack);
+ if (err)
+ return err;
+
+ devlink_health_reporter_recovery_done(reporter);
+ reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
+ devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+
+ return 0;
+}
+
+static void
+devlink_health_dump_clear(struct devlink_health_reporter *reporter)
+{
+ if (!reporter->dump_fmsg)
+ return;
+ devlink_fmsg_free(reporter->dump_fmsg);
+ reporter->dump_fmsg = NULL;
+}
+
+static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
+ void *priv_ctx,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+
+ if (!reporter->ops->dump)
+ return 0;
+
+ if (reporter->dump_fmsg)
+ return 0;
+
+ reporter->dump_fmsg = devlink_fmsg_alloc();
+ if (!reporter->dump_fmsg) {
+ err = -ENOMEM;
+ return err;
+ }
+
+ err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
+ if (err)
+ goto dump_err;
+
+ err = reporter->ops->dump(reporter, reporter->dump_fmsg,
+ priv_ctx, extack);
+ if (err)
+ goto dump_err;
+
+ err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
+ if (err)
+ goto dump_err;
+
+ reporter->dump_ts = jiffies;
+ reporter->dump_real_ts = ktime_get_real_ns();
+
+ return 0;
+
+dump_err:
+ devlink_health_dump_clear(reporter);
+ return err;
+}
+
+int devlink_health_report(struct devlink_health_reporter *reporter,
+ const char *msg, void *priv_ctx)
+{
+ enum devlink_health_reporter_state prev_health_state;
+ struct devlink *devlink = reporter->devlink;
+ unsigned long recover_ts_threshold;
+ int ret;
+
+ /* write a log message of the current error */
+ WARN_ON(!msg);
+ trace_devlink_health_report(devlink, reporter->ops->name, msg);
+ reporter->error_count++;
+ prev_health_state = reporter->health_state;
+ reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
+ devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+
+ /* abort if the previous error wasn't recovered */
+ recover_ts_threshold = reporter->last_recovery_ts +
+ msecs_to_jiffies(reporter->graceful_period);
+ if (reporter->auto_recover &&
+ (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
+ (reporter->last_recovery_ts && reporter->recovery_count &&
+ time_is_after_jiffies(recover_ts_threshold)))) {
+ trace_devlink_health_recover_aborted(devlink,
+ reporter->ops->name,
+ reporter->health_state,
+ jiffies -
+ reporter->last_recovery_ts);
+ return -ECANCELED;
+ }
+
+ if (reporter->auto_dump) {
+ mutex_lock(&reporter->dump_lock);
+ /* store current dump of current error, for later analysis */
+ devlink_health_do_dump(reporter, priv_ctx, NULL);
+ mutex_unlock(&reporter->dump_lock);
+ }
+
+ if (!reporter->auto_recover)
+ return 0;
+
+ devl_lock(devlink);
+ ret = devlink_health_reporter_recover(reporter, priv_ctx, NULL);
+ devl_unlock(devlink);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(devlink_health_report);
+
+static struct devlink_health_reporter *
+devlink_health_reporter_get_from_attrs(struct devlink *devlink,
+ struct nlattr **attrs)
+{
+ struct devlink_health_reporter *reporter;
+ struct devlink_port *devlink_port;
+ char *reporter_name;
+
+ if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
+ return NULL;
+
+ reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
+ devlink_port = devlink_port_get_from_attrs(devlink, attrs);
+ if (IS_ERR(devlink_port)) {
+ mutex_lock(&devlink->reporters_lock);
+ reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
+ if (reporter)
+ refcount_inc(&reporter->refcount);
+ mutex_unlock(&devlink->reporters_lock);
+ } else {
+ mutex_lock(&devlink_port->reporters_lock);
+ reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
+ if (reporter)
+ refcount_inc(&reporter->refcount);
+ mutex_unlock(&devlink_port->reporters_lock);
+ }
+
+ return reporter;
+}
+
+static struct devlink_health_reporter *
+devlink_health_reporter_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
+}
+
+static struct devlink_health_reporter *
+devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
+{
+ const struct genl_dumpit_info *info = genl_dumpit_info(cb);
+ struct devlink_health_reporter *reporter;
+ struct nlattr **attrs = info->attrs;
+ struct devlink *devlink;
+
+ devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
+ if (IS_ERR(devlink))
+ return NULL;
+
+ reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
+ devlink_put(devlink);
+ return reporter;
+}
+
+void
+devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
+ enum devlink_health_reporter_state state)
+{
+ if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
+ state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
+ return;
+
+ if (reporter->health_state == state)
+ return;
+
+ reporter->health_state = state;
+ trace_devlink_health_reporter_state_update(reporter->devlink,
+ reporter->ops->name, state);
+ devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
+
+static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ struct sk_buff *msg;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ err = devlink_nl_health_reporter_fill(msg, reporter,
+ DEVLINK_CMD_HEALTH_REPORTER_GET,
+ info->snd_portid, info->snd_seq,
+ 0);
+ if (err) {
+ nlmsg_free(msg);
+ goto out;
+ }
+
+ err = genlmsg_reply(msg, info);
+out:
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int
+devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_health_reporter *reporter;
+ unsigned long index, port_index;
+ struct devlink_port *port;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ mutex_lock(&devlink->reporters_lock);
+ list_for_each_entry(reporter, &devlink->reporter_list,
+ list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_health_reporter_fill(
+ msg, reporter, DEVLINK_CMD_HEALTH_REPORTER_GET,
+ NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ mutex_unlock(&devlink->reporters_lock);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ mutex_unlock(&devlink->reporters_lock);
+ devlink_put(devlink);
+ }
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ xa_for_each(&devlink->ports, port_index, port) {
+ mutex_lock(&port->reporters_lock);
+ list_for_each_entry(reporter, &port->reporter_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_health_reporter_fill(
+ msg, reporter,
+ DEVLINK_CMD_HEALTH_REPORTER_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI);
+ if (err) {
+ mutex_unlock(&port->reporters_lock);
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ mutex_unlock(&port->reporters_lock);
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int
+devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->recover &&
+ (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
+ info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+ if (!reporter->ops->dump &&
+ info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
+ reporter->graceful_period =
+ nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
+
+ if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
+ reporter->auto_recover =
+ nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
+
+ if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
+ reporter->auto_dump =
+ nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
+
+ devlink_health_reporter_put(reporter);
+ return 0;
+out:
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ err = devlink_health_reporter_recover(reporter, NULL, info->extack);
+
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ struct devlink_fmsg *fmsg;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->diagnose) {
+ devlink_health_reporter_put(reporter);
+ return -EOPNOTSUPP;
+ }
+
+ fmsg = devlink_fmsg_alloc();
+ if (!fmsg) {
+ devlink_health_reporter_put(reporter);
+ return -ENOMEM;
+ }
+
+ err = devlink_fmsg_obj_nest_start(fmsg);
+ if (err)
+ goto out;
+
+ err = reporter->ops->diagnose(reporter, fmsg, info->extack);
+ if (err)
+ goto out;
+
+ err = devlink_fmsg_obj_nest_end(fmsg);
+ if (err)
+ goto out;
+
+ err = devlink_fmsg_snd(fmsg, info,
+ DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
+
+out:
+ devlink_fmsg_free(fmsg);
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int
+devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ struct devlink_health_reporter *reporter;
+ u64 start = cb->args[0];
+ int err;
+
+ reporter = devlink_health_reporter_get_from_cb(cb);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->dump) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+ mutex_lock(&reporter->dump_lock);
+ if (!start) {
+ err = devlink_health_do_dump(reporter, NULL, cb->extack);
+ if (err)
+ goto unlock;
+ cb->args[1] = reporter->dump_ts;
+ }
+ if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
+ NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
+ err = -EAGAIN;
+ goto unlock;
+ }
+
+ err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
+ DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
+unlock:
+ mutex_unlock(&reporter->dump_lock);
+out:
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int
+devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->dump) {
+ devlink_health_reporter_put(reporter);
+ return -EOPNOTSUPP;
+ }
+
+ mutex_lock(&reporter->dump_lock);
+ devlink_health_dump_clear(reporter);
+ mutex_unlock(&reporter->dump_lock);
+ devlink_health_reporter_put(reporter);
+ return 0;
+}
+
+static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->test) {
+ devlink_health_reporter_put(reporter);
+ return -EOPNOTSUPP;
+ }
+
+ err = reporter->ops->test(reporter, info->extack);
+
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+struct devlink_stats {
+ u64_stats_t rx_bytes;
+ u64_stats_t rx_packets;
+ struct u64_stats_sync syncp;
+};
+
+/**
+ * struct devlink_trap_policer_item - Packet trap policer attributes.
+ * @policer: Immutable packet trap policer attributes.
+ * @rate: Rate in packets / sec.
+ * @burst: Burst size in packets.
+ * @list: trap_policer_list member.
+ *
+ * Describes packet trap policer attributes. Created by devlink during trap
+ * policer registration.
+ */
+struct devlink_trap_policer_item {
+ const struct devlink_trap_policer *policer;
+ u64 rate;
+ u64 burst;
+ struct list_head list;
+};
+
+/**
+ * struct devlink_trap_group_item - Packet trap group attributes.
+ * @group: Immutable packet trap group attributes.
+ * @policer_item: Associated policer item. Can be NULL.
+ * @list: trap_group_list member.
+ * @stats: Trap group statistics.
+ *
+ * Describes packet trap group attributes. Created by devlink during trap
+ * group registration.
+ */
+struct devlink_trap_group_item {
+ const struct devlink_trap_group *group;
+ struct devlink_trap_policer_item *policer_item;
+ struct list_head list;
+ struct devlink_stats __percpu *stats;
+};
+
+/**
+ * struct devlink_trap_item - Packet trap attributes.
+ * @trap: Immutable packet trap attributes.
+ * @group_item: Associated group item.
+ * @list: trap_list member.
+ * @action: Trap action.
+ * @stats: Trap statistics.
+ * @priv: Driver private information.
+ *
+ * Describes both mutable and immutable packet trap attributes. Created by
+ * devlink during trap registration and used for all trap related operations.
+ */
+struct devlink_trap_item {
+ const struct devlink_trap *trap;
+ struct devlink_trap_group_item *group_item;
+ struct list_head list;
+ enum devlink_trap_action action;
+ struct devlink_stats __percpu *stats;
+ void *priv;
+};
+
+static struct devlink_trap_policer_item *
+devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
+{
+ struct devlink_trap_policer_item *policer_item;
+
+ list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
+ if (policer_item->policer->id == id)
+ return policer_item;
+ }
+
+ return NULL;
+}
+
+static struct devlink_trap_item *
+devlink_trap_item_lookup(struct devlink *devlink, const char *name)
+{
+ struct devlink_trap_item *trap_item;
+
+ list_for_each_entry(trap_item, &devlink->trap_list, list) {
+ if (!strcmp(trap_item->trap->name, name))
+ return trap_item;
+ }
+
+ return NULL;
+}
+
+static struct devlink_trap_item *
+devlink_trap_item_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ struct nlattr *attr;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
+ return NULL;
+ attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
+
+ return devlink_trap_item_lookup(devlink, nla_data(attr));
+}
+
+static int
+devlink_trap_action_get_from_info(struct genl_info *info,
+ enum devlink_trap_action *p_trap_action)
+{
+ u8 val;
+
+ val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
+ switch (val) {
+ case DEVLINK_TRAP_ACTION_DROP:
+ case DEVLINK_TRAP_ACTION_TRAP:
+ case DEVLINK_TRAP_ACTION_MIRROR:
+ *p_trap_action = val;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int devlink_trap_metadata_put(struct sk_buff *msg,
+ const struct devlink_trap *trap)
+{
+ struct nlattr *attr;
+
+ attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
+ if (!attr)
+ return -EMSGSIZE;
+
+ if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
+ nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
+ goto nla_put_failure;
+ if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
+ nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, attr);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, attr);
+ return -EMSGSIZE;
+}
+
+static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
+ struct devlink_stats *stats)
+{
+ int i;
+
+ memset(stats, 0, sizeof(*stats));
+ for_each_possible_cpu(i) {
+ struct devlink_stats *cpu_stats;
+ u64 rx_packets, rx_bytes;
+ unsigned int start;
+
+ cpu_stats = per_cpu_ptr(trap_stats, i);
+ do {
+ start = u64_stats_fetch_begin(&cpu_stats->syncp);
+ rx_packets = u64_stats_read(&cpu_stats->rx_packets);
+ rx_bytes = u64_stats_read(&cpu_stats->rx_bytes);
+ } while (u64_stats_fetch_retry(&cpu_stats->syncp, start));
+
+ u64_stats_add(&stats->rx_packets, rx_packets);
+ u64_stats_add(&stats->rx_bytes, rx_bytes);
+ }
+}
+
+static int
+devlink_trap_group_stats_put(struct sk_buff *msg,
+ struct devlink_stats __percpu *trap_stats)
+{
+ struct devlink_stats stats;
+ struct nlattr *attr;
+
+ devlink_trap_stats_read(trap_stats, &stats);
+
+ attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
+ if (!attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
+ u64_stats_read(&stats.rx_packets),
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
+ u64_stats_read(&stats.rx_bytes),
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, attr);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_trap_stats_put(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_item *trap_item)
+{
+ struct devlink_stats stats;
+ struct nlattr *attr;
+ u64 drops = 0;
+ int err;
+
+ if (devlink->ops->trap_drop_counter_get) {
+ err = devlink->ops->trap_drop_counter_get(devlink,
+ trap_item->trap,
+ &drops);
+ if (err)
+ return err;
+ }
+
+ devlink_trap_stats_read(trap_item->stats, &stats);
+
+ attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
+ if (!attr)
+ return -EMSGSIZE;
+
+ if (devlink->ops->trap_drop_counter_get &&
+ nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
+ u64_stats_read(&stats.rx_packets),
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
+ u64_stats_read(&stats.rx_bytes),
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, attr);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_item *trap_item,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags)
+{
+ struct devlink_trap_group_item *group_item = trap_item->group_item;
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
+ group_item->group->name))
+ goto nla_put_failure;
+
+ if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
+ goto nla_put_failure;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
+ goto nla_put_failure;
+
+ if (trap_item->trap->generic &&
+ nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
+ goto nla_put_failure;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
+ goto nla_put_failure;
+
+ err = devlink_trap_metadata_put(msg, trap_item->trap);
+ if (err)
+ goto nla_put_failure;
+
+ err = devlink_trap_stats_put(msg, devlink, trap_item);
+ if (err)
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_trap_item *trap_item;
+ struct sk_buff *msg;
+ int err;
+
+ if (list_empty(&devlink->trap_list))
+ return -EOPNOTSUPP;
+
+ trap_item = devlink_trap_item_get_from_info(devlink, info);
+ if (!trap_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
+ return -ENOENT;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_trap_fill(msg, devlink, trap_item,
+ DEVLINK_CMD_TRAP_NEW, info->snd_portid,
+ info->snd_seq, 0);
+ if (err)
+ goto err_trap_fill;
+
+ return genlmsg_reply(msg, info);
+
+err_trap_fill:
+ nlmsg_free(msg);
+ return err;
+}
+
+static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_trap_item *trap_item;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(trap_item, &devlink->trap_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_trap_fill(msg, devlink, trap_item,
+ DEVLINK_CMD_TRAP_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int __devlink_trap_action_set(struct devlink *devlink,
+ struct devlink_trap_item *trap_item,
+ enum devlink_trap_action trap_action,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+
+ if (trap_item->action != trap_action &&
+ trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
+ NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
+ return 0;
+ }
+
+ err = devlink->ops->trap_action_set(devlink, trap_item->trap,
+ trap_action, extack);
+ if (err)
+ return err;
+
+ trap_item->action = trap_action;
+
+ return 0;
+}
+
+static int devlink_trap_action_set(struct devlink *devlink,
+ struct devlink_trap_item *trap_item,
+ struct genl_info *info)
+{
+ enum devlink_trap_action trap_action;
+ int err;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
+ return 0;
+
+ err = devlink_trap_action_get_from_info(info, &trap_action);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
+ return -EINVAL;
+ }
+
+ return __devlink_trap_action_set(devlink, trap_item, trap_action,
+ info->extack);
+}
+
+static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_trap_item *trap_item;
+
+ if (list_empty(&devlink->trap_list))
+ return -EOPNOTSUPP;
+
+ trap_item = devlink_trap_item_get_from_info(devlink, info);
+ if (!trap_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
+ return -ENOENT;
+ }
+
+ return devlink_trap_action_set(devlink, trap_item, info);
+}
+
+static struct devlink_trap_group_item *
+devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
+{
+ struct devlink_trap_group_item *group_item;
+
+ list_for_each_entry(group_item, &devlink->trap_group_list, list) {
+ if (!strcmp(group_item->group->name, name))
+ return group_item;
+ }
+
+ return NULL;
+}
+
+static struct devlink_trap_group_item *
+devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
+{
+ struct devlink_trap_group_item *group_item;
+
+ list_for_each_entry(group_item, &devlink->trap_group_list, list) {
+ if (group_item->group->id == id)
+ return group_item;
+ }
+
+ return NULL;
+}
+
+static struct devlink_trap_group_item *
+devlink_trap_group_item_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ char *name;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
+ return NULL;
+ name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
+
+ return devlink_trap_group_item_lookup(devlink, name);
+}
+
+static int
+devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_group_item *group_item,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags)
+{
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
+ group_item->group->name))
+ goto nla_put_failure;
+
+ if (group_item->group->generic &&
+ nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
+ goto nla_put_failure;
+
+ if (group_item->policer_item &&
+ nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
+ group_item->policer_item->policer->id))
+ goto nla_put_failure;
+
+ err = devlink_trap_group_stats_put(msg, group_item->stats);
+ if (err)
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_trap_group_item *group_item;
+ struct sk_buff *msg;
+ int err;
+
+ if (list_empty(&devlink->trap_group_list))
+ return -EOPNOTSUPP;
+
+ group_item = devlink_trap_group_item_get_from_info(devlink, info);
+ if (!group_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
+ return -ENOENT;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_trap_group_fill(msg, devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err)
+ goto err_trap_group_fill;
+
+ return genlmsg_reply(msg, info);
+
+err_trap_group_fill:
+ nlmsg_free(msg);
+ return err;
+}
+
+static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
+ struct devlink_trap_group_item *group_item;
+ u32 portid = NETLINK_CB(cb->skb).portid;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(group_item, &devlink->trap_group_list,
+ list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_trap_group_fill(msg, devlink,
+ group_item, cmd,
+ portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int
+__devlink_trap_group_action_set(struct devlink *devlink,
+ struct devlink_trap_group_item *group_item,
+ enum devlink_trap_action trap_action,
+ struct netlink_ext_ack *extack)
+{
+ const char *group_name = group_item->group->name;
+ struct devlink_trap_item *trap_item;
+ int err;
+
+ if (devlink->ops->trap_group_action_set) {
+ err = devlink->ops->trap_group_action_set(devlink, group_item->group,
+ trap_action, extack);
+ if (err)
+ return err;
+
+ list_for_each_entry(trap_item, &devlink->trap_list, list) {
+ if (strcmp(trap_item->group_item->group->name, group_name))
+ continue;
+ if (trap_item->action != trap_action &&
+ trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
+ continue;
+ trap_item->action = trap_action;
+ }
+
+ return 0;
+ }
+
+ list_for_each_entry(trap_item, &devlink->trap_list, list) {
+ if (strcmp(trap_item->group_item->group->name, group_name))
+ continue;
+ err = __devlink_trap_action_set(devlink, trap_item,
+ trap_action, extack);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int
+devlink_trap_group_action_set(struct devlink *devlink,
+ struct devlink_trap_group_item *group_item,
+ struct genl_info *info, bool *p_modified)
+{
+ enum devlink_trap_action trap_action;
+ int err;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
+ return 0;
+
+ err = devlink_trap_action_get_from_info(info, &trap_action);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
+ return -EINVAL;
+ }
+
+ err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
+ info->extack);
+ if (err)
+ return err;
+
+ *p_modified = true;
+
+ return 0;
+}
+
+static int devlink_trap_group_set(struct devlink *devlink,
+ struct devlink_trap_group_item *group_item,
+ struct genl_info *info)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct netlink_ext_ack *extack = info->extack;
+ const struct devlink_trap_policer *policer;
+ struct nlattr **attrs = info->attrs;
+ int err;
+
+ if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
+ return 0;
+
+ if (!devlink->ops->trap_group_set)
+ return -EOPNOTSUPP;
+
+ policer_item = group_item->policer_item;
+ if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
+ u32 policer_id;
+
+ policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
+ policer_item = devlink_trap_policer_item_lookup(devlink,
+ policer_id);
+ if (policer_id && !policer_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
+ return -ENOENT;
+ }
+ }
+ policer = policer_item ? policer_item->policer : NULL;
+
+ err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
+ extack);
+ if (err)
+ return err;
+
+ group_item->policer_item = policer_item;
+
+ return 0;
+}
+
+static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_trap_group_item *group_item;
+ bool modified = false;
+ int err;
+
+ if (list_empty(&devlink->trap_group_list))
+ return -EOPNOTSUPP;
+
+ group_item = devlink_trap_group_item_get_from_info(devlink, info);
+ if (!group_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
+ return -ENOENT;
+ }
+
+ err = devlink_trap_group_action_set(devlink, group_item, info,
+ &modified);
+ if (err)
+ return err;
+
+ err = devlink_trap_group_set(devlink, group_item, info);
+ if (err)
+ goto err_trap_group_set;
+
+ return 0;
+
+err_trap_group_set:
+ if (modified)
+ NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
+ return err;
+}
+
+static struct devlink_trap_policer_item *
+devlink_trap_policer_item_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ u32 id;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
+ return NULL;
+ id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
+
+ return devlink_trap_policer_item_lookup(devlink, id);
+}
+
+static int
+devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_policer *policer)
+{
+ struct nlattr *attr;
+ u64 drops;
+ int err;
+
+ if (!devlink->ops->trap_policer_counter_get)
+ return 0;
+
+ err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
+ if (err)
+ return err;
+
+ attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
+ if (!attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, attr);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, attr);
+ return -EMSGSIZE;
+}
+
+static int
+devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_policer_item *policer_item,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags)
+{
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
+ policer_item->policer->id))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
+ policer_item->rate, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
+ policer_item->burst, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ err = devlink_trap_policer_stats_put(msg, devlink,
+ policer_item->policer);
+ if (err)
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct sk_buff *msg;
+ int err;
+
+ if (list_empty(&devlink->trap_policer_list))
+ return -EOPNOTSUPP;
+
+ policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
+ if (!policer_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
+ return -ENOENT;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err)
+ goto err_trap_policer_fill;
+
+ return genlmsg_reply(msg, info);
+
+err_trap_policer_fill:
+ nlmsg_free(msg);
+ return err;
+}
+
+static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
+ struct devlink_trap_policer_item *policer_item;
+ u32 portid = NETLINK_CB(cb->skb).portid;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(policer_item, &devlink->trap_policer_list,
+ list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_trap_policer_fill(msg, devlink,
+ policer_item, cmd,
+ portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int
+devlink_trap_policer_set(struct devlink *devlink,
+ struct devlink_trap_policer_item *policer_item,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct nlattr **attrs = info->attrs;
+ u64 rate, burst;
+ int err;
+
+ rate = policer_item->rate;
+ burst = policer_item->burst;
+
+ if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
+ rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
+
+ if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
+ burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
+
+ if (rate < policer_item->policer->min_rate) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
+ return -EINVAL;
+ }
+
+ if (rate > policer_item->policer->max_rate) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
+ return -EINVAL;
+ }
+
+ if (burst < policer_item->policer->min_burst) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
+ return -EINVAL;
+ }
+
+ if (burst > policer_item->policer->max_burst) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
+ return -EINVAL;
+ }
+
+ err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
+ rate, burst, info->extack);
+ if (err)
+ return err;
+
+ policer_item->rate = rate;
+ policer_item->burst = burst;
+
+ return 0;
+}
+
+static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+
+ if (list_empty(&devlink->trap_policer_list))
+ return -EOPNOTSUPP;
+
+ if (!devlink->ops->trap_policer_set)
+ return -EOPNOTSUPP;
+
+ policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
+ if (!policer_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
+ return -ENOENT;
+ }
+
+ return devlink_trap_policer_set(devlink, policer_item, info);
+}
+
+static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
+ [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
+ DEVLINK_ATTR_TRAP_POLICER_ID },
+ [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
+ DEVLINK_PORT_TYPE_IB),
+ [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
+ DEVLINK_ESWITCH_MODE_SWITCHDEV),
+ [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
+ [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
+ [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
+ NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
+ [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
+ [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
+ DEVLINK_RELOAD_ACTION_MAX),
+ [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
+ [DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_RATE_TYPE] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_RATE_TX_SHARE] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_RATE_TX_MAX] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_RATE_NODE_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_RATE_PARENT_NODE_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_LINECARD_INDEX] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_LINECARD_TYPE] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_SELFTESTS] = { .type = NLA_NESTED },
+ [DEVLINK_ATTR_RATE_TX_PRIORITY] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_RATE_TX_WEIGHT] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_REGION_DIRECT] = { .type = NLA_FLAG },
+};
+
+static const struct genl_small_ops devlink_nl_ops[] = {
+ {
+ .cmd = DEVLINK_CMD_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_get_doit,
+ .dumpit = devlink_nl_cmd_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_get_doit,
+ .dumpit = devlink_nl_cmd_port_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_RATE_GET,
+ .doit = devlink_nl_cmd_rate_get_doit,
+ .dumpit = devlink_nl_cmd_rate_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_RATE_SET,
+ .doit = devlink_nl_cmd_rate_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
+ },
+ {
+ .cmd = DEVLINK_CMD_RATE_NEW,
+ .doit = devlink_nl_cmd_rate_new_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_RATE_DEL,
+ .doit = devlink_nl_cmd_rate_del_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_RATE_NODE,
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_SPLIT,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_split_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_UNSPLIT,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_unsplit_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_NEW,
+ .doit = devlink_nl_cmd_port_new_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_DEL,
+ .doit = devlink_nl_cmd_port_del_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_LINECARD_GET,
+ .doit = devlink_nl_cmd_linecard_get_doit,
+ .dumpit = devlink_nl_cmd_linecard_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_LINECARD,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_LINECARD_SET,
+ .doit = devlink_nl_cmd_linecard_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_LINECARD,
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_get_doit,
+ .dumpit = devlink_nl_cmd_sb_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_POOL_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_pool_get_doit,
+ .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_POOL_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_pool_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_port_pool_get_doit,
+ .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_port_pool_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
+ .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_ESWITCH_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_eswitch_get_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_ESWITCH_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_eswitch_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_dpipe_table_get,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_dpipe_entries_get,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_dpipe_headers_get,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_dpipe_table_counters_set,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_RESOURCE_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_resource_set,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_RESOURCE_DUMP,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_resource_dump,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_RELOAD,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_reload,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_PARAM_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_param_get_doit,
+ .dumpit = devlink_nl_cmd_param_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_PARAM_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_param_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_PARAM_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_param_get_doit,
+ .dumpit = devlink_nl_cmd_port_param_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_PARAM_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_param_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_REGION_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_region_get_doit,
+ .dumpit = devlink_nl_cmd_region_get_dumpit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_REGION_NEW,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_region_new,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_REGION_DEL,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_region_del,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_REGION_READ,
+ .validate = GENL_DONT_VALIDATE_STRICT |
+ GENL_DONT_VALIDATE_DUMP_STRICT,
+ .dumpit = devlink_nl_cmd_region_read_dumpit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_INFO_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_info_get_doit,
+ .dumpit = devlink_nl_cmd_info_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_get_doit,
+ .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_recover_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT |
+ GENL_DONT_VALIDATE_DUMP_STRICT,
+ .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_test_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_FLASH_UPDATE,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_flash_update,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_GET,
+ .doit = devlink_nl_cmd_trap_get_doit,
+ .dumpit = devlink_nl_cmd_trap_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_SET,
+ .doit = devlink_nl_cmd_trap_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
+ .doit = devlink_nl_cmd_trap_group_get_doit,
+ .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
+ .doit = devlink_nl_cmd_trap_group_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
+ .doit = devlink_nl_cmd_trap_policer_get_doit,
+ .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
+ .doit = devlink_nl_cmd_trap_policer_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_SELFTESTS_GET,
+ .doit = devlink_nl_cmd_selftests_get_doit,
+ .dumpit = devlink_nl_cmd_selftests_get_dumpit
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_SELFTESTS_RUN,
+ .doit = devlink_nl_cmd_selftests_run,
+ .flags = GENL_ADMIN_PERM,
+ },
+};
+
+static struct genl_family devlink_nl_family __ro_after_init = {
+ .name = DEVLINK_GENL_NAME,
+ .version = DEVLINK_GENL_VERSION,
+ .maxattr = DEVLINK_ATTR_MAX,
+ .policy = devlink_nl_policy,
+ .netnsok = true,
+ .parallel_ops = true,
+ .pre_doit = devlink_nl_pre_doit,
+ .post_doit = devlink_nl_post_doit,
+ .module = THIS_MODULE,
+ .small_ops = devlink_nl_ops,
+ .n_small_ops = ARRAY_SIZE(devlink_nl_ops),
+ .resv_start_op = DEVLINK_CMD_SELFTESTS_RUN + 1,
+ .mcgrps = devlink_nl_mcgrps,
+ .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
+};
+
+static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
+{
+ const struct devlink_reload_combination *comb;
+ int i;
+
+ if (!devlink_reload_supported(ops)) {
+ if (WARN_ON(ops->reload_actions))
+ return false;
+ return true;
+ }
+
+ if (WARN_ON(!ops->reload_actions ||
+ ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
+ ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
+ return false;
+
+ if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
+ ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
+ return false;
+
+ for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
+ comb = &devlink_reload_invalid_combinations[i];
+ if (ops->reload_actions == BIT(comb->action) &&
+ ops->reload_limits == BIT(comb->limit))
+ return false;
+ }
+ return true;
+}
+
+/**
+ * devlink_set_features - Set devlink supported features
+ *
+ * @devlink: devlink
+ * @features: devlink support features
+ *
+ * This interface allows us to set reload ops separatelly from
+ * the devlink_alloc.
+ */
+void devlink_set_features(struct devlink *devlink, u64 features)
+{
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ WARN_ON(features & DEVLINK_F_RELOAD &&
+ !devlink_reload_supported(devlink->ops));
+ devlink->features = features;
+}
+EXPORT_SYMBOL_GPL(devlink_set_features);
+
+static int devlink_netdevice_event(struct notifier_block *nb,
+ unsigned long event, void *ptr);
+
+/**
+ * devlink_alloc_ns - Allocate new devlink instance resources
+ * in specific namespace
+ *
+ * @ops: ops
+ * @priv_size: size of user private data
+ * @net: net namespace
+ * @dev: parent device
+ *
+ * Allocate new devlink instance resources, including devlink index
+ * and name.
+ */
+struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
+ size_t priv_size, struct net *net,
+ struct device *dev)
+{
+ struct devlink *devlink;
+ static u32 last_id;
+ int ret;
+
+ WARN_ON(!ops || !dev);
+ if (!devlink_reload_actions_valid(ops))
+ return NULL;
+
+ devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
+ if (!devlink)
+ return NULL;
+
+ ret = xa_alloc_cyclic(&devlinks, &devlink->index, devlink, xa_limit_31b,
+ &last_id, GFP_KERNEL);
+ if (ret < 0)
+ goto err_xa_alloc;
+
+ devlink->netdevice_nb.notifier_call = devlink_netdevice_event;
+ ret = register_netdevice_notifier_net(net, &devlink->netdevice_nb);
+ if (ret)
+ goto err_register_netdevice_notifier;
+
+ devlink->dev = dev;
+ devlink->ops = ops;
+ xa_init_flags(&devlink->ports, XA_FLAGS_ALLOC);
+ xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
+ write_pnet(&devlink->_net, net);
+ INIT_LIST_HEAD(&devlink->rate_list);
+ INIT_LIST_HEAD(&devlink->linecard_list);
+ INIT_LIST_HEAD(&devlink->sb_list);
+ INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
+ INIT_LIST_HEAD(&devlink->resource_list);
+ INIT_LIST_HEAD(&devlink->param_list);
+ INIT_LIST_HEAD(&devlink->region_list);
+ INIT_LIST_HEAD(&devlink->reporter_list);
+ INIT_LIST_HEAD(&devlink->trap_list);
+ INIT_LIST_HEAD(&devlink->trap_group_list);
+ INIT_LIST_HEAD(&devlink->trap_policer_list);
+ lockdep_register_key(&devlink->lock_key);
+ mutex_init(&devlink->lock);
+ lockdep_set_class(&devlink->lock, &devlink->lock_key);
+ mutex_init(&devlink->reporters_lock);
+ mutex_init(&devlink->linecards_lock);
+ refcount_set(&devlink->refcount, 1);
+ init_completion(&devlink->comp);
+
+ return devlink;
+
+err_register_netdevice_notifier:
+ xa_erase(&devlinks, devlink->index);
+err_xa_alloc:
+ kfree(devlink);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(devlink_alloc_ns);
+
+static void
+devlink_trap_policer_notify(struct devlink *devlink,
+ const struct devlink_trap_policer_item *policer_item,
+ enum devlink_command cmd);
+static void
+devlink_trap_group_notify(struct devlink *devlink,
+ const struct devlink_trap_group_item *group_item,
+ enum devlink_command cmd);
+static void devlink_trap_notify(struct devlink *devlink,
+ const struct devlink_trap_item *trap_item,
+ enum devlink_command cmd);
+
+static void devlink_notify_register(struct devlink *devlink)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct devlink_trap_group_item *group_item;
+ struct devlink_param_item *param_item;
+ struct devlink_trap_item *trap_item;
+ struct devlink_port *devlink_port;
+ struct devlink_linecard *linecard;
+ struct devlink_rate *rate_node;
+ struct devlink_region *region;
+ unsigned long port_index;
+
+ devlink_notify(devlink, DEVLINK_CMD_NEW);
+ list_for_each_entry(linecard, &devlink->linecard_list, list)
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+
+ xa_for_each(&devlink->ports, port_index, devlink_port)
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+
+ list_for_each_entry(policer_item, &devlink->trap_policer_list, list)
+ devlink_trap_policer_notify(devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_NEW);
+
+ list_for_each_entry(group_item, &devlink->trap_group_list, list)
+ devlink_trap_group_notify(devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_NEW);
+
+ list_for_each_entry(trap_item, &devlink->trap_list, list)
+ devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
+
+ list_for_each_entry(rate_node, &devlink->rate_list, list)
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
+
+ list_for_each_entry(region, &devlink->region_list, list)
+ devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
+
+ list_for_each_entry(param_item, &devlink->param_list, list)
+ devlink_param_notify(devlink, 0, param_item,
+ DEVLINK_CMD_PARAM_NEW);
+}
+
+static void devlink_notify_unregister(struct devlink *devlink)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct devlink_trap_group_item *group_item;
+ struct devlink_param_item *param_item;
+ struct devlink_trap_item *trap_item;
+ struct devlink_port *devlink_port;
+ struct devlink_rate *rate_node;
+ struct devlink_region *region;
+ unsigned long port_index;
+
+ list_for_each_entry_reverse(param_item, &devlink->param_list, list)
+ devlink_param_notify(devlink, 0, param_item,
+ DEVLINK_CMD_PARAM_DEL);
+
+ list_for_each_entry_reverse(region, &devlink->region_list, list)
+ devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
+
+ list_for_each_entry_reverse(rate_node, &devlink->rate_list, list)
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
+
+ list_for_each_entry_reverse(trap_item, &devlink->trap_list, list)
+ devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
+
+ list_for_each_entry_reverse(group_item, &devlink->trap_group_list, list)
+ devlink_trap_group_notify(devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_DEL);
+ list_for_each_entry_reverse(policer_item, &devlink->trap_policer_list,
+ list)
+ devlink_trap_policer_notify(devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_DEL);
+
+ xa_for_each(&devlink->ports, port_index, devlink_port)
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
+ devlink_notify(devlink, DEVLINK_CMD_DEL);
+}
+
+/**
+ * devlink_register - Register devlink instance
+ *
+ * @devlink: devlink
+ */
+void devlink_register(struct devlink *devlink)
+{
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+ /* Make sure that we are in .probe() routine */
+
+ xa_set_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
+ devlink_notify_register(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_register);
+
+/**
+ * devlink_unregister - Unregister devlink instance
+ *
+ * @devlink: devlink
+ */
+void devlink_unregister(struct devlink *devlink)
+{
+ ASSERT_DEVLINK_REGISTERED(devlink);
+ /* Make sure that we are in .remove() routine */
+
+ xa_set_mark(&devlinks, devlink->index, DEVLINK_UNREGISTERING);
+ devlink_put(devlink);
+ wait_for_completion(&devlink->comp);
+
+ devlink_notify_unregister(devlink);
+ xa_clear_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
+ xa_clear_mark(&devlinks, devlink->index, DEVLINK_UNREGISTERING);
+}
+EXPORT_SYMBOL_GPL(devlink_unregister);
+
+/**
+ * devlink_free - Free devlink instance resources
+ *
+ * @devlink: devlink
+ */
+void devlink_free(struct devlink *devlink)
+{
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ mutex_destroy(&devlink->linecards_lock);
+ mutex_destroy(&devlink->reporters_lock);
+ mutex_destroy(&devlink->lock);
+ lockdep_unregister_key(&devlink->lock_key);
+ WARN_ON(!list_empty(&devlink->trap_policer_list));
+ WARN_ON(!list_empty(&devlink->trap_group_list));
+ WARN_ON(!list_empty(&devlink->trap_list));
+ WARN_ON(!list_empty(&devlink->reporter_list));
+ WARN_ON(!list_empty(&devlink->region_list));
+ WARN_ON(!list_empty(&devlink->param_list));
+ WARN_ON(!list_empty(&devlink->resource_list));
+ WARN_ON(!list_empty(&devlink->dpipe_table_list));
+ WARN_ON(!list_empty(&devlink->sb_list));
+ WARN_ON(!list_empty(&devlink->rate_list));
+ WARN_ON(!list_empty(&devlink->linecard_list));
+ WARN_ON(!xa_empty(&devlink->ports));
+
+ xa_destroy(&devlink->snapshot_ids);
+ xa_destroy(&devlink->ports);
+
+ WARN_ON_ONCE(unregister_netdevice_notifier_net(devlink_net(devlink),
+ &devlink->netdevice_nb));
+
+ xa_erase(&devlinks, devlink->index);
+
+ kfree(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_free);
+
+static void devlink_port_type_warn(struct work_struct *work)
+{
+ WARN(true, "Type was not set for devlink port.");
+}
+
+static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
+{
+ /* Ignore CPU and DSA flavours. */
+ return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
+ devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
+ devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
+}
+
+#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
+
+static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
+{
+ if (!devlink_port_type_should_warn(devlink_port))
+ return;
+ /* Schedule a work to WARN in case driver does not set port
+ * type within timeout.
+ */
+ schedule_delayed_work(&devlink_port->type_warn_dw,
+ DEVLINK_PORT_TYPE_WARN_TIMEOUT);
+}
+
+static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
+{
+ if (!devlink_port_type_should_warn(devlink_port))
+ return;
+ cancel_delayed_work_sync(&devlink_port->type_warn_dw);
+}
+
+/**
+ * devlink_port_init() - Init devlink port
+ *
+ * @devlink: devlink
+ * @devlink_port: devlink port
+ *
+ * Initialize essencial stuff that is needed for functions
+ * that may be called before devlink port registration.
+ * Call to this function is optional and not needed
+ * in case the driver does not use such functions.
+ */
+void devlink_port_init(struct devlink *devlink,
+ struct devlink_port *devlink_port)
+{
+ if (devlink_port->initialized)
+ return;
+ devlink_port->devlink = devlink;
+ INIT_LIST_HEAD(&devlink_port->region_list);
+ devlink_port->initialized = true;
+}
+EXPORT_SYMBOL_GPL(devlink_port_init);
+
+/**
+ * devlink_port_fini() - Deinitialize devlink port
+ *
+ * @devlink_port: devlink port
+ *
+ * Deinitialize essencial stuff that is in use for functions
+ * that may be called after devlink port unregistration.
+ * Call to this function is optional and not needed
+ * in case the driver does not use such functions.
+ */
+void devlink_port_fini(struct devlink_port *devlink_port)
+{
+ WARN_ON(!list_empty(&devlink_port->region_list));
+}
+EXPORT_SYMBOL_GPL(devlink_port_fini);
+
+/**
+ * devl_port_register() - Register devlink port
+ *
+ * @devlink: devlink
+ * @devlink_port: devlink port
+ * @port_index: driver-specific numerical identifier of the port
+ *
+ * Register devlink port with provided port index. User can use
+ * any indexing, even hw-related one. devlink_port structure
+ * is convenient to be embedded inside user driver private structure.
+ * Note that the caller should take care of zeroing the devlink_port
+ * structure.
+ */
+int devl_port_register(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index)
+{
+ int err;
+
+ devl_assert_locked(devlink);
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ devlink_port_init(devlink, devlink_port);
+ devlink_port->registered = true;
+ devlink_port->index = port_index;
+ spin_lock_init(&devlink_port->type_lock);
+ INIT_LIST_HEAD(&devlink_port->reporter_list);
+ mutex_init(&devlink_port->reporters_lock);
+ err = xa_insert(&devlink->ports, port_index, devlink_port, GFP_KERNEL);
+ if (err) {
+ mutex_destroy(&devlink_port->reporters_lock);
+ return err;
+ }
+
+ INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
+ devlink_port_type_warn_schedule(devlink_port);
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_port_register);
+
+/**
+ * devlink_port_register - Register devlink port
+ *
+ * @devlink: devlink
+ * @devlink_port: devlink port
+ * @port_index: driver-specific numerical identifier of the port
+ *
+ * Register devlink port with provided port index. User can use
+ * any indexing, even hw-related one. devlink_port structure
+ * is convenient to be embedded inside user driver private structure.
+ * Note that the caller should take care of zeroing the devlink_port
+ * structure.
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+int devlink_port_register(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index)
+{
+ int err;
+
+ devl_lock(devlink);
+ err = devl_port_register(devlink, devlink_port, port_index);
+ devl_unlock(devlink);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_port_register);
+
+/**
+ * devl_port_unregister() - Unregister devlink port
+ *
+ * @devlink_port: devlink port
+ */
+void devl_port_unregister(struct devlink_port *devlink_port)
+{
+ lockdep_assert_held(&devlink_port->devlink->lock);
+ WARN_ON(devlink_port->type != DEVLINK_PORT_TYPE_NOTSET);
+
+ devlink_port_type_warn_cancel(devlink_port);
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
+ xa_erase(&devlink_port->devlink->ports, devlink_port->index);
+ WARN_ON(!list_empty(&devlink_port->reporter_list));
+ mutex_destroy(&devlink_port->reporters_lock);
+ devlink_port->registered = false;
+}
+EXPORT_SYMBOL_GPL(devl_port_unregister);
+
+/**
+ * devlink_port_unregister - Unregister devlink port
+ *
+ * @devlink_port: devlink port
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_port_unregister(struct devlink_port *devlink_port)
+{
+ struct devlink *devlink = devlink_port->devlink;
+
+ devl_lock(devlink);
+ devl_port_unregister(devlink_port);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_port_unregister);
+
+static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
+ struct net_device *netdev)
+{
+ const struct net_device_ops *ops = netdev->netdev_ops;
+
+ /* If driver registers devlink port, it should set devlink port
+ * attributes accordingly so the compat functions are called
+ * and the original ops are not used.
+ */
+ if (ops->ndo_get_phys_port_name) {
+ /* Some drivers use the same set of ndos for netdevs
+ * that have devlink_port registered and also for
+ * those who don't. Make sure that ndo_get_phys_port_name
+ * returns -EOPNOTSUPP here in case it is defined.
+ * Warn if not.
+ */
+ char name[IFNAMSIZ];
+ int err;
+
+ err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
+ WARN_ON(err != -EOPNOTSUPP);
+ }
+ if (ops->ndo_get_port_parent_id) {
+ /* Some drivers use the same set of ndos for netdevs
+ * that have devlink_port registered and also for
+ * those who don't. Make sure that ndo_get_port_parent_id
+ * returns -EOPNOTSUPP here in case it is defined.
+ * Warn if not.
+ */
+ struct netdev_phys_item_id ppid;
+ int err;
+
+ err = ops->ndo_get_port_parent_id(netdev, &ppid);
+ WARN_ON(err != -EOPNOTSUPP);
+ }
+}
+
+static void __devlink_port_type_set(struct devlink_port *devlink_port,
+ enum devlink_port_type type,
+ void *type_dev)
+{
+ struct net_device *netdev = type_dev;
+
+ ASSERT_DEVLINK_PORT_REGISTERED(devlink_port);
+
+ if (type == DEVLINK_PORT_TYPE_NOTSET) {
+ devlink_port_type_warn_schedule(devlink_port);
+ } else {
+ devlink_port_type_warn_cancel(devlink_port);
+ if (type == DEVLINK_PORT_TYPE_ETH && netdev)
+ devlink_port_type_netdev_checks(devlink_port, netdev);
+ }
+
+ spin_lock_bh(&devlink_port->type_lock);
+ devlink_port->type = type;
+ switch (type) {
+ case DEVLINK_PORT_TYPE_ETH:
+ devlink_port->type_eth.netdev = netdev;
+ if (netdev) {
+ ASSERT_RTNL();
+ devlink_port->type_eth.ifindex = netdev->ifindex;
+ BUILD_BUG_ON(sizeof(devlink_port->type_eth.ifname) !=
+ sizeof(netdev->name));
+ strcpy(devlink_port->type_eth.ifname, netdev->name);
+ }
+ break;
+ case DEVLINK_PORT_TYPE_IB:
+ devlink_port->type_ib.ibdev = type_dev;
+ break;
+ default:
+ break;
+ }
+ spin_unlock_bh(&devlink_port->type_lock);
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+}
+
+/**
+ * devlink_port_type_eth_set - Set port type to Ethernet
+ *
+ * @devlink_port: devlink port
+ *
+ * If driver is calling this, most likely it is doing something wrong.
+ */
+void devlink_port_type_eth_set(struct devlink_port *devlink_port)
+{
+ dev_warn(devlink_port->devlink->dev,
+ "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
+ devlink_port->index);
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, NULL);
+}
+EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
+
+/**
+ * devlink_port_type_ib_set - Set port type to InfiniBand
+ *
+ * @devlink_port: devlink port
+ * @ibdev: related IB device
+ */
+void devlink_port_type_ib_set(struct devlink_port *devlink_port,
+ struct ib_device *ibdev)
+{
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
+}
+EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
+
+/**
+ * devlink_port_type_clear - Clear port type
+ *
+ * @devlink_port: devlink port
+ *
+ * If driver is calling this for clearing Ethernet type, most likely
+ * it is doing something wrong.
+ */
+void devlink_port_type_clear(struct devlink_port *devlink_port)
+{
+ if (devlink_port->type == DEVLINK_PORT_TYPE_ETH)
+ dev_warn(devlink_port->devlink->dev,
+ "devlink port type for port %d cleared without a software interface reference, device type not supported by the kernel?\n",
+ devlink_port->index);
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
+}
+EXPORT_SYMBOL_GPL(devlink_port_type_clear);
+
+static int devlink_netdevice_event(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
+ struct devlink_port *devlink_port = netdev->devlink_port;
+ struct devlink *devlink;
+
+ devlink = container_of(nb, struct devlink, netdevice_nb);
+
+ if (!devlink_port || devlink_port->devlink != devlink)
+ return NOTIFY_OK;
+
+ switch (event) {
+ case NETDEV_POST_INIT:
+ /* Set the type but not netdev pointer. It is going to be set
+ * later on by NETDEV_REGISTER event. Happens once during
+ * netdevice register
+ */
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH,
+ NULL);
+ break;
+ case NETDEV_REGISTER:
+ case NETDEV_CHANGENAME:
+ /* Set the netdev on top of previously set type. Note this
+ * event happens also during net namespace change so here
+ * we take into account netdev pointer appearing in this
+ * namespace.
+ */
+ __devlink_port_type_set(devlink_port, devlink_port->type,
+ netdev);
+ break;
+ case NETDEV_UNREGISTER:
+ /* Clear netdev pointer, but not the type. This event happens
+ * also during net namespace change so we need to clear
+ * pointer to netdev that is going to another net namespace.
+ */
+ __devlink_port_type_set(devlink_port, devlink_port->type,
+ NULL);
+ break;
+ case NETDEV_PRE_UNINIT:
+ /* Clear the type and the netdev pointer. Happens one during
+ * netdevice unregister.
+ */
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET,
+ NULL);
+ break;
+ }
+
+ return NOTIFY_OK;
+}
+
+static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
+ enum devlink_port_flavour flavour)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+
+ devlink_port->attrs_set = true;
+ attrs->flavour = flavour;
+ if (attrs->switch_id.id_len) {
+ devlink_port->switch_port = true;
+ if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
+ attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
+ } else {
+ devlink_port->switch_port = false;
+ }
+ return 0;
+}
+
+/**
+ * devlink_port_attrs_set - Set port attributes
+ *
+ * @devlink_port: devlink port
+ * @attrs: devlink port attrs
+ */
+void devlink_port_attrs_set(struct devlink_port *devlink_port,
+ struct devlink_port_attrs *attrs)
+{
+ int ret;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ devlink_port->attrs = *attrs;
+ ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
+ if (ret)
+ return;
+ WARN_ON(attrs->splittable && attrs->split);
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
+
+/**
+ * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
+ *
+ * @devlink_port: devlink port
+ * @controller: associated controller number for the devlink port instance
+ * @pf: associated PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
+ */
+void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
+ u16 pf, bool external)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int ret;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ ret = __devlink_port_attrs_set(devlink_port,
+ DEVLINK_PORT_FLAVOUR_PCI_PF);
+ if (ret)
+ return;
+ attrs->pci_pf.controller = controller;
+ attrs->pci_pf.pf = pf;
+ attrs->pci_pf.external = external;
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
+
+/**
+ * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
+ *
+ * @devlink_port: devlink port
+ * @controller: associated controller number for the devlink port instance
+ * @pf: associated PF for the devlink port instance
+ * @vf: associated VF of a PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
+ */
+void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
+ u16 pf, u16 vf, bool external)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int ret;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ ret = __devlink_port_attrs_set(devlink_port,
+ DEVLINK_PORT_FLAVOUR_PCI_VF);
+ if (ret)
+ return;
+ attrs->pci_vf.controller = controller;
+ attrs->pci_vf.pf = pf;
+ attrs->pci_vf.vf = vf;
+ attrs->pci_vf.external = external;
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
+
+/**
+ * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
+ *
+ * @devlink_port: devlink port
+ * @controller: associated controller number for the devlink port instance
+ * @pf: associated PF for the devlink port instance
+ * @sf: associated SF of a PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
+ */
+void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
+ u16 pf, u32 sf, bool external)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int ret;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ ret = __devlink_port_attrs_set(devlink_port,
+ DEVLINK_PORT_FLAVOUR_PCI_SF);
+ if (ret)
+ return;
+ attrs->pci_sf.controller = controller;
+ attrs->pci_sf.pf = pf;
+ attrs->pci_sf.sf = sf;
+ attrs->pci_sf.external = external;
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
+
+/**
+ * devl_rate_node_create - create devlink rate node
+ * @devlink: devlink instance
+ * @priv: driver private data
+ * @node_name: name of the resulting node
+ * @parent: parent devlink_rate struct
+ *
+ * Create devlink rate object of type node
+ */
+struct devlink_rate *
+devl_rate_node_create(struct devlink *devlink, void *priv, char *node_name,
+ struct devlink_rate *parent)
+{
+ struct devlink_rate *rate_node;
+
+ rate_node = devlink_rate_node_get_by_name(devlink, node_name);
+ if (!IS_ERR(rate_node))
+ return ERR_PTR(-EEXIST);
+
+ rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
+ if (!rate_node)
+ return ERR_PTR(-ENOMEM);
+
+ if (parent) {
+ rate_node->parent = parent;
+ refcount_inc(&rate_node->parent->refcnt);
+ }
+
+ rate_node->type = DEVLINK_RATE_TYPE_NODE;
+ rate_node->devlink = devlink;
+ rate_node->priv = priv;
+
+ rate_node->name = kstrdup(node_name, GFP_KERNEL);
+ if (!rate_node->name) {
+ kfree(rate_node);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ refcount_set(&rate_node->refcnt, 1);
+ list_add(&rate_node->list, &devlink->rate_list);
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
+ return rate_node;
+}
+EXPORT_SYMBOL_GPL(devl_rate_node_create);
+
+/**
+ * devl_rate_leaf_create - create devlink rate leaf
+ * @devlink_port: devlink port object to create rate object on
+ * @priv: driver private data
+ * @parent: parent devlink_rate struct
+ *
+ * Create devlink rate object of type leaf on provided @devlink_port.
+ */
+int devl_rate_leaf_create(struct devlink_port *devlink_port, void *priv,
+ struct devlink_rate *parent)
+{
+ struct devlink *devlink = devlink_port->devlink;
+ struct devlink_rate *devlink_rate;
+
+ devl_assert_locked(devlink_port->devlink);
+
+ if (WARN_ON(devlink_port->devlink_rate))
+ return -EBUSY;
+
+ devlink_rate = kzalloc(sizeof(*devlink_rate), GFP_KERNEL);
+ if (!devlink_rate)
+ return -ENOMEM;
+
+ if (parent) {
+ devlink_rate->parent = parent;
+ refcount_inc(&devlink_rate->parent->refcnt);
+ }
+
+ devlink_rate->type = DEVLINK_RATE_TYPE_LEAF;
+ devlink_rate->devlink = devlink;
+ devlink_rate->devlink_port = devlink_port;
+ devlink_rate->priv = priv;
+ list_add_tail(&devlink_rate->list, &devlink->rate_list);
+ devlink_port->devlink_rate = devlink_rate;
+ devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_rate_leaf_create);
+
+/**
+ * devl_rate_leaf_destroy - destroy devlink rate leaf
+ *
+ * @devlink_port: devlink port linked to the rate object
+ *
+ * Destroy the devlink rate object of type leaf on provided @devlink_port.
+ */
+void devl_rate_leaf_destroy(struct devlink_port *devlink_port)
+{
+ struct devlink_rate *devlink_rate = devlink_port->devlink_rate;
+
+ devl_assert_locked(devlink_port->devlink);
+ if (!devlink_rate)
+ return;
+
+ devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_DEL);
+ if (devlink_rate->parent)
+ refcount_dec(&devlink_rate->parent->refcnt);
+ list_del(&devlink_rate->list);
+ devlink_port->devlink_rate = NULL;
+ kfree(devlink_rate);
+}
+EXPORT_SYMBOL_GPL(devl_rate_leaf_destroy);
+
+/**
+ * devl_rate_nodes_destroy - destroy all devlink rate nodes on device
+ * @devlink: devlink instance
+ *
+ * Unset parent for all rate objects and destroy all rate nodes
+ * on specified device.
+ */
+void devl_rate_nodes_destroy(struct devlink *devlink)
+{
+ static struct devlink_rate *devlink_rate, *tmp;
+ const struct devlink_ops *ops = devlink->ops;
+
+ devl_assert_locked(devlink);
+
+ list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
+ if (!devlink_rate->parent)
+ continue;
+
+ refcount_dec(&devlink_rate->parent->refcnt);
+ if (devlink_rate_is_leaf(devlink_rate))
+ ops->rate_leaf_parent_set(devlink_rate, NULL, devlink_rate->priv,
+ NULL, NULL);
+ else if (devlink_rate_is_node(devlink_rate))
+ ops->rate_node_parent_set(devlink_rate, NULL, devlink_rate->priv,
+ NULL, NULL);
+ }
+ list_for_each_entry_safe(devlink_rate, tmp, &devlink->rate_list, list) {
+ if (devlink_rate_is_node(devlink_rate)) {
+ ops->rate_node_del(devlink_rate, devlink_rate->priv, NULL);
+ list_del(&devlink_rate->list);
+ kfree(devlink_rate->name);
+ kfree(devlink_rate);
+ }
+ }
+}
+EXPORT_SYMBOL_GPL(devl_rate_nodes_destroy);
+
+/**
+ * devlink_port_linecard_set - Link port with a linecard
+ *
+ * @devlink_port: devlink port
+ * @linecard: devlink linecard
+ */
+void devlink_port_linecard_set(struct devlink_port *devlink_port,
+ struct devlink_linecard *linecard)
+{
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ devlink_port->linecard = linecard;
+}
+EXPORT_SYMBOL_GPL(devlink_port_linecard_set);
+
+static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
+ char *name, size_t len)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int n = 0;
+
+ if (!devlink_port->attrs_set)
+ return -EOPNOTSUPP;
+
+ switch (attrs->flavour) {
+ case DEVLINK_PORT_FLAVOUR_PHYSICAL:
+ if (devlink_port->linecard)
+ n = snprintf(name, len, "l%u",
+ devlink_port->linecard->index);
+ if (n < len)
+ n += snprintf(name + n, len - n, "p%u",
+ attrs->phys.port_number);
+ if (n < len && attrs->split)
+ n += snprintf(name + n, len - n, "s%u",
+ attrs->phys.split_subport_number);
+ break;
+ case DEVLINK_PORT_FLAVOUR_CPU:
+ case DEVLINK_PORT_FLAVOUR_DSA:
+ case DEVLINK_PORT_FLAVOUR_UNUSED:
+ /* As CPU and DSA ports do not have a netdevice associated
+ * case should not ever happen.
+ */
+ WARN_ON(1);
+ return -EINVAL;
+ case DEVLINK_PORT_FLAVOUR_PCI_PF:
+ if (attrs->pci_pf.external) {
+ n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
+ if (n >= len)
+ return -EINVAL;
+ len -= n;
+ name += n;
+ }
+ n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_VF:
+ if (attrs->pci_vf.external) {
+ n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
+ if (n >= len)
+ return -EINVAL;
+ len -= n;
+ name += n;
+ }
+ n = snprintf(name, len, "pf%uvf%u",
+ attrs->pci_vf.pf, attrs->pci_vf.vf);
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_SF:
+ if (attrs->pci_sf.external) {
+ n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
+ if (n >= len)
+ return -EINVAL;
+ len -= n;
+ name += n;
+ }
+ n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
+ attrs->pci_sf.sf);
+ break;
+ case DEVLINK_PORT_FLAVOUR_VIRTUAL:
+ return -EOPNOTSUPP;
+ }
+
+ if (n >= len)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int devlink_linecard_types_init(struct devlink_linecard *linecard)
+{
+ struct devlink_linecard_type *linecard_type;
+ unsigned int count;
+ int i;
+
+ count = linecard->ops->types_count(linecard, linecard->priv);
+ linecard->types = kmalloc_array(count, sizeof(*linecard_type),
+ GFP_KERNEL);
+ if (!linecard->types)
+ return -ENOMEM;
+ linecard->types_count = count;
+
+ for (i = 0; i < count; i++) {
+ linecard_type = &linecard->types[i];
+ linecard->ops->types_get(linecard, linecard->priv, i,
+ &linecard_type->type,
+ &linecard_type->priv);
+ }
+ return 0;
+}
+
+static void devlink_linecard_types_fini(struct devlink_linecard *linecard)
+{
+ kfree(linecard->types);
+}
+
+/**
+ * devlink_linecard_create - Create devlink linecard
+ *
+ * @devlink: devlink
+ * @linecard_index: driver-specific numerical identifier of the linecard
+ * @ops: linecards ops
+ * @priv: user priv pointer
+ *
+ * Create devlink linecard instance with provided linecard index.
+ * Caller can use any indexing, even hw-related one.
+ *
+ * Return: Line card structure or an ERR_PTR() encoded error code.
+ */
+struct devlink_linecard *
+devlink_linecard_create(struct devlink *devlink, unsigned int linecard_index,
+ const struct devlink_linecard_ops *ops, void *priv)
+{
+ struct devlink_linecard *linecard;
+ int err;
+
+ if (WARN_ON(!ops || !ops->provision || !ops->unprovision ||
+ !ops->types_count || !ops->types_get))
+ return ERR_PTR(-EINVAL);
+
+ mutex_lock(&devlink->linecards_lock);
+ if (devlink_linecard_index_exists(devlink, linecard_index)) {
+ mutex_unlock(&devlink->linecards_lock);
+ return ERR_PTR(-EEXIST);
+ }
+
+ linecard = kzalloc(sizeof(*linecard), GFP_KERNEL);
+ if (!linecard) {
+ mutex_unlock(&devlink->linecards_lock);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ linecard->devlink = devlink;
+ linecard->index = linecard_index;
+ linecard->ops = ops;
+ linecard->priv = priv;
+ linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
+ mutex_init(&linecard->state_lock);
+
+ err = devlink_linecard_types_init(linecard);
+ if (err) {
+ mutex_destroy(&linecard->state_lock);
+ kfree(linecard);
+ mutex_unlock(&devlink->linecards_lock);
+ return ERR_PTR(err);
+ }
+
+ list_add_tail(&linecard->list, &devlink->linecard_list);
+ refcount_set(&linecard->refcount, 1);
+ mutex_unlock(&devlink->linecards_lock);
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ return linecard;
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_create);
+
+/**
+ * devlink_linecard_destroy - Destroy devlink linecard
+ *
+ * @linecard: devlink linecard
+ */
+void devlink_linecard_destroy(struct devlink_linecard *linecard)
+{
+ struct devlink *devlink = linecard->devlink;
+
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_DEL);
+ mutex_lock(&devlink->linecards_lock);
+ list_del(&linecard->list);
+ devlink_linecard_types_fini(linecard);
+ mutex_unlock(&devlink->linecards_lock);
+ devlink_linecard_put(linecard);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_destroy);
+
+/**
+ * devlink_linecard_provision_set - Set provisioning on linecard
+ *
+ * @linecard: devlink linecard
+ * @type: linecard type
+ *
+ * This is either called directly from the provision() op call or
+ * as a result of the provision() op call asynchronously.
+ */
+void devlink_linecard_provision_set(struct devlink_linecard *linecard,
+ const char *type)
+{
+ mutex_lock(&linecard->state_lock);
+ WARN_ON(linecard->type && strcmp(linecard->type, type));
+ linecard->state = DEVLINK_LINECARD_STATE_PROVISIONED;
+ linecard->type = type;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_provision_set);
+
+/**
+ * devlink_linecard_provision_clear - Clear provisioning on linecard
+ *
+ * @linecard: devlink linecard
+ *
+ * This is either called directly from the unprovision() op call or
+ * as a result of the unprovision() op call asynchronously.
+ */
+void devlink_linecard_provision_clear(struct devlink_linecard *linecard)
+{
+ mutex_lock(&linecard->state_lock);
+ WARN_ON(linecard->nested_devlink);
+ linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
+ linecard->type = NULL;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_provision_clear);
+
+/**
+ * devlink_linecard_provision_fail - Fail provisioning on linecard
+ *
+ * @linecard: devlink linecard
+ *
+ * This is either called directly from the provision() op call or
+ * as a result of the provision() op call asynchronously.
+ */
+void devlink_linecard_provision_fail(struct devlink_linecard *linecard)
+{
+ mutex_lock(&linecard->state_lock);
+ WARN_ON(linecard->nested_devlink);
+ linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING_FAILED;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_provision_fail);
+
+/**
+ * devlink_linecard_activate - Set linecard active
+ *
+ * @linecard: devlink linecard
+ */
+void devlink_linecard_activate(struct devlink_linecard *linecard)
+{
+ mutex_lock(&linecard->state_lock);
+ WARN_ON(linecard->state != DEVLINK_LINECARD_STATE_PROVISIONED);
+ linecard->state = DEVLINK_LINECARD_STATE_ACTIVE;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_activate);
+
+/**
+ * devlink_linecard_deactivate - Set linecard inactive
+ *
+ * @linecard: devlink linecard
+ */
+void devlink_linecard_deactivate(struct devlink_linecard *linecard)
+{
+ mutex_lock(&linecard->state_lock);
+ switch (linecard->state) {
+ case DEVLINK_LINECARD_STATE_ACTIVE:
+ linecard->state = DEVLINK_LINECARD_STATE_PROVISIONED;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ break;
+ case DEVLINK_LINECARD_STATE_UNPROVISIONING:
+ /* Line card is being deactivated as part
+ * of unprovisioning flow.
+ */
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
+ mutex_unlock(&linecard->state_lock);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_deactivate);
+
+/**
+ * devlink_linecard_nested_dl_set - Attach/detach nested devlink
+ * instance to linecard.
+ *
+ * @linecard: devlink linecard
+ * @nested_devlink: devlink instance to attach or NULL to detach
+ */
+void devlink_linecard_nested_dl_set(struct devlink_linecard *linecard,
+ struct devlink *nested_devlink)
+{
+ mutex_lock(&linecard->state_lock);
+ linecard->nested_devlink = nested_devlink;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_nested_dl_set);
+
+int devl_sb_register(struct devlink *devlink, unsigned int sb_index,
+ u32 size, u16 ingress_pools_count,
+ u16 egress_pools_count, u16 ingress_tc_count,
+ u16 egress_tc_count)
+{
+ struct devlink_sb *devlink_sb;
+
+ lockdep_assert_held(&devlink->lock);
+
+ if (devlink_sb_index_exists(devlink, sb_index))
+ return -EEXIST;
+
+ devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
+ if (!devlink_sb)
+ return -ENOMEM;
+ devlink_sb->index = sb_index;
+ devlink_sb->size = size;
+ devlink_sb->ingress_pools_count = ingress_pools_count;
+ devlink_sb->egress_pools_count = egress_pools_count;
+ devlink_sb->ingress_tc_count = ingress_tc_count;
+ devlink_sb->egress_tc_count = egress_tc_count;
+ list_add_tail(&devlink_sb->list, &devlink->sb_list);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_sb_register);
+
+int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
+ u32 size, u16 ingress_pools_count,
+ u16 egress_pools_count, u16 ingress_tc_count,
+ u16 egress_tc_count)
+{
+ int err;
+
+ devl_lock(devlink);
+ err = devl_sb_register(devlink, sb_index, size, ingress_pools_count,
+ egress_pools_count, ingress_tc_count,
+ egress_tc_count);
+ devl_unlock(devlink);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_sb_register);
+
+void devl_sb_unregister(struct devlink *devlink, unsigned int sb_index)
+{
+ struct devlink_sb *devlink_sb;
+
+ lockdep_assert_held(&devlink->lock);
+
+ devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
+ WARN_ON(!devlink_sb);
+ list_del(&devlink_sb->list);
+ kfree(devlink_sb);
+}
+EXPORT_SYMBOL_GPL(devl_sb_unregister);
+
+void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
+{
+ devl_lock(devlink);
+ devl_sb_unregister(devlink, sb_index);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_sb_unregister);
+
+/**
+ * devl_dpipe_headers_register - register dpipe headers
+ *
+ * @devlink: devlink
+ * @dpipe_headers: dpipe header array
+ *
+ * Register the headers supported by hardware.
+ */
+void devl_dpipe_headers_register(struct devlink *devlink,
+ struct devlink_dpipe_headers *dpipe_headers)
+{
+ lockdep_assert_held(&devlink->lock);
+
+ devlink->dpipe_headers = dpipe_headers;
+}
+EXPORT_SYMBOL_GPL(devl_dpipe_headers_register);
+
+/**
+ * devl_dpipe_headers_unregister - unregister dpipe headers
+ *
+ * @devlink: devlink
+ *
+ * Unregister the headers supported by hardware.
+ */
+void devl_dpipe_headers_unregister(struct devlink *devlink)
+{
+ lockdep_assert_held(&devlink->lock);
+
+ devlink->dpipe_headers = NULL;
+}
+EXPORT_SYMBOL_GPL(devl_dpipe_headers_unregister);
+
+/**
+ * devlink_dpipe_table_counter_enabled - check if counter allocation
+ * required
+ * @devlink: devlink
+ * @table_name: tables name
+ *
+ * Used by driver to check if counter allocation is required.
+ * After counter allocation is turned on the table entries
+ * are updated to include counter statistics.
+ *
+ * After that point on the driver must respect the counter
+ * state so that each entry added to the table is added
+ * with a counter.
+ */
+bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
+ const char *table_name)
+{
+ struct devlink_dpipe_table *table;
+ bool enabled;
+
+ rcu_read_lock();
+ table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
+ table_name, devlink);
+ enabled = false;
+ if (table)
+ enabled = table->counters_enabled;
+ rcu_read_unlock();
+ return enabled;
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
+
+/**
+ * devl_dpipe_table_register - register dpipe table
+ *
+ * @devlink: devlink
+ * @table_name: table name
+ * @table_ops: table ops
+ * @priv: priv
+ * @counter_control_extern: external control for counters
+ */
+int devl_dpipe_table_register(struct devlink *devlink,
+ const char *table_name,
+ struct devlink_dpipe_table_ops *table_ops,
+ void *priv, bool counter_control_extern)
+{
+ struct devlink_dpipe_table *table;
+
+ lockdep_assert_held(&devlink->lock);
+
+ if (WARN_ON(!table_ops->size_get))
+ return -EINVAL;
+
+ if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
+ devlink))
+ return -EEXIST;
+
+ table = kzalloc(sizeof(*table), GFP_KERNEL);
+ if (!table)
+ return -ENOMEM;
+
+ table->name = table_name;
+ table->table_ops = table_ops;
+ table->priv = priv;
+ table->counter_control_extern = counter_control_extern;
+
+ list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_dpipe_table_register);
+
+/**
+ * devl_dpipe_table_unregister - unregister dpipe table
+ *
+ * @devlink: devlink
+ * @table_name: table name
+ */
+void devl_dpipe_table_unregister(struct devlink *devlink,
+ const char *table_name)
+{
+ struct devlink_dpipe_table *table;
+
+ lockdep_assert_held(&devlink->lock);
+
+ table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
+ table_name, devlink);
+ if (!table)
+ return;
+ list_del_rcu(&table->list);
+ kfree_rcu(table, rcu);
+}
+EXPORT_SYMBOL_GPL(devl_dpipe_table_unregister);
+
+/**
+ * devl_resource_register - devlink resource register
+ *
+ * @devlink: devlink
+ * @resource_name: resource's name
+ * @resource_size: resource's size
+ * @resource_id: resource's id
+ * @parent_resource_id: resource's parent id
+ * @size_params: size parameters
+ *
+ * Generic resources should reuse the same names across drivers.
+ * Please see the generic resources list at:
+ * Documentation/networking/devlink/devlink-resource.rst
+ */
+int devl_resource_register(struct devlink *devlink,
+ const char *resource_name,
+ u64 resource_size,
+ u64 resource_id,
+ u64 parent_resource_id,
+ const struct devlink_resource_size_params *size_params)
+{
+ struct devlink_resource *resource;
+ struct list_head *resource_list;
+ bool top_hierarchy;
+
+ lockdep_assert_held(&devlink->lock);
+
+ top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
+
+ resource = devlink_resource_find(devlink, NULL, resource_id);
+ if (resource)
+ return -EINVAL;
+
+ resource = kzalloc(sizeof(*resource), GFP_KERNEL);
+ if (!resource)
+ return -ENOMEM;
+
+ if (top_hierarchy) {
+ resource_list = &devlink->resource_list;
+ } else {
+ struct devlink_resource *parent_resource;
+
+ parent_resource = devlink_resource_find(devlink, NULL,
+ parent_resource_id);
+ if (parent_resource) {
+ resource_list = &parent_resource->resource_list;
+ resource->parent = parent_resource;
+ } else {
+ kfree(resource);
+ return -EINVAL;
+ }
+ }
+
+ resource->name = resource_name;
+ resource->size = resource_size;
+ resource->size_new = resource_size;
+ resource->id = resource_id;
+ resource->size_valid = true;
+ memcpy(&resource->size_params, size_params,
+ sizeof(resource->size_params));
+ INIT_LIST_HEAD(&resource->resource_list);
+ list_add_tail(&resource->list, resource_list);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_resource_register);
+
+/**
+ * devlink_resource_register - devlink resource register
+ *
+ * @devlink: devlink
+ * @resource_name: resource's name
+ * @resource_size: resource's size
+ * @resource_id: resource's id
+ * @parent_resource_id: resource's parent id
+ * @size_params: size parameters
+ *
+ * Generic resources should reuse the same names across drivers.
+ * Please see the generic resources list at:
+ * Documentation/networking/devlink/devlink-resource.rst
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+int devlink_resource_register(struct devlink *devlink,
+ const char *resource_name,
+ u64 resource_size,
+ u64 resource_id,
+ u64 parent_resource_id,
+ const struct devlink_resource_size_params *size_params)
+{
+ int err;
+
+ devl_lock(devlink);
+ err = devl_resource_register(devlink, resource_name, resource_size,
+ resource_id, parent_resource_id, size_params);
+ devl_unlock(devlink);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_resource_register);
+
+static void devlink_resource_unregister(struct devlink *devlink,
+ struct devlink_resource *resource)
+{
+ struct devlink_resource *tmp, *child_resource;
+
+ list_for_each_entry_safe(child_resource, tmp, &resource->resource_list,
+ list) {
+ devlink_resource_unregister(devlink, child_resource);
+ list_del(&child_resource->list);
+ kfree(child_resource);
+ }
+}
+
+/**
+ * devl_resources_unregister - free all resources
+ *
+ * @devlink: devlink
+ */
+void devl_resources_unregister(struct devlink *devlink)
+{
+ struct devlink_resource *tmp, *child_resource;
+
+ lockdep_assert_held(&devlink->lock);
+
+ list_for_each_entry_safe(child_resource, tmp, &devlink->resource_list,
+ list) {
+ devlink_resource_unregister(devlink, child_resource);
+ list_del(&child_resource->list);
+ kfree(child_resource);
+ }
+}
+EXPORT_SYMBOL_GPL(devl_resources_unregister);
+
+/**
+ * devlink_resources_unregister - free all resources
+ *
+ * @devlink: devlink
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_resources_unregister(struct devlink *devlink)
+{
+ devl_lock(devlink);
+ devl_resources_unregister(devlink);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_resources_unregister);
+
+/**
+ * devl_resource_size_get - get and update size
+ *
+ * @devlink: devlink
+ * @resource_id: the requested resource id
+ * @p_resource_size: ptr to update
+ */
+int devl_resource_size_get(struct devlink *devlink,
+ u64 resource_id,
+ u64 *p_resource_size)
+{
+ struct devlink_resource *resource;
+
+ lockdep_assert_held(&devlink->lock);
+
+ resource = devlink_resource_find(devlink, NULL, resource_id);
+ if (!resource)
+ return -EINVAL;
+ *p_resource_size = resource->size_new;
+ resource->size = resource->size_new;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_resource_size_get);
+
+/**
+ * devl_dpipe_table_resource_set - set the resource id
+ *
+ * @devlink: devlink
+ * @table_name: table name
+ * @resource_id: resource id
+ * @resource_units: number of resource's units consumed per table's entry
+ */
+int devl_dpipe_table_resource_set(struct devlink *devlink,
+ const char *table_name, u64 resource_id,
+ u64 resource_units)
+{
+ struct devlink_dpipe_table *table;
+
+ table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
+ table_name, devlink);
+ if (!table)
+ return -EINVAL;
+
+ table->resource_id = resource_id;
+ table->resource_units = resource_units;
+ table->resource_valid = true;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_dpipe_table_resource_set);
+
+/**
+ * devl_resource_occ_get_register - register occupancy getter
+ *
+ * @devlink: devlink
+ * @resource_id: resource id
+ * @occ_get: occupancy getter callback
+ * @occ_get_priv: occupancy getter callback priv
+ */
+void devl_resource_occ_get_register(struct devlink *devlink,
+ u64 resource_id,
+ devlink_resource_occ_get_t *occ_get,
+ void *occ_get_priv)
+{
+ struct devlink_resource *resource;
+
+ lockdep_assert_held(&devlink->lock);
+
+ resource = devlink_resource_find(devlink, NULL, resource_id);
+ if (WARN_ON(!resource))
+ return;
+ WARN_ON(resource->occ_get);
+
+ resource->occ_get = occ_get;
+ resource->occ_get_priv = occ_get_priv;
+}
+EXPORT_SYMBOL_GPL(devl_resource_occ_get_register);
+
+/**
+ * devlink_resource_occ_get_register - register occupancy getter
+ *
+ * @devlink: devlink
+ * @resource_id: resource id
+ * @occ_get: occupancy getter callback
+ * @occ_get_priv: occupancy getter callback priv
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_resource_occ_get_register(struct devlink *devlink,
+ u64 resource_id,
+ devlink_resource_occ_get_t *occ_get,
+ void *occ_get_priv)
+{
+ devl_lock(devlink);
+ devl_resource_occ_get_register(devlink, resource_id,
+ occ_get, occ_get_priv);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
+
+/**
+ * devl_resource_occ_get_unregister - unregister occupancy getter
+ *
+ * @devlink: devlink
+ * @resource_id: resource id
+ */
+void devl_resource_occ_get_unregister(struct devlink *devlink,
+ u64 resource_id)
+{
+ struct devlink_resource *resource;
+
+ lockdep_assert_held(&devlink->lock);
+
+ resource = devlink_resource_find(devlink, NULL, resource_id);
+ if (WARN_ON(!resource))
+ return;
+ WARN_ON(!resource->occ_get);
+
+ resource->occ_get = NULL;
+ resource->occ_get_priv = NULL;
+}
+EXPORT_SYMBOL_GPL(devl_resource_occ_get_unregister);
+
+/**
+ * devlink_resource_occ_get_unregister - unregister occupancy getter
+ *
+ * @devlink: devlink
+ * @resource_id: resource id
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_resource_occ_get_unregister(struct devlink *devlink,
+ u64 resource_id)
+{
+ devl_lock(devlink);
+ devl_resource_occ_get_unregister(devlink, resource_id);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
+
+static int devlink_param_verify(const struct devlink_param *param)
+{
+ if (!param || !param->name || !param->supported_cmodes)
+ return -EINVAL;
+ if (param->generic)
+ return devlink_param_generic_verify(param);
+ else
+ return devlink_param_driver_verify(param);
+}
+
+/**
+ * devlink_params_register - register configuration parameters
+ *
+ * @devlink: devlink
+ * @params: configuration parameters array
+ * @params_count: number of parameters provided
+ *
+ * Register the configuration parameters supported by the driver.
+ */
+int devlink_params_register(struct devlink *devlink,
+ const struct devlink_param *params,
+ size_t params_count)
+{
+ const struct devlink_param *param = params;
+ int i, err;
+
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ for (i = 0; i < params_count; i++, param++) {
+ err = devlink_param_register(devlink, param);
+ if (err)
+ goto rollback;
+ }
+ return 0;
+
+rollback:
+ if (!i)
+ return err;
+
+ for (param--; i > 0; i--, param--)
+ devlink_param_unregister(devlink, param);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_params_register);
+
+/**
+ * devlink_params_unregister - unregister configuration parameters
+ * @devlink: devlink
+ * @params: configuration parameters to unregister
+ * @params_count: number of parameters provided
+ */
+void devlink_params_unregister(struct devlink *devlink,
+ const struct devlink_param *params,
+ size_t params_count)
+{
+ const struct devlink_param *param = params;
+ int i;
+
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ for (i = 0; i < params_count; i++, param++)
+ devlink_param_unregister(devlink, param);
+}
+EXPORT_SYMBOL_GPL(devlink_params_unregister);
+
+/**
+ * devlink_param_register - register one configuration parameter
+ *
+ * @devlink: devlink
+ * @param: one configuration parameter
+ *
+ * Register the configuration parameter supported by the driver.
+ * Return: returns 0 on successful registration or error code otherwise.
+ */
+int devlink_param_register(struct devlink *devlink,
+ const struct devlink_param *param)
+{
+ struct devlink_param_item *param_item;
+
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ WARN_ON(devlink_param_verify(param));
+ WARN_ON(devlink_param_find_by_name(&devlink->param_list, param->name));
+
+ if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
+ WARN_ON(param->get || param->set);
+ else
+ WARN_ON(!param->get || !param->set);
+
+ param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
+ if (!param_item)
+ return -ENOMEM;
+
+ param_item->param = param;
+
+ list_add_tail(¶m_item->list, &devlink->param_list);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_param_register);
+
+/**
+ * devlink_param_unregister - unregister one configuration parameter
+ * @devlink: devlink
+ * @param: configuration parameter to unregister
+ */
+void devlink_param_unregister(struct devlink *devlink,
+ const struct devlink_param *param)
+{
+ struct devlink_param_item *param_item;
+
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ param_item =
+ devlink_param_find_by_name(&devlink->param_list, param->name);
+ WARN_ON(!param_item);
+ list_del(¶m_item->list);
+ kfree(param_item);
+}
+EXPORT_SYMBOL_GPL(devlink_param_unregister);
+
+/**
+ * devlink_param_driverinit_value_get - get configuration parameter
+ * value for driver initializing
+ *
+ * @devlink: devlink
+ * @param_id: parameter ID
+ * @init_val: value of parameter in driverinit configuration mode
+ *
+ * This function should be used by the driver to get driverinit
+ * configuration for initialization after reload command.
+ */
+int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
+ union devlink_param_value *init_val)
+{
+ struct devlink_param_item *param_item;
+
+ if (!devlink_reload_supported(devlink->ops))
+ return -EOPNOTSUPP;
+
+ param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
+ if (!param_item)
+ return -EINVAL;
+
+ if (!param_item->driverinit_value_valid ||
+ !devlink_param_cmode_is_supported(param_item->param,
+ DEVLINK_PARAM_CMODE_DRIVERINIT))
+ return -EOPNOTSUPP;
+
+ if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
+ strcpy(init_val->vstr, param_item->driverinit_value.vstr);
+ else
+ *init_val = param_item->driverinit_value;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
+
+/**
+ * devlink_param_driverinit_value_set - set value of configuration
+ * parameter for driverinit
+ * configuration mode
+ *
+ * @devlink: devlink
+ * @param_id: parameter ID
+ * @init_val: value of parameter to set for driverinit configuration mode
+ *
+ * This function should be used by the driver to set driverinit
+ * configuration mode default value.
+ */
+int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
+ union devlink_param_value init_val)
+{
+ struct devlink_param_item *param_item;
+
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
+ if (!param_item)
+ return -EINVAL;
+
+ if (!devlink_param_cmode_is_supported(param_item->param,
+ DEVLINK_PARAM_CMODE_DRIVERINIT))
+ return -EOPNOTSUPP;
+
+ if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
+ strcpy(param_item->driverinit_value.vstr, init_val.vstr);
+ else
+ param_item->driverinit_value = init_val;
+ param_item->driverinit_value_valid = true;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
+
+/**
+ * devlink_param_value_changed - notify devlink on a parameter's value
+ * change. Should be called by the driver
+ * right after the change.
+ *
+ * @devlink: devlink
+ * @param_id: parameter ID
+ *
+ * This function should be used by the driver to notify devlink on value
+ * change, excluding driverinit configuration mode.
+ * For driverinit configuration mode driver should use the function
+ */
+void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
+{
+ struct devlink_param_item *param_item;
+
+ param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
+ WARN_ON(!param_item);
+
+ devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
+}
+EXPORT_SYMBOL_GPL(devlink_param_value_changed);
+
+/**
+ * devl_region_create - create a new address region
+ *
+ * @devlink: devlink
+ * @ops: region operations and name
+ * @region_max_snapshots: Maximum supported number of snapshots for region
+ * @region_size: size of region
+ */
+struct devlink_region *devl_region_create(struct devlink *devlink,
+ const struct devlink_region_ops *ops,
+ u32 region_max_snapshots,
+ u64 region_size)
+{
+ struct devlink_region *region;
+
+ devl_assert_locked(devlink);
+
+ if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
+ return ERR_PTR(-EINVAL);
+
+ if (devlink_region_get_by_name(devlink, ops->name))
+ return ERR_PTR(-EEXIST);
+
+ region = kzalloc(sizeof(*region), GFP_KERNEL);
+ if (!region)
+ return ERR_PTR(-ENOMEM);
+
+ region->devlink = devlink;
+ region->max_snapshots = region_max_snapshots;
+ region->ops = ops;
+ region->size = region_size;
+ INIT_LIST_HEAD(®ion->snapshot_list);
+ mutex_init(®ion->snapshot_lock);
+ list_add_tail(®ion->list, &devlink->region_list);
+ devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
+
+ return region;
+}
+EXPORT_SYMBOL_GPL(devl_region_create);
+
+/**
+ * devlink_region_create - create a new address region
+ *
+ * @devlink: devlink
+ * @ops: region operations and name
+ * @region_max_snapshots: Maximum supported number of snapshots for region
+ * @region_size: size of region
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+struct devlink_region *
+devlink_region_create(struct devlink *devlink,
+ const struct devlink_region_ops *ops,
+ u32 region_max_snapshots, u64 region_size)
+{
+ struct devlink_region *region;
+
+ devl_lock(devlink);
+ region = devl_region_create(devlink, ops, region_max_snapshots,
+ region_size);
+ devl_unlock(devlink);
+ return region;
+}
+EXPORT_SYMBOL_GPL(devlink_region_create);
+
+/**
+ * devlink_port_region_create - create a new address region for a port
+ *
+ * @port: devlink port
+ * @ops: region operations and name
+ * @region_max_snapshots: Maximum supported number of snapshots for region
+ * @region_size: size of region
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+struct devlink_region *
+devlink_port_region_create(struct devlink_port *port,
+ const struct devlink_port_region_ops *ops,
+ u32 region_max_snapshots, u64 region_size)
+{
+ struct devlink *devlink = port->devlink;
+ struct devlink_region *region;
+ int err = 0;
+
+ ASSERT_DEVLINK_PORT_INITIALIZED(port);
+
+ if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
+ return ERR_PTR(-EINVAL);
+
+ devl_lock(devlink);
+
+ if (devlink_port_region_get_by_name(port, ops->name)) {
+ err = -EEXIST;
+ goto unlock;
+ }
+
+ region = kzalloc(sizeof(*region), GFP_KERNEL);
+ if (!region) {
+ err = -ENOMEM;
+ goto unlock;
+ }
+
+ region->devlink = devlink;
+ region->port = port;
+ region->max_snapshots = region_max_snapshots;
+ region->port_ops = ops;
+ region->size = region_size;
+ INIT_LIST_HEAD(®ion->snapshot_list);
+ mutex_init(®ion->snapshot_lock);
+ list_add_tail(®ion->list, &port->region_list);
+ devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
+
+ devl_unlock(devlink);
+ return region;
+
+unlock:
+ devl_unlock(devlink);
+ return ERR_PTR(err);
+}
+EXPORT_SYMBOL_GPL(devlink_port_region_create);
+
+/**
+ * devl_region_destroy - destroy address region
+ *
+ * @region: devlink region to destroy
+ */
+void devl_region_destroy(struct devlink_region *region)
+{
+ struct devlink *devlink = region->devlink;
+ struct devlink_snapshot *snapshot, *ts;
+
+ devl_assert_locked(devlink);
+
+ /* Free all snapshots of region */
+ mutex_lock(®ion->snapshot_lock);
+ list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list)
+ devlink_region_snapshot_del(region, snapshot);
+ mutex_unlock(®ion->snapshot_lock);
+
+ list_del(®ion->list);
+ mutex_destroy(®ion->snapshot_lock);
+
+ devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
+ kfree(region);
+}
+EXPORT_SYMBOL_GPL(devl_region_destroy);
+
+/**
+ * devlink_region_destroy - destroy address region
+ *
+ * @region: devlink region to destroy
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_region_destroy(struct devlink_region *region)
+{
+ struct devlink *devlink = region->devlink;
+
+ devl_lock(devlink);
+ devl_region_destroy(region);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_region_destroy);
+
+/**
+ * devlink_region_snapshot_id_get - get snapshot ID
+ *
+ * This callback should be called when adding a new snapshot,
+ * Driver should use the same id for multiple snapshots taken
+ * on multiple regions at the same time/by the same trigger.
+ *
+ * The caller of this function must use devlink_region_snapshot_id_put
+ * when finished creating regions using this id.
+ *
+ * Returns zero on success, or a negative error code on failure.
+ *
+ * @devlink: devlink
+ * @id: storage to return id
+ */
+int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
+{
+ return __devlink_region_snapshot_id_get(devlink, id);
+}
+EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
+
+/**
+ * devlink_region_snapshot_id_put - put snapshot ID reference
+ *
+ * This should be called by a driver after finishing creating snapshots
+ * with an id. Doing so ensures that the ID can later be released in the
+ * event that all snapshots using it have been destroyed.
+ *
+ * @devlink: devlink
+ * @id: id to release reference on
+ */
+void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
+{
+ __devlink_snapshot_id_decrement(devlink, id);
+}
+EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
+
+/**
+ * devlink_region_snapshot_create - create a new snapshot
+ * This will add a new snapshot of a region. The snapshot
+ * will be stored on the region struct and can be accessed
+ * from devlink. This is useful for future analyses of snapshots.
+ * Multiple snapshots can be created on a region.
+ * The @snapshot_id should be obtained using the getter function.
+ *
+ * @region: devlink region of the snapshot
+ * @data: snapshot data
+ * @snapshot_id: snapshot id to be created
+ */
+int devlink_region_snapshot_create(struct devlink_region *region,
+ u8 *data, u32 snapshot_id)
+{
+ int err;
+
+ mutex_lock(®ion->snapshot_lock);
+ err = __devlink_region_snapshot_create(region, data, snapshot_id);
+ mutex_unlock(®ion->snapshot_lock);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
+
+#define DEVLINK_TRAP(_id, _type) \
+ { \
+ .type = DEVLINK_TRAP_TYPE_##_type, \
+ .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
+ .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
+ }
+
+static const struct devlink_trap devlink_trap_generic[] = {
+ DEVLINK_TRAP(SMAC_MC, DROP),
+ DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
+ DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
+ DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
+ DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
+ DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
+ DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
+ DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
+ DEVLINK_TRAP(TAIL_DROP, DROP),
+ DEVLINK_TRAP(NON_IP_PACKET, DROP),
+ DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
+ DEVLINK_TRAP(DIP_LB, DROP),
+ DEVLINK_TRAP(SIP_MC, DROP),
+ DEVLINK_TRAP(SIP_LB, DROP),
+ DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
+ DEVLINK_TRAP(IPV4_SIP_BC, DROP),
+ DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
+ DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
+ DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
+ DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
+ DEVLINK_TRAP(RPF, EXCEPTION),
+ DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
+ DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
+ DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
+ DEVLINK_TRAP(NON_ROUTABLE, DROP),
+ DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
+ DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
+ DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
+ DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
+ DEVLINK_TRAP(STP, CONTROL),
+ DEVLINK_TRAP(LACP, CONTROL),
+ DEVLINK_TRAP(LLDP, CONTROL),
+ DEVLINK_TRAP(IGMP_QUERY, CONTROL),
+ DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
+ DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
+ DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
+ DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
+ DEVLINK_TRAP(MLD_QUERY, CONTROL),
+ DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
+ DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
+ DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
+ DEVLINK_TRAP(IPV4_DHCP, CONTROL),
+ DEVLINK_TRAP(IPV6_DHCP, CONTROL),
+ DEVLINK_TRAP(ARP_REQUEST, CONTROL),
+ DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
+ DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
+ DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
+ DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
+ DEVLINK_TRAP(IPV4_BFD, CONTROL),
+ DEVLINK_TRAP(IPV6_BFD, CONTROL),
+ DEVLINK_TRAP(IPV4_OSPF, CONTROL),
+ DEVLINK_TRAP(IPV6_OSPF, CONTROL),
+ DEVLINK_TRAP(IPV4_BGP, CONTROL),
+ DEVLINK_TRAP(IPV6_BGP, CONTROL),
+ DEVLINK_TRAP(IPV4_VRRP, CONTROL),
+ DEVLINK_TRAP(IPV6_VRRP, CONTROL),
+ DEVLINK_TRAP(IPV4_PIM, CONTROL),
+ DEVLINK_TRAP(IPV6_PIM, CONTROL),
+ DEVLINK_TRAP(UC_LB, CONTROL),
+ DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
+ DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
+ DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
+ DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
+ DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
+ DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
+ DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
+ DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
+ DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
+ DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
+ DEVLINK_TRAP(PTP_EVENT, CONTROL),
+ DEVLINK_TRAP(PTP_GENERAL, CONTROL),
+ DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
+ DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
+ DEVLINK_TRAP(EARLY_DROP, DROP),
+ DEVLINK_TRAP(VXLAN_PARSING, DROP),
+ DEVLINK_TRAP(LLC_SNAP_PARSING, DROP),
+ DEVLINK_TRAP(VLAN_PARSING, DROP),
+ DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP),
+ DEVLINK_TRAP(MPLS_PARSING, DROP),
+ DEVLINK_TRAP(ARP_PARSING, DROP),
+ DEVLINK_TRAP(IP_1_PARSING, DROP),
+ DEVLINK_TRAP(IP_N_PARSING, DROP),
+ DEVLINK_TRAP(GRE_PARSING, DROP),
+ DEVLINK_TRAP(UDP_PARSING, DROP),
+ DEVLINK_TRAP(TCP_PARSING, DROP),
+ DEVLINK_TRAP(IPSEC_PARSING, DROP),
+ DEVLINK_TRAP(SCTP_PARSING, DROP),
+ DEVLINK_TRAP(DCCP_PARSING, DROP),
+ DEVLINK_TRAP(GTP_PARSING, DROP),
+ DEVLINK_TRAP(ESP_PARSING, DROP),
+ DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP),
+ DEVLINK_TRAP(DMAC_FILTER, DROP),
+ DEVLINK_TRAP(EAPOL, CONTROL),
+ DEVLINK_TRAP(LOCKED_PORT, DROP),
+};
+
+#define DEVLINK_TRAP_GROUP(_id) \
+ { \
+ .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
+ .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
+ }
+
+static const struct devlink_trap_group devlink_trap_group_generic[] = {
+ DEVLINK_TRAP_GROUP(L2_DROPS),
+ DEVLINK_TRAP_GROUP(L3_DROPS),
+ DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
+ DEVLINK_TRAP_GROUP(BUFFER_DROPS),
+ DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
+ DEVLINK_TRAP_GROUP(ACL_DROPS),
+ DEVLINK_TRAP_GROUP(STP),
+ DEVLINK_TRAP_GROUP(LACP),
+ DEVLINK_TRAP_GROUP(LLDP),
+ DEVLINK_TRAP_GROUP(MC_SNOOPING),
+ DEVLINK_TRAP_GROUP(DHCP),
+ DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
+ DEVLINK_TRAP_GROUP(BFD),
+ DEVLINK_TRAP_GROUP(OSPF),
+ DEVLINK_TRAP_GROUP(BGP),
+ DEVLINK_TRAP_GROUP(VRRP),
+ DEVLINK_TRAP_GROUP(PIM),
+ DEVLINK_TRAP_GROUP(UC_LB),
+ DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
+ DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY),
+ DEVLINK_TRAP_GROUP(IPV6),
+ DEVLINK_TRAP_GROUP(PTP_EVENT),
+ DEVLINK_TRAP_GROUP(PTP_GENERAL),
+ DEVLINK_TRAP_GROUP(ACL_SAMPLE),
+ DEVLINK_TRAP_GROUP(ACL_TRAP),
+ DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS),
+ DEVLINK_TRAP_GROUP(EAPOL),
+};
+
+static int devlink_trap_generic_verify(const struct devlink_trap *trap)
+{
+ if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
+ return -EINVAL;
+
+ if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
+ return -EINVAL;
+
+ if (trap->type != devlink_trap_generic[trap->id].type)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int devlink_trap_driver_verify(const struct devlink_trap *trap)
+{
+ int i;
+
+ if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
+ if (!strcmp(trap->name, devlink_trap_generic[i].name))
+ return -EEXIST;
+ }
+
+ return 0;
+}
+
+static int devlink_trap_verify(const struct devlink_trap *trap)
+{
+ if (!trap || !trap->name)
+ return -EINVAL;
+
+ if (trap->generic)
+ return devlink_trap_generic_verify(trap);
+ else
+ return devlink_trap_driver_verify(trap);
+}
+
+static int
+devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
+{
+ if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
+ return -EINVAL;
+
+ if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int
+devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
+{
+ int i;
+
+ if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
+ if (!strcmp(group->name, devlink_trap_group_generic[i].name))
+ return -EEXIST;
+ }
+
+ return 0;
+}
+
+static int devlink_trap_group_verify(const struct devlink_trap_group *group)
+{
+ if (group->generic)
+ return devlink_trap_group_generic_verify(group);
+ else
+ return devlink_trap_group_driver_verify(group);
+}
+
+static void
+devlink_trap_group_notify(struct devlink *devlink,
+ const struct devlink_trap_group_item *group_item,
+ enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
+ cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
+ 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int
+devlink_trap_item_group_link(struct devlink *devlink,
+ struct devlink_trap_item *trap_item)
+{
+ u16 group_id = trap_item->trap->init_group_id;
+ struct devlink_trap_group_item *group_item;
+
+ group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
+ if (WARN_ON_ONCE(!group_item))
+ return -EINVAL;
+
+ trap_item->group_item = group_item;
+
+ return 0;
+}
+
+static void devlink_trap_notify(struct devlink *devlink,
+ const struct devlink_trap_item *trap_item,
+ enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
+ cmd != DEVLINK_CMD_TRAP_DEL);
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int
+devlink_trap_register(struct devlink *devlink,
+ const struct devlink_trap *trap, void *priv)
+{
+ struct devlink_trap_item *trap_item;
+ int err;
+
+ if (devlink_trap_item_lookup(devlink, trap->name))
+ return -EEXIST;
+
+ trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
+ if (!trap_item)
+ return -ENOMEM;
+
+ trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
+ if (!trap_item->stats) {
+ err = -ENOMEM;
+ goto err_stats_alloc;
+ }
+
+ trap_item->trap = trap;
+ trap_item->action = trap->init_action;
+ trap_item->priv = priv;
+
+ err = devlink_trap_item_group_link(devlink, trap_item);
+ if (err)
+ goto err_group_link;
+
+ err = devlink->ops->trap_init(devlink, trap, trap_item);
+ if (err)
+ goto err_trap_init;
+
+ list_add_tail(&trap_item->list, &devlink->trap_list);
+ devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
+
+ return 0;
+
+err_trap_init:
+err_group_link:
+ free_percpu(trap_item->stats);
+err_stats_alloc:
+ kfree(trap_item);
+ return err;
+}
+
+static void devlink_trap_unregister(struct devlink *devlink,
+ const struct devlink_trap *trap)
+{
+ struct devlink_trap_item *trap_item;
+
+ trap_item = devlink_trap_item_lookup(devlink, trap->name);
+ if (WARN_ON_ONCE(!trap_item))
+ return;
+
+ devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
+ list_del(&trap_item->list);
+ if (devlink->ops->trap_fini)
+ devlink->ops->trap_fini(devlink, trap, trap_item);
+ free_percpu(trap_item->stats);
+ kfree(trap_item);
+}
+
+static void devlink_trap_disable(struct devlink *devlink,
+ const struct devlink_trap *trap)
+{
+ struct devlink_trap_item *trap_item;
+
+ trap_item = devlink_trap_item_lookup(devlink, trap->name);
+ if (WARN_ON_ONCE(!trap_item))
+ return;
+
+ devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP,
+ NULL);
+ trap_item->action = DEVLINK_TRAP_ACTION_DROP;
+}
+
+/**
+ * devl_traps_register - Register packet traps with devlink.
+ * @devlink: devlink.
+ * @traps: Packet traps.
+ * @traps_count: Count of provided packet traps.
+ * @priv: Driver private information.
+ *
+ * Return: Non-zero value on failure.
+ */
+int devl_traps_register(struct devlink *devlink,
+ const struct devlink_trap *traps,
+ size_t traps_count, void *priv)
+{
+ int i, err;
+
+ if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
+ return -EINVAL;
+
+ devl_assert_locked(devlink);
+ for (i = 0; i < traps_count; i++) {
+ const struct devlink_trap *trap = &traps[i];
+
+ err = devlink_trap_verify(trap);
+ if (err)
+ goto err_trap_verify;
+
+ err = devlink_trap_register(devlink, trap, priv);
+ if (err)
+ goto err_trap_register;
+ }
+
+ return 0;
+
+err_trap_register:
+err_trap_verify:
+ for (i--; i >= 0; i--)
+ devlink_trap_unregister(devlink, &traps[i]);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devl_traps_register);
+
+/**
+ * devlink_traps_register - Register packet traps with devlink.
+ * @devlink: devlink.
+ * @traps: Packet traps.
+ * @traps_count: Count of provided packet traps.
+ * @priv: Driver private information.
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ *
+ * Return: Non-zero value on failure.
+ */
+int devlink_traps_register(struct devlink *devlink,
+ const struct devlink_trap *traps,
+ size_t traps_count, void *priv)
+{
+ int err;
+
+ devl_lock(devlink);
+ err = devl_traps_register(devlink, traps, traps_count, priv);
+ devl_unlock(devlink);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_traps_register);
+
+/**
+ * devl_traps_unregister - Unregister packet traps from devlink.
+ * @devlink: devlink.
+ * @traps: Packet traps.
+ * @traps_count: Count of provided packet traps.
+ */
+void devl_traps_unregister(struct devlink *devlink,
+ const struct devlink_trap *traps,
+ size_t traps_count)
+{
+ int i;
+
+ devl_assert_locked(devlink);
+ /* Make sure we do not have any packets in-flight while unregistering
+ * traps by disabling all of them and waiting for a grace period.
+ */
+ for (i = traps_count - 1; i >= 0; i--)
+ devlink_trap_disable(devlink, &traps[i]);
+ synchronize_rcu();
+ for (i = traps_count - 1; i >= 0; i--)
+ devlink_trap_unregister(devlink, &traps[i]);
+}
+EXPORT_SYMBOL_GPL(devl_traps_unregister);
+
+/**
+ * devlink_traps_unregister - Unregister packet traps from devlink.
+ * @devlink: devlink.
+ * @traps: Packet traps.
+ * @traps_count: Count of provided packet traps.
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_traps_unregister(struct devlink *devlink,
+ const struct devlink_trap *traps,
+ size_t traps_count)
+{
+ devl_lock(devlink);
+ devl_traps_unregister(devlink, traps, traps_count);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_traps_unregister);
+
+static void
+devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
+ size_t skb_len)
+{
+ struct devlink_stats *stats;
+
+ stats = this_cpu_ptr(trap_stats);
+ u64_stats_update_begin(&stats->syncp);
+ u64_stats_add(&stats->rx_bytes, skb_len);
+ u64_stats_inc(&stats->rx_packets);
+ u64_stats_update_end(&stats->syncp);
+}
+
+static void
+devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
+ const struct devlink_trap_item *trap_item,
+ struct devlink_port *in_devlink_port,
+ const struct flow_action_cookie *fa_cookie)
+{
+ metadata->trap_name = trap_item->trap->name;
+ metadata->trap_group_name = trap_item->group_item->group->name;
+ metadata->fa_cookie = fa_cookie;
+ metadata->trap_type = trap_item->trap->type;
+
+ spin_lock(&in_devlink_port->type_lock);
+ if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
+ metadata->input_dev = in_devlink_port->type_eth.netdev;
+ spin_unlock(&in_devlink_port->type_lock);
+}
+
+/**
+ * devlink_trap_report - Report trapped packet to drop monitor.
+ * @devlink: devlink.
+ * @skb: Trapped packet.
+ * @trap_ctx: Trap context.
+ * @in_devlink_port: Input devlink port.
+ * @fa_cookie: Flow action cookie. Could be NULL.
+ */
+void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
+ void *trap_ctx, struct devlink_port *in_devlink_port,
+ const struct flow_action_cookie *fa_cookie)
+
+{
+ struct devlink_trap_item *trap_item = trap_ctx;
+
+ devlink_trap_stats_update(trap_item->stats, skb->len);
+ devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
+
+ if (trace_devlink_trap_report_enabled()) {
+ struct devlink_trap_metadata metadata = {};
+
+ devlink_trap_report_metadata_set(&metadata, trap_item,
+ in_devlink_port, fa_cookie);
+ trace_devlink_trap_report(devlink, skb, &metadata);
+ }
+}
+EXPORT_SYMBOL_GPL(devlink_trap_report);
+
+/**
+ * devlink_trap_ctx_priv - Trap context to driver private information.
+ * @trap_ctx: Trap context.
+ *
+ * Return: Driver private information passed during registration.
+ */
+void *devlink_trap_ctx_priv(void *trap_ctx)
+{
+ struct devlink_trap_item *trap_item = trap_ctx;
+
+ return trap_item->priv;
+}
+EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
+
+static int
+devlink_trap_group_item_policer_link(struct devlink *devlink,
+ struct devlink_trap_group_item *group_item)
+{
+ u32 policer_id = group_item->group->init_policer_id;
+ struct devlink_trap_policer_item *policer_item;
+
+ if (policer_id == 0)
+ return 0;
+
+ policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
+ if (WARN_ON_ONCE(!policer_item))
+ return -EINVAL;
+
+ group_item->policer_item = policer_item;
+
+ return 0;
+}
+
+static int
+devlink_trap_group_register(struct devlink *devlink,
+ const struct devlink_trap_group *group)
+{
+ struct devlink_trap_group_item *group_item;
+ int err;
+
+ if (devlink_trap_group_item_lookup(devlink, group->name))
+ return -EEXIST;
+
+ group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
+ if (!group_item)
+ return -ENOMEM;
+
+ group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
+ if (!group_item->stats) {
+ err = -ENOMEM;
+ goto err_stats_alloc;
+ }
+
+ group_item->group = group;
+
+ err = devlink_trap_group_item_policer_link(devlink, group_item);
+ if (err)
+ goto err_policer_link;
+
+ if (devlink->ops->trap_group_init) {
+ err = devlink->ops->trap_group_init(devlink, group);
+ if (err)
+ goto err_group_init;
+ }
+
+ list_add_tail(&group_item->list, &devlink->trap_group_list);
+ devlink_trap_group_notify(devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_NEW);
+
+ return 0;
+
+err_group_init:
+err_policer_link:
+ free_percpu(group_item->stats);
+err_stats_alloc:
+ kfree(group_item);
+ return err;
+}
+
+static void
+devlink_trap_group_unregister(struct devlink *devlink,
+ const struct devlink_trap_group *group)
+{
+ struct devlink_trap_group_item *group_item;
+
+ group_item = devlink_trap_group_item_lookup(devlink, group->name);
+ if (WARN_ON_ONCE(!group_item))
+ return;
+
+ devlink_trap_group_notify(devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_DEL);
+ list_del(&group_item->list);
+ free_percpu(group_item->stats);
+ kfree(group_item);
+}
+
+/**
+ * devl_trap_groups_register - Register packet trap groups with devlink.
+ * @devlink: devlink.
+ * @groups: Packet trap groups.
+ * @groups_count: Count of provided packet trap groups.
+ *
+ * Return: Non-zero value on failure.
+ */
+int devl_trap_groups_register(struct devlink *devlink,
+ const struct devlink_trap_group *groups,
+ size_t groups_count)
+{
+ int i, err;
+
+ devl_assert_locked(devlink);
+ for (i = 0; i < groups_count; i++) {
+ const struct devlink_trap_group *group = &groups[i];
+
+ err = devlink_trap_group_verify(group);
+ if (err)
+ goto err_trap_group_verify;
+
+ err = devlink_trap_group_register(devlink, group);
+ if (err)
+ goto err_trap_group_register;
+ }
+
+ return 0;
+
+err_trap_group_register:
+err_trap_group_verify:
+ for (i--; i >= 0; i--)
+ devlink_trap_group_unregister(devlink, &groups[i]);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devl_trap_groups_register);
+
+/**
+ * devlink_trap_groups_register - Register packet trap groups with devlink.
+ * @devlink: devlink.
+ * @groups: Packet trap groups.
+ * @groups_count: Count of provided packet trap groups.
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ *
+ * Return: Non-zero value on failure.
+ */
+int devlink_trap_groups_register(struct devlink *devlink,
+ const struct devlink_trap_group *groups,
+ size_t groups_count)
+{
+ int err;
+
+ devl_lock(devlink);
+ err = devl_trap_groups_register(devlink, groups, groups_count);
+ devl_unlock(devlink);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
+
+/**
+ * devl_trap_groups_unregister - Unregister packet trap groups from devlink.
+ * @devlink: devlink.
+ * @groups: Packet trap groups.
+ * @groups_count: Count of provided packet trap groups.
+ */
+void devl_trap_groups_unregister(struct devlink *devlink,
+ const struct devlink_trap_group *groups,
+ size_t groups_count)
+{
+ int i;
+
+ devl_assert_locked(devlink);
+ for (i = groups_count - 1; i >= 0; i--)
+ devlink_trap_group_unregister(devlink, &groups[i]);
+}
+EXPORT_SYMBOL_GPL(devl_trap_groups_unregister);
+
+/**
+ * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
+ * @devlink: devlink.
+ * @groups: Packet trap groups.
+ * @groups_count: Count of provided packet trap groups.
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_trap_groups_unregister(struct devlink *devlink,
+ const struct devlink_trap_group *groups,
+ size_t groups_count)
+{
+ devl_lock(devlink);
+ devl_trap_groups_unregister(devlink, groups, groups_count);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
+
+static void
+devlink_trap_policer_notify(struct devlink *devlink,
+ const struct devlink_trap_policer_item *policer_item,
+ enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
+ cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
+ 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int
+devlink_trap_policer_register(struct devlink *devlink,
+ const struct devlink_trap_policer *policer)
+{
+ struct devlink_trap_policer_item *policer_item;
+ int err;
+
+ if (devlink_trap_policer_item_lookup(devlink, policer->id))
+ return -EEXIST;
+
+ policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
+ if (!policer_item)
+ return -ENOMEM;
+
+ policer_item->policer = policer;
+ policer_item->rate = policer->init_rate;
+ policer_item->burst = policer->init_burst;
+
+ if (devlink->ops->trap_policer_init) {
+ err = devlink->ops->trap_policer_init(devlink, policer);
+ if (err)
+ goto err_policer_init;
+ }
+
+ list_add_tail(&policer_item->list, &devlink->trap_policer_list);
+ devlink_trap_policer_notify(devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_NEW);
+
+ return 0;
+
+err_policer_init:
+ kfree(policer_item);
+ return err;
+}
+
+static void
+devlink_trap_policer_unregister(struct devlink *devlink,
+ const struct devlink_trap_policer *policer)
+{
+ struct devlink_trap_policer_item *policer_item;
+
+ policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
+ if (WARN_ON_ONCE(!policer_item))
+ return;
+
+ devlink_trap_policer_notify(devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_DEL);
+ list_del(&policer_item->list);
+ if (devlink->ops->trap_policer_fini)
+ devlink->ops->trap_policer_fini(devlink, policer);
+ kfree(policer_item);
+}
+
+/**
+ * devl_trap_policers_register - Register packet trap policers with devlink.
+ * @devlink: devlink.
+ * @policers: Packet trap policers.
+ * @policers_count: Count of provided packet trap policers.
+ *
+ * Return: Non-zero value on failure.
+ */
+int
+devl_trap_policers_register(struct devlink *devlink,
+ const struct devlink_trap_policer *policers,
+ size_t policers_count)
+{
+ int i, err;
+
+ devl_assert_locked(devlink);
+ for (i = 0; i < policers_count; i++) {
+ const struct devlink_trap_policer *policer = &policers[i];
+
+ if (WARN_ON(policer->id == 0 ||
+ policer->max_rate < policer->min_rate ||
+ policer->max_burst < policer->min_burst)) {
+ err = -EINVAL;
+ goto err_trap_policer_verify;
+ }
+
+ err = devlink_trap_policer_register(devlink, policer);
+ if (err)
+ goto err_trap_policer_register;
+ }
+ return 0;
+
+err_trap_policer_register:
+err_trap_policer_verify:
+ for (i--; i >= 0; i--)
+ devlink_trap_policer_unregister(devlink, &policers[i]);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devl_trap_policers_register);
+
+/**
+ * devl_trap_policers_unregister - Unregister packet trap policers from devlink.
+ * @devlink: devlink.
+ * @policers: Packet trap policers.
+ * @policers_count: Count of provided packet trap policers.
+ */
+void
+devl_trap_policers_unregister(struct devlink *devlink,
+ const struct devlink_trap_policer *policers,
+ size_t policers_count)
+{
+ int i;
+
+ devl_assert_locked(devlink);
+ for (i = policers_count - 1; i >= 0; i--)
+ devlink_trap_policer_unregister(devlink, &policers[i]);
+}
+EXPORT_SYMBOL_GPL(devl_trap_policers_unregister);
+
+static void __devlink_compat_running_version(struct devlink *devlink,
+ char *buf, size_t len)
+{
+ struct devlink_info_req req = {};
+ const struct nlattr *nlattr;
+ struct sk_buff *msg;
+ int rem, err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ req.msg = msg;
+ err = devlink->ops->info_get(devlink, &req, NULL);
+ if (err)
+ goto free_msg;
+
+ nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
+ const struct nlattr *kv;
+ int rem_kv;
+
+ if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
+ continue;
+
+ nla_for_each_nested(kv, nlattr, rem_kv) {
+ if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
+ continue;
+
+ strlcat(buf, nla_data(kv), len);
+ strlcat(buf, " ", len);
+ }
+ }
+free_msg:
+ nlmsg_free(msg);
+}
+
+void devlink_compat_running_version(struct devlink *devlink,
+ char *buf, size_t len)
+{
+ if (!devlink->ops->info_get)
+ return;
+
+ devl_lock(devlink);
+ __devlink_compat_running_version(devlink, buf, len);
+ devl_unlock(devlink);
+}
+
+int devlink_compat_flash_update(struct devlink *devlink, const char *file_name)
+{
+ struct devlink_flash_update_params params = {};
+ int ret;
+
+ if (!devlink->ops->flash_update)
+ return -EOPNOTSUPP;
+
+ ret = request_firmware(¶ms.fw, file_name, devlink->dev);
+ if (ret)
+ return ret;
+
+ devl_lock(devlink);
+ devlink_flash_update_begin_notify(devlink);
+ ret = devlink->ops->flash_update(devlink, ¶ms, NULL);
+ devlink_flash_update_end_notify(devlink);
+ devl_unlock(devlink);
+
+ release_firmware(params.fw);
+
+ return ret;
+}
+
+int devlink_compat_phys_port_name_get(struct net_device *dev,
+ char *name, size_t len)
+{
+ struct devlink_port *devlink_port;
+
+ /* RTNL mutex is held here which ensures that devlink_port
+ * instance cannot disappear in the middle. No need to take
+ * any devlink lock as only permanent values are accessed.
+ */
+ ASSERT_RTNL();
+
+ devlink_port = dev->devlink_port;
+ if (!devlink_port)
+ return -EOPNOTSUPP;
+
+ return __devlink_port_phys_port_name_get(devlink_port, name, len);
+}
+
+int devlink_compat_switch_id_get(struct net_device *dev,
+ struct netdev_phys_item_id *ppid)
+{
+ struct devlink_port *devlink_port;
+
+ /* Caller must hold RTNL mutex or reference to dev, which ensures that
+ * devlink_port instance cannot disappear in the middle. No need to take
+ * any devlink lock as only permanent values are accessed.
+ */
+ devlink_port = dev->devlink_port;
+ if (!devlink_port || !devlink_port->switch_port)
+ return -EOPNOTSUPP;
+
+ memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
+
+ return 0;
+}
+
+static void __net_exit devlink_pernet_pre_exit(struct net *net)
+{
+ struct devlink *devlink;
+ u32 actions_performed;
+ unsigned long index;
+ int err;
+
+ /* In case network namespace is getting destroyed, reload
+ * all devlink instances from this namespace into init_net.
+ */
+ devlinks_xa_for_each_registered_get(net, index, devlink) {
+ WARN_ON(!(devlink->features & DEVLINK_F_RELOAD));
+ mutex_lock(&devlink->lock);
+ err = devlink_reload(devlink, &init_net,
+ DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
+ DEVLINK_RELOAD_LIMIT_UNSPEC,
+ &actions_performed, NULL);
+ mutex_unlock(&devlink->lock);
+ if (err && err != -EOPNOTSUPP)
+ pr_warn("Failed to reload devlink instance into init_net\n");
+ devlink_put(devlink);
+ }
+}
+
+static struct pernet_operations devlink_pernet_ops __net_initdata = {
+ .pre_exit = devlink_pernet_pre_exit,
+};
+
+static int __init devlink_init(void)
+{
+ int err;
+
+ err = genl_register_family(&devlink_nl_family);
+ if (err)
+ goto out;
+ err = register_pernet_subsys(&devlink_pernet_ops);
+
+out:
+ WARN_ON(err);
+ return err;
+}
+
+subsys_initcall(devlink_init);
projects / platform / kernel / linux-rpi.git / commitdiff