#include "hsr_main.h"
#include "hsr_forward.h"
-
static bool is_admin_up(struct net_device *dev)
{
return dev && (dev->flags & IFF_UP);
return has_carrier;
}
-
static void hsr_check_announce(struct net_device *hsr_dev,
unsigned char old_operstate)
{
return mtu_max - HSR_HLEN;
}
-
static int hsr_dev_change_mtu(struct net_device *dev, int new_mtu)
{
struct hsr_priv *hsr;
return 0;
}
-
static int hsr_dev_close(struct net_device *dev)
{
/* Nothing to do here. */
return 0;
}
-
static netdev_features_t hsr_features_recompute(struct hsr_priv *hsr,
netdev_features_t features)
{
return hsr_features_recompute(hsr, features);
}
-
static int hsr_dev_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct hsr_priv *hsr = netdev_priv(dev);
return NETDEV_TX_OK;
}
-
static const struct header_ops hsr_header_ops = {
.create = eth_header,
.parse = eth_header_parse,
kfree_skb(skb);
}
-
/* Announce (supervision frame) timer function
*/
static void hsr_announce(struct timer_list *t)
rcu_read_unlock();
}
-
/* According to comments in the declaration of struct net_device, this function
* is "Called from unregister, can be used to call free_netdev". Ok then...
*/
dev->features |= NETIF_F_NETNS_LOCAL;
}
-
/* Return true if dev is a HSR master; return false otherwise.
*/
inline bool is_hsr_master(struct net_device *dev)
#include "hsr_main.h"
#include "hsr_framereg.h"
-
struct hsr_node;
struct hsr_frame_info {
bool is_local_exclusive;
};
-
/* The uses I can see for these HSR supervision frames are:
* 1) Use the frames that are sent after node initialization ("HSR_TLV.Type =
* 22") to reset any sequence_nr counters belonging to that node. Useful if
return true;
}
-
static struct sk_buff *create_stripped_skb(struct sk_buff *skb_in,
struct hsr_frame_info *frame)
{
return skb_clone(frame->skb_std, GFP_ATOMIC);
}
-
static void hsr_fill_tag(struct sk_buff *skb, struct hsr_frame_info *frame,
struct hsr_port *port, u8 protoVersion)
{
return create_tagged_skb(frame->skb_std, frame, port);
}
-
static void hsr_deliver_master(struct sk_buff *skb, struct net_device *dev,
struct hsr_node *node_src)
{
return dev_queue_xmit(skb);
}
-
/* Forward the frame through all devices except:
* - Back through the receiving device
* - If it's a HSR frame: through a device where it has passed before
}
}
-
static void check_local_dest(struct hsr_priv *hsr, struct sk_buff *skb,
struct hsr_frame_info *frame)
{
}
}
-
static int hsr_fill_frame_info(struct hsr_frame_info *frame,
struct sk_buff *skb, struct hsr_port *port)
{
#include "hsr_framereg.h"
#include "hsr_netlink.h"
-
struct hsr_node {
struct list_head mac_list;
unsigned char MacAddressA[ETH_ALEN];
struct rcu_head rcu_head;
};
-
/* TODO: use hash lists for mac addresses (linux/jhash.h)? */
-
/* seq_nr_after(a, b) - return true if a is after (higher in sequence than) b,
* false otherwise.
*/
#define seq_nr_after_or_eq(a, b) (!seq_nr_before((a), (b)))
#define seq_nr_before_or_eq(a, b) (!seq_nr_after((a), (b)))
-
bool hsr_addr_is_self(struct hsr_priv *hsr, unsigned char *addr)
{
struct hsr_node *node;
return NULL;
}
-
/* Helper for device init; the self_node_db is used in hsr_rcv() to recognize
* frames from self that's been looped over the HSR ring.
*/
skb_push(skb, sizeof(struct hsrv1_ethhdr_sp));
}
-
/* 'skb' is a frame meant for this host, that is to be passed to upper layers.
*
* If the frame was sent by a node's B interface, replace the source
ether_addr_copy(eth_hdr(skb)->h_dest, node_dst->MacAddressB);
}
-
void hsr_register_frame_in(struct hsr_node *node, struct hsr_port *port,
u16 sequence_nr)
{
return 0;
}
-
static struct hsr_port *get_late_port(struct hsr_priv *hsr,
struct hsr_node *node)
{
return NULL;
}
-
/* Remove stale sequence_nr records. Called by timer every
* HSR_LIFE_CHECK_INTERVAL (two seconds or so).
*/
rcu_read_unlock();
}
-
void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,
unsigned char addr[ETH_ALEN])
{
return NULL;
}
-
int hsr_get_node_data(struct hsr_priv *hsr,
const unsigned char *addr,
unsigned char addr_b[ETH_ALEN],
struct hsr_port *port;
unsigned long tdiff;
-
rcu_read_lock();
node = find_node_by_AddrA(&hsr->node_db, addr);
if (!node) {
#include "hsr_framereg.h"
#include "hsr_slave.h"
-
static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event,
void *ptr)
{
return NOTIFY_DONE;
}
-
struct hsr_port *hsr_port_get_hsr(struct hsr_priv *hsr, enum hsr_port_type pt)
{
struct hsr_port *port;
.notifier_call = hsr_netdev_notify, /* Slave event notifications */
};
-
static int __init hsr_init(void)
{
int res;
#include <linux/netdevice.h>
#include <linux/list.h>
-
/* Time constants as specified in the HSR specification (IEC-62439-3 2010)
* Table 8.
* All values in milliseconds.
#define HSR_NODE_FORGET_TIME 60000 /* ms */
#define HSR_ANNOUNCE_INTERVAL 100 /* ms */
-
/* By how much may slave1 and slave2 timestamps of latest received frame from
* each node differ before we notify of communication problem?
*/
#define HSR_SEQNR_START (USHRT_MAX - 1024)
#define HSR_SUP_SEQNR_START (HSR_SEQNR_START / 2)
-
/* How often shall we check for broken ring and remove node entries older than
* HSR_NODE_FORGET_TIME?
*/
#define PRUNE_PERIOD 3000 /* ms */
-
#define HSR_TLV_ANNOUNCE 22
#define HSR_TLV_LIFE_CHECK 23
-
/* HSR Tag.
* As defined in IEC-62439-3:2010, the HSR tag is really { ethertype = 0x88FB,
* path, LSDU_size, sequence Nr }. But we let eth_header() create { h_dest,
struct hsr_tag hsr_tag;
} __packed;
-
/* HSR Supervision Frame data types.
* Field names as defined in the IEC:2010 standard for HSR.
*/
struct hsr_sup_tag hsr_sup;
} __packed;
-
enum hsr_port_type {
HSR_PT_NONE = 0, /* Must be 0, used by framereg */
HSR_PT_SLAVE_A,
[IFLA_HSR_SEQ_NR] = { .type = NLA_U16 },
};
-
/* Here, it seems a netdevice has already been allocated for us, and the
* hsr_dev_setup routine has been executed. Nice!
*/
.fill_info = hsr_fill_info,
};
-
-
/* attribute policy */
static const struct nla_policy hsr_genl_policy[HSR_A_MAX + 1] = {
[HSR_A_NODE_ADDR] = { .len = ETH_ALEN },
{ .name = "hsr-network", },
};
-
-
/* This is called if for some node with MAC address addr, we only get frames
* over one of the slave interfaces. This would indicate an open network ring
* (i.e. a link has failed somewhere).
if (!msg_head)
goto nla_put_failure;
-
res = nla_put(skb, HSR_A_NODE_ADDR, ETH_ALEN, addr);
if (res < 0)
goto nla_put_failure;
rcu_read_unlock();
}
-
/* HSR_C_GET_NODE_STATUS lets userspace query the internal HSR node table
* about the status of a specific node in the network, defined by its MAC
* address.
if (!is_hsr_master(hsr_dev))
goto invalid;
-
/* Send reply */
-
skb_out = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb_out) {
res = -ENOMEM;
if (!is_hsr_master(hsr_dev))
goto invalid;
-
/* Send reply */
-
skb_out = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb_out) {
res = -ENOMEM;
return res;
}
-
static const struct genl_ops hsr_ops[] = {
{
.cmd = HSR_C_GET_NODE_STATUS,
#include "hsr_forward.h"
#include "hsr_framereg.h"
-
static rx_handler_result_t hsr_handle_frame(struct sk_buff **pskb)
{
struct sk_buff *skb = *pskb;
return rcu_access_pointer(dev->rx_handler) == hsr_handle_frame;
}
-
static int hsr_check_dev_ok(struct net_device *dev)
{
/* Don't allow HSR on non-ethernet like devices */
return 0;
}
-
/* Setup device to be added to the HSR bridge. */
static int hsr_portdev_setup(struct net_device *dev, struct hsr_port *port)
{
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