From: Jiri Pirko Date: Fri, 11 Aug 2023 15:57:03 +0000 (+0200) Subject: devlink: parse rate attrs in doit() callbacks X-Git-Tag: v6.6.17~4098^2~119^2~11 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=41a1d4d1399af0f4ba9754086b23f7b9576eb25f;p=platform%2Fkernel%2Flinux-rpi.git devlink: parse rate attrs in doit() callbacks No need to give the rate any special treatment in netlink attributes parsing, as unlike for ports, there is only a couple of commands benefiting from that. Remove DEVLINK_NL_FLAG_NEED_RATE*, make pre_doit() callback simpler by moving the rate attributes parsing to rate_*_doit() ops. Signed-off-by: Jiri Pirko Acked-by: Jakub Kicinski Link: https://lore.kernel.org/r/20230811155714.1736405-3-jiri@resnulli.us Signed-off-by: Jakub Kicinski --- diff --git a/net/devlink/devl_internal.h b/net/devlink/devl_internal.h index 3bbeceb..ca04e4e 100644 --- a/net/devlink/devl_internal.h +++ b/net/devlink/devl_internal.h @@ -92,8 +92,6 @@ static inline bool devl_is_registered(struct devlink *devlink) /* Netlink */ #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) enum devlink_multicast_groups { DEVLINK_MCGRP_CONFIG, @@ -205,11 +203,7 @@ int devlink_resources_validate(struct devlink *devlink, /* Rates */ int devlink_rate_nodes_check(struct devlink *devlink, u16 mode, struct netlink_ext_ack *extack); -struct devlink_rate * -devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info); -struct devlink_rate * -devlink_rate_node_get_from_info(struct devlink *devlink, - struct genl_info *info); + /* Devlink nl cmds */ int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info); int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb, struct genl_info *info); diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c index 46cdd5d..b7b6850 100644 --- a/net/devlink/leftover.c +++ b/net/devlink/leftover.c @@ -232,13 +232,13 @@ devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs) return devlink_rate_node_get_by_name(devlink, rate_node_name); } -struct devlink_rate * +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); } -struct devlink_rate * +static struct devlink_rate * devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info) { struct nlattr **attrs = info->attrs; @@ -1041,10 +1041,15 @@ const struct devlink_cmd devl_cmd_rate_get = { 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 devlink *devlink = info->user_ptr[0]; + struct devlink_rate *devlink_rate; struct sk_buff *msg; int err; + devlink_rate = devlink_rate_get_from_info(devlink, info); + if (IS_ERR(devlink_rate)) + return PTR_ERR(devlink_rate); + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; @@ -1629,11 +1634,16 @@ static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops, 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; + struct devlink *devlink = info->user_ptr[0]; + struct devlink_rate *devlink_rate; + const struct devlink_ops *ops; int err; + devlink_rate = devlink_rate_get_from_info(devlink, info); + if (IS_ERR(devlink_rate)) + return PTR_ERR(devlink_rate); + + ops = devlink->ops; if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type)) return -EOPNOTSUPP; @@ -1704,18 +1714,22 @@ err_strdup: 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; + struct devlink *devlink = info->user_ptr[0]; + struct devlink_rate *rate_node; int err; + rate_node = devlink_rate_node_get_from_info(devlink, info); + if (IS_ERR(rate_node)) + return PTR_ERR(rate_node); + if (refcount_read(&rate_node->refcnt) > 1) { NL_SET_ERR_MSG(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); + err = devlink->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); @@ -6307,14 +6321,12 @@ const struct genl_small_ops devlink_nl_small_ops[54] = { .cmd = DEVLINK_CMD_RATE_GET, .doit = devlink_nl_cmd_rate_get_doit, .dumpit = devlink_nl_instance_iter_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, @@ -6325,7 +6337,6 @@ const struct genl_small_ops devlink_nl_small_ops[54] = { .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, diff --git a/net/devlink/netlink.c b/net/devlink/netlink.c index 9fd683f..96cf8a1 100644 --- a/net/devlink/netlink.c +++ b/net/devlink/netlink.c @@ -132,24 +132,6 @@ int devlink_nl_pre_doit(const struct genl_split_ops *ops, 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; } return 0;