| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jiri Pirko | 5969 | 77.78% | 27 | 40.91% |
| Ido Schimmel | 1094 | 14.26% | 4 | 6.06% |
| Jakub Kiciński | 200 | 2.61% | 8 | 12.12% |
| Alex Vesker | 120 | 1.56% | 3 | 4.55% |
| Moshe Shemesh | 109 | 1.42% | 5 | 7.58% |
| Leon Romanovsky | 67 | 0.87% | 3 | 4.55% |
| Dmytro Linkin | 47 | 0.61% | 2 | 3.03% |
| Vasundhara Volam | 25 | 0.33% | 4 | 6.06% |
| Michal Wilczynski | 24 | 0.31% | 2 | 3.03% |
| Arkadi Sharshevsky | 7 | 0.09% | 3 | 4.55% |
| Danielle Ratson | 4 | 0.05% | 1 | 1.52% |
| Parav Pandit | 3 | 0.04% | 1 | 1.52% |
| Dan Carpenter | 3 | 0.04% | 1 | 1.52% |
| Thomas Gleixner | 1 | 0.01% | 1 | 1.52% |
| Jacob E Keller | 1 | 0.01% | 1 | 1.52% |
| Total | 7674 | 66 |
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// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2016 Mellanox Technologies. All rights reserved. * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> */ #include <trace/events/devlink.h> #include "devl_internal.h" 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; } int devlink_nl_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(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_trap_get_dump_one(struct sk_buff *msg, struct devlink *devlink, struct netlink_callback *cb, int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_trap_item *trap_item; int idx = 0; int err = 0; list_for_each_entry(trap_item, &devlink->trap_list, list) { if (idx < state->idx) { idx++; continue; } err = devlink_nl_trap_fill(msg, devlink, trap_item, DEVLINK_CMD_TRAP_NEW, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, flags); if (err) { state->idx = idx; break; } idx++; } return err; } int devlink_nl_trap_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) { return devlink_nl_dumpit(skb, cb, devlink_nl_trap_get_dump_one); } 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(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(info->extack, "Invalid trap action"); return -EINVAL; } return __devlink_trap_action_set(devlink, trap_item, trap_action, info->extack); } int devlink_nl_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(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; } int devlink_nl_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(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_trap_group_get_dump_one(struct sk_buff *msg, struct devlink *devlink, struct netlink_callback *cb, int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_trap_group_item *group_item; int idx = 0; int err = 0; list_for_each_entry(group_item, &devlink->trap_group_list, list) { if (idx < state->idx) { idx++; continue; } err = devlink_nl_trap_group_fill(msg, devlink, group_item, DEVLINK_CMD_TRAP_GROUP_NEW, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, flags); if (err) { state->idx = idx; break; } idx++; } return err; } int devlink_nl_trap_group_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) { return devlink_nl_dumpit(skb, cb, devlink_nl_trap_group_get_dump_one); } 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(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; u32 policer_id; int err; if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) return 0; if (!devlink->ops->trap_group_set) return -EOPNOTSUPP; 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(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; } int devlink_nl_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(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(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; } int devlink_nl_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(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_trap_policer_get_dump_one(struct sk_buff *msg, struct devlink *devlink, struct netlink_callback *cb, int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_trap_policer_item *policer_item; int idx = 0; int err = 0; list_for_each_entry(policer_item, &devlink->trap_policer_list, list) { if (idx < state->idx) { idx++; continue; } err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, DEVLINK_CMD_TRAP_POLICER_NEW, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, flags); if (err) { state->idx = idx; break; } idx++; } return err; } int devlink_nl_trap_policer_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) { return devlink_nl_dumpit(skb, cb, devlink_nl_trap_policer_get_dump_one); } 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(extack, "Policer rate lower than limit"); return -EINVAL; } if (rate > policer_item->policer->max_rate) { NL_SET_ERR_MSG(extack, "Policer rate higher than limit"); return -EINVAL; } if (burst < policer_item->policer->min_burst) { NL_SET_ERR_MSG(extack, "Policer burst size lower than limit"); return -EINVAL; } if (burst > policer_item->policer->max_burst) { NL_SET_ERR_MSG(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; } int devlink_nl_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(extack, "Device did not register this trap policer"); return -ENOENT; } return devlink_trap_policer_set(devlink, policer_item, info); } #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 (!devl_is_registered(devlink) || !devlink_nl_notify_need(devlink)) 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; } devlink_nl_notify_send(devlink, msg); } void devlink_trap_groups_notify_register(struct devlink *devlink) { struct devlink_trap_group_item *group_item; list_for_each_entry(group_item, &devlink->trap_group_list, list) devlink_trap_group_notify(devlink, group_item, DEVLINK_CMD_TRAP_GROUP_NEW); } void devlink_trap_groups_notify_unregister(struct devlink *devlink) { struct devlink_trap_group_item *group_item; list_for_each_entry_reverse(group_item, &devlink->trap_group_list, list) devlink_trap_group_notify(devlink, group_item, DEVLINK_CMD_TRAP_GROUP_DEL); } 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 (!devl_is_registered(devlink) || !devlink_nl_notify_need(devlink)) 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; } devlink_nl_notify_send(devlink, msg); } void devlink_traps_notify_register(struct devlink *devlink) { struct devlink_trap_item *trap_item; list_for_each_entry(trap_item, &devlink->trap_list, list) devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW); } void devlink_traps_notify_unregister(struct devlink *devlink) { struct devlink_trap_item *trap_item; list_for_each_entry_reverse(trap_item, &devlink->trap_list, list) devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL); } 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 (tracepoint_enabled(devlink_trap_report)) { 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 (!devl_is_registered(devlink) || !devlink_nl_notify_need(devlink)) 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; } devlink_nl_notify_send(devlink, msg); } void devlink_trap_policers_notify_register(struct devlink *devlink) { struct devlink_trap_policer_item *policer_item; list_for_each_entry(policer_item, &devlink->trap_policer_list, list) devlink_trap_policer_notify(devlink, policer_item, DEVLINK_CMD_TRAP_POLICER_NEW); } void devlink_trap_policers_notify_unregister(struct devlink *devlink) { struct devlink_trap_policer_item *policer_item; list_for_each_entry_reverse(policer_item, &devlink->trap_policer_list, list) devlink_trap_policer_notify(devlink, policer_item, DEVLINK_CMD_TRAP_POLICER_DEL); } 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);
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