linux/net/devlink/trap.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
 * Copyright (c) 2016 Jiri Pirko <[email protected]>
 */

#include <trace/events/devlink.h>

#include "devl_internal.h"

struct devlink_stats { … };

/**
 * 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 { … };

/**
 * 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 { … };

/**
 * 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 { … };

static struct devlink_trap_policer_item *
devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
{ … }

static struct devlink_trap_item *
devlink_trap_item_lookup(struct devlink *devlink, const char *name)
{ … }

static struct devlink_trap_item *
devlink_trap_item_get_from_info(struct devlink *devlink,
				struct genl_info *info)
{ … }

static int
devlink_trap_action_get_from_info(struct genl_info *info,
				  enum devlink_trap_action *p_trap_action)
{ … }

static int devlink_trap_metadata_put(struct sk_buff *msg,
				     const struct devlink_trap *trap)
{ … }

static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
				    struct devlink_stats *stats)
{ … }

static int
devlink_trap_group_stats_put(struct sk_buff *msg,
			     struct devlink_stats __percpu *trap_stats)
{ … }

static int devlink_trap_stats_put(struct sk_buff *msg, struct devlink *devlink,
				  const struct devlink_trap_item *trap_item)
{ … }

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)
{ … }

int devlink_nl_trap_get_doit(struct sk_buff *skb, struct genl_info *info)
{ … }

static int devlink_nl_trap_get_dump_one(struct sk_buff *msg,
					struct devlink *devlink,
					struct netlink_callback *cb, int flags)
{ … }

int devlink_nl_trap_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
{ … }

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)
{ … }

static int devlink_trap_action_set(struct devlink *devlink,
				   struct devlink_trap_item *trap_item,
				   struct genl_info *info)
{ … }

int devlink_nl_trap_set_doit(struct sk_buff *skb, struct genl_info *info)
{ … }

static struct devlink_trap_group_item *
devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
{ … }

static struct devlink_trap_group_item *
devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
{ … }

static struct devlink_trap_group_item *
devlink_trap_group_item_get_from_info(struct devlink *devlink,
				      struct genl_info *info)
{ … }

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)
{ … }

int devlink_nl_trap_group_get_doit(struct sk_buff *skb, struct genl_info *info)
{ … }

static int devlink_nl_trap_group_get_dump_one(struct sk_buff *msg,
					      struct devlink *devlink,
					      struct netlink_callback *cb,
					      int flags)
{ … }

int devlink_nl_trap_group_get_dumpit(struct sk_buff *skb,
				     struct netlink_callback *cb)
{ … }

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)
{ … }

static int
devlink_trap_group_action_set(struct devlink *devlink,
			      struct devlink_trap_group_item *group_item,
			      struct genl_info *info, bool *p_modified)
{ … }

static int devlink_trap_group_set(struct devlink *devlink,
				  struct devlink_trap_group_item *group_item,
				  struct genl_info *info)
{ … }

int devlink_nl_trap_group_set_doit(struct sk_buff *skb, struct genl_info *info)
{ … }

static struct devlink_trap_policer_item *
devlink_trap_policer_item_get_from_info(struct devlink *devlink,
					struct genl_info *info)
{ … }

static int
devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
			       const struct devlink_trap_policer *policer)
{ … }

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)
{ … }

int devlink_nl_trap_policer_get_doit(struct sk_buff *skb,
				     struct genl_info *info)
{ … }

static int devlink_nl_trap_policer_get_dump_one(struct sk_buff *msg,
						struct devlink *devlink,
						struct netlink_callback *cb,
						int flags)
{ … }

int devlink_nl_trap_policer_get_dumpit(struct sk_buff *skb,
				       struct netlink_callback *cb)
{ … }

static int
devlink_trap_policer_set(struct devlink *devlink,
			 struct devlink_trap_policer_item *policer_item,
			 struct genl_info *info)
{ … }

int devlink_nl_trap_policer_set_doit(struct sk_buff *skb,
				     struct genl_info *info)
{ … }

#define DEVLINK_TRAP(_id, _type) …

static const struct devlink_trap devlink_trap_generic[] = …;

#define DEVLINK_TRAP_GROUP(_id) …

static const struct devlink_trap_group devlink_trap_group_generic[] = …;

static int devlink_trap_generic_verify(const struct devlink_trap *trap)
{ … }

static int devlink_trap_driver_verify(const struct devlink_trap *trap)
{ … }

static int devlink_trap_verify(const struct devlink_trap *trap)
{ … }

static int
devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
{ … }

static int
devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
{ … }

static int devlink_trap_group_verify(const struct devlink_trap_group *group)
{ … }

static void
devlink_trap_group_notify(struct devlink *devlink,
			  const struct devlink_trap_group_item *group_item,
			  enum devlink_command cmd)
{ … }

void devlink_trap_groups_notify_register(struct devlink *devlink)
{ … }

void devlink_trap_groups_notify_unregister(struct devlink *devlink)
{ … }

static int
devlink_trap_item_group_link(struct devlink *devlink,
			     struct devlink_trap_item *trap_item)
{ … }

static void devlink_trap_notify(struct devlink *devlink,
				const struct devlink_trap_item *trap_item,
				enum devlink_command cmd)
{ … }

void devlink_traps_notify_register(struct devlink *devlink)
{ … }

void devlink_traps_notify_unregister(struct devlink *devlink)
{ … }

static int
devlink_trap_register(struct devlink *devlink,
		      const struct devlink_trap *trap, void *priv)
{ … }

static void devlink_trap_unregister(struct devlink *devlink,
				    const struct devlink_trap *trap)
{ … }

static void devlink_trap_disable(struct devlink *devlink,
				 const struct devlink_trap *trap)
{ … }

/**
 * 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)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * 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)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * 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)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * 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)
{ … }
EXPORT_SYMBOL_GPL(…);

static void
devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
			  size_t skb_len)
{ … }

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)
{ … }

/**
 * 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)

{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * 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)
{ … }
EXPORT_SYMBOL_GPL(…);

static int
devlink_trap_group_item_policer_link(struct devlink *devlink,
				     struct devlink_trap_group_item *group_item)
{ … }

static int
devlink_trap_group_register(struct devlink *devlink,
			    const struct devlink_trap_group *group)
{ … }

static void
devlink_trap_group_unregister(struct devlink *devlink,
			      const struct devlink_trap_group *group)
{ … }

/**
 * 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)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * 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)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * 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)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * 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)
{ … }
EXPORT_SYMBOL_GPL(…);

static void
devlink_trap_policer_notify(struct devlink *devlink,
			    const struct devlink_trap_policer_item *policer_item,
			    enum devlink_command cmd)
{ … }

void devlink_trap_policers_notify_register(struct devlink *devlink)
{ … }

void devlink_trap_policers_notify_unregister(struct devlink *devlink)
{ … }

static int
devlink_trap_policer_register(struct devlink *devlink,
			      const struct devlink_trap_policer *policer)
{ … }

static void
devlink_trap_policer_unregister(struct devlink *devlink,
				const struct devlink_trap_policer *policer)
{ … }

/**
 * 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)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * 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)
{ … }
EXPORT_SYMBOL_GPL(…);