| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jiri Pirko | 5265 | 60.64% | 26 | 43.33% |
| Ido Schimmel | 1507 | 17.36% | 7 | 11.67% |
| Petr Machata | 715 | 8.23% | 10 | 16.67% |
| Arkadi Sharshevsky | 463 | 5.33% | 3 | 5.00% |
| Nir Dotan | 293 | 3.37% | 5 | 8.33% |
| Yotam Gigi | 239 | 2.75% | 3 | 5.00% |
| Danielle Ratson | 156 | 1.80% | 2 | 3.33% |
| Amit Cohen | 33 | 0.38% | 2 | 3.33% |
| Kees Cook | 11 | 0.13% | 1 | 1.67% |
| Jilin Yuan | 1 | 0.01% | 1 | 1.67% |
| Total | 8683 | 60 |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 /* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */ #include <linux/kernel.h> #include <linux/types.h> #include <linux/slab.h> #include <linux/errno.h> #include <linux/rhashtable.h> #include <linux/list.h> #include <linux/idr.h> #include <linux/refcount.h> #include <net/flow_offload.h> #include "item.h" #include "trap.h" #include "core_acl_flex_actions.h" enum mlxsw_afa_set_type { MLXSW_AFA_SET_TYPE_NEXT, MLXSW_AFA_SET_TYPE_GOTO, }; /* afa_set_type * Type of the record at the end of the action set. */ MLXSW_ITEM32(afa, set, type, 0xA0, 28, 4); /* afa_set_next_action_set_ptr * A pointer to the next action set in the KVD Centralized database. */ MLXSW_ITEM32(afa, set, next_action_set_ptr, 0xA4, 0, 24); /* afa_set_goto_g * group - When set, the binding is of an ACL group. When cleared, * the binding is of an ACL. * Must be set to 1 for Spectrum. */ MLXSW_ITEM32(afa, set, goto_g, 0xA4, 29, 1); enum mlxsw_afa_set_goto_binding_cmd { /* continue go the next binding point */ MLXSW_AFA_SET_GOTO_BINDING_CMD_NONE, /* jump to the next binding point no return */ MLXSW_AFA_SET_GOTO_BINDING_CMD_JUMP, /* terminate the acl binding */ MLXSW_AFA_SET_GOTO_BINDING_CMD_TERM = 4, }; /* afa_set_goto_binding_cmd */ MLXSW_ITEM32(afa, set, goto_binding_cmd, 0xA4, 24, 3); /* afa_set_goto_next_binding * ACL/ACL group identifier. If the g bit is set, this field should hold * the acl_group_id, else it should hold the acl_id. */ MLXSW_ITEM32(afa, set, goto_next_binding, 0xA4, 0, 16); /* afa_all_action_type * Action Type. */ MLXSW_ITEM32(afa, all, action_type, 0x00, 24, 6); struct mlxsw_afa { unsigned int max_acts_per_set; const struct mlxsw_afa_ops *ops; void *ops_priv; struct rhashtable set_ht; struct rhashtable fwd_entry_ht; struct rhashtable cookie_ht; struct rhashtable policer_ht; struct idr cookie_idr; struct list_head policer_list; }; #define MLXSW_AFA_SET_LEN 0xA8 struct mlxsw_afa_set_ht_key { char enc_actions[MLXSW_AFA_SET_LEN]; /* Encoded set */ bool is_first; }; /* Set structure holds one action set record. It contains up to three * actions (depends on size of particular actions). The set is either * put directly to a rule, or it is stored in KVD linear area. * To prevent duplicate entries in KVD linear area, a hashtable is * used to track sets that were previously inserted and may be shared. */ struct mlxsw_afa_set { struct rhash_head ht_node; struct mlxsw_afa_set_ht_key ht_key; u32 kvdl_index; u8 shared:1, /* Inserted in hashtable (doesn't mean that * kvdl_index is valid). */ has_trap:1, has_police:1; refcount_t ref_count; struct mlxsw_afa_set *next; /* Pointer to the next set. */ struct mlxsw_afa_set *prev; /* Pointer to the previous set, * note that set may have multiple * sets from multiple blocks * pointing at it. This is only * usable until commit. */ }; static const struct rhashtable_params mlxsw_afa_set_ht_params = { .key_len = sizeof(struct mlxsw_afa_set_ht_key), .key_offset = offsetof(struct mlxsw_afa_set, ht_key), .head_offset = offsetof(struct mlxsw_afa_set, ht_node), .automatic_shrinking = true, }; struct mlxsw_afa_fwd_entry_ht_key { u16 local_port; }; struct mlxsw_afa_fwd_entry { struct rhash_head ht_node; struct mlxsw_afa_fwd_entry_ht_key ht_key; u32 kvdl_index; refcount_t ref_count; }; static const struct rhashtable_params mlxsw_afa_fwd_entry_ht_params = { .key_len = sizeof(struct mlxsw_afa_fwd_entry_ht_key), .key_offset = offsetof(struct mlxsw_afa_fwd_entry, ht_key), .head_offset = offsetof(struct mlxsw_afa_fwd_entry, ht_node), .automatic_shrinking = true, }; struct mlxsw_afa_cookie { struct rhash_head ht_node; refcount_t ref_count; struct rcu_head rcu; u32 cookie_index; struct flow_action_cookie fa_cookie; }; static u32 mlxsw_afa_cookie_hash(const struct flow_action_cookie *fa_cookie, u32 seed) { return jhash2((u32 *) fa_cookie->cookie, fa_cookie->cookie_len / sizeof(u32), seed); } static u32 mlxsw_afa_cookie_key_hashfn(const void *data, u32 len, u32 seed) { const struct flow_action_cookie *fa_cookie = data; return mlxsw_afa_cookie_hash(fa_cookie, seed); } static u32 mlxsw_afa_cookie_obj_hashfn(const void *data, u32 len, u32 seed) { const struct mlxsw_afa_cookie *cookie = data; return mlxsw_afa_cookie_hash(&cookie->fa_cookie, seed); } static int mlxsw_afa_cookie_obj_cmpfn(struct rhashtable_compare_arg *arg, const void *obj) { const struct flow_action_cookie *fa_cookie = arg->key; const struct mlxsw_afa_cookie *cookie = obj; if (cookie->fa_cookie.cookie_len == fa_cookie->cookie_len) return memcmp(cookie->fa_cookie.cookie, fa_cookie->cookie, fa_cookie->cookie_len); return 1; } static const struct rhashtable_params mlxsw_afa_cookie_ht_params = { .head_offset = offsetof(struct mlxsw_afa_cookie, ht_node), .hashfn = mlxsw_afa_cookie_key_hashfn, .obj_hashfn = mlxsw_afa_cookie_obj_hashfn, .obj_cmpfn = mlxsw_afa_cookie_obj_cmpfn, .automatic_shrinking = true, }; struct mlxsw_afa_policer { struct rhash_head ht_node; struct list_head list; /* Member of policer_list */ refcount_t ref_count; u32 fa_index; u16 policer_index; }; static const struct rhashtable_params mlxsw_afa_policer_ht_params = { .key_len = sizeof(u32), .key_offset = offsetof(struct mlxsw_afa_policer, fa_index), .head_offset = offsetof(struct mlxsw_afa_policer, ht_node), .automatic_shrinking = true, }; struct mlxsw_afa *mlxsw_afa_create(unsigned int max_acts_per_set, const struct mlxsw_afa_ops *ops, void *ops_priv) { struct mlxsw_afa *mlxsw_afa; int err; mlxsw_afa = kzalloc(sizeof(*mlxsw_afa), GFP_KERNEL); if (!mlxsw_afa) return ERR_PTR(-ENOMEM); err = rhashtable_init(&mlxsw_afa->set_ht, &mlxsw_afa_set_ht_params); if (err) goto err_set_rhashtable_init; err = rhashtable_init(&mlxsw_afa->fwd_entry_ht, &mlxsw_afa_fwd_entry_ht_params); if (err) goto err_fwd_entry_rhashtable_init; err = rhashtable_init(&mlxsw_afa->cookie_ht, &mlxsw_afa_cookie_ht_params); if (err) goto err_cookie_rhashtable_init; err = rhashtable_init(&mlxsw_afa->policer_ht, &mlxsw_afa_policer_ht_params); if (err) goto err_policer_rhashtable_init; idr_init(&mlxsw_afa->cookie_idr); INIT_LIST_HEAD(&mlxsw_afa->policer_list); mlxsw_afa->max_acts_per_set = max_acts_per_set; mlxsw_afa->ops = ops; mlxsw_afa->ops_priv = ops_priv; return mlxsw_afa; err_policer_rhashtable_init: rhashtable_destroy(&mlxsw_afa->cookie_ht); err_cookie_rhashtable_init: rhashtable_destroy(&mlxsw_afa->fwd_entry_ht); err_fwd_entry_rhashtable_init: rhashtable_destroy(&mlxsw_afa->set_ht); err_set_rhashtable_init: kfree(mlxsw_afa); return ERR_PTR(err); } EXPORT_SYMBOL(mlxsw_afa_create); void mlxsw_afa_destroy(struct mlxsw_afa *mlxsw_afa) { WARN_ON(!list_empty(&mlxsw_afa->policer_list)); WARN_ON(!idr_is_empty(&mlxsw_afa->cookie_idr)); idr_destroy(&mlxsw_afa->cookie_idr); rhashtable_destroy(&mlxsw_afa->policer_ht); rhashtable_destroy(&mlxsw_afa->cookie_ht); rhashtable_destroy(&mlxsw_afa->fwd_entry_ht); rhashtable_destroy(&mlxsw_afa->set_ht); kfree(mlxsw_afa); } EXPORT_SYMBOL(mlxsw_afa_destroy); static void mlxsw_afa_set_goto_set(struct mlxsw_afa_set *set, enum mlxsw_afa_set_goto_binding_cmd cmd, u16 group_id) { char *actions = set->ht_key.enc_actions; mlxsw_afa_set_type_set(actions, MLXSW_AFA_SET_TYPE_GOTO); mlxsw_afa_set_goto_g_set(actions, true); mlxsw_afa_set_goto_binding_cmd_set(actions, cmd); mlxsw_afa_set_goto_next_binding_set(actions, group_id); } static void mlxsw_afa_set_next_set(struct mlxsw_afa_set *set, u32 next_set_kvdl_index) { char *actions = set->ht_key.enc_actions; mlxsw_afa_set_type_set(actions, MLXSW_AFA_SET_TYPE_NEXT); mlxsw_afa_set_next_action_set_ptr_set(actions, next_set_kvdl_index); } static struct mlxsw_afa_set *mlxsw_afa_set_create(bool is_first) { struct mlxsw_afa_set *set; set = kzalloc(sizeof(*set), GFP_KERNEL); if (!set) return NULL; /* Need to initialize the set to pass by default */ mlxsw_afa_set_goto_set(set, MLXSW_AFA_SET_GOTO_BINDING_CMD_TERM, 0); set->ht_key.is_first = is_first; refcount_set(&set->ref_count, 1); return set; } static void mlxsw_afa_set_destroy(struct mlxsw_afa_set *set) { kfree(set); } static int mlxsw_afa_set_share(struct mlxsw_afa *mlxsw_afa, struct mlxsw_afa_set *set) { int err; err = rhashtable_insert_fast(&mlxsw_afa->set_ht, &set->ht_node, mlxsw_afa_set_ht_params); if (err) return err; err = mlxsw_afa->ops->kvdl_set_add(mlxsw_afa->ops_priv, &set->kvdl_index, set->ht_key.enc_actions, set->ht_key.is_first); if (err) goto err_kvdl_set_add; set->shared = true; set->prev = NULL; return 0; err_kvdl_set_add: rhashtable_remove_fast(&mlxsw_afa->set_ht, &set->ht_node, mlxsw_afa_set_ht_params); return err; } static void mlxsw_afa_set_unshare(struct mlxsw_afa *mlxsw_afa, struct mlxsw_afa_set *set) { mlxsw_afa->ops->kvdl_set_del(mlxsw_afa->ops_priv, set->kvdl_index, set->ht_key.is_first); rhashtable_remove_fast(&mlxsw_afa->set_ht, &set->ht_node, mlxsw_afa_set_ht_params); set->shared = false; } static void mlxsw_afa_set_put(struct mlxsw_afa *mlxsw_afa, struct mlxsw_afa_set *set) { if (!refcount_dec_and_test(&set->ref_count)) return; if (set->shared) mlxsw_afa_set_unshare(mlxsw_afa, set); mlxsw_afa_set_destroy(set); } static struct mlxsw_afa_set *mlxsw_afa_set_get(struct mlxsw_afa *mlxsw_afa, struct mlxsw_afa_set *orig_set) { struct mlxsw_afa_set *set; int err; /* There is a hashtable of sets maintained. If a set with the exact * same encoding exists, we reuse it. Otherwise, the current set * is shared by making it available to others using the hash table. */ set = rhashtable_lookup_fast(&mlxsw_afa->set_ht, &orig_set->ht_key, mlxsw_afa_set_ht_params); if (set) { refcount_inc(&set->ref_count); mlxsw_afa_set_put(mlxsw_afa, orig_set); } else { set = orig_set; err = mlxsw_afa_set_share(mlxsw_afa, set); if (err) return ERR_PTR(err); } return set; } /* Block structure holds a list of action sets. One action block * represents one chain of actions executed upon match of a rule. */ struct mlxsw_afa_block { struct mlxsw_afa *afa; bool finished; struct mlxsw_afa_set *first_set; struct mlxsw_afa_set *cur_set; unsigned int cur_act_index; /* In current set. */ struct list_head resource_list; /* List of resources held by actions * in this block. */ }; struct mlxsw_afa_resource { struct list_head list; void (*destructor)(struct mlxsw_afa_block *block, struct mlxsw_afa_resource *resource); }; static void mlxsw_afa_resource_add(struct mlxsw_afa_block *block, struct mlxsw_afa_resource *resource) { list_add(&resource->list, &block->resource_list); } static void mlxsw_afa_resource_del(struct mlxsw_afa_resource *resource) { list_del(&resource->list); } static void mlxsw_afa_resources_destroy(struct mlxsw_afa_block *block) { struct mlxsw_afa_resource *resource, *tmp; list_for_each_entry_safe(resource, tmp, &block->resource_list, list) { resource->destructor(block, resource); } } struct mlxsw_afa_block *mlxsw_afa_block_create(struct mlxsw_afa *mlxsw_afa) { struct mlxsw_afa_block *block; block = kzalloc(sizeof(*block), GFP_KERNEL); if (!block) return ERR_PTR(-ENOMEM); INIT_LIST_HEAD(&block->resource_list); block->afa = mlxsw_afa; /* At least one action set is always present, so just create it here */ block->first_set = mlxsw_afa_set_create(true); if (!block->first_set) goto err_first_set_create; /* In case user instructs to have dummy first set, we leave it * empty here and create another, real, set right away. */ if (mlxsw_afa->ops->dummy_first_set) { block->cur_set = mlxsw_afa_set_create(false); if (!block->cur_set) goto err_second_set_create; block->cur_set->prev = block->first_set; block->first_set->next = block->cur_set; } else { block->cur_set = block->first_set; } return block; err_second_set_create: mlxsw_afa_set_destroy(block->first_set); err_first_set_create: kfree(block); return ERR_PTR(-ENOMEM); } EXPORT_SYMBOL(mlxsw_afa_block_create); void mlxsw_afa_block_destroy(struct mlxsw_afa_block *block) { struct mlxsw_afa_set *set = block->first_set; struct mlxsw_afa_set *next_set; do { next_set = set->next; mlxsw_afa_set_put(block->afa, set); set = next_set; } while (set); mlxsw_afa_resources_destroy(block); kfree(block); } EXPORT_SYMBOL(mlxsw_afa_block_destroy); int mlxsw_afa_block_commit(struct mlxsw_afa_block *block) { struct mlxsw_afa_set *set = block->cur_set; struct mlxsw_afa_set *prev_set; block->cur_set = NULL; block->finished = true; /* Go over all linked sets starting from last * and try to find existing set in the hash table. * In case it is not there, assign a KVD linear index * and insert it. */ do { prev_set = set->prev; set = mlxsw_afa_set_get(block->afa, set); if (IS_ERR(set)) /* No rollback is needed since the chain is * in consistent state and mlxsw_afa_block_destroy * will take care of putting it away. */ return PTR_ERR(set); if (prev_set) { prev_set->next = set; mlxsw_afa_set_next_set(prev_set, set->kvdl_index); set = prev_set; } } while (prev_set); block->first_set = set; return 0; } EXPORT_SYMBOL(mlxsw_afa_block_commit); char *mlxsw_afa_block_first_set(struct mlxsw_afa_block *block) { return block->first_set->ht_key.enc_actions; } EXPORT_SYMBOL(mlxsw_afa_block_first_set); char *mlxsw_afa_block_cur_set(struct mlxsw_afa_block *block) { return block->cur_set->ht_key.enc_actions; } EXPORT_SYMBOL(mlxsw_afa_block_cur_set); u32 mlxsw_afa_block_first_kvdl_index(struct mlxsw_afa_block *block) { /* First set is never in KVD linear. So the first set * with valid KVD linear index is always the second one. */ if (WARN_ON(!block->first_set->next)) return 0; return block->first_set->next->kvdl_index; } EXPORT_SYMBOL(mlxsw_afa_block_first_kvdl_index); int mlxsw_afa_block_activity_get(struct mlxsw_afa_block *block, bool *activity) { u32 kvdl_index = mlxsw_afa_block_first_kvdl_index(block); return block->afa->ops->kvdl_set_activity_get(block->afa->ops_priv, kvdl_index, activity); } EXPORT_SYMBOL(mlxsw_afa_block_activity_get); int mlxsw_afa_block_continue(struct mlxsw_afa_block *block) { if (block->finished) return -EINVAL; mlxsw_afa_set_goto_set(block->cur_set, MLXSW_AFA_SET_GOTO_BINDING_CMD_NONE, 0); block->finished = true; return 0; } EXPORT_SYMBOL(mlxsw_afa_block_continue); int mlxsw_afa_block_jump(struct mlxsw_afa_block *block, u16 group_id) { if (block->finished) return -EINVAL; mlxsw_afa_set_goto_set(block->cur_set, MLXSW_AFA_SET_GOTO_BINDING_CMD_JUMP, group_id); block->finished = true; return 0; } EXPORT_SYMBOL(mlxsw_afa_block_jump); int mlxsw_afa_block_terminate(struct mlxsw_afa_block *block) { if (block->finished) return -EINVAL; mlxsw_afa_set_goto_set(block->cur_set, MLXSW_AFA_SET_GOTO_BINDING_CMD_TERM, 0); block->finished = true; return 0; } EXPORT_SYMBOL(mlxsw_afa_block_terminate); static struct mlxsw_afa_fwd_entry * mlxsw_afa_fwd_entry_create(struct mlxsw_afa *mlxsw_afa, u16 local_port) { struct mlxsw_afa_fwd_entry *fwd_entry; int err; fwd_entry = kzalloc(sizeof(*fwd_entry), GFP_KERNEL); if (!fwd_entry) return ERR_PTR(-ENOMEM); fwd_entry->ht_key.local_port = local_port; refcount_set(&fwd_entry->ref_count, 1); err = rhashtable_insert_fast(&mlxsw_afa->fwd_entry_ht, &fwd_entry->ht_node, mlxsw_afa_fwd_entry_ht_params); if (err) goto err_rhashtable_insert; err = mlxsw_afa->ops->kvdl_fwd_entry_add(mlxsw_afa->ops_priv, &fwd_entry->kvdl_index, local_port); if (err) goto err_kvdl_fwd_entry_add; return fwd_entry; err_kvdl_fwd_entry_add: rhashtable_remove_fast(&mlxsw_afa->fwd_entry_ht, &fwd_entry->ht_node, mlxsw_afa_fwd_entry_ht_params); err_rhashtable_insert: kfree(fwd_entry); return ERR_PTR(err); } static void mlxsw_afa_fwd_entry_destroy(struct mlxsw_afa *mlxsw_afa, struct mlxsw_afa_fwd_entry *fwd_entry) { mlxsw_afa->ops->kvdl_fwd_entry_del(mlxsw_afa->ops_priv, fwd_entry->kvdl_index); rhashtable_remove_fast(&mlxsw_afa->fwd_entry_ht, &fwd_entry->ht_node, mlxsw_afa_fwd_entry_ht_params); kfree(fwd_entry); } static struct mlxsw_afa_fwd_entry * mlxsw_afa_fwd_entry_get(struct mlxsw_afa *mlxsw_afa, u16 local_port) { struct mlxsw_afa_fwd_entry_ht_key ht_key = {0}; struct mlxsw_afa_fwd_entry *fwd_entry; ht_key.local_port = local_port; fwd_entry = rhashtable_lookup_fast(&mlxsw_afa->fwd_entry_ht, &ht_key, mlxsw_afa_fwd_entry_ht_params); if (fwd_entry) { refcount_inc(&fwd_entry->ref_count); return fwd_entry; } return mlxsw_afa_fwd_entry_create(mlxsw_afa, local_port); } static void mlxsw_afa_fwd_entry_put(struct mlxsw_afa *mlxsw_afa, struct mlxsw_afa_fwd_entry *fwd_entry) { if (!refcount_dec_and_test(&fwd_entry->ref_count)) return; mlxsw_afa_fwd_entry_destroy(mlxsw_afa, fwd_entry); } struct mlxsw_afa_fwd_entry_ref { struct mlxsw_afa_resource resource; struct mlxsw_afa_fwd_entry *fwd_entry; }; static void mlxsw_afa_fwd_entry_ref_destroy(struct mlxsw_afa_block *block, struct mlxsw_afa_fwd_entry_ref *fwd_entry_ref) { mlxsw_afa_resource_del(&fwd_entry_ref->resource); mlxsw_afa_fwd_entry_put(block->afa, fwd_entry_ref->fwd_entry); kfree(fwd_entry_ref); } static void mlxsw_afa_fwd_entry_ref_destructor(struct mlxsw_afa_block *block, struct mlxsw_afa_resource *resource) { struct mlxsw_afa_fwd_entry_ref *fwd_entry_ref; fwd_entry_ref = container_of(resource, struct mlxsw_afa_fwd_entry_ref, resource); mlxsw_afa_fwd_entry_ref_destroy(block, fwd_entry_ref); } static struct mlxsw_afa_fwd_entry_ref * mlxsw_afa_fwd_entry_ref_create(struct mlxsw_afa_block *block, u16 local_port) { struct mlxsw_afa_fwd_entry_ref *fwd_entry_ref; struct mlxsw_afa_fwd_entry *fwd_entry; int err; fwd_entry_ref = kzalloc(sizeof(*fwd_entry_ref), GFP_KERNEL); if (!fwd_entry_ref) return ERR_PTR(-ENOMEM); fwd_entry = mlxsw_afa_fwd_entry_get(block->afa, local_port); if (IS_ERR(fwd_entry)) { err = PTR_ERR(fwd_entry); goto err_fwd_entry_get; } fwd_entry_ref->fwd_entry = fwd_entry; fwd_entry_ref->resource.destructor = mlxsw_afa_fwd_entry_ref_destructor; mlxsw_afa_resource_add(block, &fwd_entry_ref->resource); return fwd_entry_ref; err_fwd_entry_get: kfree(fwd_entry_ref); return ERR_PTR(err); } struct mlxsw_afa_counter { struct mlxsw_afa_resource resource; u32 counter_index; }; static void mlxsw_afa_counter_destroy(struct mlxsw_afa_block *block, struct mlxsw_afa_counter *counter) { mlxsw_afa_resource_del(&counter->resource); block->afa->ops->counter_index_put(block->afa->ops_priv, counter->counter_index); kfree(counter); } static void mlxsw_afa_counter_destructor(struct mlxsw_afa_block *block, struct mlxsw_afa_resource *resource) { struct mlxsw_afa_counter *counter; counter = container_of(resource, struct mlxsw_afa_counter, resource); mlxsw_afa_counter_destroy(block, counter); } static struct mlxsw_afa_counter * mlxsw_afa_counter_create(struct mlxsw_afa_block *block) { struct mlxsw_afa_counter *counter; int err; counter = kzalloc(sizeof(*counter), GFP_KERNEL); if (!counter) return ERR_PTR(-ENOMEM); err = block->afa->ops->counter_index_get(block->afa->ops_priv, &counter->counter_index); if (err) goto err_counter_index_get; counter->resource.destructor = mlxsw_afa_counter_destructor; mlxsw_afa_resource_add(block, &counter->resource); return counter; err_counter_index_get: kfree(counter); return ERR_PTR(err); } /* 20 bits is a maximum that hardware can handle in trap with userdef action * and carry along with the trapped packet. */ #define MLXSW_AFA_COOKIE_INDEX_BITS 20 #define MLXSW_AFA_COOKIE_INDEX_MAX ((1 << MLXSW_AFA_COOKIE_INDEX_BITS) - 1) static struct mlxsw_afa_cookie * mlxsw_afa_cookie_create(struct mlxsw_afa *mlxsw_afa, const struct flow_action_cookie *fa_cookie) { struct mlxsw_afa_cookie *cookie; u32 cookie_index; int err; cookie = kzalloc(sizeof(*cookie) + fa_cookie->cookie_len, GFP_KERNEL); if (!cookie) return ERR_PTR(-ENOMEM); refcount_set(&cookie->ref_count, 1); cookie->fa_cookie = *fa_cookie; memcpy(cookie->fa_cookie.cookie, fa_cookie->cookie, fa_cookie->cookie_len); err = rhashtable_insert_fast(&mlxsw_afa->cookie_ht, &cookie->ht_node, mlxsw_afa_cookie_ht_params); if (err) goto err_rhashtable_insert; /* Start cookie indexes with 1. Leave the 0 index unused. Packets * that come from the HW which are not dropped by drop-with-cookie * action are going to pass cookie_index 0 to lookup. */ cookie_index = 1; err = idr_alloc_u32(&mlxsw_afa->cookie_idr, cookie, &cookie_index, MLXSW_AFA_COOKIE_INDEX_MAX, GFP_KERNEL); if (err) goto err_idr_alloc; cookie->cookie_index = cookie_index; return cookie; err_idr_alloc: rhashtable_remove_fast(&mlxsw_afa->cookie_ht, &cookie->ht_node, mlxsw_afa_cookie_ht_params); err_rhashtable_insert: kfree(cookie); return ERR_PTR(err); } static void mlxsw_afa_cookie_destroy(struct mlxsw_afa *mlxsw_afa, struct mlxsw_afa_cookie *cookie) { idr_remove(&mlxsw_afa->cookie_idr, cookie->cookie_index); rhashtable_remove_fast(&mlxsw_afa->cookie_ht, &cookie->ht_node, mlxsw_afa_cookie_ht_params); kfree_rcu(cookie, rcu); } static struct mlxsw_afa_cookie * mlxsw_afa_cookie_get(struct mlxsw_afa *mlxsw_afa, const struct flow_action_cookie *fa_cookie) { struct mlxsw_afa_cookie *cookie; cookie = rhashtable_lookup_fast(&mlxsw_afa->cookie_ht, fa_cookie, mlxsw_afa_cookie_ht_params); if (cookie) { refcount_inc(&cookie->ref_count); return cookie; } return mlxsw_afa_cookie_create(mlxsw_afa, fa_cookie); } static void mlxsw_afa_cookie_put(struct mlxsw_afa *mlxsw_afa, struct mlxsw_afa_cookie *cookie) { if (!refcount_dec_and_test(&cookie->ref_count)) return; mlxsw_afa_cookie_destroy(mlxsw_afa, cookie); } /* RCU read lock must be held */ const struct flow_action_cookie * mlxsw_afa_cookie_lookup(struct mlxsw_afa *mlxsw_afa, u32 cookie_index) { struct mlxsw_afa_cookie *cookie; /* 0 index means no cookie */ if (!cookie_index) return NULL; cookie = idr_find(&mlxsw_afa->cookie_idr, cookie_index); if (!cookie) return NULL; return &cookie->fa_cookie; } EXPORT_SYMBOL(mlxsw_afa_cookie_lookup); struct mlxsw_afa_cookie_ref { struct mlxsw_afa_resource resource; struct mlxsw_afa_cookie *cookie; }; static void mlxsw_afa_cookie_ref_destroy(struct mlxsw_afa_block *block, struct mlxsw_afa_cookie_ref *cookie_ref) { mlxsw_afa_resource_del(&cookie_ref->resource); mlxsw_afa_cookie_put(block->afa, cookie_ref->cookie); kfree(cookie_ref); } static void mlxsw_afa_cookie_ref_destructor(struct mlxsw_afa_block *block, struct mlxsw_afa_resource *resource) { struct mlxsw_afa_cookie_ref *cookie_ref; cookie_ref = container_of(resource, struct mlxsw_afa_cookie_ref, resource); mlxsw_afa_cookie_ref_destroy(block, cookie_ref); } static struct mlxsw_afa_cookie_ref * mlxsw_afa_cookie_ref_create(struct mlxsw_afa_block *block, const struct flow_action_cookie *fa_cookie) { struct mlxsw_afa_cookie_ref *cookie_ref; struct mlxsw_afa_cookie *cookie; int err; cookie_ref = kzalloc(sizeof(*cookie_ref), GFP_KERNEL); if (!cookie_ref) return ERR_PTR(-ENOMEM); cookie = mlxsw_afa_cookie_get(block->afa, fa_cookie); if (IS_ERR(cookie)) { err = PTR_ERR(cookie); goto err_cookie_get; } cookie_ref->cookie = cookie; cookie_ref->resource.destructor = mlxsw_afa_cookie_ref_destructor; mlxsw_afa_resource_add(block, &cookie_ref->resource); return cookie_ref; err_cookie_get: kfree(cookie_ref); return ERR_PTR(err); } static struct mlxsw_afa_policer * mlxsw_afa_policer_create(struct mlxsw_afa *mlxsw_afa, u32 fa_index, u64 rate_bytes_ps, u32 burst, struct netlink_ext_ack *extack) { struct mlxsw_afa_policer *policer; int err; policer = kzalloc(sizeof(*policer), GFP_KERNEL); if (!policer) return ERR_PTR(-ENOMEM); err = mlxsw_afa->ops->policer_add(mlxsw_afa->ops_priv, rate_bytes_ps, burst, &policer->policer_index, extack); if (err) goto err_policer_add; refcount_set(&policer->ref_count, 1); policer->fa_index = fa_index; err = rhashtable_insert_fast(&mlxsw_afa->policer_ht, &policer->ht_node, mlxsw_afa_policer_ht_params); if (err) goto err_rhashtable_insert; list_add_tail(&policer->list, &mlxsw_afa->policer_list); return policer; err_rhashtable_insert: mlxsw_afa->ops->policer_del(mlxsw_afa->ops_priv, policer->policer_index); err_policer_add: kfree(policer); return ERR_PTR(err); } static void mlxsw_afa_policer_destroy(struct mlxsw_afa *mlxsw_afa, struct mlxsw_afa_policer *policer) { list_del(&policer->list); rhashtable_remove_fast(&mlxsw_afa->policer_ht, &policer->ht_node, mlxsw_afa_policer_ht_params); mlxsw_afa->ops->policer_del(mlxsw_afa->ops_priv, policer->policer_index); kfree(policer); } static struct mlxsw_afa_policer * mlxsw_afa_policer_get(struct mlxsw_afa *mlxsw_afa, u32 fa_index, u64 rate_bytes_ps, u32 burst, struct netlink_ext_ack *extack) { struct mlxsw_afa_policer *policer; policer = rhashtable_lookup_fast(&mlxsw_afa->policer_ht, &fa_index, mlxsw_afa_policer_ht_params); if (policer) { refcount_inc(&policer->ref_count); return policer; } return mlxsw_afa_policer_create(mlxsw_afa, fa_index, rate_bytes_ps, burst, extack); } static void mlxsw_afa_policer_put(struct mlxsw_afa *mlxsw_afa, struct mlxsw_afa_policer *policer) { if (!refcount_dec_and_test(&policer->ref_count)) return; mlxsw_afa_policer_destroy(mlxsw_afa, policer); } struct mlxsw_afa_policer_ref { struct mlxsw_afa_resource resource; struct mlxsw_afa_policer *policer; }; static void mlxsw_afa_policer_ref_destroy(struct mlxsw_afa_block *block, struct mlxsw_afa_policer_ref *policer_ref) { mlxsw_afa_resource_del(&policer_ref->resource); mlxsw_afa_policer_put(block->afa, policer_ref->policer); kfree(policer_ref); } static void mlxsw_afa_policer_ref_destructor(struct mlxsw_afa_block *block, struct mlxsw_afa_resource *resource) { struct mlxsw_afa_policer_ref *policer_ref; policer_ref = container_of(resource, struct mlxsw_afa_policer_ref, resource); mlxsw_afa_policer_ref_destroy(block, policer_ref); } static struct mlxsw_afa_policer_ref * mlxsw_afa_policer_ref_create(struct mlxsw_afa_block *block, u32 fa_index, u64 rate_bytes_ps, u32 burst, struct netlink_ext_ack *extack) { struct mlxsw_afa_policer_ref *policer_ref; struct mlxsw_afa_policer *policer; int err; policer_ref = kzalloc(sizeof(*policer_ref), GFP_KERNEL); if (!policer_ref) return ERR_PTR(-ENOMEM); policer = mlxsw_afa_policer_get(block->afa, fa_index, rate_bytes_ps, burst, extack); if (IS_ERR(policer)) { err = PTR_ERR(policer); goto err_policer_get; } policer_ref->policer = policer; policer_ref->resource.destructor = mlxsw_afa_policer_ref_destructor; mlxsw_afa_resource_add(block, &policer_ref->resource); return policer_ref; err_policer_get: kfree(policer_ref); return ERR_PTR(err); } #define MLXSW_AFA_ONE_ACTION_LEN 32 #define MLXSW_AFA_PAYLOAD_OFFSET 4 enum mlxsw_afa_action_type { MLXSW_AFA_ACTION_TYPE_TRAP, MLXSW_AFA_ACTION_TYPE_POLICE, MLXSW_AFA_ACTION_TYPE_OTHER, }; static bool mlxsw_afa_block_need_split(const struct mlxsw_afa_block *block, enum mlxsw_afa_action_type type) { struct mlxsw_afa_set *cur_set = block->cur_set; /* Due to a hardware limitation, police action cannot be in the same * action set with MLXSW_AFA_TRAP_CODE or MLXSW_AFA_TRAPWU_CODE * actions. Work around this limitation by creating a new action set * and place the new action there. */ return (cur_set->has_trap && type == MLXSW_AFA_ACTION_TYPE_POLICE) || (cur_set->has_police && type == MLXSW_AFA_ACTION_TYPE_TRAP); } static char *mlxsw_afa_block_append_action_ext(struct mlxsw_afa_block *block, u8 action_code, u8 action_size, enum mlxsw_afa_action_type type) { char *oneact; char *actions; if (block->finished) return ERR_PTR(-EINVAL); if (block->cur_act_index + action_size > block->afa->max_acts_per_set || mlxsw_afa_block_need_split(block, type)) { struct mlxsw_afa_set *set; /* The appended action won't fit into the current action set, * so create a new set. */ set = mlxsw_afa_set_create(false); if (!set) return ERR_PTR(-ENOBUFS); set->prev = block->cur_set; block->cur_act_index = 0; block->cur_set->next = set; block->cur_set = set; } switch (type) { case MLXSW_AFA_ACTION_TYPE_TRAP: block->cur_set->has_trap = true; break; case MLXSW_AFA_ACTION_TYPE_POLICE: block->cur_set->has_police = true; break; default: break; } actions = block->cur_set->ht_key.enc_actions; oneact = actions + block->cur_act_index * MLXSW_AFA_ONE_ACTION_LEN; block->cur_act_index += action_size; mlxsw_afa_all_action_type_set(oneact, action_code); return oneact + MLXSW_AFA_PAYLOAD_OFFSET; } static char *mlxsw_afa_block_append_action(struct mlxsw_afa_block *block, u8 action_code, u8 action_size) { return mlxsw_afa_block_append_action_ext(block, action_code, action_size, MLXSW_AFA_ACTION_TYPE_OTHER); } /* VLAN Action * ----------- * VLAN action is used for manipulating VLANs. It can be used to implement QinQ, * VLAN translation, change of PCP bits of the VLAN tag, push, pop as swap VLANs * and more. */ #define MLXSW_AFA_VLAN_CODE 0x02 #define MLXSW_AFA_VLAN_SIZE 1 enum mlxsw_afa_vlan_vlan_tag_cmd { MLXSW_AFA_VLAN_VLAN_TAG_CMD_NOP, MLXSW_AFA_VLAN_VLAN_TAG_CMD_PUSH_TAG, MLXSW_AFA_VLAN_VLAN_TAG_CMD_POP_TAG, }; enum mlxsw_afa_vlan_cmd { MLXSW_AFA_VLAN_CMD_NOP, MLXSW_AFA_VLAN_CMD_SET_OUTER, MLXSW_AFA_VLAN_CMD_SET_INNER, MLXSW_AFA_VLAN_CMD_COPY_OUTER_TO_INNER, MLXSW_AFA_VLAN_CMD_COPY_INNER_TO_OUTER, MLXSW_AFA_VLAN_CMD_SWAP, }; /* afa_vlan_vlan_tag_cmd * Tag command: push, pop, nop VLAN header. */ MLXSW_ITEM32(afa, vlan, vlan_tag_cmd, 0x00, 29, 3); /* afa_vlan_vid_cmd */ MLXSW_ITEM32(afa, vlan, vid_cmd, 0x04, 29, 3); /* afa_vlan_vid */ MLXSW_ITEM32(afa, vlan, vid, 0x04, 0, 12); /* afa_vlan_ethertype_cmd */ MLXSW_ITEM32(afa, vlan, ethertype_cmd, 0x08, 29, 3); /* afa_vlan_ethertype * Index to EtherTypes in Switch VLAN EtherType Register (SVER). */ MLXSW_ITEM32(afa, vlan, ethertype, 0x08, 24, 3); /* afa_vlan_pcp_cmd */ MLXSW_ITEM32(afa, vlan, pcp_cmd, 0x08, 13, 3); /* afa_vlan_pcp */ MLXSW_ITEM32(afa, vlan, pcp, 0x08, 8, 3); static inline void mlxsw_afa_vlan_pack(char *payload, enum mlxsw_afa_vlan_vlan_tag_cmd vlan_tag_cmd, enum mlxsw_afa_vlan_cmd vid_cmd, u16 vid, enum mlxsw_afa_vlan_cmd pcp_cmd, u8 pcp, enum mlxsw_afa_vlan_cmd ethertype_cmd, u8 ethertype) { mlxsw_afa_vlan_vlan_tag_cmd_set(payload, vlan_tag_cmd); mlxsw_afa_vlan_vid_cmd_set(payload, vid_cmd); mlxsw_afa_vlan_vid_set(payload, vid); mlxsw_afa_vlan_pcp_cmd_set(payload, pcp_cmd); mlxsw_afa_vlan_pcp_set(payload, pcp); mlxsw_afa_vlan_ethertype_cmd_set(payload, ethertype_cmd); mlxsw_afa_vlan_ethertype_set(payload, ethertype); } int mlxsw_afa_block_append_vlan_modify(struct mlxsw_afa_block *block, u16 vid, u8 pcp, u8 et, struct netlink_ext_ack *extack) { char *act = mlxsw_afa_block_append_action(block, MLXSW_AFA_VLAN_CODE, MLXSW_AFA_VLAN_SIZE); if (IS_ERR(act)) { NL_SET_ERR_MSG_MOD(extack, "Cannot append vlan_modify action"); return PTR_ERR(act); } mlxsw_afa_vlan_pack(act, MLXSW_AFA_VLAN_VLAN_TAG_CMD_NOP, MLXSW_AFA_VLAN_CMD_SET_OUTER, vid, MLXSW_AFA_VLAN_CMD_SET_OUTER, pcp, MLXSW_AFA_VLAN_CMD_SET_OUTER, et); return 0; } EXPORT_SYMBOL(mlxsw_afa_block_append_vlan_modify); /* Trap Action / Trap With Userdef Action * -------------------------------------- * The Trap action enables trapping / mirroring packets to the CPU * as well as discarding packets. * The ACL Trap / Discard separates the forward/discard control from CPU * trap control. In addition, the Trap / Discard action enables activating * SPAN (port mirroring). * * The Trap with userdef action has the same functionality as * the Trap action with addition of user defined value that can be set * and used by higher layer applications. */ #define MLXSW_AFA_TRAP_CODE 0x03 #define MLXSW_AFA_TRAP_SIZE 1 #define MLXSW_AFA_TRAPWU_CODE 0x04 #define MLXSW_AFA_TRAPWU_SIZE 2 enum mlxsw_afa_trap_trap_action { MLXSW_AFA_TRAP_TRAP_ACTION_NOP = 0, MLXSW_AFA_TRAP_TRAP_ACTION_TRAP = 2, }; /* afa_trap_trap_action * Trap Action. */ MLXSW_ITEM32(afa, trap, trap_action, 0x00, 24, 4); enum mlxsw_afa_trap_forward_action { MLXSW_AFA_TRAP_FORWARD_ACTION_FORWARD = 1, MLXSW_AFA_TRAP_FORWARD_ACTION_DISCARD = 3, }; /* afa_trap_forward_action * Forward Action. */ MLXSW_ITEM32(afa, trap, forward_action, 0x00, 0, 4); /* afa_trap_trap_id * Trap ID to configure. */ MLXSW_ITEM32(afa, trap, trap_id, 0x04, 0, 9); /* afa_trap_mirror_agent * Mirror agent. */ MLXSW_ITEM32(afa, trap, mirror_agent, 0x08, 29, 3); /* afa_trap_mirror_enable * Mirror enable. */ MLXSW_ITEM32(afa, trap, mirror_enable, 0x08, 24, 1); /* user_def_val * Value for the SW usage. Can be used to pass information of which * rule has caused a trap. This may be overwritten by later traps. * This field does a set on the packet's user_def_val only if this * is the first trap_id or if the trap_id has replaced the previous * packet's trap_id. */ MLXSW_ITEM32(afa, trap, user_def_val, 0x0C, 0, 20); static inline void mlxsw_afa_trap_pack(char *payload, enum mlxsw_afa_trap_trap_action trap_action, enum mlxsw_afa_trap_forward_action forward_action, u16 trap_id) { mlxsw_afa_trap_trap_action_set(payload, trap_action); mlxsw_afa_trap_forward_action_set(payload, forward_action); mlxsw_afa_trap_trap_id_set(payload, trap_id); } static inline void mlxsw_afa_trapwu_pack(char *payload, enum mlxsw_afa_trap_trap_action trap_action, enum mlxsw_afa_trap_forward_action forward_action, u16 trap_id, u32 user_def_val) { mlxsw_afa_trap_pack(payload, trap_action, forward_action, trap_id); mlxsw_afa_trap_user_def_val_set(payload, user_def_val); } static inline void mlxsw_afa_trap_mirror_pack(char *payload, bool mirror_enable, u8 mirror_agent) { mlxsw_afa_trap_mirror_enable_set(payload, mirror_enable); mlxsw_afa_trap_mirror_agent_set(payload, mirror_agent); } static char *mlxsw_afa_block_append_action_trap(struct mlxsw_afa_block *block, u8 action_code, u8 action_size) { return mlxsw_afa_block_append_action_ext(block, action_code, action_size, MLXSW_AFA_ACTION_TYPE_TRAP); } static int mlxsw_afa_block_append_drop_plain(struct mlxsw_afa_block *block, bool ingress) { char *act = mlxsw_afa_block_append_action_trap(block, MLXSW_AFA_TRAP_CODE, MLXSW_AFA_TRAP_SIZE); if (IS_ERR(act)) return PTR_ERR(act); mlxsw_afa_trap_pack(act, MLXSW_AFA_TRAP_TRAP_ACTION_TRAP, MLXSW_AFA_TRAP_FORWARD_ACTION_DISCARD, ingress ? MLXSW_TRAP_ID_DISCARD_INGRESS_ACL : MLXSW_TRAP_ID_DISCARD_EGRESS_ACL); return 0; } static int mlxsw_afa_block_append_drop_with_cookie(struct mlxsw_afa_block *block, bool ingress, const struct flow_action_cookie *fa_cookie, struct netlink_ext_ack *extack) { struct mlxsw_afa_cookie_ref *cookie_ref; u32 cookie_index; char *act; int err; cookie_ref = mlxsw_afa_cookie_ref_create(block, fa_cookie); if (IS_ERR(cookie_ref)) { NL_SET_ERR_MSG_MOD(extack, "Cannot create cookie for drop action"); return PTR_ERR(cookie_ref); } cookie_index = cookie_ref->cookie->cookie_index; act = mlxsw_afa_block_append_action_trap(block, MLXSW_AFA_TRAPWU_CODE, MLXSW_AFA_TRAPWU_SIZE); if (IS_ERR(act)) { NL_SET_ERR_MSG_MOD(extack, "Cannot append drop with cookie action"); err = PTR_ERR(act); goto err_append_action; } mlxsw_afa_trapwu_pack(act, MLXSW_AFA_TRAP_TRAP_ACTION_TRAP, MLXSW_AFA_TRAP_FORWARD_ACTION_DISCARD, ingress ? MLXSW_TRAP_ID_DISCARD_INGRESS_ACL : MLXSW_TRAP_ID_DISCARD_EGRESS_ACL, cookie_index); return 0; err_append_action: mlxsw_afa_cookie_ref_destroy(block, cookie_ref); return err; } int mlxsw_afa_block_append_drop(struct mlxsw_afa_block *block, bool ingress, const struct flow_action_cookie *fa_cookie, struct netlink_ext_ack *extack) { return fa_cookie ? mlxsw_afa_block_append_drop_with_cookie(block, ingress, fa_cookie, extack) : mlxsw_afa_block_append_drop_plain(block, ingress); } EXPORT_SYMBOL(mlxsw_afa_block_append_drop); int mlxsw_afa_block_append_trap(struct mlxsw_afa_block *block, u16 trap_id) { char *act = mlxsw_afa_block_append_action_trap(block, MLXSW_AFA_TRAP_CODE, MLXSW_AFA_TRAP_SIZE); if (IS_ERR(act)) return PTR_ERR(act); mlxsw_afa_trap_pack(act, MLXSW_AFA_TRAP_TRAP_ACTION_TRAP, MLXSW_AFA_TRAP_FORWARD_ACTION_DISCARD, trap_id); return 0; } EXPORT_SYMBOL(mlxsw_afa_block_append_trap); int mlxsw_afa_block_append_trap_and_forward(struct mlxsw_afa_block *block, u16 trap_id) { char *act = mlxsw_afa_block_append_action_trap(block, MLXSW_AFA_TRAP_CODE, MLXSW_AFA_TRAP_SIZE); if (IS_ERR(act)) return PTR_ERR(act); mlxsw_afa_trap_pack(act, MLXSW_AFA_TRAP_TRAP_ACTION_TRAP, MLXSW_AFA_TRAP_FORWARD_ACTION_FORWARD, trap_id); return 0; } EXPORT_SYMBOL(mlxsw_afa_block_append_trap_and_forward); struct mlxsw_afa_mirror { struct mlxsw_afa_resource resource; int span_id; u16 local_in_port; bool ingress; }; static void mlxsw_afa_mirror_destroy(struct mlxsw_afa_block *block, struct mlxsw_afa_mirror *mirror) { mlxsw_afa_resource_del(&mirror->resource); block->afa->ops->mirror_del(block->afa->ops_priv, mirror->local_in_port, mirror->span_id, mirror->ingress); kfree(mirror); } static void mlxsw_afa_mirror_destructor(struct mlxsw_afa_block *block, struct mlxsw_afa_resource *resource) { struct mlxsw_afa_mirror *mirror; mirror = container_of(resource, struct mlxsw_afa_mirror, resource); mlxsw_afa_mirror_destroy(block, mirror); } static struct mlxsw_afa_mirror * mlxsw_afa_mirror_create(struct mlxsw_afa_block *block, u16 local_in_port, const struct net_device *out_dev, bool ingress) { struct mlxsw_afa_mirror *mirror; int err; mirror = kzalloc(sizeof(*mirror), GFP_KERNEL); if (!mirror) return ERR_PTR(-ENOMEM); err = block->afa->ops->mirror_add(block->afa->ops_priv, local_in_port, out_dev, ingress, &mirror->span_id); if (err) goto err_mirror_add; mirror->ingress = ingress; mirror->local_in_port = local_in_port; mirror->resource.destructor = mlxsw_afa_mirror_destructor; mlxsw_afa_resource_add(block, &mirror->resource); return mirror; err_mirror_add: kfree(mirror); return ERR_PTR(err); } static int mlxsw_afa_block_append_allocated_mirror(struct mlxsw_afa_block *block, u8 mirror_agent) { char *act = mlxsw_afa_block_append_action_trap(block, MLXSW_AFA_TRAP_CODE, MLXSW_AFA_TRAP_SIZE); if (IS_ERR(act)) return PTR_ERR(act); mlxsw_afa_trap_pack(act, MLXSW_AFA_TRAP_TRAP_ACTION_NOP, MLXSW_AFA_TRAP_FORWARD_ACTION_FORWARD, 0); mlxsw_afa_trap_mirror_pack(act, true, mirror_agent); return 0; } int mlxsw_afa_block_append_mirror(struct mlxsw_afa_block *block, u16 local_in_port, const struct net_device *out_dev, bool ingress, struct netlink_ext_ack *extack) { struct mlxsw_afa_mirror *mirror; int err; mirror = mlxsw_afa_mirror_create(block, local_in_port, out_dev, ingress); if (IS_ERR(mirror)) { NL_SET_ERR_MSG_MOD(extack, "Cannot create mirror action"); return PTR_ERR(mirror); } err = mlxsw_afa_block_append_allocated_mirror(block, mirror->span_id); if (err) { NL_SET_ERR_MSG_MOD(extack, "Cannot append mirror action"); goto err_append_allocated_mirror; } return 0; err_append_allocated_mirror: mlxsw_afa_mirror_destroy(block, mirror); return err; } EXPORT_SYMBOL(mlxsw_afa_block_append_mirror); /* QoS Action * ---------- * The QOS_ACTION is used for manipulating the QoS attributes of a packet. It * can be used to change the DCSP, ECN, Color and Switch Priority of the packet. * Note that PCP field can be changed using the VLAN action. */ #define MLXSW_AFA_QOS_CODE 0x06 #define MLXSW_AFA_QOS_SIZE 1 enum mlxsw_afa_qos_ecn_cmd { /* Do nothing */ MLXSW_AFA_QOS_ECN_CMD_NOP, /* Set ECN to afa_qos_ecn */ MLXSW_AFA_QOS_ECN_CMD_SET, }; /* afa_qos_ecn_cmd */ MLXSW_ITEM32(afa, qos, ecn_cmd, 0x04, 29, 3); /* afa_qos_ecn * ECN value. */ MLXSW_ITEM32(afa, qos, ecn, 0x04, 24, 2); enum mlxsw_afa_qos_dscp_cmd { /* Do nothing */ MLXSW_AFA_QOS_DSCP_CMD_NOP, /* Set DSCP 3 LSB bits according to dscp[2:0] */ MLXSW_AFA_QOS_DSCP_CMD_SET_3LSB, /* Set DSCP 3 MSB bits according to dscp[5:3] */ MLXSW_AFA_QOS_DSCP_CMD_SET_3MSB, /* Set DSCP 6 bits according to dscp[5:0] */ MLXSW_AFA_QOS_DSCP_CMD_SET_ALL, }; /* afa_qos_dscp_cmd * DSCP command. */ MLXSW_ITEM32(afa, qos, dscp_cmd, 0x04, 14, 2); /* afa_qos_dscp * DSCP value. */ MLXSW_ITEM32(afa, qos, dscp, 0x04, 0, 6); enum mlxsw_afa_qos_switch_prio_cmd { /* Do nothing */ MLXSW_AFA_QOS_SWITCH_PRIO_CMD_NOP, /* Set Switch Priority to afa_qos_switch_prio */ MLXSW_AFA_QOS_SWITCH_PRIO_CMD_SET, }; /* afa_qos_switch_prio_cmd */ MLXSW_ITEM32(afa, qos, switch_prio_cmd, 0x08, 14, 2); /* afa_qos_switch_prio * Switch Priority. */ MLXSW_ITEM32(afa, qos, switch_prio, 0x08, 0, 4); enum mlxsw_afa_qos_dscp_rw { MLXSW_AFA_QOS_DSCP_RW_PRESERVE, MLXSW_AFA_QOS_DSCP_RW_SET, MLXSW_AFA_QOS_DSCP_RW_CLEAR, }; /* afa_qos_dscp_rw * DSCP Re-write Enable. Controlling the rewrite_enable for DSCP. */ MLXSW_ITEM32(afa, qos, dscp_rw, 0x0C, 30, 2); static inline void mlxsw_afa_qos_ecn_pack(char *payload, enum mlxsw_afa_qos_ecn_cmd ecn_cmd, u8 ecn) { mlxsw_afa_qos_ecn_cmd_set(payload, ecn_cmd); mlxsw_afa_qos_ecn_set(payload, ecn); } static inline void mlxsw_afa_qos_dscp_pack(char *payload, enum mlxsw_afa_qos_dscp_cmd dscp_cmd, u8 dscp) { mlxsw_afa_qos_dscp_cmd_set(payload, dscp_cmd); mlxsw_afa_qos_dscp_set(payload, dscp); } static inline void mlxsw_afa_qos_switch_prio_pack(char *payload, enum mlxsw_afa_qos_switch_prio_cmd prio_cmd, u8 prio) { mlxsw_afa_qos_switch_prio_cmd_set(payload, prio_cmd); mlxsw_afa_qos_switch_prio_set(payload, prio); } static int __mlxsw_afa_block_append_qos_dsfield(struct mlxsw_afa_block *block, bool set_dscp, u8 dscp, bool set_ecn, u8 ecn, struct netlink_ext_ack *extack) { char *act = mlxsw_afa_block_append_action(block, MLXSW_AFA_QOS_CODE, MLXSW_AFA_QOS_SIZE); if (IS_ERR(act)) { NL_SET_ERR_MSG_MOD(extack, "Cannot append QOS action"); return PTR_ERR(act); } if (set_ecn) mlxsw_afa_qos_ecn_pack(act, MLXSW_AFA_QOS_ECN_CMD_SET, ecn); if (set_dscp) { mlxsw_afa_qos_dscp_pack(act, MLXSW_AFA_QOS_DSCP_CMD_SET_ALL, dscp); mlxsw_afa_qos_dscp_rw_set(act, MLXSW_AFA_QOS_DSCP_RW_CLEAR); } return 0; } int mlxsw_afa_block_append_qos_dsfield(struct mlxsw_afa_block *block, u8 dsfield, struct netlink_ext_ack *extack) { return __mlxsw_afa_block_append_qos_dsfield(block, true, dsfield >> 2, true, dsfield & 0x03, extack); } EXPORT_SYMBOL(mlxsw_afa_block_append_qos_dsfield); int mlxsw_afa_block_append_qos_dscp(struct mlxsw_afa_block *block, u8 dscp, struct netlink_ext_ack *extack) { return __mlxsw_afa_block_append_qos_dsfield(block, true, dscp, false, 0, extack); } EXPORT_SYMBOL(mlxsw_afa_block_append_qos_dscp); int mlxsw_afa_block_append_qos_ecn(struct mlxsw_afa_block *block, u8 ecn, struct netlink_ext_ack *extack) { return __mlxsw_afa_block_append_qos_dsfield(block, false, 0, true, ecn, extack); } EXPORT_SYMBOL(mlxsw_afa_block_append_qos_ecn); int mlxsw_afa_block_append_qos_switch_prio(struct mlxsw_afa_block *block, u8 prio, struct netlink_ext_ack *extack) { char *act = mlxsw_afa_block_append_action(block, MLXSW_AFA_QOS_CODE, MLXSW_AFA_QOS_SIZE); if (IS_ERR(act)) { NL_SET_ERR_MSG_MOD(extack, "Cannot append QOS action"); return PTR_ERR(act); } mlxsw_afa_qos_switch_prio_pack(act, MLXSW_AFA_QOS_SWITCH_PRIO_CMD_SET, prio); return 0; } EXPORT_SYMBOL(mlxsw_afa_block_append_qos_switch_prio); /* Forwarding Action * ----------------- * Forwarding Action can be used to implement Policy Based Switching (PBS) * as well as OpenFlow related "Output" action. */ #define MLXSW_AFA_FORWARD_CODE 0x07 #define MLXSW_AFA_FORWARD_SIZE 1 enum mlxsw_afa_forward_type { /* PBS, Policy Based Switching */ MLXSW_AFA_FORWARD_TYPE_PBS, /* Output, OpenFlow output type */ MLXSW_AFA_FORWARD_TYPE_OUTPUT, }; /* afa_forward_type */ MLXSW_ITEM32(afa, forward, type, 0x00, 24, 2); /* afa_forward_pbs_ptr * A pointer to the PBS entry configured by PPBS register. * Reserved when in_port is set. */ MLXSW_ITEM32(afa, forward, pbs_ptr, 0x08, 0, 24); /* afa_forward_in_port * Packet is forwarded back to the ingress port. */ MLXSW_ITEM32(afa, forward, in_port, 0x0C, 0, 1); static inline void mlxsw_afa_forward_pack(char *payload, enum mlxsw_afa_forward_type type, u32 pbs_ptr, bool in_port) { mlxsw_afa_forward_type_set(payload, type); mlxsw_afa_forward_pbs_ptr_set(payload, pbs_ptr); mlxsw_afa_forward_in_port_set(payload, in_port); } int mlxsw_afa_block_append_fwd(struct mlxsw_afa_block *block, u16 local_port, bool in_port, struct netlink_ext_ack *extack) { struct mlxsw_afa_fwd_entry_ref *fwd_entry_ref; u32 kvdl_index; char *act; int err; if (in_port) { NL_SET_ERR_MSG_MOD(extack, "Forwarding to ingress port is not supported"); return -EOPNOTSUPP; } fwd_entry_ref = mlxsw_afa_fwd_entry_ref_create(block, local_port); if (IS_ERR(fwd_entry_ref)) { NL_SET_ERR_MSG_MOD(extack, "Cannot create forward action"); return PTR_ERR(fwd_entry_ref); } kvdl_index = fwd_entry_ref->fwd_entry->kvdl_index; act = mlxsw_afa_block_append_action(block, MLXSW_AFA_FORWARD_CODE, MLXSW_AFA_FORWARD_SIZE); if (IS_ERR(act)) { NL_SET_ERR_MSG_MOD(extack, "Cannot append forward action"); err = PTR_ERR(act); goto err_append_action; } mlxsw_afa_forward_pack(act, MLXSW_AFA_FORWARD_TYPE_PBS, kvdl_index, in_port); return 0; err_append_action: mlxsw_afa_fwd_entry_ref_destroy(block, fwd_entry_ref); return err; } EXPORT_SYMBOL(mlxsw_afa_block_append_fwd); /* Policing and Counting Action * ---------------------------- * Policing and Counting action is used for binding policer and counter * to ACL rules. */ #define MLXSW_AFA_POLCNT_CODE 0x08 #define MLXSW_AFA_POLCNT_SIZE 1 enum { MLXSW_AFA_POLCNT_COUNTER, MLXSW_AFA_POLCNT_POLICER, }; /* afa_polcnt_c_p * Counter or policer. * Indicates whether the action binds a policer or a counter to the flow. * 0: Counter * 1: Policer */ MLXSW_ITEM32(afa, polcnt, c_p, 0x00, 31, 1); enum mlxsw_afa_polcnt_counter_set_type { /* No count */ MLXSW_AFA_POLCNT_COUNTER_SET_TYPE_NO_COUNT = 0x00, /* Count packets and bytes */ MLXSW_AFA_POLCNT_COUNTER_SET_TYPE_PACKETS_BYTES = 0x03, /* Count only packets */ MLXSW_AFA_POLCNT_COUNTER_SET_TYPE_PACKETS = 0x05, }; /* afa_polcnt_counter_set_type * Counter set type for flow counters. */ MLXSW_ITEM32(afa, polcnt, counter_set_type, 0x04, 24, 8); /* afa_polcnt_counter_index * Counter index for flow counters. */ MLXSW_ITEM32(afa, polcnt, counter_index, 0x04, 0, 24); /* afa_polcnt_pid * Policer ID. * Reserved when c_p = 0 */ MLXSW_ITEM32(afa, polcnt, pid, 0x08, 0, 14); static inline void mlxsw_afa_polcnt_pack(char *payload, enum mlxsw_afa_polcnt_counter_set_type set_type, u32 counter_index) { mlxsw_afa_polcnt_c_p_set(payload, MLXSW_AFA_POLCNT_COUNTER); mlxsw_afa_polcnt_counter_set_type_set(payload, set_type); mlxsw_afa_polcnt_counter_index_set(payload, counter_index); } static void mlxsw_afa_polcnt_policer_pack(char *payload, u16 policer_index) { mlxsw_afa_polcnt_c_p_set(payload, MLXSW_AFA_POLCNT_POLICER); mlxsw_afa_polcnt_pid_set(payload, policer_index); } int mlxsw_afa_block_append_allocated_counter(struct mlxsw_afa_block *block, u32 counter_index) { char *act = mlxsw_afa_block_append_action(block, MLXSW_AFA_POLCNT_CODE, MLXSW_AFA_POLCNT_SIZE); if (IS_ERR(act)) return PTR_ERR(act); mlxsw_afa_polcnt_pack(act, MLXSW_AFA_POLCNT_COUNTER_SET_TYPE_PACKETS_BYTES, counter_index); return 0; } EXPORT_SYMBOL(mlxsw_afa_block_append_allocated_counter); int mlxsw_afa_block_append_counter(struct mlxsw_afa_block *block, u32 *p_counter_index, struct netlink_ext_ack *extack) { struct mlxsw_afa_counter *counter; u32 counter_index; int err; counter = mlxsw_afa_counter_create(block); if (IS_ERR(counter)) { NL_SET_ERR_MSG_MOD(extack, "Cannot create count action"); return PTR_ERR(counter); } counter_index = counter->counter_index; err = mlxsw_afa_block_append_allocated_counter(block, counter_index); if (err) { NL_SET_ERR_MSG_MOD(extack, "Cannot append count action"); goto err_append_allocated_counter; } if (p_counter_index) *p_counter_index = counter_index; return 0; err_append_allocated_counter: mlxsw_afa_counter_destroy(block, counter); return err; } EXPORT_SYMBOL(mlxsw_afa_block_append_counter); int mlxsw_afa_block_append_police(struct mlxsw_afa_block *block, u32 fa_index, u64 rate_bytes_ps, u32 burst, u16 *p_policer_index, struct netlink_ext_ack *extack) { struct mlxsw_afa_policer_ref *policer_ref; char *act; int err; policer_ref = mlxsw_afa_policer_ref_create(block, fa_index, rate_bytes_ps, burst, extack); if (IS_ERR(policer_ref)) return PTR_ERR(policer_ref); *p_policer_index = policer_ref->policer->policer_index; act = mlxsw_afa_block_append_action_ext(block, MLXSW_AFA_POLCNT_CODE, MLXSW_AFA_POLCNT_SIZE, MLXSW_AFA_ACTION_TYPE_POLICE); if (IS_ERR(act)) { NL_SET_ERR_MSG_MOD(extack, "Cannot append police action"); err = PTR_ERR(act); goto err_append_action; } mlxsw_afa_polcnt_policer_pack(act, *p_policer_index); return 0; err_append_action: mlxsw_afa_policer_ref_destroy(block, policer_ref); return err; } EXPORT_SYMBOL(mlxsw_afa_block_append_police); /* Virtual Router and Forwarding Domain Action * ------------------------------------------- * Virtual Switch action is used for manipulate the Virtual Router (VR), * MPLS label space and the Forwarding Identifier (FID). */ #define MLXSW_AFA_VIRFWD_CODE 0x0E #define MLXSW_AFA_VIRFWD_SIZE 1 enum mlxsw_afa_virfwd_fid_cmd { /* Do nothing */ MLXSW_AFA_VIRFWD_FID_CMD_NOOP, /* Set the Forwarding Identifier (FID) to fid */ MLXSW_AFA_VIRFWD_FID_CMD_SET, }; /* afa_virfwd_fid_cmd */ MLXSW_ITEM32(afa, virfwd, fid_cmd, 0x08, 29, 3); /* afa_virfwd_fid * The FID value. */ MLXSW_ITEM32(afa, virfwd, fid, 0x08, 0, 16); static inline void mlxsw_afa_virfwd_pack(char *payload, enum mlxsw_afa_virfwd_fid_cmd fid_cmd, u16 fid) { mlxsw_afa_virfwd_fid_cmd_set(payload, fid_cmd); mlxsw_afa_virfwd_fid_set(payload, fid); } int mlxsw_afa_block_append_fid_set(struct mlxsw_afa_block *block, u16 fid, struct netlink_ext_ack *extack) { char *act = mlxsw_afa_block_append_action(block, MLXSW_AFA_VIRFWD_CODE, MLXSW_AFA_VIRFWD_SIZE); if (IS_ERR(act)) { NL_SET_ERR_MSG_MOD(extack, "Cannot append fid_set action"); return PTR_ERR(act); } mlxsw_afa_virfwd_pack(act, MLXSW_AFA_VIRFWD_FID_CMD_SET, fid); return 0; } EXPORT_SYMBOL(mlxsw_afa_block_append_fid_set); /* Ignore Action * ------------- * The ignore action is used to ignore basic switching functions such as * learning on a per-packet basis. */ #define MLXSW_AFA_IGNORE_CODE 0x0F #define MLXSW_AFA_IGNORE_SIZE 1 /* afa_ignore_disable_learning * Disable learning on ingress. */ MLXSW_ITEM32(afa, ignore, disable_learning, 0x00, 29, 1); /* afa_ignore_disable_security * Disable security lookup on ingress. * Reserved when Spectrum-1. */ MLXSW_ITEM32(afa, ignore, disable_security, 0x00, 28, 1); static void mlxsw_afa_ignore_pack(char *payload, bool disable_learning, bool disable_security) { mlxsw_afa_ignore_disable_learning_set(payload, disable_learning); mlxsw_afa_ignore_disable_security_set(payload, disable_security); } int mlxsw_afa_block_append_ignore(struct mlxsw_afa_block *block, bool disable_learning, bool disable_security) { char *act = mlxsw_afa_block_append_action(block, MLXSW_AFA_IGNORE_CODE, MLXSW_AFA_IGNORE_SIZE); if (IS_ERR(act)) return PTR_ERR(act); mlxsw_afa_ignore_pack(act, disable_learning, disable_security); return 0; } EXPORT_SYMBOL(mlxsw_afa_block_append_ignore); /* MC Routing Action * ----------------- * The Multicast router action. Can be used by RMFT_V2 - Router Multicast * Forwarding Table Version 2 Register. */ #define MLXSW_AFA_MCROUTER_CODE 0x10 #define MLXSW_AFA_MCROUTER_SIZE 2 enum mlxsw_afa_mcrouter_rpf_action { MLXSW_AFA_MCROUTER_RPF_ACTION_NOP, MLXSW_AFA_MCROUTER_RPF_ACTION_TRAP, MLXSW_AFA_MCROUTER_RPF_ACTION_DISCARD_ERROR, }; /* afa_mcrouter_rpf_action */ MLXSW_ITEM32(afa, mcrouter, rpf_action, 0x00, 28, 3); /* afa_mcrouter_expected_irif */ MLXSW_ITEM32(afa, mcrouter, expected_irif, 0x00, 0, 16); /* afa_mcrouter_min_mtu */ MLXSW_ITEM32(afa, mcrouter, min_mtu, 0x08, 0, 16); enum mlxsw_afa_mrouter_vrmid { MLXSW_AFA_MCROUTER_VRMID_INVALID, MLXSW_AFA_MCROUTER_VRMID_VALID }; /* afa_mcrouter_vrmid * Valid RMID: rigr_rmid_index is used as RMID */ MLXSW_ITEM32(afa, mcrouter, vrmid, 0x0C, 31, 1); /* afa_mcrouter_rigr_rmid_index * When the vrmid field is set to invalid, the field is used as pointer to * Router Interface Group (RIGR) Table in the KVD linear. * When the vrmid is set to valid, the field is used as RMID index, ranged * from 0 to max_mid - 1. The index is to the Port Group Table. */ MLXSW_ITEM32(afa, mcrouter, rigr_rmid_index, 0x0C, 0, 24); static inline void mlxsw_afa_mcrouter_pack(char *payload, enum mlxsw_afa_mcrouter_rpf_action rpf_action, u16 expected_irif, u16 min_mtu, enum mlxsw_afa_mrouter_vrmid vrmid, u32 rigr_rmid_index) { mlxsw_afa_mcrouter_rpf_action_set(payload, rpf_action); mlxsw_afa_mcrouter_expected_irif_set(payload, expected_irif); mlxsw_afa_mcrouter_min_mtu_set(payload, min_mtu); mlxsw_afa_mcrouter_vrmid_set(payload, vrmid); mlxsw_afa_mcrouter_rigr_rmid_index_set(payload, rigr_rmid_index); } int mlxsw_afa_block_append_mcrouter(struct mlxsw_afa_block *block, u16 expected_irif, u16 min_mtu, bool rmid_valid, u32 kvdl_index) { char *act = mlxsw_afa_block_append_action(block, MLXSW_AFA_MCROUTER_CODE, MLXSW_AFA_MCROUTER_SIZE); if (IS_ERR(act)) return PTR_ERR(act); mlxsw_afa_mcrouter_pack(act, MLXSW_AFA_MCROUTER_RPF_ACTION_TRAP, expected_irif, min_mtu, rmid_valid, kvdl_index); return 0; } EXPORT_SYMBOL(mlxsw_afa_block_append_mcrouter); /* SIP DIP Action * -------------- * The SIP_DIP_ACTION is used for modifying the SIP and DIP fields of the * packet, e.g. for NAT. The L3 checksum is updated. Also, if the L4 is TCP or * if the L4 is UDP and the checksum field is not zero, then the L4 checksum is * updated. */ #define MLXSW_AFA_IP_CODE 0x11 #define MLXSW_AFA_IP_SIZE 2 enum mlxsw_afa_ip_s_d { /* ip refers to dip */ MLXSW_AFA_IP_S_D_DIP, /* ip refers to sip */ MLXSW_AFA_IP_S_D_SIP, }; /* afa_ip_s_d * Source or destination. */ MLXSW_ITEM32(afa, ip, s_d, 0x00, 31, 1); enum mlxsw_afa_ip_m_l { /* LSB: ip[63:0] refers to ip[63:0] */ MLXSW_AFA_IP_M_L_LSB, /* MSB: ip[63:0] refers to ip[127:64] */ MLXSW_AFA_IP_M_L_MSB, }; /* afa_ip_m_l * MSB or LSB. */ MLXSW_ITEM32(afa, ip, m_l, 0x00, 30, 1); /* afa_ip_ip_63_32 * Bits [63:32] in the IP address to change to. */ MLXSW_ITEM32(afa, ip, ip_63_32, 0x08, 0, 32); /* afa_ip_ip_31_0 * Bits [31:0] in the IP address to change to. */ MLXSW_ITEM32(afa, ip, ip_31_0, 0x0C, 0, 32); static void mlxsw_afa_ip_pack(char *payload, enum mlxsw_afa_ip_s_d s_d, enum mlxsw_afa_ip_m_l m_l, u32 ip_31_0, u32 ip_63_32) { mlxsw_afa_ip_s_d_set(payload, s_d); mlxsw_afa_ip_m_l_set(payload, m_l); mlxsw_afa_ip_ip_31_0_set(payload, ip_31_0); mlxsw_afa_ip_ip_63_32_set(payload, ip_63_32); } int mlxsw_afa_block_append_ip(struct mlxsw_afa_block *block, bool is_dip, bool is_lsb, u32 val_31_0, u32 val_63_32, struct netlink_ext_ack *extack) { enum mlxsw_afa_ip_s_d s_d = is_dip ? MLXSW_AFA_IP_S_D_DIP : MLXSW_AFA_IP_S_D_SIP; enum mlxsw_afa_ip_m_l m_l = is_lsb ? MLXSW_AFA_IP_M_L_LSB : MLXSW_AFA_IP_M_L_MSB; char *act = mlxsw_afa_block_append_action(block, MLXSW_AFA_IP_CODE, MLXSW_AFA_IP_SIZE); if (IS_ERR(act)) { NL_SET_ERR_MSG_MOD(extack, "Cannot append IP action"); return PTR_ERR(act); } mlxsw_afa_ip_pack(act, s_d, m_l, val_31_0, val_63_32); return 0; } EXPORT_SYMBOL(mlxsw_afa_block_append_ip); /* L4 Port Action * -------------- * The L4_PORT_ACTION is used for modifying the sport and dport fields of the packet, e.g. for NAT. * If (the L4 is TCP) or if (the L4 is UDP and checksum field!=0) then the L4 checksum is updated. */ #define MLXSW_AFA_L4PORT_CODE 0x12 #define MLXSW_AFA_L4PORT_SIZE 1 enum mlxsw_afa_l4port_s_d { /* configure src_l4_port */ MLXSW_AFA_L4PORT_S_D_SRC, /* configure dst_l4_port */ MLXSW_AFA_L4PORT_S_D_DST, }; /* afa_l4port_s_d * Source or destination. */ MLXSW_ITEM32(afa, l4port, s_d, 0x00, 31, 1); /* afa_l4port_l4_port * Number of port to change to. */ MLXSW_ITEM32(afa, l4port, l4_port, 0x08, 0, 16); static void mlxsw_afa_l4port_pack(char *payload, enum mlxsw_afa_l4port_s_d s_d, u16 l4_port) { mlxsw_afa_l4port_s_d_set(payload, s_d); mlxsw_afa_l4port_l4_port_set(payload, l4_port); } int mlxsw_afa_block_append_l4port(struct mlxsw_afa_block *block, bool is_dport, u16 l4_port, struct netlink_ext_ack *extack) { enum mlxsw_afa_l4port_s_d s_d = is_dport ? MLXSW_AFA_L4PORT_S_D_DST : MLXSW_AFA_L4PORT_S_D_SRC; char *act = mlxsw_afa_block_append_action(block, MLXSW_AFA_L4PORT_CODE, MLXSW_AFA_L4PORT_SIZE); if (IS_ERR(act)) { NL_SET_ERR_MSG_MOD(extack, "Cannot append L4_PORT action"); return PTR_ERR(act); } mlxsw_afa_l4port_pack(act, s_d, l4_port); return 0; } EXPORT_SYMBOL(mlxsw_afa_block_append_l4port); /* Mirror Sampler Action * --------------------- * The SAMPLER_ACTION is used to mirror packets with a probability (sampling). */ #define MLXSW_AFA_SAMPLER_CODE 0x13 #define MLXSW_AFA_SAMPLER_SIZE 1 /* afa_sampler_mirror_agent * Mirror (SPAN) agent. */ MLXSW_ITEM32(afa, sampler, mirror_agent, 0x04, 0, 3); #define MLXSW_AFA_SAMPLER_RATE_MAX (BIT(24) - 1) /* afa_sampler_mirror_probability_rate * Mirroring probability. * Valid values are 1 to 2^24 - 1 */ MLXSW_ITEM32(afa, sampler, mirror_probability_rate, 0x08, 0, 24); static void mlxsw_afa_sampler_pack(char *payload, u8 mirror_agent, u32 rate) { mlxsw_afa_sampler_mirror_agent_set(payload, mirror_agent); mlxsw_afa_sampler_mirror_probability_rate_set(payload, rate); } struct mlxsw_afa_sampler { struct mlxsw_afa_resource resource; int span_id; u16 local_port; bool ingress; }; static void mlxsw_afa_sampler_destroy(struct mlxsw_afa_block *block, struct mlxsw_afa_sampler *sampler) { mlxsw_afa_resource_del(&sampler->resource); block->afa->ops->sampler_del(block->afa->ops_priv, sampler->local_port, sampler->span_id, sampler->ingress); kfree(sampler); } static void mlxsw_afa_sampler_destructor(struct mlxsw_afa_block *block, struct mlxsw_afa_resource *resource) { struct mlxsw_afa_sampler *sampler; sampler = container_of(resource, struct mlxsw_afa_sampler, resource); mlxsw_afa_sampler_destroy(block, sampler); } static struct mlxsw_afa_sampler * mlxsw_afa_sampler_create(struct mlxsw_afa_block *block, u16 local_port, struct psample_group *psample_group, u32 rate, u32 trunc_size, bool truncate, bool ingress, struct netlink_ext_ack *extack) { struct mlxsw_afa_sampler *sampler; int err; sampler = kzalloc(sizeof(*sampler), GFP_KERNEL); if (!sampler) return ERR_PTR(-ENOMEM); err = block->afa->ops->sampler_add(block->afa->ops_priv, local_port, psample_group, rate, trunc_size, truncate, ingress, &sampler->span_id, extack); if (err) goto err_sampler_add; sampler->ingress = ingress; sampler->local_port = local_port; sampler->resource.destructor = mlxsw_afa_sampler_destructor; mlxsw_afa_resource_add(block, &sampler->resource); return sampler; err_sampler_add: kfree(sampler); return ERR_PTR(err); } static int mlxsw_afa_block_append_allocated_sampler(struct mlxsw_afa_block *block, u8 mirror_agent, u32 rate) { char *act = mlxsw_afa_block_append_action(block, MLXSW_AFA_SAMPLER_CODE, MLXSW_AFA_SAMPLER_SIZE); if (IS_ERR(act)) return PTR_ERR(act); mlxsw_afa_sampler_pack(act, mirror_agent, rate); return 0; } int mlxsw_afa_block_append_sampler(struct mlxsw_afa_block *block, u16 local_port, struct psample_group *psample_group, u32 rate, u32 trunc_size, bool truncate, bool ingress, struct netlink_ext_ack *extack) { struct mlxsw_afa_sampler *sampler; int err; if (rate > MLXSW_AFA_SAMPLER_RATE_MAX) { NL_SET_ERR_MSG_MOD(extack, "Sampling rate is too high"); return -EINVAL; } sampler = mlxsw_afa_sampler_create(block, local_port, psample_group, rate, trunc_size, truncate, ingress, extack); if (IS_ERR(sampler)) return PTR_ERR(sampler); err = mlxsw_afa_block_append_allocated_sampler(block, sampler->span_id, rate); if (err) { NL_SET_ERR_MSG_MOD(extack, "Cannot append sampler action"); goto err_append_allocated_sampler; } return 0; err_append_allocated_sampler: mlxsw_afa_sampler_destroy(block, sampler); return err; } EXPORT_SYMBOL(mlxsw_afa_block_append_sampler);
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