// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/errno.h>
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#include <linux/rhashtable.h>
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#include <linux/list.h>
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#include "item.h"
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#include "trap.h"
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#include "core_acl_flex_actions.h"
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enum mlxsw_afa_set_type {
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MLXSW_AFA_SET_TYPE_NEXT,
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MLXSW_AFA_SET_TYPE_GOTO,
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};
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/* afa_set_type
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* Type of the record at the end of the action set.
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*/
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MLXSW_ITEM32(afa, set, type, 0xA0, 28, 4);
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/* afa_set_next_action_set_ptr
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* A pointer to the next action set in the KVD Centralized database.
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*/
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MLXSW_ITEM32(afa, set, next_action_set_ptr, 0xA4, 0, 24);
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/* afa_set_goto_g
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* group - When set, the binding is of an ACL group. When cleared,
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* the binding is of an ACL.
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* Must be set to 1 for Spectrum.
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*/
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MLXSW_ITEM32(afa, set, goto_g, 0xA4, 29, 1);
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enum mlxsw_afa_set_goto_binding_cmd {
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/* continue go the next binding point */
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MLXSW_AFA_SET_GOTO_BINDING_CMD_NONE,
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/* jump to the next binding point no return */
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MLXSW_AFA_SET_GOTO_BINDING_CMD_JUMP,
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/* terminate the acl binding */
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MLXSW_AFA_SET_GOTO_BINDING_CMD_TERM = 4,
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};
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/* afa_set_goto_binding_cmd */
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MLXSW_ITEM32(afa, set, goto_binding_cmd, 0xA4, 24, 3);
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/* afa_set_goto_next_binding
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* ACL/ACL group identifier. If the g bit is set, this field should hold
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* the acl_group_id, else it should hold the acl_id.
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*/
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MLXSW_ITEM32(afa, set, goto_next_binding, 0xA4, 0, 16);
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/* afa_all_action_type
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* Action Type.
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*/
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MLXSW_ITEM32(afa, all, action_type, 0x00, 24, 6);
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struct mlxsw_afa {
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unsigned int max_acts_per_set;
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const struct mlxsw_afa_ops *ops;
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void *ops_priv;
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struct rhashtable set_ht;
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struct rhashtable fwd_entry_ht;
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};
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#define MLXSW_AFA_SET_LEN 0xA8
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struct mlxsw_afa_set_ht_key {
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char enc_actions[MLXSW_AFA_SET_LEN]; /* Encoded set */
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bool is_first;
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};
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/* Set structure holds one action set record. It contains up to three
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* actions (depends on size of particular actions). The set is either
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* put directly to a rule, or it is stored in KVD linear area.
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* To prevent duplicate entries in KVD linear area, a hashtable is
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* used to track sets that were previously inserted and may be shared.
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*/
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struct mlxsw_afa_set {
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struct rhash_head ht_node;
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struct mlxsw_afa_set_ht_key ht_key;
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u32 kvdl_index;
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bool shared; /* Inserted in hashtable (doesn't mean that
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* kvdl_index is valid).
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*/
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unsigned int ref_count;
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struct mlxsw_afa_set *next; /* Pointer to the next set. */
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struct mlxsw_afa_set *prev; /* Pointer to the previous set,
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* note that set may have multiple
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* sets from multiple blocks
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* pointing at it. This is only
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* usable until commit.
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*/
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};
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static const struct rhashtable_params mlxsw_afa_set_ht_params = {
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.key_len = sizeof(struct mlxsw_afa_set_ht_key),
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.key_offset = offsetof(struct mlxsw_afa_set, ht_key),
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.head_offset = offsetof(struct mlxsw_afa_set, ht_node),
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.automatic_shrinking = true,
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};
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struct mlxsw_afa_fwd_entry_ht_key {
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u8 local_port;
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};
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struct mlxsw_afa_fwd_entry {
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struct rhash_head ht_node;
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struct mlxsw_afa_fwd_entry_ht_key ht_key;
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u32 kvdl_index;
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unsigned int ref_count;
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};
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static const struct rhashtable_params mlxsw_afa_fwd_entry_ht_params = {
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.key_len = sizeof(struct mlxsw_afa_fwd_entry_ht_key),
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.key_offset = offsetof(struct mlxsw_afa_fwd_entry, ht_key),
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.head_offset = offsetof(struct mlxsw_afa_fwd_entry, ht_node),
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.automatic_shrinking = true,
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};
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struct mlxsw_afa *mlxsw_afa_create(unsigned int max_acts_per_set,
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const struct mlxsw_afa_ops *ops,
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void *ops_priv)
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{
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struct mlxsw_afa *mlxsw_afa;
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int err;
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mlxsw_afa = kzalloc(sizeof(*mlxsw_afa), GFP_KERNEL);
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if (!mlxsw_afa)
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return ERR_PTR(-ENOMEM);
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err = rhashtable_init(&mlxsw_afa->set_ht, &mlxsw_afa_set_ht_params);
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if (err)
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goto err_set_rhashtable_init;
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err = rhashtable_init(&mlxsw_afa->fwd_entry_ht,
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&mlxsw_afa_fwd_entry_ht_params);
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if (err)
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goto err_fwd_entry_rhashtable_init;
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mlxsw_afa->max_acts_per_set = max_acts_per_set;
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mlxsw_afa->ops = ops;
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mlxsw_afa->ops_priv = ops_priv;
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return mlxsw_afa;
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err_fwd_entry_rhashtable_init:
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rhashtable_destroy(&mlxsw_afa->set_ht);
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err_set_rhashtable_init:
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kfree(mlxsw_afa);
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return ERR_PTR(err);
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}
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EXPORT_SYMBOL(mlxsw_afa_create);
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void mlxsw_afa_destroy(struct mlxsw_afa *mlxsw_afa)
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{
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rhashtable_destroy(&mlxsw_afa->fwd_entry_ht);
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rhashtable_destroy(&mlxsw_afa->set_ht);
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kfree(mlxsw_afa);
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}
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EXPORT_SYMBOL(mlxsw_afa_destroy);
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static void mlxsw_afa_set_goto_set(struct mlxsw_afa_set *set,
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enum mlxsw_afa_set_goto_binding_cmd cmd,
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u16 group_id)
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{
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char *actions = set->ht_key.enc_actions;
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mlxsw_afa_set_type_set(actions, MLXSW_AFA_SET_TYPE_GOTO);
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mlxsw_afa_set_goto_g_set(actions, true);
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mlxsw_afa_set_goto_binding_cmd_set(actions, cmd);
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mlxsw_afa_set_goto_next_binding_set(actions, group_id);
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}
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static void mlxsw_afa_set_next_set(struct mlxsw_afa_set *set,
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u32 next_set_kvdl_index)
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{
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char *actions = set->ht_key.enc_actions;
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mlxsw_afa_set_type_set(actions, MLXSW_AFA_SET_TYPE_NEXT);
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mlxsw_afa_set_next_action_set_ptr_set(actions, next_set_kvdl_index);
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}
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static struct mlxsw_afa_set *mlxsw_afa_set_create(bool is_first)
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{
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struct mlxsw_afa_set *set;
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set = kzalloc(sizeof(*set), GFP_KERNEL);
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if (!set)
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return NULL;
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/* Need to initialize the set to pass by default */
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mlxsw_afa_set_goto_set(set, MLXSW_AFA_SET_GOTO_BINDING_CMD_TERM, 0);
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set->ht_key.is_first = is_first;
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set->ref_count = 1;
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return set;
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}
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static void mlxsw_afa_set_destroy(struct mlxsw_afa_set *set)
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{
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kfree(set);
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}
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static int mlxsw_afa_set_share(struct mlxsw_afa *mlxsw_afa,
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struct mlxsw_afa_set *set)
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{
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int err;
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err = rhashtable_insert_fast(&mlxsw_afa->set_ht, &set->ht_node,
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mlxsw_afa_set_ht_params);
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if (err)
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return err;
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err = mlxsw_afa->ops->kvdl_set_add(mlxsw_afa->ops_priv,
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&set->kvdl_index,
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set->ht_key.enc_actions,
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set->ht_key.is_first);
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if (err)
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goto err_kvdl_set_add;
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set->shared = true;
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set->prev = NULL;
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return 0;
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err_kvdl_set_add:
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rhashtable_remove_fast(&mlxsw_afa->set_ht, &set->ht_node,
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mlxsw_afa_set_ht_params);
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return err;
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}
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static void mlxsw_afa_set_unshare(struct mlxsw_afa *mlxsw_afa,
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struct mlxsw_afa_set *set)
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{
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mlxsw_afa->ops->kvdl_set_del(mlxsw_afa->ops_priv,
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set->kvdl_index,
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set->ht_key.is_first);
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rhashtable_remove_fast(&mlxsw_afa->set_ht, &set->ht_node,
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mlxsw_afa_set_ht_params);
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set->shared = false;
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}
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static void mlxsw_afa_set_put(struct mlxsw_afa *mlxsw_afa,
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struct mlxsw_afa_set *set)
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{
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if (--set->ref_count)
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return;
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if (set->shared)
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mlxsw_afa_set_unshare(mlxsw_afa, set);
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mlxsw_afa_set_destroy(set);
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}
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static struct mlxsw_afa_set *mlxsw_afa_set_get(struct mlxsw_afa *mlxsw_afa,
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struct mlxsw_afa_set *orig_set)
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{
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struct mlxsw_afa_set *set;
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int err;
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/* There is a hashtable of sets maintained. If a set with the exact
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* same encoding exists, we reuse it. Otherwise, the current set
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* is shared by making it available to others using the hash table.
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*/
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set = rhashtable_lookup_fast(&mlxsw_afa->set_ht, &orig_set->ht_key,
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mlxsw_afa_set_ht_params);
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if (set) {
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set->ref_count++;
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mlxsw_afa_set_put(mlxsw_afa, orig_set);
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} else {
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set = orig_set;
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err = mlxsw_afa_set_share(mlxsw_afa, set);
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if (err)
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return ERR_PTR(err);
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}
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return set;
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}
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/* Block structure holds a list of action sets. One action block
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* represents one chain of actions executed upon match of a rule.
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*/
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struct mlxsw_afa_block {
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struct mlxsw_afa *afa;
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bool finished;
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struct mlxsw_afa_set *first_set;
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struct mlxsw_afa_set *cur_set;
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unsigned int cur_act_index; /* In current set. */
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struct list_head resource_list; /* List of resources held by actions
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* in this block.
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*/
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};
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struct mlxsw_afa_resource {
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struct list_head list;
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void (*destructor)(struct mlxsw_afa_block *block,
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struct mlxsw_afa_resource *resource);
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};
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static void mlxsw_afa_resource_add(struct mlxsw_afa_block *block,
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struct mlxsw_afa_resource *resource)
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{
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list_add(&resource->list, &block->resource_list);
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}
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static void mlxsw_afa_resource_del(struct mlxsw_afa_resource *resource)
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{
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list_del(&resource->list);
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}
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static void mlxsw_afa_resources_destroy(struct mlxsw_afa_block *block)
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{
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struct mlxsw_afa_resource *resource, *tmp;
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list_for_each_entry_safe(resource, tmp, &block->resource_list, list) {
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resource->destructor(block, resource);
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}
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}
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struct mlxsw_afa_block *mlxsw_afa_block_create(struct mlxsw_afa *mlxsw_afa)
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{
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struct mlxsw_afa_block *block;
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block = kzalloc(sizeof(*block), GFP_KERNEL);
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if (!block)
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return ERR_PTR(-ENOMEM);
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INIT_LIST_HEAD(&block->resource_list);
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block->afa = mlxsw_afa;
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/* At least one action set is always present, so just create it here */
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block->first_set = mlxsw_afa_set_create(true);
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if (!block->first_set)
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goto err_first_set_create;
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/* In case user instructs to have dummy first set, we leave it
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* empty here and create another, real, set right away.
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*/
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if (mlxsw_afa->ops->dummy_first_set) {
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block->cur_set = mlxsw_afa_set_create(false);
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if (!block->cur_set)
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goto err_second_set_create;
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block->cur_set->prev = block->first_set;
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block->first_set->next = block->cur_set;
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} else {
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block->cur_set = block->first_set;
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}
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return block;
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err_second_set_create:
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mlxsw_afa_set_destroy(block->first_set);
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err_first_set_create:
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kfree(block);
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return ERR_PTR(-ENOMEM);
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}
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EXPORT_SYMBOL(mlxsw_afa_block_create);
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void mlxsw_afa_block_destroy(struct mlxsw_afa_block *block)
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{
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struct mlxsw_afa_set *set = block->first_set;
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struct mlxsw_afa_set *next_set;
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do {
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next_set = set->next;
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mlxsw_afa_set_put(block->afa, set);
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set = next_set;
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} while (set);
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mlxsw_afa_resources_destroy(block);
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kfree(block);
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}
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EXPORT_SYMBOL(mlxsw_afa_block_destroy);
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int mlxsw_afa_block_commit(struct mlxsw_afa_block *block)
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{
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struct mlxsw_afa_set *set = block->cur_set;
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struct mlxsw_afa_set *prev_set;
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block->cur_set = NULL;
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block->finished = true;
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/* Go over all linked sets starting from last
|
* and try to find existing set in the hash table.
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* In case it is not there, assign a KVD linear index
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* and insert it.
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*/
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do {
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prev_set = set->prev;
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set = mlxsw_afa_set_get(block->afa, set);
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if (IS_ERR(set))
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/* No rollback is needed since the chain is
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* in consistent state and mlxsw_afa_block_destroy
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* will take care of putting it away.
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*/
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return PTR_ERR(set);
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if (prev_set) {
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prev_set->next = set;
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mlxsw_afa_set_next_set(prev_set, set->kvdl_index);
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set = prev_set;
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}
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} while (prev_set);
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block->first_set = set;
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return 0;
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}
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EXPORT_SYMBOL(mlxsw_afa_block_commit);
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char *mlxsw_afa_block_first_set(struct mlxsw_afa_block *block)
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{
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return block->first_set->ht_key.enc_actions;
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}
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EXPORT_SYMBOL(mlxsw_afa_block_first_set);
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char *mlxsw_afa_block_cur_set(struct mlxsw_afa_block *block)
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{
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return block->cur_set->ht_key.enc_actions;
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}
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EXPORT_SYMBOL(mlxsw_afa_block_cur_set);
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u32 mlxsw_afa_block_first_kvdl_index(struct mlxsw_afa_block *block)
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{
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/* First set is never in KVD linear. So the first set
|
* with valid KVD linear index is always the second one.
|
*/
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if (WARN_ON(!block->first_set->next))
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return 0;
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return block->first_set->next->kvdl_index;
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}
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EXPORT_SYMBOL(mlxsw_afa_block_first_kvdl_index);
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int mlxsw_afa_block_activity_get(struct mlxsw_afa_block *block, bool *activity)
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{
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u32 kvdl_index = mlxsw_afa_block_first_kvdl_index(block);
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return block->afa->ops->kvdl_set_activity_get(block->afa->ops_priv,
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kvdl_index, activity);
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}
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EXPORT_SYMBOL(mlxsw_afa_block_activity_get);
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int mlxsw_afa_block_continue(struct mlxsw_afa_block *block)
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{
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if (block->finished)
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return -EINVAL;
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mlxsw_afa_set_goto_set(block->cur_set,
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MLXSW_AFA_SET_GOTO_BINDING_CMD_NONE, 0);
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block->finished = true;
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return 0;
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}
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EXPORT_SYMBOL(mlxsw_afa_block_continue);
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int mlxsw_afa_block_jump(struct mlxsw_afa_block *block, u16 group_id)
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{
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if (block->finished)
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return -EINVAL;
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mlxsw_afa_set_goto_set(block->cur_set,
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MLXSW_AFA_SET_GOTO_BINDING_CMD_JUMP, group_id);
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block->finished = true;
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return 0;
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}
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EXPORT_SYMBOL(mlxsw_afa_block_jump);
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int mlxsw_afa_block_terminate(struct mlxsw_afa_block *block)
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{
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if (block->finished)
|
return -EINVAL;
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mlxsw_afa_set_goto_set(block->cur_set,
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MLXSW_AFA_SET_GOTO_BINDING_CMD_TERM, 0);
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block->finished = true;
|
return 0;
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}
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EXPORT_SYMBOL(mlxsw_afa_block_terminate);
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static struct mlxsw_afa_fwd_entry *
|
mlxsw_afa_fwd_entry_create(struct mlxsw_afa *mlxsw_afa, u8 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;
|
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, u8 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) {
|
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 (--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, u8 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);
|
}
|
|
#define MLXSW_AFA_ONE_ACTION_LEN 32
|
#define MLXSW_AFA_PAYLOAD_OFFSET 4
|
|
static char *mlxsw_afa_block_append_action(struct mlxsw_afa_block *block,
|
u8 action_code, u8 action_size)
|
{
|
char *oneact;
|
char *actions;
|
|
if (block->finished)
|
return ERR_PTR(-EINVAL);
|
if (block->cur_act_index + action_size >
|
block->afa->max_acts_per_set) {
|
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;
|
}
|
|
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;
|
}
|
|
/* 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 / Discard Action
|
* ---------------------
|
* The Trap / Discard 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).
|
*/
|
|
#define MLXSW_AFA_TRAPDISC_CODE 0x03
|
#define MLXSW_AFA_TRAPDISC_SIZE 1
|
|
enum mlxsw_afa_trapdisc_trap_action {
|
MLXSW_AFA_TRAPDISC_TRAP_ACTION_NOP = 0,
|
MLXSW_AFA_TRAPDISC_TRAP_ACTION_TRAP = 2,
|
};
|
|
/* afa_trapdisc_trap_action
|
* Trap Action.
|
*/
|
MLXSW_ITEM32(afa, trapdisc, trap_action, 0x00, 24, 4);
|
|
enum mlxsw_afa_trapdisc_forward_action {
|
MLXSW_AFA_TRAPDISC_FORWARD_ACTION_FORWARD = 1,
|
MLXSW_AFA_TRAPDISC_FORWARD_ACTION_DISCARD = 3,
|
};
|
|
/* afa_trapdisc_forward_action
|
* Forward Action.
|
*/
|
MLXSW_ITEM32(afa, trapdisc, forward_action, 0x00, 0, 4);
|
|
/* afa_trapdisc_trap_id
|
* Trap ID to configure.
|
*/
|
MLXSW_ITEM32(afa, trapdisc, trap_id, 0x04, 0, 9);
|
|
/* afa_trapdisc_mirror_agent
|
* Mirror agent.
|
*/
|
MLXSW_ITEM32(afa, trapdisc, mirror_agent, 0x08, 29, 3);
|
|
/* afa_trapdisc_mirror_enable
|
* Mirror enable.
|
*/
|
MLXSW_ITEM32(afa, trapdisc, mirror_enable, 0x08, 24, 1);
|
|
static inline void
|
mlxsw_afa_trapdisc_pack(char *payload,
|
enum mlxsw_afa_trapdisc_trap_action trap_action,
|
enum mlxsw_afa_trapdisc_forward_action forward_action,
|
u16 trap_id)
|
{
|
mlxsw_afa_trapdisc_trap_action_set(payload, trap_action);
|
mlxsw_afa_trapdisc_forward_action_set(payload, forward_action);
|
mlxsw_afa_trapdisc_trap_id_set(payload, trap_id);
|
}
|
|
static inline void
|
mlxsw_afa_trapdisc_mirror_pack(char *payload, bool mirror_enable,
|
u8 mirror_agent)
|
{
|
mlxsw_afa_trapdisc_mirror_enable_set(payload, mirror_enable);
|
mlxsw_afa_trapdisc_mirror_agent_set(payload, mirror_agent);
|
}
|
|
int mlxsw_afa_block_append_drop(struct mlxsw_afa_block *block)
|
{
|
char *act = mlxsw_afa_block_append_action(block,
|
MLXSW_AFA_TRAPDISC_CODE,
|
MLXSW_AFA_TRAPDISC_SIZE);
|
|
if (IS_ERR(act))
|
return PTR_ERR(act);
|
mlxsw_afa_trapdisc_pack(act, MLXSW_AFA_TRAPDISC_TRAP_ACTION_NOP,
|
MLXSW_AFA_TRAPDISC_FORWARD_ACTION_DISCARD, 0);
|
return 0;
|
}
|
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(block,
|
MLXSW_AFA_TRAPDISC_CODE,
|
MLXSW_AFA_TRAPDISC_SIZE);
|
|
if (IS_ERR(act))
|
return PTR_ERR(act);
|
mlxsw_afa_trapdisc_pack(act, MLXSW_AFA_TRAPDISC_TRAP_ACTION_TRAP,
|
MLXSW_AFA_TRAPDISC_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(block,
|
MLXSW_AFA_TRAPDISC_CODE,
|
MLXSW_AFA_TRAPDISC_SIZE);
|
|
if (IS_ERR(act))
|
return PTR_ERR(act);
|
mlxsw_afa_trapdisc_pack(act, MLXSW_AFA_TRAPDISC_TRAP_ACTION_TRAP,
|
MLXSW_AFA_TRAPDISC_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;
|
u8 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, u8 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(block,
|
MLXSW_AFA_TRAPDISC_CODE,
|
MLXSW_AFA_TRAPDISC_SIZE);
|
if (IS_ERR(act))
|
return PTR_ERR(act);
|
mlxsw_afa_trapdisc_pack(act, MLXSW_AFA_TRAPDISC_TRAP_ACTION_NOP,
|
MLXSW_AFA_TRAPDISC_FORWARD_ACTION_FORWARD, 0);
|
mlxsw_afa_trapdisc_mirror_pack(act, true, mirror_agent);
|
return 0;
|
}
|
|
int
|
mlxsw_afa_block_append_mirror(struct mlxsw_afa_block *block, u8 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);
|
|
/* 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,
|
u8 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_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);
|
|
static inline void
|
mlxsw_afa_polcnt_pack(char *payload,
|
enum mlxsw_afa_polcnt_counter_set_type set_type,
|
u32 counter_index)
|
{
|
mlxsw_afa_polcnt_counter_set_type_set(payload, set_type);
|
mlxsw_afa_polcnt_counter_index_set(payload, counter_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);
|
|
/* 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
|
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enum mlxsw_afa_virfwd_fid_cmd {
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/* Do nothing */
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MLXSW_AFA_VIRFWD_FID_CMD_NOOP,
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/* Set the Forwarding Identifier (FID) to fid */
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MLXSW_AFA_VIRFWD_FID_CMD_SET,
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};
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/* afa_virfwd_fid_cmd */
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MLXSW_ITEM32(afa, virfwd, fid_cmd, 0x08, 29, 3);
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/* afa_virfwd_fid
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* The FID value.
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*/
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MLXSW_ITEM32(afa, virfwd, fid, 0x08, 0, 16);
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static inline void mlxsw_afa_virfwd_pack(char *payload,
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enum mlxsw_afa_virfwd_fid_cmd fid_cmd,
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u16 fid)
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{
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mlxsw_afa_virfwd_fid_cmd_set(payload, fid_cmd);
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mlxsw_afa_virfwd_fid_set(payload, fid);
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}
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int mlxsw_afa_block_append_fid_set(struct mlxsw_afa_block *block, u16 fid,
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struct netlink_ext_ack *extack)
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{
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char *act = mlxsw_afa_block_append_action(block,
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MLXSW_AFA_VIRFWD_CODE,
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MLXSW_AFA_VIRFWD_SIZE);
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if (IS_ERR(act)) {
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NL_SET_ERR_MSG_MOD(extack, "Cannot append fid_set action");
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return PTR_ERR(act);
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}
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mlxsw_afa_virfwd_pack(act, MLXSW_AFA_VIRFWD_FID_CMD_SET, fid);
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return 0;
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}
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EXPORT_SYMBOL(mlxsw_afa_block_append_fid_set);
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/* MC Routing Action
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* -----------------
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* The Multicast router action. Can be used by RMFT_V2 - Router Multicast
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* Forwarding Table Version 2 Register.
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*/
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#define MLXSW_AFA_MCROUTER_CODE 0x10
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#define MLXSW_AFA_MCROUTER_SIZE 2
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enum mlxsw_afa_mcrouter_rpf_action {
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MLXSW_AFA_MCROUTER_RPF_ACTION_NOP,
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MLXSW_AFA_MCROUTER_RPF_ACTION_TRAP,
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MLXSW_AFA_MCROUTER_RPF_ACTION_DISCARD_ERROR,
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};
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/* afa_mcrouter_rpf_action */
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MLXSW_ITEM32(afa, mcrouter, rpf_action, 0x00, 28, 3);
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/* afa_mcrouter_expected_irif */
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MLXSW_ITEM32(afa, mcrouter, expected_irif, 0x00, 0, 16);
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/* afa_mcrouter_min_mtu */
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MLXSW_ITEM32(afa, mcrouter, min_mtu, 0x08, 0, 16);
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enum mlxsw_afa_mrouter_vrmid {
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MLXSW_AFA_MCROUTER_VRMID_INVALID,
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MLXSW_AFA_MCROUTER_VRMID_VALID
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};
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/* afa_mcrouter_vrmid
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* Valid RMID: rigr_rmid_index is used as RMID
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*/
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MLXSW_ITEM32(afa, mcrouter, vrmid, 0x0C, 31, 1);
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/* afa_mcrouter_rigr_rmid_index
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* When the vrmid field is set to invalid, the field is used as pointer to
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* Router Interface Group (RIGR) Table in the KVD linear.
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* When the vrmid is set to valid, the field is used as RMID index, ranged
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* from 0 to max_mid - 1. The index is to the Port Group Table.
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*/
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MLXSW_ITEM32(afa, mcrouter, rigr_rmid_index, 0x0C, 0, 24);
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static inline void
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mlxsw_afa_mcrouter_pack(char *payload,
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enum mlxsw_afa_mcrouter_rpf_action rpf_action,
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u16 expected_irif, u16 min_mtu,
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enum mlxsw_afa_mrouter_vrmid vrmid, u32 rigr_rmid_index)
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{
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mlxsw_afa_mcrouter_rpf_action_set(payload, rpf_action);
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mlxsw_afa_mcrouter_expected_irif_set(payload, expected_irif);
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mlxsw_afa_mcrouter_min_mtu_set(payload, min_mtu);
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mlxsw_afa_mcrouter_vrmid_set(payload, vrmid);
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mlxsw_afa_mcrouter_rigr_rmid_index_set(payload, rigr_rmid_index);
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}
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int mlxsw_afa_block_append_mcrouter(struct mlxsw_afa_block *block,
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u16 expected_irif, u16 min_mtu,
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bool rmid_valid, u32 kvdl_index)
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{
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char *act = mlxsw_afa_block_append_action(block,
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MLXSW_AFA_MCROUTER_CODE,
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MLXSW_AFA_MCROUTER_SIZE);
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if (IS_ERR(act))
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return PTR_ERR(act);
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mlxsw_afa_mcrouter_pack(act, MLXSW_AFA_MCROUTER_RPF_ACTION_TRAP,
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expected_irif, min_mtu, rmid_valid, kvdl_index);
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return 0;
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}
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EXPORT_SYMBOL(mlxsw_afa_block_append_mcrouter);
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