1244 lines
33 KiB
C
1244 lines
33 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
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/* Copyright (c) 2019 Mellanox Technologies. */
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#include "dr_types.h"
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#define DR_RULE_MAX_STE_CHAIN (DR_RULE_MAX_STES + DR_ACTION_MAX_STES)
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struct mlx5dr_rule_action_member {
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struct mlx5dr_action *action;
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struct list_head list;
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};
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static int dr_rule_append_to_miss_list(struct mlx5dr_ste *new_last_ste,
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struct list_head *miss_list,
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struct list_head *send_list)
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{
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struct mlx5dr_ste_send_info *ste_info_last;
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struct mlx5dr_ste *last_ste;
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/* The new entry will be inserted after the last */
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last_ste = list_last_entry(miss_list, struct mlx5dr_ste, miss_list_node);
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WARN_ON(!last_ste);
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ste_info_last = kzalloc(sizeof(*ste_info_last), GFP_KERNEL);
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if (!ste_info_last)
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return -ENOMEM;
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mlx5dr_ste_set_miss_addr(last_ste->hw_ste,
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mlx5dr_ste_get_icm_addr(new_last_ste));
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list_add_tail(&new_last_ste->miss_list_node, miss_list);
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mlx5dr_send_fill_and_append_ste_send_info(last_ste, DR_STE_SIZE_REDUCED,
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0, last_ste->hw_ste,
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ste_info_last, send_list, true);
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return 0;
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}
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static struct mlx5dr_ste *
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dr_rule_create_collision_htbl(struct mlx5dr_matcher *matcher,
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struct mlx5dr_matcher_rx_tx *nic_matcher,
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u8 *hw_ste)
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{
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struct mlx5dr_domain *dmn = matcher->tbl->dmn;
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struct mlx5dr_ste_htbl *new_htbl;
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struct mlx5dr_ste *ste;
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/* Create new table for miss entry */
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new_htbl = mlx5dr_ste_htbl_alloc(dmn->ste_icm_pool,
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DR_CHUNK_SIZE_1,
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MLX5DR_STE_LU_TYPE_DONT_CARE,
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0);
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if (!new_htbl) {
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mlx5dr_dbg(dmn, "Failed allocating collision table\n");
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return NULL;
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}
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/* One and only entry, never grows */
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ste = new_htbl->ste_arr;
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mlx5dr_ste_set_miss_addr(hw_ste, nic_matcher->e_anchor->chunk->icm_addr);
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mlx5dr_htbl_get(new_htbl);
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return ste;
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}
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static struct mlx5dr_ste *
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dr_rule_create_collision_entry(struct mlx5dr_matcher *matcher,
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struct mlx5dr_matcher_rx_tx *nic_matcher,
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u8 *hw_ste,
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struct mlx5dr_ste *orig_ste)
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{
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struct mlx5dr_ste *ste;
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ste = dr_rule_create_collision_htbl(matcher, nic_matcher, hw_ste);
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if (!ste) {
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mlx5dr_dbg(matcher->tbl->dmn, "Failed creating collision entry\n");
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return NULL;
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}
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ste->ste_chain_location = orig_ste->ste_chain_location;
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/* In collision entry, all members share the same miss_list_head */
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ste->htbl->miss_list = mlx5dr_ste_get_miss_list(orig_ste);
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/* Next table */
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if (mlx5dr_ste_create_next_htbl(matcher, nic_matcher, ste, hw_ste,
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DR_CHUNK_SIZE_1)) {
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mlx5dr_dbg(matcher->tbl->dmn, "Failed allocating table\n");
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goto free_tbl;
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}
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return ste;
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free_tbl:
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mlx5dr_ste_free(ste, matcher, nic_matcher);
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return NULL;
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}
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static int
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dr_rule_handle_one_ste_in_update_list(struct mlx5dr_ste_send_info *ste_info,
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struct mlx5dr_domain *dmn)
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{
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int ret;
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list_del(&ste_info->send_list);
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ret = mlx5dr_send_postsend_ste(dmn, ste_info->ste, ste_info->data,
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ste_info->size, ste_info->offset);
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if (ret)
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goto out;
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/* Copy data to ste, only reduced size, the last 16B (mask)
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* is already written to the hw.
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*/
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memcpy(ste_info->ste->hw_ste, ste_info->data, DR_STE_SIZE_REDUCED);
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out:
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kfree(ste_info);
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return ret;
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}
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static int dr_rule_send_update_list(struct list_head *send_ste_list,
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struct mlx5dr_domain *dmn,
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bool is_reverse)
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{
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struct mlx5dr_ste_send_info *ste_info, *tmp_ste_info;
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int ret;
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if (is_reverse) {
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list_for_each_entry_safe_reverse(ste_info, tmp_ste_info,
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send_ste_list, send_list) {
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ret = dr_rule_handle_one_ste_in_update_list(ste_info,
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dmn);
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if (ret)
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return ret;
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}
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} else {
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list_for_each_entry_safe(ste_info, tmp_ste_info,
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send_ste_list, send_list) {
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ret = dr_rule_handle_one_ste_in_update_list(ste_info,
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dmn);
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if (ret)
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return ret;
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}
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}
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return 0;
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}
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static struct mlx5dr_ste *
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dr_rule_find_ste_in_miss_list(struct list_head *miss_list, u8 *hw_ste)
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{
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struct mlx5dr_ste *ste;
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if (list_empty(miss_list))
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return NULL;
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/* Check if hw_ste is present in the list */
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list_for_each_entry(ste, miss_list, miss_list_node) {
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if (mlx5dr_ste_equal_tag(ste->hw_ste, hw_ste))
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return ste;
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}
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return NULL;
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}
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static struct mlx5dr_ste *
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dr_rule_rehash_handle_collision(struct mlx5dr_matcher *matcher,
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struct mlx5dr_matcher_rx_tx *nic_matcher,
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struct list_head *update_list,
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struct mlx5dr_ste *col_ste,
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u8 *hw_ste)
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{
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struct mlx5dr_ste *new_ste;
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int ret;
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new_ste = dr_rule_create_collision_htbl(matcher, nic_matcher, hw_ste);
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if (!new_ste)
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return NULL;
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/* In collision entry, all members share the same miss_list_head */
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new_ste->htbl->miss_list = mlx5dr_ste_get_miss_list(col_ste);
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/* Update the previous from the list */
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ret = dr_rule_append_to_miss_list(new_ste,
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mlx5dr_ste_get_miss_list(col_ste),
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update_list);
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if (ret) {
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mlx5dr_dbg(matcher->tbl->dmn, "Failed update dup entry\n");
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goto err_exit;
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}
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return new_ste;
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err_exit:
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mlx5dr_ste_free(new_ste, matcher, nic_matcher);
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return NULL;
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}
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static void dr_rule_rehash_copy_ste_ctrl(struct mlx5dr_matcher *matcher,
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struct mlx5dr_matcher_rx_tx *nic_matcher,
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struct mlx5dr_ste *cur_ste,
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struct mlx5dr_ste *new_ste)
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{
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new_ste->next_htbl = cur_ste->next_htbl;
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new_ste->ste_chain_location = cur_ste->ste_chain_location;
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if (!mlx5dr_ste_is_last_in_rule(nic_matcher, new_ste->ste_chain_location))
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new_ste->next_htbl->pointing_ste = new_ste;
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/* We need to copy the refcount since this ste
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* may have been traversed several times
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*/
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refcount_set(&new_ste->refcount, refcount_read(&cur_ste->refcount));
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/* Link old STEs rule_mem list to the new ste */
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mlx5dr_rule_update_rule_member(cur_ste, new_ste);
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INIT_LIST_HEAD(&new_ste->rule_list);
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list_splice_tail_init(&cur_ste->rule_list, &new_ste->rule_list);
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}
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static struct mlx5dr_ste *
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dr_rule_rehash_copy_ste(struct mlx5dr_matcher *matcher,
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struct mlx5dr_matcher_rx_tx *nic_matcher,
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struct mlx5dr_ste *cur_ste,
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struct mlx5dr_ste_htbl *new_htbl,
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struct list_head *update_list)
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{
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struct mlx5dr_ste_send_info *ste_info;
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bool use_update_list = false;
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u8 hw_ste[DR_STE_SIZE] = {};
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struct mlx5dr_ste *new_ste;
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int new_idx;
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u8 sb_idx;
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/* Copy STE mask from the matcher */
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sb_idx = cur_ste->ste_chain_location - 1;
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mlx5dr_ste_set_bit_mask(hw_ste, nic_matcher->ste_builder[sb_idx].bit_mask);
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/* Copy STE control and tag */
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memcpy(hw_ste, cur_ste->hw_ste, DR_STE_SIZE_REDUCED);
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mlx5dr_ste_set_miss_addr(hw_ste, nic_matcher->e_anchor->chunk->icm_addr);
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new_idx = mlx5dr_ste_calc_hash_index(hw_ste, new_htbl);
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new_ste = &new_htbl->ste_arr[new_idx];
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if (mlx5dr_ste_not_used_ste(new_ste)) {
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mlx5dr_htbl_get(new_htbl);
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list_add_tail(&new_ste->miss_list_node,
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mlx5dr_ste_get_miss_list(new_ste));
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} else {
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new_ste = dr_rule_rehash_handle_collision(matcher,
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nic_matcher,
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update_list,
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new_ste,
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hw_ste);
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if (!new_ste) {
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mlx5dr_dbg(matcher->tbl->dmn, "Failed adding collision entry, index: %d\n",
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new_idx);
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return NULL;
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}
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new_htbl->ctrl.num_of_collisions++;
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use_update_list = true;
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}
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memcpy(new_ste->hw_ste, hw_ste, DR_STE_SIZE_REDUCED);
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new_htbl->ctrl.num_of_valid_entries++;
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if (use_update_list) {
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ste_info = kzalloc(sizeof(*ste_info), GFP_KERNEL);
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if (!ste_info)
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goto err_exit;
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mlx5dr_send_fill_and_append_ste_send_info(new_ste, DR_STE_SIZE, 0,
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hw_ste, ste_info,
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update_list, true);
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}
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dr_rule_rehash_copy_ste_ctrl(matcher, nic_matcher, cur_ste, new_ste);
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return new_ste;
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err_exit:
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mlx5dr_ste_free(new_ste, matcher, nic_matcher);
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return NULL;
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}
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static int dr_rule_rehash_copy_miss_list(struct mlx5dr_matcher *matcher,
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struct mlx5dr_matcher_rx_tx *nic_matcher,
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struct list_head *cur_miss_list,
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struct mlx5dr_ste_htbl *new_htbl,
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struct list_head *update_list)
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{
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struct mlx5dr_ste *tmp_ste, *cur_ste, *new_ste;
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if (list_empty(cur_miss_list))
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return 0;
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list_for_each_entry_safe(cur_ste, tmp_ste, cur_miss_list, miss_list_node) {
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new_ste = dr_rule_rehash_copy_ste(matcher,
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nic_matcher,
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cur_ste,
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new_htbl,
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update_list);
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if (!new_ste)
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goto err_insert;
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list_del(&cur_ste->miss_list_node);
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mlx5dr_htbl_put(cur_ste->htbl);
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}
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return 0;
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err_insert:
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mlx5dr_err(matcher->tbl->dmn, "Fatal error during resize\n");
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WARN_ON(true);
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return -EINVAL;
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}
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static int dr_rule_rehash_copy_htbl(struct mlx5dr_matcher *matcher,
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struct mlx5dr_matcher_rx_tx *nic_matcher,
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struct mlx5dr_ste_htbl *cur_htbl,
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struct mlx5dr_ste_htbl *new_htbl,
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struct list_head *update_list)
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{
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struct mlx5dr_ste *cur_ste;
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int cur_entries;
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int err = 0;
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int i;
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cur_entries = mlx5dr_icm_pool_chunk_size_to_entries(cur_htbl->chunk_size);
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if (cur_entries < 1) {
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mlx5dr_dbg(matcher->tbl->dmn, "Invalid number of entries\n");
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return -EINVAL;
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}
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for (i = 0; i < cur_entries; i++) {
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cur_ste = &cur_htbl->ste_arr[i];
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if (mlx5dr_ste_not_used_ste(cur_ste)) /* Empty, nothing to copy */
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continue;
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err = dr_rule_rehash_copy_miss_list(matcher,
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nic_matcher,
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mlx5dr_ste_get_miss_list(cur_ste),
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new_htbl,
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update_list);
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if (err)
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goto clean_copy;
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}
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clean_copy:
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return err;
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}
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static struct mlx5dr_ste_htbl *
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dr_rule_rehash_htbl(struct mlx5dr_rule *rule,
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struct mlx5dr_rule_rx_tx *nic_rule,
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struct mlx5dr_ste_htbl *cur_htbl,
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u8 ste_location,
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struct list_head *update_list,
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enum mlx5dr_icm_chunk_size new_size)
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{
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struct mlx5dr_ste_send_info *del_ste_info, *tmp_ste_info;
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struct mlx5dr_matcher *matcher = rule->matcher;
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struct mlx5dr_domain *dmn = matcher->tbl->dmn;
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struct mlx5dr_matcher_rx_tx *nic_matcher;
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struct mlx5dr_ste_send_info *ste_info;
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struct mlx5dr_htbl_connect_info info;
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struct mlx5dr_domain_rx_tx *nic_dmn;
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u8 formatted_ste[DR_STE_SIZE] = {};
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LIST_HEAD(rehash_table_send_list);
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struct mlx5dr_ste *ste_to_update;
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struct mlx5dr_ste_htbl *new_htbl;
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int err;
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nic_matcher = nic_rule->nic_matcher;
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nic_dmn = nic_matcher->nic_tbl->nic_dmn;
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ste_info = kzalloc(sizeof(*ste_info), GFP_KERNEL);
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if (!ste_info)
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return NULL;
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new_htbl = mlx5dr_ste_htbl_alloc(dmn->ste_icm_pool,
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new_size,
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cur_htbl->lu_type,
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cur_htbl->byte_mask);
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if (!new_htbl) {
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mlx5dr_err(dmn, "Failed to allocate new hash table\n");
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goto free_ste_info;
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}
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/* Write new table to HW */
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info.type = CONNECT_MISS;
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info.miss_icm_addr = nic_matcher->e_anchor->chunk->icm_addr;
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mlx5dr_ste_set_formatted_ste(dmn->info.caps.gvmi,
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nic_dmn,
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new_htbl,
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formatted_ste,
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&info);
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new_htbl->pointing_ste = cur_htbl->pointing_ste;
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new_htbl->pointing_ste->next_htbl = new_htbl;
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err = dr_rule_rehash_copy_htbl(matcher,
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nic_matcher,
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cur_htbl,
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new_htbl,
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&rehash_table_send_list);
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if (err)
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goto free_new_htbl;
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if (mlx5dr_send_postsend_htbl(dmn, new_htbl, formatted_ste,
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nic_matcher->ste_builder[ste_location - 1].bit_mask)) {
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mlx5dr_err(dmn, "Failed writing table to HW\n");
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goto free_new_htbl;
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}
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/* Writing to the hw is done in regular order of rehash_table_send_list,
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* in order to have the origin data written before the miss address of
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* collision entries, if exists.
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*/
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if (dr_rule_send_update_list(&rehash_table_send_list, dmn, false)) {
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mlx5dr_err(dmn, "Failed updating table to HW\n");
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goto free_ste_list;
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}
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/* Connect previous hash table to current */
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if (ste_location == 1) {
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/* The previous table is an anchor, anchors size is always one STE */
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struct mlx5dr_ste_htbl *prev_htbl = cur_htbl->pointing_ste->htbl;
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/* On matcher s_anchor we keep an extra refcount */
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mlx5dr_htbl_get(new_htbl);
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mlx5dr_htbl_put(cur_htbl);
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nic_matcher->s_htbl = new_htbl;
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/* It is safe to operate dr_ste_set_hit_addr on the hw_ste here
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* (48B len) which works only on first 32B
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*/
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mlx5dr_ste_set_hit_addr(prev_htbl->ste_arr[0].hw_ste,
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new_htbl->chunk->icm_addr,
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new_htbl->chunk->num_of_entries);
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ste_to_update = &prev_htbl->ste_arr[0];
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} else {
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mlx5dr_ste_set_hit_addr_by_next_htbl(cur_htbl->pointing_ste->hw_ste,
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new_htbl);
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ste_to_update = cur_htbl->pointing_ste;
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}
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mlx5dr_send_fill_and_append_ste_send_info(ste_to_update, DR_STE_SIZE_REDUCED,
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0, ste_to_update->hw_ste, ste_info,
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update_list, false);
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return new_htbl;
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|
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free_ste_list:
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/* Clean all ste_info's from the new table */
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list_for_each_entry_safe(del_ste_info, tmp_ste_info,
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&rehash_table_send_list, send_list) {
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list_del(&del_ste_info->send_list);
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kfree(del_ste_info);
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}
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free_new_htbl:
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mlx5dr_ste_htbl_free(new_htbl);
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free_ste_info:
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kfree(ste_info);
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mlx5dr_info(dmn, "Failed creating rehash table\n");
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return NULL;
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}
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|
|
static struct mlx5dr_ste_htbl *dr_rule_rehash(struct mlx5dr_rule *rule,
|
|
struct mlx5dr_rule_rx_tx *nic_rule,
|
|
struct mlx5dr_ste_htbl *cur_htbl,
|
|
u8 ste_location,
|
|
struct list_head *update_list)
|
|
{
|
|
struct mlx5dr_domain *dmn = rule->matcher->tbl->dmn;
|
|
enum mlx5dr_icm_chunk_size new_size;
|
|
|
|
new_size = mlx5dr_icm_next_higher_chunk(cur_htbl->chunk_size);
|
|
new_size = min_t(u32, new_size, dmn->info.max_log_sw_icm_sz);
|
|
|
|
if (new_size == cur_htbl->chunk_size)
|
|
return NULL; /* Skip rehash, we already at the max size */
|
|
|
|
return dr_rule_rehash_htbl(rule, nic_rule, cur_htbl, ste_location,
|
|
update_list, new_size);
|
|
}
|
|
|
|
static struct mlx5dr_ste *
|
|
dr_rule_handle_collision(struct mlx5dr_matcher *matcher,
|
|
struct mlx5dr_matcher_rx_tx *nic_matcher,
|
|
struct mlx5dr_ste *ste,
|
|
u8 *hw_ste,
|
|
struct list_head *miss_list,
|
|
struct list_head *send_list)
|
|
{
|
|
struct mlx5dr_ste_send_info *ste_info;
|
|
struct mlx5dr_ste *new_ste;
|
|
|
|
ste_info = kzalloc(sizeof(*ste_info), GFP_KERNEL);
|
|
if (!ste_info)
|
|
return NULL;
|
|
|
|
new_ste = dr_rule_create_collision_entry(matcher, nic_matcher, hw_ste, ste);
|
|
if (!new_ste)
|
|
goto free_send_info;
|
|
|
|
if (dr_rule_append_to_miss_list(new_ste, miss_list, send_list)) {
|
|
mlx5dr_dbg(matcher->tbl->dmn, "Failed to update prev miss_list\n");
|
|
goto err_exit;
|
|
}
|
|
|
|
mlx5dr_send_fill_and_append_ste_send_info(new_ste, DR_STE_SIZE, 0, hw_ste,
|
|
ste_info, send_list, false);
|
|
|
|
ste->htbl->ctrl.num_of_collisions++;
|
|
ste->htbl->ctrl.num_of_valid_entries++;
|
|
|
|
return new_ste;
|
|
|
|
err_exit:
|
|
mlx5dr_ste_free(new_ste, matcher, nic_matcher);
|
|
free_send_info:
|
|
kfree(ste_info);
|
|
return NULL;
|
|
}
|
|
|
|
static void dr_rule_remove_action_members(struct mlx5dr_rule *rule)
|
|
{
|
|
struct mlx5dr_rule_action_member *action_mem;
|
|
struct mlx5dr_rule_action_member *tmp;
|
|
|
|
list_for_each_entry_safe(action_mem, tmp, &rule->rule_actions_list, list) {
|
|
list_del(&action_mem->list);
|
|
refcount_dec(&action_mem->action->refcount);
|
|
kvfree(action_mem);
|
|
}
|
|
}
|
|
|
|
static int dr_rule_add_action_members(struct mlx5dr_rule *rule,
|
|
size_t num_actions,
|
|
struct mlx5dr_action *actions[])
|
|
{
|
|
struct mlx5dr_rule_action_member *action_mem;
|
|
int i;
|
|
|
|
for (i = 0; i < num_actions; i++) {
|
|
action_mem = kvzalloc(sizeof(*action_mem), GFP_KERNEL);
|
|
if (!action_mem)
|
|
goto free_action_members;
|
|
|
|
action_mem->action = actions[i];
|
|
INIT_LIST_HEAD(&action_mem->list);
|
|
list_add_tail(&action_mem->list, &rule->rule_actions_list);
|
|
refcount_inc(&action_mem->action->refcount);
|
|
}
|
|
|
|
return 0;
|
|
|
|
free_action_members:
|
|
dr_rule_remove_action_members(rule);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* While the pointer of ste is no longer valid, like while moving ste to be
|
|
* the first in the miss_list, and to be in the origin table,
|
|
* all rule-members that are attached to this ste should update their ste member
|
|
* to the new pointer
|
|
*/
|
|
void mlx5dr_rule_update_rule_member(struct mlx5dr_ste *ste,
|
|
struct mlx5dr_ste *new_ste)
|
|
{
|
|
struct mlx5dr_rule_member *rule_mem;
|
|
|
|
if (!list_empty(&ste->rule_list))
|
|
list_for_each_entry(rule_mem, &ste->rule_list, use_ste_list)
|
|
rule_mem->ste = new_ste;
|
|
}
|
|
|
|
static void dr_rule_clean_rule_members(struct mlx5dr_rule *rule,
|
|
struct mlx5dr_rule_rx_tx *nic_rule)
|
|
{
|
|
struct mlx5dr_rule_member *rule_mem;
|
|
struct mlx5dr_rule_member *tmp_mem;
|
|
|
|
if (list_empty(&nic_rule->rule_members_list))
|
|
return;
|
|
list_for_each_entry_safe(rule_mem, tmp_mem, &nic_rule->rule_members_list, list) {
|
|
list_del(&rule_mem->list);
|
|
list_del(&rule_mem->use_ste_list);
|
|
mlx5dr_ste_put(rule_mem->ste, rule->matcher, nic_rule->nic_matcher);
|
|
kvfree(rule_mem);
|
|
}
|
|
}
|
|
|
|
static bool dr_rule_need_enlarge_hash(struct mlx5dr_ste_htbl *htbl,
|
|
struct mlx5dr_domain *dmn,
|
|
struct mlx5dr_domain_rx_tx *nic_dmn)
|
|
{
|
|
struct mlx5dr_ste_htbl_ctrl *ctrl = &htbl->ctrl;
|
|
|
|
if (dmn->info.max_log_sw_icm_sz <= htbl->chunk_size)
|
|
return false;
|
|
|
|
if (!ctrl->may_grow)
|
|
return false;
|
|
|
|
if (ctrl->num_of_collisions >= ctrl->increase_threshold &&
|
|
(ctrl->num_of_valid_entries - ctrl->num_of_collisions) >= ctrl->increase_threshold)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static int dr_rule_add_member(struct mlx5dr_rule_rx_tx *nic_rule,
|
|
struct mlx5dr_ste *ste)
|
|
{
|
|
struct mlx5dr_rule_member *rule_mem;
|
|
|
|
rule_mem = kvzalloc(sizeof(*rule_mem), GFP_KERNEL);
|
|
if (!rule_mem)
|
|
return -ENOMEM;
|
|
|
|
rule_mem->ste = ste;
|
|
list_add_tail(&rule_mem->list, &nic_rule->rule_members_list);
|
|
|
|
list_add_tail(&rule_mem->use_ste_list, &ste->rule_list);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dr_rule_handle_action_stes(struct mlx5dr_rule *rule,
|
|
struct mlx5dr_rule_rx_tx *nic_rule,
|
|
struct list_head *send_ste_list,
|
|
struct mlx5dr_ste *last_ste,
|
|
u8 *hw_ste_arr,
|
|
u32 new_hw_ste_arr_sz)
|
|
{
|
|
struct mlx5dr_matcher_rx_tx *nic_matcher = nic_rule->nic_matcher;
|
|
struct mlx5dr_ste_send_info *ste_info_arr[DR_ACTION_MAX_STES];
|
|
u8 num_of_builders = nic_matcher->num_of_builders;
|
|
struct mlx5dr_matcher *matcher = rule->matcher;
|
|
u8 *curr_hw_ste, *prev_hw_ste;
|
|
struct mlx5dr_ste *action_ste;
|
|
int i, k, ret;
|
|
|
|
/* Two cases:
|
|
* 1. num_of_builders is equal to new_hw_ste_arr_sz, the action in the ste
|
|
* 2. num_of_builders is less then new_hw_ste_arr_sz, new ste was added
|
|
* to support the action.
|
|
*/
|
|
if (num_of_builders == new_hw_ste_arr_sz)
|
|
return 0;
|
|
|
|
for (i = num_of_builders, k = 0; i < new_hw_ste_arr_sz; i++, k++) {
|
|
curr_hw_ste = hw_ste_arr + i * DR_STE_SIZE;
|
|
prev_hw_ste = (i == 0) ? curr_hw_ste : hw_ste_arr + ((i - 1) * DR_STE_SIZE);
|
|
action_ste = dr_rule_create_collision_htbl(matcher,
|
|
nic_matcher,
|
|
curr_hw_ste);
|
|
if (!action_ste)
|
|
return -ENOMEM;
|
|
|
|
mlx5dr_ste_get(action_ste);
|
|
|
|
/* While free ste we go over the miss list, so add this ste to the list */
|
|
list_add_tail(&action_ste->miss_list_node,
|
|
mlx5dr_ste_get_miss_list(action_ste));
|
|
|
|
ste_info_arr[k] = kzalloc(sizeof(*ste_info_arr[k]),
|
|
GFP_KERNEL);
|
|
if (!ste_info_arr[k])
|
|
goto err_exit;
|
|
|
|
/* Point current ste to the new action */
|
|
mlx5dr_ste_set_hit_addr_by_next_htbl(prev_hw_ste, action_ste->htbl);
|
|
ret = dr_rule_add_member(nic_rule, action_ste);
|
|
if (ret) {
|
|
mlx5dr_dbg(matcher->tbl->dmn, "Failed adding rule member\n");
|
|
goto free_ste_info;
|
|
}
|
|
mlx5dr_send_fill_and_append_ste_send_info(action_ste, DR_STE_SIZE, 0,
|
|
curr_hw_ste,
|
|
ste_info_arr[k],
|
|
send_ste_list, false);
|
|
}
|
|
|
|
return 0;
|
|
|
|
free_ste_info:
|
|
kfree(ste_info_arr[k]);
|
|
err_exit:
|
|
mlx5dr_ste_put(action_ste, matcher, nic_matcher);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static int dr_rule_handle_empty_entry(struct mlx5dr_matcher *matcher,
|
|
struct mlx5dr_matcher_rx_tx *nic_matcher,
|
|
struct mlx5dr_ste_htbl *cur_htbl,
|
|
struct mlx5dr_ste *ste,
|
|
u8 ste_location,
|
|
u8 *hw_ste,
|
|
struct list_head *miss_list,
|
|
struct list_head *send_list)
|
|
{
|
|
struct mlx5dr_ste_send_info *ste_info;
|
|
|
|
/* Take ref on table, only on first time this ste is used */
|
|
mlx5dr_htbl_get(cur_htbl);
|
|
|
|
/* new entry -> new branch */
|
|
list_add_tail(&ste->miss_list_node, miss_list);
|
|
|
|
mlx5dr_ste_set_miss_addr(hw_ste, nic_matcher->e_anchor->chunk->icm_addr);
|
|
|
|
ste->ste_chain_location = ste_location;
|
|
|
|
ste_info = kzalloc(sizeof(*ste_info), GFP_KERNEL);
|
|
if (!ste_info)
|
|
goto clean_ste_setting;
|
|
|
|
if (mlx5dr_ste_create_next_htbl(matcher,
|
|
nic_matcher,
|
|
ste,
|
|
hw_ste,
|
|
DR_CHUNK_SIZE_1)) {
|
|
mlx5dr_dbg(matcher->tbl->dmn, "Failed allocating table\n");
|
|
goto clean_ste_info;
|
|
}
|
|
|
|
cur_htbl->ctrl.num_of_valid_entries++;
|
|
|
|
mlx5dr_send_fill_and_append_ste_send_info(ste, DR_STE_SIZE, 0, hw_ste,
|
|
ste_info, send_list, false);
|
|
|
|
return 0;
|
|
|
|
clean_ste_info:
|
|
kfree(ste_info);
|
|
clean_ste_setting:
|
|
list_del_init(&ste->miss_list_node);
|
|
mlx5dr_htbl_put(cur_htbl);
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static struct mlx5dr_ste *
|
|
dr_rule_handle_ste_branch(struct mlx5dr_rule *rule,
|
|
struct mlx5dr_rule_rx_tx *nic_rule,
|
|
struct list_head *send_ste_list,
|
|
struct mlx5dr_ste_htbl *cur_htbl,
|
|
u8 *hw_ste,
|
|
u8 ste_location,
|
|
struct mlx5dr_ste_htbl **put_htbl)
|
|
{
|
|
struct mlx5dr_matcher *matcher = rule->matcher;
|
|
struct mlx5dr_domain *dmn = matcher->tbl->dmn;
|
|
struct mlx5dr_matcher_rx_tx *nic_matcher;
|
|
struct mlx5dr_domain_rx_tx *nic_dmn;
|
|
struct mlx5dr_ste_htbl *new_htbl;
|
|
struct mlx5dr_ste *matched_ste;
|
|
struct list_head *miss_list;
|
|
bool skip_rehash = false;
|
|
struct mlx5dr_ste *ste;
|
|
int index;
|
|
|
|
nic_matcher = nic_rule->nic_matcher;
|
|
nic_dmn = nic_matcher->nic_tbl->nic_dmn;
|
|
|
|
again:
|
|
index = mlx5dr_ste_calc_hash_index(hw_ste, cur_htbl);
|
|
miss_list = &cur_htbl->chunk->miss_list[index];
|
|
ste = &cur_htbl->ste_arr[index];
|
|
|
|
if (mlx5dr_ste_not_used_ste(ste)) {
|
|
if (dr_rule_handle_empty_entry(matcher, nic_matcher, cur_htbl,
|
|
ste, ste_location,
|
|
hw_ste, miss_list,
|
|
send_ste_list))
|
|
return NULL;
|
|
} else {
|
|
/* Hash table index in use, check if this ste is in the miss list */
|
|
matched_ste = dr_rule_find_ste_in_miss_list(miss_list, hw_ste);
|
|
if (matched_ste) {
|
|
/* If it is last STE in the chain, and has the same tag
|
|
* it means that all the previous stes are the same,
|
|
* if so, this rule is duplicated.
|
|
*/
|
|
if (!mlx5dr_ste_is_last_in_rule(nic_matcher, ste_location))
|
|
return matched_ste;
|
|
|
|
mlx5dr_dbg(dmn, "Duplicate rule inserted\n");
|
|
}
|
|
|
|
if (!skip_rehash && dr_rule_need_enlarge_hash(cur_htbl, dmn, nic_dmn)) {
|
|
/* Hash table index in use, try to resize of the hash */
|
|
skip_rehash = true;
|
|
|
|
/* Hold the table till we update.
|
|
* Release in dr_rule_create_rule()
|
|
*/
|
|
*put_htbl = cur_htbl;
|
|
mlx5dr_htbl_get(cur_htbl);
|
|
|
|
new_htbl = dr_rule_rehash(rule, nic_rule, cur_htbl,
|
|
ste_location, send_ste_list);
|
|
if (!new_htbl) {
|
|
mlx5dr_htbl_put(cur_htbl);
|
|
mlx5dr_info(dmn, "failed creating rehash table, htbl-log_size: %d\n",
|
|
cur_htbl->chunk_size);
|
|
} else {
|
|
cur_htbl = new_htbl;
|
|
}
|
|
goto again;
|
|
} else {
|
|
/* Hash table index in use, add another collision (miss) */
|
|
ste = dr_rule_handle_collision(matcher,
|
|
nic_matcher,
|
|
ste,
|
|
hw_ste,
|
|
miss_list,
|
|
send_ste_list);
|
|
if (!ste) {
|
|
mlx5dr_dbg(dmn, "failed adding collision entry, index: %d\n",
|
|
index);
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
return ste;
|
|
}
|
|
|
|
static bool dr_rule_cmp_value_to_mask(u8 *mask, u8 *value,
|
|
u32 s_idx, u32 e_idx)
|
|
{
|
|
u32 i;
|
|
|
|
for (i = s_idx; i < e_idx; i++) {
|
|
if (value[i] & ~mask[i]) {
|
|
pr_info("Rule parameters contains a value not specified by mask\n");
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool dr_rule_verify(struct mlx5dr_matcher *matcher,
|
|
struct mlx5dr_match_parameters *value,
|
|
struct mlx5dr_match_param *param)
|
|
{
|
|
u8 match_criteria = matcher->match_criteria;
|
|
size_t value_size = value->match_sz;
|
|
u8 *mask_p = (u8 *)&matcher->mask;
|
|
u8 *param_p = (u8 *)param;
|
|
u32 s_idx, e_idx;
|
|
|
|
if (!value_size ||
|
|
(value_size > sizeof(struct mlx5dr_match_param) ||
|
|
(value_size % sizeof(u32)))) {
|
|
mlx5dr_dbg(matcher->tbl->dmn, "Rule parameters length is incorrect\n");
|
|
return false;
|
|
}
|
|
|
|
mlx5dr_ste_copy_param(matcher->match_criteria, param, value);
|
|
|
|
if (match_criteria & DR_MATCHER_CRITERIA_OUTER) {
|
|
s_idx = offsetof(struct mlx5dr_match_param, outer);
|
|
e_idx = min(s_idx + sizeof(param->outer), value_size);
|
|
|
|
if (!dr_rule_cmp_value_to_mask(mask_p, param_p, s_idx, e_idx)) {
|
|
mlx5dr_dbg(matcher->tbl->dmn, "Rule outer parameters contains a value not specified by mask\n");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (match_criteria & DR_MATCHER_CRITERIA_MISC) {
|
|
s_idx = offsetof(struct mlx5dr_match_param, misc);
|
|
e_idx = min(s_idx + sizeof(param->misc), value_size);
|
|
|
|
if (!dr_rule_cmp_value_to_mask(mask_p, param_p, s_idx, e_idx)) {
|
|
mlx5dr_dbg(matcher->tbl->dmn, "Rule misc parameters contains a value not specified by mask\n");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (match_criteria & DR_MATCHER_CRITERIA_INNER) {
|
|
s_idx = offsetof(struct mlx5dr_match_param, inner);
|
|
e_idx = min(s_idx + sizeof(param->inner), value_size);
|
|
|
|
if (!dr_rule_cmp_value_to_mask(mask_p, param_p, s_idx, e_idx)) {
|
|
mlx5dr_dbg(matcher->tbl->dmn, "Rule inner parameters contains a value not specified by mask\n");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (match_criteria & DR_MATCHER_CRITERIA_MISC2) {
|
|
s_idx = offsetof(struct mlx5dr_match_param, misc2);
|
|
e_idx = min(s_idx + sizeof(param->misc2), value_size);
|
|
|
|
if (!dr_rule_cmp_value_to_mask(mask_p, param_p, s_idx, e_idx)) {
|
|
mlx5dr_dbg(matcher->tbl->dmn, "Rule misc2 parameters contains a value not specified by mask\n");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (match_criteria & DR_MATCHER_CRITERIA_MISC3) {
|
|
s_idx = offsetof(struct mlx5dr_match_param, misc3);
|
|
e_idx = min(s_idx + sizeof(param->misc3), value_size);
|
|
|
|
if (!dr_rule_cmp_value_to_mask(mask_p, param_p, s_idx, e_idx)) {
|
|
mlx5dr_dbg(matcher->tbl->dmn, "Rule misc3 parameters contains a value not specified by mask\n");
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static int dr_rule_destroy_rule_nic(struct mlx5dr_rule *rule,
|
|
struct mlx5dr_rule_rx_tx *nic_rule)
|
|
{
|
|
dr_rule_clean_rule_members(rule, nic_rule);
|
|
return 0;
|
|
}
|
|
|
|
static int dr_rule_destroy_rule_fdb(struct mlx5dr_rule *rule)
|
|
{
|
|
dr_rule_destroy_rule_nic(rule, &rule->rx);
|
|
dr_rule_destroy_rule_nic(rule, &rule->tx);
|
|
return 0;
|
|
}
|
|
|
|
static int dr_rule_destroy_rule(struct mlx5dr_rule *rule)
|
|
{
|
|
struct mlx5dr_domain *dmn = rule->matcher->tbl->dmn;
|
|
|
|
switch (dmn->type) {
|
|
case MLX5DR_DOMAIN_TYPE_NIC_RX:
|
|
dr_rule_destroy_rule_nic(rule, &rule->rx);
|
|
break;
|
|
case MLX5DR_DOMAIN_TYPE_NIC_TX:
|
|
dr_rule_destroy_rule_nic(rule, &rule->tx);
|
|
break;
|
|
case MLX5DR_DOMAIN_TYPE_FDB:
|
|
dr_rule_destroy_rule_fdb(rule);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
dr_rule_remove_action_members(rule);
|
|
kfree(rule);
|
|
return 0;
|
|
}
|
|
|
|
static bool dr_rule_is_ipv6(struct mlx5dr_match_param *param)
|
|
{
|
|
return (param->outer.ip_version == 6 ||
|
|
param->inner.ip_version == 6 ||
|
|
param->outer.ethertype == ETH_P_IPV6 ||
|
|
param->inner.ethertype == ETH_P_IPV6);
|
|
}
|
|
|
|
static bool dr_rule_skip(enum mlx5dr_domain_type domain,
|
|
enum mlx5dr_ste_entry_type ste_type,
|
|
struct mlx5dr_match_param *mask,
|
|
struct mlx5dr_match_param *value)
|
|
{
|
|
if (domain != MLX5DR_DOMAIN_TYPE_FDB)
|
|
return false;
|
|
|
|
if (mask->misc.source_port) {
|
|
if (ste_type == MLX5DR_STE_TYPE_RX)
|
|
if (value->misc.source_port != WIRE_PORT)
|
|
return true;
|
|
|
|
if (ste_type == MLX5DR_STE_TYPE_TX)
|
|
if (value->misc.source_port == WIRE_PORT)
|
|
return true;
|
|
}
|
|
|
|
/* Metadata C can be used to describe the source vport */
|
|
if (mask->misc2.metadata_reg_c_0) {
|
|
if (ste_type == MLX5DR_STE_TYPE_RX)
|
|
if ((value->misc2.metadata_reg_c_0 & WIRE_PORT) != WIRE_PORT)
|
|
return true;
|
|
|
|
if (ste_type == MLX5DR_STE_TYPE_TX)
|
|
if ((value->misc2.metadata_reg_c_0 & WIRE_PORT) == WIRE_PORT)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static int
|
|
dr_rule_create_rule_nic(struct mlx5dr_rule *rule,
|
|
struct mlx5dr_rule_rx_tx *nic_rule,
|
|
struct mlx5dr_match_param *param,
|
|
size_t num_actions,
|
|
struct mlx5dr_action *actions[])
|
|
{
|
|
struct mlx5dr_ste_send_info *ste_info, *tmp_ste_info;
|
|
struct mlx5dr_matcher *matcher = rule->matcher;
|
|
struct mlx5dr_domain *dmn = matcher->tbl->dmn;
|
|
struct mlx5dr_matcher_rx_tx *nic_matcher;
|
|
struct mlx5dr_domain_rx_tx *nic_dmn;
|
|
struct mlx5dr_ste_htbl *htbl = NULL;
|
|
struct mlx5dr_ste_htbl *cur_htbl;
|
|
struct mlx5dr_ste *ste = NULL;
|
|
LIST_HEAD(send_ste_list);
|
|
u8 *hw_ste_arr = NULL;
|
|
u32 new_hw_ste_arr_sz;
|
|
int ret, i;
|
|
|
|
nic_matcher = nic_rule->nic_matcher;
|
|
nic_dmn = nic_matcher->nic_tbl->nic_dmn;
|
|
|
|
INIT_LIST_HEAD(&nic_rule->rule_members_list);
|
|
|
|
if (dr_rule_skip(dmn->type, nic_dmn->ste_type, &matcher->mask, param))
|
|
return 0;
|
|
|
|
ret = mlx5dr_matcher_select_builders(matcher,
|
|
nic_matcher,
|
|
dr_rule_is_ipv6(param));
|
|
if (ret)
|
|
goto out_err;
|
|
|
|
hw_ste_arr = kzalloc(DR_RULE_MAX_STE_CHAIN * DR_STE_SIZE, GFP_KERNEL);
|
|
if (!hw_ste_arr) {
|
|
ret = -ENOMEM;
|
|
goto out_err;
|
|
}
|
|
|
|
/* Set the tag values inside the ste array */
|
|
ret = mlx5dr_ste_build_ste_arr(matcher, nic_matcher, param, hw_ste_arr);
|
|
if (ret)
|
|
goto free_hw_ste;
|
|
|
|
/* Set the actions values/addresses inside the ste array */
|
|
ret = mlx5dr_actions_build_ste_arr(matcher, nic_matcher, actions,
|
|
num_actions, hw_ste_arr,
|
|
&new_hw_ste_arr_sz);
|
|
if (ret)
|
|
goto free_hw_ste;
|
|
|
|
cur_htbl = nic_matcher->s_htbl;
|
|
|
|
/* Go over the array of STEs, and build dr_ste accordingly.
|
|
* The loop is over only the builders which are equal or less to the
|
|
* number of stes, in case we have actions that lives in other stes.
|
|
*/
|
|
for (i = 0; i < nic_matcher->num_of_builders; i++) {
|
|
/* Calculate CRC and keep new ste entry */
|
|
u8 *cur_hw_ste_ent = hw_ste_arr + (i * DR_STE_SIZE);
|
|
|
|
ste = dr_rule_handle_ste_branch(rule,
|
|
nic_rule,
|
|
&send_ste_list,
|
|
cur_htbl,
|
|
cur_hw_ste_ent,
|
|
i + 1,
|
|
&htbl);
|
|
if (!ste) {
|
|
mlx5dr_err(dmn, "Failed creating next branch\n");
|
|
ret = -ENOENT;
|
|
goto free_rule;
|
|
}
|
|
|
|
cur_htbl = ste->next_htbl;
|
|
|
|
/* Keep all STEs in the rule struct */
|
|
ret = dr_rule_add_member(nic_rule, ste);
|
|
if (ret) {
|
|
mlx5dr_dbg(dmn, "Failed adding rule member index %d\n", i);
|
|
goto free_ste;
|
|
}
|
|
|
|
mlx5dr_ste_get(ste);
|
|
}
|
|
|
|
/* Connect actions */
|
|
ret = dr_rule_handle_action_stes(rule, nic_rule, &send_ste_list,
|
|
ste, hw_ste_arr, new_hw_ste_arr_sz);
|
|
if (ret) {
|
|
mlx5dr_dbg(dmn, "Failed apply actions\n");
|
|
goto free_rule;
|
|
}
|
|
ret = dr_rule_send_update_list(&send_ste_list, dmn, true);
|
|
if (ret) {
|
|
mlx5dr_err(dmn, "Failed sending ste!\n");
|
|
goto free_rule;
|
|
}
|
|
|
|
if (htbl)
|
|
mlx5dr_htbl_put(htbl);
|
|
|
|
kfree(hw_ste_arr);
|
|
|
|
return 0;
|
|
|
|
free_ste:
|
|
mlx5dr_ste_put(ste, matcher, nic_matcher);
|
|
free_rule:
|
|
dr_rule_clean_rule_members(rule, nic_rule);
|
|
/* Clean all ste_info's */
|
|
list_for_each_entry_safe(ste_info, tmp_ste_info, &send_ste_list, send_list) {
|
|
list_del(&ste_info->send_list);
|
|
kfree(ste_info);
|
|
}
|
|
free_hw_ste:
|
|
kfree(hw_ste_arr);
|
|
out_err:
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
dr_rule_create_rule_fdb(struct mlx5dr_rule *rule,
|
|
struct mlx5dr_match_param *param,
|
|
size_t num_actions,
|
|
struct mlx5dr_action *actions[])
|
|
{
|
|
struct mlx5dr_match_param copy_param = {};
|
|
int ret;
|
|
|
|
/* Copy match_param since they will be consumed during the first
|
|
* nic_rule insertion.
|
|
*/
|
|
memcpy(©_param, param, sizeof(struct mlx5dr_match_param));
|
|
|
|
ret = dr_rule_create_rule_nic(rule, &rule->rx, param,
|
|
num_actions, actions);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = dr_rule_create_rule_nic(rule, &rule->tx, ©_param,
|
|
num_actions, actions);
|
|
if (ret)
|
|
goto destroy_rule_nic_rx;
|
|
|
|
return 0;
|
|
|
|
destroy_rule_nic_rx:
|
|
dr_rule_destroy_rule_nic(rule, &rule->rx);
|
|
return ret;
|
|
}
|
|
|
|
static struct mlx5dr_rule *
|
|
dr_rule_create_rule(struct mlx5dr_matcher *matcher,
|
|
struct mlx5dr_match_parameters *value,
|
|
size_t num_actions,
|
|
struct mlx5dr_action *actions[])
|
|
{
|
|
struct mlx5dr_domain *dmn = matcher->tbl->dmn;
|
|
struct mlx5dr_match_param param = {};
|
|
struct mlx5dr_rule *rule;
|
|
int ret;
|
|
|
|
if (!dr_rule_verify(matcher, value, ¶m))
|
|
return NULL;
|
|
|
|
rule = kzalloc(sizeof(*rule), GFP_KERNEL);
|
|
if (!rule)
|
|
return NULL;
|
|
|
|
rule->matcher = matcher;
|
|
INIT_LIST_HEAD(&rule->rule_actions_list);
|
|
|
|
ret = dr_rule_add_action_members(rule, num_actions, actions);
|
|
if (ret)
|
|
goto free_rule;
|
|
|
|
switch (dmn->type) {
|
|
case MLX5DR_DOMAIN_TYPE_NIC_RX:
|
|
rule->rx.nic_matcher = &matcher->rx;
|
|
ret = dr_rule_create_rule_nic(rule, &rule->rx, ¶m,
|
|
num_actions, actions);
|
|
break;
|
|
case MLX5DR_DOMAIN_TYPE_NIC_TX:
|
|
rule->tx.nic_matcher = &matcher->tx;
|
|
ret = dr_rule_create_rule_nic(rule, &rule->tx, ¶m,
|
|
num_actions, actions);
|
|
break;
|
|
case MLX5DR_DOMAIN_TYPE_FDB:
|
|
rule->rx.nic_matcher = &matcher->rx;
|
|
rule->tx.nic_matcher = &matcher->tx;
|
|
ret = dr_rule_create_rule_fdb(rule, ¶m,
|
|
num_actions, actions);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
if (ret)
|
|
goto remove_action_members;
|
|
|
|
return rule;
|
|
|
|
remove_action_members:
|
|
dr_rule_remove_action_members(rule);
|
|
free_rule:
|
|
kfree(rule);
|
|
mlx5dr_info(dmn, "Failed creating rule\n");
|
|
return NULL;
|
|
}
|
|
|
|
struct mlx5dr_rule *mlx5dr_rule_create(struct mlx5dr_matcher *matcher,
|
|
struct mlx5dr_match_parameters *value,
|
|
size_t num_actions,
|
|
struct mlx5dr_action *actions[])
|
|
{
|
|
struct mlx5dr_rule *rule;
|
|
|
|
mutex_lock(&matcher->tbl->dmn->mutex);
|
|
refcount_inc(&matcher->refcount);
|
|
|
|
rule = dr_rule_create_rule(matcher, value, num_actions, actions);
|
|
if (!rule)
|
|
refcount_dec(&matcher->refcount);
|
|
|
|
mutex_unlock(&matcher->tbl->dmn->mutex);
|
|
|
|
return rule;
|
|
}
|
|
|
|
int mlx5dr_rule_destroy(struct mlx5dr_rule *rule)
|
|
{
|
|
struct mlx5dr_matcher *matcher = rule->matcher;
|
|
struct mlx5dr_table *tbl = rule->matcher->tbl;
|
|
int ret;
|
|
|
|
mutex_lock(&tbl->dmn->mutex);
|
|
|
|
ret = dr_rule_destroy_rule(rule);
|
|
|
|
mutex_unlock(&tbl->dmn->mutex);
|
|
|
|
if (!ret)
|
|
refcount_dec(&matcher->refcount);
|
|
return ret;
|
|
}
|