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Message-ID: <20240903031948.78006-8-saeed@kernel.org>
Date: Mon, 2 Sep 2024 20:19:38 -0700
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Eric Dumazet <edumazet@...gle.com>
Cc: Saeed Mahameed <saeedm@...dia.com>,
netdev@...r.kernel.org,
Tariq Toukan <tariqt@...dia.com>,
Gal Pressman <gal@...dia.com>,
Leon Romanovsky <leonro@...dia.com>,
Yevgeny Kliteynik <kliteyn@...dia.com>,
Itamar Gozlan <igozlan@...dia.com>,
Mark Bloch <mbloch@...dia.com>
Subject: [net-next 07/15] net/mlx5: HWS, added matchers functionality
From: Yevgeny Kliteynik <kliteyn@...dia.com>
Matcher object encompasses all the building blocks that are
needed in order to perform flow steering of a given flow:
- flow table that serves as entering point of this matcher
- Rule Table Context (RTC) objects to hold ll the Steering
Table Entries (STEs), both for matching the flow and for
performing actions
- rules that describe the set of matching parameters for a
flow and actions to perform in case of a hit.
This patch adds implementation of matchers handling in HWS.
Reviewed-by: Itamar Gozlan <igozlan@...dia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@...dia.com>
Reviewed-by: Mark Bloch <mbloch@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
.../mlx5/core/steering/hws/mlx5hws_matcher.c | 1216 +++++++++++++++++
.../mlx5/core/steering/hws/mlx5hws_matcher.h | 107 ++
2 files changed, 1323 insertions(+)
create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.c
create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.h
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.c
new file mode 100644
index 000000000000..8ea2e96cdebb
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.c
@@ -0,0 +1,1216 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
+/* Copyright (c) 2024 NVIDIA Corporation & Affiliates */
+
+#include "mlx5hws_internal.h"
+
+enum mlx5hws_matcher_rtc_type {
+ HWS_MATCHER_RTC_TYPE_MATCH,
+ HWS_MATCHER_RTC_TYPE_STE_ARRAY,
+ HWS_MATCHER_RTC_TYPE_MAX,
+};
+
+static const char * const mlx5hws_matcher_rtc_type_str[] = {
+ [HWS_MATCHER_RTC_TYPE_MATCH] = "MATCH",
+ [HWS_MATCHER_RTC_TYPE_STE_ARRAY] = "STE_ARRAY",
+ [HWS_MATCHER_RTC_TYPE_MAX] = "UNKNOWN",
+};
+
+static const char *hws_matcher_rtc_type_to_str(enum mlx5hws_matcher_rtc_type rtc_type)
+{
+ if (rtc_type > HWS_MATCHER_RTC_TYPE_MAX)
+ rtc_type = HWS_MATCHER_RTC_TYPE_MAX;
+ return mlx5hws_matcher_rtc_type_str[rtc_type];
+}
+
+static bool hws_matcher_requires_col_tbl(u8 log_num_of_rules)
+{
+ /* Collision table concatenation is done only for large rule tables */
+ return log_num_of_rules > MLX5HWS_MATCHER_ASSURED_RULES_TH;
+}
+
+static u8 hws_matcher_rules_to_tbl_depth(u8 log_num_of_rules)
+{
+ if (hws_matcher_requires_col_tbl(log_num_of_rules))
+ return MLX5HWS_MATCHER_ASSURED_MAIN_TBL_DEPTH;
+
+ /* For small rule tables we use a single deep table to assure insertion */
+ return min(log_num_of_rules, MLX5HWS_MATCHER_ASSURED_COL_TBL_DEPTH);
+}
+
+static void hws_matcher_destroy_end_ft(struct mlx5hws_matcher *matcher)
+{
+ mlx5hws_table_destroy_default_ft(matcher->tbl, matcher->end_ft_id);
+}
+
+static int hws_matcher_create_end_ft(struct mlx5hws_matcher *matcher)
+{
+ struct mlx5hws_table *tbl = matcher->tbl;
+ int ret;
+
+ ret = mlx5hws_table_create_default_ft(tbl->ctx->mdev, tbl, &matcher->end_ft_id);
+ if (ret) {
+ mlx5hws_err(tbl->ctx, "Failed to create matcher end flow table\n");
+ return ret;
+ }
+ return 0;
+}
+
+static int hws_matcher_connect(struct mlx5hws_matcher *matcher)
+{
+ struct mlx5hws_table *tbl = matcher->tbl;
+ struct mlx5hws_context *ctx = tbl->ctx;
+ struct mlx5hws_matcher *prev = NULL;
+ struct mlx5hws_matcher *next = NULL;
+ struct mlx5hws_matcher *tmp_matcher;
+ int ret;
+
+ /* Find location in matcher list */
+ if (list_empty(&tbl->matchers_list)) {
+ list_add(&matcher->list_node, &tbl->matchers_list);
+ goto connect;
+ }
+
+ list_for_each_entry(tmp_matcher, &tbl->matchers_list, list_node) {
+ if (tmp_matcher->attr.priority > matcher->attr.priority) {
+ next = tmp_matcher;
+ break;
+ }
+ prev = tmp_matcher;
+ }
+
+ if (next)
+ /* insert before next */
+ list_add_tail(&matcher->list_node, &next->list_node);
+ else
+ /* insert after prev */
+ list_add(&matcher->list_node, &prev->list_node);
+
+connect:
+ if (next) {
+ /* Connect to next RTC */
+ ret = mlx5hws_table_ft_set_next_rtc(ctx,
+ matcher->end_ft_id,
+ tbl->fw_ft_type,
+ next->match_ste.rtc_0_id,
+ next->match_ste.rtc_1_id);
+ if (ret) {
+ mlx5hws_err(ctx, "Failed to connect new matcher to next RTC\n");
+ goto remove_from_list;
+ }
+ } else {
+ /* Connect last matcher to next miss_tbl if exists */
+ ret = mlx5hws_table_connect_to_miss_table(tbl, tbl->default_miss.miss_tbl);
+ if (ret) {
+ mlx5hws_err(ctx, "Failed connect new matcher to miss_tbl\n");
+ goto remove_from_list;
+ }
+ }
+
+ /* Connect to previous FT */
+ ret = mlx5hws_table_ft_set_next_rtc(ctx,
+ prev ? prev->end_ft_id : tbl->ft_id,
+ tbl->fw_ft_type,
+ matcher->match_ste.rtc_0_id,
+ matcher->match_ste.rtc_1_id);
+ if (ret) {
+ mlx5hws_err(ctx, "Failed to connect new matcher to previous FT\n");
+ goto remove_from_list;
+ }
+
+ /* Reset prev matcher FT default miss (drop refcount) */
+ ret = mlx5hws_table_ft_set_default_next_ft(tbl, prev ? prev->end_ft_id : tbl->ft_id);
+ if (ret) {
+ mlx5hws_err(ctx, "Failed to reset matcher ft default miss\n");
+ goto remove_from_list;
+ }
+
+ if (!prev) {
+ /* Update tables missing to current matcher in the table */
+ ret = mlx5hws_table_update_connected_miss_tables(tbl);
+ if (ret) {
+ mlx5hws_err(ctx, "Fatal error, failed to update connected miss table\n");
+ goto remove_from_list;
+ }
+ }
+
+ return 0;
+
+remove_from_list:
+ list_del_init(&matcher->list_node);
+ return ret;
+}
+
+static int hws_matcher_disconnect(struct mlx5hws_matcher *matcher)
+{
+ struct mlx5hws_matcher *next = NULL, *prev = NULL;
+ struct mlx5hws_table *tbl = matcher->tbl;
+ u32 prev_ft_id = tbl->ft_id;
+ int ret;
+
+ if (!list_is_first(&matcher->list_node, &tbl->matchers_list)) {
+ prev = list_prev_entry(matcher, list_node);
+ prev_ft_id = prev->end_ft_id;
+ }
+
+ if (!list_is_last(&matcher->list_node, &tbl->matchers_list))
+ next = list_next_entry(matcher, list_node);
+
+ list_del_init(&matcher->list_node);
+
+ if (next) {
+ /* Connect previous end FT to next RTC */
+ ret = mlx5hws_table_ft_set_next_rtc(tbl->ctx,
+ prev_ft_id,
+ tbl->fw_ft_type,
+ next->match_ste.rtc_0_id,
+ next->match_ste.rtc_1_id);
+ if (ret) {
+ mlx5hws_err(tbl->ctx, "Failed to disconnect matcher\n");
+ goto matcher_reconnect;
+ }
+ } else {
+ ret = mlx5hws_table_connect_to_miss_table(tbl, tbl->default_miss.miss_tbl);
+ if (ret) {
+ mlx5hws_err(tbl->ctx, "Failed to disconnect last matcher\n");
+ goto matcher_reconnect;
+ }
+ }
+
+ /* Removing first matcher, update connected miss tables if exists */
+ if (prev_ft_id == tbl->ft_id) {
+ ret = mlx5hws_table_update_connected_miss_tables(tbl);
+ if (ret) {
+ mlx5hws_err(tbl->ctx, "Fatal error, failed to update connected miss table\n");
+ goto matcher_reconnect;
+ }
+ }
+
+ ret = mlx5hws_table_ft_set_default_next_ft(tbl, prev_ft_id);
+ if (ret) {
+ mlx5hws_err(tbl->ctx, "Fatal error, failed to restore matcher ft default miss\n");
+ goto matcher_reconnect;
+ }
+
+ return 0;
+
+matcher_reconnect:
+ if (list_empty(&tbl->matchers_list) || !prev)
+ list_add(&matcher->list_node, &tbl->matchers_list);
+ else
+ /* insert after prev matcher */
+ list_add(&matcher->list_node, &prev->list_node);
+
+ return ret;
+}
+
+static void hws_matcher_set_rtc_attr_sz(struct mlx5hws_matcher *matcher,
+ struct mlx5hws_cmd_rtc_create_attr *rtc_attr,
+ enum mlx5hws_matcher_rtc_type rtc_type,
+ bool is_mirror)
+{
+ struct mlx5hws_pool_chunk *ste = &matcher->action_ste[MLX5HWS_ACTION_STE_IDX_ANY].ste;
+ enum mlx5hws_matcher_flow_src flow_src = matcher->attr.optimize_flow_src;
+ bool is_match_rtc = rtc_type == HWS_MATCHER_RTC_TYPE_MATCH;
+
+ if ((flow_src == MLX5HWS_MATCHER_FLOW_SRC_VPORT && !is_mirror) ||
+ (flow_src == MLX5HWS_MATCHER_FLOW_SRC_WIRE && is_mirror)) {
+ /* Optimize FDB RTC */
+ rtc_attr->log_size = 0;
+ rtc_attr->log_depth = 0;
+ } else {
+ /* Keep original values */
+ rtc_attr->log_size = is_match_rtc ? matcher->attr.table.sz_row_log : ste->order;
+ rtc_attr->log_depth = is_match_rtc ? matcher->attr.table.sz_col_log : 0;
+ }
+}
+
+static int hws_matcher_create_rtc(struct mlx5hws_matcher *matcher,
+ enum mlx5hws_matcher_rtc_type rtc_type,
+ u8 action_ste_selector)
+{
+ struct mlx5hws_matcher_attr *attr = &matcher->attr;
+ struct mlx5hws_cmd_rtc_create_attr rtc_attr = {0};
+ struct mlx5hws_match_template *mt = matcher->mt;
+ struct mlx5hws_context *ctx = matcher->tbl->ctx;
+ struct mlx5hws_action_default_stc *default_stc;
+ struct mlx5hws_matcher_action_ste *action_ste;
+ struct mlx5hws_table *tbl = matcher->tbl;
+ struct mlx5hws_pool *ste_pool, *stc_pool;
+ struct mlx5hws_pool_chunk *ste;
+ u32 *rtc_0_id, *rtc_1_id;
+ u32 obj_id;
+ int ret;
+
+ switch (rtc_type) {
+ case HWS_MATCHER_RTC_TYPE_MATCH:
+ rtc_0_id = &matcher->match_ste.rtc_0_id;
+ rtc_1_id = &matcher->match_ste.rtc_1_id;
+ ste_pool = matcher->match_ste.pool;
+ ste = &matcher->match_ste.ste;
+ ste->order = attr->table.sz_col_log + attr->table.sz_row_log;
+
+ rtc_attr.log_size = attr->table.sz_row_log;
+ rtc_attr.log_depth = attr->table.sz_col_log;
+ rtc_attr.is_frst_jumbo = mlx5hws_matcher_mt_is_jumbo(mt);
+ rtc_attr.is_scnd_range = 0;
+ rtc_attr.miss_ft_id = matcher->end_ft_id;
+
+ if (attr->insert_mode == MLX5HWS_MATCHER_INSERT_BY_HASH) {
+ /* The usual Hash Table */
+ rtc_attr.update_index_mode = MLX5_IFC_RTC_STE_UPDATE_MODE_BY_HASH;
+
+ /* The first mt is used since all share the same definer */
+ rtc_attr.match_definer_0 = mlx5hws_definer_get_id(mt->definer);
+ } else if (attr->insert_mode == MLX5HWS_MATCHER_INSERT_BY_INDEX) {
+ rtc_attr.update_index_mode = MLX5_IFC_RTC_STE_UPDATE_MODE_BY_OFFSET;
+ rtc_attr.num_hash_definer = 1;
+
+ if (attr->distribute_mode == MLX5HWS_MATCHER_DISTRIBUTE_BY_HASH) {
+ /* Hash Split Table */
+ rtc_attr.access_index_mode = MLX5_IFC_RTC_STE_ACCESS_MODE_BY_HASH;
+ rtc_attr.match_definer_0 = mlx5hws_definer_get_id(mt->definer);
+ } else if (attr->distribute_mode == MLX5HWS_MATCHER_DISTRIBUTE_BY_LINEAR) {
+ /* Linear Lookup Table */
+ rtc_attr.access_index_mode = MLX5_IFC_RTC_STE_ACCESS_MODE_LINEAR;
+ rtc_attr.match_definer_0 = ctx->caps->linear_match_definer;
+ }
+ }
+
+ /* Match pool requires implicit allocation */
+ ret = mlx5hws_pool_chunk_alloc(ste_pool, ste);
+ if (ret) {
+ mlx5hws_err(ctx, "Failed to allocate STE for %s RTC",
+ hws_matcher_rtc_type_to_str(rtc_type));
+ return ret;
+ }
+ break;
+
+ case HWS_MATCHER_RTC_TYPE_STE_ARRAY:
+ action_ste = &matcher->action_ste[action_ste_selector];
+
+ rtc_0_id = &action_ste->rtc_0_id;
+ rtc_1_id = &action_ste->rtc_1_id;
+ ste_pool = action_ste->pool;
+ ste = &action_ste->ste;
+ ste->order = ilog2(roundup_pow_of_two(action_ste->max_stes)) +
+ attr->table.sz_row_log;
+ rtc_attr.log_size = ste->order;
+ rtc_attr.log_depth = 0;
+ rtc_attr.update_index_mode = MLX5_IFC_RTC_STE_UPDATE_MODE_BY_OFFSET;
+ /* The action STEs use the default always hit definer */
+ rtc_attr.match_definer_0 = ctx->caps->trivial_match_definer;
+ rtc_attr.is_frst_jumbo = false;
+ rtc_attr.miss_ft_id = 0;
+ break;
+
+ default:
+ mlx5hws_err(ctx, "HWS Invalid RTC type\n");
+ return -EINVAL;
+ }
+
+ obj_id = mlx5hws_pool_chunk_get_base_id(ste_pool, ste);
+
+ rtc_attr.pd = ctx->pd_num;
+ rtc_attr.ste_base = obj_id;
+ rtc_attr.ste_offset = ste->offset;
+ rtc_attr.reparse_mode = mlx5hws_context_get_reparse_mode(ctx);
+ rtc_attr.table_type = mlx5hws_table_get_res_fw_ft_type(tbl->type, false);
+ hws_matcher_set_rtc_attr_sz(matcher, &rtc_attr, rtc_type, false);
+
+ /* STC is a single resource (obj_id), use any STC for the ID */
+ stc_pool = ctx->stc_pool[tbl->type];
+ default_stc = ctx->common_res[tbl->type].default_stc;
+ obj_id = mlx5hws_pool_chunk_get_base_id(stc_pool, &default_stc->default_hit);
+ rtc_attr.stc_base = obj_id;
+
+ ret = mlx5hws_cmd_rtc_create(ctx->mdev, &rtc_attr, rtc_0_id);
+ if (ret) {
+ mlx5hws_err(ctx, "Failed to create matcher RTC of type %s",
+ hws_matcher_rtc_type_to_str(rtc_type));
+ goto free_ste;
+ }
+
+ if (tbl->type == MLX5HWS_TABLE_TYPE_FDB) {
+ obj_id = mlx5hws_pool_chunk_get_base_mirror_id(ste_pool, ste);
+ rtc_attr.ste_base = obj_id;
+ rtc_attr.table_type = mlx5hws_table_get_res_fw_ft_type(tbl->type, true);
+
+ obj_id = mlx5hws_pool_chunk_get_base_mirror_id(stc_pool, &default_stc->default_hit);
+ rtc_attr.stc_base = obj_id;
+ hws_matcher_set_rtc_attr_sz(matcher, &rtc_attr, rtc_type, true);
+
+ ret = mlx5hws_cmd_rtc_create(ctx->mdev, &rtc_attr, rtc_1_id);
+ if (ret) {
+ mlx5hws_err(ctx, "Failed to create peer matcher RTC of type %s",
+ hws_matcher_rtc_type_to_str(rtc_type));
+ goto destroy_rtc_0;
+ }
+ }
+
+ return 0;
+
+destroy_rtc_0:
+ mlx5hws_cmd_rtc_destroy(ctx->mdev, *rtc_0_id);
+free_ste:
+ if (rtc_type == HWS_MATCHER_RTC_TYPE_MATCH)
+ mlx5hws_pool_chunk_free(ste_pool, ste);
+ return ret;
+}
+
+static void hws_matcher_destroy_rtc(struct mlx5hws_matcher *matcher,
+ enum mlx5hws_matcher_rtc_type rtc_type,
+ u8 action_ste_selector)
+{
+ struct mlx5hws_matcher_action_ste *action_ste;
+ struct mlx5hws_table *tbl = matcher->tbl;
+ struct mlx5hws_pool_chunk *ste;
+ struct mlx5hws_pool *ste_pool;
+ u32 rtc_0_id, rtc_1_id;
+
+ switch (rtc_type) {
+ case HWS_MATCHER_RTC_TYPE_MATCH:
+ rtc_0_id = matcher->match_ste.rtc_0_id;
+ rtc_1_id = matcher->match_ste.rtc_1_id;
+ ste_pool = matcher->match_ste.pool;
+ ste = &matcher->match_ste.ste;
+ break;
+ case HWS_MATCHER_RTC_TYPE_STE_ARRAY:
+ action_ste = &matcher->action_ste[action_ste_selector];
+ rtc_0_id = action_ste->rtc_0_id;
+ rtc_1_id = action_ste->rtc_1_id;
+ ste_pool = action_ste->pool;
+ ste = &action_ste->ste;
+ break;
+ default:
+ return;
+ }
+
+ if (tbl->type == MLX5HWS_TABLE_TYPE_FDB)
+ mlx5hws_cmd_rtc_destroy(matcher->tbl->ctx->mdev, rtc_1_id);
+
+ mlx5hws_cmd_rtc_destroy(matcher->tbl->ctx->mdev, rtc_0_id);
+ if (rtc_type == HWS_MATCHER_RTC_TYPE_MATCH)
+ mlx5hws_pool_chunk_free(ste_pool, ste);
+}
+
+static int
+hws_matcher_check_attr_sz(struct mlx5hws_cmd_query_caps *caps,
+ struct mlx5hws_matcher *matcher)
+{
+ struct mlx5hws_matcher_attr *attr = &matcher->attr;
+
+ if (attr->table.sz_col_log > caps->rtc_log_depth_max) {
+ mlx5hws_err(matcher->tbl->ctx, "Matcher depth exceeds limit %d\n",
+ caps->rtc_log_depth_max);
+ return -EOPNOTSUPP;
+ }
+
+ if (attr->table.sz_col_log + attr->table.sz_row_log > caps->ste_alloc_log_max) {
+ mlx5hws_err(matcher->tbl->ctx, "Total matcher size exceeds limit %d\n",
+ caps->ste_alloc_log_max);
+ return -EOPNOTSUPP;
+ }
+
+ if (attr->table.sz_col_log + attr->table.sz_row_log < caps->ste_alloc_log_gran) {
+ mlx5hws_err(matcher->tbl->ctx, "Total matcher size below limit %d\n",
+ caps->ste_alloc_log_gran);
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static void hws_matcher_set_pool_attr(struct mlx5hws_pool_attr *attr,
+ struct mlx5hws_matcher *matcher)
+{
+ switch (matcher->attr.optimize_flow_src) {
+ case MLX5HWS_MATCHER_FLOW_SRC_VPORT:
+ attr->opt_type = MLX5HWS_POOL_OPTIMIZE_ORIG;
+ break;
+ case MLX5HWS_MATCHER_FLOW_SRC_WIRE:
+ attr->opt_type = MLX5HWS_POOL_OPTIMIZE_MIRROR;
+ break;
+ default:
+ break;
+ }
+}
+
+static int hws_matcher_check_and_process_at(struct mlx5hws_matcher *matcher,
+ struct mlx5hws_action_template *at)
+{
+ struct mlx5hws_context *ctx = matcher->tbl->ctx;
+ bool valid;
+ int ret;
+
+ valid = mlx5hws_action_check_combo(ctx, at->action_type_arr, matcher->tbl->type);
+ if (!valid) {
+ mlx5hws_err(ctx, "Invalid combination in action template\n");
+ return -EINVAL;
+ }
+
+ /* Process action template to setters */
+ ret = mlx5hws_action_template_process(at);
+ if (ret) {
+ mlx5hws_err(ctx, "Failed to process action template\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int hws_matcher_resize_init(struct mlx5hws_matcher *src_matcher)
+{
+ struct mlx5hws_matcher_resize_data *resize_data;
+
+ resize_data = kzalloc(sizeof(*resize_data), GFP_KERNEL);
+ if (!resize_data)
+ return -ENOMEM;
+
+ resize_data->max_stes = src_matcher->action_ste[MLX5HWS_ACTION_STE_IDX_ANY].max_stes;
+
+ resize_data->action_ste[0].stc = src_matcher->action_ste[0].stc;
+ resize_data->action_ste[0].rtc_0_id = src_matcher->action_ste[0].rtc_0_id;
+ resize_data->action_ste[0].rtc_1_id = src_matcher->action_ste[0].rtc_1_id;
+ resize_data->action_ste[0].pool = src_matcher->action_ste[0].max_stes ?
+ src_matcher->action_ste[0].pool :
+ NULL;
+ resize_data->action_ste[1].stc = src_matcher->action_ste[1].stc;
+ resize_data->action_ste[1].rtc_0_id = src_matcher->action_ste[1].rtc_0_id;
+ resize_data->action_ste[1].rtc_1_id = src_matcher->action_ste[1].rtc_1_id;
+ resize_data->action_ste[1].pool = src_matcher->action_ste[1].max_stes ?
+ src_matcher->action_ste[1].pool :
+ NULL;
+
+ /* Place the new resized matcher on the dst matcher's list */
+ list_add(&resize_data->list_node, &src_matcher->resize_dst->resize_data);
+
+ /* Move all the previous resized matchers to the dst matcher's list */
+ while (!list_empty(&src_matcher->resize_data)) {
+ resize_data = list_first_entry(&src_matcher->resize_data,
+ struct mlx5hws_matcher_resize_data,
+ list_node);
+ list_del_init(&resize_data->list_node);
+ list_add(&resize_data->list_node, &src_matcher->resize_dst->resize_data);
+ }
+
+ return 0;
+}
+
+static void hws_matcher_resize_uninit(struct mlx5hws_matcher *matcher)
+{
+ struct mlx5hws_matcher_resize_data *resize_data;
+
+ if (!mlx5hws_matcher_is_resizable(matcher))
+ return;
+
+ while (!list_empty(&matcher->resize_data)) {
+ resize_data = list_first_entry(&matcher->resize_data,
+ struct mlx5hws_matcher_resize_data,
+ list_node);
+ list_del_init(&resize_data->list_node);
+
+ if (resize_data->max_stes) {
+ mlx5hws_action_free_single_stc(matcher->tbl->ctx,
+ matcher->tbl->type,
+ &resize_data->action_ste[1].stc);
+ mlx5hws_action_free_single_stc(matcher->tbl->ctx,
+ matcher->tbl->type,
+ &resize_data->action_ste[0].stc);
+
+ if (matcher->tbl->type == MLX5HWS_TABLE_TYPE_FDB) {
+ mlx5hws_cmd_rtc_destroy(matcher->tbl->ctx->mdev,
+ resize_data->action_ste[1].rtc_1_id);
+ mlx5hws_cmd_rtc_destroy(matcher->tbl->ctx->mdev,
+ resize_data->action_ste[0].rtc_1_id);
+ }
+ mlx5hws_cmd_rtc_destroy(matcher->tbl->ctx->mdev,
+ resize_data->action_ste[1].rtc_0_id);
+ mlx5hws_cmd_rtc_destroy(matcher->tbl->ctx->mdev,
+ resize_data->action_ste[0].rtc_0_id);
+ if (resize_data->action_ste[MLX5HWS_ACTION_STE_IDX_ANY].pool) {
+ mlx5hws_pool_destroy(resize_data->action_ste[1].pool);
+ mlx5hws_pool_destroy(resize_data->action_ste[0].pool);
+ }
+ }
+
+ kfree(resize_data);
+ }
+}
+
+static int
+hws_matcher_bind_at_idx(struct mlx5hws_matcher *matcher, u8 action_ste_selector)
+{
+ struct mlx5hws_cmd_stc_modify_attr stc_attr = {0};
+ struct mlx5hws_matcher_action_ste *action_ste;
+ struct mlx5hws_table *tbl = matcher->tbl;
+ struct mlx5hws_pool_attr pool_attr = {0};
+ struct mlx5hws_context *ctx = tbl->ctx;
+ int ret;
+
+ action_ste = &matcher->action_ste[action_ste_selector];
+
+ /* Allocate action STE mempool */
+ pool_attr.table_type = tbl->type;
+ pool_attr.pool_type = MLX5HWS_POOL_TYPE_STE;
+ pool_attr.flags = MLX5HWS_POOL_FLAGS_FOR_STE_ACTION_POOL;
+ pool_attr.alloc_log_sz = ilog2(roundup_pow_of_two(action_ste->max_stes)) +
+ matcher->attr.table.sz_row_log;
+ hws_matcher_set_pool_attr(&pool_attr, matcher);
+ action_ste->pool = mlx5hws_pool_create(ctx, &pool_attr);
+ if (!action_ste->pool) {
+ mlx5hws_err(ctx, "Failed to create action ste pool\n");
+ return -EINVAL;
+ }
+
+ /* Allocate action RTC */
+ ret = hws_matcher_create_rtc(matcher, HWS_MATCHER_RTC_TYPE_STE_ARRAY, action_ste_selector);
+ if (ret) {
+ mlx5hws_err(ctx, "Failed to create action RTC\n");
+ goto free_ste_pool;
+ }
+
+ /* Allocate STC for jumps to STE */
+ stc_attr.action_offset = MLX5HWS_ACTION_OFFSET_HIT;
+ stc_attr.action_type = MLX5_IFC_STC_ACTION_TYPE_JUMP_TO_STE_TABLE;
+ stc_attr.reparse_mode = MLX5_IFC_STC_REPARSE_IGNORE;
+ stc_attr.ste_table.ste = action_ste->ste;
+ stc_attr.ste_table.ste_pool = action_ste->pool;
+ stc_attr.ste_table.match_definer_id = ctx->caps->trivial_match_definer;
+
+ ret = mlx5hws_action_alloc_single_stc(ctx, &stc_attr, tbl->type,
+ &action_ste->stc);
+ if (ret) {
+ mlx5hws_err(ctx, "Failed to create action jump to table STC\n");
+ goto free_rtc;
+ }
+
+ return 0;
+
+free_rtc:
+ hws_matcher_destroy_rtc(matcher, HWS_MATCHER_RTC_TYPE_STE_ARRAY, action_ste_selector);
+free_ste_pool:
+ mlx5hws_pool_destroy(action_ste->pool);
+ return ret;
+}
+
+static void hws_matcher_unbind_at_idx(struct mlx5hws_matcher *matcher, u8 action_ste_selector)
+{
+ struct mlx5hws_matcher_action_ste *action_ste;
+ struct mlx5hws_table *tbl = matcher->tbl;
+
+ action_ste = &matcher->action_ste[action_ste_selector];
+
+ if (!action_ste->max_stes ||
+ matcher->flags & MLX5HWS_MATCHER_FLAGS_COLLISION ||
+ mlx5hws_matcher_is_in_resize(matcher))
+ return;
+
+ mlx5hws_action_free_single_stc(tbl->ctx, tbl->type, &action_ste->stc);
+ hws_matcher_destroy_rtc(matcher, HWS_MATCHER_RTC_TYPE_STE_ARRAY, action_ste_selector);
+ mlx5hws_pool_destroy(action_ste->pool);
+}
+
+static int hws_matcher_bind_at(struct mlx5hws_matcher *matcher)
+{
+ bool is_jumbo = mlx5hws_matcher_mt_is_jumbo(matcher->mt);
+ struct mlx5hws_table *tbl = matcher->tbl;
+ struct mlx5hws_context *ctx = tbl->ctx;
+ u32 required_stes;
+ u8 max_stes = 0;
+ int i, ret;
+
+ if (matcher->flags & MLX5HWS_MATCHER_FLAGS_COLLISION)
+ return 0;
+
+ for (i = 0; i < matcher->num_of_at; i++) {
+ struct mlx5hws_action_template *at = &matcher->at[i];
+
+ ret = hws_matcher_check_and_process_at(matcher, at);
+ if (ret) {
+ mlx5hws_err(ctx, "Invalid at %d", i);
+ return ret;
+ }
+
+ required_stes = at->num_of_action_stes - (!is_jumbo || at->only_term);
+ max_stes = max(max_stes, required_stes);
+
+ /* Future: Optimize reparse */
+ }
+
+ /* There are no additional STEs required for matcher */
+ if (!max_stes)
+ return 0;
+
+ matcher->action_ste[0].max_stes = max_stes;
+ matcher->action_ste[1].max_stes = max_stes;
+
+ ret = hws_matcher_bind_at_idx(matcher, 0);
+ if (ret)
+ return ret;
+
+ ret = hws_matcher_bind_at_idx(matcher, 1);
+ if (ret)
+ goto free_at_0;
+
+ return 0;
+
+free_at_0:
+ hws_matcher_unbind_at_idx(matcher, 0);
+ return ret;
+}
+
+static void hws_matcher_unbind_at(struct mlx5hws_matcher *matcher)
+{
+ hws_matcher_unbind_at_idx(matcher, 1);
+ hws_matcher_unbind_at_idx(matcher, 0);
+}
+
+static int hws_matcher_bind_mt(struct mlx5hws_matcher *matcher)
+{
+ struct mlx5hws_context *ctx = matcher->tbl->ctx;
+ struct mlx5hws_pool_attr pool_attr = {0};
+ int ret;
+
+ /* Calculate match, range and hash definers */
+ if (!(matcher->flags & MLX5HWS_MATCHER_FLAGS_COLLISION)) {
+ ret = mlx5hws_definer_mt_init(ctx, matcher->mt);
+ if (ret) {
+ if (ret == E2BIG)
+ mlx5hws_err(ctx, "Failed to set matcher templates with match definers\n");
+ return ret;
+ }
+ }
+
+ /* Create an STE pool per matcher*/
+ pool_attr.table_type = matcher->tbl->type;
+ pool_attr.pool_type = MLX5HWS_POOL_TYPE_STE;
+ pool_attr.flags = MLX5HWS_POOL_FLAGS_FOR_MATCHER_STE_POOL;
+ pool_attr.alloc_log_sz = matcher->attr.table.sz_col_log +
+ matcher->attr.table.sz_row_log;
+ hws_matcher_set_pool_attr(&pool_attr, matcher);
+
+ matcher->match_ste.pool = mlx5hws_pool_create(ctx, &pool_attr);
+ if (!matcher->match_ste.pool) {
+ mlx5hws_err(ctx, "Failed to allocate matcher STE pool\n");
+ ret = -EOPNOTSUPP;
+ goto uninit_match_definer;
+ }
+
+ return 0;
+
+uninit_match_definer:
+ if (!(matcher->flags & MLX5HWS_MATCHER_FLAGS_COLLISION))
+ mlx5hws_definer_mt_uninit(ctx, matcher->mt);
+ return ret;
+}
+
+static void hws_matcher_unbind_mt(struct mlx5hws_matcher *matcher)
+{
+ mlx5hws_pool_destroy(matcher->match_ste.pool);
+ if (!(matcher->flags & MLX5HWS_MATCHER_FLAGS_COLLISION))
+ mlx5hws_definer_mt_uninit(matcher->tbl->ctx, matcher->mt);
+}
+
+static int
+hws_matcher_validate_insert_mode(struct mlx5hws_cmd_query_caps *caps,
+ struct mlx5hws_matcher *matcher)
+{
+ struct mlx5hws_matcher_attr *attr = &matcher->attr;
+ struct mlx5hws_context *ctx = matcher->tbl->ctx;
+
+ switch (attr->insert_mode) {
+ case MLX5HWS_MATCHER_INSERT_BY_HASH:
+ if (matcher->attr.distribute_mode != MLX5HWS_MATCHER_DISTRIBUTE_BY_HASH) {
+ mlx5hws_err(ctx, "Invalid matcher distribute mode\n");
+ return -EOPNOTSUPP;
+ }
+ break;
+
+ case MLX5HWS_MATCHER_INSERT_BY_INDEX:
+ if (attr->table.sz_col_log) {
+ mlx5hws_err(ctx, "Matcher with INSERT_BY_INDEX supports only Nx1 table size\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (attr->distribute_mode == MLX5HWS_MATCHER_DISTRIBUTE_BY_HASH) {
+ /* Hash Split Table */
+ if (!caps->rtc_hash_split_table) {
+ mlx5hws_err(ctx, "FW doesn't support insert by index and hash distribute\n");
+ return -EOPNOTSUPP;
+ }
+ } else if (attr->distribute_mode == MLX5HWS_MATCHER_DISTRIBUTE_BY_LINEAR) {
+ /* Linear Lookup Table */
+ if (!caps->rtc_linear_lookup_table ||
+ !IS_BIT_SET(caps->access_index_mode,
+ MLX5_IFC_RTC_STE_ACCESS_MODE_LINEAR)) {
+ mlx5hws_err(ctx, "FW doesn't support insert by index and linear distribute\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (attr->table.sz_row_log > MLX5_IFC_RTC_LINEAR_LOOKUP_TBL_LOG_MAX) {
+ mlx5hws_err(ctx, "Matcher with linear distribute: rows exceed limit %d",
+ MLX5_IFC_RTC_LINEAR_LOOKUP_TBL_LOG_MAX);
+ return -EOPNOTSUPP;
+ }
+ } else {
+ mlx5hws_err(ctx, "Matcher has unsupported distribute mode\n");
+ return -EOPNOTSUPP;
+ }
+ break;
+
+ default:
+ mlx5hws_err(ctx, "Matcher has unsupported insert mode\n");
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int
+hws_matcher_process_attr(struct mlx5hws_cmd_query_caps *caps,
+ struct mlx5hws_matcher *matcher)
+{
+ struct mlx5hws_matcher_attr *attr = &matcher->attr;
+
+ if (hws_matcher_validate_insert_mode(caps, matcher))
+ return -EOPNOTSUPP;
+
+ if (matcher->tbl->type != MLX5HWS_TABLE_TYPE_FDB && attr->optimize_flow_src) {
+ mlx5hws_err(matcher->tbl->ctx, "NIC domain doesn't support flow_src\n");
+ return -EOPNOTSUPP;
+ }
+
+ /* Convert number of rules to the required depth */
+ if (attr->mode == MLX5HWS_MATCHER_RESOURCE_MODE_RULE &&
+ attr->insert_mode == MLX5HWS_MATCHER_INSERT_BY_HASH)
+ attr->table.sz_col_log = hws_matcher_rules_to_tbl_depth(attr->rule.num_log);
+
+ matcher->flags |= attr->resizable ? MLX5HWS_MATCHER_FLAGS_RESIZABLE : 0;
+
+ return hws_matcher_check_attr_sz(caps, matcher);
+}
+
+static int hws_matcher_create_and_connect(struct mlx5hws_matcher *matcher)
+{
+ int ret;
+
+ /* Select and create the definers for current matcher */
+ ret = hws_matcher_bind_mt(matcher);
+ if (ret)
+ return ret;
+
+ /* Calculate and verify action combination */
+ ret = hws_matcher_bind_at(matcher);
+ if (ret)
+ goto unbind_mt;
+
+ /* Create matcher end flow table anchor */
+ ret = hws_matcher_create_end_ft(matcher);
+ if (ret)
+ goto unbind_at;
+
+ /* Allocate the RTC for the new matcher */
+ ret = hws_matcher_create_rtc(matcher, HWS_MATCHER_RTC_TYPE_MATCH, 0);
+ if (ret)
+ goto destroy_end_ft;
+
+ /* Connect the matcher to the matcher list */
+ ret = hws_matcher_connect(matcher);
+ if (ret)
+ goto destroy_rtc;
+
+ return 0;
+
+destroy_rtc:
+ hws_matcher_destroy_rtc(matcher, HWS_MATCHER_RTC_TYPE_MATCH, 0);
+destroy_end_ft:
+ hws_matcher_destroy_end_ft(matcher);
+unbind_at:
+ hws_matcher_unbind_at(matcher);
+unbind_mt:
+ hws_matcher_unbind_mt(matcher);
+ return ret;
+}
+
+static void hws_matcher_destroy_and_disconnect(struct mlx5hws_matcher *matcher)
+{
+ hws_matcher_resize_uninit(matcher);
+ hws_matcher_disconnect(matcher);
+ hws_matcher_destroy_rtc(matcher, HWS_MATCHER_RTC_TYPE_MATCH, 0);
+ hws_matcher_destroy_end_ft(matcher);
+ hws_matcher_unbind_at(matcher);
+ hws_matcher_unbind_mt(matcher);
+}
+
+static int
+hws_matcher_create_col_matcher(struct mlx5hws_matcher *matcher)
+{
+ struct mlx5hws_context *ctx = matcher->tbl->ctx;
+ struct mlx5hws_matcher *col_matcher;
+ int ret;
+
+ if (matcher->attr.mode != MLX5HWS_MATCHER_RESOURCE_MODE_RULE ||
+ matcher->attr.insert_mode == MLX5HWS_MATCHER_INSERT_BY_INDEX)
+ return 0;
+
+ if (!hws_matcher_requires_col_tbl(matcher->attr.rule.num_log))
+ return 0;
+
+ col_matcher = kzalloc(sizeof(*matcher), GFP_KERNEL);
+ if (!col_matcher)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&col_matcher->resize_data);
+
+ col_matcher->tbl = matcher->tbl;
+ col_matcher->mt = matcher->mt;
+ col_matcher->at = matcher->at;
+ col_matcher->num_of_at = matcher->num_of_at;
+ col_matcher->num_of_mt = matcher->num_of_mt;
+ col_matcher->attr.priority = matcher->attr.priority;
+ col_matcher->flags = matcher->flags;
+ col_matcher->flags |= MLX5HWS_MATCHER_FLAGS_COLLISION;
+ col_matcher->attr.mode = MLX5HWS_MATCHER_RESOURCE_MODE_HTABLE;
+ col_matcher->attr.optimize_flow_src = matcher->attr.optimize_flow_src;
+ col_matcher->attr.table.sz_row_log = matcher->attr.rule.num_log;
+ col_matcher->attr.table.sz_col_log = MLX5HWS_MATCHER_ASSURED_COL_TBL_DEPTH;
+ if (col_matcher->attr.table.sz_row_log > MLX5HWS_MATCHER_ASSURED_ROW_RATIO)
+ col_matcher->attr.table.sz_row_log -= MLX5HWS_MATCHER_ASSURED_ROW_RATIO;
+
+ col_matcher->attr.max_num_of_at_attach = matcher->attr.max_num_of_at_attach;
+
+ ret = hws_matcher_process_attr(ctx->caps, col_matcher);
+ if (ret)
+ goto free_col_matcher;
+
+ ret = hws_matcher_create_and_connect(col_matcher);
+ if (ret)
+ goto free_col_matcher;
+
+ matcher->col_matcher = col_matcher;
+
+ return 0;
+
+free_col_matcher:
+ kfree(col_matcher);
+ mlx5hws_err(ctx, "Failed to create assured collision matcher\n");
+ return ret;
+}
+
+static void
+hws_matcher_destroy_col_matcher(struct mlx5hws_matcher *matcher)
+{
+ if (matcher->attr.mode != MLX5HWS_MATCHER_RESOURCE_MODE_RULE ||
+ matcher->attr.insert_mode == MLX5HWS_MATCHER_INSERT_BY_INDEX)
+ return;
+
+ if (matcher->col_matcher) {
+ hws_matcher_destroy_and_disconnect(matcher->col_matcher);
+ kfree(matcher->col_matcher);
+ }
+}
+
+static int hws_matcher_init(struct mlx5hws_matcher *matcher)
+{
+ struct mlx5hws_context *ctx = matcher->tbl->ctx;
+ int ret;
+
+ INIT_LIST_HEAD(&matcher->resize_data);
+
+ mutex_lock(&ctx->ctrl_lock);
+
+ /* Allocate matcher resource and connect to the packet pipe */
+ ret = hws_matcher_create_and_connect(matcher);
+ if (ret)
+ goto unlock_err;
+
+ /* Create additional matcher for collision handling */
+ ret = hws_matcher_create_col_matcher(matcher);
+ if (ret)
+ goto destory_and_disconnect;
+ mutex_unlock(&ctx->ctrl_lock);
+
+ return 0;
+
+destory_and_disconnect:
+ hws_matcher_destroy_and_disconnect(matcher);
+unlock_err:
+ mutex_unlock(&ctx->ctrl_lock);
+ return ret;
+}
+
+static int hws_matcher_uninit(struct mlx5hws_matcher *matcher)
+{
+ struct mlx5hws_context *ctx = matcher->tbl->ctx;
+
+ mutex_lock(&ctx->ctrl_lock);
+ hws_matcher_destroy_col_matcher(matcher);
+ hws_matcher_destroy_and_disconnect(matcher);
+ mutex_unlock(&ctx->ctrl_lock);
+
+ return 0;
+}
+
+int mlx5hws_matcher_attach_at(struct mlx5hws_matcher *matcher,
+ struct mlx5hws_action_template *at)
+{
+ bool is_jumbo = mlx5hws_matcher_mt_is_jumbo(matcher->mt);
+ struct mlx5hws_context *ctx = matcher->tbl->ctx;
+ u32 required_stes;
+ int ret;
+
+ if (!matcher->attr.max_num_of_at_attach) {
+ mlx5hws_dbg(ctx, "Num of current at (%d) exceed allowed value\n",
+ matcher->num_of_at);
+ return -EOPNOTSUPP;
+ }
+
+ ret = hws_matcher_check_and_process_at(matcher, at);
+ if (ret)
+ return -ret;
+
+ required_stes = at->num_of_action_stes - (!is_jumbo || at->only_term);
+ if (matcher->action_ste[MLX5HWS_ACTION_STE_IDX_ANY].max_stes < required_stes) {
+ mlx5hws_dbg(ctx, "Required STEs [%d] exceeds initial action template STE [%d]\n",
+ required_stes,
+ matcher->action_ste[MLX5HWS_ACTION_STE_IDX_ANY].max_stes);
+ return -ENOMEM;
+ }
+
+ matcher->at[matcher->num_of_at] = *at;
+ matcher->num_of_at += 1;
+ matcher->attr.max_num_of_at_attach -= 1;
+
+ if (matcher->col_matcher)
+ matcher->col_matcher->num_of_at = matcher->num_of_at;
+
+ return 0;
+}
+
+static int
+hws_matcher_set_templates(struct mlx5hws_matcher *matcher,
+ struct mlx5hws_match_template *mt[],
+ u8 num_of_mt,
+ struct mlx5hws_action_template *at[],
+ u8 num_of_at)
+{
+ struct mlx5hws_context *ctx = matcher->tbl->ctx;
+ int ret = 0;
+ int i;
+
+ if (!num_of_mt || !num_of_at) {
+ mlx5hws_err(ctx, "Number of action/match template cannot be zero\n");
+ return -EOPNOTSUPP;
+ }
+
+ matcher->mt = kcalloc(num_of_mt, sizeof(*matcher->mt), GFP_KERNEL);
+ if (!matcher->mt)
+ return -ENOMEM;
+
+ matcher->at = kcalloc(num_of_at + matcher->attr.max_num_of_at_attach,
+ sizeof(*matcher->at),
+ GFP_KERNEL);
+ if (!matcher->at) {
+ mlx5hws_err(ctx, "Failed to allocate action template array\n");
+ ret = -ENOMEM;
+ goto free_mt;
+ }
+
+ for (i = 0; i < num_of_mt; i++)
+ matcher->mt[i] = *mt[i];
+
+ for (i = 0; i < num_of_at; i++)
+ matcher->at[i] = *at[i];
+
+ matcher->num_of_mt = num_of_mt;
+ matcher->num_of_at = num_of_at;
+
+ return 0;
+
+free_mt:
+ kfree(matcher->mt);
+ return ret;
+}
+
+static void
+hws_matcher_unset_templates(struct mlx5hws_matcher *matcher)
+{
+ kfree(matcher->at);
+ kfree(matcher->mt);
+}
+
+struct mlx5hws_matcher *
+mlx5hws_matcher_create(struct mlx5hws_table *tbl,
+ struct mlx5hws_match_template *mt[],
+ u8 num_of_mt,
+ struct mlx5hws_action_template *at[],
+ u8 num_of_at,
+ struct mlx5hws_matcher_attr *attr)
+{
+ struct mlx5hws_context *ctx = tbl->ctx;
+ struct mlx5hws_matcher *matcher;
+ int ret;
+
+ matcher = kzalloc(sizeof(*matcher), GFP_KERNEL);
+ if (!matcher)
+ return NULL;
+
+ matcher->tbl = tbl;
+ matcher->attr = *attr;
+
+ ret = hws_matcher_process_attr(tbl->ctx->caps, matcher);
+ if (ret)
+ goto free_matcher;
+
+ ret = hws_matcher_set_templates(matcher, mt, num_of_mt, at, num_of_at);
+ if (ret)
+ goto free_matcher;
+
+ ret = hws_matcher_init(matcher);
+ if (ret) {
+ mlx5hws_err(ctx, "Failed to initialise matcher: %d\n", ret);
+ goto unset_templates;
+ }
+
+ return matcher;
+
+unset_templates:
+ hws_matcher_unset_templates(matcher);
+free_matcher:
+ kfree(matcher);
+ return NULL;
+}
+
+int mlx5hws_matcher_destroy(struct mlx5hws_matcher *matcher)
+{
+ hws_matcher_uninit(matcher);
+ hws_matcher_unset_templates(matcher);
+ kfree(matcher);
+ return 0;
+}
+
+struct mlx5hws_match_template *
+mlx5hws_match_template_create(struct mlx5hws_context *ctx,
+ u32 *match_param,
+ u32 match_param_sz,
+ u8 match_criteria_enable)
+{
+ struct mlx5hws_match_template *mt;
+
+ mt = kzalloc(sizeof(*mt), GFP_KERNEL);
+ if (!mt)
+ return NULL;
+
+ mt->match_param = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
+ if (!mt->match_param)
+ goto free_template;
+
+ memcpy(mt->match_param, match_param, match_param_sz);
+ mt->match_criteria_enable = match_criteria_enable;
+
+ return mt;
+
+free_template:
+ kfree(mt);
+ return NULL;
+}
+
+int mlx5hws_match_template_destroy(struct mlx5hws_match_template *mt)
+{
+ kfree(mt->match_param);
+ kfree(mt);
+ return 0;
+}
+
+static int hws_matcher_resize_precheck(struct mlx5hws_matcher *src_matcher,
+ struct mlx5hws_matcher *dst_matcher)
+{
+ struct mlx5hws_context *ctx = src_matcher->tbl->ctx;
+ int i;
+
+ if (src_matcher->tbl->type != dst_matcher->tbl->type) {
+ mlx5hws_err(ctx, "Table type mismatch for src/dst matchers\n");
+ return -EINVAL;
+ }
+
+ if (!mlx5hws_matcher_is_resizable(src_matcher) ||
+ !mlx5hws_matcher_is_resizable(dst_matcher)) {
+ mlx5hws_err(ctx, "Src/dst matcher is not resizable\n");
+ return -EINVAL;
+ }
+
+ if (mlx5hws_matcher_is_insert_by_idx(src_matcher) !=
+ mlx5hws_matcher_is_insert_by_idx(dst_matcher)) {
+ mlx5hws_err(ctx, "Src/dst matchers insert mode mismatch\n");
+ return -EINVAL;
+ }
+
+ if (mlx5hws_matcher_is_in_resize(src_matcher) ||
+ mlx5hws_matcher_is_in_resize(dst_matcher)) {
+ mlx5hws_err(ctx, "Src/dst matcher is already in resize\n");
+ return -EINVAL;
+ }
+
+ /* Compare match templates - make sure the definers are equivalent */
+ if (src_matcher->num_of_mt != dst_matcher->num_of_mt) {
+ mlx5hws_err(ctx, "Src/dst matcher match templates mismatch\n");
+ return -EINVAL;
+ }
+
+ if (src_matcher->action_ste[MLX5HWS_ACTION_STE_IDX_ANY].max_stes >
+ dst_matcher->action_ste[0].max_stes) {
+ mlx5hws_err(ctx, "Src/dst matcher max STEs mismatch\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < src_matcher->num_of_mt; i++) {
+ if (mlx5hws_definer_compare(src_matcher->mt[i].definer,
+ dst_matcher->mt[i].definer)) {
+ mlx5hws_err(ctx, "Src/dst matcher definers mismatch\n");
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+int mlx5hws_matcher_resize_set_target(struct mlx5hws_matcher *src_matcher,
+ struct mlx5hws_matcher *dst_matcher)
+{
+ int ret = 0;
+
+ mutex_lock(&src_matcher->tbl->ctx->ctrl_lock);
+
+ ret = hws_matcher_resize_precheck(src_matcher, dst_matcher);
+ if (ret)
+ goto out;
+
+ src_matcher->resize_dst = dst_matcher;
+
+ ret = hws_matcher_resize_init(src_matcher);
+ if (ret)
+ src_matcher->resize_dst = NULL;
+
+out:
+ mutex_unlock(&src_matcher->tbl->ctx->ctrl_lock);
+ return ret;
+}
+
+int mlx5hws_matcher_resize_rule_move(struct mlx5hws_matcher *src_matcher,
+ struct mlx5hws_rule *rule,
+ struct mlx5hws_rule_attr *attr)
+{
+ struct mlx5hws_context *ctx = src_matcher->tbl->ctx;
+
+ if (unlikely(!mlx5hws_matcher_is_in_resize(src_matcher))) {
+ mlx5hws_err(ctx, "Matcher is not resizable or not in resize\n");
+ return -EINVAL;
+ }
+
+ if (unlikely(src_matcher != rule->matcher)) {
+ mlx5hws_err(ctx, "Rule doesn't belong to src matcher\n");
+ return -EINVAL;
+ }
+
+ return mlx5hws_rule_move_hws_add(rule, attr);
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.h b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.h
new file mode 100644
index 000000000000..125391d1a114
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.h
@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
+/* Copyright (c) 2024 NVIDIA Corporation & Affiliates */
+
+#ifndef MLX5HWS_MATCHER_H_
+#define MLX5HWS_MATCHER_H_
+
+/* We calculated that concatenating a collision table to the main table with
+ * 3% of the main table rows will be enough resources for high insertion
+ * success probability.
+ *
+ * The calculation: log2(2^x * 3 / 100) = log2(2^x) + log2(3/100) = x - 5.05 ~ 5
+ */
+#define MLX5HWS_MATCHER_ASSURED_ROW_RATIO 5
+/* Threshold to determine if amount of rules require a collision table */
+#define MLX5HWS_MATCHER_ASSURED_RULES_TH 10
+/* Required depth of an assured collision table */
+#define MLX5HWS_MATCHER_ASSURED_COL_TBL_DEPTH 4
+/* Required depth of the main large table */
+#define MLX5HWS_MATCHER_ASSURED_MAIN_TBL_DEPTH 2
+
+enum mlx5hws_matcher_offset {
+ MLX5HWS_MATCHER_OFFSET_TAG_DW1 = 12,
+ MLX5HWS_MATCHER_OFFSET_TAG_DW0 = 13,
+};
+
+enum mlx5hws_matcher_flags {
+ MLX5HWS_MATCHER_FLAGS_COLLISION = 1 << 2,
+ MLX5HWS_MATCHER_FLAGS_RESIZABLE = 1 << 3,
+};
+
+struct mlx5hws_match_template {
+ struct mlx5hws_definer *definer;
+ struct mlx5hws_definer_fc *fc;
+ u32 *match_param;
+ u8 match_criteria_enable;
+ u16 fc_sz;
+};
+
+struct mlx5hws_matcher_match_ste {
+ struct mlx5hws_pool_chunk ste;
+ u32 rtc_0_id;
+ u32 rtc_1_id;
+ struct mlx5hws_pool *pool;
+};
+
+struct mlx5hws_matcher_action_ste {
+ struct mlx5hws_pool_chunk ste;
+ struct mlx5hws_pool_chunk stc;
+ u32 rtc_0_id;
+ u32 rtc_1_id;
+ struct mlx5hws_pool *pool;
+ u8 max_stes;
+};
+
+struct mlx5hws_matcher_resize_data_node {
+ struct mlx5hws_pool_chunk stc;
+ u32 rtc_0_id;
+ u32 rtc_1_id;
+ struct mlx5hws_pool *pool;
+};
+
+struct mlx5hws_matcher_resize_data {
+ struct mlx5hws_matcher_resize_data_node action_ste[2];
+ u8 max_stes;
+ struct list_head list_node;
+};
+
+struct mlx5hws_matcher {
+ struct mlx5hws_table *tbl;
+ struct mlx5hws_matcher_attr attr;
+ struct mlx5hws_match_template *mt;
+ struct mlx5hws_action_template *at;
+ u8 num_of_at;
+ u8 num_of_mt;
+ /* enum mlx5hws_matcher_flags */
+ u8 flags;
+ u32 end_ft_id;
+ struct mlx5hws_matcher *col_matcher;
+ struct mlx5hws_matcher *resize_dst;
+ struct mlx5hws_matcher_match_ste match_ste;
+ struct mlx5hws_matcher_action_ste action_ste[2];
+ struct list_head list_node;
+ struct list_head resize_data;
+};
+
+static inline bool
+mlx5hws_matcher_mt_is_jumbo(struct mlx5hws_match_template *mt)
+{
+ return mlx5hws_definer_is_jumbo(mt->definer);
+}
+
+static inline bool mlx5hws_matcher_is_resizable(struct mlx5hws_matcher *matcher)
+{
+ return !!(matcher->flags & MLX5HWS_MATCHER_FLAGS_RESIZABLE);
+}
+
+static inline bool mlx5hws_matcher_is_in_resize(struct mlx5hws_matcher *matcher)
+{
+ return !!matcher->resize_dst;
+}
+
+static inline bool mlx5hws_matcher_is_insert_by_idx(struct mlx5hws_matcher *matcher)
+{
+ return matcher->attr.insert_mode == MLX5HWS_MATCHER_INSERT_BY_INDEX;
+}
+
+#endif /* MLX5HWS_MATCHER_H_ */
--
2.46.0
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