linux-kernel - [PATCH net-next V2 12/12] net/mlx5: HWS, Export action STE tables to debugfs

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Message-ID: <1744312662-356571-13-git-send-email-tariqt@nvidia.com>
Date: Thu, 10 Apr 2025 22:17:42 +0300
From: Tariq Toukan <tariqt@...dia.com>
To: "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>, "Andrew
 Lunn" <andrew+netdev@...n.ch>
CC: Gal Pressman <gal@...dia.com>, Leon Romanovsky <leonro@...dia.com>, "Saeed
 Mahameed" <saeedm@...dia.com>, Leon Romanovsky <leon@...nel.org>, Tariq
 Toukan <tariqt@...dia.com>, <netdev@...r.kernel.org>,
	<linux-rdma@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Moshe Shemesh
	<moshe@...dia.com>, Mark Bloch <mbloch@...dia.com>, Vlad Dogaru
	<vdogaru@...dia.com>, Yevgeny Kliteynik <kliteyn@...dia.com>, Michal Kubiak
	<michal.kubiak@...el.com>
Subject: [PATCH net-next V2 12/12] net/mlx5: HWS, Export action STE tables to debugfs

From: Vlad Dogaru <vdogaru@...dia.com>

Introduce a new type of dump object and dump all action STE tables,
along with information on their RTCs and STEs.

Signed-off-by: Vlad Dogaru <vdogaru@...dia.com>
Reviewed-by: Hamdan Agbariya <hamdani@...dia.com>
Reviewed-by: Mark Bloch <mbloch@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
Reviewed-by: Michal Kubiak <michal.kubiak@...el.com>
---
 .../mellanox/mlx5/core/steering/hws/debug.c   | 36 ++++++++++++++++++-
 .../mellanox/mlx5/core/steering/hws/debug.h   |  2 ++
 2 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/debug.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/debug.c
index 38f75dec9cfc..91568d6c1dac 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/debug.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/debug.c
@@ -387,10 +387,41 @@ static int hws_debug_dump_context_stc(struct seq_file *f, struct mlx5hws_context
 	return 0;
 }
 
+static void
+hws_debug_dump_action_ste_table(struct seq_file *f,
+				struct mlx5hws_action_ste_table *action_tbl)
+{
+	int ste_0_id = mlx5hws_pool_get_base_id(action_tbl->pool);
+	int ste_1_id = mlx5hws_pool_get_base_mirror_id(action_tbl->pool);
+
+	seq_printf(f, "%d,0x%llx,%d,%d,%d,%d\n",
+		   MLX5HWS_DEBUG_RES_TYPE_ACTION_STE_TABLE,
+		   HWS_PTR_TO_ID(action_tbl),
+		   action_tbl->rtc_0_id, ste_0_id,
+		   action_tbl->rtc_1_id, ste_1_id);
+}
+
+static void hws_debug_dump_action_ste_pool(struct seq_file *f,
+					   struct mlx5hws_action_ste_pool *pool)
+{
+	struct mlx5hws_action_ste_table *action_tbl;
+	enum mlx5hws_pool_optimize opt;
+
+	mutex_lock(&pool->lock);
+	for (opt = MLX5HWS_POOL_OPTIMIZE_NONE; opt < MLX5HWS_POOL_OPTIMIZE_MAX;
+	     opt++) {
+		list_for_each_entry(action_tbl, &pool->elems[opt].available,
+				    list_node) {
+			hws_debug_dump_action_ste_table(f, action_tbl);
+		}
+	}
+	mutex_unlock(&pool->lock);
+}
+
 static int hws_debug_dump_context(struct seq_file *f, struct mlx5hws_context *ctx)
 {
 	struct mlx5hws_table *tbl;
-	int ret;
+	int ret, i;
 
 	ret = hws_debug_dump_context_info(f, ctx);
 	if (ret)
@@ -410,6 +441,9 @@ static int hws_debug_dump_context(struct seq_file *f, struct mlx5hws_context *ct
 			return ret;
 	}
 
+	for (i = 0; i < ctx->queues; i++)
+		hws_debug_dump_action_ste_pool(f, &ctx->action_ste_pool[i]);
+
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/debug.h b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/debug.h
index e44e7ae28f93..89c396f9f266 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/debug.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/debug.h
@@ -26,6 +26,8 @@ enum mlx5hws_debug_res_type {
 	MLX5HWS_DEBUG_RES_TYPE_MATCHER_TEMPLATE_HASH_DEFINER = 4205,
 	MLX5HWS_DEBUG_RES_TYPE_MATCHER_TEMPLATE_RANGE_DEFINER = 4206,
 	MLX5HWS_DEBUG_RES_TYPE_MATCHER_TEMPLATE_COMPARE_MATCH_DEFINER = 4207,
+
+	MLX5HWS_DEBUG_RES_TYPE_ACTION_STE_TABLE = 4300,
 };
 
 static inline u64
-- 
2.31.1