netdev - [net 13/15] net/mlx5: fs_chains: Fix ft prio if ignore_flow

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Date: Wed, 26 Jul 2023 14:32:04 -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>,
	Chris Mi <cmi@...dia.com>,
	Paul Blakey <paulb@...dia.com>,
	Roi Dayan <roid@...dia.com>
Subject: [net 13/15] net/mlx5: fs_chains: Fix ft prio if ignore_flow_level is not supported

From: Chris Mi <cmi@...dia.com>

The cited commit sets ft prio to fs_base_prio. But if
ignore_flow_level it not supported, ft prio must be set based on
tc filter prio. Otherwise, all the ft prio are the same on the same
chain. It is invalid if ignore_flow_level is not supported.

Fix it by setting ft prio based on tc filter prio and setting
fs_base_prio to 0 for fdb.

Fixes: 8e80e5648092 ("net/mlx5: fs_chains: Refactor to detach chains from tc usage")
Signed-off-by: Chris Mi <cmi@...dia.com>
Reviewed-by: Paul Blakey <paulb@...dia.com>
Reviewed-by: Roi Dayan <roid@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c | 1 -
 drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.c    | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index 93b2b94d41cd..bc04abb31f9c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -1436,7 +1436,6 @@ esw_chains_create(struct mlx5_eswitch *esw, struct mlx5_flow_table *miss_fdb)
 
 	esw_init_chains_offload_flags(esw, &attr.flags);
 	attr.ns = MLX5_FLOW_NAMESPACE_FDB;
-	attr.fs_base_prio = FDB_TC_OFFLOAD;
 	attr.max_grp_num = esw->params.large_group_num;
 	attr.default_ft = miss_fdb;
 	attr.mapping = esw->offloads.reg_c0_obj_pool;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.c
index db9df9798ffa..a80ecb672f33 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.c
@@ -178,7 +178,7 @@ mlx5_chains_create_table(struct mlx5_fs_chains *chains,
 	if (!mlx5_chains_ignore_flow_level_supported(chains) ||
 	    (chain == 0 && prio == 1 && level == 0)) {
 		ft_attr.level = chains->fs_base_level;
-		ft_attr.prio = chains->fs_base_prio;
+		ft_attr.prio = chains->fs_base_prio + prio - 1;
 		ns = (chains->ns == MLX5_FLOW_NAMESPACE_FDB) ?
 			mlx5_get_fdb_sub_ns(chains->dev, chain) :
 			mlx5_get_flow_namespace(chains->dev, chains->ns);
-- 
2.41.0