netdev - [net 10/18] net/mlx5: Disable VF tunnel TX offload if ignore_flow

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Date:   Wed, 10 Mar 2021 11:03:34 -0800
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        Maor Dickman <maord@...dia.com>,
        Vlad Buslov <vladbu@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: [net 10/18] net/mlx5: Disable VF tunnel TX offload if ignore_flow_level isn't supported

From: Maor Dickman <maord@...dia.com>

VF tunnel TX traffic offload is adding flow which forward to flow
tables with lower level, which isn't support on all FW versions
and may cause firmware to fail with syndrome.

Fixed by enabling VF tunnel TX offload only if flow table capability
ignore_flow_level is enabled.

Fixes: 10742efc20a4 ("net/mlx5e: VF tunnel TX traffic offloading")
Signed-off-by: Maor Dickman <maord@...dia.com>
Reviewed-by: Vlad Buslov <vladbu@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index 94cb0217b4f3..8694b83968b4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -551,7 +551,8 @@ esw_setup_dests(struct mlx5_flow_destination *dest,
 
 	if (!mlx5_eswitch_termtbl_required(esw, attr, flow_act, spec) &&
 	    MLX5_CAP_GEN(esw_attr->in_mdev, reg_c_preserve) &&
-	    mlx5_eswitch_vport_match_metadata_enabled(esw))
+	    mlx5_eswitch_vport_match_metadata_enabled(esw) &&
+	    MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev, ignore_flow_level))
 		attr->flags |= MLX5_ESW_ATTR_FLAG_SRC_REWRITE;
 
 	if (attr->dest_ft) {
-- 
2.29.2