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Message-Id: <20210608175946.752059342@linuxfoundation.org>
Date: Tue, 8 Jun 2021 20:26:08 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Yevgeny Kliteynik <kliteyn@...dia.com>,
Alex Vesker <valex@...dia.com>,
Saeed Mahameed <saeedm@...dia.com>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.12 038/161] net/mlx5: DR, Create multi-destination flow table with level less than 64
From: Yevgeny Kliteynik <kliteyn@...dia.com>
[ Upstream commit 216214c64a8c1cb9078c2c0aec7bb4a2f8e75397 ]
Flow table that contains flow pointing to multiple flow tables or multiple
TIRs must have a level lower than 64. In our case it applies to muli-
destination flow table.
Fix the level of the created table to comply with HW Spec definitions, and
still make sure that its level lower than SW-owned tables, so that it
would be possible to point from the multi-destination FW table to SW
tables.
Fixes: 34583beea4b7 ("net/mlx5: DR, Create multi-destination table for SW-steering use")
Signed-off-by: Yevgeny Kliteynik <kliteyn@...dia.com>
Reviewed-by: Alex Vesker <valex@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_fw.c | 3 ++-
include/linux/mlx5/mlx5_ifc.h | 2 ++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_fw.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_fw.c
index 1fbcd012bb85..7ccfd40586ce 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_fw.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_fw.c
@@ -112,7 +112,8 @@ int mlx5dr_fw_create_md_tbl(struct mlx5dr_domain *dmn,
int ret;
ft_attr.table_type = MLX5_FLOW_TABLE_TYPE_FDB;
- ft_attr.level = dmn->info.caps.max_ft_level - 2;
+ ft_attr.level = min_t(int, dmn->info.caps.max_ft_level - 2,
+ MLX5_FT_MAX_MULTIPATH_LEVEL);
ft_attr.reformat_en = reformat_req;
ft_attr.decap_en = reformat_req;
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 9c68b2da14c6..e5a4c68093fc 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -1260,6 +1260,8 @@ enum mlx5_fc_bulk_alloc_bitmask {
#define MLX5_FC_BULK_NUM_FCS(fc_enum) (MLX5_FC_BULK_SIZE_FACTOR * (fc_enum))
+#define MLX5_FT_MAX_MULTIPATH_LEVEL 63
+
enum {
MLX5_STEERING_FORMAT_CONNECTX_5 = 0,
MLX5_STEERING_FORMAT_CONNECTX_6DX = 1,
--
2.30.2
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