[PATCH net 1/3] net/mlx5e: Fix missing FEC mode mapping for RS_544_514_INTERLEAVED_QUAD

[Tariq Toukan]

From: Shahar Shitrit <shshitrit@xxxxxxxxxx>

MLX5E_FEC_RS_544_514_INTERLEAVED_QUAD is missing from
pplm_fec_2_ethtool_linkmodes[], leaving index 4 zero-initialized.
As a result, when this FEC mode is active, find_first_bit() returns
index 4, causing __set_bit() to set bit 0
(ETHTOOL_LINK_MODE_10baseT_Half_BIT) instead of
ETHTOOL_LINK_MODE_FEC_RS_BIT. Consequently, ethtool reports:

  Advertised FEC modes: Not reported

Add the missing mapping to ETHTOOL_LINK_MODE_FEC_RS_BIT.

Fixes: 4e343c11efbb ("net/mlx5e: Support FEC settings for 200G per lane link modes")
Signed-off-by: Shahar Shitrit <shshitrit@xxxxxxxxxx>
Reviewed-by: Dragos Tatulea <dtatulea@xxxxxxxxxx>
Reviewed-by: Yael Chemla <ychemla@xxxxxxxxxx>
Signed-off-by: Tariq Toukan <tariqt@xxxxxxxxxx>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index 112926d07634..f285ad88b6d5 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -1013,6 +1013,7 @@ static const u32 pplm_fec_2_ethtool_linkmodes[] = {
 	[MLX5E_FEC_NOFEC] = ETHTOOL_LINK_MODE_FEC_NONE_BIT,
 	[MLX5E_FEC_FIRECODE] = ETHTOOL_LINK_MODE_FEC_BASER_BIT,
 	[MLX5E_FEC_RS_528_514] = ETHTOOL_LINK_MODE_FEC_RS_BIT,
+	[MLX5E_FEC_RS_544_514_INTERLEAVED_QUAD] = ETHTOOL_LINK_MODE_FEC_RS_BIT,
 	[MLX5E_FEC_RS_544_514] = ETHTOOL_LINK_MODE_FEC_RS_BIT,
 	[MLX5E_FEC_LLRS_272_257_1] = ETHTOOL_LINK_MODE_FEC_LLRS_BIT,
 };
-- 
2.44.0