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net/mlx5e: Enforce setting of a single FEC mode 

Ethtool command allow setting of several FEC modes in a single set
command. The driver can only set a single FEC mode at a time. With this
patch driver will reply not-supported on setting several FEC modes.

Signed-off-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Aya Levin 2020-02-11 14:32:49 -08:00 committed by Saeed Mahameed
parent 511aa2aa63
commit 4bd9d5070b
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
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@ -1541,6 +1541,10 @@ static int mlx5e_set_fecparam(struct net_device *netdev,
int mode;
int err;
if (bitmap_weight((unsigned long *)&fecparam->fec,
ETHTOOL_FEC_BASER_BIT + 1) > 1)
return -EOPNOTSUPP;
for (mode = 0; mode < ARRAY_SIZE(pplm_fec_2_ethtool); mode++) {
if (!(pplm_fec_2_ethtool[mode] & fecparam->fec))
continue;