| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.6 045/166] net/mlx5e: Enforce setting of a single FEC mode | Date | Wed, 22 Apr 2020 11:56:12 +0200 |
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From: Aya Levin <ayal@mellanox.com>
[ Upstream commit 4bd9d5070b92da012f2715cf8e4859acb78b8f35 ]
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> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index d2cfa247abc86..9710cdecb63af 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -1535,6 +1535,10 @@ 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; -- 2.20.1
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