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net/mlx5e: ethtool, Avoid setting speed to 56GBASE when autoneg off

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Setting speed to 56GBASE is allowed only with auto-negotiation enabled.

This patch prevent setting speed to 56GBASE when auto-negotiation disabled.

Fixes: f62b8bb8f2 ("net/mlx5: Extend mlx5_core to support ConnectX-4 Ethernet functionality")
Signed-off-by: Mohamad Heib <mohamadh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Mohamad Heib 2019-04-23 21:13:48 +03:00 committed by Saeed Mahameed
parent 466df6eb4a
commit 5faf5b70c5
1 changed files with 8 additions and 0 deletions
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8
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
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@ -1081,6 +1081,14 @@ int mlx5e_ethtool_set_link_ksettings(struct mlx5e_priv *priv,
link_modes = autoneg == AUTONEG_ENABLE ? ethtool2ptys_adver_func(adver) :
mlx5e_port_speed2linkmodes(mdev, speed, !ext);
if ((link_modes & MLX5E_PROT_MASK(MLX5E_56GBASE_R4)) &&
autoneg != AUTONEG_ENABLE) {
netdev_err(priv->netdev, "%s: 56G link speed requires autoneg enabled\n",
__func__);
err = -EINVAL;
goto out;
}
link_modes = link_modes & eproto.cap;
if (!link_modes) {
netdev_err(priv->netdev, "%s: Not supported link mode(s) requested",