From: Aya Levin <ayal@xxxxxxxxxx>
[ Upstream commit b1c0aca3d3ddeebeec57ada9c2df9ed647939249 ]
Prior to this patch, configuring speed to 50G with autoneg off over
devices supporting 50G per lane failed.
Support for 50G per lane introduced a new set of link-modes, on which
driver always performed a speed validation as if only legacy link-modes
were configured. Fix driver speed validation to force setting autoneg
over 56G only if in legacy link-mode.
Fixes: 3d7cadae51f1 ("net/mlx5e: ethtool, Fix analysis of speed setting")
Signed-off-by: Aya Levin <ayal@xxxxxxxxxx>
Reviewed-by: Eran Ben Elisha <eranbe@xxxxxxxxxx>
Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 24 ++++++++++++++-----
1 file changed, 18 insertions(+), 6 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -976,6 +976,22 @@ static int mlx5e_get_link_ksettings(stru
return mlx5e_ethtool_get_link_ksettings(priv, link_ksettings);
}
+static int mlx5e_speed_validate(struct net_device *netdev, bool ext,
+ const unsigned long link_modes, u8 autoneg)
+{
+ /* Extended link-mode has no speed limitations. */
+ if (ext)
+ return 0;
+
+ if ((link_modes & MLX5E_PROT_MASK(MLX5E_56GBASE_R4)) &&
+ autoneg != AUTONEG_ENABLE) {
+ netdev_err(netdev, "%s: 56G link speed requires autoneg enabled\n",
+ __func__);
+ return -EINVAL;
+ }
+ return 0;
+}
+
static u32 mlx5e_ethtool2ptys_adver_link(const unsigned long *link_modes)
{
u32 i, ptys_modes = 0;
@@ -1068,13 +1084,9 @@ int mlx5e_ethtool_set_link_ksettings(str
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;
+ err = mlx5e_speed_validate(priv->netdev, ext, link_modes, autoneg);
+ if (err)
goto out;
- }
link_modes = link_modes & eproto.cap;
if (!link_modes) {
