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net/mlx5e: Prevent bridge link show failure for non-eswitch-allowed devices

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mlx5_eswitch_get_vepa returns -EPERM if the device lacks
eswitch_manager capability, blocking mlx5e_bridge_getlink from
retrieving VEPA mode. Since mlx5e_bridge_getlink implements
ndo_bridge_getlink, returning -EPERM causes bridge link show to fail
instead of skipping devices without this capability.

To avoid this, return -EOPNOTSUPP from mlx5e_bridge_getlink when
mlx5_eswitch_get_vepa fails, ensuring the command continues processing
other devices while ignoring those without the necessary capability.

Fixes: 4b89251de0 ("net/mlx5: Support ndo bridge_setlink and getlink")
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Link: https://patch.msgid.link/1741644104-97767-7-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Carolina Jubran 2025-03-11 00:01:44 +02:00 committed by Paolo Abeni
parent 4b8eeed4fb
commit e92df790d0
1 changed files with 2 additions and 4 deletions
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6
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
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@ -5132,11 +5132,9 @@ static int mlx5e_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
struct mlx5e_priv *priv = netdev_priv(dev);
struct mlx5_core_dev *mdev = priv->mdev;
u8 mode, setting;
int err;
err = mlx5_eswitch_get_vepa(mdev->priv.eswitch, &setting);
if (err)
return err;
if (mlx5_eswitch_get_vepa(mdev->priv.eswitch, &setting))
return -EOPNOTSUPP;
mode = setting ? BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB;
return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
mode,