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net/mlx5: Disable devlink reload for lag devices

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[ Upstream commit edac23c2b3d3ac64cfcd351087295893671adbf5 ]

Devlink reload can't be allowed on lag devices since reloading one lag
device will cause traffic on the bond to get stucked.
Users who wish to reload a lag device, need to remove the device from
the bond, and only then reload it.

Fixes: 4383cfcc65 ("net/mlx5: Add devlink reload")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Shay Drory 2020-12-31 15:04:08 +02:00 committed by Greg Kroah-Hartman
parent 5decdc86ca
commit 046e29284b
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/mellanox/mlx5/core/devlink.c
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@ -137,6 +137,11 @@ static int mlx5_devlink_reload_down(struct devlink *devlink, bool netns_change,
{
struct mlx5_core_dev *dev = devlink_priv(devlink);
if (mlx5_lag_is_active(dev)) {
NL_SET_ERR_MSG_MOD(extack, "reload is unsupported in Lag mode\n");
return -EOPNOTSUPP;
}
switch (action) {
case DEVLINK_RELOAD_ACTION_DRIVER_REINIT:
mlx5_unload_one(dev, false);