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RDMA/mlx5: Check RoCE LAG status before getting netdev

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Check if RoCE LAG is active before calling the LAG layer for netdev.
This clarifies if LAG is active. No behavior changes with this patch.

Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Michael Guralnik <michaelgur@nvidia.com>
Link: https://patch.msgid.link/20240909173025.30422-2-michaelgur@nvidia.com
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Mark Bloch 2024-09-09 20:30:19 +03:00 committed by Leon Romanovsky
parent c77aec65e8
commit 303ee44ac4
1 changed files with 13 additions and 6 deletions
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19
drivers/infiniband/hw/mlx5/main.c
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@ -198,12 +198,18 @@ static int mlx5_netdev_event(struct notifier_block *this,
case NETDEV_CHANGE:
case NETDEV_UP:
case NETDEV_DOWN: {
struct net_device *lag_ndev = mlx5_lag_get_roce_netdev(mdev);
struct net_device *upper = NULL;
if (lag_ndev) {
upper = netdev_master_upper_dev_get(lag_ndev);
dev_put(lag_ndev);
if (mlx5_lag_is_roce(mdev)) {
struct net_device *lag_ndev;
lag_ndev = mlx5_lag_get_roce_netdev(mdev);
if (lag_ndev) {
upper = netdev_master_upper_dev_get(lag_ndev);
dev_put(lag_ndev);
} else {
goto done;
}
}
if (ibdev->is_rep)
@ -257,9 +263,10 @@ static struct net_device *mlx5_ib_get_netdev(struct ib_device *device,
if (!mdev)
return NULL;
ndev = mlx5_lag_get_roce_netdev(mdev);
if (ndev)
if (mlx5_lag_is_roce(mdev)) {
ndev = mlx5_lag_get_roce_netdev(mdev);
goto out;
}
/* Ensure ndev does not disappear before we invoke dev_hold()
*/