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net/mlx5: Get RoCE netdev 

Used by IB driver for determining the IB bond
device's netdev, when LAG is active.

Returns PF0's netdev if mode is not active-backup,
or the PF netdev of the active slave when mode is
active-backup.

Signed-off-by: Aviv Heller <avivh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Aviv Heller 2016-05-09 11:06:44 +00:00 committed by Leon Romanovsky
parent 7907f23adc
commit 6a32047a44
2 changed files with 28 additions and 0 deletions
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27
drivers/net/ethernet/mellanox/mlx5/core/lag.c
View File

@ -528,3 +528,30 @@ bool mlx5_lag_is_active(struct mlx5_core_dev *dev)
}
EXPORT_SYMBOL(mlx5_lag_is_active);
struct net_device *mlx5_lag_get_roce_netdev(struct mlx5_core_dev *dev)
{
struct net_device *ndev = NULL;
struct mlx5_lag *ldev;
mutex_lock(&lag_mutex);
ldev = mlx5_lag_dev_get(dev);
if (!(ldev && mlx5_lag_is_bonded(ldev)))
goto unlock;
if (ldev->tracker.tx_type == NETDEV_LAG_TX_TYPE_ACTIVEBACKUP) {
ndev = ldev->tracker.netdev_state[0].tx_enabled ?
ldev->pf[0].netdev : ldev->pf[1].netdev;
} else {
ndev = ldev->pf[0].netdev;
}
if (ndev)
dev_hold(ndev);
unlock:
mutex_unlock(&lag_mutex);
return ndev;
}
EXPORT_SYMBOL(mlx5_lag_get_roce_netdev);

1
include/linux/mlx5/driver.h
View File

@ -945,6 +945,7 @@ void mlx5_unregister_interface(struct mlx5_interface *intf);
int mlx5_core_query_vendor_id(struct mlx5_core_dev *mdev, u32 *vendor_id);
bool mlx5_lag_is_active(struct mlx5_core_dev *dev);
struct net_device *mlx5_lag_get_roce_netdev(struct mlx5_core_dev *dev);
struct mlx5_profile {
u64 mask;