From: Aviv Heller <av...@mellanox.com>
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 <av...@mellanox.com>
Signed-off-by: Saeed Mahameed <sae...@mellanox.com>
Signed-off-by: Leon Romanovsky <l...@kernel.org>
---
drivers/net/ethernet/mellanox/mlx5/core/lag.c | 27 +++++++++++++++++++++++++++
include/linux/mlx5/driver.h | 1 +
2 files changed, 28 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag.c
b/drivers/net/ethernet/mellanox/mlx5/core/lag.c
index 3bf0a7f..9523050 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag.c
@@ -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);
+
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index ed983b8..c568dd9 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -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;
--
2.7.4
