net/mlx4_en: Implement mcast loopback prevention for ETH qps

[cascardo/linux.git] / drivers / net / ethernet / mellanox / mlx4 / en_main.c

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_main.c b/drivers/net/ethernet/mellanox/mlx4/en_main.c
index a946e4b..005f910 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_main.c
@@ -123,6 +123,28 @@ void mlx4_en_update_loopback_state(struct net_device *dev,
         */
        if (mlx4_is_mfunc(priv->mdev->dev) || priv->validate_loopback)
                priv->flags |= MLX4_EN_FLAG_ENABLE_HW_LOOPBACK;
+
+       mutex_lock(&priv->mdev->state_lock);
+       if (priv->mdev->dev->caps.flags2 &
+           MLX4_DEV_CAP_FLAG2_UPDATE_QP_SRC_CHECK_LB &&
+           priv->rss_map.indir_qp.qpn) {
+               int i;
+               int err = 0;
+               int loopback = !!(features & NETIF_F_LOOPBACK);
+
+               for (i = 0; i < priv->rx_ring_num; i++) {
+                       int ret;
+
+                       ret = mlx4_en_change_mcast_lb(priv,
+                                                     &priv->rss_map.qps[i],
+                                                     loopback);
+                       if (!err)
+                               err = ret;
+               }
+               if (err)
+                       mlx4_warn(priv->mdev, "failed to change mcast loopback\n");
+       }
+       mutex_unlock(&priv->mdev->state_lock);
 }
 
 static int mlx4_en_get_profile(struct mlx4_en_dev *mdev)