diff options
Diffstat (limited to 'drivers/net/mlx4/en_rx.c')
| -rw-r--r-- | drivers/net/mlx4/en_rx.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/mlx4/en_rx.c b/drivers/net/mlx4/en_rx.c index 7a5123c4a366..f421a3d42723 100644 --- a/drivers/net/mlx4/en_rx.c +++ b/drivers/net/mlx4/en_rx.c @@ -541,6 +541,21 @@ static struct sk_buff *mlx4_en_rx_skb(struct mlx4_en_priv *priv, return skb; } +static void validate_loopback(struct mlx4_en_priv *priv, struct sk_buff *skb) +{ + int i; + int offset = ETH_HLEN; + + for (i = 0; i < MLX4_LOOPBACK_TEST_PAYLOAD; i++, offset++) { + if (*(skb->data + offset) != (unsigned char) (i & 0xff)) + goto out_loopback; + } + /* Loopback found */ + priv->loopback_ok = 1; + +out_loopback: + dev_kfree_skb_any(skb); +} int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int budget) { @@ -655,6 +670,11 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud goto next; } + if (unlikely(priv->validate_loopback)) { + validate_loopback(priv, skb); + goto next; + } + skb->ip_summed = ip_summed; skb->protocol = eth_type_trans(skb, dev); skb_record_rx_queue(skb, cq->ring); |