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mlx4: TCP/UDP packets have L4 hash 

Mellanox driver has the knowledge if rxhash is a L4 hash,
if it receives a non fragmented TCP or UDP frame and
NETIF_F_RXCSUM is enabled on netdev.

ip_summed value is CHECKSUM_UNNECESSARY in this case.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Amir Vadai <amirv@mellanox.com>
Cc: Ido Shamay <idos@mellanox.com>
Acked-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2015-07-02 13:24:44 +02:00 committed by David S. Miller
parent 71c3353775
commit 0a6d424569
1 changed files with 6 additions and 2 deletions
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4
drivers/net/ethernet/mellanox/mlx4/en_rx.c
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@ -917,6 +917,8 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
if (dev->features & NETIF_F_RXHASH)
skb_set_hash(gro_skb,
be32_to_cpu(cqe->immed_rss_invalid),
(ip_summed == CHECKSUM_UNNECESSARY) ?
PKT_HASH_TYPE_L4 :
PKT_HASH_TYPE_L3);
skb_record_rx_queue(gro_skb, cq->ring);
@ -963,6 +965,8 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
if (dev->features & NETIF_F_RXHASH)
skb_set_hash(skb,
be32_to_cpu(cqe->immed_rss_invalid),
(ip_summed == CHECKSUM_UNNECESSARY) ?
PKT_HASH_TYPE_L4 :
PKT_HASH_TYPE_L3);
if ((be32_to_cpu(cqe->vlan_my_qpn) &