Commit 0a6d4245 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

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: default avatarEric Dumazet <edumazet@google.com>
Cc: Amir Vadai <amirv@mellanox.com>
Cc: Ido Shamay <idos@mellanox.com>
Acked-by: default avatarIdo Shamay <idos@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 71c33537

drivers/net/ethernet/mellanox/mlx4/en_rx.c

+6 −2
Original line number Diff line number Diff line
@@ -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) &

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