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Commit ce5a453c authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

net/mlx4_en: CHECKSUM_COMPLETE support for fragments 



Refine the RX check summing handling to propagate the
hardware provided checksum so that we do not have to
compute it later in software.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Acked-by: default avatarTariq Toukan <tariqt@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2919ee2d

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

+4 −6
Original line number Diff line number Diff line
@@ -821,14 +821,12 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud 
		skb_record_rx_queue(skb, cq_ring);



		if (likely(dev->features & NETIF_F_RXCSUM)) {

			if (cqe->status & cpu_to_be16(MLX4_CQE_STATUS_TCP |

						      MLX4_CQE_STATUS_UDP)) {

			if ((cqe->status & cpu_to_be16(MLX4_CQE_STATUS_TCP |

						       MLX4_CQE_STATUS_UDP)) &&

			    (cqe->status & cpu_to_be16(MLX4_CQE_STATUS_IPOK)) &&

			    cqe->checksum == cpu_to_be16(0xffff)) {

				bool l2_tunnel;



				if (!((cqe->status & cpu_to_be16(MLX4_CQE_STATUS_IPOK)) &&

				      cqe->checksum == cpu_to_be16(0xffff)))

					goto csum_none;



				l2_tunnel = (dev->hw_enc_features & NETIF_F_RXCSUM) &&

					(cqe->vlan_my_qpn & cpu_to_be32(MLX4_CQE_L2_TUNNEL));

				ip_summed = CHECKSUM_UNNECESSARY;