From ce5a453c4421ccd68a98fd987b6878923c549be2 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 27 Mar 2018 14:21:14 -0700 Subject: [PATCH] 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: Eric Dumazet Cc: Willem de Bruijn Cc: Tariq Toukan Acked-by: Tariq Toukan Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index 05787efef492..5c613c6663da 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -821,14 +821,12 @@ xdp_drop_no_cnt: 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; -- 2.30.2