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[V1,for-next,3/3] IB/mlx5: Add support for CSUM in RX flow

Message ID 1455695339-10389-4-git-send-email-erezsh@mellanox.com (mailing list archive)
State Superseded
Headers show

Commit Message

Erez Shitrit Feb. 17, 2016, 7:48 a.m. UTC 
The driver checks the csum from the HW when completion arrived and marks
it in the wc->wc_flags field for the ulp drivers.
These is for packets from type IB_WC_RECV only.

Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
---
 drivers/infiniband/hw/mlx5/cq.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index 7ddc790..b0bdc31 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -207,7 +207,10 @@  static void handle_responder(struct ib_wc *wc, struct mlx5_cqe64 *cqe,
 		break;
 	case MLX5_CQE_RESP_SEND:
 		wc->opcode   = IB_WC_RECV;
-		wc->wc_flags = 0;
+		wc->wc_flags = IB_WC_IP_CSUM_OK;
+		if (!(unlikely(cqe->hds_ip_ext & CQE_L3_OK) &&
+		      unlikely(cqe->hds_ip_ext & CQE_L4_OK)))
+			wc->wc_flags = 0;
 		break;
 	case MLX5_CQE_RESP_SEND_IMM:
 		wc->opcode	= IB_WC_RECV;