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

Message ID 1455111338-26748-4-git-send-email-erezsh@mellanox.com (mailing list archive)
State Superseded
Headers show

Commit Message

Erez Shitrit Feb. 10, 2016, 1:35 p.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 | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index 7ddc790..98dfe6e 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -208,6 +208,9 @@  static void handle_responder(struct ib_wc *wc, struct mlx5_cqe64 *cqe,
 	case MLX5_CQE_RESP_SEND:
 		wc->opcode   = IB_WC_RECV;
 		wc->wc_flags = 0;
+		if (likely(cqe->hds_ip_ext & CQE_L3_OK) &&
+		    likely(cqe->hds_ip_ext & CQE_L4_OK))
+			wc->wc_flags |= IB_WC_IP_CSUM_OK;
 		break;
 	case MLX5_CQE_RESP_SEND_IMM:
 		wc->opcode	= IB_WC_RECV;