[PATCH v5 05/11] net/mlx5: cleanup tunnel checksum offloads

[Xueming Li <xuemingl@mellanox.com>]

This patch cleanup tunnel checksum offloads.

Once tunnel packet type(RTE_PTYPE_TUNNEL_xxx) identified,
PKT_RX_IP_CKSUM_XXX and PKT_RX_L4_CKSUM_XXX represent checksum result of
inner headers, outer L3 and L4 header checksum are always valid as soon
as tunnel identified. If no tunnel identified, PKT_RX_IP_CKSUM_XXX and
PKT_RX_L4_CKSUM_XXX represent checksum result of outer L3 and L4
headers.

Signed-off-by: Xueming Li <xuemingl@mellanox.com>
---
 drivers/net/mlx5/mlx5_rxq.c  |  2 --
 drivers/net/mlx5/mlx5_rxtx.c | 18 ++++--------------
 drivers/net/mlx5/mlx5_rxtx.h |  1 -
 3 files changed, 4 insertions(+), 17 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index 1fbd02aa0..6756f25fa 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -1045,8 +1045,6 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
 	}
 	/* Toggle RX checksum offload if hardware supports it. */
 	tmpl->rxq.csum = !!(conf->offloads & DEV_RX_OFFLOAD_CHECKSUM);
-	tmpl->rxq.csum_l2tun = (!!(conf->offloads & DEV_RX_OFFLOAD_CHECKSUM) &&
-				priv->config.tunnel_en);
 	tmpl->rxq.hw_timestamp = !!(conf->offloads & DEV_RX_OFFLOAD_TIMESTAMP);
 	/* Configure VLAN stripping. */
 	tmpl->rxq.vlan_strip = !!(conf->offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index fafac514b..060ff0e85 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -41,7 +41,7 @@ mlx5_rx_poll_len(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
 		 uint16_t cqe_cnt, uint32_t *rss_hash);
 
 static __rte_always_inline uint32_t
-rxq_cq_to_ol_flags(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe);
+rxq_cq_to_ol_flags(volatile struct mlx5_cqe *cqe);
 
 uint32_t mlx5_ptype_table[] __rte_cache_aligned = {
 	[0xff] = RTE_PTYPE_ALL_MASK, /* Last entry for errored packet. */
@@ -1728,8 +1728,6 @@ mlx5_rx_poll_len(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
 /**
  * Translate RX completion flags to offload flags.
  *
- * @param[in] rxq
- *   Pointer to RX queue structure.
  * @param[in] cqe
  *   Pointer to CQE.
  *
@@ -1737,7 +1735,7 @@ mlx5_rx_poll_len(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
  *   Offload flags (ol_flags) for struct rte_mbuf.
  */
 static inline uint32_t
-rxq_cq_to_ol_flags(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe)
+rxq_cq_to_ol_flags(volatile struct mlx5_cqe *cqe)
 {
 	uint32_t ol_flags = 0;
 	uint16_t flags = rte_be_to_cpu_16(cqe->hdr_type_etc);
@@ -1749,14 +1747,6 @@ rxq_cq_to_ol_flags(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe)
 		TRANSPOSE(flags,
 			  MLX5_CQE_RX_L4_HDR_VALID,
 			  PKT_RX_L4_CKSUM_GOOD);
-	if ((cqe->pkt_info & MLX5_CQE_RX_TUNNEL_PACKET) && (rxq->csum_l2tun))
-		ol_flags |=
-			TRANSPOSE(flags,
-				  MLX5_CQE_RX_L3_HDR_VALID,
-				  PKT_RX_IP_CKSUM_GOOD) |
-			TRANSPOSE(flags,
-				  MLX5_CQE_RX_L4_HDR_VALID,
-				  PKT_RX_L4_CKSUM_GOOD);
 	return ol_flags;
 }
 
@@ -1855,8 +1845,8 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
 						mlx5_flow_mark_get(mark);
 				}
 			}
-			if (rxq->csum | rxq->csum_l2tun)
-				pkt->ol_flags |= rxq_cq_to_ol_flags(rxq, cqe);
+			if (rxq->csum)
+				pkt->ol_flags |= rxq_cq_to_ol_flags(cqe);
 			if (rxq->vlan_strip &&
 			    (cqe->hdr_type_etc &
 			     rte_cpu_to_be_16(MLX5_CQE_VLAN_STRIPPED))) {
diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h
index 676ad6a9a..188fd65c5 100644
--- a/drivers/net/mlx5/mlx5_rxtx.h
+++ b/drivers/net/mlx5/mlx5_rxtx.h
@@ -77,7 +77,6 @@ struct rxq_zip {
 /* RX queue descriptor. */
 struct mlx5_rxq_data {
 	unsigned int csum:1; /* Enable checksum offloading. */
-	unsigned int csum_l2tun:1; /* Same for L2 tunnels. */
 	unsigned int hw_timestamp:1; /* Enable HW timestamp. */
 	unsigned int vlan_strip:1; /* Enable VLAN stripping. */
 	unsigned int crc_present:1; /* CRC must be subtracted. */
-- 
2.13.3