[dpdk-dev] [PATCH 09/18] net/mlx5: support tunnel inner csum offloads

[Xueming Li]

PKT_RX_IP_CKSUM_GOOD and PKT_RX_L4_CKSUM_GOOD of mubf.ol_flags now are
inner header checksum when packet is tunneled.

Signed-off-by: Xueming Li <xuemingl at mellanox.com>
---
 drivers/net/mlx5/mlx5_flow.c | 13 +++++++++++++
 drivers/net/mlx5/mlx5_rxq.c  |  2 --
 drivers/net/mlx5/mlx5_rxtx.c | 18 ++++--------------
 drivers/net/mlx5/mlx5_rxtx.h |  1 -
 4 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 10f6413..755355e 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -812,8 +812,15 @@ struct ibv_spec_header {
 {
 	const struct mlx5_flow_items *cur_item = mlx5_flow_items;
 	unsigned int i;
+	int csum_en = 0;
+	struct mlx5_rxq_data *q;
 
 	(void)priv;
+	/* Check if checksum offloading  */
+	for (i = 0; i != parser->queues_n; ++i) {
+		q = (*priv->rxqs)[parser->queues[i]];
+		csum_en |= q->csum;
+	}
 	/* Initialise the offsets to start after verbs attribute. */
 	for (i = 0; i != hash_rxq_init_n; ++i)
 		parser->queue[i].offset = sizeof(struct ibv_flow_attr);
@@ -850,6 +857,12 @@ struct ibv_spec_header {
 						   " tunnel encapsulations.");
 				return -rte_errno;
 			}
+			if (!priv->config.tunnel_en && csum_en)
+				rte_flow_error_set(error, ENOTSUP,
+					RTE_FLOW_ERROR_TYPE_ITEM,
+					items,
+					"Cannot support hw tunnel checksum "
+					"offloads");
 			parser->inner = IBV_FLOW_SPEC_INNER;
 		}
 		if (parser->drop) {
diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index 238fa7e..9bc8b30 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -1005,8 +1005,6 @@ struct mlx5_rxq_ctrl*
 	}
 	/* 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 dc4ead9..d9bfc9b 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -41,7 +41,7 @@
 		 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. */
@@ -1688,8 +1688,6 @@
 /**
  * Translate RX completion flags to offload flags.
  *
- * @param[in] rxq
- *   Pointer to RX queue structure.
  * @param[in] cqe
  *   Pointer to CQE.
  *
@@ -1697,7 +1695,7 @@
  *   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);
@@ -1709,14 +1707,6 @@
 		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;
 }
 
@@ -1815,8 +1805,8 @@
 						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 d7e8905..7fce001 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. */
-- 
1.8.3.1