[dpdk-dev] [PATCH v2 2/2] net/mlx5: add hardware TSO support for VXLAN and GRE

[Shahaf Shuler]

This commit adds support for hardware TSO for tunneled packets.

Signed-off-by: Shahaf Shuler <shahafs at mellanox.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
---
 drivers/net/mlx5/mlx5_ethdev.c | 4 +++-
 drivers/net/mlx5/mlx5_rxtx.c   | 9 +++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 8be9e77..5deb6e8 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -696,7 +696,9 @@ struct priv *
 	if (priv->tso)
 		info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
 	if (priv->tunnel_en)
-		info->tx_offload_capa |= DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM;
+		info->tx_offload_capa |= (DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM |
+					  DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
+					  DEV_TX_OFFLOAD_GRE_TNL_TSO);
 	if (priv_get_ifname(priv, &ifname) == 0)
 		info->if_index = if_nametoindex(ifname);
 	/* FIXME: RETA update/query API expects the callee to know the size of
diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index cba9dc9..112709a 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -488,9 +488,18 @@
 						(1 << txq->wqe_n) *
 						MLX5_WQE_SIZE);
 				unsigned int copy_b;
+				const uint64_t is_tunneled =
+							buf->ol_flags &
+							(PKT_TX_TUNNEL_GRE |
+							 PKT_TX_TUNNEL_VXLAN);
 
 				tso_header_sz = buf->l2_len + buf->l3_len +
 						buf->l4_len;
+
+				if (is_tunneled	&& txq->tunnel_en) {
+					tso_header_sz += buf->outer_l2_len +
+							 buf->outer_l3_len;
+				}
 				if (unlikely(tso_header_sz >
 					     MLX5_MAX_TSO_HEADER))
 					break;
-- 
1.8.3.1