[dpdk-dev] [PATCH] net/mlx5: fix TSO header size in case of VLAN insertion

[Shahaf Shuler]

When VLAN insertion is requested the vlan size must be added to the
calculation of the TSO header size, as it is not embedded within the
mbuf l2 length.

Fixes: 98083fd482a2 ("net/mlx5: add hardware TSO support")
Cc: stable at dpdk.org

Signed-off-by: Shahaf Shuler <shahafs at mellanox.com>
---
 drivers/net/mlx5/mlx5_rxtx.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index 823aac8..9e8c6d0 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -548,10 +548,11 @@
 							buf->ol_flags &
 							(PKT_TX_TUNNEL_GRE |
 							 PKT_TX_TUNNEL_VXLAN);
+				uint8_t vlan_sz = (buf->ol_flags &
+						  PKT_TX_VLAN_PKT) ? 4 : 0;
 
-				tso_header_sz = buf->l2_len + buf->l3_len +
-						buf->l4_len;
-
+				tso_header_sz = buf->l2_len + vlan_sz +
+						buf->l3_len + buf->l4_len;
 				if (is_tunneled	&& txq->tunnel_en) {
 					tso_header_sz += buf->outer_l2_len +
 							 buf->outer_l3_len;
-- 
1.8.3.1