[PATCH v2] net/iavf: fix outer udp checksum offload

[Zhichao Zeng]

Currently, when dealing with UDP tunnel pkts checksum offloading,
the outer-udp checksum will be offloaded by default. So the
'csum set outer-udp hw/sw' command does not work.

This patch fixes judgment of the EIPT flag and enables the
'csum set outer-udp hw/sw' command by adding judgment for the
outer-udp checksum offload flag.

Fixes: 0c550022fb82 ("net/iavf: fix Tx descriptors for IPsec")

Signed-off-by: Zhichao Zeng <zhichaox.zeng at intel.com>
---
 drivers/net/iavf/iavf_rxtx.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c
index cf87a6beda..8d49967538 100644
--- a/drivers/net/iavf/iavf_rxtx.c
+++ b/drivers/net/iavf/iavf_rxtx.c
@@ -2453,8 +2453,11 @@ iavf_fill_ctx_desc_tunnelling_field(volatile uint64_t *qw0,
 		 * Calculate the tunneling UDP checksum.
 		 * Shall be set only if L4TUNT = 01b and EIPT is not zero
 		 */
-		if (!(eip_typ & IAVF_TX_CTX_EXT_IP_NONE) &&
-		    (eip_typ & IAVF_TXD_CTX_UDP_TUNNELING))
+		if ((eip_typ & (IAVF_TX_CTX_EXT_IP_IPV6 |
+					IAVF_TX_CTX_EXT_IP_IPV4 |
+					IAVF_TX_CTX_EXT_IP_IPV4_NO_CSUM)) &&
+				(eip_typ & IAVF_TXD_CTX_UDP_TUNNELING) &&
+				(m->ol_flags & RTE_MBUF_F_TX_OUTER_UDP_CKSUM))
 			eip_typ |= IAVF_TXD_CTX_QW0_L4T_CS_MASK;
 	}
 
-- 
2.25.1