[dpdk-dev] [dpdk-dev 1/2] lib: fix ipv6 tunnel csum issue

[Jeff Guo]

When packet is flag of "PKT_TX_OUTER_IPV6", it also need to be 
considered to be tunnel case, in order to calculate the correct
csum value.

Fixes: 2b76648872c9 ("net/e1000: add Tx preparation")
Signed-off-by: Jeff Guo <jia.guo at intel.com>
---
 lib/librte_net/rte_net.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/librte_net/rte_net.h b/lib/librte_net/rte_net.h
index 548eaed..79c764a 100644
--- a/lib/librte_net/rte_net.h
+++ b/lib/librte_net/rte_net.h
@@ -120,7 +120,8 @@ rte_net_intel_cksum_flags_prepare(struct rte_mbuf *m, uint64_t ol_flags)
 	struct udp_hdr *udp_hdr;
 	uint64_t inner_l3_offset = m->l2_len;
 
-	if (ol_flags & PKT_TX_OUTER_IP_CKSUM)
+	if ((ol_flags & PKT_TX_OUTER_IP_CKSUM) ||
+		(ol_flags & PKT_TX_OUTER_IPV6))
 		inner_l3_offset += m->outer_l2_len + m->outer_l3_len;
 
 	if ((ol_flags & PKT_TX_UDP_CKSUM) == PKT_TX_UDP_CKSUM) {
-- 
2.7.4