[dpdk-dev] [PATCH] examples/ipsec-secgw: fix incorrect IPv4 checksum at TX

[Konstantin Ananyev]

For ESP transport and BYPASS mode the app might generate output
packets with invalid IPv4 header checksum.
At least such behavior was observed on few Intel NICs.
The reason is that the app didn't set ipv4 header checksum to zero
before passing it to the HW.

Fixes: 906257e965b7 ("examples/ipsec-secgw: support IPv6")

Signed-off-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
---
 examples/ipsec-secgw/ipsec-secgw.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/examples/ipsec-secgw/ipsec-secgw.c b/examples/ipsec-secgw/ipsec-secgw.c
index 5d7071657..38933341b 100644
--- a/examples/ipsec-secgw/ipsec-secgw.c
+++ b/examples/ipsec-secgw/ipsec-secgw.c
@@ -331,6 +331,7 @@ prepare_tx_pkt(struct rte_mbuf *pkt, uint16_t port)
 		pkt->l3_len = sizeof(struct ip);
 		pkt->l2_len = ETHER_HDR_LEN;
 
+		ip->ip_sum = 0;
 		ethhdr->ether_type = rte_cpu_to_be_16(ETHER_TYPE_IPv4);
 	} else {
 		pkt->ol_flags |= PKT_TX_IPV6;
-- 
2.13.6