[dpdk-dev] [PATCH RFC 10/11] testpmd: modify source address to validate checksum calculation

[Olivier Matz <olivier.matz@6wind.com>]

Always modify the source address of the packet in order to validate
the calculation of the checksums (L3 or L4). This was already done
for IPv4 software checksum, add it for IPv4 hw checksum and IPv6.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
 app/test-pmd/csumonly.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c
index 9caad8f..e93d75f 100644
--- a/app/test-pmd/csumonly.c
+++ b/app/test-pmd/csumonly.c
@@ -310,6 +310,7 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
 
 			if (tx_ol_flags & PKT_TX_IP_CKSUM) {
 				/* HW checksum */
+				ipv4_hdr->src_addr--;
 				ol_flags |= PKT_TX_IP_CKSUM;
 			}
 			else {
@@ -373,6 +374,7 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
 					unsigned char *) + l2_len);
 			l3_len = sizeof(struct ipv6_hdr) ;
 			l4_proto = ipv6_hdr->proto;
+			ipv6_hdr->src_addr[3]--;
 
 			if (l4_proto == IPPROTO_UDP) {
 				udp_hdr = (struct udp_hdr*) (rte_pktmbuf_mtod(mb,
-- 
1.9.2