app/testpmd: fix L4 length for UDP checksum

testpmd only sets the L4 len in case of TCP packets.
some PMD's like tap rely on mbuf meta data to calculate csum

This will set the L4 len for UDP packets same as TCP

Fixes: 160c3dc9458c ("app/testpmd: introduce IP parsing functions in csum fwd engine")
CC: stable@dpdk.org
Signed-off-by: Raslan Darawsheh <rasland@mellanox.com>
Signed-off-by: Ophir Munk <ophirmu@mellanox.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c
index dce4b9b..ffeee20 100644 (file)
--- a/app/test-pmd/csumonly.c
+++ b/app/test-pmd/csumonly.c
@@ -111,7 +111,9 @@ parse_ipv4(struct ipv4_hdr *ipv4_hdr, struct testpmd_offload_info *info)
        if (info->l4_proto == IPPROTO_TCP) {
                tcp_hdr = (struct tcp_hdr *)((char *)ipv4_hdr + info->l3_len);
                info->l4_len = (tcp_hdr->data_off & 0xf0) >> 2;
-       } else
+       } else if (info->l4_proto == IPPROTO_UDP)
+               info->l4_len = sizeof(struct udp_hdr);
+       else
                info->l4_len = 0;
 }
 
@@ -128,7 +130,9 @@ parse_ipv6(struct ipv6_hdr *ipv6_hdr, struct testpmd_offload_info *info)
        if (info->l4_proto == IPPROTO_TCP) {
                tcp_hdr = (struct tcp_hdr *)((char *)ipv6_hdr + info->l3_len);
                info->l4_len = (tcp_hdr->data_off & 0xf0) >> 2;
-       } else
+       } else if (info->l4_proto == IPPROTO_UDP)
+               info->l4_len = sizeof(struct udp_hdr);
+       else
                info->l4_len = 0;
 }