Adding checksum to ICMP packets created by OVS for testing.

OVS provides a utility to create ICMP packets for the purpose of
testing using ovs-appctl netdev-dummy/receive.  These packets created
by flow_compose() earlier did not have the ICMP checksum in them.
With this commit, the checksum will be added to these test ICMP
packets.

Signed-off-by: Mehak Mahajan <mmahajan@nicira.com>

diff --git a/lib/flow.c b/lib/flow.c
index 59158ac..5d2f33c 100644 (file)
--- a/lib/flow.c
+++ b/lib/flow.c
@@ -1066,6 +1066,7 @@ flow_compose(struct ofpbuf *b, const struct flow *flow)
                 b->l4 = icmp = ofpbuf_put_zeros(b, sizeof *icmp);
                 icmp->icmp_type = ntohs(flow->tp_src);
                 icmp->icmp_code = ntohs(flow->tp_dst);
+                icmp->icmp_csum = csum(icmp, ICMP_HEADER_LEN);
             }
         }