[Qemu-devel] [PATCH V3 10/10] net/colo-compare.c: Add vnet packet's tcp/udp/icmp compare

[Zhang Chen <zhangchen.fnst@cn.fujitsu.com>]

COLO-Proxy just focus on packet payload, So we skip vnet header.

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
---
 net/colo-compare.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/net/colo-compare.c b/net/colo-compare.c
index b3e933c..1941ad9 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -187,6 +187,8 @@ static int packet_enqueue(CompareState *s, int mode)
  */
 static int colo_packet_compare_common(Packet *ppkt, Packet *spkt, int offset)
 {
+    int offset_all;
+
     if (trace_event_get_state(TRACE_COLO_COMPARE_MISCOMPARE)) {
         char pri_ip_src[20], pri_ip_dst[20], sec_ip_src[20], sec_ip_dst[20];
 
@@ -200,9 +202,12 @@ static int colo_packet_compare_common(Packet *ppkt, Packet *spkt, int offset)
                                    sec_ip_src, sec_ip_dst);
     }
 
+    offset_all = ppkt->vnet_hdr_len + offset;
+
     if (ppkt->size == spkt->size) {
-        return memcmp(ppkt->data + offset, spkt->data + offset,
-                      spkt->size - offset);
+        return memcmp(ppkt->data + offset_all,
+                      spkt->data + offset_all,
+                      spkt->size - offset_all);
     } else {
         trace_colo_compare_main("Net packet size are not the same");
         return -1;
-- 
2.7.4