filter-rewriter: track connection and parse packet

We use net/colo.h to track connection and parse packet

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/net/colo.c b/net/colo.c
index 94f5992..124994c 100644
--- a/net/colo.c
+++ b/net/colo.c
@@ -114,6 +114,20 @@ void fill_connection_key(Packet *pkt, ConnectionKey *key)
     }
 }
 
+void reverse_connection_key(ConnectionKey *key)
+{
+    struct in_addr tmp_ip;
+    uint16_t tmp_port;
+
+    tmp_ip = key->src;
+    key->src = key->dst;
+    key->dst = tmp_ip;
+
+    tmp_port = key->src_port;
+    key->src_port = key->dst_port;
+    key->dst_port = tmp_port;
+}
+
 Connection *connection_new(ConnectionKey *key)
 {
     Connection *conn = g_slice_new(Connection);