colo: Consolidate the duplicate code chunk into a routine

Consolidate the code that extract the ip address(src,dst) and
port number(src,dst) of the packet into a separate routine
extract_ip_and_port() since the same chunk of code is called
from two place.

Cc: Zhang Chen <zhangckid@gmail.com>
Cc: Li Zhijian <lizhijian@cn.fujitsu.com>
Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

diff --git a/net/colo.c b/net/colo.c
index 28ce7c8ae04d7418c8f668359234d8cb57e7baf6..a39d600f34b934b90e472e457e64f9acc01b01fb 100644 (file)
--- a/net/colo.c
+++ b/net/colo.c
@@ -82,6 +82,14 @@ int parse_packet_early(Packet *pkt)
     return 0;
 }
 
+void extract_ip_and_port(uint32_t tmp_ports, ConnectionKey *key, Packet *pkt)
+{
+        key->src = pkt->ip->ip_src;
+        key->dst = pkt->ip->ip_dst;
+        key->src_port = ntohs(tmp_ports >> 16);
+        key->dst_port = ntohs(tmp_ports & 0xffff);
+}
+
 void fill_connection_key(Packet *pkt, ConnectionKey *key)
 {
     uint32_t tmp_ports;
@@ -97,17 +105,11 @@ void fill_connection_key(Packet *pkt, ConnectionKey *key)
     case IPPROTO_SCTP:
     case IPPROTO_UDPLITE:
         tmp_ports = *(uint32_t *)(pkt->transport_header);
-        key->src = pkt->ip->ip_src;
-        key->dst = pkt->ip->ip_dst;
-        key->src_port = ntohs(tmp_ports & 0xffff);
-        key->dst_port = ntohs(tmp_ports >> 16);
+        extract_ip_and_port(tmp_ports, key, pkt);
         break;
     case IPPROTO_AH:
         tmp_ports = *(uint32_t *)(pkt->transport_header + 4);
-        key->src = pkt->ip->ip_src;
-        key->dst = pkt->ip->ip_dst;
-        key->src_port = ntohs(tmp_ports & 0xffff);
-        key->dst_port = ntohs(tmp_ports >> 16);
+        extract_ip_and_port(tmp_ports, key, pkt);
         break;
     default:
         break;

diff --git a/net/colo.h b/net/colo.h
index caedb0dca7c4c86fd5b38ec284cbbe1c2f1562f3..0658e869b4fa4cdbf7bb14f39a0e864c874f46d7 100644 (file)
--- a/net/colo.h
+++ b/net/colo.h
@@ -76,6 +76,7 @@ typedef struct Connection {
 uint32_t connection_key_hash(const void *opaque);
 int connection_key_equal(const void *opaque1, const void *opaque2);
 int parse_packet_early(Packet *pkt);
+void extract_ip_and_port(uint32_t tmp_ports, ConnectionKey *key, Packet *pkt);
 void fill_connection_key(Packet *pkt, ConnectionKey *key);
 void reverse_connection_key(ConnectionKey *key);
 Connection *connection_new(ConnectionKey *key);