[PATCH V2 6/7] net/colo-compare: Add passthrough list to CompareState

[Zhang Chen]

From: Zhang Chen <chen.zhang@intel.com>

Add passthrough list for each CompareState.

Signed-off-by: Zhang Chen <chen.zhang@intel.com>
---
 net/colo-compare.c | 25 +++++++++++++++++++++++++
 net/colo-compare.h | 10 ++++++++++
 2 files changed, 35 insertions(+)

diff --git a/net/colo-compare.c b/net/colo-compare.c
index a803f8b888..80cea32c20 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -141,6 +141,7 @@ static int packet_enqueue(CompareState *s, int mode, 
Connection **con)
     ConnectionKey key;
     Packet *pkt = NULL;
     Connection *conn;
+    PassthroughEntry *bypass, *next;
     int ret;
 
     if (mode == PRIMARY_IN) {
@@ -160,6 +161,29 @@ static int packet_enqueue(CompareState *s, int mode, 
Connection **con)
     }
     fill_connection_key(pkt, &key);
 
+    /* Check COLO passthrough connenction */
+    if (!QLIST_EMPTY(&s->passthroughlist)) {
+        QLIST_FOREACH_SAFE(bypass, &s->passthroughlist, node, next) {
+            if (((key.ip_proto == IPPROTO_TCP) && (bypass->l4_protocol == 0)) 
||
+                ((key.ip_proto == IPPROTO_UDP) && (bypass->l4_protocol == 1))) 
{
+                if (bypass->src_port == 0 || bypass->src_port == key.dst_port) 
{
+                    if (bypass->src_ip.s_addr == 0 ||
+                        bypass->src_ip.s_addr == key.src.s_addr) {
+                        if (bypass->dst_port == 0 ||
+                            bypass->dst_port == key.src_port) {
+                            if (bypass->dst_ip.s_addr == 0 ||
+                                bypass->dst_ip.s_addr == key.dst.s_addr) {
+                                packet_destroy(pkt, NULL);
+                                pkt = NULL;
+                                return -1;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
     conn = connection_get(s->connection_track_table,
                           &key,
                           &s->conn_list);
@@ -1224,6 +1248,7 @@ static void colo_compare_complete(UserCreatable *uc, 
Error **errp)
     }
 
     g_queue_init(&s->conn_list);
+    QLIST_INIT(&s->passthroughlist);
 
     s->connection_track_table = g_hash_table_new_full(connection_key_hash,
                                                       connection_key_equal,
diff --git a/net/colo-compare.h b/net/colo-compare.h
index 2a9dcac0a7..31644f145b 100644
--- a/net/colo-compare.h
+++ b/net/colo-compare.h
@@ -54,6 +54,15 @@ typedef struct SendEntry {
     uint8_t *buf;
 } SendEntry;
 
+typedef struct PassthroughEntry {
+    int l4_protocol;
+    int src_port;
+    int dst_port;
+    struct in_addr src_ip;
+    struct in_addr dst_ip;
+    QLIST_ENTRY(PassthroughEntry) node;
+} PassthroughEntry;
+
 /*
  *  + CompareState ++
  *  |               |
@@ -110,6 +119,7 @@ struct CompareState {
 
     QEMUBH *event_bh;
     enum colo_event event;
+    QLIST_HEAD(, PassthroughEntry) passthroughlist;
 
     QTAILQ_ENTRY(CompareState) next;
 };
-- 
2.25.1