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Diffstat (limited to 'net/ipv4/ipvs/ip_vs_ctl.c')
-rw-r--r--net/ipv4/ipvs/ip_vs_ctl.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/net/ipv4/ipvs/ip_vs_ctl.c b/net/ipv4/ipvs/ip_vs_ctl.c
index 7345fc252a23..3c4d22a468ec 100644
--- a/net/ipv4/ipvs/ip_vs_ctl.c
+++ b/net/ipv4/ipvs/ip_vs_ctl.c
@@ -579,6 +579,32 @@ ip_vs_lookup_dest(struct ip_vs_service *svc, __be32 daddr, __be16 dport)
return NULL;
}
+/*
+ * Find destination by {daddr,dport,vaddr,protocol}
+ * Cretaed to be used in ip_vs_process_message() in
+ * the backup synchronization daemon. It finds the
+ * destination to be bound to the received connection
+ * on the backup.
+ *
+ * ip_vs_lookup_real_service() looked promissing, but
+ * seems not working as expected.
+ */
+struct ip_vs_dest *ip_vs_find_dest(__be32 daddr, __be16 dport,
+ __be32 vaddr, __be16 vport, __u16 protocol)
+{
+ struct ip_vs_dest *dest;
+ struct ip_vs_service *svc;
+
+ svc = ip_vs_service_get(0, protocol, vaddr, vport);
+ if (!svc)
+ return NULL;
+ dest = ip_vs_lookup_dest(svc, daddr, dport);
+ if (dest)
+ atomic_inc(&dest->refcnt);
+ ip_vs_service_put(svc);
+ return dest;
+}
+EXPORT_SYMBOL(ip_vs_find_dest);
/*
* Lookup dest by {svc,addr,port} in the destination trash.