1 files changed, 26 insertions, 0 deletions

diff --git a/net/sctp/bind_addr.c b/net/sctp/bind_addr.c
index 432661174789..13fbfb449a55 100644
--- a/net/sctp/bind_addr.c
+++ b/net/sctp/bind_addr.c
@@ -353,6 +353,32 @@ int sctp_bind_addr_match(struct sctp_bind_addr *bp,
         return match;
 }
 
+/* Get the state of the entry in the bind_addr_list */
+int sctp_bind_addr_state(const struct sctp_bind_addr *bp,
+                         const union sctp_addr *addr)
+{
+        struct sctp_sockaddr_entry *laddr;
+        struct sctp_af *af;
+        int state = -1;
+
+        af = sctp_get_af_specific(addr->sa.sa_family);
+        if (unlikely(!af))
+                return state;
+
+        rcu_read_lock();
+        list_for_each_entry_rcu(laddr, &bp->address_list, list) {
+                if (!laddr->valid)
+                        continue;
+                if (af->cmp_addr(&laddr->a, addr)) {
+                        state = laddr->state;
+                        break;
+                }
+        }
+        rcu_read_unlock();
+
+        return state;
+}
+
 /* Find the first address in the bind address list that is not present in
  * the addrs packed array.
  */