drbd: Convert the generic netlink interface to accept connection endpoints

[deliverable/linux.git] / drivers / block / drbd / drbd_main.c

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 178c711bc4af8df5f1eb7b52089eafe356826c1b..79f275dc43a4f5231d13f56534a5dbbfe20825db 100644 (file)
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2420,6 +2420,27 @@ found:
        return tconn;
 }
 
+struct drbd_tconn *conn_get_by_addrs(void *my_addr, int my_addr_len,
+                                    void *peer_addr, int peer_addr_len)
+{
+       struct drbd_tconn *tconn;
+
+       rcu_read_lock();
+       list_for_each_entry_rcu(tconn, &drbd_tconns, all_tconn) {
+               if (tconn->my_addr_len == my_addr_len &&
+                   tconn->peer_addr_len == peer_addr_len &&
+                   !memcmp(&tconn->my_addr, my_addr, my_addr_len) &&
+                   !memcmp(&tconn->peer_addr, peer_addr, peer_addr_len)) {
+                       kref_get(&tconn->kref);
+                       goto found;
+               }
+       }
+       tconn = NULL;
+found:
+       rcu_read_unlock();
+       return tconn;
+}
+
 static int drbd_alloc_socket(struct drbd_socket *socket)
 {
        socket->rbuf = (void *) __get_free_page(GFP_KERNEL);