tipc: use explicit allocation of broadcast send link

[cascardo/linux.git] / net / tipc / link.c

diff --git a/net/tipc/link.c b/net/tipc/link.c
index 0d8fdc8..f0cf768 100644 (file)
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -50,6 +50,7 @@
  */
 static const char *link_co_err = "Link tunneling error, ";
 static const char *link_rst_msg = "Resetting link ";
+static const char tipc_bclink_name[] = "broadcast-link";
 
 static const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = {
        [TIPC_NLA_LINK_UNSPEC]          = { .type = NLA_UNSPEC },
@@ -231,6 +232,34 @@ bool tipc_link_create(struct tipc_node *n, char *if_name, int bearer_id,
        return true;
 }
 
+/**
+ * tipc_link_bc_create - create new link to be used for broadcast
+ * @n: pointer to associated node
+ * @mtu: mtu to be used
+ * @window: send window to be used
+ * @inputq: queue to put messages ready for delivery
+ * @namedq: queue to put binding table update messages ready for delivery
+ * @link: return value, pointer to put the created link
+ *
+ * Returns true if link was created, otherwise false
+ */
+bool tipc_link_bc_create(struct tipc_node *n, int mtu, int window,
+                        struct sk_buff_head *inputq,
+                        struct sk_buff_head *namedq,
+                        struct tipc_link **link)
+{
+       struct tipc_link *l;
+
+       if (!tipc_link_create(n, "", MAX_BEARERS, 0, 'Z', mtu, 0, window,
+                             0, 0, 0, NULL, inputq, namedq, link))
+               return false;
+
+       l = *link;
+       strcpy(l->name, tipc_bclink_name);
+       tipc_link_reset(l);
+       return true;
+}
+
 /* tipc_link_build_bcast_sync_msg() - synchronize broadcast link endpoints.
  *
  * Give a newly added peer node the sequence number where it should