tipc: Add routines for safe checking of node's network address

Introduces routines that test whether a given network address is
equal to a node's own network address or if it lies within the node's
own network cluster, and which work properly regardless of whether
the node is using the default network address <0.0.0> or a non-zero
network address that is assigned later on. In essence, these routines
ensure that address <0.0.0> is treated as an alias for "this node",
regardless of which network address the node is actually using.

Old users of the pre-existing more strict match in_own_cluster()
have been accordingly redirected to what is now called
in_own_cluster_exact() --- which does not extend matching to <0,0,0>.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 5dfd89c40429..0bfdeba91d51 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -449,7 +449,7 @@ int tipc_enable_bearer(const char *name, u32 disc_domain, u32 priority)
                 if (tipc_in_scope(disc_domain, tipc_own_addr)) {
                         disc_domain = tipc_own_addr & TIPC_CLUSTER_MASK;
                         res = 0;   /* accept any node in own cluster */
-                } else if (in_own_cluster(disc_domain))
+                } else if (in_own_cluster_exact(disc_domain))
                         res = 0;   /* accept specified node in own cluster */
         }
         if (res) {