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, 3 insertions, 3 deletions

diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index 5d7004262647..1e0518da19da 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -342,7 +342,7 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
         list_add(&publ->zone_list, &info->zone_list);
         info->zone_list_size++;
 
-        if (in_own_cluster(node)) {
+        if (in_own_cluster_exact(node)) {
                 list_add(&publ->cluster_list, &info->cluster_list);
                 info->cluster_list_size++;
         }
@@ -411,7 +411,7 @@ found:
 
         /* Remove publication from cluster scope list, if present */
 
-        if (in_own_cluster(node)) {
+        if (in_own_cluster_exact(node)) {
                 list_del(&publ->cluster_list);
                 info->cluster_list_size--;
         }
@@ -604,7 +604,7 @@ u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *destnode)
                 publ = list_first_entry(&info->node_list, struct publication,
                                         node_list);
                 list_move_tail(&publ->node_list, &info->node_list);
-        } else if (in_own_cluster(*destnode)) {
+        } else if (in_own_cluster_exact(*destnode)) {
                 if (list_empty(&info->cluster_list))
                         goto no_match;
                 publ = list_first_entry(&info->cluster_list, struct publication,