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

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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>
This commit is contained in:
Allan Stephens
2012-04-17 18:02:01 -04:00
committed by Paul Gortmaker
parent fd6eced8a4
commit 336ebf5bf5
4 changed files with 24 additions and 6 deletions
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2
net/tipc/node.c
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@@ -72,7 +72,7 @@ struct tipc_node *tipc_node_find(u32 addr)
struct tipc_node *node;
struct hlist_node *pos;
if (unlikely(!in_own_cluster(addr)))
if (unlikely(!in_own_cluster_exact(addr)))
return NULL;
hlist_for_each_entry(node, pos, &node_htable[tipc_hashfn(addr)], hash) {