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tipc: Fix bug in scope checking for multicast messages

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This patch ensures that TIPC's multicast message name lookup
algorithm does individualized scope checking for each published
name it examines.  Previously, scope checking was only done for
the first name in a name table publication list, which could
result in incoming multicast messages being delivered to ports
publishing names with "node" scope, or not being delivered to
ports publishing names with "cluster" or "zone" scope.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Allan Stephens 2008-07-14 22:44:32 -07:00 committed by David S. Miller
parent 0e35fd5e52
commit 08d2cf0f74
1 changed files with 4 additions and 2 deletions
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6
net/tipc/name_table.c
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@ -710,9 +710,11 @@ int tipc_nametbl_mc_translate(u32 type, u32 lower, u32 upper, u32 limit,
if (sseq->lower > upper)
break;
publ = sseq->cluster_list;
if (publ && (publ->scope <= limit))
if (publ)
do {
if (publ->node == tipc_own_addr)
if (publ->scope > limit)
/* ignore out-of-scope publication */ ;
else if (publ->node == tipc_own_addr)
tipc_port_list_add(dports, publ->ref);
else
res = 1;