From: Allan Stephens Date: Tue, 15 Jul 2008 05:44:32 +0000 (-0700) Subject: tipc: Fix bug in scope checking for multicast messages X-Git-Tag: v2.6.27-rc1~969^2~135 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08d2cf0f74b3ee5e773bb906043a0efe96ded229;p=linux-2.6 tipc: Fix bug in scope checking for multicast messages 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 Signed-off-by: David S. Miller --- diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c index 096f7bd240..1e53b0c8e7 100644 --- a/net/tipc/name_table.c +++ b/net/tipc/name_table.c @@ -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;