tipc: Fix problem with bundled multicast message

Set the destination node and destination port fields of an outgoing
multicast message header to zero; this is necessary to ensure that
the receiving node can route the message properly if it was packed
into a bundle due to link congestion. (Previously, there was a chance
that the receiving node would send the unbundled message to a random
node & port, rather than processing the message itself.)

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

diff --git a/net/tipc/port.c b/net/tipc/port.c
index c2229c4b18ef90210b9f8eb5c983fe238b5d383d..ac64037514f3230d3ad04b56a7b90f96ec723121 100644 (file)
--- a/net/tipc/port.c
+++ b/net/tipc/port.c
@@ -92,6 +92,8 @@ int tipc_multicast(u32 ref, struct tipc_name_seq const *seq,
        hdr = &oport->phdr;
        msg_set_type(hdr, TIPC_MCAST_MSG);
        msg_set_lookup_scope(hdr, TIPC_CLUSTER_SCOPE);
+       msg_set_destport(hdr, 0);
+       msg_set_destnode(hdr, 0);
        msg_set_nametype(hdr, seq->type);
        msg_set_namelower(hdr, seq->lower);
        msg_set_nameupper(hdr, seq->upper);