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authorJon Paul Maloy <jon.maloy@ericsson.com>2016-08-16 11:53:50 -0400
committerDavid S. Miller <davem@davemloft.net>2016-08-18 21:14:36 -0700
commit0d051bf93c0640483788db56dfc118d307f8893b (patch)
tree360722c2eae3e17cb4801e1dc8f14aeb91437284 /net/tipc/udp_media.c
parent37bd91d1d9a9a3ab5e8f7efedadc4ced5d2d0a3a (diff)
tipc: make bearer packet filtering generic
In commit 5b7066c3dd24 ("tipc: stricter filtering of packets in bearer layer") we introduced a method of filtering out messages while a bearer is being reset, to avoid that links may be re-created and come back in working state while we are still in the process of shutting them down. This solution works well, but is limited to only work with L2 media, which is insufficient with the increasing use of UDP as carrier media. We now replace this solution with a more generic one, by introducing a new flag "up" in the generic struct tipc_bearer. This field will be set and reset at the same locations as with the previous solution, while the packet filtering is moved to the generic code for the sending side. On the receiving side, the filtering is still done in media specific code, but now including the UDP bearer. Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/udp_media.c')
-rw-r--r--net/tipc/udp_media.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index b016c011970b..33bdf5449a5e 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -224,7 +224,7 @@ static int tipc_udp_recv(struct sock *sk, struct sk_buff *skb)
rcu_read_lock();
b = rcu_dereference_rtnl(ub->bearer);
- if (b) {
+ if (b && test_bit(0, &b->up)) {
tipc_rcv(sock_net(sk), skb, b);
rcu_read_unlock();
return 0;