ipv4: fix broadcast packets reception
authorPaolo Abeni <pabeni@redhat.com>
Tue, 22 Mar 2016 08:19:38 +0000 (09:19 +0100)
committerDavid S. Miller <davem@davemloft.net>
Tue, 22 Mar 2016 19:53:50 +0000 (15:53 -0400)
commitad0ea1989cc4d5905941d0a9e62c63ad6d859cef
tree3da2a55a9729b52a5e667bd2b4e0aa99c5d78d2f
parent0419f4a953f8e08faef3ec9f5dab1cf697a4d7e1
ipv4: fix broadcast packets reception

Currently, ingress ipv4 broadcast datagrams are dropped since,
in udp_v4_early_demux(), ip_check_mc_rcu() is invoked even on
bcast packets.

This patch addresses the issue, invoking ip_check_mc_rcu()
only for mcast packets.

Fixes: 6e5403093261 ("ipv4/udp: Verify multicast group is ours in upd_v4_early_demux()")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/udp.c