net: ipv6: Fix UDP early demux lookup with udp_l3mdev_accept=0
authorsubashab@codeaurora.org <subashab@codeaurora.org>
Tue, 18 Apr 2017 17:39:41 +0000 (11:39 -0600)
committerDavid S. Miller <davem@davemloft.net>
Thu, 20 Apr 2017 19:50:27 +0000 (15:50 -0400)
commit0bd84065b19bca12f07f288c8ea470e2c1b2de7a
tree61d18a576598f539be7cb331caa46dabd8caf349
parent8ad0921b8a526f64a2bdf7fe17b82dd2db84f152
net: ipv6: Fix UDP early demux lookup with udp_l3mdev_accept=0

David Ahern reported that 5425077d73e0c ("net: ipv6: Add early demux
handler for UDP unicast") breaks udp_l3mdev_accept=0 since early
demux for IPv6 UDP was doing a generic socket lookup which does not
require an exact match. Fix this by making UDPv6 early demux match
connected sockets only.

v1->v2: Take reference to socket after match as suggested by Eric
v2->v3: Add comment before break

Fixes: 5425077d73e0c ("net: ipv6: Add early demux handler for UDP unicast")
Reported-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Cc: Eric Dumazet <edumazet@google.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Tested-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv6/udp.c