linux/net/bridge
Nikolay Aleksandrov 1515a63fc4 net: bridge: always clear mcast matching struct on reports and leaves
We need to be careful and always zero the whole br_ip struct when it is
used for matching since the rhashtable change. This patch fixes all the
places which didn't properly clear it which in turn might've caused
mismatches.

Thanks for the great bug report with reproducing steps and bisection.

Steps to reproduce (from the bug report):
ip link add br0 type bridge mcast_querier 1
ip link set br0 up

ip link add v2 type veth peer name v3
ip link set v2 master br0
ip link set v2 up
ip link set v3 up
ip addr add 3.0.0.2/24 dev v3

ip netns add test
ip link add v1 type veth peer name v1 netns test
ip link set v1 master br0
ip link set v1 up
ip -n test link set v1 up
ip -n test addr add 3.0.0.1/24 dev v1

# Multicast receiver
ip netns exec test socat
UDP4-RECVFROM:5588,ip-add-membership=224.224.224.224:3.0.0.1,fork -

# Multicast sender
echo hello | nc -u -s 3.0.0.2 224.224.224.224 5588

Reported-by: liam.mcbirnie@boeing.com
Fixes: 19e3a9c90c ("net: bridge: convert multicast to generic rhashtable")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-04 17:52:40 -07:00
..
netfilter netfilter: convert the proto argument from u8 to u16 2019-03-01 14:28:43 +01:00
br_arp_nd_proxy.c net: bridge: convert neigh_suppress_enabled option to a bit 2018-09-26 10:04:23 -07:00
br_device.c bridge: support for ndo_fdb_get 2018-12-16 14:42:34 -08:00
br_fdb.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-01-21 14:41:32 -08:00
br_forward.c net: bridge: Fix ethernet header pointer before check skb forwardable 2019-01-17 21:55:15 -08:00
br_if.c net: bridge: Issue NETDEV_PRE_CHANGEADDR 2018-12-13 18:41:38 -08:00
br_input.c net: bridge: add no_linklocal_learn bool option 2018-11-27 15:04:15 -08:00
br_ioctl.c net: bridge: add notifications for the bridge dev on vlan change 2017-11-02 15:53:40 +09:00
br_mdb.c net: switchdev: Add extack argument to switchdev_port_obj_add() 2018-12-12 16:34:21 -08:00
br_multicast.c net: bridge: always clear mcast matching struct on reports and leaves 2019-04-04 17:52:40 -07:00
br_netfilter_hooks.c netfilter: bridge: set skb transport_header before entering NF_INET_PRE_ROUTING 2019-03-18 16:21:54 +01:00
br_netfilter_ipv6.c netfilter: bridge: set skb transport_header before entering NF_INET_PRE_ROUTING 2019-03-18 16:21:54 +01:00
br_netlink_tunnel.c bridge: netlink: make setlink/dellink notifications more accurate 2017-10-29 11:03:43 +09:00
br_netlink.c net: bridge: remove unneeded variable 'err' 2018-12-18 15:50:13 -08:00
br_nf_core.c xfrm: Move dst->path into struct xfrm_dst 2017-11-30 09:54:26 -05:00
br_private_stp.h net: bridge: add helper to set topology change 2016-12-10 21:27:23 -05:00
br_private_tunnel.h bridge: netlink: make setlink/dellink notifications more accurate 2017-10-29 11:03:43 +09:00
br_private.h net: Add extack argument to ndo_fdb_add() 2019-01-17 15:18:47 -08:00
br_stp_bpdu.c net: introduce __skb_put_[zero, data, u8] 2017-06-20 13:30:14 -04:00
br_stp_if.c net: bridge: add notifications for the bridge dev on vlan change 2017-11-02 15:53:40 +09:00
br_stp_timer.c net: bridge: Convert timers to use timer_setup() 2017-11-03 15:42:49 +09:00
br_stp.c net: bridge: add notifications for the bridge dev on vlan change 2017-11-02 15:53:40 +09:00
br_switchdev.c net: switchdev: Replace port attr set SDO with a notification 2019-02-27 12:39:56 -08:00
br_sysfs_br.c net: bridge: mark hash_elasticity as obsolete 2018-12-05 17:01:51 -08:00
br_sysfs_if.c net: bridge: remove redundant checks for null p->dev and p->br 2018-11-25 10:25:43 -08:00
br_vlan_tunnel.c bridge: vlan_tunnel: explicitly reset metadata attrs to NULL on failure 2017-02-17 13:33:41 -05:00
br_vlan.c net: bridge: Fix VLANs memory leak 2019-01-08 16:53:54 -05:00
br.c net: bridge: Handle NETDEV_PRE_CHANGEADDR from ports 2018-12-13 18:41:38 -08:00
Kconfig docs: fix some broken documentation references 2018-09-20 11:09:53 -06:00
Makefile Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00