Mahesh Bandewar 17c8c59988 ipvlan: add L2 check for packets arriving via virtual devices ... [ Upstream commit 92ff426450 ] Packets that don't have dest mac as the mac of the master device should not be entertained by the IPvlan rx-handler. This is mostly true as the packet path mostly takes care of that, except when the master device is a virtual device. As demonstrated in the following case - ip netns add ns1 ip link add ve1 type veth peer name ve2 ip link add link ve2 name iv1 type ipvlan mode l2 ip link set dev iv1 netns ns1 ip link set ve1 up ip link set ve2 up ip -n ns1 link set iv1 up ip addr add 192.168.10.1/24 dev ve1 ip -n ns1 addr 192.168.10.2/24 dev iv1 ping -c2 192.168.10.2 <Works!> ip neigh show dev ve1 ip neigh show 192.168.10.2 lladdr <random> dev ve1 ping -c2 192.168.10.2 <Still works! Wrong!!> This patch adds that missing check in the IPvlan rx-handler. Reported-by: Amit Sikka <amit.sikka@ericsson.com> Signed-off-by: Mahesh Bandewar <maheshb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-03-19 08:42:56 +01:00
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ipvlan.h	net: add netlink_ext_ack argument to rtnl_link_ops.newlink	2017-06-26 23:13:21 -04:00
ipvlan_core.c	ipvlan: add L2 check for packets arriving via virtual devices	2018-03-19 08:42:56 +01:00
ipvlan_main.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next	2017-09-03 17:08:42 -07:00
ipvtap.c	tap: reference to KVA of an unloaded module causes kernel panic	2017-10-28 19:17:21 +09:00
Makefile	ipvtap: IP-VLAN based tap driver	2017-02-11 20:59:41 -05:00