Eric Dumazet d4b812dea4 vlan: mask vlan prio bits ... In commit 48cc32d38a ("vlan: don't deliver frames for unknown vlans to protocols") Florian made sure we set pkt_type to PACKET_OTHERHOST if the vlan id is set and we could find a vlan device for this particular id. But we also have a problem if prio bits are set. Steinar reported an issue on a router receiving IPv6 frames with a vlan tag of 4000 (id 0, prio 2), and tunneled into a sit device, because skb->vlan_tci is set. Forwarded frame is completely corrupted : We can see (8100:4000) being inserted in the middle of IPv6 source address : 16:48:00.780413 IP6 2001:16d8:8100:4000:ee1c:0:9d9:bc87 > 9f94:4d95:2001:67c:29f4::: ICMP6, unknown icmp6 type (0), length 64 0x0000: 0000 0029 8000 c7c3 7103 0001 a0ae e651 0x0010: 0000 0000 ccce 0b00 0000 0000 1011 1213 0x0020: 1415 1617 1819 1a1b 1c1d 1e1f 2021 2223 0x0030: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 It seems we are not really ready to properly cope with this right now. We can probably do better in future kernels : vlan_get_ingress_priority() should be a netdev property instead of a per vlan_dev one. For stable kernels, lets clear vlan_tci to fix the bugs. Reported-by: Steinar H. Gunderson <sesse@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2013-07-18 13:05:23 -07:00
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Kconfig	net: vlan: add 802.1ad support	2013-04-19 14:46:06 -04:00
Makefile	net/8021q: Implement Multiple VLAN Registration Protocol (MVRP)	2013-02-10 20:37:22 -05:00
vlan.c	net: pass info struct via netdevice notifier	2013-05-28 13:11:01 -07:00
vlan.h	net: vlan: fix up vlan_proto_idx() for CONFIG_BUG=n	2013-04-21 15:58:19 -04:00
vlan_core.c	vlan: mask vlan prio bits	2013-07-18 13:05:23 -07:00
vlan_dev.c	net: vlan,ethtool: netdev_features_t is more than 32 bit	2013-05-02 13:58:12 -04:00
vlan_gvrp.c	net: vlan: prepare for 802.1ad support	2013-04-19 14:45:27 -04:00
vlan_mvrp.c	net: vlan: prepare for 802.1ad support	2013-04-19 14:45:27 -04:00
vlan_netlink.c	net: vlan: add 802.1ad support	2013-04-19 14:46:06 -04:00
vlanproc.c	proc: Supply a function to remove a proc entry by PDE	2013-05-01 17:29:46 -04:00
vlanproc.h	[VLAN]: Add a net argument to proc init and cleanup calls.	2008-04-16 00:51:12 -07:00