Vlad Yasevich 35d2f80b07 vlan: Fix tcp checksum offloads in Q-in-Q vlans ... It appears that TCP checksum offloading has been broken for Q-in-Q vlans. The behavior was execerbated by the series commit afb0bc972b ("Merge branch 'stacked_vlan_tso'") that that enabled accleleration features on stacked vlans. However, event without that series, it is possible to trigger this issue. It just requires a lot more specialized configuration. The root cause is the interaction between how netdev_intersect_features() works, the features actually set on the vlan devices and HW having the ability to run checksum with longer headers. The issue starts when netdev_interesect_features() replaces NETIF_F_HW_CSUM with a combination of NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM, if the HW advertises IP|IPV6 specific checksums. This happens for tagged and multi-tagged packets. However, HW that enables IP|IPV6 checksum offloading doesn't gurantee that packets with arbitrarily long headers can be checksummed. This patch disables IP|IPV6 checksums on the packet for multi-tagged packets. CC: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> CC: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Acked-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-05-24 16:27:14 -04:00
..
acpi	More ACPI updates for v4.12-rc1	2017-05-10 09:35:42 -07:00
asm-generic	Kbuild UAPI header export updates for v4.12	2017-05-10 20:45:36 -07:00
clocksource
crypto	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2017-05-03 08:50:52 -07:00
drm	mm, vmalloc: use __GFP_HIGHMEM implicitly	2017-05-08 17:15:13 -07:00
dt-bindings	Sort of on the quieter side this time, which is probably due more	2017-05-10 13:38:18 -07:00
keys
kvm	KVM: arm/arm64: Fix bug when registering redist iodevs	2017-05-18 11:18:12 +02:00
linux	vlan: Fix tcp checksum offloads in Q-in-Q vlans	2017-05-24 16:27:14 -04:00
math-emu
media
memory
misc
net	mlx5-fixes-2017-05-23	2017-05-24 15:43:57 -04:00
pcmcia
ras
rdma	smc_diag.h: fix include from userland	2017-05-11 00:18:39 +09:00
rxrpc
scsi	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2017-05-12 11:44:13 -07:00
soc	powerpc updates for 4.12 part 2	2017-05-12 10:04:09 -07:00
sound	ASoC: Updates for v4.12	2017-05-02 08:25:25 +02:00
target	target/user: PGR Support	2017-05-01 22:21:45 -07:00
trace	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2017-05-12 11:58:45 -07:00
uapi	USB fixes for 4.12-rc2	2017-05-20 08:52:34 -07:00
video	uapi: export all headers under uapi directories	2017-05-11 00:21:54 +09:00
xen	xen: Implement EFI reset_system callback	2017-05-02 12:06:50 +02:00