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David Ahern 9ff7438460 net: vrf: Handle ipv6 multicast and link-local addresses 
IPv6 multicast and link-local addresses require special handling by the
VRF driver:
1. Rather than using the VRF device index and full FIB lookups,
   packets to/from these addresses should use direct FIB lookups based on
   the VRF device table.

2. fail sends/receives on a VRF device to/from a multicast address
   (e.g, make ping6 ff02::1%<vrf> fail)

3. move the setting of the flow oif to the first dst lookup and revert
   the change in icmpv6_echo_reply made in ca254490c8 ("net: Add VRF
   support to IPv6 stack"). Linklocal/mcast addresses require use of the
   skb->dev.

With this change connections into and out of a VRF enslaved device work
for multicast and link-local addresses work (icmp, tcp, and udp)
e.g.,

1. packets into VM with VRF config:
    ping6 -c3 fe80::e0:f9ff:fe1c:b974%br1
    ping6 -c3 ff02::1%br1

    ssh -6 fe80::e0:f9ff:fe1c:b974%br1

2. packets going out a VRF enslaved device:
    ping6 -c3 fe80::18f8:83ff:fe4b:7a2e%eth1
    ping6 -c3 ff02::1%eth1
    ssh -6 root@fe80::18f8:83ff:fe4b:7a2e%eth1

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 12:34:34 -07:00
..
acpi Merge branches 'acpica-fixes', 'acpi-video' and 'acpi-processor' 2016-06-03 22:35:05 +02:00
asm-generic Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-05-25 17:11:43 -07:00
clocksource
crypto Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2016-05-19 09:21:36 -07:00
drm Merge tag 'drm-intel-next-fixes-2016-05-25' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-05-27 16:08:38 +10:00
dt-bindings Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2016-05-26 09:23:43 -07:00
keys
kvm KVM: arm/arm64: vgic-new: implement mapped IRQ handling 2016-05-20 15:40:09 +02:00
linux sched: remove NET_XMIT_POLICED 2016-06-12 22:02:11 -04:00
math-emu
media
memory
misc
net net: vrf: Handle ipv6 multicast and link-local addresses 2016-06-15 12:34:34 -07:00
pcmcia
ras
rdma IB/core: Make all casts in ib_device_cap_flags enum consistent 2016-06-07 09:50:55 -04:00
rxrpc
scsi
soc fsl/qe: Do not prefix header guard with CONFIG_ 2016-06-08 11:08:01 -07:00
sound ASoC: Updates for v4.7 2016-05-16 14:59:00 +02:00
target Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2016-05-28 12:04:17 -07:00
trace - move kvm_stat tool from QEMU repo into tools/kvm/kvm_stat 2016-05-27 13:41:54 -07:00
uapi For the next cycle, we have the following: 2016-06-10 23:13:32 -07:00
video imx-drm probing fix 2016-05-25 12:36:20 +10:00
xen
Kbuild