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Paolo Abeni 6f21c96a78 ipv6: enforce flowi6_oif usage in ip6_dst_lookup_tail() 
The current implementation of ip6_dst_lookup_tail basically
ignore the egress ifindex match: if the saddr is set,
ip6_route_output() purposefully ignores flowi6_oif, due
to the commit d46a9d678e ("net: ipv6: Dont add RT6_LOOKUP_F_IFACE
flag if saddr set"), if the saddr is 'any' the first route lookup
in ip6_dst_lookup_tail fails, but upon failure a second lookup will
be performed with saddr set, thus ignoring the ifindex constraint.

This commit adds an output route lookup function variant, which
allows the caller to specify lookup flags, and modify
ip6_dst_lookup_tail() to enforce the ifindex match on the second
lookup via said helper.

ip6_route_output() becames now a static inline function build on
top of ip6_route_output_flags(); as a side effect, out-of-tree
modules need now a GPL license to access the output route lookup
functionality.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-29 20:31:26 -08:00
..
acpi Merge branches 'acpi-scan', 'acpi-bus', 'acpi-osl' and 'acpi-pm' 2016-01-12 01:10:03 +01:00
asm-generic virtio: barrier rework+fixes 2016-01-18 16:44:24 -08:00
clocksource arm64: KVM: Implement timer save/restore 2015-12-14 11:30:39 +00:00
crypto Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2016-01-17 19:13:15 -08:00
drm Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-01-18 07:01:16 +10:00
dt-bindings The clk framework and driver changes for 4.5 look pretty typical. The 2016-01-15 18:21:28 -08:00
keys Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity into next 2015-12-26 16:06:53 +11:00
kvm KVM: arm/arm64: vgic-v3: Make the LR indexing macro public 2015-12-14 11:30:38 +00:00
linux net: simplify napi_synchronize() to avoid warnings 2016-01-24 22:19:55 -08:00
math-emu
media [media] media-entitiy: add a function to create multiple links 2016-01-11 12:19:26 -02:00
memory
misc
net ipv6: enforce flowi6_oif usage in ip6_dst_lookup_tail() 2016-01-29 20:31:26 -08:00
pcmcia
ras
rdma
rxrpc
scsi Merge branch 'jejb-scsi' into misc 2016-01-07 15:51:13 -08:00
soc QE: Move QE from arch/powerpc to drivers/soc 2015-12-22 17:12:56 -06:00
sound ALSA: hda_intel: add card number to irq description 2016-01-12 21:05:16 +01:00
target
trace Merge branch 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2016-01-18 12:44:40 -08:00
uapi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2016-01-17 19:13:15 -08:00
video omapdss: remove CONFIG_OMAP2_DSS_VENC from omapdss.h 2015-12-29 11:07:46 +02:00
xen virtio: barrier rework+fixes 2016-01-18 16:44:24 -08:00
Kbuild