linux_old1/include
Timo Teräs 2ffae99d1f ipv4: use next hop exceptions also for input routes
Commit d2d68ba9 (ipv4: Cache input routes in fib_info nexthops)
assmued that "locally destined, and routed packets, never trigger
PMTU events or redirects that will be processed by us".

However, it seems that tunnel devices do trigger PMTU events in certain
cases. At least ip_gre, ip6_gre, sit, and ipip do use the inner flow's
skb_dst(skb)->ops->update_pmtu to propage mtu information from the
outer flows. These can cause the inner flow mtu to be decreased. If
next hop exceptions are not consulted for pmtu, IP fragmentation will
not be done properly for these routes.

It also seems that we really need to have the PMTU information always
for netfilter TCPMSS clamp-to-pmtu feature to work properly.

So for the time being, cache separate copies of input routes for
each next hop exception.

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Reviewed-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-28 21:27:47 -07:00
..
acpi ACPI / PM: Allow device power states to be used for CONFIG_PM unset 2013-05-22 00:19:28 +02:00
asm-generic Merge branch 'fixes' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2013-06-11 11:16:43 -07:00
clocksource ARM: late Exynos multiplatform changes 2013-05-07 11:28:42 -07:00
crypto crypto: sha512 - Expose generic sha512 routine to be callable from other modules 2013-04-25 21:00:57 +08:00
drm Merge branch 'drm-radeon-sun-hainan' of git://people.freedesktop.org/~airlied/linux 2013-05-21 08:50:57 -07:00
dt-bindings
keys
linux netlink: fix splat in skb_clone with large messages 2013-06-27 22:44:16 -07:00
math-emu
media Merge branch 'topic/omap3isp' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2013-05-01 09:57:04 -07:00
memory
misc
net ipv4: use next hop exceptions also for input routes 2013-06-28 21:27:47 -07:00
pcmcia
ras
rdma
rxrpc
scsi Merge branch 'postmerge' into for-linus 2013-05-10 07:54:01 -07:00
sound ASoC: dapm: Treat DAI widgets like AIF widgets for power 2013-06-07 15:54:50 +01:00
target target: Propigate up ->cmd_kref put return via transport_generic_free_cmd 2013-05-31 01:21:23 -07:00
trace Fixed regressions (two stability regressions and a performance 2013-05-14 09:30:54 -07:00
uapi Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2013-06-26 13:23:13 -07:00
video Merge branch 'fbdev-3.10-fixes' of git://gitorious.org/linux-omap-dss2/linux into linux-fbdev/for-3.10-fixes 2013-05-29 17:00:34 +08:00
xen Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-06-05 16:37:30 -07:00
Kbuild UAPI: remove empty Kbuild files 2013-04-30 17:04:09 -07:00