Eric Dumazet 447167bf56 udp: intoduce udp_encap_needed static_key ...

Most machines dont use UDP encapsulation (L2TP)

Adds a static_key so that udp_queue_rcv_skb() doesnt have to perform a
test if L2TP never setup the encap_rcv on a socket.

Idea of this patch came after Simon Horman proposal to add a hook on TCP
as well.

If static_key is not yet enabled, the fast path does a single JMP .

When static_key is enabled, JMP destination is patched to reach the real
encap_type/encap_rcv logic, possibly adding cache misses.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: dev@openvswitch.org
Signed-off-by: David S. Miller <davem@davemloft.net>

2012-04-13 13:39:37 -04:00

..

acpi

Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux

2012-03-30 16:45:39 -07:00

asm-generic

asm-generic: add linux/types.h to cmpxchg.h

2012-04-02 14:41:27 -07:00

crypto

crypto: user - Fix lookup of algorithms with IV generator

2012-03-29 19:52:47 +08:00

drm

Merge branch 'exynos-drm-fixes' of git://git.infradead.org/users/kmpark/linux-samsung into drm-intel-fixes

2012-04-12 17:42:01 +01:00

keys

…

linux

Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next

2012-04-12 20:12:31 -04:00

math-emu

…

media

Merge tag 'device-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2012-03-24 10:41:37 -07:00

misc

…

mtd

…

net

udp: intoduce udp_encap_needed static_key

2012-04-13 13:39:37 -04:00

pcmcia

…

rdma

Merge branches 'cma', 'cxgb3', 'cxgb4', 'ehca', 'iser', 'mad', 'nes', 'qib', 'srp' and 'srpt' into for-next

2012-03-19 09:50:33 -07:00

rxrpc

…

scsi

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

2012-03-31 13:31:23 -07:00

sound

ALSA: hda - hide HDMI/ELD printks unless snd.debug=2

2012-04-10 14:53:55 +02:00

target

target: Use array_zalloc for device_list

2012-03-15 19:15:51 -07:00

trace

Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-04-04 10:04:42 -07:00

video

Merge branch 'platforms' of git://git.linaro.org/people/rmk/linux-arm

2012-03-27 18:17:02 -07:00

xen

Merge branch 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping

2012-04-04 17:13:43 -07:00

Kbuild

…