linux/include
Eyal Birger 744d5a3e9f net: move skb->dropcount to skb->cb[]
Commit 977750076d ("af_packet: add interframe drop cmsg (v6)")
unionized skb->mark and skb->dropcount in order to allow recording
of the socket drop count while maintaining struct sk_buff size.

skb->dropcount was introduced since there was no available room
in skb->cb[] in packet sockets. However, its introduction led to
the inability to export skb->mark, or any other aliased field to
userspace if so desired.

Moving the dropcount metric to skb->cb[] eliminates this problem
at the expense of 4 bytes less in skb->cb[] for protocol families
using it.

Signed-off-by: Eyal Birger <eyal.birger@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-02 00:19:30 -05:00
..
acpi kernel.h: remove ancient __FUNCTION__ hack 2015-02-12 18:54:13 -08:00
asm-generic kernel: add support for .init_array.* constructors 2015-02-13 21:21:42 -08:00
clocksource
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2015-02-14 09:47:01 -08:00
drm
dt-bindings ARM: SoC driver updates 2015-02-17 09:38:59 -08:00
keys
kvm
linux net: move skb->dropcount to skb->cb[] 2015-03-02 00:19:30 -05:00
math-emu
media
memory
misc
net net: move skb->dropcount to skb->cb[] 2015-03-02 00:19:30 -05:00
pcmcia
ras
rdma
rxrpc
scsi Merge branch 'for-3.20/core' of git://git.kernel.dk/linux-block 2015-02-12 14:13:23 -08:00
soc
sound
target
trace Merge branch 'lazytime' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-02-17 16:12:34 -08:00
uapi cls_bpf: add initial eBPF support for programmable classifiers 2015-03-01 14:05:19 -05:00
video Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-02-16 15:48:00 -08:00
xen
Kbuild