netfilter: xt_qtaguid: start tracking iface rx/tx at low level
authorJP Abgrall <jpa@google.com>
Fri, 27 Apr 2012 19:57:39 +0000 (12:57 -0700)
committerVarun Wadekar <vwadekar@nvidia.com>
Wed, 18 Jul 2012 06:03:29 +0000 (11:03 +0530)
commit41a3636cb85cca9c6c896a850b299f84704100f2
tree6c1c4c9c9b743b67394e388e7262957d2bbf9f04
parent6ad64b2a3378686d63b08ff3ae5a03d0de6d5231
netfilter: xt_qtaguid: start tracking iface rx/tx at low level

qtaguid tracks the device stats by monitoring when it goes up and down,
then it gets the dev_stats().
But devs don't correctly report stats (either they don't count headers
symmetrically between rx/tx, or they count internal control messages).

Now qtaguid counts the rx/tx bytes/packets during raw:prerouting and
mangle:postrouting (nat is not available in ipv6).

The results are in
  /proc/net/xt_qtaguid/iface_stat_fmt
which outputs a format line (bash expansion):
  ifname  total_skb_{rx,tx}_{bytes,packets}

Added event counters for pre/post handling.
Added extra ctrl_*() pid/uid debugging.

Change-Id: Id84345d544ad1dd5f63e3842cab229e71d339297
Signed-off-by: JP Abgrall <jpa@google.com>
net/netfilter/xt_qtaguid.c
net/netfilter/xt_qtaguid_internal.h
net/netfilter/xt_qtaguid_print.c