diff options
| author | JP Abgrall <jpa@google.com> | 2011-06-20 12:41:46 -0700 |
|---|---|---|
| committer | Praneeth Bajjuri <praneeth@ti.com> | 2011-09-20 14:36:22 -0700 |
| commit | 43cd9abe3fcece49b9c02a0b1c0413dc3a8dee78 (patch) | |
| tree | 7ff5a878d40f96c988204f5e795c7bdf38063d22 /include/linux | |
| parent | f9913696110f3ab9ad27f4b4ef92593d4772ce31 (diff) | |
netfilter: add xt_qtaguid matching module
This module allows tracking stats at the socket level for given UIDs.
It replaces xt_owner.
If the --uid-owner is not specified, it will just count stats based on
who the skb belongs to. This will even happen on incoming skbs as it
looks into the skb via xt_socket magic to see who owns it.
If an skb is lost, it will be assigned to uid=0.
To control what sockets of what UIDs are tagged by what, one uses:
echo t $sock_fd $accounting_tag $the_billed_uid \
> /proc/net/xt_qtaguid/ctrl
So whenever an skb belongs to a sock_fd, it will be accounted against
$the_billed_uid
and matching stats will show up under the uid with the given
$accounting_tag.
Because the number of allocations for the stats structs is not that big:
~500 apps * 32 per app
we'll just do it atomic. This avoids walking lists many times, and
the fancy worker thread handling. Slabs will grow when needed later.
It use netdevice and inetaddr notifications instead of hooks in the core dev
code to track when a device comes and goes. This removes the need for
exposed iface_stat.h.
Put procfs dirs in /proc/net/xt_qtaguid/
ctrl
stats
iface_stat/<iface>/...
The uid stats are obtainable in ./stats.
Change-Id: I01af4fd91c8de651668d3decb76d9bdc1e343919
Signed-off-by: JP Abgrall <jpa@google.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/netfilter/xt_qtaguid.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/netfilter/xt_qtaguid.h b/include/linux/netfilter/xt_qtaguid.h new file mode 100644 index 00000000000..ca60fbdec2f --- /dev/null +++ b/include/linux/netfilter/xt_qtaguid.h @@ -0,0 +1,13 @@ +#ifndef _XT_QTAGUID_MATCH_H +#define _XT_QTAGUID_MATCH_H + +/* For now we just replace the xt_owner. + * FIXME: make iptables aware of qtaguid. */ +#include <linux/netfilter/xt_owner.h> + +#define XT_QTAGUID_UID XT_OWNER_UID +#define XT_QTAGUID_GID XT_OWNER_GID +#define XT_QTAGUID_SOCKET XT_OWNER_SOCKET +#define xt_qtaguid_match_info xt_owner_match_info + +#endif /* _XT_QTAGUID_MATCH_H */ |