maintaining per rule counters

maintaining per rule counters

[Padraig]

Hi I'm afraid I can't subscribe to the mailing list at present?

Anyway I have a fairly simple requirement to maintain per
rule packet & byte counts that are timestamped and sent
to userspace every 1ms (packet clocked).

My question is where is the best place to store the 1ms of counters.
Can I create a target module and put the data in the *targinfo
I.E. is targinfo global to the target module or per rule.
The ideal would be if it was dynamically allocated per rule and
was just big enough for my counters+timestamp. What determines
the size?

cheers,
Pádraig.

Re: maintaining per rule counters

[Harald Welte]

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On Thu, Apr 10, 2003 at 04:02:42PM +0100, Padraig@Linux.ie wrote:
> Hi I'm afraid I can't subscribe to the mailing list at present?
> 
> Anyway I have a fairly simple requirement to maintain per
> rule packet & byte counts that are timestamped and sent
> to userspace every 1ms (packet clocked).
> 
> My question is where is the best place to store the 1ms of counters.
> Can I create a target module and put the data in the *targinfo
> I.E. is targinfo global to the target module or per rule.

it is per rule.  if you want something global, you need to dynamically
allocate some private memory at module load time (or rule load time).

> The ideal would be if it was dynamically allocated per rule and
> was just big enough for my counters+timestamp. What determines
> the size?

it is not dynamically allocated per rule, but once allocated per rule in
which it is used.

> cheers,
> Pádraig.

-- 
- Harald Welte <laforge@netfilter.org>             http://www.netfilter.org/
============================================================================
  "Fragmentation is like classful addressing -- an interesting early
   architectural error that shows how much experimentation was going
   on while IP was being designed."                    -- Paul Vixie

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