* NF fields in sk_buff
@ 2004-01-30 15:45 Emmanuel Guiton
2004-02-04 13:50 ` Pablo Neira
0 siblings, 1 reply; 2+ messages in thread
From: Emmanuel Guiton @ 2004-01-30 15:45 UTC (permalink / raw)
To: netfilter-devel
Hi!
I want to send a "built-by-hand" packet on the local hook. In the
sk_buff structure, there is two fields, nfmark and nfcache, which I
don't really understand. Can someone give me a quick briefing on these
two fields?
Quick search with google made me feel that I don't need them anyway and
that I can leave them blank. Right?
Bye,
Emmanuel
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: NF fields in sk_buff
2004-01-30 15:45 NF fields in sk_buff Emmanuel Guiton
@ 2004-02-04 13:50 ` Pablo Neira
0 siblings, 0 replies; 2+ messages in thread
From: Pablo Neira @ 2004-02-04 13:50 UTC (permalink / raw)
To: emmanuel, netfilter-devel
Hi emmanuel,
Emmanuel Guiton wrote:
> Hi!
>
> I want to send a "built-by-hand" packet on the local hook. In the
> sk_buff structure, there is two fields, nfmark and nfcache, which I
> don't really understand. Can someone give me a quick briefing on these
> two fields?
> Quick search with google made me feel that I don't need them anyway
> and that I can leave them blank. Right?
I know something about nfcache, I think that it's a Rusty's idea to
improve the performance and avoid that a packet hits all the hooks but
it wasn't implemented. See netfilter hacking how-to. section 4.5.
I think that you are right, you could leave them blank.
Pablo
^ permalink raw reply [flat|nested] 2+ messages in thread
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