* NFTables Internals
@ 2016-10-27 15:56 mark diener
2016-10-27 16:29 ` Florian Westphal
0 siblings, 1 reply; 2+ messages in thread
From: mark diener @ 2016-10-27 15:56 UTC (permalink / raw)
To: netfilter-devel
Thanks for all the responses about the internals of NFTables
The best starter document was this:
https://workshop.netfilter.org/2016/wiki/images/7/78/Nft-tutorial.pdf
Now I just need to figure out how to interpet the "payload load 4b @
network_header + 12" nomenclature to really get a handle on things.
Any more documents or videos to understand the internals?
(Instead of hours spent looking at source code!)
Thanks,
md
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: NFTables Internals
2016-10-27 15:56 NFTables Internals mark diener
@ 2016-10-27 16:29 ` Florian Westphal
0 siblings, 0 replies; 2+ messages in thread
From: Florian Westphal @ 2016-10-27 16:29 UTC (permalink / raw)
To: mark diener; +Cc: netfilter-devel
mark diener <rpzrpzrpz@gmail.com> wrote:
> https://workshop.netfilter.org/2016/wiki/images/7/78/Nft-tutorial.pdf
>
> Now I just need to figure out how to interpet the "payload load 4b @
> network_header + 12" nomenclature to really get a handle on things.
It tells the payload expression to load 4 bytes, with offset 12,
realtive to network header (base).
> Any more documents or videos to understand the internals?
> (Instead of hours spent looking at source code!)
Whats your goal?
If you really want to learn the internal workings source code is indeed
best option.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2016-10-27 15:56 NFTables Internals mark diener
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