Re: question on fwmark speed boost

Linux Advanced Routing and Traffic Control

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Wolfgang Hennerbichler wrote:
Follow-Up: This is the only pice of information I have found on my problem:

http://marc.info/?l=lartc&m=105421129231583&w=2

==> You can reduce the number of fw filters rules if you use the mark as
hash key.
So if you add
tc filter add dev eth0 parent 1:0 protocol ip handle 1 fw
and you have a packet with mark 39, it will placed in class 1:39.

I've never tried that, if it does work maybe you need to use 0x39 for the mark as classes are in hex.

iptables can do this

-j CLASSIFY --set-class 1:39

If you have a lot of marks and a complicated set up you could consider the u32 mark match which will let you use masks and I guess explicitly set up hashing - again be sure to work in hex.


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