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SubjectRe: tc match MAC destination
On Wed, 15 Jun 2011 11:12:01 +0300
Andrei Popa <ierdnah@gmail.com> wrote:

> Hello,
>
> I want to shape PVSTP+ traffic (traffic that has MAC destination
> 01:00:0c:cc:cc:cd) and it doesn't work.
> I've tried
> filter parent 1: protocol 802_3 pref 2 u32 fh 802::11 order 17 key ht
> 802 bkt 0 flowid 1:3
> match 01000ccc/ffffffff at 0
> but it doesn't work.
>
> With
> filter parent 1: protocol arp pref 1 u32
> filter parent 1: protocol arp pref 1 u32 fh 801: ht divisor 1
> filter parent 1: protocol arp pref 1 u32 fh 801::7 order 7 key ht 801
> bkt 0 flowid 1:3
> match 00000000/00000000 at 0
> filter parent 1: protocol 802_3 pref 2 u32
> filter parent 1: protocol 802_3 pref 2 u32 fh 802: ht divisor 1
> filter parent 1: protocol 802_3 pref 2 u32 fh 802::3 order 3 key ht 802
> bkt 0 flowid 1:3
> match 00000000/00000000 at 0
> action order 1: mirred (Egress Mirror to device ifb1) pipe
> index 1923 ref 1 bind 1
>
> I see arp trafic with tcpdump on ifb1, but no STP traffic or any kind of
> traffic except arp, because I've matched all MAC addreses.
> Can somebody verify that this match works ?
>
> I use kernel 2.6.39.1.
>
> Thank you,

If you use current iproute tools it is possible to use:
tc filter ... match ether dst 01:00:0c:cc:cc:cd

which generates the necessary offset.


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