Thank you very much!!
I have just few other questions about U32 filter, I've searched desesperatly for
how to use this filter, and can't find anything. I mean, particularly concerning
the
'matching SELECTORS'( If someone has a list of that...). If you have any link or
information about that...
Does the value 46 correspond to an RSVP flag, in the selector???
Is there a way to detect packets content type (audio, video, ftp, http...) :
Is TOS bits using a good idea for that??? (If you could give me good links for
that...)
Is there a way in U32 filter to classify packets depending on the TOS bits
value??
Thx in advance for your help!!
Jeff Kann wrote:
> We were using the following line to add protection for RSVP signalling
> packets:
>
> # RSVP control packets
> $TC filter add dev $DEV parent 1:2 prio 1 protocol ip u32 \
> match ip protocol 46 ff
>
> In short, U32 filter might be what you wanted. If you want to use some
> other field, such as TCP/UDP port, consider the following example:
>
> # VAN control packets (port 8320 = 0x2080)
> $TC filter add dev $DEV parent 1:2 prio 1 protocol ip u32 \
> match tcp src 0x2080 0xffff match tcp dst 0x2080 0xffff
>
> Good luck,
> Jeff
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