jamal wrote:
On Fri, 2005-29-04 at 16:30 -0700, Ben Greear wrote:
I am curious if there is any interest in adding a hook in the netif_receive_skb
method to allow receiving (and consuming) pktgen packets. This gives the
ability
to get some good packet receive & latency stats using pktgen.
I asked this a year or so ago and was told no, but since then the netpoll and
TC_NCLS hooks have been added.... so maybe hooks are OK again?
Write an action. It should be trivial to consume pktgen. Infact if all
you wanted was to count, use the gact action.
I want a lot more than count, including timestamp, sequence number, etc.
In order to know it's a pktgen packet, I check for a magic value at the
beginning
of the UDP header. Since this could potentially collide with some 'real'
packet,
I also check a flag to see if the net_device has a particular flag set
indicating
it is actively accepting pktgen packets...
I assume this means I'd need a custom match function in the kernel. Is there
an example of how to do something like this using your framework?
Thanks,
Ben
cheers,
jamal
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
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