I've completed the first pass of my changes to pktgen in 2.6.18.
Many of these features are probably DOA based on previous conversations,
but perhaps this will help someone....
Changes:
* use a nano-second timer based on the scheduler timer (TSC) for relative
times, instead of get_time_of_day.
* Don't busy-spin:
* add hook to netdevice wake tx queue to re-start when queue was stopped.
* add logic to pktgen to register/unregister this hook.
* accumulate delay and sleep interruptible on a queue when 1ms of sleep has
accumulated
or when the associated netdev tx-queues for pktgen devices needing to
transmit are asleep.
(This all assumes that HZ is 1000, could probably work with other HZ with
minor work.)
* Add receive logic to dev.c so that pktgen can receive packets and report on
various stats
including latency, packet loss, jitter, etc.
* Remove the if-lock, primarily by making the 'add-interface' logic deferred to
the
thread's main loop. It's likely I missed a corner case or two here,
hopefully I'll
find them all in testing...
* Add ioctl to grab all of the pktgen stats in one call.
The pktgen.[ch] patch is here: http://www.candelatech.com/oss/pktgen.patch
The full patch, including the callback hooks (and several other features)
is located here: http://www.candelatech.com/oss/candela_2.6.18.patch
Thanks,
Ben
--
Ben Greear <[EMAIL PROTECTED]>
Candela Technologies Inc http://www.candelatech.com
-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
