Subject: Re: [PATCH] iproute2: sch_rr support in tc

From: Patrick McHardy <[email-masked]>
Date: Thu, 28 Jun 2007 18:40:37 +0200

PJ Waskiewicz wrote:
> This patch applies on top of Patrick McHardy's RTNETLINK
> patches to add nested compat attributes.  This is needed to maintain
> ABI for sch_{rr|prio} in the kernel with respect to tc.  A new option,
> namely multiqueue, was added to sch_prio and sch_rr.  This will allow
> a user to turn multiqueue support on for sch_prio or sch_rr at loadtime.
> Also, tc qdisc ls will display whether or not multiqueue is enabled on
> that qdisc.  When in multiqueue mode, a user can specify a value of 0 for
> bands, and the number of bands will be created to match the number of
> queues on the device.
> 
> This patch is to support the new sch_rr (round-robin) qdisc being proposed
> in NET for multiqueue network device support in the Linux network stack.
> It uses q_prio.c as the template, since the qdiscs are nearly identical,
> outside of the ->dequeue() routine.
> 
> Signed-off-by: Peter P Waskiewicz Jr <[email-masked]>
> ---
> 
>  include/linux/pkt_sched.h |    9 +++
>  tc/Makefile               |    1 
>  tc/q_prio.c               |   24 +++++++--
>  tc/q_rr.c                 |  127 +++++++++++++++++++++++++++++++++++++++++++++

Since rr is not built as a module you could actually put everything
in q_prio and share the code. But I don't really care :)