netdev - Re: [Patch net-next] net_sched: add reverse binding for tc class

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Date:   Wed, 30 Aug 2017 23:48:40 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Cong Wang <xiyou.wangcong@...il.com>, netdev@...r.kernel.org
CC:     Jamal Hadi Salim <jhs@...atatu.com>
Subject: Re: [Patch net-next] net_sched: add reverse binding for tc class

On 08/30/2017 11:30 PM, Cong Wang wrote:
[...]
> Note, we still can NOT totally get rid of those class lookup in
> ->enqueue() because cgroup and flow filters have no way to determine
> the classid at setup time, they still have to go through dynamic lookup.
[...]
> ---
>   include/net/sch_generic.h |  1 +
>   net/sched/cls_basic.c     |  9 +++++++
>   net/sched/cls_bpf.c       |  9 +++++++

Same is for cls_bpf as well, so bind_class wouldn't work there
either as we could return dynamic classids. bind_class cannot
be added here, too.

>   net/sched/cls_flower.c    |  9 +++++++
>   net/sched/cls_fw.c        |  9 +++++++
>   net/sched/cls_matchall.c  |  9 +++++++
>   net/sched/cls_route.c     |  9 +++++++
>   net/sched/cls_rsvp.h      |  9 +++++++
>   net/sched/cls_tcindex.c   |  9 +++++++
>   net/sched/cls_u32.c       |  9 +++++++
>   net/sched/sch_api.c       | 68 +++++++++++++++++++++++++++++++++++++++++++++--
>   11 files changed, 148 insertions(+), 2 deletions(-)