netdev - Re: [patch net-next v7 09/13] net: sched: allow ingress and clsact qdiscs to share filter blocks

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Date:   Thu, 11 Jan 2018 15:41:51 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Jamal Hadi Salim <jhs@...atatu.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net,
        xiyou.wangcong@...il.com, mlxsw@...lanox.com, andrew@...n.ch,
        vivien.didelot@...oirfairelinux.com, f.fainelli@...il.com,
        michael.chan@...adcom.com, ganeshgr@...lsio.com,
        saeedm@...lanox.com, matanb@...lanox.com, leonro@...lanox.com,
        idosch@...lanox.com, jakub.kicinski@...ronome.com,
        simon.horman@...ronome.com, pieter.jansenvanvuuren@...ronome.com,
        john.hurley@...ronome.com, alexander.h.duyck@...el.com,
        ogerlitz@...lanox.com, john.fastabend@...il.com,
        daniel@...earbox.net, dsahern@...il.com
Subject: Re: [patch net-next v7 09/13] net: sched: allow ingress and clsact
 qdiscs to share filter blocks

Thu, Jan 11, 2018 at 03:37:08PM CET, jhs@...atatu.com wrote:
>On 18-01-11 09:24 AM, Jiri Pirko wrote:
>> Thu, Jan 11, 2018 at 02:36:01PM CET, jhs@...atatu.com wrote:
>> > On 18-01-09 09:07 AM, Jiri Pirko wrote:
>> > > From: Jiri Pirko <jiri@...lanox.com>
>> > > 
>> > > Benefit from the previously introduced shared filter blocks
>> > > infrastructure and allow ingress and clsact qdisc instances to share
>> > > filter blocks. The block index is coming from userspace as qdisc option.
>> > 
>> > Didnt quiet follow why ingress is special and needs attributes to
>> > set the block but other qdiscs didnt.
>> 
>> Jamal, again, other qdiscs does not support block sharing. This patchset
>> only adds support for sharing of block for ingress and clsact qdiscs.
>> Later on, other qdiscs could also support block sharing.
>> 
>
>Can you stop a config which says:
>tc qdisc add dev ens9 root block 22 handle 1:0 prio ?

Please see the iproute2 patches. Parsing of "block" command line option
is done inside q_ingress.c