netdev - Re: [PATCH net-next v8 2/3] net sched actions: dump more than TCA_ACT_MAX

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Date:   Wed, 26 Apr 2017 13:02:42 +0200
From:   Simon Horman <simon.horman@...ronome.com>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     Jamal Hadi Salim <jhs@...atatu.com>, davem@...emloft.net,
        xiyou.wangcong@...il.com, eric.dumazet@...il.com,
        netdev@...r.kernel.org
Subject: Re: [PATCH net-next v8 2/3] net sched actions: dump more than
 TCA_ACT_MAX_PRIO actions per batch

On Tue, Apr 25, 2017 at 06:04:45PM +0200, Jiri Pirko wrote:
> Tue, Apr 25, 2017 at 03:01:22PM CEST, jhs@...atatu.com wrote:
> >On 17-04-25 08:13 AM, Jiri Pirko wrote:
> >> Tue, Apr 25, 2017 at 01:54:06PM CEST, jhs@...atatu.com wrote:
> >
> >
> >[..]
> >
> >> > -#define TCAA_MAX 1
> >> > +/* tcamsg flags stored in attribute TCA_ROOT_FLAGS
> >> > + *
> >> > + * TCA_FLAG_LARGE_DUMP_ON user->kernel to request for larger than TCA_ACT_MAX_PRIO
> >> > + * actions in a dump. All dump responses will contain the number of actions
> >> > + * being dumped stored in for user app's consumption in TCA_ROOT_COUNT
> >> > + *
> >> > + */
> >> > +#define TCA_FLAG_LARGE_DUMP_ON		(1 << 0)
> >> 
> >> BIT (I think I mentioned this before)
> >> 
> >
> >You did - but i took it out about two submissions back (per cover
> >letter) because it is no part of UAPI today. I noticed devlink was
> >using it but they defined  their own variant.
> >So if i added this, iproute2 doesnt compile. I could fix iproute2
> >to move it somewhere to a common header then restore this.
> 
> So fix iproute2. It is always first kernel, then iproute2.

Perhaps I am missing the point or somehow misguided but I would expect that
if the UAPI uses BIT() it also provides BIT().

...