netdev - RE: [PATCH v4 iproute2-next 1/1] tc: add dualpi2 scheduler module

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Message-ID:
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Date: Tue, 18 Mar 2025 12:55:59 +0000
From: "Chia-Yu Chang (Nokia)" <chia-yu.chang@...ia-bell-labs.com>
To: Stephen Hemminger <stephen@...workplumber.org>
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Subject: RE: [PATCH v4 iproute2-next 1/1] tc: add dualpi2 scheduler module

> -----Original Message-----
> From: Stephen Hemminger <stephen@...workplumber.org> 
> Sent: Monday, March 17, 2025 2:36 PM
> To: Chia-Yu Chang (Nokia) <chia-yu.chang@...ia-bell-labs.com>
> Cc: netdev@...r.kernel.org; dave.taht@...il.com; pabeni@...hat.com; jhs@...atatu.com; kuba@...nel.org; xiyou.wangcong@...il.com; jiri@...nulli.us; davem@...emloft.net; edumazet@...gle.com; horms@...nel.org; andrew+netdev@...n.ch; donald.hunter@...il.com; ast@...erby.net; liuhangbin@...il.com; shuah@...nel.org; linux-kselftest@...r.kernel.org; ij@...nel.org; ncardwell@...gle.com; Koen De Schepper (Nokia) <koen.de_schepper@...ia-bell-labs.com>; g.white <g.white@...lelabs.com>; ingemar.s.johansson@...csson.com; mirja.kuehlewind@...csson.com; cheshire@...le.com; rs.ietf@....at; Jason_Livingood@...cast.com; vidhi_goel <vidhi_goel@...le.com>; Olga Albisser <olga@...isser.org>; Olivier Tilmans (Nokia) <olivier.tilmans@...ia.com>; Bob Briscoe <research@...briscoe.net>; Henrik Steen <henrist@...rist.net>
> Subject: Re: [PATCH v4 iproute2-next 1/1] tc: add dualpi2 scheduler module
> 
> 
> CAUTION: This is an external email. Please be very careful when clicking links or opening attachments. See the URL nok.it/ext for additional information.
> 
> 
> 
> On Sun, 16 Mar 2025 16:39:17 +0100
> chia-yu.chang@...ia-bell-labs.com wrote:
> 
> > +static int dualpi2_print_xstats(struct qdisc_util *qu, FILE *f,
> > +                         struct rtattr *xstats) {
> > +     struct tc_dualpi2_xstats *st;
> > +
> > +     if (xstats == NULL)
> > +             return 0;
> > +
> > +     if (RTA_PAYLOAD(xstats) < sizeof(*st))
> > +             return -1;
> > +
> > +     st = RTA_DATA(xstats);
> > +     fprintf(f, "prob %f delay_c %uus delay_l %uus\n",
> > +             (double)st->prob / (double)MAX_PROB, st->delay_c, st->delay_l);
> > +     fprintf(f, "pkts_in_c %u pkts_in_l %u maxq %u\n",
> > +             st->packets_in_c, st->packets_in_l, st->maxq);
> > +     fprintf(f, "ecn_mark %u step_marks %u\n", st->ecn_mark, st->step_marks);
> > +     fprintf(f, "credit %d (%c)\n", st->credit, st->credit > 0 ? 'C' : 'L');
> > +     fprintf(f, "memory used %u (max %u) of memory limit %u\n",
> > +             st->memory_used, st->max_memory_used, st->memory_limit);
> > +     return 0;
> > +
> 
> You should support JSON for the stats as well.

Sure, will do that in the next version.