netdev - Re: [PATCH net-next v3] Add Common Applications Kept Enhanced (cake) qdisc

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Date:   Fri, 27 Apr 2018 18:54:59 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Toke Høiland-Jørgensen <toke@...e.dk>
Cc:     kbuild-all@...org, netdev@...r.kernel.org,
        cake@...ts.bufferbloat.net,
        Toke Høiland-Jørgensen <toke@...e.dk>,
        Dave Taht <dave.taht@...il.com>
Subject: Re: [PATCH net-next v3] Add Common Applications Kept Enhanced (cake)
 qdisc

Hi Toke,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Toke-H-iland-J-rgensen/Add-Common-Applications-Kept-Enhanced-cake-qdisc/20180427-175308
config: i386-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

>> net/sched/sch_cake.c:68:10: fatal error: pkt_sched.h: No such file or directory
    #include "pkt_sched.h"
             ^~~~~~~~~~~~~
   compilation terminated.

vim +68 net/sched/sch_cake.c

     2	
     3	/* COMMON Applications Kept Enhanced (CAKE) discipline
     4	 *
     5	 * Copyright (C) 2014-2018 Jonathan Morton <chromatix99@...il.com>
     6	 * Copyright (C) 2015-2018 Toke Høiland-Jørgensen <toke@...e.dk>
     7	 * Copyright (C) 2014-2018 Dave Täht <dave.taht@...il.com>
     8	 * Copyright (C) 2015-2018 Sebastian Moeller <moeller0@....de>
     9	 * (C) 2015-2018 Kevin Darbyshire-Bryant <kevin@...byshire-bryant.me.uk>
    10	 * Copyright (C) 2017 Ryan Mounce <ryan@...nce.com.au>
    11	 *
    12	 * The CAKE Principles:
    13	 *		   (or, how to have your cake and eat it too)
    14	 *
    15	 * This is a combination of several shaping, AQM and FQ techniques into one
    16	 * easy-to-use package:
    17	 *
    18	 * - An overall bandwidth shaper, to move the bottleneck away from dumb CPE
    19	 *   equipment and bloated MACs.  This operates in deficit mode (as in sch_fq),
    20	 *   eliminating the need for any sort of burst parameter (eg. token bucket
    21	 *   depth).  Burst support is limited to that necessary to overcome scheduling
    22	 *   latency.
    23	 *
    24	 * - A Diffserv-aware priority queue, giving more priority to certain classes,
    25	 *   up to a specified fraction of bandwidth.  Above that bandwidth threshold,
    26	 *   the priority is reduced to avoid starving other tins.
    27	 *
    28	 * - Each priority tin has a separate Flow Queue system, to isolate traffic
    29	 *   flows from each other.  This prevents a burst on one flow from increasing
    30	 *   the delay to another.  Flows are distributed to queues using a
    31	 *   set-associative hash function.
    32	 *
    33	 * - Each queue is actively managed by Cobalt, which is a combination of the
    34	 *   Codel and Blue AQM algorithms.  This serves flows fairly, and signals
    35	 *   congestion early via ECN (if available) and/or packet drops, to keep
    36	 *   latency low.  The codel parameters are auto-tuned based on the bandwidth
    37	 *   setting, as is necessary at low bandwidths.
    38	 *
    39	 * The configuration parameters are kept deliberately simple for ease of use.
    40	 * Everything has sane defaults.  Complete generality of configuration is *not*
    41	 * a goal.
    42	 *
    43	 * The priority queue operates according to a weighted DRR scheme, combined with
    44	 * a bandwidth tracker which reuses the shaper logic to detect which side of the
    45	 * bandwidth sharing threshold the tin is operating.  This determines whether a
    46	 * priority-based weight (high) or a bandwidth-based weight (low) is used for
    47	 * that tin in the current pass.
    48	 *
    49	 * This qdisc was inspired by Eric Dumazet's fq_codel code, which he kindly
    50	 * granted us permission to leverage.
    51	 */
    52	
    53	#include <linux/module.h>
    54	#include <linux/types.h>
    55	#include <linux/kernel.h>
    56	#include <linux/jiffies.h>
    57	#include <linux/string.h>
    58	#include <linux/in.h>
    59	#include <linux/errno.h>
    60	#include <linux/init.h>
    61	#include <linux/skbuff.h>
    62	#include <linux/jhash.h>
    63	#include <linux/slab.h>
    64	#include <linux/vmalloc.h>
    65	#include <linux/reciprocal_div.h>
    66	#include <net/netlink.h>
    67	#include <linux/version.h>
  > 68	#include "pkt_sched.h"
    69	#include <linux/if_vlan.h>
    70	#include <net/pkt_sched.h>
    71	#include <net/tcp.h>
    72	#include <net/flow_dissector.h>
    73	

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