target/linux/generic/hack-4.9/661-use_fq_codel_by_default.patch

   1 From 1d418f7e88035ed7a94073f6354246c66e9193e9 Mon Sep 17 00:00:00 2001
   2 From: Felix Fietkau <nbd@nbd.name>
   3 Date: Fri, 7 Jul 2017 17:22:58 +0200
   4 Subject: fq_codel: switch default qdisc from pfifo_fast to fq_codel and remove pfifo_fast
   5
   6 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   7 ---
   8  include/net/sch_generic.h | 3 ++-
   9  net/sched/Kconfig         | 3 ++-
  10  net/sched/sch_api.c       | 2 +-
  11  net/sched/sch_fq_codel.c  | 3 ++-
  12  net/sched/sch_generic.c   | 4 ++--
  13  5 files changed, 9 insertions(+), 6 deletions(-)
  14
  15 diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
  16 index e6aa0a249672..9eeb368d7eea 100644
  17 --- a/include/net/sch_generic.h
  18 +++ b/include/net/sch_generic.h
  19 @@ -339,12 +339,13 @@ extern struct Qdisc_ops noop_qdisc_ops;
  20  extern struct Qdisc_ops pfifo_fast_ops;
  21  extern struct Qdisc_ops mq_qdisc_ops;
  22  extern struct Qdisc_ops noqueue_qdisc_ops;
  23 +extern struct Qdisc_ops fq_codel_qdisc_ops;
  24  extern const struct Qdisc_ops *default_qdisc_ops;
  25  static inline const struct Qdisc_ops *
  26  get_default_qdisc_ops(const struct net_device *dev, int ntx)
  27  {
  28         return ntx < dev->real_num_tx_queues ?
  29 -                       default_qdisc_ops : &pfifo_fast_ops;
  30 +                       default_qdisc_ops : &fq_codel_qdisc_ops;
  31  }
  32
  33  struct Qdisc_class_common {
  34 diff --git a/net/sched/Kconfig b/net/sched/Kconfig
  35 index 87956a768d1b..89c6db93cb63 100644
  36 --- a/net/sched/Kconfig
  37 +++ b/net/sched/Kconfig
  38 @@ -3,8 +3,9 @@
  39  #
  40
  41  menuconfig NET_SCHED
  42 -       bool "QoS and/or fair queueing"
  43 +       def_bool y
  44         select NET_SCH_FIFO
  45 +       select NET_SCH_FQ_CODEL
  46         ---help---
  47           When the kernel has several packets to send out over a network
  48           device, it has to decide which ones to send first, which ones to
  49 diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
  50 index 206dc24add3a..9b5cfb6ac64b 100644
  51 --- a/net/sched/sch_api.c
  52 +++ b/net/sched/sch_api.c
  53 @@ -1976,7 +1976,7 @@ static int __init pktsched_init(void)
  54                 return err;
  55         }
  56
  57 -       register_qdisc(&pfifo_fast_ops);
  58 +       register_qdisc(&fq_codel_qdisc_ops);
  59         register_qdisc(&pfifo_qdisc_ops);
  60         register_qdisc(&bfifo_qdisc_ops);
  61         register_qdisc(&pfifo_head_drop_qdisc_ops);
  62 diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
  63 index 4467b95795bf..2ebbf50658e5 100644
  64 --- a/net/sched/sch_fq_codel.c
  65 +++ b/net/sched/sch_fq_codel.c
  66 @@ -705,7 +705,7 @@ static const struct Qdisc_class_ops fq_codel_class_ops = {
  67         .walk           =       fq_codel_walk,
  68  };
  69
  70 -static struct Qdisc_ops fq_codel_qdisc_ops __read_mostly = {
  71 +struct Qdisc_ops fq_codel_qdisc_ops __read_mostly = {
  72         .cl_ops         =       &fq_codel_class_ops,
  73         .id             =       "fq_codel",
  74         .priv_size      =       sizeof(struct fq_codel_sched_data),
  75 @@ -720,6 +720,7 @@ static struct Qdisc_ops fq_codel_qdisc_ops __read_mostly = {
  76         .dump_stats =   fq_codel_dump_stats,
  77         .owner          =       THIS_MODULE,
  78  };
  79 +EXPORT_SYMBOL(fq_codel_qdisc_ops);
  80
  81  static int __init fq_codel_module_init(void)
  82  {
  83 diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
  84 index 6cfb6e9038c2..97de97e3c5e2 100644
  85 --- a/net/sched/sch_generic.c
  86 +++ b/net/sched/sch_generic.c
  87 @@ -31,7 +31,7 @@
  88  #include <net/dst.h>
  89
  90  /* Qdisc to use by default */
  91 -const struct Qdisc_ops *default_qdisc_ops = &pfifo_fast_ops;
  92 +const struct Qdisc_ops *default_qdisc_ops = &fq_codel_qdisc_ops;
  93  EXPORT_SYMBOL(default_qdisc_ops);
  94
  95  /* Main transmission queue. */
  96 @@ -759,7 +759,7 @@ static void attach_one_default_qdisc(struct net_device *dev,
  97                                      void *_unused)
  98  {
  99         struct Qdisc *qdisc;
 100 -       const struct Qdisc_ops *ops = default_qdisc_ops;
 101 +       const struct Qdisc_ops *ops = &fq_codel_qdisc_ops;
 102
 103         if (dev->priv_flags & IFF_NO_QUEUE)
 104                 ops = &noqueue_qdisc_ops;
 105 --
 106 2.11.0
 107