target/linux/generic/backport-5.4/399-5.9-sch_cake-add-RFC-8622-LE-PHB-support-to-CAKE-diffser.patch

   1 From b8392808eb3fc28e523e28cb258c81ca246deb9b Mon Sep 17 00:00:00 2001
   2 From: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
   3 Date: Thu, 25 Jun 2020 22:18:00 +0200
   4 Subject: [PATCH] sch_cake: add RFC 8622 LE PHB support to CAKE diffserv
   5  handling
   6 MIME-Version: 1.0
   7 Content-Type: text/plain; charset=UTF-8
   8 Content-Transfer-Encoding: 8bit
   9
  10 Change tin mapping on diffserv3, 4 & 8 for LE PHB support, in essence
  11 making LE a member of the Bulk tin.
  12
  13 Bulk has the least priority and minimum of 1/16th total bandwidth in the
  14 face of higher priority traffic.
  15
  16 NB: Diffserv 3 & 4 swap tin 0 & 1 priorities from the default order as
  17 found in diffserv8, in case anyone is wondering why it looks a bit odd.
  18
  19 Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
  20 [ reword commit message slightly ]
  21 Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
  22 Signed-off-by: David S. Miller <davem@davemloft.net>
  23 ---
  24  net/sched/sch_cake.c | 8 ++++----
  25  1 file changed, 4 insertions(+), 4 deletions(-)
  26
  27 --- a/net/sched/sch_cake.c
  28 +++ b/net/sched/sch_cake.c
  29 @@ -312,8 +312,8 @@ static const u8 precedence[] = {
  30  };
  31
  32  static const u8 diffserv8[] = {
  33 -       2, 5, 1, 2, 4, 2, 2, 2,
  34 -       0, 2, 1, 2, 1, 2, 1, 2,
  35 +       2, 0, 1, 2, 4, 2, 2, 2,
  36 +       1, 2, 1, 2, 1, 2, 1, 2,
  37         5, 2, 4, 2, 4, 2, 4, 2,
  38         3, 2, 3, 2, 3, 2, 3, 2,
  39         6, 2, 3, 2, 3, 2, 3, 2,
  40 @@ -323,7 +323,7 @@ static const u8 diffserv8[] = {
  41  };
  42
  43  static const u8 diffserv4[] = {
  44 -       0, 2, 0, 0, 2, 0, 0, 0,
  45 +       0, 1, 0, 0, 2, 0, 0, 0,
  46         1, 0, 0, 0, 0, 0, 0, 0,
  47         2, 0, 2, 0, 2, 0, 2, 0,
  48         2, 0, 2, 0, 2, 0, 2, 0,
  49 @@ -334,7 +334,7 @@ static const u8 diffserv4[] = {
  50  };
  51
  52  static const u8 diffserv3[] = {
  53 -       0, 0, 0, 0, 2, 0, 0, 0,
  54 +       0, 1, 0, 0, 2, 0, 0, 0,
  55         1, 0, 0, 0, 0, 0, 0, 0,
  56         0, 0, 0, 0, 0, 0, 0, 0,
  57         0, 0, 0, 0, 0, 0, 0, 0,