target/linux/generic/backport-5.10/763-v5.11-net-dsa-mt7530-enable-MTU-normalization.patch

   1 From 771c8901568dd8776a260aa93db41be88a60389e Mon Sep 17 00:00:00 2001
   2 From: DENG Qingfang <dqfext@gmail.com>
   3 Date: Fri, 11 Dec 2020 01:03:22 +0800
   4 Subject: [PATCH] net: dsa: mt7530: enable MTU normalization
   5
   6 MT7530 has a global RX length register, so we are actually changing its
   7 MRU.
   8 Enable MTU normalization for this reason.
   9
  10 Signed-off-by: DENG Qingfang <dqfext@gmail.com>
  11 Acked-by: Landen Chao <landen.chao@mediatek.com>
  12 Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
  13 Link: https://lore.kernel.org/r/20201210170322.3433-1-dqfext@gmail.com
  14 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  15 ---
  16  drivers/net/dsa/mt7530.c | 2 ++
  17  1 file changed, 2 insertions(+)
  18
  19 --- a/drivers/net/dsa/mt7530.c
  20 +++ b/drivers/net/dsa/mt7530.c
  21 @@ -1703,6 +1703,7 @@ mt7530_setup(struct dsa_switch *ds)
  22          */
  23         dn = dsa_to_port(ds, MT7530_CPU_PORT)->master->dev.of_node->parent;
  24         ds->configure_vlan_while_not_filtering = true;
  25 +       ds->mtu_enforcement_ingress = true;
  26
  27         if (priv->id == ID_MT7530) {
  28                 regulator_set_voltage(priv->core_pwr, 1000000, 1000000);
  29 @@ -1948,6 +1949,7 @@ mt7531_setup(struct dsa_switch *ds)
  30         }
  31
  32         ds->configure_vlan_while_not_filtering = true;
  33 +       ds->mtu_enforcement_ingress = true;
  34
  35         /* Flush the FDB table */
  36         ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);