target/linux/generic/pending-6.6/711-02-net-dsa-qca8k-enable-flooding-to-both-CPU-port.patch

   1 From b954d61d9ecfa64450fc178586719dc2a95b92a7 Mon Sep 17 00:00:00 2001
   2 From: Christian Marangi <ansuelsmth@gmail.com>
   3 Date: Tue, 20 Jun 2023 21:48:24 +0200
   4 Subject: [PATCH 3/4] net: dsa: qca8k: enable flooding to both CPU port
   5
   6 To permit a multi-CPU setup, flood all unknown frames to all CPU ports.
   7 Each CPU port should have correct LOOKUP MEMBER configuration to
   8 prevent receiving duplicate packets from user ports.
   9
  10 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
  11 ---
  12  drivers/net/dsa/qca/qca8k-8xxx.c | 13 +++++--------
  13  1 file changed, 5 insertions(+), 8 deletions(-)
  14
  15 --- a/drivers/net/dsa/qca/qca8k-8xxx.c
  16 +++ b/drivers/net/dsa/qca/qca8k-8xxx.c
  17 @@ -1901,15 +1901,12 @@ qca8k_setup(struct dsa_switch *ds)
  18                 }
  19         }
  20
  21 -       /* Forward all unknown frames to CPU port for Linux processing
  22 -        * Notice that in multi-cpu config only one port should be set
  23 -        * for igmp, unknown, multicast and broadcast packet
  24 -        */
  25 +       /* Forward all unknown frames to CPU port for Linux processing */
  26         ret = qca8k_write(priv, QCA8K_REG_GLOBAL_FW_CTRL1,
  27 -                         FIELD_PREP(QCA8K_GLOBAL_FW_CTRL1_IGMP_DP_MASK, BIT(cpu_port)) |
  28 -                         FIELD_PREP(QCA8K_GLOBAL_FW_CTRL1_BC_DP_MASK, BIT(cpu_port)) |
  29 -                         FIELD_PREP(QCA8K_GLOBAL_FW_CTRL1_MC_DP_MASK, BIT(cpu_port)) |
  30 -                         FIELD_PREP(QCA8K_GLOBAL_FW_CTRL1_UC_DP_MASK, BIT(cpu_port)));
  31 +                         FIELD_PREP(QCA8K_GLOBAL_FW_CTRL1_IGMP_DP_MASK, dsa_cpu_ports(ds)) |
  32 +                         FIELD_PREP(QCA8K_GLOBAL_FW_CTRL1_BC_DP_MASK, dsa_cpu_ports(ds)) |
  33 +                         FIELD_PREP(QCA8K_GLOBAL_FW_CTRL1_MC_DP_MASK, dsa_cpu_ports(ds)) |
  34 +                         FIELD_PREP(QCA8K_GLOBAL_FW_CTRL1_UC_DP_MASK, dsa_cpu_ports(ds)));
  35         if (ret)
  36                 return ret;
  37