target/linux/generic/backport-5.15/771-v6.0-11-net-dsa-qca8k-move-port-mirror-functions-to-common-c.patch

   1 From 742d37a84d3f7bb60d9b2d9ada9ad4e599f65ebf Mon Sep 17 00:00:00 2001
   2 From: Christian Marangi <ansuelsmth@gmail.com>
   3 Date: Wed, 27 Jul 2022 13:35:20 +0200
   4 Subject: [PATCH 11/14] net: dsa: qca8k: move port mirror functions to common
   5  code
   6
   7 The same port mirror functions are used by drivers based on qca8k family
   8 switch. Move them to common code to make them accessible also by other
   9 drivers.
  10
  11 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
  12 Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
  13 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  14 ---
  15  drivers/net/dsa/qca/qca8k-8xxx.c   | 93 ------------------------------
  16  drivers/net/dsa/qca/qca8k-common.c | 91 +++++++++++++++++++++++++++++
  17  drivers/net/dsa/qca/qca8k.h        |  7 +++
  18  3 files changed, 98 insertions(+), 93 deletions(-)
  19
  20 --- a/drivers/net/dsa/qca/qca8k-8xxx.c
  21 +++ b/drivers/net/dsa/qca/qca8k-8xxx.c
  22 @@ -1838,99 +1838,6 @@ exit:
  23  }
  24
  25  static int
  26 -qca8k_port_mirror_add(struct dsa_switch *ds, int port,
  27 -                     struct dsa_mall_mirror_tc_entry *mirror,
  28 -                     bool ingress)
  29 -{
  30 -       struct qca8k_priv *priv = ds->priv;
  31 -       int monitor_port, ret;
  32 -       u32 reg, val;
  33 -
  34 -       /* Check for existent entry */
  35 -       if ((ingress ? priv->mirror_rx : priv->mirror_tx) & BIT(port))
  36 -               return -EEXIST;
  37 -
  38 -       ret = regmap_read(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0, &val);
  39 -       if (ret)
  40 -               return ret;
  41 -
  42 -       /* QCA83xx can have only one port set to mirror mode.
  43 -        * Check that the correct port is requested and return error otherwise.
  44 -        * When no mirror port is set, the values is set to 0xF
  45 -        */
  46 -       monitor_port = FIELD_GET(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val);
  47 -       if (monitor_port != 0xF && monitor_port != mirror->to_local_port)
  48 -               return -EEXIST;
  49 -
  50 -       /* Set the monitor port */
  51 -       val = FIELD_PREP(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM,
  52 -                        mirror->to_local_port);
  53 -       ret = regmap_update_bits(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0,
  54 -                                QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val);
  55 -       if (ret)
  56 -               return ret;
  57 -
  58 -       if (ingress) {
  59 -               reg = QCA8K_PORT_LOOKUP_CTRL(port);
  60 -               val = QCA8K_PORT_LOOKUP_ING_MIRROR_EN;
  61 -       } else {
  62 -               reg = QCA8K_REG_PORT_HOL_CTRL1(port);
  63 -               val = QCA8K_PORT_HOL_CTRL1_EG_MIRROR_EN;
  64 -       }
  65 -
  66 -       ret = regmap_update_bits(priv->regmap, reg, val, val);
  67 -       if (ret)
  68 -               return ret;
  69 -
  70 -       /* Track mirror port for tx and rx to decide when the
  71 -        * mirror port has to be disabled.
  72 -        */
  73 -       if (ingress)
  74 -               priv->mirror_rx |= BIT(port);
  75 -       else
  76 -               priv->mirror_tx |= BIT(port);
  77 -
  78 -       return 0;
  79 -}
  80 -
  81 -static void
  82 -qca8k_port_mirror_del(struct dsa_switch *ds, int port,
  83 -                     struct dsa_mall_mirror_tc_entry *mirror)
  84 -{
  85 -       struct qca8k_priv *priv = ds->priv;
  86 -       u32 reg, val;
  87 -       int ret;
  88 -
  89 -       if (mirror->ingress) {
  90 -               reg = QCA8K_PORT_LOOKUP_CTRL(port);
  91 -               val = QCA8K_PORT_LOOKUP_ING_MIRROR_EN;
  92 -       } else {
  93 -               reg = QCA8K_REG_PORT_HOL_CTRL1(port);
  94 -               val = QCA8K_PORT_HOL_CTRL1_EG_MIRROR_EN;
  95 -       }
  96 -
  97 -       ret = regmap_clear_bits(priv->regmap, reg, val);
  98 -       if (ret)
  99 -               goto err;
 100 -
 101 -       if (mirror->ingress)
 102 -               priv->mirror_rx &= ~BIT(port);
 103 -       else
 104 -               priv->mirror_tx &= ~BIT(port);
 105 -
 106 -       /* No port set to send packet to mirror port. Disable mirror port */
 107 -       if (!priv->mirror_rx && !priv->mirror_tx) {
 108 -               val = FIELD_PREP(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, 0xF);
 109 -               ret = regmap_update_bits(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0,
 110 -                                        QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val);
 111 -               if (ret)
 112 -                       goto err;
 113 -       }
 114 -err:
 115 -       dev_err(priv->dev, "Failed to del mirror port from %d", port);
 116 -}
 117 -
 118 -static int
 119  qca8k_port_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
 120                           struct netlink_ext_ack *extack)
 121  {
 122 --- a/drivers/net/dsa/qca/qca8k-common.c
 123 +++ b/drivers/net/dsa/qca/qca8k-common.c
 124 @@ -741,3 +741,94 @@ int qca8k_port_mdb_del(struct dsa_switch
 125
 126         return qca8k_fdb_search_and_del(priv, BIT(port), addr, vid);
 127  }
 128 +
 129 +int qca8k_port_mirror_add(struct dsa_switch *ds, int port,
 130 +                         struct dsa_mall_mirror_tc_entry *mirror,
 131 +                         bool ingress)
 132 +{
 133 +       struct qca8k_priv *priv = ds->priv;
 134 +       int monitor_port, ret;
 135 +       u32 reg, val;
 136 +
 137 +       /* Check for existent entry */
 138 +       if ((ingress ? priv->mirror_rx : priv->mirror_tx) & BIT(port))
 139 +               return -EEXIST;
 140 +
 141 +       ret = regmap_read(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0, &val);
 142 +       if (ret)
 143 +               return ret;
 144 +
 145 +       /* QCA83xx can have only one port set to mirror mode.
 146 +        * Check that the correct port is requested and return error otherwise.
 147 +        * When no mirror port is set, the values is set to 0xF
 148 +        */
 149 +       monitor_port = FIELD_GET(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val);
 150 +       if (monitor_port != 0xF && monitor_port != mirror->to_local_port)
 151 +               return -EEXIST;
 152 +
 153 +       /* Set the monitor port */
 154 +       val = FIELD_PREP(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM,
 155 +                        mirror->to_local_port);
 156 +       ret = regmap_update_bits(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0,
 157 +                                QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val);
 158 +       if (ret)
 159 +               return ret;
 160 +
 161 +       if (ingress) {
 162 +               reg = QCA8K_PORT_LOOKUP_CTRL(port);
 163 +               val = QCA8K_PORT_LOOKUP_ING_MIRROR_EN;
 164 +       } else {
 165 +               reg = QCA8K_REG_PORT_HOL_CTRL1(port);
 166 +               val = QCA8K_PORT_HOL_CTRL1_EG_MIRROR_EN;
 167 +       }
 168 +
 169 +       ret = regmap_update_bits(priv->regmap, reg, val, val);
 170 +       if (ret)
 171 +               return ret;
 172 +
 173 +       /* Track mirror port for tx and rx to decide when the
 174 +        * mirror port has to be disabled.
 175 +        */
 176 +       if (ingress)
 177 +               priv->mirror_rx |= BIT(port);
 178 +       else
 179 +               priv->mirror_tx |= BIT(port);
 180 +
 181 +       return 0;
 182 +}
 183 +
 184 +void qca8k_port_mirror_del(struct dsa_switch *ds, int port,
 185 +                          struct dsa_mall_mirror_tc_entry *mirror)
 186 +{
 187 +       struct qca8k_priv *priv = ds->priv;
 188 +       u32 reg, val;
 189 +       int ret;
 190 +
 191 +       if (mirror->ingress) {
 192 +               reg = QCA8K_PORT_LOOKUP_CTRL(port);
 193 +               val = QCA8K_PORT_LOOKUP_ING_MIRROR_EN;
 194 +       } else {
 195 +               reg = QCA8K_REG_PORT_HOL_CTRL1(port);
 196 +               val = QCA8K_PORT_HOL_CTRL1_EG_MIRROR_EN;
 197 +       }
 198 +
 199 +       ret = regmap_clear_bits(priv->regmap, reg, val);
 200 +       if (ret)
 201 +               goto err;
 202 +
 203 +       if (mirror->ingress)
 204 +               priv->mirror_rx &= ~BIT(port);
 205 +       else
 206 +               priv->mirror_tx &= ~BIT(port);
 207 +
 208 +       /* No port set to send packet to mirror port. Disable mirror port */
 209 +       if (!priv->mirror_rx && !priv->mirror_tx) {
 210 +               val = FIELD_PREP(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, 0xF);
 211 +               ret = regmap_update_bits(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0,
 212 +                                        QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val);
 213 +               if (ret)
 214 +                       goto err;
 215 +       }
 216 +err:
 217 +       dev_err(priv->dev, "Failed to del mirror port from %d", port);
 218 +}
 219 --- a/drivers/net/dsa/qca/qca8k.h
 220 +++ b/drivers/net/dsa/qca/qca8k.h
 221 @@ -480,4 +480,11 @@ int qca8k_port_mdb_add(struct dsa_switch
 222  int qca8k_port_mdb_del(struct dsa_switch *ds, int port,
 223                        const struct switchdev_obj_port_mdb *mdb);
 224
 225 +/* Common port mirror function */
 226 +int qca8k_port_mirror_add(struct dsa_switch *ds, int port,
 227 +                         struct dsa_mall_mirror_tc_entry *mirror,
 228 +                         bool ingress);
 229 +void qca8k_port_mirror_del(struct dsa_switch *ds, int port,
 230 +                          struct dsa_mall_mirror_tc_entry *mirror);
 231 +
 232  #endif /* __QCA8K_H */