diff options
Diffstat (limited to 'pkgs/patches-linux-5.15/762-net-next-net-dsa-qca8k-add-support-for-mirror-mode.patch')
| -rw-r--r-- | pkgs/patches-linux-5.15/762-net-next-net-dsa-qca8k-add-support-for-mirror-mode.patch | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/pkgs/patches-linux-5.15/762-net-next-net-dsa-qca8k-add-support-for-mirror-mode.patch b/pkgs/patches-linux-5.15/762-net-next-net-dsa-qca8k-add-support-for-mirror-mode.patch new file mode 100644 index 0000000..69e9b38 --- /dev/null +++ b/pkgs/patches-linux-5.15/762-net-next-net-dsa-qca8k-add-support-for-mirror-mode.patch @@ -0,0 +1,155 @@ +From 2c1bdbc7e7560d7de754cad277d968d56bb1899e Mon Sep 17 00:00:00 2001 +From: Ansuel Smith <ansuelsmth@gmail.com> +Date: Tue, 23 Nov 2021 03:59:10 +0100 +Subject: net: dsa: qca8k: add support for mirror mode + +The switch supports mirror mode. Only one port can set as mirror port and +every other port can set to both ingress and egress mode. The mirror +port is disabled and reverted to normal operation once every port is +removed from sending packet to it. + +Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/dsa/qca8k.c | 95 +++++++++++++++++++++++++++++++++++++++++++++++++ + drivers/net/dsa/qca8k.h | 4 +++ + 2 files changed, 99 insertions(+) + +--- a/drivers/net/dsa/qca8k.c ++++ b/drivers/net/dsa/qca8k.c +@@ -2027,6 +2027,99 @@ qca8k_port_mdb_del(struct dsa_switch *ds + } + + static int ++qca8k_port_mirror_add(struct dsa_switch *ds, int port, ++ struct dsa_mall_mirror_tc_entry *mirror, ++ bool ingress) ++{ ++ struct qca8k_priv *priv = ds->priv; ++ int monitor_port, ret; ++ u32 reg, val; ++ ++ /* Check for existent entry */ ++ if ((ingress ? priv->mirror_rx : priv->mirror_tx) & BIT(port)) ++ return -EEXIST; ++ ++ ret = regmap_read(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0, &val); ++ if (ret) ++ return ret; ++ ++ /* QCA83xx can have only one port set to mirror mode. ++ * Check that the correct port is requested and return error otherwise. ++ * When no mirror port is set, the values is set to 0xF ++ */ ++ monitor_port = FIELD_GET(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val); ++ if (monitor_port != 0xF && monitor_port != mirror->to_local_port) ++ return -EEXIST; ++ ++ /* Set the monitor port */ ++ val = FIELD_PREP(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, ++ mirror->to_local_port); ++ ret = regmap_update_bits(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0, ++ QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val); ++ if (ret) ++ return ret; ++ ++ if (ingress) { ++ reg = QCA8K_PORT_LOOKUP_CTRL(port); ++ val = QCA8K_PORT_LOOKUP_ING_MIRROR_EN; ++ } else { ++ reg = QCA8K_REG_PORT_HOL_CTRL1(port); ++ val = QCA8K_PORT_HOL_CTRL1_EG_MIRROR_EN; ++ } ++ ++ ret = regmap_update_bits(priv->regmap, reg, val, val); ++ if (ret) ++ return ret; ++ ++ /* Track mirror port for tx and rx to decide when the ++ * mirror port has to be disabled. ++ */ ++ if (ingress) ++ priv->mirror_rx |= BIT(port); ++ else ++ priv->mirror_tx |= BIT(port); ++ ++ return 0; ++} ++ ++static void ++qca8k_port_mirror_del(struct dsa_switch *ds, int port, ++ struct dsa_mall_mirror_tc_entry *mirror) ++{ ++ struct qca8k_priv *priv = ds->priv; ++ u32 reg, val; ++ int ret; ++ ++ if (mirror->ingress) { ++ reg = QCA8K_PORT_LOOKUP_CTRL(port); ++ val = QCA8K_PORT_LOOKUP_ING_MIRROR_EN; ++ } else { ++ reg = QCA8K_REG_PORT_HOL_CTRL1(port); ++ val = QCA8K_PORT_HOL_CTRL1_EG_MIRROR_EN; ++ } ++ ++ ret = regmap_clear_bits(priv->regmap, reg, val); ++ if (ret) ++ goto err; ++ ++ if (mirror->ingress) ++ priv->mirror_rx &= ~BIT(port); ++ else ++ priv->mirror_tx &= ~BIT(port); ++ ++ /* No port set to send packet to mirror port. Disable mirror port */ ++ if (!priv->mirror_rx && !priv->mirror_tx) { ++ val = FIELD_PREP(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, 0xF); ++ ret = regmap_update_bits(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0, ++ QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val); ++ if (ret) ++ goto err; ++ } ++err: ++ dev_err(priv->dev, "Failed to del mirror port from %d", port); ++} ++ ++static int + qca8k_port_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering, + struct netlink_ext_ack *extack) + { +@@ -2136,6 +2229,8 @@ static const struct dsa_switch_ops qca8k + .port_fdb_dump = qca8k_port_fdb_dump, + .port_mdb_add = qca8k_port_mdb_add, + .port_mdb_del = qca8k_port_mdb_del, ++ .port_mirror_add = qca8k_port_mirror_add, ++ .port_mirror_del = qca8k_port_mirror_del, + .port_vlan_filtering = qca8k_port_vlan_filtering, + .port_vlan_add = qca8k_port_vlan_add, + .port_vlan_del = qca8k_port_vlan_del, +--- a/drivers/net/dsa/qca8k.h ++++ b/drivers/net/dsa/qca8k.h +@@ -180,6 +180,7 @@ + #define QCA8K_ATU_AGE_TIME(x) FIELD_PREP(QCA8K_ATU_AGE_TIME_MASK, (x)) + #define QCA8K_REG_GLOBAL_FW_CTRL0 0x620 + #define QCA8K_GLOBAL_FW_CTRL0_CPU_PORT_EN BIT(10) ++#define QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM GENMASK(7, 4) + #define QCA8K_REG_GLOBAL_FW_CTRL1 0x624 + #define QCA8K_GLOBAL_FW_CTRL1_IGMP_DP_MASK GENMASK(30, 24) + #define QCA8K_GLOBAL_FW_CTRL1_BC_DP_MASK GENMASK(22, 16) +@@ -201,6 +202,7 @@ + #define QCA8K_PORT_LOOKUP_STATE_LEARNING QCA8K_PORT_LOOKUP_STATE(0x3) + #define QCA8K_PORT_LOOKUP_STATE_FORWARD QCA8K_PORT_LOOKUP_STATE(0x4) + #define QCA8K_PORT_LOOKUP_LEARN BIT(20) ++#define QCA8K_PORT_LOOKUP_ING_MIRROR_EN BIT(25) + + #define QCA8K_REG_GLOBAL_FC_THRESH 0x800 + #define QCA8K_GLOBAL_FC_GOL_XON_THRES_MASK GENMASK(24, 16) +@@ -305,6 +307,8 @@ struct qca8k_ports_config { + struct qca8k_priv { + u8 switch_id; + u8 switch_revision; ++ u8 mirror_rx; ++ u8 mirror_tx; + bool legacy_phy_port_mapping; + struct qca8k_ports_config ports_config; + struct regmap *regmap; |