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Sat, 30 May 2026 03:52:47 -0700 (PDT) From: Luiz Angelo Daros de Luca Date: Sat, 30 May 2026 07:51:14 -0300 Subject: [net-next PATCH v10 9/9] net: dsa: realtek: rtl8365mb: add bridge port flags Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260530-realtek_forward-v10-9-d14b51e6a69d@gmail.com> References: <20260530-realtek_forward-v10-0-d14b51e6a69d@gmail.com> In-Reply-To: <20260530-realtek_forward-v10-0-d14b51e6a69d@gmail.com> To: Andrew Lunn , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Linus Walleij , =?utf-8?q?Alvin_=C5=A0ipraga?= , Yury Norov , Rasmus Villemoes , Russell King Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Mieczyslaw Nalewaj , Luiz Angelo Daros de Luca X-Mailer: b4 0.15.2 Implement support for bridge port flags to control learning and flooding behavior. This patch maps hardware functionalities to the following bridge flags: - BR_LEARNING - BR_FLOOD - BR_MCAST_FLOOD - BR_BCAST_FLOOD By default, all flooding types are enabled during port setup to ensure standard bridge behavior. Reviewed-by: Linus Walleij Reviewed-by: Mieczyslaw Nalewaj Signed-off-by: Luiz Angelo Daros de Luca --- drivers/net/dsa/realtek/realtek.h | 6 ++ drivers/net/dsa/realtek/rtl8365mb_main.c | 68 +++++++++++++++++++++ drivers/net/dsa/realtek/rtl83xx.c | 101 +++++++++++++++++++++++++++++++ drivers/net/dsa/realtek/rtl83xx.h | 4 ++ 4 files changed, 179 insertions(+) diff --git a/drivers/net/dsa/realtek/realtek.h b/drivers/net/dsa/realtek/realtek.h index 426c9d345e6e..452e4e6dd157 100644 --- a/drivers/net/dsa/realtek/realtek.h +++ b/drivers/net/dsa/realtek/realtek.h @@ -134,6 +134,12 @@ struct realtek_ops { int (*port_set_efid)(struct realtek_priv *priv, int port, u32 efid); int (*port_set_learning)(struct realtek_priv *priv, int port, bool enable); + int (*port_set_ucast_flood)(struct realtek_priv *priv, int port, + bool enable); + int (*port_set_mcast_flood)(struct realtek_priv *priv, int port, + bool enable); + int (*port_set_bcast_flood)(struct realtek_priv *priv, int port, + bool enable); int (*l2_add_uc)(struct realtek_priv *priv, int port, const unsigned char addr[ETH_ALEN], u16 efid, u16 vid); diff --git a/drivers/net/dsa/realtek/rtl8365mb_main.c b/drivers/net/dsa/realtek/rtl8365mb_main.c index 5499c0e02957..708df2aa7552 100644 --- a/drivers/net/dsa/realtek/rtl8365mb_main.c +++ b/drivers/net/dsa/realtek/rtl8365mb_main.c @@ -310,6 +310,21 @@ #define RTL8365MB_MSTI_CTRL_PORT_STATE_MASK(_physport) \ (0x3 << RTL8365MB_MSTI_CTRL_PORT_STATE_OFFSET((_physport))) +/* Unknown unicast DA flooding port mask */ +#define RTL8365MB_UNKNOWN_UNICAST_FLOODING_PMASK_REG 0x0890 +#define RTL8365MB_UNKNOWN_UNICAST_FLOODING_PMASK_MASK 0x07FF + +/* Unknown multicast DA flooding port mask */ +#define RTL8365MB_UNKNOWN_MULTICAST_FLOODING_PMASK_REG 0x0891 +#define RTL8365MB_UNKNOWN_MULTICAST_FLOODING_PMASK_MASK 0x07FF + +/* Broadcast flooding port mask */ +#define RTL8365MB_UNKNOWN_BROADCAST_FLOODING_PMASK_REG 0x0892 +#define RTL8365MB_UNKNOWN_BROADCAST_FLOODING_PMASK_MASK 0x07FF + +#define RTL8365MB_SUPPORTED_BRIDGE_FLAGS \ + (BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD) + /* Miscellaneous port configuration register, incl. VLAN egress mode */ #define RTL8365MB_PORT_MISC_CFG_REG_BASE 0x000E #define RTL8365MB_PORT_MISC_CFG_REG(_p) \ @@ -1550,6 +1565,49 @@ static int rtl8365mb_port_set_learning(struct realtek_priv *priv, int port, enable ? RTL8365MB_LEARN_LIMIT_MAX : 0); } +static int rtl8365mb_port_set_ucast_flood(struct realtek_priv *priv, int port, + bool enable) +{ + /* Frames with unknown unicast DA will be flooded to a programmable + * port mask that by default includes all ports. Add or remove + * the specified port from this port mask accordingly. + */ + return regmap_update_bits(priv->map, + RTL8365MB_UNKNOWN_UNICAST_FLOODING_PMASK_REG, + BIT(port), enable ? BIT(port) : 0); +} + +static int rtl8365mb_port_set_mcast_flood(struct realtek_priv *priv, int port, + bool enable) +{ + return regmap_update_bits(priv->map, + RTL8365MB_UNKNOWN_MULTICAST_FLOODING_PMASK_REG, + BIT(port), enable ? BIT(port) : 0); +} + +static int rtl8365mb_port_set_bcast_flood(struct realtek_priv *priv, int port, + bool enable) +{ + return regmap_update_bits(priv->map, + RTL8365MB_UNKNOWN_BROADCAST_FLOODING_PMASK_REG, + BIT(port), enable ? BIT(port) : 0); +} + +static int rtl8365mb_port_pre_bridge_flags(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack) +{ + struct realtek_priv *priv = ds->priv; + + dev_dbg(priv->dev, "pre_bridge_flags port:%d flags:%lx supported:%lx\n", + port, flags.mask, RTL8365MB_SUPPORTED_BRIDGE_FLAGS); + + if (flags.mask & ~RTL8365MB_SUPPORTED_BRIDGE_FLAGS) + return -EINVAL; + + return 0; +} + static int rtl8365mb_port_set_efid(struct realtek_priv *priv, int port, u32 efid) { @@ -2398,6 +2456,11 @@ static int rtl8365mb_setup(struct dsa_switch *ds) if (ret) goto out_teardown_irq; + /* Enable all types of flooding */ + ret = rtl83xx_setup_port_flood_control(priv, dp->index); + if (ret) + goto out_teardown_irq; + /* Set up per-port private data */ p->priv = priv; p->index = dp->index; @@ -2583,6 +2646,8 @@ static const struct dsa_switch_ops rtl8365mb_switch_ops = { .phylink_get_caps = rtl8365mb_phylink_get_caps, .port_bridge_join = rtl83xx_port_bridge_join, .port_bridge_leave = rtl83xx_port_bridge_leave, + .port_pre_bridge_flags = rtl8365mb_port_pre_bridge_flags, + .port_bridge_flags = rtl83xx_port_bridge_flags, .port_stp_state_set = rtl8365mb_port_stp_state_set, .port_fast_age = rtl83xx_port_fast_age, .port_fdb_add = rtl83xx_port_fdb_add, @@ -2612,6 +2677,9 @@ static const struct realtek_ops rtl8365mb_ops = { .port_remove_isolation = rtl8365mb_port_remove_isolation, .port_set_efid = rtl8365mb_port_set_efid, .port_set_learning = rtl8365mb_port_set_learning, + .port_set_ucast_flood = rtl8365mb_port_set_ucast_flood, + .port_set_mcast_flood = rtl8365mb_port_set_mcast_flood, + .port_set_bcast_flood = rtl8365mb_port_set_bcast_flood, .l2_add_uc = rtl8365mb_l2_add_uc, .l2_del_uc = rtl8365mb_l2_del_uc, .l2_get_next_uc = rtl8365mb_l2_get_next_uc, diff --git a/drivers/net/dsa/realtek/rtl83xx.c b/drivers/net/dsa/realtek/rtl83xx.c index 8b7154db3887..218de350918f 100644 --- a/drivers/net/dsa/realtek/rtl83xx.c +++ b/drivers/net/dsa/realtek/rtl83xx.c @@ -3,6 +3,7 @@ #include #include #include +#include #include #include "realtek.h" @@ -793,6 +794,106 @@ int rtl83xx_port_mdb_del(struct dsa_switch *ds, int port, } EXPORT_SYMBOL_NS_GPL(rtl83xx_port_mdb_del, "REALTEK_DSA"); +/** + * rtl83xx_port_bridge_flags() - set port bridge flags + * @ds: DSA switch instance + * @port: port index + * @flags: bridge port flags + * @extack: netlink extended ack for reporting errors + * + * This function handles setting bridge port flags like learning and flooding. + * + * Context: Can sleep. + * Return: 0 on success, negative value for failure. + */ +int rtl83xx_port_bridge_flags(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack) +{ + struct realtek_priv *priv = ds->priv; + bool enable; + int ret; + + if (flags.mask & BR_LEARNING) { + if (!priv->ops->port_set_learning) + return -EOPNOTSUPP; + + enable = !!(flags.val & BR_LEARNING); + ret = priv->ops->port_set_learning(priv, port, enable); + if (ret) + return ret; + } + + if (flags.mask & BR_FLOOD) { + if (!priv->ops->port_set_ucast_flood) + return -EOPNOTSUPP; + + enable = !!(flags.val & BR_FLOOD); + ret = priv->ops->port_set_ucast_flood(priv, port, enable); + if (ret) + return ret; + } + + if (flags.mask & BR_MCAST_FLOOD) { + if (!priv->ops->port_set_mcast_flood) + return -EOPNOTSUPP; + + enable = !!(flags.val & BR_MCAST_FLOOD); + ret = priv->ops->port_set_mcast_flood(priv, port, enable); + if (ret) + return ret; + } + + if (flags.mask & BR_BCAST_FLOOD) { + if (!priv->ops->port_set_bcast_flood) + return -EOPNOTSUPP; + + enable = !!(flags.val & BR_BCAST_FLOOD); + ret = priv->ops->port_set_bcast_flood(priv, port, enable); + if (ret) + return ret; + } + + return 0; +} +EXPORT_SYMBOL_NS_GPL(rtl83xx_port_bridge_flags, "REALTEK_DSA"); + +/** + * rtl83xx_setup_port_flood_control() - setup default flood control for a port + * @priv: realtek_priv pointer + * @port: port index + * + * This function enables flooding for a given port. + * + * Context: Can sleep. + * Return: 0 on success, negative value for failure. + */ +int rtl83xx_setup_port_flood_control(struct realtek_priv *priv, int port) +{ + int ret; + + if (priv->ops->port_set_ucast_flood) { + ret = priv->ops->port_set_ucast_flood(priv, port, true); + if (ret) + return ret; + } + + if (priv->ops->port_set_mcast_flood) { + ret = priv->ops->port_set_mcast_flood(priv, port, true); + if (ret) + return ret; + } + + if (priv->ops->port_set_bcast_flood) { + ret = priv->ops->port_set_bcast_flood(priv, port, true); + if (ret) + return ret; + } + + return 0; +} +EXPORT_SYMBOL_NS_GPL(rtl83xx_setup_port_flood_control, "REALTEK_DSA"); + MODULE_AUTHOR("Luiz Angelo Daros de Luca "); MODULE_AUTHOR("Linus Walleij "); MODULE_DESCRIPTION("Realtek DSA switches common module"); diff --git a/drivers/net/dsa/realtek/rtl83xx.h b/drivers/net/dsa/realtek/rtl83xx.h index dcb819fe567f..d86447121276 100644 --- a/drivers/net/dsa/realtek/rtl83xx.h +++ b/drivers/net/dsa/realtek/rtl83xx.h @@ -27,6 +27,10 @@ int rtl83xx_port_bridge_join(struct dsa_switch *ds, int port, struct netlink_ext_ack *extack); void rtl83xx_port_bridge_leave(struct dsa_switch *ds, int port, struct dsa_bridge bridge); +int rtl83xx_port_bridge_flags(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack); +int rtl83xx_setup_port_flood_control(struct realtek_priv *priv, int port); void rtl83xx_port_fast_age(struct dsa_switch *ds, int port); int rtl83xx_port_fdb_add(struct dsa_switch *ds, int port, -- 2.54.0