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[93.34.89.13]) by smtp.googlemail.com with ESMTPSA id m14-20020a7bcb8e000000b003fbc9371193sm10055353wmi.13.2023.07.24.03.59.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Jul 2023 03:59:30 -0700 (PDT) From: Christian Marangi To: Andrew Lunn , Florian Fainelli , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Christian Marangi , Atin Bainada , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [net-next PATCH 2/3] net: dsa: qca8k: make learning configurable and keep off if standalone Date: Mon, 24 Jul 2023 05:30:57 +0200 Message-Id: <20230724033058.16795-2-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230724033058.16795-1-ansuelsmth@gmail.com> References: <20230724033058.16795-1-ansuelsmth@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-0.6 required=5.0 tests=BAYES_00,DATE_IN_PAST_06_12, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1772300418280348031 X-GMAIL-MSGID: 1772300418280348031 Address learning should initially be turned off by the driver for port operation in standalone mode, then the DSA core handles changes to it via ds->ops->port_bridge_flags(). Currently this is not the case for qca8k where learning is enabled unconditionally in qca8k_setup for every user port. Handle ports configured in standalone mode by making the learning configurable and not enabling it by default. Implement .port_pre_bridge_flags and .port_bridge_flags dsa ops to enable learning for bridge that request it and tweak .port_stp_state_set to correctly disable learning when port is configured in standalone mode. Signed-off-by: Christian Marangi Reviewed-by: Vladimir Oltean Reviewed-by: Florian Fainelli --- drivers/net/dsa/qca/qca8k-8xxx.c | 7 +++-- drivers/net/dsa/qca/qca8k-common.c | 44 ++++++++++++++++++++++++++++++ drivers/net/dsa/qca/qca8k.h | 6 ++++ 3 files changed, 54 insertions(+), 3 deletions(-) diff --git a/drivers/net/dsa/qca/qca8k-8xxx.c b/drivers/net/dsa/qca/qca8k-8xxx.c index ae088a4df794..31552853fdd4 100644 --- a/drivers/net/dsa/qca/qca8k-8xxx.c +++ b/drivers/net/dsa/qca/qca8k-8xxx.c @@ -1870,9 +1870,8 @@ qca8k_setup(struct dsa_switch *ds) if (ret) return ret; - /* Enable ARP Auto-learning by default */ - ret = regmap_set_bits(priv->regmap, QCA8K_PORT_LOOKUP_CTRL(i), - QCA8K_PORT_LOOKUP_LEARN); + ret = regmap_clear_bits(priv->regmap, QCA8K_PORT_LOOKUP_CTRL(i), + QCA8K_PORT_LOOKUP_LEARN); if (ret) return ret; @@ -1978,6 +1977,8 @@ static const struct dsa_switch_ops qca8k_switch_ops = { .port_change_mtu = qca8k_port_change_mtu, .port_max_mtu = qca8k_port_max_mtu, .port_stp_state_set = qca8k_port_stp_state_set, + .port_pre_bridge_flags = qca8k_port_pre_bridge_flags, + .port_bridge_flags = qca8k_port_bridge_flags, .port_bridge_join = qca8k_port_bridge_join, .port_bridge_leave = qca8k_port_bridge_leave, .port_fast_age = qca8k_port_fast_age, diff --git a/drivers/net/dsa/qca/qca8k-common.c b/drivers/net/dsa/qca/qca8k-common.c index 13b8452ce5b2..e53694d2852a 100644 --- a/drivers/net/dsa/qca/qca8k-common.c +++ b/drivers/net/dsa/qca/qca8k-common.c @@ -565,9 +565,26 @@ int qca8k_get_mac_eee(struct dsa_switch *ds, int port, return 0; } +static int qca8k_port_configure_learning(struct dsa_switch *ds, int port, + bool learning) +{ + struct qca8k_priv *priv = ds->priv; + + if (learning) + return regmap_set_bits(priv->regmap, + QCA8K_PORT_LOOKUP_CTRL(port), + QCA8K_PORT_LOOKUP_LEARN); + else + return regmap_clear_bits(priv->regmap, + QCA8K_PORT_LOOKUP_CTRL(port), + QCA8K_PORT_LOOKUP_LEARN); +} + void qca8k_port_stp_state_set(struct dsa_switch *ds, int port, u8 state) { + struct dsa_port *dp = dsa_to_port(ds, port); struct qca8k_priv *priv = ds->priv; + bool learning = false; u32 stp_state; switch (state) { @@ -582,8 +599,11 @@ void qca8k_port_stp_state_set(struct dsa_switch *ds, int port, u8 state) break; case BR_STATE_LEARNING: stp_state = QCA8K_PORT_LOOKUP_STATE_LEARNING; + learning = dp->learning; break; case BR_STATE_FORWARDING: + learning = dp->learning; + fallthrough; default: stp_state = QCA8K_PORT_LOOKUP_STATE_FORWARD; break; @@ -591,6 +611,30 @@ void qca8k_port_stp_state_set(struct dsa_switch *ds, int port, u8 state) qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port), QCA8K_PORT_LOOKUP_STATE_MASK, stp_state); + + qca8k_port_configure_learning(ds, port, learning); +} + +int qca8k_port_pre_bridge_flags(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack) +{ + if (flags.mask & ~BR_LEARNING) + return -EINVAL; + + return 0; +} + +int qca8k_port_bridge_flags(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack) +{ + int ret; + + ret = qca8k_port_configure_learning(ds, port, + flags.val & BR_LEARNING); + + return ret; } int qca8k_port_bridge_join(struct dsa_switch *ds, int port, diff --git a/drivers/net/dsa/qca/qca8k.h b/drivers/net/dsa/qca/qca8k.h index c5cc8a172d65..8f88b7db384d 100644 --- a/drivers/net/dsa/qca/qca8k.h +++ b/drivers/net/dsa/qca/qca8k.h @@ -522,6 +522,12 @@ int qca8k_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e); /* Common bridge function */ void qca8k_port_stp_state_set(struct dsa_switch *ds, int port, u8 state); +int qca8k_port_pre_bridge_flags(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack); +int qca8k_port_bridge_flags(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack); int qca8k_port_bridge_join(struct dsa_switch *ds, int port, struct dsa_bridge bridge, bool *tx_fwd_offload,