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[92.34.204.253]) by smtp.gmail.com with ESMTPSA id k28sm2083577ljn.57.2021.10.05.12.49.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Oct 2021 12:49:14 -0700 (PDT) From: Linus Walleij To: Andrew Lunn , Vivien Didelot , Florian Fainelli , Vladimir Oltean , "David S . Miller" , Jakub Kicinski Cc: netdev@vger.kernel.org, Linus Walleij , Mauri Sandberg , DENG Qingfang , =?utf-8?q?Alvin_=C5=A0ipraga?= Subject: [PATCH net-next 2/3 v5] net: dsa: rtl8366rb: Support fast aging Date: Tue, 5 Oct 2021 21:47:03 +0200 Message-Id: <20211005194704.342329-3-linus.walleij@linaro.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211005194704.342329-1-linus.walleij@linaro.org> References: <20211005194704.342329-1-linus.walleij@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This implements fast aging per-port using the special "security" register, which will flush any learned L2 LUT entries on a port. The vendor API just enabled setting and clearing this bit, so we set it to age out any entries on the port and then we clear it again. Suggested-by: Vladimir Oltean Cc: Mauri Sandberg Cc: DENG Qingfang Cc: Florian Fainelli Reviewed-by: Alvin Šipraga Signed-off-by: Linus Walleij --- ChangeLog v4->v5: - Update changelog a bit what else can we do. ChangeLog v3->v4: - No changes, rebased on the other patches. ChangeLog v2->v3: - Underscore that this only affects learned L2 entries, not static ones. ChangeLog v1->v2: - New patch suggested by Vladimir. --- drivers/net/dsa/rtl8366rb.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) -- 2.31.1 Reviewed-by: Vladimir Oltean diff --git a/drivers/net/dsa/rtl8366rb.c b/drivers/net/dsa/rtl8366rb.c index b3056064b937..c78e4220ddd1 100644 --- a/drivers/net/dsa/rtl8366rb.c +++ b/drivers/net/dsa/rtl8366rb.c @@ -1308,6 +1308,19 @@ rtl8366rb_port_bridge_flags(struct dsa_switch *ds, int port, return 0; } +static void +rtl8366rb_port_fast_age(struct dsa_switch *ds, int port) +{ + struct realtek_smi *smi = ds->priv; + + /* This will age out any learned L2 entries */ + regmap_update_bits(smi->map, RTL8366RB_SECURITY_CTRL, + BIT(port), BIT(port)); + /* Restore the normal state of things */ + regmap_update_bits(smi->map, RTL8366RB_SECURITY_CTRL, + BIT(port), 0); +} + static int rtl8366rb_change_mtu(struct dsa_switch *ds, int port, int new_mtu) { struct realtek_smi *smi = ds->priv; @@ -1720,6 +1733,7 @@ static const struct dsa_switch_ops rtl8366rb_switch_ops = { .port_disable = rtl8366rb_port_disable, .port_pre_bridge_flags = rtl8366rb_port_pre_bridge_flags, .port_bridge_flags = rtl8366rb_port_bridge_flags, + .port_fast_age = rtl8366rb_port_fast_age, .port_change_mtu = rtl8366rb_change_mtu, .port_max_mtu = rtl8366rb_max_mtu, };