[PATCH net-next 2/3 v5] net: dsa: rtl8366rb: Support fast aging
From: Linus Walleij <hidden>
Date: 2021-10-05 19:49:20
Subsystem:
networking drivers, networking [dsa], the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Vladimir Oltean, Linus Torvalds
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 <olteanv@gmail.com> Cc: Mauri Sandberg <redacted> Cc: DENG Qingfang <dqfext@gmail.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk> Signed-off-by: Linus Walleij <redacted> --- 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(+)
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, };
--
2.31.1