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realtek: dsa: Sync CIST with MSTI state for unbridged ports

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The VLANs and their MSTIs are shared on the realtek switch HW between
bridged and unbridged ports. But the MSTI state cannot be updated for an
unbridged port via DSA. To ensure that the port is still configured
correctly after leaving a bridge, the CIST state updates via DSA must also
be propagated to the MSTI states.

Suggested-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: Sven Eckelmann <se@simonwunderlich.de>
Link: https://github.com/openwrt/openwrt/pull/20421
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Sven Eckelmann 2025-10-27 17:19:24 +01:00 • committed by Hauke Mehrtens
parent 5d36445dc1
commit 5e77a81877
1 changed files with 11 additions and 0 deletions
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11
target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/dsa.c
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@ -1597,9 +1597,20 @@ static void rtldsa_port_xstp_state_set(struct rtl838x_switch_priv *priv, int por
void rtl83xx_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
{
struct rtl838x_switch_priv *priv = ds->priv;
struct dsa_port *dp = dsa_to_port(ds, port);
unsigned int i;
mutex_lock(&priv->reg_mutex);
rtldsa_port_xstp_state_set(priv, port, state, 0);
if (dp->bridge)
goto unlock;
/* for unbridged ports, also force the same state to the MSTIs */
for (i = 1; i < priv->n_mst; i++)
rtldsa_port_xstp_state_set(priv, port, state, i);
unlock:
mutex_unlock(&priv->reg_mutex);
}