rtl83xx: fix STP by trapping BPDUs

Fix Spanning Tree Protocol (STP) by changing COPY2CPU which currently
makes switch to ignore Bridge Protocol Data Units (BPDUs).

Tested on Zyxel GS1900-8, 24 and 48.

Signed-off-by: Rudolf Vesely <i@rudolfvesely.com>
[ improve commit description and add new line in different sections ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
(cherry picked from commit 41fcc617f94601072d304f2f68e12cf1dd058707)

diff --git a/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c b/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c
index 6f55f1e892ed81d57f0258229c3e146e9e4c8e0a..0af98e4470e56cdc484247ddf08cac803b140737 100644 (file)
--- a/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c
+++ b/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c
@@ -152,7 +152,7 @@ static void rtl83xx_vlan_setup(struct rtl838x_switch_priv *priv)
 static void rtl83xx_setup_bpdu_traps(struct rtl838x_switch_priv *priv)
 {
        for (int i = 0; i < priv->cpu_port; i++)
-               priv->r->set_receive_management_action(i, BPDU, COPY2CPU);
+               priv->r->set_receive_management_action(i, BPDU, TRAP2CPU);
 }
 
 static void rtl83xx_port_set_salrn(struct rtl838x_switch_priv *priv,