realtek: Fix failsafe mode

The RTL8380-RTL9300 switches only forward packets when VLAN ID 1 is configured. Do not use the standard failsafe configuration for DSA accessing the default port directly, but configure a switch on the lan1 interface instead. This will add the VLAN ID 1 configuration to the switch: $ bridge vlan show port vlan-id lan1 1 PVID Egress Untagged switch 1 PVID Egress Untagged Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
musashino-build · Jun 22, 2021 · b7ee078 · b7ee078
1 parent 790561d
commit b7ee078
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diff --git a/target/linux/realtek/base-files/lib/preinit/05_set_preinit_iface_realtek b/target/linux/realtek/base-files/lib/preinit/05_set_preinit_iface_realtek
@@ -0,0 +1,13 @@
+set_preinit_iface() {
+
+	# Create a switch on lan1 to configure the VLAN 1.
+	# Without configuring VLAN ID 1 RTL8380 - RTL9300 will not
+	# forward packets.
+	ip link add name switch type bridge vlan_filtering 1
+	ip link set dev lan1 master switch
+	ip link set lan1 up
+
+	pi_ifname=switch
+}
+
+boot_hook_add preinit_main set_preinit_iface
diff --git a/target/linux/realtek/base-files/lib/preinit/98_remove_preinit_realtek b/target/linux/realtek/base-files/lib/preinit/98_remove_preinit_realtek
@@ -0,0 +1,6 @@
+remove_switch() {
+	# delete switch created in 05_set_preinit_iface_realtek again
+	ip link del name switch
+}
+
+boot_hook_add preinit_main remove_switch