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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>
This commit is contained in:
Hauke Mehrtens 2021-06-22 00:45:21 +02:00
parent 790561d510
commit b7ee0786b5
2 changed files with 19 additions and 0 deletions
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13
target/linux/realtek/base-files/lib/preinit/05_set_preinit_iface_realtek Normal file
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@ -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

6
target/linux/realtek/base-files/lib/preinit/98_remove_preinit_realtek Normal file
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@ -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