[FS#1279] VRX200 / BT Home Hub 5A does not correctly configure more than 2 switch VLANs

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Jonathan McDowell (u1f35c) 

Attached to Project - OpenWrt/LEDE Project
Summary - VRX200 / BT Home Hub 5A does not correctly configure more than 2 switch VLANs
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Medium
Priority - Very Low
Reported Version - lede-17.01
Due in Version - Undecided
Due Date - Undecided
Details - Device: BT Home Hub 5A (xRX200 rev 1.2)
Version: LEDE 17.01.4
Kernel: 4.4.92 / swconfig: 11

I have configured up 3 VLANs using Luci. These are correctly added to /etc/config/network and "uci show | grep switch" shows the entries I'd expect. However only 2 VLANs are correctly configured. The 3rd can be brought up with a manual invocation of "swconfig". I've tried the same thing on an DGN3500 (VR9 platform), also with LEDE 17.01.4, and it works there, leading me to suspect this is a kernel issue with the VRX200 driver.

The switch config in /etc/config/network looks like:


config switch
	option name 'switch0'
	option reset '1'
	option enable_vlan '1'

config switch_vlan
	option device 'switch0'
	option vlan '1'
	option vid '3'
	option ports '0 4 5t 6t'

config switch_vlan
	option device 'switch0'
	option vlan '2'
	option ports '2 6t'
	option vid '4'

config switch_vlan
	option device 'switch0'
	option vlan '3'
	option ports '1 5t 6t'
	option vid '5'


Running "swconfig dev switch0 load network" leads to the following switch config:


VLAN 1:
	vid: 3
	enable: 1
	ports: 0 4 5t 6t 
VLAN 2:
	vid: 4
	enable: 1
	ports: 2 6t


No other VLAN stanza are shown but 'swconfig dev switch0 vlan 3 show' shows that while no ports have been added VLAN ID 5 has been correctly configured:


VLAN 3:
	vid: 5
	enable: 1
	ports:


Manually executing "swconfig dev switch0 vlan 3 set ports '1 5t 6t'" brings up the VLAN as expected:


VLAN 3:
	vid: 5
	enable: 1
	ports: 1 5t 6t


uci shows the correct details (uci show | grep switch):


network. at switch[0]=switch
network. at switch[0].name='switch0'
network. at switch[0].reset='1'
network. at switch[0].enable_vlan='1'
network. at switch_vlan[0]=switch_vlan
network. at switch_vlan[0].device='switch0'
network. at switch_vlan[0].vlan='1'
network. at switch_vlan[0].vid='3'
network. at switch_vlan[0].ports='0 4 5t 6t'
network. at switch_vlan[1]=switch_vlan
network. at switch_vlan[1].device='switch0'
network. at switch_vlan[1].vlan='2'
network. at switch_vlan[1].ports='2 6t'
network. at switch_vlan[1].vid='4'
network. at switch_vlan[2]=switch_vlan
network. at switch_vlan[2].device='switch0'
network. at switch_vlan[2].vlan='3'
network. at switch_vlan[2].ports='1 5t 6t'
network. at switch_vlan[2].vid='5'


More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1279