[FS#796] Multi-SSID does not work on MT7603 (ZBT-3526) at 2.4 GHz

[LEDE Bugs]

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

User who did this - Mattia Antonini (mattiantonini) 

Attached to Project - LEDE Project
Summary - Multi-SSID does not work on MT7603 (ZBT-3526) at 2.4  GHz
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - All
Due in Version - Undecided
Due Date - Undecided
Details - Device: ZBT-3526
Packages used for wireless: 
kmod-cfg80211		4.4.61+2017-01-31-1
kmod-mac80211		4.4.61+2017-01-31-1
kmod-mt76		4.4.61+2017-03-17-712..f-2
kmod-mt76-core		4.4.61+2017-03-17-712..f-2
kmod-mt7603		4.4.61+2017-03-17-712..f-2
kmod-mt76x2		4.4.61+2017-03-17-712..f-2


Throughput is very poor if I perform an iPerf test on the second 2.4 GHz SSID.

Server (WG3526) iperf -s

------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[  4] local 10.3.231.1 port 5001 connected with 10.3.231.108 port 60952
[ ID] Interval       Transfer     Bandwidth
[  4]  0.0-20.9 sec   256 KBytes   100 Kbits/sec

Client (laptop) iperf -c 10.3.231.1 -i 2 -w 128KB

------------------------------------------------------------
Client connecting to 10.3.231.1, TCP port 5001
TCP window size:  256 KByte (WARNING: requested  128 KByte)
------------------------------------------------------------
[  3] local 10.3.231.108 port 60952 connected with 10.3.231.1 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 2.0 sec   128 KBytes   524 Kbits/sec
[  3]  2.0- 4.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  4.0- 6.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  6.0- 8.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  8.0-10.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 10.0-12.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  0.0-20.9 sec   256 KBytes   101 Kbits/sec

My /etc/config/wireless file is

config wifi-device 'radio0'
	option type 'mac80211'
	option hwmode '11g'
	option path 'pci0000:00/0000:00:00.0/0000:01:00.0'
	option htmode 'HT20'
	option disabled '0'
	option country 'IT'
	option channel '13'
	option txpower '20'

config wifi-device 'radio1'
        option type 'mac80211'
        option channel '36'
        option hwmode '11a'
        option path 'pci0000:00/0000:00:01.0/0000:02:00.0'
        option htmode 'VHT80'
        option disabled '0'

config wifi-iface
        option device 'radio0'
        option mode 'ap'
        option ssid 'Private-bgn'
        option network 'lan'
        option encryption 'psk2'
        option key 'testtest'

config wifi-iface
        option device 'radio1'
        option mode 'ap'
        option ssid 'Private'
        option network 'lan'
        option encryption 'psk2'
        option key 'testtest'

config wifi-iface
	option device 'radio0'
	option network 'lan'
	option mode 'ap'
	option encryption 'none'
	option isolate '1'
	option ssid 'Public-bgn'

config wifi-iface
	option device 'radio1'
	option network 'lan'
	option mode 'ap'
	option encryption 'none'
	option isolate '1'
	option ssid 'Public'



More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=796