connman wifi autoconnect

[Peter Lawler]

Hi!
I can't seem to get connman to bring up my USB WiFi connection automatically on boot. Seems to happen on both 4.4 and 4.9 kernels. Suggestions welcome.

I'd like to move away from having ethernet on my older boards. I'm using WiPi dongles that work perfectly fine if I manually connect... but... *shrug*. I've spent time looking through the archives here but haven't turned up anything that helps. I admit that doesn't mean it's not out there, just I've reached the point of asking for assistance while I continue to try and work it out.

Cheers

P.

Some info:

$ cat /etc/dogtag
rcn-ee.net console Debian Image 2017-08-11

$ uname -r
4.9.45-ti-r57

$lsusb -v -d $(lsusb | grep -i ralink | cut -f 6 -d \  )
Bus 001 Device 003: ID 148f:5370 Ralink Technology, Corp. RT5370 Wireless Adapter
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x148f Ralink Technology, Corp.
  idProduct          0x5370 RT5370 Wireless Adapter
  bcdDevice            1.01
  iManufacturer           1 Ralink
  iProduct                2 802.11 n WLAN
  iSerial                 3 1.0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           67
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              450mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           7
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              5 1.0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x04  EP 4 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x05  EP 5 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x06  EP 6 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0000
  (Bus Powered)

$ sudo dmesg |grep rt2
[   30.969242] ieee80211 phy0: rt2x00_set_rt: Info - RT chipset 5390, rev 0502 detected
[   31.173473] ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 5370 detected
[   31.273462] ieee80211 phy0: rt2x00lib_request_firmware: Info - Loading firmware file 'rt2870.bin'
[   31.276910] usbcore: registered new interface driver rt2800usb
[   31.286871] ieee80211 phy0: rt2x00lib_request_firmware: Info - Firmware detected - version: 0.36


$ sudo cat /var/lib/connman/wifi_xxxxxxxxxxx_managed_psk/settings
[wifi_xxxxxxxxxxx_managed_psk]
Name=yyyyy
SSID=deadbeef
Frequency=2412
Favorite=true
AutoConnect=true
Modified=2017-09-08T10:57:48.977181Z
Passphrase=zzzzzzzzzzzzzzzzzzzzzzzzzzz
IPv4.method=dhcp
IPv6.method=auto
IPv6.privacy=disabled
IPv4.DHCP.LastAddress=a.b.c.d

$/sbin/ifconfig wlan0
wlan0: flags=-28669<UP,BROADCAST,MULTICAST,DYNAMIC>  mtu 1500
        ether 00:c1:41:34:0e:7c  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[Peter Lawler]

I found a thing from Adafruit for 3.8 kernel https://github.com/adafruit/wifi-reset

It was nice but is relying on iwconfig to do its magic

So I rewrote it for connman

https://gitlab.com/petelawler/wifi-reset

Haven't tested it really with anything apart from 4.4 and 4.9 kernels. Your mileage may vary. Works for me.

Like all hacks, it's a not a good hack because it's clean but because it works.

I've not looked deeply under the hood but I suspect what's going on is that connman is firing off everything before the USB bus is fully enumerated and necessary firmware is loaded. At least, that's my wild stab in the dark.