[Bug 263783] USB MBIM: Support for LTE/4G USB modems (MBIM)

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 09 May 2022 15:09:09 UTC

--- Comment #3 from mike@sentex.net ---
(In reply to Pierre Pronchery from comment #0)

Thanks for publishing this!  I was going to give it a try with a MC7700 modem,
but the driver doesnt seem to attach. I put the device into MBIM mode (I think)


It comes back as 

ugen2.3: <Sierra Wireless, Incorporated MC7700> at usbus2, cfg=0 md=HOST
spd=HIGH (480Mbps) pwr=ON (0mA)

  bLength = 0x0012 
  bDescriptorType = 0x0001 
  bcdUSB = 0x0200 
  bDeviceClass = 0x0000  <Probed by interface class>
  bDeviceSubClass = 0x0000 
  bDeviceProtocol = 0x0000 
  bMaxPacketSize0 = 0x0040 
  idVendor = 0x1199 
  idProduct = 0x68a2 
  bcdDevice = 0x0006 
  iManufacturer = 0x0003  <Sierra Wireless, Incorporated>
  iProduct = 0x0002  <MC7700>
  iSerialNumber = 0x0004  <012810001234846>
  bNumConfigurations = 0x0001 

(instead of 0x68a3 where u3g attached to the device)

But when I load if_umb, no new devices or interfaces get created nor is there
anything in dmesg.  This is on RELENG13 if that makes a difference.

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