Has anyone experiences with USB devices (e.g. UMTS modem) offering
"Mobile Broadband Interface Model" (MBIM) interfaces?
According to
www.usb.org/developers/docs/devclass_docs/MBIM10Errata1_073013.zip MBIM
is comparable to NCM ("The largest deviation from NCM 1.0 is that
devices transfer raw IP packets instead of packets with 802.3 headers.")
which is supported by cdce(4).
By hardcoding vendor and device ID in sys/dev/usb/if_cdce.c I managed to
have a modem with MBIM interface attach via cdce:
cdce0 at uhub0 port 4 configuration 1 interface 0 "MediaTek Inc Product" rev
2.00/3.00 addr 2
cdce0: address XX:XX:XX:XX:XX:XX
ifconfig appears to work as well
cdce0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
lladdr XX:XX:XX:XX:XX:XX
priority: 0
but dhclient gets no response. /var/log/messages contains
cdce0: watchdog timeout
cdce0: usb error on tx: TIMEOUT
Any ideas?
Best regards,
Ingo
