1.\" $NetBSD: umb.4,v 1.4 2019/08/30 09:22:17 wiz Exp $ 2.\" 3.\" Copyright (c) 2016 genua mbH 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd August 24, 2019 18.Dt UMB 4 19.Os 20.Sh NAME 21.Nm umb 22.Nd USB Mobile Broadband Interface Model (MBIM) 23.Sh SYNOPSIS 24.Cd "umb* at uhub? port?" 25.Sh DESCRIPTION 26The 27.Nm 28driver provides support for USB MBIM devices. 29.Pp 30MBIM devices establish connections via cellular networks such as 31GPRS, UMTS, and LTE. 32They appear as a regular point-to-point network interface, 33transporting raw IP frames. 34.Pp 35Required configuration parameters like PIN and APN have to be set 36with 37.Xr umbctl 8 . 38Once the SIM card has been unlocked with the correct PIN, it 39will remain in this state until the MBIM device is power-cycled. 40In case the device is connected to an "always-on" USB port, 41it may be possible to connect to a provider without entering the 42PIN again even if the system was rebooted. 43.Sh HARDWARE 44The following devices should work: 45.Pp 46.Bl -tag -width Ds -offset indent -compact 47.It Ericsson H5321gw and N5321gw 48.It Fibocom L831-EAU 49.It Medion Mobile S4222 (MediaTek OEM) 50.It Sierra Wireless EM7345 51.It Sierra Wireless EM7455 52.It Sierra Wireless EM8805 53.It Sierra Wireless MC8305 54.El 55.Sh SEE ALSO 56.Xr intro 4 , 57.Xr netintro 4 , 58.Xr usb 4 , 59.Xr ifconfig.if 5 , 60.Xr ifconfig 8 , 61.Xr umbctl 8 62.Rs 63.%T "Universal Serial Bus Communications Class Subclass Specification for Mobile Broadband Interface Model" 64.%U http://www.usb.org/developers/docs/devclass_docs/MBIM10Errata1_073013.zip 65.Re 66.Sh HISTORY 67The 68.Nm 69device driver first appeared in 70.Ox 6.0 71and 72.Nx 9.0 . 73.Sh AUTHORS 74.An -nosplit 75The 76.Nm 77driver was written by 78.An Gerhard Roth Aq Mt gerhard@openbsd.org 79and ported from 80.Ox 81by 82.An Pierre Pronchery Aq Mt khorben@defora.org . 83.Sh CAVEATS 84The 85.Nm 86driver does not support IPv6. 87.Pp 88Devices which fail to provide a conforming MBIM implementation will 89probably be attached as some other driver, such as 90.Xr u3g 4 . 91