NAME
mos —
MosChip MCS7730/7830/7832 10/100 USB
Ethernet device
SYNOPSIS
mos* at uhub?
DESCRIPTION
The mos driver provides support for USB
Ethernet adapters based on the MosChip MCS7730, MCS7830 and MCS7832 USB 2.0
chipsets, including the following:
- Delock 61147
- Sitecom LN-030
- Syba SY-U2LAN
All adapters operate with either USB 1.x or USB 2.0 controllers, though performance with 1.x controllers is limited since the USB 1.x standard specifies a maximum transfer speed of 12Mbps. Users with USB 1.x controllers should therefore not expect to actually achieve 100Mbps speeds with these devices.
A 64-bit multicast hash table is supported, single perfect filter entry for the station address, all-multicast mode, and promiscuous mode. Packets are received and transmitted over separate USB bulk transfer endpoints.
The mos driver supports the following
media types:
- autoselect
- Enable autoselection of the media type and options (this is the default). The user can manually override the autoselected mode by adding media options to the appropriate hostname.if(5) file.
- 10baseT
- Set 10Mbps operation.
- 100baseTX
- Set 100Mbps (Fast Ethernet) operation.
The mos driver supports the following
media options:
- full-duplex
- Force full-duplex operation.
- half-duplex
- Force half-duplex operation.
For more information on configuring this device, see ifconfig(8).
DIAGNOSTICS
- mos0: watchdog timeout
- A packet was queued for transmission and a transmit command was issued, however the device failed to acknowledge the transmission before a timeout expired.
- mos0: no memory for rx list
- The driver failed to allocate an mbuf for the receiver ring.
SEE ALSO
arp(4), ifmedia(4), intro(4), netintro(4), usb(4), hostname.if(5), ifconfig(8)
MosChip India, http://www.moschip.com.
HISTORY
The mos device driver first appeared in
OpenBSD 4.5.
AUTHORS
The mos driver was written by
Johann Christian Rode
<jcrode@gmx.net>.