PGT(4) | Device Drivers Manual | PGT(4) |
pgt
—
Conexant/Intersil Prism GT Full-MAC IEEE 802.11a/b/g
wireless network device
pgt* at cardbus?
pgt* at pci?
The pgt
driver provides support for
Conexant/Intersil GT-series devices which can support the Full-Mac firmware,
using the ISL3877, ISL3880, and ISL3890 chips. The
pgt
driver will not (yet) work on similar devices
using the ISL3886 or similar chips which use the Soft-Mac firmware.
These are the modes the pgt
driver can
operate in:
The pgt
driver can be configured to use
hardware Wired Equivalent Privacy (WEP). It is strongly recommended that WEP
not be used as the sole mechanism to secure wireless communication, due to
serious weaknesses in it.
The pgt
driver can be configured at
runtime with ifconfig(8) or
on boot with
hostname.if(5).
The driver needs a set of firmware files which are loaded when an interface is brought up:
These firmware files are not free because Conexant refuses to grant distribution rights. In fact they have rebuffed thousands of attempts to start a dialogue on this issue. As a result, even though OpenBSD includes the driver, the firmware files cannot be included and users have to download these files on their own.
A prepackaged version of the firmware can be installed using fw_update(1).
The following cards are among those supported by the
pgt
driver:
Card | Chip | Bus |
3COM 3CRWE154G72 | ISL3880 | CardBus |
D-Link DWL-g650 A1 | ISL3890 | PCI |
I-O Data WN-G54/CB | ISL3890 | PCI |
I4 Z-Com XG-600 | ISL3890 | PCI |
I4 Z-Com XG-900 | ISL3890 | PCI |
Intersil PRISM Indigo | ISL3877 | PCI |
Intersil PRISM Duette | ISL3890 | PCI |
NETGEAR WG511 (Taiwanese, not Chinese) | ISL3890 | CardBus |
PLANEX GW-DS54G | ISL3890 | PCI |
SMC EZ Connect g 2.4GHz SMC2802W | ISL3890 | PCI |
SMC EZ Connect g 2.4GHz SMC2835W-v2 | ISL3890 | CardBus |
SMC 2802Wv2 | ISL3890 | PCI |
Soyo Aerielink | ISL3890 | CardBus |
ZyXEL ZyAIR G-100 | ISL3890 | CardBus |
The following example scans for available networks:
# ifconfig pgt0 scan
The following hostname.if(5) example configures pgt0 to join network “mynwid”, using WEP key “mywepkey”, obtaining an IP address using DHCP:
nwid mynwid nwkey mywepkey dhcp
The following hostname.if(5) example creates a host-based access point on boot:
mediaopt hostap nwid mynwid nwkey mywepkey inet 192.168.1.1 255.255.255.0
arp(4), cardbus(4), ifmedia(4), intro(4), netintro(4), pci(4), hostname.if(5), hostapd(8), ifconfig(8)
The pgt
driver first appeared in
OpenBSD 4.0.
The pgt
driver was originally written for
FreeBSD by Brian
Fundakowski, and then rewritten for OpenBSD
by Marcus Glocker and Claudio
Jeker.
Host AP mode doesn't support power saving. Clients attempting to use power saving mode may experience significant packet loss (disabling power saving on the client will fix this).
March 7, 2016 | OpenBSD-6.4 |