On Monday 20 August 2007, Steve Calfee wrote:
> You can buy a single dongle that both hosts connect to (I think as a
> network - it just does option 2, with the connection internal to the
> dongle). I google'd "net-linq" I think it is supported by the linux usb stuff.
See drivers/net/usb/Kconfig and look for the host-to-host cables.
That gives an network type link. I don't know if that 'net-linq'
cable has a driver, but I'd assume it does.
Unfortunately most of those chip vendors haven't provided enough
specs to support what I'd call rock-solid drivers. Most of the
chips have awkward failure/transition modes when one end of the
cable gets unplugged, even if the end still connected is the one
used to power the chip inside. They may even have rude failures
if you just throw a fat enough network load at them...
Fullspeed host-host cables with Prolific chips (PL2301/2302)
have those nasty failures. So do their high speed ones (PL2501),
and the high speed ones from ALI (M5632). Unfortunately that
means all the widely available cables I've seen are trouble...
I've got two adapters that have been solid; both are full-speed
only (nominal 12 Mbit/sec). I don't think either is sold any
longer ... one has a Net1080 chip, and I think some LapLink USB
cables ("gold"?) used them; maybe some Belkin ones too. The
other was a predecessor design, an early Belkin adapter, which
used two separate net2280 chips with an AVR microcontroller; the
design was licensed by eTEK to several companies.
Both those adapters have been rock solid "never misbehaved" in
my use/testing. If you can get some of those, go for it!
And there may be some others too ... but be careful, and test
them aggressively before you start to rely on them.
- Dave
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