On Fri, 06 Mar 2009 11:04:40 +0100 Helge Hafting <[email protected]> wrote:
> Daniel Benoy wrote: > > I'm working on a script that will detect which network interfaces > > are connected and mess with the routing accordingly, but I'm having > > trouble detecting whether my USB ethernet gadget connection is up > > or down. > > > > ---- > > ethtool when it's up: > > lisa:~# ethtool usb0 > > Settings for usb0: > > Link detected: yes > > > > ethtool when it's down: > > lisa:~# ethtool usb0 > > Settings for usb0: > > Link detected: yes > > ---- > > > > Unlike on the host side, the usb0 interface doesn't appear and > > disappear, allowing udev scripts to bring up/down the interface. > > > > Anyone know if there's a way to detect that a network connection > > has actually been established? > > > > Is this necessary? > Just set a higher metric on usb0, then routes thorough eth0 will be > preferred when available. The default route through usb0 will only be > used as a last resort when there is no other way. > > Such a setup works very well on my laptop. It doesn't on the > freerunner yet, because the "ip" utility in busybox currently can't > set metrics. But port that (or use debian with its binary ip utility) > and you'll be fine. > > Helge Hafting You should be able to find iproute2 for freerunner... I know I've got an ipk of 2.2.26 at http://newkirk.us/om - my "OM stuff" attic, but I think it's in the feeds as well. Apart from that, I dug into this exact situation before, including dealing with usb0, wrote an article about it at my blog. (http://jthinks.com/better-freerunner-networking) You can use the standard 'route' command to set metrics, so iproute2 isn't required. j _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
