On Mon, Aug 13, 2012 at 01:47:01PM -0700, Adrian Chadd wrote: > Hi, > > On 11 August 2012 06:35, David Duchscher <da...@tamu.edu> wrote: > > Greetings, > > > > I have a need to turn off the link of an ethernet port on a Intel nic. The > > issue is not a big deal but one we would like to solve. we have no way of > > signaling an upstream router that a path is down but via turning off the > > link of the ethernet port. This would only be used when something goes > > wrong. The hope is that we could automate some problems and handle other > > situations remotely avoiding having to visit the system in person. > > > > Any thoughts? We can modify the system so if it means modifying the driver > > or some other code, I am willing to try. Just need a little direction. > > Marius talked about doing this. Maybe it's time we added it as a > device option, so people can have the PHY disabled when the NIC is > brought down? >
I'm working on adding support to mii(4) for powering down PHYs when the network interface is down, but as you have noticed this non- trivial to get right, i.e. so they actually come out of power down mode again when bringing up the interface regardless of the media options used. We also clearly need a way to disable this behavior for the known-broken PHYs. This is orthogonal to the 1 and 10 Gigabit Intel Ethernet drivers so as these don't take advantage of mii(4). Some time ago someone posted patches to net@ implementing/activating powering down the PHYs when these interfaces are down though. Marius _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
