[systemd-devel] Match section of .link file not working

[Andrei Borzenkov]

В Sun, 24 Aug 2014 21:28:51 +0200
Simon Peeters <peeters.simon at gmail.com> пишет:

> 2014-08-24 20:29 GMT+02:00 Andrei Borzenkov <arvidjaar at gmail.com>:
> > В Sun, 24 Aug 2014 09:19:13 +0200
> > Simon Peeters <peeters.simon at gmail.com> пишет:
> >
> >> >> Ok, so there is only one problem now:
> >> >> ID_PATH is the same for all my vif interfaces, and i need to select
> >> >> only one of them.
> >> >>
> >> >
> >> > Please show "udevadm info -q all" for each interface.
> >>
> >> P: /devices/ocp/47400000.usb/47401c00.usb/musb-hdrc.1.auto/usb2/2-1/2-1:1.0/net/wlan0
> >> P: /devices/ocp/47400000.usb/47401c00.usb/musb-hdrc.1.auto/usb2/2-1/2-1:1.0/net/wlv1
> >> P: /devices/ocp/47400000.usb/47401c00.usb/musb-hdrc.1.auto/usb2/2-1/2-1:1.0/net/wlv2
> >>
> >> wlv2 is a client and needs a stable mac, otherwise the dhcp f*cs up.
> >> wlv1 is an acesspoint, and needs a mac different from wlv2. (This
> >> should probably also be stable, but i can live with random for this
> >> one.)
> >
> > So you have single device that exports multiple interfaces.
> No, and yes. The wireless adaptor actually only exprts phy0. The
> kernel then by default creates wlan0.
> Then i use :
> # iw phy phy0 interface add wlv1 type __ap
> # iw phy phy0 interface add wlv2 type station
> To create the 2 virtual interfaces that I use. The only real
> difference is the name I give them. (and the type in this case)

Hmm ... if you use explicit command to create them, you can also assign
whatever MAC is required as part of interface creation, right? Or do I
miss something here?

> 
> > To
> > distinguish between them driver would need to provide some persistent
> > information about each interface. I understand that dev_id (or
> > dev_port) is supposed to be it, but as of now almost no driver actually
> > bothers to set them.
> I think dev_id and dev_port are already used, but not really applicable here.
> 
> > I wonder how is it possible to match such devices at all ...
> Me to.
> >
> >> (yes, the wlv3 was just for testing, wlv1 and wlv2 are the real ones)
> >
> > You mean wlan0?
> no, wlan0 is the original device, I use wlv3 as an example in the
> first mail, but was ommited in this reply because I already deleted
> it)