Re: [Linux-ATM-General] Sync status in userspace

[chas w. - C. <ch...@cm...>]

this patch added event monitoring for the carrier/line status.  it also
fixed some assumptions about the carrier state.  carrier is now assumed
to be UP (it used to be not well defined) unless the hardware is
capable of updating the state.  userspace can determine the carrier
status by examining /sys/class/atm/<device instance>/carrier.  we dont
have an ioctl or ethtool type interface to get this data.

On Mon, 13 Sep 2010 09:30:16 +0200
Karl Hiramoto <ka...@hi...> wrote:

>   On 13/09/2010 6:32, Philip Prindeville wrote:
> >
> >   I think a few weeks ago I saw a patch fly by on linux-kernel on
> > signaling sync status from the DSL driver to an upper layer, with
> > the remark that it would be useful to userspace. There's something
> > there.
> >
> > Ciao.
> > Vincent.
> >
> > I'm not on linux-kernel but I'll check gmane... Thanks.
> >
> > Actually, just checked but couldn't find it.  If you remember who
> > wrote it or what the subject was, that would help a lot...
> >
> >
> I wrote the patch.  It should be in this list's archives and the
> netdev list at the beginning of july.  The patches are in mainline
> now, but only work on br2684 VCs so it passes the LOWER_UP flag.
> 
> The patches are in mainline now see commits  
> 49d49106fc6cbb48c832aa58e3e6cee8b49d5e8f, 
> 7313bb8f3dd6e28bcf9c42adfd54a5cf9a4949e0, 
> 005066122b58f3b350736cc896af46aea2e32d23,  and others for each device.
> 
> --
> Karl