2013-04-22 13:30:10

by Johannes Berg

[permalink] [raw]
Subject: Re: [PATCH] net-sysfs: Add entry for nl80211 interface type

On Wed, 2013-04-17 at 15:14 -0700, Paul Stewart wrote:
> I believe the documents for "iw" state explicitly that we shouldn't
> screen-scrape it?

Well, you specifically control your system. I'd also be happy to add
some (maybe a bit hidden) commands to print out _just_ the (numeric)
type, to aid scripting? All I'm trying to say with that though is that
you shouldn't rely on specific output formatting, particularly not with
scan results and "iw list" etc.

johannes




2013-04-22 13:55:01

by Paul Stewart

[permalink] [raw]
Subject: Re: [PATCH] net-sysfs: Add entry for nl80211 interface type

On Mon, Apr 22, 2013 at 6:29 AM, Johannes Berg
<[email protected]> wrote:
>
> On Wed, 2013-04-17 at 15:14 -0700, Paul Stewart wrote:
> > I believe the documents for "iw" state explicitly that we shouldn't
> > screen-scrape it?
>
> Well, you specifically control your system. I'd also be happy to add
> some (maybe a bit hidden) commands to print out _just_ the (numeric)
> type, to aid scripting?


No need. I already made the necessary changes in userspace to switch
to nl80211 to retrieve the iftype. Both Bing and I are done
proselytizing at this point. :-)

>
> All I'm trying to say with that though is that
> you shouldn't rely on specific output formatting, particularly not with
> scan results and "iw list" etc.
>
> johannes
>
>