Re: [PATCH] hostapd: use eapol frames from ethernet device

[Johannes Berg <johannes@sipsolutions.net>]

[-- Attachment #1: Type: text/plain, Size: 1105 bytes --]

On Wed, 2007-08-15 at 01:46 +0300, Tomas Winkler wrote:

> Can you enlighten me and tell me why the monitor interface is
> preferable over management interface? I've probably got busy and
> missed the whole conversation.

Oh, I can name a number of reasons :)
 * magic needed to conjure it
 * munged prism2 header that nothing but hostapd/wpa_supplicant
   understands
 * special cases all over the code to stuff frames there

> I'm not so familiar with monitor interface but isn't it to be
> sniffing interface - everything goes up including data raw packets.

Well, in a way you're right. But please review the recent filter flags
patches I posted. And I'm using BPF to avoid seeing data frames other
than those I need.

> What if management frames needs decryption? I think this is 802.11w
> specs that defines that.

I thought radiotap injection could handle that, but it turns out that I
need to think again, especially about EAPOL frames. I'll address these
things in a reply to Jouni's mail, but that'll take a bit longer than
just going through and replying.

johannes

[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 190 bytes --]