From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Young Subject: Re: BPF code generation for radiotap Date: Fri, 11 May 2007 18:52:04 -0500 Message-ID: <20070511235204.GC20770@che.ojctech.com> References: <20070511231511.GB20770@che.ojctech.com> <46450124.1010809@alum.mit.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <46450124.1010809-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> Sender: radiotap-admin-rN9S6JXhQ+WXmMXjJBpWqg@public.gmane.org Errors-To: radiotap-admin-rN9S6JXhQ+WXmMXjJBpWqg@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: radiotap-eZodSLrBbDpBDgjK7y7TUQ@public.gmane.org List-Id: radiotap@radiotap.org On Fri, May 11, 2007 at 04:49:56PM -0700, Guy Harris wrote: > David Young wrote: > >Can I help someone with BPF know-how to write a radiotap code generator? > >It would be great if we could use BPF to filter out packets with, say, > >an RSSI below a certain threshold. > > That will be possible only if the RSSI can be found without a loop, or > if you're willing to have all the filtering done in userland. The Right now, all radiotap fields can be found without a loop. Dave -- David Young OJC Technologies dyoung-eZodSLrBbDpBDgjK7y7TUQ@public.gmane.org Urbana, IL * (217) 278-3933