Identify Beacon Frame

[Gunjan Mehta]

Avinash,

Ya m talking about the WLAN.
can you just throw some more light on cfg802.11 handlers.

On Fri, Aug 28, 2015 at 11:24 PM, Avinash Patil <avinashapatil at gmail.com>
wrote:

> Hi Gunjan,
>
> Are you talking about WLAN beacon frames? If so, you can you cfg80211
> handlers to register management frames and once frame is received
> parse frame type/subtype to check if its beacon.
> I dont think beacon frames are delievered to netdev.
>
> Thanks,
> Avinash
>
> On Fri, Aug 28, 2015 at 10:51 AM, Gunjan Mehta <gunjanmehta08 at gmail.com>
> wrote:
> > Then how do i capture the beacon frames?
> >
> > On Fri, Aug 28, 2015 at 10:40 PM, Jeff Haran <Jeff.Haran at citrix.com>
> wrote:
> >>
> >>
> >>
> >>
> >>
> >> From: kernelnewbies-bounces at kernelnewbies.org
> >> [mailto:kernelnewbies-bounces at kernelnewbies.org] On Behalf Of Gunjan
> Mehta
> >> Sent: Friday, August 28, 2015 9:21 AM
> >> To: kernelnewbies; netfilter-devel at vger.kernel.org
> >> Subject: Identify Beacon Frame
> >>
> >>
> >>
> >> Hi All,
> >>
> >>
> >>
> >> I am new to kernel development. I am writing a kernel module that
> captures
> >> packet at the netfilter pre - routing hook.
> >>
> >>
> >>
> >> I only want to capture the BEACON FRAME.
> >>
> >>
> >>
> >> I have few queries:
> >>
> >>
> >>
> >> 1>When the beacon frame comes to receiving machine do the sk_buff gets
> >> allocated?
> >>
> >> 2> How can i identify the beacon frame at the pre routing hook?
> >>
> >> 3> Beacon frame consist of a string for authentication of client with
> the
> >> server, can i use sk_buff pointers to get access to that string, if
> sk_buff
> >> is allocated?
> >>
> >>
> >>
> >> Regards
> >>
> >> Gunjan
> >>
> >>
> >>
> >> These beacon frames do not appear to be IP packets. If that is true, I
> >> don’t think you are going to see them in any netfilter hooks.
> >>
> >>
> >>
> >> Jeff Haran
> >>
> >>
> >
> >
> >
> > _______________________________________________
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> >
>
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