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@gmail.com> wrote:
Then how do i capture the beacon frames?
On Fri, Aug 28, 2015 at 10:40 PM, Jeff Haran <Jeff.Haran@citrix.com> wrote:
From: kernelnewbies-bounces@kernelnewbies.org [mailto:kernelnewbies-bounces@kernelnewbies.org] On Behalf Of Gunjan Mehta Sent: Friday, August 28, 2015 9:21 AM To: kernelnewbies; netfilter-devel@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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