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@xxxxxxxxx> wrote: > Then how do i capture the beacon frames? > > On Fri, Aug 28, 2015 at 10:40 PM, Jeff Haran <Jeff.Haran@xxxxxxxxxx> wrote: >> >> >> >> >> >> From: kernelnewbies-bounces@xxxxxxxxxxxxxxxxx >> [mailto:kernelnewbies-bounces@xxxxxxxxxxxxxxxxx] On Behalf Of Gunjan Mehta >> Sent: Friday, August 28, 2015 9:21 AM >> To: kernelnewbies; netfilter-devel@xxxxxxxxxxxxxxx >> 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 >> >> > > > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
