Thanks Mulyadi Santosa & Abhijit Pawar. My Target is not bring the Pkts to User Space which is costly. Trying to do that by using LKM. Seems to be; it is possible through skbuffers whose structure have the provision to identify the Protocol.
-Thnx, VKS On Thu, Nov 17, 2011 at 12:36 AM, Abhijit Pawar <[email protected]>wrote: > On 11/17/2011 12:03 PM, Mulyadi Santosa wrote: > >> On Wed, Nov 16, 2011 at 17:50, Kesava >> Srinivas<vunnavafuture@gmail.**com<[email protected]>> >> wrote: >> >>> HI Guys, >>> >>> I'm a Newbie to Linux Kernel Development. Need some Clarification in >>> understanding Net-Filter Hooks. >>> >>> Can I register only for the Necessary Packets [Ex: IPSEC etc...] from the >>> Net-Filters?? AFAIK ; Net-Filter Module send the Packets to the >>> Corresponding Module based on pre-defined HOOKS. Let us say; there are >>> Many >>> Packets reaching that Hooks; and if I am Interested only in some Packets >>> from Net-Filter module; can I do that ??? >>> >> something like: >> iptables [some rules] -j ULOG >> ? >> >> Check "man iptables" and see if that suits your need. FYI ULOG target >> uses netlink to deliver the packet to user space for further >> processing. >> >> >> >> Hi Kesava Srinivas, > If this is for any application in user space, I would recommend you take a > look at libPcap. > > Regards, > Abhijit Pawar > -- -VKS Masters,Computer Science&Engineering.
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