From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ken-ichirou MATSUZAWA <chamaken@gmail.com>
Subject: Re: Confusion regarding nfct_query and nfct_callback_register
Date: Fri, 12 Feb 2016 16:30:32 +0900
Message-ID: <20160212073032.GA320@gmail.com>
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To: Gadre Nayan <gadrenayan@gmail.com>
Cc: netfilter@vger.kernel.org

 Hi,
 
On Fri, Feb 12, 2016 at 09:40:49AM +0530, Gadre Nayan wrote:
> Who is providing both these structures (struct nf_conntrack *ct, void

struct nf_conntrack is allocated by nfct_new(). You would find this
function called in __callback() in src/callback.c. Then it parses
nlmsg and updates nf_conntrack, calls callback function you
registered.

The __callback() is registerd as callback of which libnfnetlink will
call when conntrack nlmsg has received, at nfct_callback_register()
in src/conntrack/api.c.

# it seems that using nfct_callback_register, functions related to
# libnfnetlink, is discouraged for me.

I hope this is an answer you are looking for.
Thanks,