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Date: Mon, 1 Feb 2010 12:02:07 +0100
Message-ID: <3930e0781002010302r3758968cl5f010bd7a585cca4@mail.gmail.com>
From: Lukasz Jaroszewski <lvj@nietykalni.org>
To: freebsd-hackers@freebsd.org
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Subject: PFIL: how to get tcp/ip fields from mbuf
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Hello,
I am wondering about most elegant and proper way to get IP header
fields from mbuf, using PFILs. I have read=A0Murat Balaban paper on
PFIL_HOOKS where I found some example function. Question is how can I
access IP header field in such manner.

static int
hisar_chkinput(void *arg, struct mbuf **m, struct ifnet *ifp, int dir,
struct inpcb *inp)
{
        in_bytes +=3D (*m)->m_len;
        return 0;
}
Regards
LVJ.