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Date: Thu, 7 Feb 2008 23:12:00 +0200
From: "Vlad GALU" <dudu@dudu.ro>
To: "Biks N" <freebsd.dev@gmail.com>
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References: <50cd4e5f0802071222w1222d901o3ce8770b5f5725b4@mail.gmail.com>
Cc: freebsd-hackers@freebsd.org
Subject: Re: retrive data from mbuf chain
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On 2/7/08, Biks N <freebsd.dev@gmail.com> wrote:
> Hi,
>
> I am new to FreeBSD kernel programming.
>
> Currently I am trying to work on mbuf data manupulation.
>
> >From my understanding: data (payload) is stored into one or more mufs
> which are chained together through m_next pointer.
>
> Now, I need to retrive all data in mbuf chain ( mbufs linked by
> m_next). I am working ip_output() in netinet/ip_output.c
>
> Does there exist inbuilt function/macro to retrive all the data in mbuf chain?

   I may be wrong on this one, but according to my understanding, a
m_pullup() followed by a mtod() should do the trick.

>
> thanks in advance :)
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-- 
Mahnahmahnah!