retrive data from mbuf chain

[Sam Leffler]

Biks N 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?
>   

man 9 mbuf; look for m_copydata.

    Sam