Date: Thu, 07 Feb 2008 13:30:21 -0800 From: Julian Elischer <julian@elischer.org> To: Vlad GALU <dudu@dudu.ro> Cc: freebsd-hackers@freebsd.org, Biks N <freebsd.dev@gmail.com> Subject: Re: retrive data from mbuf chain Message-ID: <47AB786D.8070403@elischer.org> In-Reply-To: <ad79ad6b0802071312q2538b3e0i3fb8d8c218ee5cfe@mail.gmail.com> References: <50cd4e5f0802071222w1222d901o3ce8770b5f5725b4@mail.gmail.com> <ad79ad6b0802071312q2538b3e0i3fb8d8c218ee5cfe@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Vlad GALU wrote: > 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. depends what he wants to do.. check /sys/sys/mbuf.h and /sys/kern/uipc_mbuf.c for all sorts of methods for handling mbufs. > >> thanks in advance :) >> _______________________________________________ >> freebsd-hackers@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-hackers >> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >> > >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?47AB786D.8070403>