Date: Tue, 30 Aug 2005 07:05:18 +0400 (MSD) From: Maxim Konovalov <maxim@macomnet.ru> To: Andre Oppermann <andre@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/sys mbuf.h src/sys/kern uipc_mbuf.c Message-ID: <20050830070415.D48618@mp2.macomnet.net> In-Reply-To: <43136DEB.B59F9276@freebsd.org> References: <200508292015.j7TKFYuW094247@repoman.freebsd.org> <43136DEB.B59F9276@freebsd.org>
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Hi, [...] > > Add m_copymdata(struct mbuf *m, struct mbuf *n, int off, int len, > > int prep, int how). > > > > Copies the data portion of mbuf (chain) n starting from offset off > > for length len to mbuf (chain) m. Depending on prep the copied > > data will be appended or prepended. The function ensures that the > > mbuf (chain) m will be fully writeable by making real (not refcnt) > > copies of mbuf clusters. For the prepending the function returns > > a pointer to the new start of mbuf chain m and leaves as much > > leading space as possible in the new first mbuf. > > This one is primarily for the new TCP reassembly which makes very > efficient use of mbufs. Is it feasible to document all these new mbuf functions in mbuf.9? TIA. -- Maxim Konovalov
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