cvs commit: src/sys/sys mbuf.h src/sys/kern uipc_mbuf.c
andre at freebsd.org
Tue Aug 30 09:50:07 GMT 2005
Maxim Konovalov wrote:
> > > 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?
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