cvs commit: src/sys/sys mbuf.h src/sys/kern uipc_mbuf.c

Maxim Konovalov maxim at
Tue Aug 30 03:05:21 GMT 2005


> >   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?


Maxim Konovalov

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