[dpdk-dev] [PATCH v3] mbuf: support dynamic fields and flags

[Thomas Monjalon]

24/10/2019 17:30, Stephen Hemminger:
> On Thu, 24 Oct 2019 10:13:37 +0200
> Olivier Matz <olivier.matz at 6wind.com> wrote:
> 
> > +/**
> > + * Copy dynamic fields from msrc to mdst.
> > + *
> > + * @param mdst
> > + *   The destination mbuf.
> > + * @param msrc
> > + *   The source mbuf.
> > + */
> > +static inline void
> > +rte_mbuf_dynfield_copy(struct rte_mbuf *mdst, const struct rte_mbuf *msrc)
> > +{
> > +	memcpy(&mdst->dynfield1, msrc->dynfield1, sizeof(mdst->dynfield1));
> > +}
> 
> Since size is fixed and both are of same type, why not just assign structures?

Because they are not structures?
	uint64_t dynfield1[2];