On Tue, Nov 14, 2017 at 06:09:35AM +0100, Thomas Monjalon wrote:
> > > >> Update types of variables to correspond to nb_segs type change from
> > > >> uint8_t to uint16_t.
> > > >>
> > > >> Fixes: 97cb466d65c9 ("mbuf: use 2 bytes for port and nb segments")
> > > >> Cc: [email protected]
> > > >>
> > > >> Signed-off-by: Ilya V. Matveychikov <[email protected]>
> > Acked-by: Olivier Matz <[email protected]>
>
> Is there a real benefit to get it in 17.11?
Without this patch:
- cloning a mbuf with more than 255 segments will create an mbuf with an
invalid number of segments.
- chaining mbufs with rte_pktmbuf_chain() will return an error if the
resulting mbuf has more than 255 segments.
> Is there a risk?
It is not so critical, since manipulating mbufs with a large number of
segments is a very specific use case.
But the risk seems low, I think we can put it in 17.11.
Olivier
