On Thu, 16 Nov 2017 18:05:35 +0400 Ilya Matveychikov <matvejchi...@gmail.com> wrote:
> Fixes: 139debc42dc0 ("mbuf: move chaining from ip_frag library") > Cc: simon.kagst...@netinsight.net > > Signed-off-by: Ilya V. Matveychikov <matvejchi...@gmail.com> > --- > lib/librte_mbuf/rte_mbuf.h | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h > index ce8a05ddf..2126dc94b 100644 > --- a/lib/librte_mbuf/rte_mbuf.h > +++ b/lib/librte_mbuf/rte_mbuf.h > @@ -1828,9 +1828,12 @@ static inline int rte_pktmbuf_chain(struct rte_mbuf > *head, struct rte_mbuf *tail > head->nb_segs += tail->nb_segs; > head->pkt_len += tail->pkt_len; > > - /* pkt_len is only set in the head */ > + /* nb_segs and pkt_len are only set in the head */ > + tail->nb_segs = 1; > tail->pkt_len = tail->data_len; > > + __rte_mbuf_sanity_check(head, 1); > + > return 0; > } My understanding is that nb_segs and pkt_len are only valid in head. For other packets in the chain nb_segs and pkt_len can be anything.