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.
