From: Siobhan Butler <siobhan.a.but...@intel.com> Added instructions for updating from DPDK 1.7.0 to 1.8.0
Signed-off-by: Siobhan Butler <siobhan.a.butler at intel.com> Signed-off-by: Bruce Richardson <bruce.richardson at intel.com> --- doc/guides/rel_notes/updating_apps.rst | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/doc/guides/rel_notes/updating_apps.rst b/doc/guides/rel_notes/updating_apps.rst index 034554d..4dbf268 100644 --- a/doc/guides/rel_notes/updating_apps.rst +++ b/doc/guides/rel_notes/updating_apps.rst @@ -7,6 +7,19 @@ may require some code updates to benefit from performance and user experience en DPDK 1.7 to DPDK 1.8 -------------------- +Note that in DPDK 1.8, the structure of the rte_mbuf has changed considerably from all previous versions. +It is recommended that users familiarize themselves with the new structure defined in the file rte_mbuf.h in the release package. +The follow are some common changes that need to be made to code using mbufs, following an update to DPDK 1.8: + +* Any references to fields in the pkt or ctrl sub-structures of the mbuf, need to be replaced with references to the field + directly from the rte_mbuf, i.e. buf->pkt.data_len should be replace by buf->data_len. + +* Any direct references to the data field of the mbuf (original buf->pkt.data) should now be replace by the macro rte_pktmbuf_mtod + to get a computed data address inside the mbuf buffer area. + +* Any references to the in_port mbuf field should be replace by references to the port field. + +NOTE: The above list is not exhaustive, but only includes the most commonly required changes to code using mbufs. Intel? DPDK 1.6 to DPDK 1.7 --------------------------- -- 2.1.0
