From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pablo de Lara Subject: =?utf-8?q?=5BPATCH_v2_2/2=5D_doc=3A_updating_from_1=2E?= =?utf-8?q?7_to_1=2E8_release_note?= Date: Thu, 18 Dec 2014 15:48:47 +0000 Message-ID: <1418917727-22921-3-git-send-email-pablo.de.lara.guarch@intel.com> References: <1418914328-22145-1-git-send-email-siobhan.a.butler@intel.com> <1418917727-22921-1-git-send-email-pablo.de.lara.guarch@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable To: dev-VfR2kkLFssw@public.gmane.org Return-path: In-Reply-To: <1418917727-22921-1-git-send-email-pablo.de.lara.guarch-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org Sender: "dev" From: Siobhan Butler Added instructions for updating from DPDK 1.7.0 to 1.8.0 Signed-off-by: Siobhan Butler Signed-off-by: Bruce Richardson --- 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_note= s/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 performanc= e and user experience en DPDK 1.7 to DPDK 1.8 -------------------- =20 +Note that in DPDK 1.8, the structure of the rte_mbuf has changed conside= rably from all previous versions. +It is recommended that users familiarize themselves with the new structu= re 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 mb= ufs, following an update to DPDK 1.8: + +* Any references to fields in the pkt or ctrl sub-structures of the mb= uf, 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->p= kt.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 refere= nces to the port field. + +NOTE: The above list is not exhaustive, but only includes the most commo= nly required changes to code using mbufs. =20 Intel=C2=AE DPDK 1.6 to DPDK 1.7 --------------------------- --=20 2.1.0