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[204.195.22.127]) by smtp.gmail.com with ESMTPSA id b16sm22547067pfo.54.2019.07.09.08.00.00 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 09 Jul 2019 08:00:00 -0700 (PDT) Date: Tue, 9 Jul 2019 07:59:53 -0700 From: Stephen Hemminger To: Bruce Richardson Cc: dev@dpdk.org, thomas@monjalon.net, olivier.matz@6wind.com Message-ID: <20190709075953.3118d965@hermes.lan> In-Reply-To: <20190709145836.43493-1-bruce.richardson@intel.com> References: <20190709145836.43493-1-bruce.richardson@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH] doc: deprecation notice for change of ether struct alignment X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On Tue, 9 Jul 2019 15:58:36 +0100 Bruce Richardson wrote: > The ethernet address structure alignment will be changed to 2B alignment in > 19.11. Flag this to users. > > Impact is expected to be minimal for this change since ethernet addresses > are generally 2B aligned anyway. > > Signed-off-by: Bruce Richardson > --- > doc/guides/rel_notes/deprecation.rst | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst > index a7796f49b..7a04b9b09 100644 > --- a/doc/guides/rel_notes/deprecation.rst > +++ b/doc/guides/rel_notes/deprecation.rst > @@ -11,6 +11,11 @@ API and ABI deprecation notices are to be posted here. > Deprecation Notices > ------------------- > > +* net: The alignment of the ethernet address structure in DPDK, > + ``rte_ether_addr`` will be increased to two, i.e. 16-bit aligned, in the > + 19.11 release. This will only affect any data structures where an ethernet > + address is currently aligned on a single byte boundary. > + > * meson: The minimum supported version of meson for configuring and building > DPDK will be increased to v0.47.1 (from 0.41) from DPDK 19.05 onwards. For > those users with a version earlier than 0.47.1, an updated copy of meson We should also take the packed off of ether_header and ether_addr. Packed is meaningless on ether_addr anyway.