From: Stephen Hemminger <stephen@networkplumber.org> To: dev@dpdk.org Cc: Stephen Hemminger <stephen@networkplumber.org>, Bruce Richardson <bruce.richardson@intel.com> Subject: [dpdk-dev] [PATCH v2] doc: add deprecation notice about changes to ethernet structures Date: Fri, 19 Jul 2019 09:56:31 -0700 Message-ID: <20190719165631.9235-1-stephen@networkplumber.org> (raw) In-Reply-To: <20190709150257.GB497@bricha3-MOBL.ger.corp.intel.com> Tell users about upcoming changes to rte_ether_addr and rte_ether_header. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Acked-by: Bruce Richardson <bruce.richardson@intel.com> --- v2 - reword and fix spelling doc/guides/rel_notes/deprecation.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index a7796f49b9fe..307f831cee60 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -82,3 +82,13 @@ Deprecation Notices to set new power environment if power environment was already initialized. In this case the function will return -1 unless the environment is unset first (using ``rte_power_unset_env``). Other function usage scenarios will not change. + +* net: the Ethernet address and header definitions will change + attributes. The Ethernet address struct will no longer be marked as + packed since the packed attribute is meaningless on a byte + array. The Ethernet header will be marked as aligned on a 2-byte + boundary and will no longer have the packed attribute. This allows + for efficient access on CPU architectures where unaligned access is + expensive. These changes should not impact normal usage because drivers + naturally align the Ethernet header on receive and all known + encapsulations preserve the alignment of the header. -- 2.20.1
next prev parent reply other threads:[~2019-07-19 16:56 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-07-09 14:58 [dpdk-dev] [PATCH] doc: deprecation notice for change of ether struct alignment Bruce Richardson 2019-07-09 14:59 ` Stephen Hemminger 2019-07-09 15:02 ` Bruce Richardson 2019-07-18 22:09 ` [dpdk-dev] [PATCH] doc: add deprecation notice about changes to ethernet structures Stephen Hemminger 2019-07-19 10:57 ` Bruce Richardson 2019-07-19 16:56 ` Stephen Hemminger [this message] 2019-07-23 11:28 ` [dpdk-dev] [PATCH v2] " Andrew Rybchenko 2019-07-31 10:46 ` Ferruh Yigit 2019-08-06 11:26 ` Thomas Monjalon 2019-08-10 20:22 ` Thomas Monjalon
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