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* [dpdk-dev] [PATCH] doc: announce ABI change for mbuf structure
@ 2016-07-19 14:01 Olivier Matz
  2016-07-19 14:40 ` Bruce Richardson
  2016-07-20  7:16 ` [dpdk-dev] [PATCH v2] " Olivier Matz
  0 siblings, 2 replies; 12+ messages in thread
From: Olivier Matz @ 2016-07-19 14:01 UTC (permalink / raw)
  To: dev; +Cc: jerin.jacob, thomas.monjalon

For 16.11, the mbuf structure will be modified implying ABI breakage.
Some discussions already took place here:
http://www.dpdk.org/dev/patchwork/patch/12878/

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
 doc/guides/rel_notes/deprecation.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index f502f86..2245bc2 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -41,3 +41,9 @@ Deprecation Notices
 * The mempool functions for single/multi producer/consumer are deprecated and
   will be removed in 16.11.
   It is replaced by rte_mempool_generic_get/put functions.
+
+* ABI changes are planned for 16.11 in the ``rte_mbuf`` structure: some
+  fields will be reordered to facilitate the writing of ``data_off``,
+  ``refcnt``, and ``nb_segs`` in one operation. Indeed, some platforms
+  have an overhead if the store address is not naturally aligned. The
+  useless ``port`` field will also be removed at the same occasion.
-- 
2.8.1

^ permalink raw reply	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2016-07-28 18:04 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-07-19 14:01 [dpdk-dev] [PATCH] doc: announce ABI change for mbuf structure Olivier Matz
2016-07-19 14:40 ` Bruce Richardson
2016-07-19 15:04   ` Olivier Matz
2016-07-19 15:07     ` Richardson, Bruce
2016-07-19 15:28       ` Olivier Matz
2016-07-20  7:16 ` [dpdk-dev] [PATCH v2] " Olivier Matz
2016-07-20  8:54   ` Ferruh Yigit
2016-07-27  8:33   ` Thomas Monjalon
2016-07-28 18:04     ` Thomas Monjalon
2016-07-27  9:34   ` Ananyev, Konstantin
2016-07-28  2:35   ` John Daley (johndale)
2016-07-28  2:39   ` Jerin Jacob

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