[dpdk-dev] [PATCH] doc: add deprecation notice about changes to ethernet structures

[Stephen Hemminger]

Tell users about upcoming changes to rte_ether_addr and
rte_ether_header.

Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
 doc/guides/rel_notes/deprecation.rst | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index a7796f49b9fe..9c20a47b3e4c 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -82,3 +82,12 @@ 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 defintions will change attributes.
+  The Ethernet address struct will no longer be marked as packed since
+  since the packed attribute is meaningless on a byte array.
+  The Etherne header will be marked as aligned on a 2 byte boundary (and
+  no longer packed).  This allows for efficient access on all CPU's.
+  These changes should not impact normal usage drivers naturally
+  align the Ethernet header on receive, and almost every encapsulation
+  preserves the alignment.
-- 
2.17.1