Tell users about upcoming changes to rte_ether_addr and rte_ether_header. Signed-off-by: Stephen Hemminger <step...@networkplumber.org> Acked-by: Bruce Richardson <bruce.richard...@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
