diff options
authorZhiyong Yang <>2017-08-07 20:42:30 +0800
committerThomas Monjalon <>2017-08-08 11:32:49 +0200
commit2a2d0d181c80279c1bcbd6892445dcaffef11783 (patch)
parenta9208dd58ab218871a151c80c66901f4f80376f5 (diff)
doc: announce ethdev port id range increase
This is an API/ABI change notice for DPDK 17.11 announcing the redefinition of port_id. port_id is currently defined as uint8_t, which is limited to the range 0 to 255. A larger range is required for vdev scalability. It is necessary for a redefinition of port_id to extend it from 1 bytes to 2 bytes. All ethdev APIs and usages related to port_id will be changed at the same time. Signed-off-by: Zhiyong Yang <> Acked-by: Jianfeng Tan <> Acked-by: Yuanhan Liu <> Acked-by: Jerin Jacob <> Acked-by: Remy Horton <> Acked-by: Shahaf Shuler <>
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 74e4ce4..9a5f6b8 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -76,6 +76,12 @@ Deprecation Notices
done by the EAL and not by the ``ethdev`` layer anymore. Users relying on this
flag being present only have to remove their checks to follow the change.
+* ABI/API changes are planned for 17.11 in all structures which include port_id
+ definition such as "rte_eth_dev_data", "rte_port_ethdev_reader_params",
+ "rte_port_ethdev_writer_params", and so on. The definition of port_id will be
+ changed from 8 bits to 16 bits in order to support more than 256 ports in
+ DPDK. All APIs which have port_id parameter will be changed at the same time.
* librte_table: The ``key_mask`` parameter will be added to all the hash tables
that currently do not have it, as well as to the hash compute function prototype.
The non-"do-sig" versions of the hash tables will be removed