[dpdk-dev] [PATCH] doc: update API deprecation for device reset

[Qi Zhang]

Device reset may have the dependency, for example, a VF reset expects
PF ready, or a NIC function as a part of a SOC need to wait for other
parts of the system be ready, these are time-consuming tasks and will
block current thread.

So we claimed rte_eth_dev_reset as an async API, that makes things
easy for an application that what to reset the device from the interrupt
thread since typically a RTE_ETH_EVENT_INTR_RESET handler is invoked
in interrupt thread.

RFC patch:
http://patchwork.dpdk.org/patch/44513/

Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
---
 doc/guides/rel_notes/deprecation.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index bade1e4c4..3490aac87 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -95,3 +95,8 @@ Deprecation Notices
   - ``rte_pdump_set_socket_dir`` will be removed;
   - The parameter, ``path``, of ``rte_pdump_init`` will be removed;
   - The enum ``rte_pdump_socktype`` will be removed.
+
+* ethdev: In v19.02 ``rte_eth_dev_reset`` is claimed as an async API.
+  Application should not assume device reset is finished after
+  ``rte_eth_dev_reset`` return, it should always wait for a
+  RTE_ETH_EVENT_RESET_COMPLETE event and check the reset result.
-- 
2.13.6