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From: Bing Zhao <bingz@mellanox.com>
To: john.mcnamara@intel.com, marko.kovacevic@intel.com,
	viacheslavo@mellanox.com, orika@mellanox.com, matan@mellanox.com
Cc: shahafs@mellanox.com, rasland@mellanox.com, dev@dpdk.org,
	thomas@monjalon.net
Subject: [dpdk-dev] [PATCH v4] doc: update flow non-cached mode notes
Date: Wed, 22 Apr 2020 17:23:12 +0800	[thread overview]
Message-ID: <1587547392-380151-1-git-send-email-bingz@mellanox.com> (raw)
In-Reply-To: <1587449290-124383-1-git-send-email-bingz@mellanox.com>

This patch updates the MLX5 PMD and release notes documentations.
Adding the notes of the behavior change that rte flows organization
is switched into non-cached mode for applications.

Signed-off-by: Bing Zhao <bingz@mellanox.com>
Acked-by: Ori Kam <orika@mellanox.com>
---
v2: update the description in release notes.
v3: update the notes of rte_flow for application.
v4: update the descriptions.
---
 doc/guides/nics/mlx5.rst               | 14 ++++++++++++++
 doc/guides/rel_notes/release_20_05.rst |  1 +
 2 files changed, 15 insertions(+)

diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index 759d0ac..64822ae 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -1290,6 +1290,7 @@ Supported hardware offloads
 
 Notes for metadata
 ------------------
+
 MARK and META items are interrelated with datapath - they might move from/to
 the applications in mbuf fields. Hence, zero value for these items has the
 special meaning - it means "no metadata are provided", not zero values are
@@ -1300,6 +1301,19 @@ set, and we should allow to specify zero values as rte_flow parameters for the
 META and MARK items and actions. In the same time zero mask has no meaning and
 should be rejected on validation stage.
 
+Notes for rte_flow
+------------------
+
+Flows are not cached in the driver. When stopping a device port, all the flows
+created on this port from the application will be flushed automatically in
+the background.
+After stopping the device port, all flows on this port become invalid and
+not represented in the system.
+All references to these flows held by the application should be discarded
+directly but neither destroyed nor flushed.
+
+The application should re-create the flows as required after the port restart.
+
 Notes for testpmd
 -----------------
 
diff --git a/doc/guides/rel_notes/release_20_05.rst b/doc/guides/rel_notes/release_20_05.rst
index 1e5304d..cc53233 100644
--- a/doc/guides/rel_notes/release_20_05.rst
+++ b/doc/guides/rel_notes/release_20_05.rst
@@ -79,6 +79,7 @@ New Features
   * Added support for matching on IPv4 Time To Live and IPv6 Hop Limit.
   * Added support for creating Relaxed Ordering Memory Regions.
   * Added support for jumbo frame size (9K MTU) in Multi-Packet RQ mode.
+  * Removed flow rules caching for memory saving and compliance with ethdev API.
   * Optimized the memory consumption of flow.
 
 * **Updated the Intel ice driver.**
-- 
1.8.3.1


  parent reply	other threads:[~2020-04-22  9:23 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-13 14:55 [dpdk-dev] [PATCH v2] " Bing Zhao
2020-04-20 10:09 ` Ori Kam
2020-04-21  6:08 ` [dpdk-dev] [PATCH v3] " Bing Zhao
2020-04-21  6:39   ` Ori Kam
2020-04-22  2:09   ` Thomas Monjalon
2020-04-22  9:23   ` Bing Zhao [this message]
2020-04-22 11:07     ` [dpdk-dev] [PATCH v4] " Thomas Monjalon
2020-04-22 15:27     ` [dpdk-dev] [PATCH v5] " Bing Zhao
2020-05-05  9:39       ` Raslan Darawsheh

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