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 v5] doc: update flow non-cached mode notes
Date: Wed, 22 Apr 2020 23:27:15 +0800 [thread overview]
Message-ID: <1587569235-444742-1-git-send-email-bingz@mellanox.com> (raw)
In-Reply-To: <1587547392-380151-1-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.
v5: update the format of lines splitting.
---
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..fd5b697 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 8c71dc1..e91fe14 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
next prev parent reply other threads:[~2020-04-22 15:27 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 ` [dpdk-dev] [PATCH v4] " Bing Zhao
2020-04-22 11:07 ` Thomas Monjalon
2020-04-22 15:27 ` Bing Zhao [this message]
2020-05-05 9:39 ` [dpdk-dev] [PATCH v5] " Raslan Darawsheh
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