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From: Jiawei Wang <jiaweiw@nvidia.com>
To: orika@nvidia.com, viacheslavo@nvidia.com, matan@nvidia.com,
thomas@monjalon.net
Cc: dev@dpdk.org, rasland@nvidia.com, asafp@nvidia.com
Date: Fri, 9 Oct 2020 16:50:35 +0300
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Subject: [dpdk-dev] [PATCH 09/10] doc: add the sample flow limitation
description
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Add description about the sample flow limitation.
Sample Flow supports in NIC-Rx and E-Switch domains.
Due to Metadata register c0 is deleted while doing the loopback,
so that only support forward the sampling packet into
E-Switch manager port, no additional action support in sample flow.
Signed-off-by: Jiawei Wang <jiaweiw@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
doc/guides/nics/mlx5.rst | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index b0614ae..166310f 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -311,6 +311,12 @@ Limitations
for some NICs (such as ConnectX-6 Dx and BlueField 2).
The capability bit ``scatter_fcs_w_decap_disable`` shows NIC support.
+- Sample flow:
+
+ - Supports ``RTE_FLOW_ACTION_TYPE_SAMPLE`` action only within NIC Rx and E-Switch steering domain.
+ - The E-Switch Sample flow must have the eswitch_manager VPORT destination (PF or ECPF) and no additional actions.
+ - For ConnectX-5, the ``RTE_FLOW_ACTION_TYPE_SAMPLE`` is typically used as first action in the E-Switch egress flow if with header modify or encapsulation actions.
+
Statistics
----------
--
1.8.3.1