From: Gregory Etelson <getelson@nvidia.com>
To: <dev@dpdk.org>, <getelson@nvidia.com>
Cc: <rasland@nvidia.com>, <thomas@monjalon.net>,
Matan Azrad <matan@nvidia.com>,
Viacheslav Ovsiienko <viacheslavo@nvidia.com>
Subject: [PATCH v2] doc: add mlx5 PMD flex item documentation
Date: Tue, 16 Nov 2021 17:45:14 +0200 [thread overview]
Message-ID: <20211116154514.4029-1-getelson@nvidia.com> (raw)
In-Reply-To: <20211116145139.837-1-getelson@nvidia.com>
Describe firmware configuration requirements.
List mlx5 hardware and PMD limitations.
Signed-off-by: Gregory Etelson <getelson@nvidia.com>
---
v2: Style fixes.
---
doc/guides/nics/mlx5.rst | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index 552e06c0db..855ee9a119 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -494,6 +494,17 @@ Limitations
from the reference "Clock Queue" completions,
the scheduled send timestamps should not be specified with non-zero MSB.
+- Flex item API:
+
+ - Hardware support: BlueField 2.
+ - Flex item is supported on PF only.
+ - Hardware limits ``header_length_mask_width`` up to 6 bits.
+ - Firmware supports 8 global sample fields.
+ Each flex item allocates non-shared sample fields from that pool.
+ - Supported flex item can have 1 input link - ``eth`` or ``udp`` and up to 2 output links - ``ipv4`` or ``ipv6``.
+ - Flex item fields (``next_header``, ``next_protocol``, ``samples``) do not participate in RSS hash functions.
+ - In flex item configuration, ``next_header.field_base`` value must be byte aligned (multiple of 8).
+
Statistics
----------
@@ -1260,6 +1271,11 @@ Below are some firmware configurations listed.
REAL_TIME_CLOCK_ENABLE=1
+- enable dynamic flex parser for flex item::
+
+ FLEX_PARSER_PROFILE_ENABLE=4
+ PROG_PARSE_GRAPH=1
+
Linux Prerequisites
-------------------
--
2.33.1
next prev parent reply other threads:[~2021-11-16 15:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-16 14:51 [PATCH] " Gregory Etelson
2021-11-16 15:05 ` Thomas Monjalon
2021-11-16 15:45 ` Gregory Etelson [this message]
2021-11-22 10:42 ` [PATCH v2] " Slava Ovsiienko
2021-11-23 9:29 ` [PATCH v3] " Gregory Etelson
2021-11-23 17:35 ` Ferruh Yigit
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