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Message-Id: <20230117085947.2176464-6-vladimir.oltean@nxp.com>
Date:   Tue, 17 Jan 2023 10:59:40 +0200
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Michal Kubecek <mkubecek@...e.cz>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        Xiaoliang Yang <xiaoliang.yang_1@....com>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Rui Sousa <rui.sousa@....com>,
        Ferenc Fejes <ferenc.fejes@...csson.com>,
        Pranavi Somisetty <pranavi.somisetty@....com>,
        Harini Katakam <harini.katakam@....com>,
        Colin Foster <colin.foster@...advantage.com>,
        UNGLinuxDriver@...rochip.com,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>
Subject: [PATCH v3 net-next 05/12] docs: ethtool: document ETHTOOL_A_STATS_SRC and ETHTOOL_A_PAUSE_STATS_SRC

Two new netlink attributes were added to PAUSE_GET and STATS_GET and
their replies. Document them.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
v2->v3:
- adapt to renaming of constants
- add a single kernel-doc reference to enum ethtool_mac_stats_src
  (second one gives warning apparently)
v1->v2: patch is new

 Documentation/networking/ethtool-netlink.rst | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst
index 31413535dce5..1626e863eec9 100644
--- a/Documentation/networking/ethtool-netlink.rst
+++ b/Documentation/networking/ethtool-netlink.rst
@@ -1092,8 +1092,18 @@ Request contents:
 
   =====================================  ======  ==========================
   ``ETHTOOL_A_PAUSE_HEADER``             nested  request header
+  ``ETHTOOL_A_PAUSE_STATS_SRC``          u32     source of statistics
   =====================================  ======  ==========================
 
+``ETHTOOL_A_PAUSE_STATS_SRC`` is optional. It takes values from:
+
+.. kernel-doc:: include/uapi/linux/ethtool.h
+    :identifiers: ethtool_mac_stats_src
+
+If absent from the request, stats will be provided with
+an ``ETHTOOL_A_PAUSE_STATS_SRC`` attribute in the response equal to
+``ETHTOOL_MAC_STATS_SRC_AGGREGATE``.
+
 Kernel response contents:
 
   =====================================  ======  ==========================
@@ -1508,6 +1518,7 @@ Request contents:
 
   =======================================  ======  ==========================
   ``ETHTOOL_A_STATS_HEADER``               nested  request header
+  ``ETHTOOL_A_STATS_SRC``                  u32     source of statistics
   ``ETHTOOL_A_STATS_GROUPS``               bitset  requested groups of stats
   =======================================  ======  ==========================
 
@@ -1516,6 +1527,8 @@ Kernel response contents:
  +-----------------------------------+--------+--------------------------------+
  | ``ETHTOOL_A_STATS_HEADER``        | nested | reply header                   |
  +-----------------------------------+--------+--------------------------------+
+ | ``ETHTOOL_A_STATS_SRC``           | u32    | source of statistics           |
+ +-----------------------------------+--------+--------------------------------+
  | ``ETHTOOL_A_STATS_GRP``           | nested | one or more group of stats     |
  +-+---------------------------------+--------+--------------------------------+
  | | ``ETHTOOL_A_STATS_GRP_ID``      | u32    | group ID - ``ETHTOOL_STATS_*`` |
@@ -1577,6 +1590,11 @@ Low and high bounds are inclusive, for example:
  etherStatsPkts512to1023Octets 512  1023
  ============================= ==== ====
 
+``ETHTOOL_A_STATS_SRC`` is optional. Similar to ``PAUSE_GET``, it takes values
+from ``enum ethtool_mac_stats_src``. If absent from the request, stats will be
+provided with an ``ETHTOOL_A_STATS_SRC`` attribute in the response equal to
+``ETHTOOL_MAC_STATS_SRC_AGGREGATE``.
+
 PHC_VCLOCKS_GET
 ===============
 
-- 
2.34.1

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