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Message-Id: <20250103-feature_poe_port_prio-v4-12-dc91a3c0c187@bootlin.com>
Date: Fri, 03 Jan 2025 22:13:01 +0100
From: Kory Maincent <kory.maincent@...tlin.com>
To: Andrew Lunn <andrew@...n.ch>, Oleksij Rempel <o.rempel@...gutronix.de>,
"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Jonathan Corbet <corbet@....net>, Donald Hunter <donald.hunter@...il.com>,
Rob Herring <robh@...nel.org>, Andrew Lunn <andrew+netdev@...n.ch>,
Simon Horman <horms@...nel.org>, Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>, Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
linux-doc@...r.kernel.org, Kyle Swenson <kyle.swenson@....tech>,
Dent Project <dentproject@...uxfoundation.org>, kernel@...gutronix.de,
Maxime Chevallier <maxime.chevallier@...tlin.com>,
devicetree@...r.kernel.org, Kory Maincent <kory.maincent@...tlin.com>
Subject: [PATCH net-next v4 12/27] net: ethtool: Add support for new PSE
device index description
From: Kory Maincent (Dent Project) <kory.maincent@...tlin.com>
Add functionality to report the newly introduced PSE device index to
the user, enabling better identification and management of PSE devices.
Reviewed-by: Oleksij Rempel <o.rempel@...gutronix.de>
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Kory Maincent <kory.maincent@...tlin.com>
---
Changes in v2:
- new patch.
---
Documentation/netlink/specs/ethtool.yaml | 5 +++++
Documentation/networking/ethtool-netlink.rst | 4 ++++
include/uapi/linux/ethtool_netlink.h | 1 -
include/uapi/linux/ethtool_netlink_generated.h | 1 +
net/ethtool/pse-pd.c | 4 ++++
5 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/Documentation/netlink/specs/ethtool.yaml b/Documentation/netlink/specs/ethtool.yaml
index 60f85fbf4156..cc26a9dfa8f7 100644
--- a/Documentation/netlink/specs/ethtool.yaml
+++ b/Documentation/netlink/specs/ethtool.yaml
@@ -1357,6 +1357,10 @@ attribute-sets:
type: nest
multi-attr: true
nested-attributes: c33-pse-pw-limit
+ -
+ name: pse-id
+ type: u32
+ name-prefix: ethtool-a-
-
name: rss
attr-cnt-name: __ethtool-a-rss-cnt
@@ -2162,6 +2166,7 @@ operations:
- c33-pse-ext-substate
- c33-pse-avail-pw-limit
- c33-pse-pw-limit-ranges
+ - pse-id
dump: *pse-get-op
-
name: pse-set
diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst
index a7ba6368a4d5..6f5a880d8df2 100644
--- a/Documentation/networking/ethtool-netlink.rst
+++ b/Documentation/networking/ethtool-netlink.rst
@@ -1771,6 +1771,7 @@ Kernel response contents:
limit of the PoE PSE.
``ETHTOOL_A_C33_PSE_PW_LIMIT_RANGES`` nested Supported power limit
configuration ranges.
+ ``ETHTOOL_A_PSE_ID`` u32 Index of the PSE
========================================== ====== =============================
When set, the optional ``ETHTOOL_A_PODL_PSE_ADMIN_STATE`` attribute identifies
@@ -1844,6 +1845,9 @@ identifies the C33 PSE power limit ranges through
If the controller works with fixed classes, the min and max values will be
equal.
+The ``ETHTOOL_A_PSE_ID`` attribute identifies the index of the PSE
+controller.
+
PSE_SET
=======
diff --git a/include/uapi/linux/ethtool_netlink.h b/include/uapi/linux/ethtool_netlink.h
index 9c909ce733a5..335127b895fe 100644
--- a/include/uapi/linux/ethtool_netlink.h
+++ b/include/uapi/linux/ethtool_netlink.h
@@ -193,7 +193,6 @@ enum {
ETHTOOL_A_STATS_RMON_MAX = (__ETHTOOL_A_STATS_RMON_CNT - 1)
};
-
/* generic netlink info */
#define ETHTOOL_GENL_NAME "ethtool"
#define ETHTOOL_GENL_VERSION 1
diff --git a/include/uapi/linux/ethtool_netlink_generated.h b/include/uapi/linux/ethtool_netlink_generated.h
index 43993a2d68e5..b3c928c71ca3 100644
--- a/include/uapi/linux/ethtool_netlink_generated.h
+++ b/include/uapi/linux/ethtool_netlink_generated.h
@@ -630,6 +630,7 @@ enum {
ETHTOOL_A_C33_PSE_EXT_SUBSTATE,
ETHTOOL_A_C33_PSE_AVAIL_PW_LIMIT,
ETHTOOL_A_C33_PSE_PW_LIMIT_RANGES,
+ ETHTOOL_A_PSE_ID,
__ETHTOOL_A_PSE_CNT,
ETHTOOL_A_PSE_MAX = (__ETHTOOL_A_PSE_CNT - 1)
diff --git a/net/ethtool/pse-pd.c b/net/ethtool/pse-pd.c
index 2819e2ba6be2..6cfdfaa47c1c 100644
--- a/net/ethtool/pse-pd.c
+++ b/net/ethtool/pse-pd.c
@@ -83,6 +83,7 @@ static int pse_reply_size(const struct ethnl_req_info *req_base,
const struct ethtool_pse_control_status *st = &data->status;
int len = 0;
+ len += nla_total_size(sizeof(u32)); /* _PSE_ID */
if (st->podl_admin_state > 0)
len += nla_total_size(sizeof(u32)); /* _PODL_PSE_ADMIN_STATE */
if (st->podl_pw_status > 0)
@@ -148,6 +149,9 @@ static int pse_fill_reply(struct sk_buff *skb,
const struct pse_reply_data *data = PSE_REPDATA(reply_base);
const struct ethtool_pse_control_status *st = &data->status;
+ if (nla_put_u32(skb, ETHTOOL_A_PSE_ID, st->pse_id))
+ return -EMSGSIZE;
+
if (st->podl_admin_state > 0 &&
nla_put_u32(skb, ETHTOOL_A_PODL_PSE_ADMIN_STATE,
st->podl_admin_state))
--
2.34.1
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