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Message-Id: <20250103-feature_poe_port_prio-v4-21-dc91a3c0c187@bootlin.com>
Date: Fri, 03 Jan 2025 22:13:10 +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 21/27] net: ethtool: Add support for new power
domains index description
From: Kory Maincent (Dent Project) <kory.maincent@...tlin.com>
Report the index of the newly introduced PSE power domain to the user,
enabling improved management of the power budget for PSE devices.
Reviewed-by: Oleksij Rempel <o.rempel@...gutronix.de>
Signed-off-by: Kory Maincent <kory.maincent@...tlin.com>
---
Changes in v3:
- Do not support power domain id = 0 because we can't differentiate with
no PSE power domain.
Changes in v2:
- new patch.
---
Documentation/netlink/specs/ethtool.yaml | 5 +++++
Documentation/networking/ethtool-netlink.rst | 4 ++++
drivers/net/pse-pd/pse_core.c | 3 +++
include/linux/ethtool.h | 2 ++
include/uapi/linux/ethtool_netlink_generated.h | 1 +
net/ethtool/pse-pd.c | 7 +++++++
6 files changed, 22 insertions(+)
diff --git a/Documentation/netlink/specs/ethtool.yaml b/Documentation/netlink/specs/ethtool.yaml
index 9aa62137166a..686181440d58 100644
--- a/Documentation/netlink/specs/ethtool.yaml
+++ b/Documentation/netlink/specs/ethtool.yaml
@@ -1361,6 +1361,10 @@ attribute-sets:
name: pse-id
type: u32
name-prefix: ethtool-a-
+ -
+ name: pse-pw-d-id
+ type: u32
+ name-prefix: ethtool-a-
-
name: rss
attr-cnt-name: __ethtool-a-rss-cnt
@@ -2183,6 +2187,7 @@ operations:
- c33-pse-avail-pw-limit
- c33-pse-pw-limit-ranges
- pse-id
+ - pse-pw-d-id
dump: *pse-get-op
-
name: pse-set
diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst
index 9d836fa670df..68c0cfcea127 100644
--- a/Documentation/networking/ethtool-netlink.rst
+++ b/Documentation/networking/ethtool-netlink.rst
@@ -1773,6 +1773,7 @@ Kernel response contents:
``ETHTOOL_A_C33_PSE_PW_LIMIT_RANGES`` nested Supported power limit
configuration ranges.
``ETHTOOL_A_PSE_ID`` u32 Index of the PSE
+ ``ETHTOOL_A_PSE_PW_D_ID`` u32 Index of the PSE power domain
========================================== ====== =============================
When set, the optional ``ETHTOOL_A_PODL_PSE_ADMIN_STATE`` attribute identifies
@@ -1849,6 +1850,9 @@ equal.
The ``ETHTOOL_A_PSE_ID`` attribute identifies the index of the PSE
controller.
+The ``ETHTOOL_A_PSE_PW_D_ID`` attribute identifies the index of PSE power
+domain.
+
PSE_SET
=======
diff --git a/drivers/net/pse-pd/pse_core.c b/drivers/net/pse-pd/pse_core.c
index 6bfe0fca90b4..9c482d341b9c 100644
--- a/drivers/net/pse-pd/pse_core.c
+++ b/drivers/net/pse-pd/pse_core.c
@@ -1052,6 +1052,9 @@ int pse_ethtool_get_status(struct pse_control *psec,
status->pse_id = pcdev->id;
mutex_lock(&pcdev->lock);
+ if (pcdev->pi[psec->id].pw_d)
+ status->pw_d_id = pcdev->pi[psec->id].pw_d->id;
+
ret = ops->pi_get_admin_state(pcdev, psec->id, &admin_state);
if (ret)
goto out;
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index d5d13a3d4447..1ae0651b2ebd 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -1328,6 +1328,7 @@ struct ethtool_c33_pse_pw_limit_range {
* struct ethtool_pse_control_status - PSE control/channel status.
*
* @pse_id: index number of the PSE.
+ * @pw_d_id: PSE power domain index.
* @podl_admin_state: operational state of the PoDL PSE
* functions. IEEE 802.3-2018 30.15.1.1.2 aPoDLPSEAdminState
* @podl_pw_status: power detection status of the PoDL PSE.
@@ -1350,6 +1351,7 @@ struct ethtool_c33_pse_pw_limit_range {
*/
struct ethtool_pse_control_status {
u32 pse_id;
+ u32 pw_d_id;
enum ethtool_podl_pse_admin_state podl_admin_state;
enum ethtool_podl_pse_pw_d_status podl_pw_status;
enum ethtool_c33_pse_admin_state c33_admin_state;
diff --git a/include/uapi/linux/ethtool_netlink_generated.h b/include/uapi/linux/ethtool_netlink_generated.h
index 7293592fd689..1ec5a0838f50 100644
--- a/include/uapi/linux/ethtool_netlink_generated.h
+++ b/include/uapi/linux/ethtool_netlink_generated.h
@@ -631,6 +631,7 @@ enum {
ETHTOOL_A_C33_PSE_AVAIL_PW_LIMIT,
ETHTOOL_A_C33_PSE_PW_LIMIT_RANGES,
ETHTOOL_A_PSE_ID,
+ ETHTOOL_A_PSE_PW_D_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 bbc9ae910e02..00b97712767d 100644
--- a/net/ethtool/pse-pd.c
+++ b/net/ethtool/pse-pd.c
@@ -85,6 +85,8 @@ static int pse_reply_size(const struct ethnl_req_info *req_base,
int len = 0;
len += nla_total_size(sizeof(u32)); /* _PSE_ID */
+ if (st->pw_d_id > 0)
+ len += nla_total_size(sizeof(u32)); /* _PSE_PW_D_ID */
if (st->podl_admin_state > 0)
len += nla_total_size(sizeof(u32)); /* _PODL_PSE_ADMIN_STATE */
if (st->podl_pw_status > 0)
@@ -153,6 +155,11 @@ static int pse_fill_reply(struct sk_buff *skb,
if (nla_put_u32(skb, ETHTOOL_A_PSE_ID, st->pse_id))
return -EMSGSIZE;
+ if (st->pw_d_id > 0 &&
+ nla_put_u32(skb, ETHTOOL_A_PSE_PW_D_ID,
+ st->pw_d_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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