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Message-Id: <20240326-feature_poe-v6-6-c1011b6ea1cb@bootlin.com>
Date: Tue, 26 Mar 2024 15:04:43 +0100
From: Kory Maincent <kory.maincent@...tlin.com>
To: "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>,
Luis Chamberlain <mcgrof@...nel.org>, Russ Weight <russ.weight@...ux.dev>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Rafael J. Wysocki" <rafael@...nel.org>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Oleksij Rempel <o.rempel@...gutronix.de>, Mark Brown <broonie@...nel.org>,
Frank Rowand <frowand.list@...il.com>, Andrew Lunn <andrew@...n.ch>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>
Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
devicetree@...r.kernel.org, Dent Project <dentproject@...uxfoundation.org>,
Kory Maincent <kory.maincent@...tlin.com>
Subject: [PATCH net-next v6 06/17] net: ethtool: pse-pd: Expand pse
commands with the PSE PoE interface
From: Kory Maincent (Dent Project) <kory.maincent@...tlin.com>
Add PSE PoE interface support in the ethtool pse command.
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Kory Maincent <kory.maincent@...tlin.com>
---
Changes in v2:
- Follow the "c33" PoE prefix naming change.
Changes in v3:
- Replace the pse_get_types() helper by pse_has_podl() and pse_has_c33().
- Replace PoE to c33 in the netlink error log.
- Fix documentation build warning.
---
Documentation/networking/ethtool-netlink.rst | 20 ++++++++++
net/ethtool/pse-pd.c | 60 +++++++++++++++++++++++-----
2 files changed, 70 insertions(+), 10 deletions(-)
diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst
index d583d9abf2f8..294187c3a3b0 100644
--- a/Documentation/networking/ethtool-netlink.rst
+++ b/Documentation/networking/ethtool-netlink.rst
@@ -1717,6 +1717,10 @@ Kernel response contents:
PSE functions
``ETHTOOL_A_PODL_PSE_PW_D_STATUS`` u32 power detection status of the
PoDL PSE.
+ ``ETHTOOL_A_C33_PSE_ADMIN_STATE`` u32 Operational state of the PoE
+ PSE functions.
+ ``ETHTOOL_A_C33_PSE_PW_D_STATUS`` u32 power detection status of the
+ PoE PSE.
====================================== ====== =============================
When set, the optional ``ETHTOOL_A_PODL_PSE_ADMIN_STATE`` attribute identifies
@@ -1728,6 +1732,12 @@ aPoDLPSEAdminState. Possible values are:
.. kernel-doc:: include/uapi/linux/ethtool.h
:identifiers: ethtool_podl_pse_admin_state
+The same goes for ``ETHTOOL_A_C33_PSE_ADMIN_STATE`` implementing
+``IEEE 802.3-2022`` 30.9.1.1.2 aPSEAdminState.
+
+.. kernel-doc:: include/uapi/linux/ethtool.h
+ :identifiers: ethtool_c33_pse_admin_state
+
When set, the optional ``ETHTOOL_A_PODL_PSE_PW_D_STATUS`` attribute identifies
the power detection status of the PoDL PSE. The status depend on internal PSE
state machine and automatic PD classification support. This option is
@@ -1737,6 +1747,12 @@ Possible values are:
.. kernel-doc:: include/uapi/linux/ethtool.h
:identifiers: ethtool_podl_pse_pw_d_status
+The same goes for ``ETHTOOL_A_C33_PSE_ADMIN_PW_D_STATUS`` implementing
+``IEEE 802.3-2022`` 30.9.1.1.5 aPSEPowerDetectionStatus.
+
+.. kernel-doc:: include/uapi/linux/ethtool.h
+ :identifiers: ethtool_c33_pse_pw_d_status
+
PSE_SET
=======
@@ -1747,6 +1763,7 @@ Request contents:
====================================== ====== =============================
``ETHTOOL_A_PSE_HEADER`` nested request header
``ETHTOOL_A_PODL_PSE_ADMIN_CONTROL`` u32 Control PoDL PSE Admin state
+ ``ETHTOOL_A_C33_PSE_ADMIN_CONTROL`` u32 Control PSE Admin state
====================================== ====== =============================
When set, the optional ``ETHTOOL_A_PODL_PSE_ADMIN_CONTROL`` attribute is used
@@ -1754,6 +1771,9 @@ to control PoDL PSE Admin functions. This option is implementing
``IEEE 802.3-2018`` 30.15.1.2.1 acPoDLPSEAdminControl. See
``ETHTOOL_A_PODL_PSE_ADMIN_STATE`` for supported values.
+The same goes for ``ETHTOOL_A_C33_PSE_ADMIN_CONTROL`` implementing
+``IEEE 802.3-2022`` 30.9.1.2.1 acPSEAdminControl.
+
RSS_GET
=======
diff --git a/net/ethtool/pse-pd.c b/net/ethtool/pse-pd.c
index aef57a058f0d..a3bfc3d9644e 100644
--- a/net/ethtool/pse-pd.c
+++ b/net/ethtool/pse-pd.c
@@ -82,6 +82,10 @@ static int pse_reply_size(const struct ethnl_req_info *req_base,
len += nla_total_size(sizeof(u32)); /* _PODL_PSE_ADMIN_STATE */
if (st->podl_pw_status > 0)
len += nla_total_size(sizeof(u32)); /* _PODL_PSE_PW_D_STATUS */
+ if (st->c33_admin_state > 0)
+ len += nla_total_size(sizeof(u32)); /* _C33_PSE_ADMIN_STATE */
+ if (st->c33_pw_status > 0)
+ len += nla_total_size(sizeof(u32)); /* _C33_PSE_PW_D_STATUS */
return len;
}
@@ -103,6 +107,16 @@ static int pse_fill_reply(struct sk_buff *skb,
st->podl_pw_status))
return -EMSGSIZE;
+ if (st->c33_admin_state > 0 &&
+ nla_put_u32(skb, ETHTOOL_A_C33_PSE_ADMIN_STATE,
+ st->c33_admin_state))
+ return -EMSGSIZE;
+
+ if (st->c33_pw_status > 0 &&
+ nla_put_u32(skb, ETHTOOL_A_C33_PSE_PW_D_STATUS,
+ st->c33_pw_status))
+ return -EMSGSIZE;
+
return 0;
}
@@ -113,25 +127,18 @@ const struct nla_policy ethnl_pse_set_policy[ETHTOOL_A_PSE_MAX + 1] = {
[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL] =
NLA_POLICY_RANGE(NLA_U32, ETHTOOL_PODL_PSE_ADMIN_STATE_DISABLED,
ETHTOOL_PODL_PSE_ADMIN_STATE_ENABLED),
+ [ETHTOOL_A_C33_PSE_ADMIN_CONTROL] =
+ NLA_POLICY_RANGE(NLA_U32, ETHTOOL_C33_PSE_ADMIN_STATE_DISABLED,
+ ETHTOOL_C33_PSE_ADMIN_STATE_ENABLED),
};
static int
ethnl_set_pse_validate(struct ethnl_req_info *req_info, struct genl_info *info)
-{
- return !!info->attrs[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL];
-}
-
-static int
-ethnl_set_pse(struct ethnl_req_info *req_info, struct genl_info *info)
{
struct net_device *dev = req_info->dev;
- struct pse_control_config config = {};
struct nlattr **tb = info->attrs;
struct phy_device *phydev;
- /* this values are already validated by the ethnl_pse_set_policy */
- config.podl_admin_control = nla_get_u32(tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL]);
-
phydev = dev->phydev;
if (!phydev) {
NL_SET_ERR_MSG(info->extack, "No PHY is attached");
@@ -143,6 +150,39 @@ ethnl_set_pse(struct ethnl_req_info *req_info, struct genl_info *info)
return -EOPNOTSUPP;
}
+ if (tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL] &&
+ !(pse_has_podl(phydev->psec))) {
+ NL_SET_ERR_MSG_ATTR(info->extack,
+ tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL],
+ "setting PoDL PSE admin control not supported");
+ return -EOPNOTSUPP;
+ }
+ if (tb[ETHTOOL_A_C33_PSE_ADMIN_CONTROL] &&
+ !(pse_has_c33(phydev->psec))) {
+ NL_SET_ERR_MSG_ATTR(info->extack,
+ tb[ETHTOOL_A_C33_PSE_ADMIN_CONTROL],
+ "setting C33 PSE admin control not supported");
+ return -EOPNOTSUPP;
+ }
+
+ return 1;
+}
+
+static int
+ethnl_set_pse(struct ethnl_req_info *req_info, struct genl_info *info)
+{
+ struct net_device *dev = req_info->dev;
+ struct pse_control_config config = {};
+ struct nlattr **tb = info->attrs;
+ struct phy_device *phydev;
+
+ phydev = dev->phydev;
+ /* These values are already validated by the ethnl_pse_set_policy */
+ if (pse_has_podl(phydev->psec))
+ config.podl_admin_control = nla_get_u32(tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL]);
+ if (pse_has_c33(phydev->psec))
+ config.c33_admin_control = nla_get_u32(tb[ETHTOOL_A_C33_PSE_ADMIN_CONTROL]);
+
/* Return errno directly - PSE has no notification */
return pse_ethtool_set_config(phydev->psec, info->extack, &config);
}
--
2.25.1
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