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Message-Id: <20200509162851.362346-8-andrew@lunn.ch>
Date: Sat, 9 May 2020 18:28:48 +0200
From: Andrew Lunn <andrew@...n.ch>
To: David Miller <davem@...emloft.net>
Cc: netdev <netdev@...r.kernel.org>,
Florian Fainelli <f.fainelli@...il.com>,
Heiner Kallweit <hkallweit1@...il.com>,
Chris Healy <cphealy@...il.com>,
Michal Kubecek <mkubecek@...e.cz>, michael@...le.cc,
Andrew Lunn <andrew@...n.ch>
Subject: [PATCH net-next v3 07/10] net: ethtool: Add helpers for reporting test results
The PHY drivers can use these helpers for reporting the results. The
results get translated into netlink attributes which are added to the
pre-allocated skbuf.
v3:
Poison phydev->skb
Return -EMSGSIZE when ethnl_bcastmsg_put() fails
Return valid error code when nla_nest_start() fails
Use u8 for results
Actually put u32 length into message
Signed-off-by: Andrew Lunn <andrew@...n.ch>
Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
---
include/linux/ethtool_netlink.h | 13 ++++++++
include/linux/phy.h | 4 +++
net/ethtool/cabletest.c | 55 +++++++++++++++++++++++++++++++--
3 files changed, 70 insertions(+), 2 deletions(-)
diff --git a/include/linux/ethtool_netlink.h b/include/linux/ethtool_netlink.h
index 7d763ba22f6f..c7db23eebb75 100644
--- a/include/linux/ethtool_netlink.h
+++ b/include/linux/ethtool_netlink.h
@@ -20,6 +20,8 @@ struct phy_device;
int ethnl_cable_test_alloc(struct phy_device *phydev);
void ethnl_cable_test_free(struct phy_device *phydev);
void ethnl_cable_test_finished(struct phy_device *phydev);
+int ethnl_cable_test_result(struct phy_device *phydev, u8 pair, u8 result);
+int ethnl_cable_test_fault_length(struct phy_device *phydev, u8 pair, u32 cm);
#else
static inline int ethnl_cable_test_alloc(struct phy_device *phydev)
{
@@ -33,5 +35,16 @@ static inline void ethnl_cable_test_free(struct phy_device *phydev)
static inline void ethnl_cable_test_finished(struct phy_device *phydev)
{
}
+static inline int ethnl_cable_test_result(struct phy_device *phydev, u8 pair,
+ u8 result)
+{
+ return -ENOTSUPP;
+}
+
+static inline int ethnl_cable_test_fault_length(struct phy_device *phydev,
+ u8 pair, u32 cm)
+{
+ return -ENOTSUPP;
+}
#endif /* IS_ENABLED(ETHTOOL_NETLINK) */
#endif /* _LINUX_ETHTOOL_NETLINK_H_ */
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 169fae4249a9..5d8ff5428010 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1265,6 +1265,10 @@ int phy_start_cable_test(struct phy_device *phydev,
}
#endif
+int phy_cable_test_result(struct phy_device *phydev, u8 pair, u16 result);
+int phy_cable_test_fault_length(struct phy_device *phydev, u8 pair,
+ u16 cm);
+
static inline void phy_device_reset(struct phy_device *phydev, int value)
{
mdio_device_reset(&phydev->mdio, value);
diff --git a/net/ethtool/cabletest.c b/net/ethtool/cabletest.c
index bed6c67ea933..e0c917918c70 100644
--- a/net/ethtool/cabletest.c
+++ b/net/ethtool/cabletest.c
@@ -65,7 +65,7 @@ int ethnl_cable_test_alloc(struct phy_device *phydev)
phydev->ehdr = ethnl_bcastmsg_put(phydev->skb,
ETHTOOL_MSG_CABLE_TEST_NTF);
if (!phydev->ehdr) {
- err = -EINVAL;
+ err = -EMSGSIZE;
goto out;
}
@@ -81,13 +81,16 @@ int ethnl_cable_test_alloc(struct phy_device *phydev)
phydev->nest = nla_nest_start(phydev->skb,
ETHTOOL_A_CABLE_TEST_NTF_NEST);
- if (!phydev->nest)
+ if (!phydev->nest) {
+ err = -EMSGSIZE;
goto out;
+ }
return 0;
out:
nlmsg_free(phydev->skb);
+ phydev->skb = NULL;
return err;
}
EXPORT_SYMBOL_GPL(ethnl_cable_test_alloc);
@@ -95,6 +98,7 @@ EXPORT_SYMBOL_GPL(ethnl_cable_test_alloc);
void ethnl_cable_test_free(struct phy_device *phydev)
{
nlmsg_free(phydev->skb);
+ phydev->skb = NULL;
}
EXPORT_SYMBOL_GPL(ethnl_cable_test_free);
@@ -107,3 +111,50 @@ void ethnl_cable_test_finished(struct phy_device *phydev)
ethnl_multicast(phydev->skb, phydev->attached_dev);
}
EXPORT_SYMBOL_GPL(ethnl_cable_test_finished);
+
+int ethnl_cable_test_result(struct phy_device *phydev, u8 pair, u8 result)
+{
+ struct nlattr *nest;
+ int ret = -EMSGSIZE;
+
+ nest = nla_nest_start(phydev->skb, ETHTOOL_A_CABLE_NEST_RESULT);
+ if (!nest)
+ return -EMSGSIZE;
+
+ if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_RESULT_PAIR, pair))
+ goto err;
+ if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_RESULT_CODE, result))
+ goto err;
+
+ nla_nest_end(phydev->skb, nest);
+ return 0;
+
+err:
+ nla_nest_cancel(phydev->skb, nest);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(ethnl_cable_test_result);
+
+int ethnl_cable_test_fault_length(struct phy_device *phydev, u8 pair, u32 cm)
+{
+ struct nlattr *nest;
+ int ret = -EMSGSIZE;
+
+ nest = nla_nest_start(phydev->skb,
+ ETHTOOL_A_CABLE_NEST_FAULT_LENGTH);
+ if (!nest)
+ return -EMSGSIZE;
+
+ if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_FAULT_LENGTH_PAIR, pair))
+ goto err;
+ if (nla_put_u32(phydev->skb, ETHTOOL_A_CABLE_FAULT_LENGTH_CM, cm))
+ goto err;
+
+ nla_nest_end(phydev->skb, nest);
+ return 0;
+
+err:
+ nla_nest_cancel(phydev->skb, nest);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(ethnl_cable_test_fault_length);
--
2.26.2
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