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authorAndrew Lunn <andrew@lunn.ch>2020-05-10 22:12:37 +0300
committerJakub Kicinski <kuba@kernel.org>2020-05-10 22:28:41 +0300
commit1e2dc14509fd072739e4bab98ac42317267dbad6 (patch)
tree47601606f65e997a2e21d35df85908673c3cfff5 /net/ethtool/cabletest.c
parent1dd3f212af30b42c90ba252c165f2f6d2ddf5230 (diff)
downloadlinux-1e2dc14509fd072739e4bab98ac42317267dbad6.tar.xz
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 v4: s/ENOTSUPP/EOPNOTSUPP/g Signed-off-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ethtool/cabletest.c')
-rw-r--r--net/ethtool/cabletest.c53
1 files changed, 52 insertions, 1 deletions
diff --git a/net/ethtool/cabletest.c b/net/ethtool/cabletest.c
index ae8e63647663..e0c917918c70 100644
--- a/net/ethtool/cabletest.c
+++ b/net/ethtool/cabletest.c
@@ -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);