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net: ethtool: Add helpers for reporting test results

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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>
This commit is contained in:
Andrew Lunn
2020-05-10 21:12:37 +02:00
committed by Jakub Kicinski
parent 1dd3f212af
commit 1e2dc14509
3 changed files with 70 additions and 2 deletions
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4
include/linux/phy.h
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@@ -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);