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net: Move PHY statistics code into PHY library helpers 

In order to make it possible for network device drivers that do not
necessarily have a phy_device attached, but still report PHY statistics,
have a preliminary refactoring consisting in creating helper functions
that encapsulate the PHY device driver knowledge within PHYLIB.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2018-04-25 12:12:47 -07:00 committed by David S. Miller
parent 8349440733
commit c59530d0d5
3 changed files with 76 additions and 30 deletions
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48
drivers/net/phy/phy.c
View File

@ -1277,3 +1277,51 @@ int phy_ethtool_nway_reset(struct net_device *ndev)
return phy_restart_aneg(phydev);
}
EXPORT_SYMBOL(phy_ethtool_nway_reset);
int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data)
{
if (!phydev->drv)
return -EIO;
mutex_lock(&phydev->lock);
phydev->drv->get_strings(phydev, data);
mutex_unlock(&phydev->lock);
return 0;
}
EXPORT_SYMBOL(phy_ethtool_get_strings);
int phy_ethtool_get_sset_count(struct phy_device *phydev)
{
int ret;
if (!phydev->drv)
return -EIO;
if (phydev->drv->get_sset_count &&
phydev->drv->get_strings &&
phydev->drv->get_stats) {
mutex_lock(&phydev->lock);
ret = phydev->drv->get_sset_count(phydev);
mutex_unlock(&phydev->lock);
return ret;
}
return -EOPNOTSUPP;
}
EXPORT_SYMBOL(phy_ethtool_get_sset_count);
int phy_ethtool_get_stats(struct phy_device *phydev,
struct ethtool_stats *stats, u64 *data)
{
if (!phydev->drv)
return -EIO;
mutex_lock(&phydev->lock);
phydev->drv->get_stats(phydev, stats, data);
mutex_unlock(&phydev->lock);
return 0;
}
EXPORT_SYMBOL(phy_ethtool_get_stats);

20
include/linux/phy.h
View File

@ -1066,6 +1066,26 @@ int phy_ethtool_nway_reset(struct net_device *ndev);
#if IS_ENABLED(CONFIG_PHYLIB)
int __init mdio_bus_init(void);
void mdio_bus_exit(void);
int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data);
int phy_ethtool_get_sset_count(struct phy_device *phydev);
int phy_ethtool_get_stats(struct phy_device *phydev,
struct ethtool_stats *stats, u64 *data);
#else
int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data)
{
return -EOPNOTSUPP;
}
int phy_ethtool_get_sset_count(struct phy_device *phydev)
{
return -EOPNOTSUPP;
}
int phy_ethtool_get_stats(struct phy_device *phydev,
struct ethtool_stats *stats, u64 *data)
{
return -EOPNOTSUPP;
}
#endif
extern struct bus_type mdio_bus_type;

38
net/core/ethtool.c
View File

@ -211,23 +211,6 @@ static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
return ret;
}
static int phy_get_sset_count(struct phy_device *phydev)
{
int ret;
if (phydev->drv->get_sset_count &&
phydev->drv->get_strings &&
phydev->drv->get_stats) {
mutex_lock(&phydev->lock);
ret = phydev->drv->get_sset_count(phydev);
mutex_unlock(&phydev->lock);
return ret;
}
return -EOPNOTSUPP;
}
static int __ethtool_get_sset_count(struct net_device *dev, int sset)
{
const struct ethtool_ops *ops = dev->ethtool_ops;
@ -246,7 +229,7 @@ static int __ethtool_get_sset_count(struct net_device *dev, int sset)
if (sset == ETH_SS_PHY_STATS) {
if (dev->phydev)
return phy_get_sset_count(dev->phydev);
return phy_ethtool_get_sset_count(dev->phydev);
else
return -EOPNOTSUPP;
}
@ -273,15 +256,10 @@ static void __ethtool_get_strings(struct net_device *dev,
else if (stringset == ETH_SS_PHY_TUNABLES)
memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
else if (stringset == ETH_SS_PHY_STATS) {
struct phy_device *phydev = dev->phydev;
if (phydev) {
mutex_lock(&phydev->lock);
phydev->drv->get_strings(phydev, data);
mutex_unlock(&phydev->lock);
} else {
if (dev->phydev)
phy_ethtool_get_strings(dev->phydev, data);
else
return;
}
} else
/* ops->get_strings is valid because checked earlier */
ops->get_strings(dev, stringset, data);
@ -2002,7 +1980,7 @@ static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
if (!phydev)
return -EOPNOTSUPP;
n_stats = phy_get_sset_count(phydev);
n_stats = phy_ethtool_get_sset_count(dev->phydev);
if (n_stats < 0)
return n_stats;
if (n_stats > S32_MAX / sizeof(u64))
@ -2017,9 +1995,9 @@ static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
if (n_stats && !data)
return -ENOMEM;
mutex_lock(&phydev->lock);
phydev->drv->get_stats(phydev, &stats, data);
mutex_unlock(&phydev->lock);
ret = phy_ethtool_get_stats(dev->phydev, &stats, data);
if (ret < 0)
return ret;
ret = -EFAULT;
if (copy_to_user(useraddr, &stats, sizeof(stats)))