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net: ethtool: Introduce ethtool_phy_ops

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In order to decouple ethtool from its PHY library dependency, define an
ethtool_phy_ops singleton which can be overriden by the PHY library when
it loads with an appropriate set of function pointers.

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 2020-07-05 21:27:56 -07:00 committed by David S. Miller
parent 1a4d681634
commit 4895d7808e
3 changed files with 38 additions and 0 deletions
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25
include/linux/ethtool.h
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@ -502,5 +502,30 @@ int ethtool_virtdev_set_link_ksettings(struct net_device *dev,
const struct ethtool_link_ksettings *cmd,
u32 *dev_speed, u8 *dev_duplex);
struct netlink_ext_ack;
struct phy_device;
struct phy_tdr_config;
/**
* struct ethtool_phy_ops - Optional PHY device options
* @start_cable_test - Start a cable test
* @start_cable_test_tdr - Start a Time Domain Reflectometry cable test
*
* All operations are optional (i.e. the function pointer may be set to %NULL)
* and callers must take this into account. Callers must hold the RTNL lock.
*/
struct ethtool_phy_ops {
int (*start_cable_test)(struct phy_device *phydev,
struct netlink_ext_ack *extack);
int (*start_cable_test_tdr)(struct phy_device *phydev,
struct netlink_ext_ack *extack,
const struct phy_tdr_config *config);
};
/**
* ethtool_set_ethtool_phy_ops - Set the ethtool_phy_ops singleton
* @ops: Ethtool PHY operations to set
*/
void ethtool_set_ethtool_phy_ops(const struct ethtool_phy_ops *ops);
#endif /* _LINUX_ETHTOOL_H */

11
net/ethtool/common.c
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@ -2,6 +2,7 @@
#include <linux/net_tstamp.h>
#include <linux/phy.h>
#include <linux/rtnetlink.h>
#include "common.h"
@ -373,3 +374,13 @@ int __ethtool_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
return 0;
}
const struct ethtool_phy_ops *ethtool_phy_ops;
void ethtool_set_ethtool_phy_ops(const struct ethtool_phy_ops *ops)
{
rtnl_lock();
ethtool_phy_ops = ops;
rtnl_unlock();
}
EXPORT_SYMBOL_GPL(ethtool_set_ethtool_phy_ops);

2
net/ethtool/common.h
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@ -37,4 +37,6 @@ bool convert_legacy_settings_to_link_ksettings(
int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max);
int __ethtool_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info);
extern const struct ethtool_phy_ops *ethtool_phy_ops;
#endif /* _ETHTOOL_COMMON_H */