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net: dsa: Add support for reading switch registers with ethtool 

Add support for reading switch registers with 'ethtool -d'.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guenter Roeck 2014-10-29 10:45:04 -07:00 committed by David S. Miller
parent 33b43df40a
commit 3d762a0f0a
2 changed files with 30 additions and 0 deletions
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7
include/net/dsa.h
View File

@ -268,6 +268,13 @@ struct dsa_switch_driver {
struct ethtool_eeprom *eeprom, u8 *data);
int (*set_eeprom)(struct dsa_switch *ds,
struct ethtool_eeprom *eeprom, u8 *data);
/*
* Register access.
*/
int (*get_regs_len)(struct dsa_switch *ds, int port);
void (*get_regs)(struct dsa_switch *ds, int port,
struct ethtool_regs *regs, void *p);
};
void register_switch_driver(struct dsa_switch_driver *type);

23
net/dsa/slave.c
View File

@ -249,6 +249,27 @@ static void dsa_slave_get_drvinfo(struct net_device *dev,
strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
}
static int dsa_slave_get_regs_len(struct net_device *dev)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_switch *ds = p->parent;
if (ds->drv->get_regs_len)
return ds->drv->get_regs_len(ds, p->port);
return -EOPNOTSUPP;
}
static void
dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_switch *ds = p->parent;
if (ds->drv->get_regs)
ds->drv->get_regs(ds, p->port, regs, _p);
}
static int dsa_slave_nway_reset(struct net_device *dev)
{
struct dsa_slave_priv *p = netdev_priv(dev);
@ -423,6 +444,8 @@ static const struct ethtool_ops dsa_slave_ethtool_ops = {
.get_settings = dsa_slave_get_settings,
.set_settings = dsa_slave_set_settings,
.get_drvinfo = dsa_slave_get_drvinfo,
.get_regs_len = dsa_slave_get_regs_len,
.get_regs = dsa_slave_get_regs,
.nway_reset = dsa_slave_nway_reset,
.get_link = dsa_slave_get_link,
.get_eeprom_len = dsa_slave_get_eeprom_len,