diff options
| -rw-r--r-- | include/linux/ethtool.h | 4 | ||||
| -rw-r--r-- | net/core/ethtool.c | 17 |
2 files changed, 18 insertions, 3 deletions
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 7ffab7cb9ee3..3a0fae6e327d 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -517,7 +517,9 @@ struct ethtool_ops { #define ETHTOOL_GMSGLVL 0x00000007 /* Get driver message level */ #define ETHTOOL_SMSGLVL 0x00000008 /* Set driver msg level. */ #define ETHTOOL_NWAY_RST 0x00000009 /* Restart autonegotiation. */ -#define ETHTOOL_GLINK 0x0000000a /* Get link status (ethtool_value) */ +/* Get link status for host, i.e. whether the interface *and* the + * physical port (if there is one) are up (ethtool_value). */ +#define ETHTOOL_GLINK 0x0000000a #define ETHTOOL_GEEPROM 0x0000000b /* Get EEPROM data */ #define ETHTOOL_SEEPROM 0x0000000c /* Set EEPROM data. */ #define ETHTOOL_GCOALESCE 0x0000000e /* Get coalesce config */ diff --git a/net/core/ethtool.c b/net/core/ethtool.c index abbe8fa66a51..f9e7179dedf9 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -365,6 +365,20 @@ static int ethtool_nway_reset(struct net_device *dev) return dev->ethtool_ops->nway_reset(dev); } +static int ethtool_get_link(struct net_device *dev, char __user *useraddr) +{ + struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; + + if (!dev->ethtool_ops->get_link) + return -EOPNOTSUPP; + + edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev); + + if (copy_to_user(useraddr, &edata, sizeof(edata))) + return -EFAULT; + return 0; +} + static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) { struct ethtool_eeprom eeprom; @@ -1016,8 +1030,7 @@ int dev_ethtool(struct net *net, struct ifreq *ifr) rc = ethtool_nway_reset(dev); break; case ETHTOOL_GLINK: - rc = ethtool_get_value(dev, useraddr, ethcmd, - dev->ethtool_ops->get_link); + rc = ethtool_get_link(dev, useraddr); break; case ETHTOOL_GEEPROM: rc = ethtool_get_eeprom(dev, useraddr); |