diff options
| author | Michal Kubecek <mkubecek@suse.cz> | 2019-12-27 15:56:23 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-12-27 16:40:02 -0800 |
| commit | 3d2b847fb99cf2b28aa046e486636e555bc6ed1c (patch) | |
| tree | 216f898fac0e7de4b289a93f5f491492254eeb53 /net/ethtool/ioctl.c | |
| parent | 1b1b1847c8505df2e1dd8804838526bed22a8bd4 (diff) | |
ethtool: provide link state with LINKSTATE_GET request
Implement LINKSTATE_GET netlink request to get link state information.
At the moment, only link up flag as provided by ETHTOOL_GLINK ioctl command
is returned.
LINKSTATE_GET request can be used with NLM_F_DUMP (without device
identification) to request the information for all devices in current
network namespace providing the data.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ethtool/ioctl.c')
| -rw-r--r-- | net/ethtool/ioctl.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c index 36e2ef2d900d..182bffbffa78 100644 --- a/net/ethtool/ioctl.c +++ b/net/ethtool/ioctl.c @@ -1365,12 +1365,12 @@ static int ethtool_nway_reset(struct net_device *dev) static int ethtool_get_link(struct net_device *dev, char __user *useraddr) { struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; + int link = __ethtool_get_link(dev); - if (!dev->ethtool_ops->get_link) - return -EOPNOTSUPP; - - edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev); + if (link < 0) + return link; + edata.data = link; if (copy_to_user(useraddr, &edata, sizeof(edata))) return -EFAULT; return 0; |