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net: add unknown state to sysfs NIC duplex export 

Currently when the NIC duplex state is DUPLEX_UNKNOWN it is exported as
full through sysfs, this patch adds support for DUPLEX_UNKNOWN. It is
handled the same way as in ethtool.

 Signed-off-by: Nikolay Aleksandrov <naleksan@redhat.com>

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov 2012-09-05 04:11:28 +00:00 committed by David S. Miller
parent f6fe569fe0
commit c6c13965f4
1 changed files with 15 additions and 3 deletions
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18
net/core/net-sysfs.c
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@ -166,9 +166,21 @@ static ssize_t show_duplex(struct device *dev,
if (netif_running(netdev)) {
struct ethtool_cmd cmd;
if (!__ethtool_get_settings(netdev, &cmd))
ret = sprintf(buf, "%s\n",
cmd.duplex ? "full" : "half");
if (!__ethtool_get_settings(netdev, &cmd)) {
const char *duplex;
switch (cmd.duplex) {
case DUPLEX_HALF:
duplex = "half";
break;
case DUPLEX_FULL:
duplex = "full";
break;
default:
duplex = "unknown";
break;
}
ret = sprintf(buf, "%s\n", duplex);
}
}
rtnl_unlock();
return ret;