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Commit c6c13965 authored by Nikolay Aleksandrov's avatar Nikolay Aleksandrov Committed by David S. Miller
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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: default avatarNikolay Aleksandrov <naleksan@redhat.com>

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f6fe569f

net/core/net-sysfs.c

+15 −3
Original line number Diff line number Diff line
@@ -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;