From c6c13965f4ffca6163af0c9419095aedc103648c Mon Sep 17 00:00:00 2001 From: Nikolay Aleksandrov Date: Wed, 5 Sep 2012 04:11:28 +0000 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- net/core/net-sysfs.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 72607174ea5a..bcf02f608cbf 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -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; -- 2.20.1