From 4890e3beddfb4a6859c4bb782c9cd05dd94ead82 Mon Sep 17 00:00:00 2001
From: "John W. Linville" <linville@tuxdriver.com>
Date: Wed, 30 Sep 2009 14:50:17 -0400
Subject: [PATCH] wireless: implement basic ethtool support for cfg80211
 devices

Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 net/wireless/Makefile  |  2 +-
 net/wireless/core.c    |  3 +++
 net/wireless/ethtool.c | 24 ++++++++++++++++++++++++
 net/wireless/ethtool.h |  8 ++++++++
 4 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 net/wireless/ethtool.c
 create mode 100644 net/wireless/ethtool.h

diff --git a/net/wireless/Makefile b/net/wireless/Makefile
index c8141505a83..f07c8dc7aab 100644
--- a/net/wireless/Makefile
+++ b/net/wireless/Makefile
@@ -10,7 +10,7 @@ obj-$(CONFIG_WEXT_SPY) += wext-spy.o
 obj-$(CONFIG_WEXT_PRIV) += wext-priv.o
 
 cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o nl80211.o
-cfg80211-y += mlme.o ibss.o sme.o chan.o
+cfg80211-y += mlme.o ibss.o sme.o chan.o ethtool.o
 cfg80211-$(CONFIG_CFG80211_DEBUGFS) += debugfs.o
 cfg80211-$(CONFIG_CFG80211_WEXT) += wext-compat.o wext-sme.o
 
diff --git a/net/wireless/core.c b/net/wireless/core.c
index eb0bb24b99c..07252967be9 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -21,6 +21,7 @@
 #include "sysfs.h"
 #include "debugfs.h"
 #include "wext-compat.h"
+#include "ethtool.h"
 
 /* name for sysfs, %d is appended */
 #define PHY_NAME "phy"
@@ -690,6 +691,8 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
 				wdev->wext.ps = false;
 			}
 #endif
+		if (!dev->ethtool_ops)
+			dev->ethtool_ops = &cfg80211_ethtool_ops;
 		break;
 	case NETDEV_GOING_DOWN:
 		switch (wdev->iftype) {
diff --git a/net/wireless/ethtool.c b/net/wireless/ethtool.c
new file mode 100644
index 00000000000..80d6d0d31f1
--- /dev/null
+++ b/net/wireless/ethtool.c
@@ -0,0 +1,24 @@
+#include <linux/utsname.h>
+#include <net/cfg80211.h>
+#include "ethtool.h"
+
+static void cfg80211_get_drvinfo(struct net_device *dev,
+					struct ethtool_drvinfo *info)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+	strlcpy(info->driver, wiphy_dev(wdev->wiphy)->driver->name,
+		sizeof(info->driver));
+
+	strlcpy(info->version, init_utsname()->release, sizeof(info->version));
+
+	strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
+
+	strlcpy(info->bus_info, dev_name(wiphy_dev(wdev->wiphy)),
+		sizeof(info->bus_info));
+}
+
+const struct ethtool_ops cfg80211_ethtool_ops = {
+	.get_drvinfo = cfg80211_get_drvinfo,
+	.get_link = ethtool_op_get_link,
+};
diff --git a/net/wireless/ethtool.h b/net/wireless/ethtool.h
new file mode 100644
index 00000000000..70cbee1bc62
--- /dev/null
+++ b/net/wireless/ethtool.h
@@ -0,0 +1,8 @@
+#ifndef __CFG80211_ETHTOOL__
+#define __CFG80211_ETHTOOL__
+
+#include <linux/ethtool.h>
+
+extern const struct ethtool_ops cfg80211_ethtool_ops;
+
+#endif /* __CFG80211_ETHTOOL__ */