From 43b19952de54b0fccfcdc5968891ebe550367fe8 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 7 Oct 2010 13:10:30 +0200
Subject: nl80211: use new genl helpers for WDS

Bill Jordan's patch to allow setting the WDS
peer crossed with my patch removing all the
boilerplate code in nl80211, and consequently
he didn't make use of it yet. Fix that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 524f554..4fed166 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -876,48 +876,25 @@ static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
 
 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
 {
-	struct cfg80211_registered_device *rdev;
-	struct wireless_dev *wdev;
-	struct net_device *dev;
+	struct cfg80211_registered_device *rdev = info->user_ptr[0];
+	struct net_device *dev = info->user_ptr[1];
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	u8 *bssid;
-	int err;
 
 	if (!info->attrs[NL80211_ATTR_MAC])
 		return -EINVAL;
 
-	rtnl_lock();
-
-	err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
-	if (err)
-		goto unlock_rtnl;
-
-	wdev = dev->ieee80211_ptr;
-
-	if (netif_running(dev)) {
-		err = -EBUSY;
-		goto out;
-	}
+	if (netif_running(dev))
+		return -EBUSY;
 
-	if (!rdev->ops->set_wds_peer) {
-		err = -EOPNOTSUPP;
-		goto out;
-	}
+	if (!rdev->ops->set_wds_peer)
+		return -EOPNOTSUPP;
 
-	if (wdev->iftype != NL80211_IFTYPE_WDS) {
-		err = -EOPNOTSUPP;
-		goto out;
-	}
+	if (wdev->iftype != NL80211_IFTYPE_WDS)
+		return -EOPNOTSUPP;
 
 	bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
-	err = rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
-
-out:
-	cfg80211_unlock_rdev(rdev);
-	dev_put(dev);
-unlock_rtnl:
-	rtnl_unlock();
-
-	return err;
+	return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
 }
 
 
@@ -4860,6 +4837,8 @@ static struct genl_ops nl80211_ops[] = {
 		.doit = nl80211_set_wds_peer,
 		.policy = nl80211_policy,
 		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL80211_FLAG_NEED_NETDEV |
+				  NL80211_FLAG_NEED_RTNL,
 	},
 };
 
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