nl80211: Add event for authentication/association timeout

SME needs to be notified when the authentication or association
attempt times out and MLME has stopped processing in order to allow
the SME to decide what to do next.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 82 insertions, 0 deletions

diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 1407244a647..42184361a10 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -44,6 +44,33 @@ void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len)
 }
 EXPORT_SYMBOL(cfg80211_send_disassoc);
 
+static void cfg80211_wext_disconnected(struct net_device *dev)
+{
+#ifdef CONFIG_WIRELESS_EXT
+	union iwreq_data wrqu;
+	memset(&wrqu, 0, sizeof(wrqu));
+	wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+#endif
+}
+
+void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
+{
+	struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+	nl80211_send_auth_timeout(rdev, dev, addr);
+	cfg80211_wext_disconnected(dev);
+}
+EXPORT_SYMBOL(cfg80211_send_auth_timeout);
+
+void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
+{
+	struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+	nl80211_send_assoc_timeout(rdev, dev, addr);
+	cfg80211_wext_disconnected(dev);
+}
+EXPORT_SYMBOL(cfg80211_send_assoc_timeout);
+
 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
 				  enum nl80211_key_type key_type, int key_id,
 				  const u8 *tsc)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 3b21b3e89e9..b1fc98225fd 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -121,6 +121,7 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
 	[NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 	[NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 	[NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
+	[NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 };
 
 /* IE validation */
@@ -3695,6 +3696,54 @@ void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
 				NL80211_CMD_DISASSOCIATE);
 }
 
+void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
+			       struct net_device *netdev, int cmd,
+			       const u8 *addr)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
+	if (!msg)
+		return;
+
+	hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
+	if (!hdr) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
+	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
+	NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
+	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+
+	if (genlmsg_end(msg, hdr) < 0) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
+	return;
+
+ nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	nlmsg_free(msg);
+}
+
+void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
+			       struct net_device *netdev, const u8 *addr)
+{
+	nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
+				  addr);
+}
+
+void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
+				struct net_device *netdev, const u8 *addr)
+{
+	nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, addr);
+}
+
 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
 			     struct net_device *netdev, const u8 *bssid,
 			     gfp_t gfp)
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 17d2d8bfaf7..5c12ad13499 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -23,6 +23,12 @@ extern void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
 extern void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
 				  struct net_device *netdev,
 				  const u8 *buf, size_t len);
+extern void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
+				      struct net_device *netdev,
+				      const u8 *addr);
+extern void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
+				       struct net_device *netdev,
+				       const u8 *addr);
 extern void
 nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
 			    struct net_device *netdev, const u8 *addr,