From: Jouni Malinen Date: Thu, 11 Jun 2009 15:19:45 +0000 (+0300) Subject: mac80211: Do not try to associate with an empty SSID X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=68f2d02669f7102be80aae47155f45e18950d223;p=openwrt%2Fstaging%2Fblogic.git mac80211: Do not try to associate with an empty SSID It looks like some programs (e.g., NM) are setting an empty SSID with SIOCSIWESSID in some cases. This seems to trigger mac80211 to try to associate with an invalid configuration (wildcard SSID) which will result in failing associations (or odd issues, potentially including kernel panic with some drivers) if the AP were to actually accept this anyway). Only start association process if the SSID is actually set. This speeds up connection with NM in number of cases and avoids sending out broken association request frames. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index d779c57a8220..e5de9cea0034 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2445,6 +2445,14 @@ void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata) ieee80211_set_disassoc(sdata, true, true, WLAN_REASON_DEAUTH_LEAVING); + if (ifmgd->ssid_len == 0) { + /* + * Only allow association to be started if a valid SSID + * is configured. + */ + return; + } + if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) || ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE) set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request);