[PATCH] mac80211: don't allow scanning in monitor mode
zd1211rw gets confused when the user asks for a scan when the device is
in monitor mode. This patch tightens up the SIWSCAN handler to deny the scan
under these conditions.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/ieee80211_ioctl.c b/net/mac80211/ieee80211_ioctl.c
index d0e1ab5..e7904db 100644
--- a/net/mac80211/ieee80211_ioctl.c
+++ b/net/mac80211/ieee80211_ioctl.c
@@ -697,17 +697,24 @@
if (!netif_running(dev))
return -ENETDOWN;
- if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID) {
- if (sdata->type == IEEE80211_IF_TYPE_STA ||
- sdata->type == IEEE80211_IF_TYPE_IBSS) {
+ switch (sdata->type) {
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS:
+ if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID) {
ssid = sdata->u.sta.ssid;
ssid_len = sdata->u.sta.ssid_len;
- } else if (sdata->type == IEEE80211_IF_TYPE_AP) {
+ }
+ break;
+ case IEEE80211_IF_TYPE_AP:
+ if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID) {
ssid = sdata->u.ap.ssid;
ssid_len = sdata->u.ap.ssid_len;
- } else
- return -EINVAL;
+ }
+ break;
+ default:
+ return -EOPNOTSUPP;
}
+
return ieee80211_sta_req_scan(dev, ssid, ssid_len);
}