From 4d36ec58239eec44d77839ef6c25108efcbbb58c Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 27 Oct 2009 20:59:55 +0100 Subject: mac80211: split hardware scan by band There's currently a very odd bug in mac80211 -- a hardware scan that is done while the hardware is really operating on 2.4 GHz will include CCK rates in the probe request frame, even on 5 GHz (if the driver uses the mac80211 IEs). Vice versa, if the hardware is operating on 5 GHz the 2.4 GHz probe requests will not include CCK rates even though they should. Fix this by splitting up cfg80211 scan requests by band -- recalculating the IEs every time -- and requesting only per-band scans from the driver. Apparently this bug hasn't been a problem yet, but it is imaginable that some older access points get confused if confronted with such behaviour. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/ieee80211_i.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'net/mac80211/ieee80211_i.h') diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 60c2822802f0..6365079e6375 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -667,10 +667,9 @@ struct ieee80211_local { unsigned long scanning; struct cfg80211_ssid scan_ssid; struct cfg80211_scan_request *int_scan_req; - struct cfg80211_scan_request *scan_req; + struct cfg80211_scan_request *scan_req, *hw_scan_req; struct ieee80211_channel *scan_channel; - const u8 *orig_ies; - int orig_ies_len; + enum ieee80211_band hw_scan_band; int scan_channel_idx; int scan_ies_len; @@ -1050,7 +1049,8 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, u8 *extra, size_t extra_len, const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx); int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, - const u8 *ie, size_t ie_len); + const u8 *ie, size_t ie_len, + enum ieee80211_band band); void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, const u8 *ssid, size_t ssid_len, const u8 *ie, size_t ie_len); -- cgit v1.2.3