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-rw-r--r--package/kernel/mac80211/patches/315-mac80211-fix-ibss-scan-parameters.patch57
1 files changed, 57 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/315-mac80211-fix-ibss-scan-parameters.patch b/package/kernel/mac80211/patches/315-mac80211-fix-ibss-scan-parameters.patch
new file mode 100644
index 0000000..52fecb9
--- /dev/null
+++ b/package/kernel/mac80211/patches/315-mac80211-fix-ibss-scan-parameters.patch
@@ -0,0 +1,57 @@
+From: Sara Sharon <sara.sharon@intel.com>
+Date: Mon, 25 Jan 2016 15:46:35 +0200
+Subject: [PATCH] mac80211: fix ibss scan parameters
+
+When joining IBSS a full scan should be initiated in order to search
+for existing cell, unless the fixed_channel parameter was set.
+A default channel to create the IBSS on if no cell was found is
+provided as well.
+However - a scan is initiated only on the default channel provided
+regardless of whether ifibss->fixed_channel is set or not, with the
+obvious result of the cell not joining existing IBSS cell that is
+on another channel.
+
+Fixes: 76bed0f43b27 ("mac80211: IBSS fix scan request")
+Signed-off-by: Sara Sharon <sara.sharon@intel.com>
+Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
+---
+
+--- a/net/mac80211/ibss.c
++++ b/net/mac80211/ibss.c
+@@ -7,6 +7,7 @@
+ * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
+ * Copyright 2009, Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2013-2014 Intel Mobile Communications GmbH
++ * Copyright(c) 2016 Intel Deutschland GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+@@ -1483,14 +1484,21 @@ static void ieee80211_sta_find_ibss(stru
+
+ sdata_info(sdata, "Trigger new scan to find an IBSS to join\n");
+
+- num = ieee80211_ibss_setup_scan_channels(local->hw.wiphy,
+- &ifibss->chandef,
+- channels,
+- ARRAY_SIZE(channels));
+ scan_width = cfg80211_chandef_to_scan_width(&ifibss->chandef);
+- ieee80211_request_ibss_scan(sdata, ifibss->ssid,
+- ifibss->ssid_len, channels, num,
+- scan_width);
++
++ if (ifibss->fixed_channel) {
++ num = ieee80211_ibss_setup_scan_channels(local->hw.wiphy,
++ &ifibss->chandef,
++ channels,
++ ARRAY_SIZE(channels));
++ ieee80211_request_ibss_scan(sdata, ifibss->ssid,
++ ifibss->ssid_len, channels,
++ num, scan_width);
++ } else {
++ ieee80211_request_ibss_scan(sdata, ifibss->ssid,
++ ifibss->ssid_len, NULL,
++ 0, scan_width);
++ }
+ } else {
+ int interval = IEEE80211_SCAN_INTERVAL;
+