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[PATCHv6,09/18] mac80211: return if IBSS chandef can not be used

Message ID 1373295366-12823-10-git-send-email-siwu@hrz.tu-chemnitz.de (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Simon Wunderlich July 8, 2013, 2:55 p.m. UTC 
This was originally designed to fail when a 40+/40- mode can not be
used, but basic modes (such as 5/10/20 MHz) must be handled
with an error.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
---
 net/mac80211/ibss.c |    8 ++++++++
 1 file changed, 8 insertions(+)
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Patch

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index b99d948..7941e8d 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -85,6 +85,14 @@  static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 
 	chandef = ifibss->chandef;
 	if (!cfg80211_reg_can_beacon(local->hw.wiphy, &chandef)) {
+		if (chandef.width == NL80211_CHAN_WIDTH_5 ||
+		    chandef.width == NL80211_CHAN_WIDTH_10 ||
+		    chandef.width == NL80211_CHAN_WIDTH_20_NOHT ||
+		    chandef.width == NL80211_CHAN_WIDTH_20) {
+			sdata_info(sdata,
+				   "Failed to join IBSS, beacons forbidden\n");
+			return;
+		}
 		chandef.width = NL80211_CHAN_WIDTH_20;
 		chandef.center_freq1 = chan->center_freq;
 	}