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authorLuis R. Rodriguez <lrodriguez@atheros.com>2010-01-14 13:27:46 -0500
committerJohn W. Linville <linville@tuxdriver.com>2010-01-14 18:16:56 -0500
commita0f2e0fca1e72c1de07e834be05b61d33842253e (patch)
tree02f1ecd172092dec6dec9a13806daccf3a53b290 /net/wireless
parentc99445b14054e0c4ed4715df1dad1fc608cbab46 (diff)
cfg80211: Ingore country IEs with a zero set of number of channels
Previous to this and the last patch, titled, "cfg80211: Fix 2 GHz subband calculation for country IEs" we would end up treating these IEs as single channel units. These are in fact just bogus IE triplets so ignore the entire IE if these are found. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/reg.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index f0859eada75..f3b77f7b8e3 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -585,6 +585,9 @@ static int max_subband_chan(int orig_cur_chan,
break;
}
+ if (triplet->chans.num_channels == 0)
+ return 0;
+
/* Monitonically increasing channel order */
if (triplet->chans.first_channel <= end_subband_chan)
return 0;
@@ -737,6 +740,9 @@ static struct ieee80211_regdomain *country_ie_2_rd(
break;
}
+ if (triplet->chans.num_channels == 0)
+ return NULL;
+
/* 2 GHz */
if (triplet->chans.first_channel <= 14)
end_channel = triplet->chans.first_channel +