From: Luis R. Rodriguez Date: Thu, 7 Jan 2010 22:24:55 +0000 (-0500) Subject: cfg80211: fix 2 GHz subband calculation for country IEs X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=e99c7cd57b2481ee36b2338040e3ce1cd17e0763;p=openwrt%2Fstaging%2Fblogic.git cfg80211: fix 2 GHz subband calculation for country IEs Country IEs triplets are getting an extra channel with the current count. This does not affect regulatory because we always took the intersection between what the AP gave and what CRDA believed is correct. This however does fix processing some Country IEs with multiple sequential 2 GHz triplets. Since our parser and the spec mandates all channels be monitonically increasing we would drop the IE after noticing the second triplet begins on a channel already processed. APs that send these type of country IEs seems rare though. Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- diff --git a/net/wireless/reg.c b/net/wireless/reg.c index a5c2d3a6cbb2..f0859eada758 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -740,7 +740,7 @@ static struct ieee80211_regdomain *country_ie_2_rd( /* 2 GHz */ if (triplet->chans.first_channel <= 14) end_channel = triplet->chans.first_channel + - triplet->chans.num_channels; + triplet->chans.num_channels - 1; else /* * 5 GHz -- For example in country IEs if the first @@ -863,7 +863,7 @@ static struct ieee80211_regdomain *country_ie_2_rd( /* 2 GHz */ if (triplet->chans.first_channel <= 14) end_channel = triplet->chans.first_channel + - triplet->chans.num_channels; + triplet->chans.num_channels -1; else end_channel = triplet->chans.first_channel + (4 * (triplet->chans.num_channels - 1));