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[PATCH] regulatory: enable channels 52-144 for world roaming

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From: Johannes Berg <johannes.berg@xxxxxxxxx>

If allowed in a country, these channels typically require
DFS so mark them as such. Channel 144 is a bit special,
it's coming in use now to allow more VHT 80 channels, but
world roaming/passive scanning is acceptable anyway. It
seems fairly unlikely that it'll be used as the control
channel for a VHT AP, but it needs to be present to allow
a full VHT connection to an AP that uses it as one of the
secondary channels.

Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
 net/wireless/reg.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index dee9ab4..69cb4cb 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -188,7 +188,11 @@ static const struct ieee80211_regdomain world_regdom = {
                         NL80211_RRF_PASSIVE_SCAN |
                         NL80211_RRF_NO_IBSS),
 
-		/* NB: 5260 MHz - 5700 MHz requires DFS */
+		/* IEEE 802.11a, channel 52..144 - DFS required */
+		REG_RULE(5760-10, 5720+10, 80, 6, 20,
+			NL80211_RRF_PASSIVE_SCAN |
+			NL80211_RRF_NO_IBSS |
+			NL80211_RRF_DFS),
 
 		/* IEEE 802.11a, channel 149..165 */
 		REG_RULE(5745-10, 5825+10, 80, 6, 20,
-- 
1.8.0

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