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cfg80211: Fix GO Concurrent relaxation on UNII-3
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At some locations, channels 149-165 are considered a single
bundle, while at some other locations, e.g., Indonesia, channels
149-161 are considered a single bundle, while channel 165 belongs
to a different bundle. This means that:

1. A station interface connection to an AP on channel 165 allows
   the instantiation of a P2P GO on channels 149-165.
2. A station interface connection to an AP on channels 149-161
   does NOT allow the instantiation of a P2P GO on channel 165.

Fix this.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Ilan Peer authored and Johannes Berg committed Apr 25, 2014
1 parent bc3ce0b commit 46d5372
Showing 1 changed file with 17 additions and 1 deletion.
18 changes: 17 additions & 1 deletion net/wireless/chan.c
Original file line number Diff line number Diff line change
Expand Up @@ -750,8 +750,24 @@ static bool cfg80211_go_permissive_chan(struct cfg80211_registered_device *rdev,
r1 = cfg80211_get_unii(chan->center_freq);
r2 = cfg80211_get_unii(other_chan->center_freq);

if (r1 != -EINVAL && r1 == r2)
if (r1 != -EINVAL && r1 == r2) {
/*
* At some locations channels 149-165 are considered a
* bundle, but at other locations, e.g., Indonesia,
* channels 149-161 are considered a bundle while
* channel 165 is left out and considered to be in a
* different bundle. Thus, in case that there is a
* station interface connected to an AP on channel 165,
* it is assumed that channels 149-161 are allowed for
* GO operations. However, having a station interface
* connected to an AP on channels 149-161, does not
* allow GO operation on channel 165.
*/
if (chan->center_freq == 5825 &&
other_chan->center_freq != 5825)
continue;
return true;
}
}

return false;
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