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cfg80211: allow drivers to selectively disable 80/160 MHz

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Some drivers might support 80 or 160 MHz only on some
channels for whatever reason, so allow them to disable
these channel widths. Also maintain the new flags when
regulatory bandwidth limitations would disable these
wide channels.

Reviewed-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2012-12-12 17:50:39 +01:00
parent 30eb1dc2c4
commit c7a6ee27ab
3 changed files with 32 additions and 1 deletions
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8
net/wireless/reg.c
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@@ -866,6 +866,10 @@ static void handle_channel(struct wiphy *wiphy,
if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40))
bw_flags = IEEE80211_CHAN_NO_HT40;
if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(80))
bw_flags |= IEEE80211_CHAN_NO_80MHZ;
if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(160))
bw_flags |= IEEE80211_CHAN_NO_160MHZ;
if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
request_wiphy && request_wiphy == wiphy &&
@@ -1264,6 +1268,10 @@ static void handle_channel_custom(struct wiphy *wiphy,
if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40))
bw_flags = IEEE80211_CHAN_NO_HT40;
if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(80))
bw_flags |= IEEE80211_CHAN_NO_80MHZ;
if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(160))
bw_flags |= IEEE80211_CHAN_NO_160MHZ;
chan->flags |= map_regdom_flags(reg_rule->flags) | bw_flags;
chan->max_antenna_gain = (int) MBI_TO_DBI(power_rule->max_antenna_gain);