diff options
Diffstat (limited to 'net/mac80211/main.c')
| -rw-r--r-- | net/mac80211/main.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/net/mac80211/main.c b/net/mac80211/main.c index c155c0b69426..2543e48bd813 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -34,7 +34,7 @@ #include "debugfs.h" -bool ieee80211_disable_40mhz_24ghz; +static bool ieee80211_disable_40mhz_24ghz; module_param(ieee80211_disable_40mhz_24ghz, bool, 0644); MODULE_PARM_DESC(ieee80211_disable_40mhz_24ghz, "Disable 40MHz support in the 2.4GHz band"); @@ -112,7 +112,13 @@ bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local) /* This logic needs to match logic in ieee80211_hw_config */ if (local->scan_channel) { chan = local->scan_channel; - channel_type = NL80211_CHAN_NO_HT; + /* If scanning on oper channel, use whatever channel-type + * is currently in use. + */ + if (chan == local->oper_channel) + channel_type = local->_oper_channel_type; + else + channel_type = NL80211_CHAN_NO_HT; } else if (local->tmp_channel) { chan = scan_chan = local->tmp_channel; channel_type = local->tmp_channel_type; @@ -151,7 +157,13 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; if (scan_chan) { chan = scan_chan; - channel_type = NL80211_CHAN_NO_HT; + /* If scanning on oper channel, use whatever channel-type + * is currently in use. + */ + if (chan == local->oper_channel) + channel_type = local->_oper_channel_type; + else + channel_type = NL80211_CHAN_NO_HT; } else if (local->tmp_channel) { chan = scan_chan = local->tmp_channel; channel_type = local->tmp_channel_type; @@ -187,7 +199,8 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) changed |= IEEE80211_CONF_CHANGE_SMPS; } - if (scan_chan) + if ((local->scanning & SCAN_SW_SCANNING) || + (local->scanning & SCAN_HW_SCANNING)) power = chan->max_power; else power = local->power_constr_level ? @@ -710,6 +723,18 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) } channels += sband->n_channels; + /* + * Since ieee80211_disable_40mhz_24ghz is global, we can + * modify the sband's ht data even if the driver uses a + * global structure for that. + */ + if (ieee80211_disable_40mhz_24ghz && + band == IEEE80211_BAND_2GHZ && + sband->ht_cap.ht_supported) { + sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; + sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; + } + if (max_bitrates < sband->n_bitrates) max_bitrates = sband->n_bitrates; supp_ht = supp_ht || sband->ht_cap.ht_supported; |