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mac80211: stop toggling IEEE80211_HT_CAP_SUP_WIDTH_20_40

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For VHT, many more bandwidth changes are possible. As a first
step, stop toggling the IEEE80211_HT_CAP_SUP_WIDTH_20_40 flag
in the HT capabilities and instead introduce a bandwidth field
indicating the currently usable bandwidth to transmit to the
station. Of course, make all drivers use it.

To achieve this, make ieee80211_ht_cap_ie_to_sta_ht_cap() get
the station as an argument, rather than the new capabilities,
so it can set up the new bandwidth field.

If the station is a VHT station and VHT bandwidth is in use,
also set the bandwidth accordingly.

Doing this allows us to get rid of the supports_40mhz flag as
the HT capabilities now reflect the true capability instead of
the current setting.

While at it, also fix ieee80211_ht_cap_ie_to_sta_ht_cap() to not
ignore HT cap overrides when MCS TX isn't supported (not that it
really happens...)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2013-02-07 11:47:44 +01:00
parent 4a34215ef7
commit e1a0c6b3a4
27 changed files with 184 additions and 158 deletions
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5
drivers/net/wireless/rtlwifi/rc.c
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@@ -116,9 +116,8 @@ static void _rtl_rc_rate_set_series(struct rtl_priv *rtlpriv,
if (txrc->short_preamble)
rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
if (mac->opmode == NL80211_IFTYPE_AP ||
mac->opmode == NL80211_IFTYPE_ADHOC) {
if (sta && (sta->ht_cap.cap &
IEEE80211_HT_CAP_SUP_WIDTH_20_40))
mac->opmode == NL80211_IFTYPE_ADHOC) {
if (sta && (sta->bandwidth >= IEEE80211_STA_RX_BW_40))
rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
} else {
if (mac->bw_40)