cfg80211: remove 80+80 MHz rate reporting

These rates are treated the same as 160 MHz in the spec, so
it makes no sense to distinguish them. As no driver uses them
yet, this is also not a problem, just remove them.

In the userspace API the field remains reserved to preserve
API and ABI.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

include/net/cfg80211.h

@@ -875,7 +875,6 @@ int cfg80211_check_station_change(struct wiphy *wiphy,
  * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
  * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 MHz width transmission
  * @RATE_INFO_FLAGS_80_MHZ_WIDTH: 80 MHz width transmission
- * @RATE_INFO_FLAGS_80P80_MHZ_WIDTH: 80+80 MHz width transmission
  * @RATE_INFO_FLAGS_160_MHZ_WIDTH: 160 MHz width transmission
  * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
  * @RATE_INFO_FLAGS_60G: 60GHz MCS
@@ -885,10 +884,9 @@ enum rate_info_flags {
 	RATE_INFO_FLAGS_VHT_MCS			= BIT(1),
 	RATE_INFO_FLAGS_40_MHZ_WIDTH		= BIT(2),
 	RATE_INFO_FLAGS_80_MHZ_WIDTH		= BIT(3),
-	RATE_INFO_FLAGS_80P80_MHZ_WIDTH		= BIT(4),
-	RATE_INFO_FLAGS_160_MHZ_WIDTH		= BIT(5),
-	RATE_INFO_FLAGS_SHORT_GI		= BIT(6),
-	RATE_INFO_FLAGS_60G			= BIT(7),
+	RATE_INFO_FLAGS_160_MHZ_WIDTH		= BIT(4),
+	RATE_INFO_FLAGS_SHORT_GI		= BIT(5),
+	RATE_INFO_FLAGS_60G			= BIT(6),
 };
 
 /**

include/uapi/linux/nl80211.h

@@ -2278,7 +2278,8 @@ struct nl80211_sta_flag_update {
  * @NL80211_RATE_INFO_VHT_MCS: MCS index for VHT (u8)
  * @NL80211_RATE_INFO_VHT_NSS: number of streams in VHT (u8)
  * @NL80211_RATE_INFO_80_MHZ_WIDTH: 80 MHz VHT rate
- * @NL80211_RATE_INFO_80P80_MHZ_WIDTH: 80+80 MHz VHT rate
+ * @NL80211_RATE_INFO_80P80_MHZ_WIDTH: unused - 80+80 is treated the
+ *	same as 160 for purposes of the bitrates
  * @NL80211_RATE_INFO_160_MHZ_WIDTH: 160 MHz VHT rate
  * @__NL80211_RATE_INFO_AFTER_LAST: internal use
  */

net/wireless/nl80211.c

@@ -3614,9 +3614,6 @@ static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
 		if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
 		    nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
 			return false;
-		if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
-		    nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
-			return false;
 		if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
 		    nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
 			return false;

net/wireless/util.c

@@ -1073,8 +1073,7 @@ static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate)
 	if (WARN_ON_ONCE(rate->mcs > 9))
 		return 0;
 
-	idx = rate->flags & (RATE_INFO_FLAGS_160_MHZ_WIDTH |
-			     RATE_INFO_FLAGS_80P80_MHZ_WIDTH) ? 3 :
+	idx = rate->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH ? 3 :
 		  rate->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH ? 2 :
 		  rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH ? 1 : 0;