wifi: mac80211: pass parsed TPE data to drivers

Instead of passing the full TPE elements, in all their glory
and mixed up data formats for HE backward compatibility, parse
them fully into the right values, and pass that to the drivers.

Also introduce proper validation already in mac80211, so that
drivers don't need to do it, and parse the EHT portions.

The code now passes the values in the right order according to
the channel used by an interface, which could also be a subset
of the data advertised by the AP, if we couldn't connect with
the full bandwidth (for whatever reason.)

Also add kunit tests for the more complicated bits of it.

Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Acked-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240506214536.2aa839969b60.I265b28209e0b29772b2f125f7f83de44a4da877b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 37 insertions, 4 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index cafc664ee531..a4efbfb8d796 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -550,6 +550,39 @@ struct ieee80211_fils_discovery {
 	u32 max_interval;
 };
 
+#define IEEE80211_TPE_EIRP_ENTRIES_320MHZ	5
+struct ieee80211_parsed_tpe_eirp {
+	bool valid;
+	s8 power[IEEE80211_TPE_EIRP_ENTRIES_320MHZ];
+	u8 count;
+};
+
+#define IEEE80211_TPE_PSD_ENTRIES_320MHZ	16
+struct ieee80211_parsed_tpe_psd {
+	bool valid;
+	s8 power[IEEE80211_TPE_PSD_ENTRIES_320MHZ];
+	u8 count, n;
+};
+
+/**
+ * struct ieee80211_parsed_tpe - parsed transmit power envelope information
+ * @max_local: maximum local EIRP, one value for 20, 40, 80, 160, 320 MHz each
+ *	(indexed by TX power category)
+ * @max_reg_client: maximum regulatory client EIRP, one value for 20, 40, 80,
+ *	160, 320 MHz each
+ *	(indexed by TX power category)
+ * @psd_local: maximum local power spectral density, one value for each 20 MHz
+ *	subchannel per bss_conf's chanreq.oper
+ *	(indexed by TX power category)
+ * @psd_reg_client: maximum regulatory power spectral density, one value for
+ *	each 20 MHz subchannel per bss_conf's chanreq.oper
+ *	(indexed by TX power category)
+ */
+struct ieee80211_parsed_tpe {
+	struct ieee80211_parsed_tpe_eirp max_local[2], max_reg_client[2];
+	struct ieee80211_parsed_tpe_psd psd_local[2], psd_reg_client[2];
+};
+
 /**
  * struct ieee80211_bss_conf - holds the BSS's changing parameters
  *
@@ -662,8 +695,7 @@ struct ieee80211_fils_discovery {
  * @beacon_tx_rate: The configured beacon transmit rate that needs to be passed
  *	to driver when rate control is offloaded to firmware.
  * @power_type: power type of BSS for 6 GHz
- * @tx_pwr_env: transmit power envelope array of BSS.
- * @tx_pwr_env_num: number of @tx_pwr_env.
+ * @tpe: transmit power envelope information
  * @pwr_reduction: power constraint of BSS.
  * @eht_support: does this BSS support EHT
  * @csa_active: marks whether a channel switch is going on.
@@ -766,8 +798,9 @@ struct ieee80211_bss_conf {
 	u32 unsol_bcast_probe_resp_interval;
 	struct cfg80211_bitrate_mask beacon_tx_rate;
 	enum ieee80211_ap_reg_power power_type;
-	struct ieee80211_tx_pwr_env tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
-	u8 tx_pwr_env_num;
+
+	struct ieee80211_parsed_tpe tpe;
+
 	u8 pwr_reduction;
 	bool eht_support;