hostapd: Add HE 6 GHz band capability configuration

Enable user to configure Maximum MPDU Length, Maximum A-MPDU Length
Exponent, Rx Antenna Pattern Consistency, and Tx Antenna Pattern
Consistency of 6 GHz capability through config file.

Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org>

hostapd/config_file.c

@@ -3557,6 +3557,14 @@ static int hostapd_config_fill(struct hostapd_config *conf,
 		conf->he_oper_centr_freq_seg0_idx = atoi(pos);
 	} else if (os_strcmp(buf, "he_oper_centr_freq_seg1_idx") == 0) {
 		conf->he_oper_centr_freq_seg1_idx = atoi(pos);
+	} else if (os_strcmp(buf, "he_6ghz_max_mpdu") == 0) {
+		conf->he_6ghz_max_mpdu = atoi(pos);
+	} else if (os_strcmp(buf, "he_6ghz_max_ampdu_len_exp") == 0) {
+		conf->he_6ghz_max_ampdu_len_exp = atoi(pos);
+	} else if (os_strcmp(buf, "he_6ghz_rx_ant_pat") == 0) {
+		conf->he_6ghz_rx_ant_pat = atoi(pos);
+	} else if (os_strcmp(buf, "he_6ghz_tx_ant_pat") == 0) {
+		conf->he_6ghz_tx_ant_pat = atoi(pos);
 #endif /* CONFIG_IEEE80211AX */
 	} else if (os_strcmp(buf, "max_listen_interval") == 0) {
 		bss->max_listen_interval = atoi(pos);

hostapd/hostapd.conf

@@ -880,6 +880,42 @@ wmm_ac_vo_acm=0
 #he_spr_srg_obss_pd_min_offset
 #he_spr_srg_obss_pd_max_offset
 
+#he_6ghz_max_mpdu: Maximum MPDU Length of HE 6 GHz band capabilities.
+# Indicates maximum MPDU length
+# 0 = 3895 octets
+# 1 = 7991 octets
+# 2 = 11454 octets (default)
+#he_6ghz_max_mpdu=2
+#
+#he_6ghz_max_ampdu_len_exp: Maximum A-MPDU Length Exponent of HE 6 GHz band
+# capabilities. Indicates the maximum length of A-MPDU pre-EOF padding that
+# the STA can receive. This field is an integer in the range of 0 to 7.
+# The length defined by this field is equal to
+# 2 pow(13 + Maximum A-MPDU Length Exponent) -1 octets
+# 0 = AMPDU length of 8k
+# 1 = AMPDU length of 16k
+# 2 = AMPDU length of 32k
+# 3 = AMPDU length of 65k
+# 4 = AMPDU length of 131k
+# 5 = AMPDU length of 262k
+# 6 = AMPDU length of 524k
+# 7 = AMPDU length of 1048k (default)
+#he_6ghz_max_ampdu_len_exp=7
+#
+#he_6ghz_rx_ant_pat: Rx Antenna Pattern Consistency of HE 6 GHz capability.
+# Indicates the possibility of Rx antenna pattern change
+# 0 = Rx antenna pattern might change during the lifetime of an association
+# 1 = Rx antenna pattern does not change during the lifetime of an association
+#     (default)
+#he_6ghz_rx_ant_pat=1
+#
+#he_6ghz_tx_ant_pat: Tx Antenna Pattern Consistency of HE 6 GHz capability.
+# Indicates the possibility of Tx antenna pattern change
+# 0 = Tx antenna pattern might change during the lifetime of an association
+# 1 = Tx antenna pattern does not change during the lifetime of an association
+#     (default)
+#he_6ghz_tx_ant_pat=1
+
 ##### IEEE 802.1X-2004 related configuration ##################################
 
 # Require IEEE 802.1X authorization

src/ap/ap_config.c

@@ -268,6 +268,10 @@ struct hostapd_config * hostapd_config_defaults(void)
 	conf->he_op.he_bss_color_disabled = 1;
 	conf->he_op.he_bss_color_partial = 0;
 	conf->he_op.he_bss_color = 1;
+	conf->he_6ghz_max_mpdu = 2;
+	conf->he_6ghz_max_ampdu_len_exp = 7;
+	conf->he_6ghz_rx_ant_pat = 1;
+	conf->he_6ghz_tx_ant_pat = 1;
 #endif /* CONFIG_IEEE80211AX */
 
 	/* The third octet of the country string uses an ASCII space character

src/ap/ap_config.h

@@ -1044,6 +1044,10 @@ struct hostapd_config {
 	u8 he_oper_chwidth;
 	u8 he_oper_centr_freq_seg0_idx;
 	u8 he_oper_centr_freq_seg1_idx;
+	u8 he_6ghz_max_mpdu;
+	u8 he_6ghz_max_ampdu_len_exp;
+	u8 he_6ghz_rx_ant_pat;
+	u8 he_6ghz_tx_ant_pat;
 #endif /* CONFIG_IEEE80211AX */
 
 	/* VHT enable/disable config from CHAN_SWITCH */

src/ap/hostapd.c

@@ -1701,6 +1701,9 @@ static int setup_interface2(struct hostapd_iface *iface)
 			return 0;
 		}
 		ret = hostapd_check_edmg_capab(iface);
+		if (ret < 0)
+			goto fail;
+		ret = hostapd_check_he_6ghz_capab(iface);
 		if (ret < 0)
 			goto fail;
 		ret = hostapd_check_ht_capab(iface);

src/ap/hw_features.c

@@ -732,6 +732,51 @@ int hostapd_check_edmg_capab(struct hostapd_iface *iface)
 }
 
 
+int hostapd_check_he_6ghz_capab(struct hostapd_iface *iface)
+{
+#ifdef CONFIG_IEEE80211AX
+	struct he_capabilities *he_cap;
+	u16 hw;
+
+	if (!iface->current_mode || !is_6ghz_freq(iface->freq))
+		return 0;
+
+	he_cap = &iface->current_mode->he_capab[IEEE80211_MODE_AP];
+	hw = he_cap->he_6ghz_capa;
+	if (iface->conf->he_6ghz_max_mpdu >
+	    ((hw & HE_6GHZ_BAND_CAP_MAX_MPDU_LEN_MASK) >>
+	     HE_6GHZ_BAND_CAP_MAX_MPDU_LEN_SHIFT)) {
+		wpa_printf(MSG_ERROR,
+			   "The driver does not support the configured HE 6 GHz Max MPDU length");
+		return -1;
+	}
+
+	if (iface->conf->he_6ghz_max_ampdu_len_exp >
+	    ((hw & HE_6GHZ_BAND_CAP_MAX_AMPDU_LEN_EXP_MASK) >>
+	     HE_6GHZ_BAND_CAP_MAX_AMPDU_LEN_EXP_SHIFT)) {
+		wpa_printf(MSG_ERROR,
+			   "The driver does not support the configured HE 6 GHz Max AMPDU Length Exponent");
+		return -1;
+	}
+
+	if (iface->conf->he_6ghz_rx_ant_pat &&
+	    !(hw & HE_6GHZ_BAND_CAP_RX_ANTPAT_CONS)) {
+		wpa_printf(MSG_ERROR,
+			   "The driver does not support the configured HE 6 GHz Rx Antenna Pattern");
+		return -1;
+	}
+
+	if (iface->conf->he_6ghz_tx_ant_pat &&
+	    !(hw & HE_6GHZ_BAND_CAP_TX_ANTPAT_CONS)) {
+		wpa_printf(MSG_ERROR,
+			   "The driver does not support the configured HE 6 GHz Tx Antenna Pattern");
+		return -1;
+	}
+#endif /* CONFIG_IEEE80211AX */
+	return 0;
+}
+
+
 static int hostapd_is_usable_chan(struct hostapd_iface *iface,
 				  int frequency, int primary)
 {

src/ap/hw_features.h

@@ -22,6 +22,7 @@ int hostapd_hw_get_freq(struct hostapd_data *hapd, int chan);
 int hostapd_hw_get_channel(struct hostapd_data *hapd, int freq);
 int hostapd_check_ht_capab(struct hostapd_iface *iface);
 int hostapd_check_edmg_capab(struct hostapd_iface *iface);
+int hostapd_check_he_6ghz_capab(struct hostapd_iface *iface);
 int hostapd_prepare_rates(struct hostapd_iface *iface,
 			  struct hostapd_hw_modes *mode);
 void hostapd_stop_setup_timers(struct hostapd_iface *iface);
@@ -85,6 +86,11 @@ static inline int hostapd_hw_skip_mode(struct hostapd_iface *iface,
 	return 0;
 }
 
+static inline int hostapd_check_he_6ghz_capab(struct hostapd_iface *iface)
+{
+	return 0;
+}
+
 #endif /* NEED_AP_MLME */
 
 #endif /* HW_FEATURES_H */

src/ap/ieee802_11_he.c

@@ -313,6 +313,7 @@ u8 * hostapd_eid_spatial_reuse(struct hostapd_data *hapd, u8 *eid)
 
 u8 * hostapd_eid_he_6ghz_band_cap(struct hostapd_data *hapd, u8 *eid)
 {
+	struct hostapd_config *conf = hapd->iface->conf;
 	struct hostapd_hw_modes *mode = hapd->iface->current_mode;
 	struct he_capabilities *he_cap;
 	struct ieee80211_he_6ghz_band_cap *cap;
@@ -324,8 +325,18 @@ u8 * hostapd_eid_he_6ghz_band_cap(struct hostapd_data *hapd, u8 *eid)
 		return eid;
 
 	he_cap = &mode->he_capab[IEEE80211_MODE_AP];
-	capab = he_cap->he_6ghz_capa;
+	capab = he_cap->he_6ghz_capa & HE_6GHZ_BAND_CAP_MIN_MPDU_START;
+	capab |= (conf->he_6ghz_max_ampdu_len_exp <<
+		  HE_6GHZ_BAND_CAP_MAX_AMPDU_LEN_EXP_SHIFT) &
+		HE_6GHZ_BAND_CAP_MAX_AMPDU_LEN_EXP_MASK;
+	capab |= (conf->he_6ghz_max_mpdu <<
+		  HE_6GHZ_BAND_CAP_MAX_MPDU_LEN_SHIFT) &
+		HE_6GHZ_BAND_CAP_MAX_MPDU_LEN_MASK;
 	capab |= HE_6GHZ_BAND_CAP_SMPS_DISABLED;
+	if (conf->he_6ghz_rx_ant_pat)
+		capab |= HE_6GHZ_BAND_CAP_RX_ANTPAT_CONS;
+	if (conf->he_6ghz_tx_ant_pat)
+		capab |= HE_6GHZ_BAND_CAP_TX_ANTPAT_CONS;
 
 	pos = eid;
 	*pos++ = WLAN_EID_EXTENSION;