AP: Add user configuration for TWT responder role

Add user configuration he_twt_responder for enabling/disabling TWT
responder role, in addition to checking the driver's capability. The
default configuration is to enable TWT responder role when the driver
supports this.

Signed-off-by: Mohammad Asaad Akram <asadkrm@codeaurora.org>

hostapd/config_file.c

@@ -3511,6 +3511,8 @@ static int hostapd_config_fill(struct hostapd_config *conf,
 		conf->he_op.he_default_pe_duration = atoi(pos);
 	} else if (os_strcmp(buf, "he_twt_required") == 0) {
 		conf->he_op.he_twt_required = atoi(pos);
+	} else if (os_strcmp(buf, "he_twt_responder") == 0) {
+		conf->he_op.he_twt_responder = atoi(pos);
 	} else if (os_strcmp(buf, "he_rts_threshold") == 0) {
 		conf->he_op.he_rts_threshold = atoi(pos);
 	} else if (os_strcmp(buf, "he_basic_mcs_nss_set") == 0) {

hostapd/hostapd.conf

@@ -831,6 +831,11 @@ wmm_ac_vo_acm=0
 # 1 = required
 #he_twt_required=0
 
+#he_twt_responder: Whether TWT (HE) responder is enabled
+# 0 = disabled
+# 1 = enabled if supported by the driver (default)
+#he_twt_responder=1
+
 #he_rts_threshold: Duration of STA transmission
 # 0 = not set (default)
 # unsigned integer = duration in units of 16 us

src/ap/ap_config.c

@@ -274,6 +274,7 @@ 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_op.he_twt_responder = 1;
 	conf->he_6ghz_max_mpdu = 2;
 	conf->he_6ghz_max_ampdu_len_exp = 7;
 	conf->he_6ghz_rx_ant_pat = 1;

src/ap/ap_config.h

@@ -914,6 +914,7 @@ struct he_operation {
 	u8 he_bss_color_partial;
 	u8 he_default_pe_duration;
 	u8 he_twt_required;
+	u8 he_twt_responder;
 	u16 he_rts_threshold;
 	u16 he_basic_mcs_nss_set;
 };

src/ap/ieee802_11_he.c

@@ -514,5 +514,6 @@ int hostapd_get_he_twt_responder(struct hostapd_data *hapd,
 
 	mac_cap = hapd->iface->current_mode->he_capab[mode].mac_cap;
 
-	return !!(mac_cap[HE_MAC_CAPAB_0] & HE_MACCAP_TWT_RESPONDER);
+	return !!(mac_cap[HE_MAC_CAPAB_0] & HE_MACCAP_TWT_RESPONDER) &&
+		hapd->iface->conf->he_op.he_twt_responder;
 }