hostapd: Add second VHT frequency segment config

Add the configuration option vht_oper_centr_freq_seg1_idx
for the second segment of an 80+80 MHz channel and use it
when building the VHT operation IE.

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

hostapd/config_file.c

@@ -2524,6 +2524,9 @@ static int hostapd_config_fill(struct hostapd_config *conf,
 		} else if (os_strcmp(buf, "vht_oper_centr_freq_seg0_idx") == 0)
 		{
 			conf->vht_oper_centr_freq_seg0_idx = atoi(pos);
+		} else if (os_strcmp(buf, "vht_oper_centr_freq_seg1_idx") == 0)
+		{
+			conf->vht_oper_centr_freq_seg1_idx = atoi(pos);
 #endif /* CONFIG_IEEE80211AC */
 		} else if (os_strcmp(buf, "max_listen_interval") == 0) {
 			bss->max_listen_interval = atoi(pos);

hostapd/hostapd.conf

@@ -572,6 +572,12 @@ wmm_ac_vo_acm=0
 # which is channel 42 in 5G band
 #
 #vht_oper_centr_freq_seg0_idx=42
+#
+# center freq = 5 GHz + (5 * index)
+# So index 159 gives center freq 5.795 GHz
+# which is channel 159 in 5G band
+#
+#vht_oper_centr_freq_seg1_idx=159
 
 ##### IEEE 802.1X-2004 related configuration ##################################
 

src/ap/ap_config.h

@@ -506,6 +506,7 @@ struct hostapd_config {
 	int require_vht;
 	u8 vht_oper_chwidth;
 	u8 vht_oper_centr_freq_seg0_idx;
+	u8 vht_oper_centr_freq_seg1_idx;
 };
 
 

src/ap/ieee802_11_vht.c

@@ -68,6 +68,8 @@ u8 * hostapd_eid_vht_operation(struct hostapd_data *hapd, u8 *eid)
 	 */
 	oper->vht_op_info_chan_center_freq_seg0_idx =
 		hapd->iconf->vht_oper_centr_freq_seg0_idx;
+	oper->vht_op_info_chan_center_freq_seg1_idx =
+		hapd->iconf->vht_oper_centr_freq_seg1_idx;
 
 	oper->vht_op_info_chwidth = hapd->iconf->vht_oper_chwidth;