6 GHz: Fix operating class in Supported Operating Classes element

Previously, the secondary channel was set only in presence of HT
capabilities based on HT40+ or HT40-. As HT capabilities and
secondary_channel are not present for the 6 GHz bamd, this causes
incorrect operating class indication in the Supported Operating Classes
element.

Fix this by assigning the secondary channel for bandwidths greater than
20 MHz in the 6 GHz band.

Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org>

src/ap/hostapd.c

@@ -1674,6 +1674,26 @@ static int configured_fixed_chan_to_freq(struct hostapd_iface *iface)
 }
 
 
+static void hostapd_set_6ghz_sec_chan(struct hostapd_iface *iface)
+{
+	int bw, seg0;
+
+	if (!is_6ghz_op_class(iface->conf->op_class))
+		return;
+
+	seg0 = hostapd_get_oper_centr_freq_seg0_idx(iface->conf);
+	bw = center_idx_to_bw_6ghz(seg0);
+	/* Assign the secondary channel if absent in config for
+	 * bandwidths > 20 MHz */
+	if (bw > 20 && !iface->conf->secondary_channel) {
+		if (((iface->conf->channel - 1) / 4) % 2)
+			iface->conf->secondary_channel = -1;
+		else
+			iface->conf->secondary_channel = 1;
+	}
+}
+
+
 static int setup_interface2(struct hostapd_iface *iface)
 {
 	iface->wait_channel_update = 0;
@@ -1693,6 +1713,7 @@ static int setup_interface2(struct hostapd_iface *iface)
 
 			ch_width = op_class_to_ch_width(iface->conf->op_class);
 			hostapd_set_oper_chwidth(iface->conf, ch_width);
+			hostapd_set_6ghz_sec_chan(iface);
 		}
 
 		ret = hostapd_select_hw_mode(iface);