P2P: Enable 40 MHz support for autonomous P2P group addition

Add optional "ht40" argument for p2p_group_add command to enable 40 MHz
in 5GHz band. This configures the secondary channel, when HT support is
enabled and if the HW supports 40 MHz channel width.

Signed-hostap: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>

src/p2p/p2p.h

@@ -75,6 +75,8 @@ struct p2p_go_neg_results {
 	 */
 	int freq;
 
+	int ht40;
+
 	/**
 	 * ssid - SSID of the group
 	 */

wpa_supplicant/ap.c

@@ -99,6 +99,18 @@ static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
 
 		if (!no_ht && mode && mode->ht_capab) {
 			conf->ieee80211n = 1;
+#ifdef CONFIG_P2P
+			if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A &&
+			    (mode->ht_capab &
+			     HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) &&
+			    ssid->ht40)
+				conf->secondary_channel =
+					wpas_p2p_get_ht40_mode(wpa_s, mode,
+							       conf->channel);
+			if (conf->secondary_channel)
+				conf->ht_capab |=
+					HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET;
+#endif /* CONFIG_P2P */
 
 			/*
 			 * white-list capabilities that won't cause issues

wpa_supplicant/config_ssid.h

@@ -364,6 +364,8 @@ struct wpa_ssid {
 	 */
 	int frequency;
 
+	int ht40;
+
 	/**
 	 * wpa_ptk_rekey - Maximum lifetime for PTK in seconds
 	 *

wpa_supplicant/ctrl_iface.c

@@ -3482,7 +3482,7 @@ static int p2p_ctrl_invite(struct wpa_supplicant *wpa_s, char *cmd)
 
 
 static int p2p_ctrl_group_add_persistent(struct wpa_supplicant *wpa_s,
-					 char *cmd, int freq)
+					 char *cmd, int freq, int ht40)
 {
 	int id;
 	struct wpa_ssid *ssid;
@@ -3496,26 +3496,31 @@ static int p2p_ctrl_group_add_persistent(struct wpa_supplicant *wpa_s,
 		return -1;
 	}
 
-	return wpas_p2p_group_add_persistent(wpa_s, ssid, 0, freq);
+	return wpas_p2p_group_add_persistent(wpa_s, ssid, 0, freq, ht40);
 }
 
 
 static int p2p_ctrl_group_add(struct wpa_supplicant *wpa_s, char *cmd)
 {
-	int freq = 0;
+	int freq = 0, ht40;
 	char *pos;
 
 	pos = os_strstr(cmd, "freq=");
 	if (pos)
 		freq = atoi(pos + 5);
 
+	ht40 = os_strstr(cmd, "ht40") != NULL;
+
 	if (os_strncmp(cmd, "persistent=", 11) == 0)
-		return p2p_ctrl_group_add_persistent(wpa_s, cmd + 11, freq);
+		return p2p_ctrl_group_add_persistent(wpa_s, cmd + 11, freq,
+						     ht40);
 	if (os_strcmp(cmd, "persistent") == 0 ||
 	    os_strncmp(cmd, "persistent ", 11) == 0)
-		return wpas_p2p_group_add(wpa_s, 1, freq);
+		return wpas_p2p_group_add(wpa_s, 1, freq, ht40);
 	if (os_strncmp(cmd, "freq=", 5) == 0)
-		return wpas_p2p_group_add(wpa_s, 0, freq);
+		return wpas_p2p_group_add(wpa_s, 0, freq, ht40);
+	if (ht40)
+		return wpas_p2p_group_add(wpa_s, 0, freq, ht40);
 
 	wpa_printf(MSG_DEBUG, "CTRL: Invalid P2P_GROUP_ADD parameters '%s'",
 		   cmd);
@@ -4313,7 +4318,7 @@ char * wpa_supplicant_ctrl_iface_process(struct wpa_supplicant *wpa_s,
 		if (wpas_p2p_group_remove(wpa_s, buf + 17))
 			reply_len = -1;
 	} else if (os_strcmp(buf, "P2P_GROUP_ADD") == 0) {
-		if (wpas_p2p_group_add(wpa_s, 0, 0))
+		if (wpas_p2p_group_add(wpa_s, 0, 0, 0))
 			reply_len = -1;
 	} else if (os_strncmp(buf, "P2P_GROUP_ADD ", 14) == 0) {
 		if (p2p_ctrl_group_add(wpa_s, buf + 14))

wpa_supplicant/dbus/dbus_new_handlers_p2p.c

@@ -346,13 +346,13 @@ DBusMessage * wpas_dbus_handler_p2p_group_add(DBusMessage *message,
 		if (ssid == NULL || ssid->disabled != 2)
 			goto inv_args;
 
-		if (wpas_p2p_group_add_persistent(wpa_s, ssid, 0, freq)) {
+		if (wpas_p2p_group_add_persistent(wpa_s, ssid, 0, freq, 0)) {
 			reply = wpas_dbus_error_unknown_error(
 				message,
 				"Failed to reinvoke a persistent group");
 			goto out;
 		}
-	} else if (wpas_p2p_group_add(wpa_s, persistent_group, freq))
+	} else if (wpas_p2p_group_add(wpa_s, persistent_group, freq, 0))
 		goto inv_args;
 
 out:

wpa_supplicant/p2p_supplicant.c

@@ -819,6 +819,7 @@ static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 	ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 		WPAS_MODE_P2P_GO;
 	ssid->frequency = params->freq;
+	ssid->ht40 = params->ht40;
 	ssid->ssid = os_zalloc(params->ssid_len + 1);
 	if (ssid->ssid) {
 		os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
@@ -2042,7 +2043,7 @@ static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
 			   MAC2STR(sa), op_freq);
 		if (s) {
 			wpas_p2p_group_add_persistent(
-				wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0);
+				wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0, 0);
 		} else if (bssid) {
 			wpas_p2p_join(wpa_s, bssid, go_dev_addr,
 				      wpa_s->p2p_wps_method, 0);
@@ -2109,7 +2110,7 @@ static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
 	}
 
 	wpas_p2p_group_add_persistent(wpa_s, ssid,
-				      ssid->mode == WPAS_MODE_P2P_GO, 0);
+				      ssid->mode == WPAS_MODE_P2P_GO, 0, 0);
 }
 
 
@@ -2331,6 +2332,32 @@ static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
 }
 
 
+int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
+			   struct hostapd_hw_modes *mode, u8 channel)
+{
+	int op, ret;
+
+	for (op = 0; op_class[op].op_class; op++) {
+		struct p2p_oper_class_map *o = &op_class[op];
+		u8 ch;
+
+		for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
+			if (o->mode != HOSTAPD_MODE_IEEE80211A ||
+			    o->bw == BW20 || ch != channel)
+				continue;
+			ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
+			if (ret < 0)
+				continue;
+			else if (ret > 0)
+				return (o->bw == BW40MINUS) ? -1 : 1;
+			else
+				return 0;
+		}
+	}
+	return 0;
+}
+
+
 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
 			size_t buf_len)
 {
@@ -3400,13 +3427,14 @@ int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
 
 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
 				   struct p2p_go_neg_results *params,
-				   int freq)
+				   int freq, int ht40)
 {
 	u8 bssid[ETH_ALEN];
 	int res;
 
 	os_memset(params, 0, sizeof(*params));
 	params->role_go = 1;
+	params->ht40 = ht40;
 	if (freq) {
 		wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
 			   "frequency %d MHz", freq);
@@ -3518,7 +3546,7 @@ wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  * i.e., without using Group Owner Negotiation.
  */
 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
-		       int freq)
+		       int freq, int ht40)
 {
 	struct p2p_go_neg_results params;
 	unsigned int r;
@@ -3576,7 +3604,7 @@ int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
 		return -1;
 	}
 
-	if (wpas_p2p_init_go_params(wpa_s, &params, freq))
+	if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
 		return -1;
 	if (params.freq &&
 	    !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
@@ -3643,7 +3671,7 @@ static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
 
 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
 				  struct wpa_ssid *ssid, int addr_allocated,
-				  int freq)
+				  int freq, int ht40)
 {
 	struct p2p_go_neg_results params;
 	int go = 0;
@@ -3669,7 +3697,7 @@ int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
 	if (ssid->mode != WPAS_MODE_P2P_GO)
 		return -1;
 
-	if (wpas_p2p_init_go_params(wpa_s, &params, freq))
+	if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
 		return -1;
 
 	params.role_go = 1;

wpa_supplicant/p2p_supplicant.h

@@ -28,10 +28,10 @@ void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
 					  unsigned int freq);
 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname);
 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
-		       int freq);
+		       int freq, int ht40);
 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
 				  struct wpa_ssid *ssid, int addr_allocated,
-				  int freq);
+				  int freq, int ht40);
 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
 				       struct wpa_ssid *ssid);
 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
@@ -141,5 +141,7 @@ struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
 				       const u8 *addr);
 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s);
+int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
+			   struct hostapd_hw_modes *mode, u8 channel);
 
 #endif /* P2P_SUPPLICANT_H */

wpa_supplicant/wpa_cli.c

@@ -2368,7 +2368,7 @@ static struct wpa_cli_cmd wpa_cli_commands[] = {
 	{ "p2p_group_remove", wpa_cli_cmd_p2p_group_remove, cli_cmd_flag_none,
 	  "<ifname> = remove P2P group interface (terminate group if GO)" },
 	{ "p2p_group_add", wpa_cli_cmd_p2p_group_add, cli_cmd_flag_none,
-	  "= add a new P2P group (local end as GO)" },
+	  "[ht40] = add a new P2P group (local end as GO)" },
 	{ "p2p_prov_disc", wpa_cli_cmd_p2p_prov_disc, cli_cmd_flag_none,
 	  "<addr> <method> = request provisioning discovery" },
 	{ "p2p_get_passphrase", wpa_cli_cmd_p2p_get_passphrase,