P2P: Add group ifname to P2P-PROV-DISC-* events

If Provision Discovery Request is sent for GO role (i.e., P2P Group ID
attribute is included), add the group interface name to the control
interface event on the GO. This makes it easier to figure out which
ctrl_iface needs to be used for wps_pbc/wps_pin command to authorize
the joining P2P client.

Signed-hostap: Jouni Malinen <j@w1.fi>

3 files changed, 25 insertions, 6 deletions

diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index 9823501..c389917 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -2375,7 +2375,8 @@ void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
 				   data->p2p_prov_disc_req.dev_name,
 				   data->p2p_prov_disc_req.supp_config_methods,
 				   data->p2p_prov_disc_req.dev_capab,
-				   data->p2p_prov_disc_req.group_capab);
+				   data->p2p_prov_disc_req.group_capab,
+				   NULL, 0);
 		break;
 	case EVENT_P2P_PROV_DISC_RESPONSE:
 		wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
diff --git a/wpa_supplicant/p2p_supplicant.c b/wpa_supplicant/p2p_supplicant.c
index e76656b..4ce0432 100644
--- a/wpa_supplicant/p2p_supplicant.c
+++ b/wpa_supplicant/p2p_supplicant.c
@@ -1688,13 +1688,28 @@ static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
 			const u8 *dev_addr, const u8 *pri_dev_type,
 			const char *dev_name, u16 supp_config_methods,
-			u8 dev_capab, u8 group_capab)
+			u8 dev_capab, u8 group_capab, const u8 *group_id,
+			size_t group_id_len)
 {
 	struct wpa_supplicant *wpa_s = ctx;
 	char devtype[WPS_DEV_TYPE_BUFSIZE];
-	char params[200];
+	char params[300];
 	u8 empty_dev_type[8];
 	unsigned int generated_pin = 0;
+	struct wpa_supplicant *group = NULL;
+
+	if (group_id) {
+		for (group = wpa_s->global->ifaces; group; group = group->next)
+		{
+			struct wpa_ssid *s = group->current_ssid;
+			if (s != NULL &&
+			    s->mode == WPAS_MODE_P2P_GO &&
+			    group_id_len - ETH_ALEN == s->ssid_len &&
+			    os_memcmp(group_id + ETH_ALEN, s->ssid,
+				      s->ssid_len) == 0)
+				break;
+		}
+	}
 
 	if (pri_dev_type == NULL) {
 		os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
@@ -1702,11 +1717,13 @@ void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
 	}
 	os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
 		    " pri_dev_type=%s name='%s' config_methods=0x%x "
-		    "dev_capab=0x%x group_capab=0x%x",
+		    "dev_capab=0x%x group_capab=0x%x%s%s",
 		    MAC2STR(dev_addr),
 		    wps_dev_type_bin2str(pri_dev_type, devtype,
 					 sizeof(devtype)),
-		    dev_name, supp_config_methods, dev_capab, group_capab);
+		    dev_name, supp_config_methods, dev_capab, group_capab,
+		    group ? " group=" : "",
+		    group ? group->ifname : "");
 	params[sizeof(params) - 1] = '\0';
 
 	if (config_methods & WPS_CONFIG_DISPLAY) {
diff --git a/wpa_supplicant/p2p_supplicant.h b/wpa_supplicant/p2p_supplicant.h
index 33b22db..6afc4bb 100644
--- a/wpa_supplicant/p2p_supplicant.h
+++ b/wpa_supplicant/p2p_supplicant.h
@@ -73,7 +73,8 @@ void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id);
 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
 			const u8 *dev_addr, const u8 *pri_dev_type,
 			const char *dev_name, u16 supp_config_methods,
-			u8 dev_capab, u8 group_capab);
+			u8 dev_capab, u8 group_capab, const u8 *group_id,
+			size_t group_id_len);
 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods);
 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
 		     u16 update_indic, const u8 *tlvs, size_t tlvs_len);