wpa_supplicant: Basic support for PBSS/PCP

PBSS (Personal Basic Service Set) is a new BSS type for DMG
networks. It is similar to infrastructure BSS, having an AP-like
entity called PCP (PBSS Control Point), but it has few differences.
PBSS support is mandatory for IEEE 802.11ad devices.

Add a new "pbss" argument to network block. The argument is used
in the following scenarios:
1. When network has mode=2 (AP), when pbss flag is set will start
as a PCP instead of an AP.
2. When network has mode=0 (station), when pbss flag is set will
connect to PCP instead of AP.

The function wpa_scan_res_match() was modified to match BSS according to
the pbss flag in the network block (wpa_ssid structure). When pbss flag
is set it will match only PCPs, and when it is clear it will match only
APs.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>

src/ap/ap_config.h

@@ -570,6 +570,8 @@ struct hostapd_bss_config {
 
 	char *no_probe_resp_if_seen_on;
 	char *no_auth_if_seen_on;
+
+	int pbss;
 };
 
 

src/ap/beacon.c

@@ -1217,6 +1217,7 @@ int ieee802_11_build_ap_params(struct hostapd_data *hapd,
 		params->osen = 1;
 	}
 #endif /* CONFIG_HS20 */
+	params->pbss = hapd->conf->pbss;
 	return 0;
 }