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>

1 files changed, 11 insertions, 0 deletions

diff --git a/wpa_supplicant/bss.h b/wpa_supplicant/bss.h
index 4a782af..f7f72f3 100644
--- a/wpa_supplicant/bss.h
+++ b/wpa_supplicant/bss.h
@@ -148,6 +148,17 @@ static inline int bss_is_dmg(const struct wpa_bss *bss)
 	return bss->freq > 45000;
 }
 
+/**
+ * Test whether a BSS is a PBSS.
+ * This checks whether a BSS is a DMG-band PBSS. PBSS is used for P2P DMG
+ * network.
+ */
+static inline int bss_is_pbss(struct wpa_bss *bss)
+{
+	return bss_is_dmg(bss) &&
+		(bss->caps & IEEE80211_CAP_DMG_MASK) == IEEE80211_CAP_DMG_PBSS;
+}
+
 static inline void wpa_bss_update_level(struct wpa_bss *bss, int new_level)
 {
 	if (bss != NULL && new_level < 0)