nl80211: Remove cfg80211 state mismatch workaround for authentication

cfg80211 dropped support for tracking BSS authentication state and
setting NL80211_BSS_STATUS_AUTHENTICATED in 'cfg80211: stop tracking
authenticated state' three years ago (starting in Linux 3.4). As such,
this workaround code in wpa_supplicant cannot be reached anymore. There
is no real need for maintaining it for older kernels either, since there
are other ways of detecting and working around state mismatches with the
actual authentication operations failing.

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

src/drivers/driver.h

@@ -198,7 +198,6 @@ struct hostapd_hw_modes {
 #define WPA_SCAN_NOISE_INVALID		BIT(1)
 #define WPA_SCAN_LEVEL_INVALID		BIT(2)
 #define WPA_SCAN_LEVEL_DBM		BIT(3)
-#define WPA_SCAN_AUTHENTICATED		BIT(4)
 #define WPA_SCAN_ASSOCIATED		BIT(5)
 
 /**

src/drivers/driver_nl80211_scan.c

@@ -599,9 +599,6 @@ int bss_info_handler(struct nl_msg *msg, void *arg)
 		enum nl80211_bss_status status;
 		status = nla_get_u32(bss[NL80211_BSS_STATUS]);
 		switch (status) {
-		case NL80211_BSS_STATUS_AUTHENTICATED:
-			r->flags |= WPA_SCAN_AUTHENTICATED;
-			break;
 		case NL80211_BSS_STATUS_ASSOCIATED:
 			r->flags |= WPA_SCAN_ASSOCIATED;
 			break;
@@ -677,23 +674,6 @@ static void wpa_driver_nl80211_check_bss_status(
 
 	for (i = 0; i < res->num; i++) {
 		struct wpa_scan_res *r = res->res[i];
-		if (r->flags & WPA_SCAN_AUTHENTICATED) {
-			wpa_printf(MSG_DEBUG, "nl80211: Scan results "
-				   "indicates BSS status with " MACSTR
-				   " as authenticated",
-				   MAC2STR(r->bssid));
-			if (is_sta_interface(drv->nlmode) &&
-			    os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
-			    os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
-			    0) {
-				wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
-					   " in local state (auth=" MACSTR
-					   " assoc=" MACSTR ")",
-					   MAC2STR(drv->auth_bssid),
-					   MAC2STR(drv->bssid));
-				clear_state_mismatch(drv, r->bssid);
-			}
-		}
 
 		if (r->flags & WPA_SCAN_ASSOCIATED) {
 			wpa_printf(MSG_DEBUG, "nl80211: Scan results "
@@ -786,9 +766,8 @@ void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
 	wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
 	for (i = 0; i < res->num; i++) {
 		struct wpa_scan_res *r = res->res[i];
-		wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
+		wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s",
 			   (int) i, (int) res->num, MAC2STR(r->bssid),
-			   r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
 			   r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
 	}