wpa_supplicant: Use monotonic time for EAPOL RX workaround

The EAPOL RX workaround checks that the events are less than 100 ms
apart, so only uses relative times and should use monotonic time.

Signed-hostap: Johannes Berg <johannes.berg@intel.com>

wpa_supplicant/events.c

@@ -1951,9 +1951,9 @@ static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
 	wpa_s->last_eapol_matches_bssid = 0;
 
 	if (wpa_s->pending_eapol_rx) {
-		struct os_time now, age;
-		os_get_time(&now);
-		os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
+		struct os_reltime now, age;
+		os_get_reltime(&now);
+		os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
 		if (age.sec == 0 && age.usec < 100000 &&
 		    os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
 		    0) {

wpa_supplicant/wpa_supplicant.c

@@ -2349,7 +2349,7 @@ void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
 		wpabuf_free(wpa_s->pending_eapol_rx);
 		wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
 		if (wpa_s->pending_eapol_rx) {
-			os_get_time(&wpa_s->pending_eapol_rx_time);
+			os_get_reltime(&wpa_s->pending_eapol_rx_time);
 			os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
 				  ETH_ALEN);
 		}

wpa_supplicant/wpa_supplicant_i.h

@@ -517,7 +517,7 @@ struct wpa_supplicant {
 	int blacklist_cleared;
 
 	struct wpabuf *pending_eapol_rx;
-	struct os_time pending_eapol_rx_time;
+	struct os_reltime pending_eapol_rx_time;
 	u8 pending_eapol_rx_src[ETH_ALEN];
 	unsigned int last_eapol_matches_bssid:1;