wlantest: Add ping_ok_first_assoc STA counter

This can be used to verify whether ping goes through between
clearing of the STA counters and the first (re)association.

wlantest/rx_ip.c

@@ -82,6 +82,10 @@ static void rx_data_icmp(struct wlantest *wt, const u8 *bssid,
 	    sta->icmp_echo_req_id == id &&
 	    sta->icmp_echo_req_seq == seq) {
 		sta->counters[WLANTEST_STA_COUNTER_PING_OK]++;
+		if (sta->counters[WLANTEST_STA_COUNTER_ASSOCREQ_TX] == 0 &&
+		    sta->counters[WLANTEST_STA_COUNTER_REASSOCREQ_TX] == 0)
+			sta->counters[
+				WLANTEST_STA_COUNTER_PING_OK_FIRST_ASSOC]++;
 		wpa_printf(MSG_DEBUG, "ICMP echo (ping) match for STA " MACSTR,
 			   MAC2STR(sta->addr));
 	}

wlantest/wlantest_cli.c

@@ -539,6 +539,7 @@ static const struct sta_counters sta_counters[] = {
 	{ "ping_ok", WLANTEST_STA_COUNTER_PING_OK },
 	{ "assocresp_comeback", WLANTEST_STA_COUNTER_ASSOCRESP_COMEBACK },
 	{ "reassocresp_comeback", WLANTEST_STA_COUNTER_REASSOCRESP_COMEBACK },
+	{ "ping_ok_first_assoc", WLANTEST_STA_COUNTER_PING_OK_FIRST_ASSOC },
 	{ NULL, 0 }
 };
 

wlantest/wlantest_ctrl.h

@@ -96,6 +96,7 @@ enum wlantest_sta_counter {
 	WLANTEST_STA_COUNTER_PING_OK,
 	WLANTEST_STA_COUNTER_ASSOCRESP_COMEBACK,
 	WLANTEST_STA_COUNTER_REASSOCRESP_COMEBACK,
+	WLANTEST_STA_COUNTER_PING_OK_FIRST_ASSOC,
 	NUM_WLANTEST_STA_COUNTER
 };