qede: Fix statistics' strings for Tx/Rx queues

When an interface is configured to use Tx/Rx-only queues,
the length of the statistics would be shortened to accomodate only the
statistics required per-each queue, and the values would be provided
accordingly.
However, the strings provided would still contain both Tx and Rx strings
for each one of the queues [regardless of its configuration], which might
lead to out-of-bound access when filling the buffers as well as incorrect
statistics presented.

Fixes: 9a4d7e86 ("qede: Add support for Tx/Rx-only queues.")
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qede/qede_ethtool.c

@@ -175,18 +175,25 @@ static void qede_get_strings_stats(struct qede_dev *edev, u8 *buf)
 	for (i = 0, k = 0; i < QEDE_QUEUE_CNT(edev); i++) {
 		int tc;
 
+		if (edev->fp_array[i].type & QEDE_FASTPATH_RX) {
 			for (j = 0; j < QEDE_NUM_RQSTATS; j++)
 				sprintf(buf + (k + j) * ETH_GSTRING_LEN,
-				"%d:   %s", i, qede_rqstats_arr[j].string);
+					"%d:   %s", i,
+					qede_rqstats_arr[j].string);
 			k += QEDE_NUM_RQSTATS;
+		}
+
+		if (edev->fp_array[i].type & QEDE_FASTPATH_TX) {
 			for (tc = 0; tc < edev->num_tc; tc++) {
 				for (j = 0; j < QEDE_NUM_TQSTATS; j++)
-				sprintf(buf + (k + j) * ETH_GSTRING_LEN,
+					sprintf(buf + (k + j) *
+						ETH_GSTRING_LEN,
 						"%d.%d: %s", i, tc,
 						qede_tqstats_arr[j].string);
 				k += QEDE_NUM_TQSTATS;
 			}
 		}
+	}
 
 	for (i = 0, j = 0; i < QEDE_NUM_STATS; i++) {
 		if (IS_VF(edev) && qede_stats_arr[i].pf_only)