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: 9a4d7e86acf3 ("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>

diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
index 12251a1032d19b58368fa8ee8c722091b288d6e4..7567cc464b88b6b04ba15c6ceb7f4e6ace759af8 100644 (file)
--- a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
@@ -175,16 +175,23 @@ 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;
 
-               for (j = 0; j < QEDE_NUM_RQSTATS; j++)
-                       sprintf(buf + (k + j) * ETH_GSTRING_LEN,
-                               "%d:   %s", i, qede_rqstats_arr[j].string);
-               k += QEDE_NUM_RQSTATS;
-               for (tc = 0; tc < edev->num_tc; tc++) {
-                       for (j = 0; j < QEDE_NUM_TQSTATS; j++)
+               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.%d: %s", i, tc,
-                                       qede_tqstats_arr[j].string);
-                       k += QEDE_NUM_TQSTATS;
+                                       "%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,
+                                               "%d.%d: %s", i, tc,
+                                               qede_tqstats_arr[j].string);
+                               k += QEDE_NUM_TQSTATS;
+                       }
                }
        }