pktgen: fix multiple queue warning

when testing the new pktgen module with multiple queues and ixgbe with:
	pgset "flag QUEUE_MAP_CPU"

I found that I was getting errors in dmesg like:
pktgen: WARNING: QUEUE_MAP_CPU disabled because CPU count (8) exceeds number
<4>pktgen: WARNING: of tx queues (8) on eth15

you'll note, 8 really doesn't exceed 8.

This patch seemed to fix the logic errors and also the attempts at
limiting line length in printk (which didn't work anyway)

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Robert Olsson <robert.olsson@its.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 14 deletions

diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 99f656d35b4f..a47f5bad110d 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -1973,28 +1973,27 @@ static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
 
         /* make sure that we don't pick a non-existing transmit queue */
         ntxq = pkt_dev->odev->real_num_tx_queues;
-        if (ntxq <= num_online_cpus() && (pkt_dev->flags & F_QUEUE_MAP_CPU)) {
+        if (ntxq > num_online_cpus() && (pkt_dev->flags & F_QUEUE_MAP_CPU)) {
                 printk(KERN_WARNING "pktgen: WARNING: QUEUE_MAP_CPU "
-                       "disabled because CPU count (%d) exceeds number ",
-                       num_online_cpus());
-                printk(KERN_WARNING "pktgen: WARNING: of tx queues "
-                       "(%d) on %s \n", ntxq, pkt_dev->odev->name);
+                       "disabled because CPU count (%d) exceeds number "
+                       "of tx queues (%d) on %s\n", num_online_cpus(), ntxq,
+                       pkt_dev->odev->name);
                 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
         }
         if (ntxq <= pkt_dev->queue_map_min) {
                 printk(KERN_WARNING "pktgen: WARNING: Requested "
-                       "queue_map_min (%d) exceeds number of tx\n",
-                       pkt_dev->queue_map_min);
-                printk(KERN_WARNING "pktgen: WARNING: queues (%d) on "
-                       "%s, resetting\n", ntxq, pkt_dev->odev->name);
+                       "queue_map_min (zero-based) (%d) exceeds valid range "
+                       "[0 - %d] for (%d) queues on %s, resetting\n",
+                       pkt_dev->queue_map_min, (ntxq ?: 1)- 1, ntxq,
+                       pkt_dev->odev->name);
                 pkt_dev->queue_map_min = ntxq - 1;
         }
-        if (ntxq <= pkt_dev->queue_map_max) {
+        if (pkt_dev->queue_map_max >= ntxq) {
                 printk(KERN_WARNING "pktgen: WARNING: Requested "
-                       "queue_map_max (%d) exceeds number of tx\n",
-                       pkt_dev->queue_map_max);
-                printk(KERN_WARNING "pktgen: WARNING: queues (%d) on "
-                       "%s, resetting\n", ntxq, pkt_dev->odev->name);
+                       "queue_map_max (zero-based) (%d) exceeds valid range "
+                       "[0 - %d] for (%d) queues on %s, resetting\n",
+                       pkt_dev->queue_map_max, (ntxq ?: 1)- 1, ntxq,
+                       pkt_dev->odev->name);
                 pkt_dev->queue_map_max = ntxq - 1;
         }