netdev-dpdk: use 64-bit arithmetic when converting rates.

Force 64-bit arithmetic to be used when converting uint32_t rate
and burst parameters from kilobits per second to bytes per second,
avoiding incorrect behavior for rates exceeding UINT_MAX bits
per second.

Reported-by: "王志克" <wangzhike@jd.com>
Fixes: 9509913 ("netdev-dpdk.c: Add ingress-policing functionality.")
Signed-off-by: Lance Richardson <lrichard@redhat.com>
Acked-By: Mark Michelson <mmichels@redhat.com>
Acked-by: Kevin Traynor <ktraynor@redhat.com>
Signed-off-by: Darrell Ball <dlu998@gmail.com>

lib/netdev-dpdk.c

@@ -2148,8 +2148,8 @@ netdev_dpdk_policer_construct(uint32_t rate, uint32_t burst)
     rte_spinlock_init(&policer->policer_lock);
 
     /* rte_meter requires bytes so convert kbits rate and burst to bytes. */
-    rate_bytes = rate * 1000/8;
-    burst_bytes = burst * 1000/8;
+    rate_bytes = rate * 1000ULL / 8;
+    burst_bytes = burst * 1000ULL / 8;
 
     policer->app_srtcm_params.cir = rate_bytes;
     policer->app_srtcm_params.cbs = burst_bytes;