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

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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: 9509913aa7 ("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>
This commit is contained in:
Lance Richardson
2017-08-25 14:35:31 -07:00
committed by Darrell Ball
parent d8c5a93bd1
commit 602c86681c
1 changed files with 2 additions and 2 deletions
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4
lib/netdev-dpdk.c
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@@ -2231,8 +2231,8 @@ 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;