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meter: fix divide by zero for RFC4115

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RFC 4115 allows a meter with either cir and/or eir configured.
When only one is configured a divide by zero would occur.

Fixes: 655796d2b5 ("meter: support RFC4115 trTCM")

Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
This commit is contained in:
Eelco Chaudron 2019-03-19 12:10:44 +00:00 committed by Cristian Dumitrescu
parent 82010ef55e
commit ebe3a76991
1 changed files with 9 additions and 1 deletions
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10
lib/librte_meter/rte_meter.c
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@ -19,7 +19,15 @@
static void
rte_meter_get_tb_params(uint64_t hz, uint64_t rate, uint64_t *tb_period, uint64_t *tb_bytes_per_period)
{
double period = ((double) hz) / ((double) rate);
double period;
if (rate == 0) {
*tb_bytes_per_period = 0;
*tb_period = RTE_METER_TB_PERIOD_MIN;
return;
}
period = ((double) hz) / ((double) rate);
if (period >= RTE_METER_TB_PERIOD_MIN) {
*tb_bytes_per_period = 1;