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dhcpv6_client: keep integers in retransmission calculations signed

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Martine Lenders 2021-10-15 17:35:46 +02:00
parent 32be74291c
commit d844de2263
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GPG Key ID: 2134D77A5336DD80
1 changed files with 4 additions and 2 deletions
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6
sys/net/application_layer/dhcpv6/client.c
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@ -523,12 +523,14 @@ static inline uint32_t _irt_ms(uint16_t irt, bool greater_irt)
static inline uint32_t _sub_rt_ms(uint32_t rt_prev_ms, uint16_t mrt)
{
uint32_t sub_rt_ms = (2 * rt_prev_ms) +
((get_rand_ms_factor() * rt_prev_ms) / MS_PER_SEC);
((int32_t)(get_rand_ms_factor() * rt_prev_ms) /
(int32_t)MS_PER_SEC);
if (sub_rt_ms > (mrt * MS_PER_SEC)) {
uint32_t mrt_ms = mrt * MS_PER_SEC;
sub_rt_ms = mrt_ms + ((get_rand_ms_factor() * mrt_ms) / MS_PER_SEC);
sub_rt_ms = mrt_ms + ((int32_t)(get_rand_ms_factor() * mrt_ms) /
(int32_t)MS_PER_SEC);
}
return sub_rt_ms;
}