diff options
Diffstat (limited to 'net/ipv4/icmp.c')
| -rw-r--r-- | net/ipv4/icmp.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c index e57f1673bf6b..37cdea0c26b4 100644 --- a/net/ipv4/icmp.c +++ b/net/ipv4/icmp.c @@ -275,18 +275,19 @@ static inline void icmp_xmit_unlock(void) #define XRLIM_BURST_FACTOR 6 int xrlim_allow(struct dst_entry *dst, int timeout) { - unsigned long now; + unsigned long now, token = dst->rate_tokens; int rc = 0; now = jiffies; - dst->rate_tokens += now - dst->rate_last; + token += now - dst->rate_last; dst->rate_last = now; - if (dst->rate_tokens > XRLIM_BURST_FACTOR * timeout) - dst->rate_tokens = XRLIM_BURST_FACTOR * timeout; - if (dst->rate_tokens >= timeout) { - dst->rate_tokens -= timeout; + if (token > XRLIM_BURST_FACTOR * timeout) + token = XRLIM_BURST_FACTOR * timeout; + if (token >= timeout) { + token -= timeout; rc = 1; } + dst->rate_tokens = token; return rc; } |