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netfilter: xt_rateest: fix u64 truncation in xt_rateest_mt()

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On links faster than ~34 Gbps, where byte rate may exceed 2^32-1
(~ 4.3 GBps), the comparison result becomes incorrect because the
truncated value no longer reflects the actual estimator rate.

Fix by changing the local variables to u64.

Fixes: 1c0d32fde5 ("net_sched: gen_estimator: complete rewrite of rate estimators")
Signed-off-by: Feng Wu <wufengwufengwufeng@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
This commit is contained in:
Feng Wu 2026-06-25 08:44:25 +00:00 committed by Florian Westphal
parent 64cdf7d30a
commit 444853cd43
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/xt_rateest.c
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@ -16,7 +16,7 @@ xt_rateest_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct xt_rateest_match_info *info = par->matchinfo;
struct gnet_stats_rate_est64 sample = {0};
u_int32_t bps1, bps2, pps1, pps2;
u64 bps1, bps2, pps1, pps2;
bool ret = true;
gen_estimator_read(&info->est1->rate_est, &sample);