[Devel] Re: [NETFILTER] early_drop() imrovement (v4)

[Vasily Averin]

Patrick McHardy wrote:
> +	for (i = 0; i < NF_CT_EVICTION_RANGE; i++) {
> +		hlist_for_each_entry(h, n, &nf_conntrack_hash[hash], hnode) {
> +			tmp = nf_ct_tuplehash_to_ctrack(h);
> +			if (!test_bit(IPS_ASSURED_BIT, &tmp->status))
> +				ct = tmp;
> +		}
> +		if (ct) {
> +			atomic_inc(&ct->ct_general.use);
> +			break;
> +		}
> +		hash = (hash + 1) % nf_conntrack_htable_size;

it is incorrect,
We should count the number of checked _conntracks_, but you count the number of
hash buckets. I.e "i" should be incremented/checked inside the nested loop.

Thank you,
	Vasily Averin