netfilter: conntrack: fix nf_conntrack_expect_max default value in documentation

The documentation for nf_conntrack_expect_max incorrectly states that the
default value is nf_conntrack_buckets / 256. However, the code in
nf_conntrack_expect_init() shows:

    nf_ct_expect_hsize = nf_conntrack_htable_size / 256;
    nf_ct_expect_max = nf_ct_expect_hsize * 4;

This means the default value is actually nf_conntrack_buckets / 64
(i.e. 4 times the hash table size, which defaults to
nf_conntrack_buckets / 256).

Fix the documentation to reflect the correct default value and add
explanation of the calculation.

Signed-off-by: Shaojie Sun <sunshaojie@kylinos.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

0 files changed, 0 insertions, 0 deletions