From f264a7df08d50bb4a23be6a9aa06940e497ac1c4 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Sat, 7 Jul 2007 22:36:24 -0700 Subject: [NETFILTER]: nf_conntrack_expect: introduce nf_conntrack_expect_max sysct As a last step of preventing DoS by creating lots of expectations, this patch introduces a global maximum and a sysctl to control it. The default is initialized to 4 * the expectation hash table size, which results in 1/64 of the default maxmimum of conntracks. Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- include/net/netfilter/nf_conntrack_expect.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/net') diff --git a/include/net/netfilter/nf_conntrack_expect.h b/include/net/netfilter/nf_conntrack_expect.h index 9d5af4e22c4..cae1a0dce36 100644 --- a/include/net/netfilter/nf_conntrack_expect.h +++ b/include/net/netfilter/nf_conntrack_expect.h @@ -8,6 +8,7 @@ extern struct hlist_head *nf_ct_expect_hash; extern unsigned int nf_ct_expect_hsize; +extern unsigned int nf_ct_expect_max; struct nf_conntrack_expect { -- cgit v1.2.3