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Diffstat (limited to 'net/netfilter/nf_conntrack_core.c')
-rw-r--r--net/netfilter/nf_conntrack_core.c22
1 files changed, 15 insertions, 7 deletions
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index f284dddfc899..ce4c4ba31cb1 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -246,16 +246,14 @@ static void death_by_timeout(unsigned long ul_conntrack)
}
struct nf_conntrack_tuple_hash *
-__nf_conntrack_find(const struct nf_conntrack_tuple *tuple,
- const struct nf_conn *ignored_conntrack)
+__nf_conntrack_find(const struct nf_conntrack_tuple *tuple)
{
struct nf_conntrack_tuple_hash *h;
struct hlist_node *n;
unsigned int hash = hash_conntrack(tuple);
hlist_for_each_entry_rcu(h, n, &nf_conntrack_hash[hash], hnode) {
- if (nf_ct_tuplehash_to_ctrack(h) != ignored_conntrack &&
- nf_ct_tuple_equal(tuple, &h->tuple)) {
+ if (nf_ct_tuple_equal(tuple, &h->tuple)) {
NF_CT_STAT_INC(found);
return h;
}
@@ -274,7 +272,7 @@ nf_conntrack_find_get(const struct nf_conntrack_tuple *tuple)
struct nf_conn *ct;
rcu_read_lock();
- h = __nf_conntrack_find(tuple, NULL);
+ h = __nf_conntrack_find(tuple);
if (h) {
ct = nf_ct_tuplehash_to_ctrack(h);
if (unlikely(!atomic_inc_not_zero(&ct->ct_general.use)))
@@ -395,12 +393,22 @@ nf_conntrack_tuple_taken(const struct nf_conntrack_tuple *tuple,
const struct nf_conn *ignored_conntrack)
{
struct nf_conntrack_tuple_hash *h;
+ struct hlist_node *n;
+ unsigned int hash = hash_conntrack(tuple);
rcu_read_lock();
- h = __nf_conntrack_find(tuple, ignored_conntrack);
+ hlist_for_each_entry_rcu(h, n, &nf_conntrack_hash[hash], hnode) {
+ if (nf_ct_tuplehash_to_ctrack(h) != ignored_conntrack &&
+ nf_ct_tuple_equal(tuple, &h->tuple)) {
+ NF_CT_STAT_INC(found);
+ rcu_read_unlock();
+ return 1;
+ }
+ NF_CT_STAT_INC(searched);
+ }
rcu_read_unlock();
- return h != NULL;
+ return 0;
}
EXPORT_SYMBOL_GPL(nf_conntrack_tuple_taken);