From: Liping Zhang <zlpnobody@xxxxxxxxx>
Similar to nf_conntrack_helper, we can use nf_ct_iterare_cleanup to
remove these copy & paste codes.
Signed-off-by: Liping Zhang <zlpnobody@xxxxxxxxx>
---
net/netfilter/nfnetlink_cttimeout.c | 39 +++++--------------------------------
1 file changed, 5 insertions(+), 34 deletions(-)
diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c
index a3e7bb5..af59461 100644
--- a/net/netfilter/nfnetlink_cttimeout.c
+++ b/net/netfilter/nfnetlink_cttimeout.c
@@ -287,49 +287,20 @@ static int cttimeout_get_timeout(struct net *net, struct sock *ctnl,
return ret;
}
-static void untimeout(struct nf_conntrack_tuple_hash *i,
- struct ctnl_timeout *timeout)
+static int untimeout(struct nf_conn *ct, void *timeout)
{
- struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(i);
struct nf_conn_timeout *timeout_ext = nf_ct_timeout_find(ct);
if (timeout_ext && (!timeout || timeout_ext->timeout == timeout))
RCU_INIT_POINTER(timeout_ext->timeout, NULL);
+
+ /* We are not intended to delete this conntrack. */
+ return 0;
}
static void ctnl_untimeout(struct net *net, struct ctnl_timeout *timeout)
{
- struct nf_conntrack_tuple_hash *h;
- const struct hlist_nulls_node *nn;
- unsigned int last_hsize;
- spinlock_t *lock;
- int i, cpu;
-
- for_each_possible_cpu(cpu) {
- struct ct_pcpu *pcpu = per_cpu_ptr(net->ct.pcpu_lists, cpu);
-
- spin_lock_bh(&pcpu->lock);
- hlist_nulls_for_each_entry(h, nn, &pcpu->unconfirmed, hnnode)
- untimeout(h, timeout);
- spin_unlock_bh(&pcpu->lock);
- }
-
- local_bh_disable();
-restart:
- last_hsize = nf_conntrack_htable_size;
- for (i = 0; i < last_hsize; i++) {
- lock = &nf_conntrack_locks[i % CONNTRACK_LOCKS];
- nf_conntrack_lock(lock);
- if (last_hsize != nf_conntrack_htable_size) {
- spin_unlock(lock);
- goto restart;
- }
-
- hlist_nulls_for_each_entry(h, nn, &nf_conntrack_hash[i], hnnode)
- untimeout(h, timeout);
- spin_unlock(lock);
- }
- local_bh_enable();
+ nf_ct_iterate_cleanup(net, untimeout, timeout, 0, 0);
}
/* try to delete object, fail if it is still in use. */
--
2.5.5
--
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