static int nf_ct_expect_vmalloc;
static struct kmem_cache *nf_ct_expect_cachep __read_mostly;
-static unsigned int nf_ct_expect_next_id;
/* nf_conntrack_expect helper functions */
void nf_ct_unlink_expect(struct nf_conntrack_expect *exp)
static unsigned int nf_ct_expect_dst_hash(const struct nf_conntrack_tuple *tuple)
{
+ unsigned int hash;
+
if (unlikely(!nf_ct_expect_hash_rnd_initted)) {
get_random_bytes(&nf_ct_expect_hash_rnd, 4);
nf_ct_expect_hash_rnd_initted = 1;
}
- return jhash2(tuple->dst.u3.all, ARRAY_SIZE(tuple->dst.u3.all),
+ hash = jhash2(tuple->dst.u3.all, ARRAY_SIZE(tuple->dst.u3.all),
(((tuple->dst.protonum ^ tuple->src.l3num) << 16) |
- (__force __u16)tuple->dst.u.all) ^ nf_ct_expect_hash_rnd) %
- nf_ct_expect_hsize;
+ (__force __u16)tuple->dst.u.all) ^ nf_ct_expect_hash_rnd);
+ return ((u64)hash * nf_ct_expect_hsize) >> 32;
}
struct nf_conntrack_expect *
EXPORT_SYMBOL_GPL(nf_ct_expect_alloc);
void nf_ct_expect_init(struct nf_conntrack_expect *exp, int family,
- union nf_conntrack_address *saddr,
- union nf_conntrack_address *daddr,
+ union nf_inet_addr *saddr,
+ union nf_inet_addr *daddr,
u_int8_t proto, __be16 *src, __be16 *dst)
{
int len;
exp->timeout.expires = jiffies + master_help->helper->timeout * HZ;
add_timer(&exp->timeout);
- exp->id = ++nf_ct_expect_next_id;
atomic_inc(&exp->use);
NF_CT_STAT_INC(expect_create);
}
}
static void *exp_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(nf_conntrack_lock)
{
read_lock_bh(&nf_conntrack_lock);
return ct_expect_get_idx(seq, *pos);
}
static void exp_seq_stop(struct seq_file *seq, void *v)
+ __releases(nf_conntrack_lock)
{
read_unlock_bh(&nf_conntrack_lock);
}
static int exp_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- struct ct_expect_iter_state *st;
- int ret;
-
- st = kzalloc(sizeof(struct ct_expect_iter_state), GFP_KERNEL);
- if (!st)
- return -ENOMEM;
- ret = seq_open(file, &exp_seq_ops);
- if (ret)
- goto out_free;
- seq = file->private_data;
- seq->private = st;
- return ret;
-out_free:
- kfree(st);
- return ret;
+ return seq_open_private(file, &exp_seq_ops,
+ sizeof(struct ct_expect_iter_state));
}
static const struct file_operations exp_file_ops = {