ClabureDB: Classified Bug-Reports Database

static struct hlist_node *ct_expect_get_next(struct seq_file *seq,
                                             struct hlist_node *head)
{
        struct net *net = seq_file_net(seq);
        struct ct_expect_iter_state *st = seq->private;

        head = rcu_dereference(head->next);
        while (head == NULL) {
                if (++st->bucket >= nf_ct_expect_hsize)
                        return NULL;
                head = rcu_dereference(net->ct.expect_hash[st->bucket].first);
        }
        return head;
}

static struct hlist_node *ct_expect_get_idx(struct seq_file *seq, loff_t pos)
{
        struct hlist_node *head = ct_expect_get_first(seq);

        if (head)
                while (pos && (head = ct_expect_get_next(seq, head)))
                        pos--;
        return pos ? NULL : head;
}

static void *exp_seq_start(struct seq_file *seq, loff_t *pos)
        __acquires(RCU)
{
        rcu_read_lock();
        return ct_expect_get_idx(seq, *pos);
}

static void *exp_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
        (*pos)++;
        return ct_expect_get_next(seq, v);
}

static void exp_seq_stop(struct seq_file *seq, void *v)
        __releases(RCU)