ClabureDB: Classified Bug-Reports Database

                cache->mfc_flags |= MFC_NOTIFY;
        err = ipmr_fill_mroute(skb, cache, rtm);
        read_unlock(&mrt_lock);
        return err;
}

#ifdef CONFIG_PROC_FS
/*
 *        The /proc interfaces to multicast routing /proc/ip_mr_cache /proc/ip_mr_vif
 */
struct ipmr_vif_iter {
        int ct;
};

static struct vif_device *ipmr_vif_seq_idx(struct ipmr_vif_iter *iter,
                                           loff_t pos)
{
        for (iter->ct = 0; iter->ct < maxvif; ++iter->ct) {
                if (!VIF_EXISTS(iter->ct))
                        continue;
                if (pos-- == 0)
                        return &vif_table[iter->ct];
        }
        return NULL;
}

static void *ipmr_vif_seq_start(struct seq_file *seq, loff_t *pos)
        __acquires(mrt_lock)
{
        read_lock(&mrt_lock);
        return *pos ? ipmr_vif_seq_idx(seq->private, *pos - 1)
                : SEQ_START_TOKEN;
}

static void *ipmr_vif_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
        struct ipmr_vif_iter *iter = seq->private;

        ++*pos;
        if (v == SEQ_START_TOKEN)
                return ipmr_vif_seq_idx(iter, 0);