static const struct nft_expr_ops *
nft_queue_select_ops(const struct nft_ctx *ctx,
const struct nlattr * const tb[])
{
if (tb[NFTA_QUEUE_NUM] && tb[NFTA_QUEUE_SREG_QNUM])
return ERR_PTR(-EINVAL);
init_hashrandom(&jhash_initval);
if (tb[NFTA_QUEUE_NUM])
return &nft_queue_ops;
if (tb[NFTA_QUEUE_SREG_QNUM])
return &nft_queue_sreg_ops;
return ERR_PTR(-EINVAL);
}
static int nft_queue_init(const struct nft_ctx *ctx,
const struct nft_expr *expr,
const struct nlattr * const tb[])
{
struct nft_queue *priv = nft_expr_priv(expr);
if (tb[NFTA_QUEUE_NUM] == NULL)
return -EINVAL;
init_hashrandom(&jhash_initval);
priv->queuenum = ntohs(nla_get_be16(tb[NFTA_QUEUE_NUM]));
if (tb[NFTA_QUEUE_TOTAL] != NULL)
priv->queues_total = ntohs(nla_get_be16(tb[NFTA_QUEUE_TOTAL]));
if (tb[NFTA_QUEUE_FLAGS] != NULL) {
priv->flags = ntohs(nla_get_be16(tb[NFTA_QUEUE_FLAGS]));
if (priv->flags & ~NFT_QUEUE_FLAG_MASK)
return -EINVAL;
}
return 0;
}
static int nfqueue_tg_check(const struct xt_tgchk_param *par)
{
const struct xt_NFQ_info_v3 *info = par->targinfo;
u32 maxid;
init_hashrandom(&jhash_initval);
if (info->queues_total == 0) {
pr_err("NFQUEUE: number of total queues is 0\n");
return -EINVAL;
}
maxid = info->queues_total - 1 + info->queuenum;
if (maxid > 0xffff) {
pr_err("NFQUEUE: number of queues (%u) out of range (got %u)\n",
info->queues_total, maxid);
return -ERANGE;
}
if (par->target->revision == 2 && info->flags > 1)
return -EINVAL;
if (par->target->revision == 3 && info->flags & ~NFQ_FLAG_MASK)
return -EINVAL;
return 0;
}
