};
static void nft_exthdr_eval(const struct nft_expr *expr,
- struct nft_data data[NFT_REG_MAX + 1],
+ struct nft_regs *regs,
const struct nft_pktinfo *pkt)
{
struct nft_exthdr *priv = nft_expr_priv(expr);
- struct nft_data *dest = &data[priv->dreg];
+ u32 *dest = ®s->data[priv->dreg];
unsigned int offset = 0;
int err;
goto err;
offset += priv->offset;
- if (skb_copy_bits(pkt->skb, offset, dest->data, priv->len) < 0)
+ dest[priv->len / NFT_REG32_SIZE] = 0;
+ if (skb_copy_bits(pkt->skb, offset, dest, priv->len) < 0)
goto err;
return;
err:
- data[NFT_REG_VERDICT].verdict = NFT_BREAK;
+ regs->verdict.code = NFT_BREAK;
}
static const struct nla_policy nft_exthdr_policy[NFTA_EXTHDR_MAX + 1] = {
const struct nlattr * const tb[])
{
struct nft_exthdr *priv = nft_expr_priv(expr);
- int err;
if (tb[NFTA_EXTHDR_DREG] == NULL ||
tb[NFTA_EXTHDR_TYPE] == NULL ||
priv->type = nla_get_u8(tb[NFTA_EXTHDR_TYPE]);
priv->offset = ntohl(nla_get_be32(tb[NFTA_EXTHDR_OFFSET]));
priv->len = ntohl(nla_get_be32(tb[NFTA_EXTHDR_LEN]));
- if (priv->len == 0 ||
- priv->len > FIELD_SIZEOF(struct nft_data, data))
- return -EINVAL;
+ priv->dreg = nft_parse_register(tb[NFTA_EXTHDR_DREG]);
- priv->dreg = ntohl(nla_get_be32(tb[NFTA_EXTHDR_DREG]));
- err = nft_validate_output_register(priv->dreg);
- if (err < 0)
- return err;
- return nft_validate_data_load(ctx, priv->dreg, NULL, NFT_DATA_VALUE);
+ return nft_validate_register_store(ctx, priv->dreg, NULL,
+ NFT_DATA_VALUE, priv->len);
}
static int nft_exthdr_dump(struct sk_buff *skb, const struct nft_expr *expr)
{
const struct nft_exthdr *priv = nft_expr_priv(expr);
- if (nla_put_be32(skb, NFTA_EXTHDR_DREG, htonl(priv->dreg)))
+ if (nft_dump_register(skb, NFTA_EXTHDR_DREG, priv->dreg))
goto nla_put_failure;
if (nla_put_u8(skb, NFTA_EXTHDR_TYPE, priv->type))
goto nla_put_failure;