+ err = nft_data_init(NULL, &priv->data, sizeof(priv->data), &d,
+ tb[NFTA_BITWISE_DATA]);
+ if (err < 0)
+ return err;
+ if (d.type != NFT_DATA_VALUE || d.len != sizeof(u32) ||
+ priv->data.data[0] >= BITS_PER_TYPE(u32)) {
+ nft_data_release(&priv->data, d.type);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int nft_bitwise_init(const struct nft_ctx *ctx,
+ const struct nft_expr *expr,
+ const struct nlattr * const tb[])
+{
+ struct nft_bitwise *priv = nft_expr_priv(expr);
+ u32 len;
+ int err;
+
+ if (!tb[NFTA_BITWISE_SREG] ||
+ !tb[NFTA_BITWISE_DREG] ||
+ !tb[NFTA_BITWISE_LEN])
+ return -EINVAL;
+
+ err = nft_parse_u32_check(tb[NFTA_BITWISE_LEN], U8_MAX, &len);
+ if (err < 0)
+ return err;
+
+ priv->len = len;
+
+ priv->sreg = nft_parse_register(tb[NFTA_BITWISE_SREG]);
+ err = nft_validate_register_load(priv->sreg, priv->len);
+ if (err < 0)
+ return err;
+
+ priv->dreg = nft_parse_register(tb[NFTA_BITWISE_DREG]);
+ err = nft_validate_register_store(ctx, priv->dreg, NULL,
+ NFT_DATA_VALUE, priv->len);
+ if (err < 0)
+ return err;
+
+ if (tb[NFTA_BITWISE_OP]) {
+ priv->op = ntohl(nla_get_be32(tb[NFTA_BITWISE_OP]));
+ switch (priv->op) {
+ case NFT_BITWISE_BOOL:
+ case NFT_BITWISE_LSHIFT:
+ case NFT_BITWISE_RSHIFT:
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+ } else {
+ priv->op = NFT_BITWISE_BOOL;
+ }
+
+ switch(priv->op) {
+ case NFT_BITWISE_BOOL:
+ err = nft_bitwise_init_bool(priv, tb);
+ break;
+ case NFT_BITWISE_LSHIFT:
+ case NFT_BITWISE_RSHIFT:
+ err = nft_bitwise_init_shift(priv, tb);
+ break;
+ }
+
+ return err;
+}
+
+static int nft_bitwise_dump_bool(struct sk_buff *skb,
+ const struct nft_bitwise *priv)
+{