vcap_decode_field
vcap_decode_field(actstream, &iter, actionfield[idx].width,
vcap_decode_field(maskstream, &miter, keyfield[idx].width,
vcap_decode_field(keystream, &kiter, keyfield[idx].width,
vcap_decode_field(mskstream, &iter, typefld->width, (u8 *)&mask);
vcap_decode_field(keystream, &iter, typefld->width, (u8 *)&value);