zio_do_crypt_data
ret = zio_do_crypt_data(encrypt, &dck->dck_key, ot, bswap, salt, iv,
int zio_do_crypt_data(boolean_t encrypt, zio_crypt_key_t *key,
ret = zio_do_crypt_data(encrypt, key, ot, byteswap, salt, iv, mac,