SPU_XTS_TWEAK_SIZE
SPU_XTS_TWEAK_SIZE);
sg_set_buf(sg++, rctx->msg_buf.iv_ctr, SPU_XTS_TWEAK_SIZE);
(payload_len >= SPU_XTS_TWEAK_SIZE))
payload_len -= SPU_XTS_TWEAK_SIZE;
max_payload -= SPU_XTS_TWEAK_SIZE;
max_payload -= SPU_XTS_TWEAK_SIZE;
SPU_XTS_TWEAK_SIZE);
bd->size = cpu_to_be16(data_size + SPU_XTS_TWEAK_SIZE);