Function ccp_perform_3des

dpdk/drivers/crypto/ccp/ccp_crypto.c:2251–2348

}

static int
ccp_perform_3des(struct rte_crypto_op *op,
		struct ccp_queue *cmd_q,
		struct ccp_batch_info *b_info)
{
	struct ccp_session *session;
	union ccp_function function;
	unsigned char *lsb_buf;
	struct ccp_passthru pst;
	struct ccp_desc *desc;
	uint32_t tail;
	uint8_t *iv;
	phys_addr_t src_addr, dest_addr, key_addr;

	session = CRYPTODEV_GET_SYM_SESS_PRIV(op->sym->session);

	iv = rte_crypto_op_ctod_offset(op, uint8_t *, session->iv.offset);
	switch (session->cipher.um.des_mode) {
	case CCP_DES_MODE_CBC:
		lsb_buf = &(b_info->lsb_buf[b_info->lsb_buf_idx*CCP_SB_BYTES]);
		b_info->lsb_buf_idx++;

		rte_memcpy(lsb_buf + (CCP_SB_BYTES - session->iv.length),
			   iv, session->iv.length);
		pst.src_addr = (phys_addr_t)rte_mem_virt2iova((void *) lsb_buf);
		pst.dest_addr = (phys_addr_t)(cmd_q->sb_iv * CCP_SB_BYTES);
		pst.len = CCP_SB_BYTES;
		pst.dir = 1;
		pst.bit_mod = CCP_PASSTHRU_BITWISE_NOOP;
		pst.byte_swap = CCP_PASSTHRU_BYTESWAP_256BIT;
		ccp_perform_passthru(&pst, cmd_q);
		break;
	case CCP_DES_MODE_CFB:
	case CCP_DES_MODE_ECB:
		CCP_LOG_ERR("Unsupported DES cipher mode");
		return -ENOTSUP;
	}

	src_addr = rte_pktmbuf_iova_offset(op->sym->m_src,
					      op->sym->cipher.data.offset);
	if (unlikely(op->sym->m_dst != NULL))
		dest_addr =
			rte_pktmbuf_iova_offset(op->sym->m_dst,
						   op->sym->cipher.data.offset);
	else
		dest_addr = src_addr;

	key_addr = rte_mem_virt2iova(session->cipher.key_ccp);
	desc = &cmd_q->qbase_desc[cmd_q->qidx];

	memset(desc, 0, Q_DESC_SIZE);

	/* prepare desc for des command */
	CCP_CMD_ENGINE(desc) = CCP_ENGINE_3DES;

	CCP_CMD_SOC(desc) = 0;
	CCP_CMD_IOC(desc) = 0;
	CCP_CMD_INIT(desc) = 1;