Function ccp_perform_aes

dpdk/drivers/crypto/ccp/ccp_crypto.c:2166–2249

}

static int
ccp_perform_aes(struct rte_crypto_op *op,
		struct ccp_queue *cmd_q,
		struct ccp_batch_info *b_info)
{
	struct ccp_session *session;
	union ccp_function function;
	uint8_t *lsb_buf;
	struct ccp_passthru pst = {0};
	struct ccp_desc *desc;
	phys_addr_t src_addr, dest_addr, key_addr;
	uint8_t *iv;

	session = CRYPTODEV_GET_SYM_SESS_PRIV(op->sym->session);
	function.raw = 0;

	iv = rte_crypto_op_ctod_offset(op, uint8_t *, session->iv.offset);
	if (session->cipher.um.aes_mode != CCP_AES_MODE_ECB) {
		if (session->cipher.um.aes_mode == CCP_AES_MODE_CTR) {
			rte_memcpy(session->cipher.nonce + AES_BLOCK_SIZE,
				   iv, session->iv.length);
			pst.src_addr = (phys_addr_t)session->cipher.nonce_phys;
			CCP_AES_SIZE(&function) = 0x1F;
		} else {
			lsb_buf =
			&(b_info->lsb_buf[b_info->lsb_buf_idx*CCP_SB_BYTES]);
			rte_memcpy(lsb_buf +
				   (CCP_SB_BYTES - session->iv.length),
				   iv, session->iv.length);
			pst.src_addr = b_info->lsb_buf_phys +
				(b_info->lsb_buf_idx * CCP_SB_BYTES);
			b_info->lsb_buf_idx++;
		}

		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);
	}

	desc = &cmd_q->qbase_desc[cmd_q->qidx];

	src_addr = rte_pktmbuf_iova_offset(op->sym->m_src,
					      op->sym->cipher.data.offset);
	if (likely(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 = session->cipher.key_phys;

	/* prepare desc for aes command */
	CCP_CMD_ENGINE(desc) = CCP_ENGINE_AES;
	CCP_CMD_INIT(desc) = 1;
	CCP_CMD_EOM(desc) = 1;