Function ccp_perform_hmac

dpdk/drivers/crypto/ccp/ccp_crypto.c:1555–1725

}

static int
ccp_perform_hmac(struct rte_crypto_op *op,
		 struct ccp_queue *cmd_q)
{

	struct ccp_session *session;
	union ccp_function function;
	struct ccp_desc *desc;
	uint32_t tail;
	phys_addr_t src_addr, dest_addr, dest_addr_t;
	struct ccp_passthru pst;
	uint64_t auth_msg_bits;
	void *append_ptr;
	uint8_t *addr;

	session = CRYPTODEV_GET_SYM_SESS_PRIV(op->sym->session);
	addr = session->auth.pre_compute;

	src_addr = rte_pktmbuf_iova_offset(op->sym->m_src,
					      op->sym->auth.data.offset);
	append_ptr = (void *)rte_pktmbuf_append(op->sym->m_src,
						session->auth.ctx_len);
	dest_addr_t = dest_addr = (phys_addr_t)rte_mem_virt2iova(append_ptr);
	pst.src_addr = (phys_addr_t)rte_mem_virt2iova((void *)addr);

	/** Load PHash1 to LSB*/
	pst.dest_addr = (phys_addr_t)(cmd_q->sb_sha * CCP_SB_BYTES);
	pst.len = session->auth.ctx_len;
	pst.dir = 1;
	pst.bit_mod = CCP_PASSTHRU_BITWISE_NOOP;
	pst.byte_swap = CCP_PASSTHRU_BYTESWAP_NOOP;
	ccp_perform_passthru(&pst, cmd_q);

	/**sha engine command descriptor for IntermediateHash*/

	desc = &cmd_q->qbase_desc[cmd_q->qidx];
	memset(desc, 0, Q_DESC_SIZE);

	CCP_CMD_ENGINE(desc) = CCP_ENGINE_SHA;

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

	function.raw = 0;
	CCP_SHA_TYPE(&function) = session->auth.ut.sha_type;
	CCP_CMD_FUNCTION(desc) = function.raw;

	CCP_CMD_LEN(desc) = op->sym->auth.data.length;
	auth_msg_bits = (op->sym->auth.data.length +
			 session->auth.block_size)  * 8;

	CCP_CMD_SRC_LO(desc) = ((uint32_t)src_addr);
	CCP_CMD_SRC_HI(desc) = high32_value(src_addr);
	CCP_CMD_SRC_MEM(desc) = CCP_MEMTYPE_SYSTEM;