Function ccp_perform_aes_gcm

dpdk/drivers/crypto/ccp/ccp_crypto.c:2350–2519

}

static int
ccp_perform_aes_gcm(struct rte_crypto_op *op, struct ccp_queue *cmd_q)
{
	struct ccp_session *session;
	union ccp_function function;
	uint8_t *iv;
	struct ccp_passthru pst;
	struct ccp_desc *desc;
	uint32_t tail;
	uint64_t *temp;
	phys_addr_t src_addr, dest_addr, key_addr, aad_addr;
	phys_addr_t digest_dest_addr;
	int length, non_align_len;

	session = CRYPTODEV_GET_SYM_SESS_PRIV(op->sym->session);
	iv = rte_crypto_op_ctod_offset(op, uint8_t *, session->iv.offset);
	key_addr = session->cipher.key_phys;

	src_addr = rte_pktmbuf_iova_offset(op->sym->m_src,
					      op->sym->aead.data.offset);
	if (unlikely(op->sym->m_dst != NULL))
		dest_addr = rte_pktmbuf_iova_offset(op->sym->m_dst,
						op->sym->aead.data.offset);
	else
		dest_addr = src_addr;
	rte_pktmbuf_append(op->sym->m_src, session->auth.ctx_len);
	digest_dest_addr = op->sym->aead.digest.phys_addr;
	temp = (uint64_t *)(op->sym->aead.digest.data + AES_BLOCK_SIZE);
	*temp++ = rte_bswap64(session->auth.aad_length << 3);
	*temp = rte_bswap64(op->sym->aead.data.length << 3);

	non_align_len = op->sym->aead.data.length % AES_BLOCK_SIZE;
	length = CCP_ALIGN(op->sym->aead.data.length, AES_BLOCK_SIZE);

	aad_addr = op->sym->aead.aad.phys_addr;

	/* CMD1 IV Passthru */
	rte_memcpy(session->cipher.nonce + AES_BLOCK_SIZE, iv,
		   session->iv.length);
	pst.src_addr = session->cipher.nonce_phys;
	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_NOOP;
	ccp_perform_passthru(&pst, cmd_q);

	/* CMD2 GHASH-AAD */
	function.raw = 0;
	CCP_AES_ENCRYPT(&function) = CCP_AES_MODE_GHASH_AAD;
	CCP_AES_MODE(&function) = CCP_AES_MODE_GHASH;
	CCP_AES_TYPE(&function) = session->cipher.ut.aes_type;

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

	CCP_CMD_ENGINE(desc) = CCP_ENGINE_AES;
	CCP_CMD_INIT(desc) = 1;