Commit 8e80b186 authored by Dave Jiang's avatar Dave Jiang Committed by Dan Williams
Browse files

tools/testing/cxl: Add "Unlock" security opcode support 



Add support to emulate a CXL mem device support the "Unlock" operation.

Reviewed-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: default avatarDave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/166983614730.2734609.2280484207184754073.stgit@djiang5-desk3.ch.intel.com


Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 2bb692f7

tools/testing/cxl/test/mem.c

+45 −0
Original line number Diff line number Diff line
@@ -331,6 +331,48 @@ static int mock_freeze_security(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd 
	return 0;

}



static int mock_unlock_security(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)

{

	struct cxl_mock_mem_pdata *mdata = dev_get_platdata(cxlds->dev);



	if (cmd->size_in != NVDIMM_PASSPHRASE_LEN)

		return -EINVAL;



	if (cmd->size_out != 0)

		return -EINVAL;



	if (mdata->security_state & CXL_PMEM_SEC_STATE_FROZEN) {

		cmd->return_code = CXL_MBOX_CMD_RC_SECURITY;

		return -ENXIO;

	}



	if (!(mdata->security_state & CXL_PMEM_SEC_STATE_USER_PASS_SET)) {

		cmd->return_code = CXL_MBOX_CMD_RC_SECURITY;

		return -ENXIO;

	}



	if (mdata->security_state & CXL_PMEM_SEC_STATE_USER_PLIMIT) {

		cmd->return_code = CXL_MBOX_CMD_RC_SECURITY;

		return -ENXIO;

	}



	if (!(mdata->security_state & CXL_PMEM_SEC_STATE_LOCKED)) {

		cmd->return_code = CXL_MBOX_CMD_RC_SECURITY;

		return -ENXIO;

	}



	if (memcmp(cmd->payload_in, mdata->user_pass, NVDIMM_PASSPHRASE_LEN)) {

		if (++mdata->user_limit == PASS_TRY_LIMIT)

			mdata->security_state |= CXL_PMEM_SEC_STATE_USER_PLIMIT;

		cmd->return_code = CXL_MBOX_CMD_RC_PASSPHRASE;

		return -ENXIO;

	}



	mdata->user_limit = 0;

	mdata->security_state &= ~CXL_PMEM_SEC_STATE_LOCKED;

	return 0;

}



static int mock_get_lsa(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)

{

	struct cxl_mbox_get_lsa *get_lsa = cmd->payload_in;
@@ -438,6 +480,9 @@ static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd * 
	case CXL_MBOX_OP_FREEZE_SECURITY:

		rc = mock_freeze_security(cxlds, cmd);

		break;

	case CXL_MBOX_OP_UNLOCK:

		rc = mock_unlock_security(cxlds, cmd);

		break;

	default:

		break;

	}