Add support to emulate a CXL mem device support the "Disable Passphrase"
operation. The operation supports disabling of either a user or a master
passphrase. The emulation will provide support for both user and master
passphrase.
Signed-off-by: Dave Jiang <dave.ji...@intel.com>
---
tools/testing/cxl/test/mem.c | 76 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c
index 86be5e183b5c..40dccbeb9f30 100644
--- a/tools/testing/cxl/test/mem.c
+++ b/tools/testing/cxl/test/mem.c
@@ -217,6 +217,79 @@ static int mock_set_passphrase(struct cxl_dev_state
*cxlds, struct cxl_mbox_cmd
return 0;
}
+static int mock_disable_passphrase(struct cxl_dev_state *cxlds, struct
cxl_mbox_cmd *cmd)
+{
+ struct cxl_mock_mem_pdata *mdata = dev_get_platdata(cxlds->dev);
+ struct cxl_disable_pass *dis_pass;
+
+ if (cmd->size_in != sizeof(*dis_pass))
+ 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;
+ }
+
+ dis_pass = cmd->payload_in;
+ switch (dis_pass->type) {
+ case CXL_PMEM_SEC_PASS_MASTER:
+ if (mdata->security_state & CXL_PMEM_SEC_STATE_MASTER_PLIMIT) {
+ cmd->return_code = CXL_MBOX_CMD_RC_SECURITY;
+ return -ENXIO;
+ }
+
+ if (!(mdata->security_state &
CXL_PMEM_SEC_STATE_MASTER_PASS_SET)) {
+ cmd->return_code = CXL_MBOX_CMD_RC_SECURITY;
+ return -ENXIO;
+ }
+
+ if (memcmp(dis_pass->pass, mdata->master_pass,
NVDIMM_PASSPHRASE_LEN)) {
+ if (++mdata->master_limit == PASS_TRY_LIMIT)
+ mdata->security_state |=
CXL_PMEM_SEC_STATE_MASTER_PLIMIT;
+ cmd->return_code = CXL_MBOX_CMD_RC_PASSPHRASE;
+ return -ENXIO;
+ }
+
+ mdata->master_limit = 0;
+ memset(mdata->master_pass, 0, NVDIMM_PASSPHRASE_LEN);
+ mdata->security_state &= ~CXL_PMEM_SEC_STATE_MASTER_PASS_SET;
+ return 0;
+
+ case CXL_PMEM_SEC_PASS_USER:
+ 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_USER_PASS_SET)) {
+ cmd->return_code = CXL_MBOX_CMD_RC_SECURITY;
+ return -ENXIO;
+ }
+
+ if (memcmp(dis_pass->pass, 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;
+ memset(mdata->user_pass, 0, NVDIMM_PASSPHRASE_LEN);
+ mdata->security_state &= ~(CXL_PMEM_SEC_STATE_USER_PASS_SET |
+ CXL_PMEM_SEC_STATE_LOCKED);
+ return 0;
+
+ default:
+ cmd->return_code = CXL_MBOX_CMD_RC_INPUT;
+ return -EINVAL;
+ }
+
+ 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;
@@ -316,6 +389,9 @@ static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds,
struct cxl_mbox_cmd *
case CXL_MBOX_OP_SET_PASSPHRASE:
rc = mock_set_passphrase(cxlds, cmd);
break;
+ case CXL_MBOX_OP_DISABLE_PASSPHRASE:
+ rc = mock_disable_passphrase(cxlds, cmd);
+ break;
default:
break;
}
