Module protocol

The module includes the definitions of data structures according to SEV-SNP specification.

Structs

GuestFieldSelect

Indicate which guest-selectable fields will be mixed into the key. See GUEST_FIELD_SELECT in Table 19, “SEV Secure Nested Paging Firmware ABI specification”, Revision 1.55.

SnpDerivedKeyReq

Request structure for the SNP_GET_DERIVED_KEY ioctl. See MSG_KEY_REQ in Table 18, “SEV Secure Nested Paging Firmware ABI specification”, Revision 1.55.

SnpDerivedKeyResp

Response structure for the SNP_GET_DERIVED_KEY ioctl. See MSG_KEY_RSP in Table 20, “SEV Secure Nested Paging Firmware ABI specification”, Revision 1.55.

SnpGuestRequestIoctl

Ioctl struct defined by Linux.

SnpReport

Report structure. See ATTESTATION_REPORT in Table 22, “SEV Secure Nested Paging Firmware ABI specification”, Revision 1.55.

SnpReportReq

Request structure for the SNP_GET_REPORT ioctl. See MSG_REPORT_REQ in Table 21, “SEV Secure Nested Paging Firmware ABI specification”, Revision 1.55.

SnpReportResp

Response structure for the SNP_GET_REPORT ioctl. See MSG_REPORT_RSP in Table 24, “SEV Secure Nested Paging Firmware ABI specification”, Revision 1.55.

VmmErrorCode

VMM error code.

Constants

SNP_DERIVED_KEY_SIZE

See DERIVED_KEY in Table 20, “SEV Secure Nested Paging Firmware ABI specification”, Revision 1.55.

SNP_GUEST_REQ_IOC_TYPE

Ioctl type defined by Linux.

SNP_GUEST_REQ_MSG_VERSION

Value for the msg_version member in SNP_GUEST_REQ_MSG_VERSION. Use 1 for now.

SNP_REPORT_DATA_SIZE

Size of report_data member in SnpReport.

SNP_REPORT_SIZE

Size of the SnpReport.