64 lines
1.1 KiB
C
64 lines
1.1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2021 Advanced Micro Devices, Inc.
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*
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* Author: Brijesh Singh <brijesh.singh@amd.com>
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*
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* SEV-SNP API spec is available at https://developer.amd.com/sev
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*/
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#ifndef __VIRT_SEVGUEST_H__
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#define __VIRT_SEVGUEST_H__
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#include <linux/types.h>
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#define MAX_AUTHTAG_LEN 32
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/* See SNP spec SNP_GUEST_REQUEST section for the structure */
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enum msg_type {
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SNP_MSG_TYPE_INVALID = 0,
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SNP_MSG_CPUID_REQ,
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SNP_MSG_CPUID_RSP,
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SNP_MSG_KEY_REQ,
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SNP_MSG_KEY_RSP,
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SNP_MSG_REPORT_REQ,
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SNP_MSG_REPORT_RSP,
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SNP_MSG_EXPORT_REQ,
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SNP_MSG_EXPORT_RSP,
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SNP_MSG_IMPORT_REQ,
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SNP_MSG_IMPORT_RSP,
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SNP_MSG_ABSORB_REQ,
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SNP_MSG_ABSORB_RSP,
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SNP_MSG_VMRK_REQ,
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SNP_MSG_VMRK_RSP,
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SNP_MSG_TYPE_MAX
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};
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enum aead_algo {
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SNP_AEAD_INVALID,
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SNP_AEAD_AES_256_GCM,
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};
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struct snp_guest_msg_hdr {
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u8 authtag[MAX_AUTHTAG_LEN];
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u64 msg_seqno;
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u8 rsvd1[8];
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u8 algo;
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u8 hdr_version;
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u16 hdr_sz;
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u8 msg_type;
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u8 msg_version;
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u16 msg_sz;
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u32 rsvd2;
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u8 msg_vmpck;
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u8 rsvd3[35];
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} __packed;
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struct snp_guest_msg {
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struct snp_guest_msg_hdr hdr;
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u8 payload[4000];
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} __packed;
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#endif /* __VIRT_SEVGUEST_H__ */
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