Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Kuppuswamy Sathyanarayanan | 472 | 99.58% | 1 | 50.00% |
Mathieu Desnoyers | 2 | 0.42% | 1 | 50.00% |
Total | 474 | 2 |
// SPDX-License-Identifier: GPL-2.0 /* * Test TDX guest features * * Copyright (C) 2022 Intel Corporation. * * Author: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> */ #include <sys/ioctl.h> #include <errno.h> #include <fcntl.h> #include <linux/tdx-guest.h> #include "../kselftest_harness.h" #define TDX_GUEST_DEVNAME "/dev/tdx_guest" #define HEX_DUMP_SIZE 8 #define DEBUG 0 /** * struct tdreport_type - Type header of TDREPORT_STRUCT. * @type: Type of the TDREPORT (0 - SGX, 81 - TDX, rest are reserved) * @sub_type: Subtype of the TDREPORT (Default value is 0). * @version: TDREPORT version (Default value is 0). * @reserved: Added for future extension. * * More details can be found in TDX v1.0 module specification, sec * titled "REPORTTYPE". */ struct tdreport_type { __u8 type; __u8 sub_type; __u8 version; __u8 reserved; }; /** * struct reportmac - TDX guest report data, MAC and TEE hashes. * @type: TDREPORT type header. * @reserved1: Reserved for future extension. * @cpu_svn: CPU security version. * @tee_tcb_info_hash: SHA384 hash of TEE TCB INFO. * @tee_td_info_hash: SHA384 hash of TDINFO_STRUCT. * @reportdata: User defined unique data passed in TDG.MR.REPORT request. * @reserved2: Reserved for future extension. * @mac: CPU MAC ID. * * It is MAC-protected and contains hashes of the remainder of the * report structure along with user provided report data. More details can * be found in TDX v1.0 Module specification, sec titled "REPORTMACSTRUCT" */ struct reportmac { struct tdreport_type type; __u8 reserved1[12]; __u8 cpu_svn[16]; __u8 tee_tcb_info_hash[48]; __u8 tee_td_info_hash[48]; __u8 reportdata[64]; __u8 reserved2[32]; __u8 mac[32]; }; /** * struct td_info - TDX guest measurements and configuration. * @attr: TDX Guest attributes (like debug, spet_disable, etc). * @xfam: Extended features allowed mask. * @mrtd: Build time measurement register. * @mrconfigid: Software-defined ID for non-owner-defined configuration * of the guest - e.g., run-time or OS configuration. * @mrowner: Software-defined ID for the guest owner. * @mrownerconfig: Software-defined ID for owner-defined configuration of * the guest - e.g., specific to the workload. * @rtmr: Run time measurement registers. * @reserved: Added for future extension. * * It contains the measurements and initial configuration of the TDX guest * that was locked at initialization and a set of measurement registers * that are run-time extendable. More details can be found in TDX v1.0 * Module specification, sec titled "TDINFO_STRUCT". */ struct td_info { __u8 attr[8]; __u64 xfam; __u64 mrtd[6]; __u64 mrconfigid[6]; __u64 mrowner[6]; __u64 mrownerconfig[6]; __u64 rtmr[24]; __u64 reserved[14]; }; /* * struct tdreport - Output of TDCALL[TDG.MR.REPORT]. * @reportmac: Mac protected header of size 256 bytes. * @tee_tcb_info: Additional attestable elements in the TCB are not * reflected in the reportmac. * @reserved: Added for future extension. * @tdinfo: Measurements and configuration data of size 512 bytes. * * More details can be found in TDX v1.0 Module specification, sec * titled "TDREPORT_STRUCT". */ struct tdreport { struct reportmac reportmac; __u8 tee_tcb_info[239]; __u8 reserved[17]; struct td_info tdinfo; }; static void print_array_hex(const char *title, const char *prefix_str, const void *buf, int len) { int i, j, line_len, rowsize = HEX_DUMP_SIZE; const __u8 *ptr = buf; printf("\t\t%s", title); for (j = 0; j < len; j += rowsize) { line_len = rowsize < (len - j) ? rowsize : (len - j); printf("%s%.8x:", prefix_str, j); for (i = 0; i < line_len; i++) printf(" %.2x", ptr[j + i]); printf("\n"); } printf("\n"); } TEST(verify_report) { struct tdx_report_req req; struct tdreport *tdreport; int devfd, i; devfd = open(TDX_GUEST_DEVNAME, O_RDWR | O_SYNC); ASSERT_LT(0, devfd); /* Generate sample report data */ for (i = 0; i < TDX_REPORTDATA_LEN; i++) req.reportdata[i] = i; /* Get TDREPORT */ ASSERT_EQ(0, ioctl(devfd, TDX_CMD_GET_REPORT0, &req)); if (DEBUG) { print_array_hex("\n\t\tTDX report data\n", "", req.reportdata, sizeof(req.reportdata)); print_array_hex("\n\t\tTDX tdreport data\n", "", req.tdreport, sizeof(req.tdreport)); } /* Make sure TDREPORT data includes the REPORTDATA passed */ tdreport = (struct tdreport *)req.tdreport; ASSERT_EQ(0, memcmp(&tdreport->reportmac.reportdata[0], req.reportdata, sizeof(req.reportdata))); ASSERT_EQ(0, close(devfd)); } TEST_HARNESS_MAIN
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