From patchwork Tue Jul 20 04:55:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 12387547 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 95979C07E95 for ; Tue, 20 Jul 2021 04:56:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7CAB5610D0 for ; Tue, 20 Jul 2021 04:56:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242633AbhGTEPb (ORCPT ); Tue, 20 Jul 2021 00:15:31 -0400 Received: from mga14.intel.com ([192.55.52.115]:51770 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241125AbhGTEPV (ORCPT ); Tue, 20 Jul 2021 00:15:21 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10050"; a="210897317" X-IronPort-AV: E=Sophos;i="5.84,254,1620716400"; d="scan'208";a="210897317" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Jul 2021 21:55:59 -0700 X-IronPort-AV: E=Sophos;i="5.84,254,1620716400"; d="scan'208";a="431923383" Received: from ywei11-mobl1.amr.corp.intel.com (HELO skuppusw-desk1.amr.corp.intel.com) ([10.251.138.31]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Jul 2021 21:55:59 -0700 From: Kuppuswamy Sathyanarayanan To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Peter Zijlstra , Andy Lutomirski , Hans de Goede , Mark Gross , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: Peter H Anvin , Dave Hansen , Tony Luck , Dan Williams , Andi Kleen , Kirill Shutemov , Sean Christopherson , Kuppuswamy Sathyanarayanan , x86@kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v3 6/6] tools/tdx: Add a sample attestation user app Date: Mon, 19 Jul 2021 21:55:52 -0700 Message-Id: <20210720045552.2124688-7-sathyanarayanan.kuppuswamy@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210720045552.2124688-1-sathyanarayanan.kuppuswamy@linux.intel.com> References: <20210720045552.2124688-1-sathyanarayanan.kuppuswamy@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org This application uses the misc device /dev/tdx-attest to get TDREPORT from the TDX Module or request quote from the VMM. It tests following attestation features: - Get report using TDX_CMD_GET_TDREPORT IOCTL. - Using report data request quote from VMM using TDX_CMD_GEN_QUOTE IOCTL. - Get the quote size using TDX_CMD_GET_QUOTE_SIZE IOCTL. Reviewed-by: Tony Luck Reviewed-by: Andi Kleen Signed-off-by: Kuppuswamy Sathyanarayanan --- Changes since v1: * Removed MMIO reference in gen_quote(). tools/Makefile | 13 +- tools/tdx/Makefile | 19 +++ tools/tdx/attest/.gitignore | 2 + tools/tdx/attest/Makefile | 24 +++ tools/tdx/attest/tdx-attest-test.c | 232 +++++++++++++++++++++++++++++ 5 files changed, 284 insertions(+), 6 deletions(-) create mode 100644 tools/tdx/Makefile create mode 100644 tools/tdx/attest/.gitignore create mode 100644 tools/tdx/attest/Makefile create mode 100644 tools/tdx/attest/tdx-attest-test.c diff --git a/tools/Makefile b/tools/Makefile index 7e9d34ddd74c..5d68084511cb 100644 --- a/tools/Makefile +++ b/tools/Makefile @@ -30,6 +30,7 @@ help: @echo ' selftests - various kernel selftests' @echo ' bootconfig - boot config tool' @echo ' spi - spi tools' + @echo ' tdx - TDX related test tools' @echo ' tmon - thermal monitoring and tuning tool' @echo ' tracing - misc tracing tools' @echo ' turbostat - Intel CPU idle stats and freq reporting tool' @@ -65,7 +66,7 @@ acpi: FORCE cpupower: FORCE $(call descend,power/$@) -cgroup firewire hv guest bootconfig spi usb virtio vm bpf iio gpio objtool leds wmi pci firmware debugging tracing: FORCE +cgroup firewire hv guest bootconfig spi usb virtio vm bpf iio gpio objtool leds wmi pci firmware debugging tracing tdx: FORCE $(call descend,$@) bpf/%: FORCE @@ -104,7 +105,7 @@ all: acpi cgroup cpupower gpio hv firewire liblockdep \ perf selftests bootconfig spi turbostat usb \ virtio vm bpf x86_energy_perf_policy \ tmon freefall iio objtool kvm_stat wmi \ - pci debugging tracing + pci debugging tracing tdx acpi_install: $(call descend,power/$(@:_install=),install) @@ -112,7 +113,7 @@ acpi_install: cpupower_install: $(call descend,power/$(@:_install=),install) -cgroup_install firewire_install gpio_install hv_install iio_install perf_install bootconfig_install spi_install usb_install virtio_install vm_install bpf_install objtool_install wmi_install pci_install debugging_install tracing_install: +cgroup_install firewire_install gpio_install hv_install iio_install perf_install bootconfig_install spi_install usb_install virtio_install vm_install bpf_install objtool_install wmi_install pci_install debugging_install tracing_install tdx_install: $(call descend,$(@:_install=),install) liblockdep_install: @@ -139,7 +140,7 @@ install: acpi_install cgroup_install cpupower_install gpio_install \ virtio_install vm_install bpf_install x86_energy_perf_policy_install \ tmon_install freefall_install objtool_install kvm_stat_install \ wmi_install pci_install debugging_install intel-speed-select_install \ - tracing_install + tracing_install tdx_install acpi_clean: $(call descend,power/acpi,clean) @@ -147,7 +148,7 @@ acpi_clean: cpupower_clean: $(call descend,power/cpupower,clean) -cgroup_clean hv_clean firewire_clean bootconfig_clean spi_clean usb_clean virtio_clean vm_clean wmi_clean bpf_clean iio_clean gpio_clean objtool_clean leds_clean pci_clean firmware_clean debugging_clean tracing_clean: +cgroup_clean hv_clean firewire_clean bootconfig_clean spi_clean usb_clean virtio_clean vm_clean wmi_clean bpf_clean iio_clean gpio_clean objtool_clean leds_clean pci_clean firmware_clean debugging_clean tracing_clean tdx_clean: $(call descend,$(@:_clean=),clean) liblockdep_clean: @@ -186,6 +187,6 @@ clean: acpi_clean cgroup_clean cpupower_clean hv_clean firewire_clean \ vm_clean bpf_clean iio_clean x86_energy_perf_policy_clean tmon_clean \ freefall_clean build_clean libbpf_clean libsubcmd_clean liblockdep_clean \ gpio_clean objtool_clean leds_clean wmi_clean pci_clean firmware_clean debugging_clean \ - intel-speed-select_clean tracing_clean + intel-speed-select_clean tracing_clean tdx_clean .PHONY: FORCE diff --git a/tools/tdx/Makefile b/tools/tdx/Makefile new file mode 100644 index 000000000000..e2564557d463 --- /dev/null +++ b/tools/tdx/Makefile @@ -0,0 +1,19 @@ +# SPDX-License-Identifier: GPL-2.0 +include ../scripts/Makefile.include + +all: attest + +clean: attest_clean + +install: attest_install + +attest: + $(call descend,attest) + +attest_install: + $(call descend,attest,install) + +attest_clean: + $(call descend,attest,clean) + +.PHONY: all install clean attest latency_install latency_clean diff --git a/tools/tdx/attest/.gitignore b/tools/tdx/attest/.gitignore new file mode 100644 index 000000000000..5f819a8a6c49 --- /dev/null +++ b/tools/tdx/attest/.gitignore @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0 +tdx-attest-test diff --git a/tools/tdx/attest/Makefile b/tools/tdx/attest/Makefile new file mode 100644 index 000000000000..bf47ba718386 --- /dev/null +++ b/tools/tdx/attest/Makefile @@ -0,0 +1,24 @@ +# SPDX-License-Identifier: GPL-2.0 +# Makefile for vm tools +# +VAR_CFLAGS := $(shell pkg-config --cflags libtracefs 2>/dev/null) +VAR_LDLIBS := $(shell pkg-config --libs libtracefs 2>/dev/null) + +TARGETS = tdx-attest-test +CFLAGS = -static -Wall -Wextra -g -O2 $(VAR_CFLAGS) +LDFLAGS = -lpthread $(VAR_LDLIBS) + +all: $(TARGETS) + +%: %.c + $(CC) $(CFLAGS) -o $@ $< $(LDFLAGS) + +clean: + $(RM) tdx-attest-test + +prefix ?= /usr/local +sbindir ?= ${prefix}/sbin + +install: all + install -d $(DESTDIR)$(sbindir) + install -m 755 -p $(TARGETS) $(DESTDIR)$(sbindir) diff --git a/tools/tdx/attest/tdx-attest-test.c b/tools/tdx/attest/tdx-attest-test.c new file mode 100644 index 000000000000..cff33c3a0c32 --- /dev/null +++ b/tools/tdx/attest/tdx-attest-test.c @@ -0,0 +1,232 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * tdx-attest-test.c - utility to test TDX attestation feature. + * + * Copyright (C) 2020 - 2021 Intel Corporation. All rights reserved. + * + * Author: Kuppuswamy Sathyanarayanan + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include /* uintmax_t */ +#include +#include /* sysconf */ +#include + +#include "../../../include/uapi/misc/tdx.h" + +#define devname "/dev/tdx-attest" + +#define HEX_DUMP_SIZE 16 +#define MAX_ROW_SIZE 70 + +#define ATTESTATION_TEST_BIN_VERSION "0.1" + +struct tdx_attest_args { + bool is_dump_data; + bool is_get_tdreport; + bool is_get_quote_size; + bool is_gen_quote; + bool debug_mode; + char *out_file; +}; + +static void print_hex_dump(const char *title, const char *prefix_str, + const void *buf, int len) +{ + const __u8 *ptr = buf; + int i, rowsize = HEX_DUMP_SIZE; + + if (!len || !buf) + return; + + printf("\t\t%s", title); + + for (i = 0; i < len; i++) { + if (!(i % rowsize)) + printf("\n%s%.8x:", prefix_str, i); + printf(" %.2x", ptr[i]); + } + + printf("\n"); +} + +static void gen_report_data(__u8 *report_data, bool dump_data) +{ + int i; + + srand(time(NULL)); + + for (i = 0; i < TDX_REPORT_DATA_LEN; i++) + report_data[i] = rand(); + + if (dump_data) + print_hex_dump("\n\t\tTDX report data\n", " ", + report_data, TDX_REPORT_DATA_LEN); +} + +static int get_tdreport(int devfd, bool dump_data, __u8 *report_data) +{ + __u8 tdrdata[TDX_TDREPORT_LEN] = {0}; + int ret; + + if (!report_data) + report_data = tdrdata; + + gen_report_data(report_data, dump_data); + + ret = ioctl(devfd, TDX_CMD_GET_TDREPORT, report_data); + if (ret) { + printf("TDX_CMD_GET_TDREPORT ioctl() %d failed\n", ret); + return -EIO; + } + + if (dump_data) + print_hex_dump("\n\t\tTDX tdreport data\n", " ", report_data, + TDX_TDREPORT_LEN); + + return 0; +} + +static __u64 get_quote_size(int devfd) +{ + int ret; + __u64 quote_size; + + ret = ioctl(devfd, TDX_CMD_GET_QUOTE_SIZE, "e_size); + if (ret) { + printf("TDX_CMD_GET_QUOTE_SIZE ioctl() %d failed\n", ret); + return -EIO; + } + + printf("Quote size: %lld\n", quote_size); + + return quote_size; +} + +static int gen_quote(int devfd, bool dump_data) +{ + __u8 *quote_data; + __u64 quote_size; + int ret; + + quote_size = get_quote_size(devfd); + + quote_data = malloc(sizeof(char) * quote_size); + if (!quote_data) { + printf("%s queue data alloc failed\n", devname); + return -ENOMEM; + } + + ret = get_tdreport(devfd, dump_data, quote_data); + if (ret) { + printf("TDX_CMD_GET_TDREPORT ioctl() %d failed\n", ret); + goto done; + } + + ret = ioctl(devfd, TDX_CMD_GEN_QUOTE, quote_data); + if (ret) { + printf("TDX_CMD_GEN_QUOTE ioctl() %d failed\n", ret); + goto done; + } + + print_hex_dump("\n\t\tTDX Quote data\n", " ", quote_data, + quote_size); + +done: + free(quote_data); + + return ret; +} + +static void usage(void) +{ + puts("\nUsage:\n"); + puts("tdx_attest [options] \n"); + + puts("Attestation device test utility."); + + puts("\nOptions:\n"); + puts(" -d, --dump Dump tdreport/tdquote data"); + puts(" -r, --get-tdreport Get TDREPORT data"); + puts(" -g, --gen-quote Generate TDQUOTE"); + puts(" -s, --get-quote-size Get TDQUOTE size"); +} + +int main(int argc, char **argv) +{ + int ret, devfd; + struct tdx_attest_args args = {0}; + + static const struct option longopts[] = { + { "dump", no_argument, NULL, 'd' }, + { "get-tdreport", required_argument, NULL, 'r' }, + { "gen-quote", required_argument, NULL, 'g' }, + { "gen-quote-size", required_argument, NULL, 's' }, + { "version", no_argument, NULL, 'V' }, + { NULL, 0, NULL, 0 } + }; + + while ((ret = getopt_long(argc, argv, "hdrgsV", longopts, + NULL)) != -1) { + switch (ret) { + case 'd': + args.is_dump_data = true; + break; + case 'r': + args.is_get_tdreport = true; + break; + case 'g': + args.is_gen_quote = true; + break; + case 's': + args.is_get_quote_size = true; + break; + case 'h': + usage(); + return 0; + case 'V': + printf("Version: %s\n", ATTESTATION_TEST_BIN_VERSION); + return 0; + default: + printf("Invalid options\n"); + usage(); + return -EINVAL; + } + } + + devfd = open(devname, O_RDWR | O_SYNC); + if (devfd < 0) { + printf("%s open() failed\n", devname); + return -ENODEV; + } + + if (args.is_get_quote_size) + get_quote_size(devfd); + + if (args.is_get_tdreport) + get_tdreport(devfd, args.is_dump_data, NULL); + + if (args.is_gen_quote) + gen_quote(devfd, args.is_dump_data); + + close(devfd); + + return 0; +}