LCOV - code coverage report
Current view: top level - lib/env_dpdk - init.c (source / functions) Hit Total Coverage
Test: ut_cov_unit.info Lines: 0 311 0.0 %
Date: 2024-07-13 09:25:29 Functions: 0 12 0.0 %

          Line data    Source code
       1             : /*   SPDX-License-Identifier: BSD-3-Clause
       2             :  *   Copyright (C) 2017 Intel Corporation.
       3             :  *   All rights reserved.
       4             :  */
       5             : 
       6             : #include "spdk/stdinc.h"
       7             : 
       8             : #include "env_internal.h"
       9             : 
      10             : #include "spdk/version.h"
      11             : #include "spdk/env_dpdk.h"
      12             : #include "spdk/log.h"
      13             : #include "spdk/config.h"
      14             : 
      15             : #include <openssl/ssl.h>
      16             : #include <openssl/err.h>
      17             : 
      18             : #include <rte_config.h>
      19             : #include <rte_eal.h>
      20             : #include <rte_errno.h>
      21             : #include <rte_vfio.h>
      22             : 
      23             : #define SPDK_ENV_DPDK_DEFAULT_NAME              "spdk"
      24             : #define SPDK_ENV_DPDK_DEFAULT_SHM_ID            -1
      25             : #define SPDK_ENV_DPDK_DEFAULT_MEM_SIZE          -1
      26             : #define SPDK_ENV_DPDK_DEFAULT_MAIN_CORE         -1
      27             : #define SPDK_ENV_DPDK_DEFAULT_MEM_CHANNEL       -1
      28             : #define SPDK_ENV_DPDK_DEFAULT_CORE_MASK         "0x1"
      29             : #define SPDK_ENV_DPDK_DEFAULT_BASE_VIRTADDR     0x200000000000
      30             : 
      31             : #define DPDK_ALLOW_PARAM        "--allow"
      32             : #define DPDK_BLOCK_PARAM        "--block"
      33             : #define DPDK_MAIN_CORE_PARAM    "--main-lcore"
      34             : 
      35             : static char **g_eal_cmdline;
      36             : static int g_eal_cmdline_argcount;
      37             : static bool g_external_init = true;
      38             : 
      39             : static char *
      40           0 : _sprintf_alloc(const char *format, ...)
      41             : {
      42           0 :         va_list args;
      43           0 :         va_list args_copy;
      44             :         char *buf;
      45             :         size_t bufsize;
      46             :         int rc;
      47             : 
      48           0 :         va_start(args, format);
      49             : 
      50             :         /* Try with a small buffer first. */
      51           0 :         bufsize = 32;
      52             : 
      53             :         /* Limit maximum buffer size to something reasonable so we don't loop forever. */
      54           0 :         while (bufsize <= 1024 * 1024) {
      55           0 :                 buf = malloc(bufsize);
      56           0 :                 if (buf == NULL) {
      57           0 :                         va_end(args);
      58           0 :                         return NULL;
      59             :                 }
      60             : 
      61           0 :                 va_copy(args_copy, args);
      62           0 :                 rc = vsnprintf(buf, bufsize, format, args_copy);
      63           0 :                 va_end(args_copy);
      64             : 
      65             :                 /*
      66             :                  * If vsnprintf() returned a count within our current buffer size, we are done.
      67             :                  * The count does not include the \0 terminator, so rc == bufsize is not OK.
      68             :                  */
      69           0 :                 if (rc >= 0 && (size_t)rc < bufsize) {
      70           0 :                         va_end(args);
      71           0 :                         return buf;
      72             :                 }
      73             : 
      74             :                 /*
      75             :                  * vsnprintf() should return the required space, but some libc versions do not
      76             :                  * implement this correctly, so just double the buffer size and try again.
      77             :                  *
      78             :                  * We don't need the data in buf, so rather than realloc(), use free() and malloc()
      79             :                  * again to avoid a copy.
      80             :                  */
      81           0 :                 free(buf);
      82           0 :                 bufsize *= 2;
      83             :         }
      84             : 
      85           0 :         va_end(args);
      86           0 :         return NULL;
      87             : }
      88             : 
      89             : void
      90           0 : spdk_env_opts_init(struct spdk_env_opts *opts)
      91             : {
      92           0 :         if (!opts) {
      93           0 :                 return;
      94             :         }
      95             : 
      96           0 :         memset(opts, 0, sizeof(*opts));
      97             : 
      98           0 :         opts->name = SPDK_ENV_DPDK_DEFAULT_NAME;
      99           0 :         opts->core_mask = SPDK_ENV_DPDK_DEFAULT_CORE_MASK;
     100           0 :         opts->shm_id = SPDK_ENV_DPDK_DEFAULT_SHM_ID;
     101           0 :         opts->mem_size = SPDK_ENV_DPDK_DEFAULT_MEM_SIZE;
     102           0 :         opts->main_core = SPDK_ENV_DPDK_DEFAULT_MAIN_CORE;
     103           0 :         opts->mem_channel = SPDK_ENV_DPDK_DEFAULT_MEM_CHANNEL;
     104           0 :         opts->base_virtaddr = SPDK_ENV_DPDK_DEFAULT_BASE_VIRTADDR;
     105             : }
     106             : 
     107             : static void
     108           0 : free_args(char **args, int argcount)
     109             : {
     110             :         int i;
     111             : 
     112           0 :         if (args == NULL) {
     113           0 :                 return;
     114             :         }
     115             : 
     116           0 :         for (i = 0; i < argcount; i++) {
     117           0 :                 free(args[i]);
     118             :         }
     119             : 
     120           0 :         if (argcount) {
     121           0 :                 free(args);
     122             :         }
     123             : }
     124             : 
     125             : static char **
     126           0 : push_arg(char *args[], int *argcount, char *arg)
     127             : {
     128             :         char **tmp;
     129             : 
     130           0 :         if (arg == NULL) {
     131           0 :                 SPDK_ERRLOG("%s: NULL arg supplied\n", __func__);
     132           0 :                 free_args(args, *argcount);
     133           0 :                 return NULL;
     134             :         }
     135             : 
     136           0 :         tmp = realloc(args, sizeof(char *) * (*argcount + 1));
     137           0 :         if (tmp == NULL) {
     138           0 :                 free(arg);
     139           0 :                 free_args(args, *argcount);
     140           0 :                 return NULL;
     141             :         }
     142             : 
     143           0 :         tmp[*argcount] = arg;
     144           0 :         (*argcount)++;
     145             : 
     146           0 :         return tmp;
     147             : }
     148             : 
     149             : #if defined(__linux__) && defined(__x86_64__)
     150             : 
     151             : /* TODO: Can likely get this value from rlimits in the future */
     152             : #define SPDK_IOMMU_VA_REQUIRED_WIDTH 48
     153             : #define VTD_CAP_MGAW_SHIFT 16
     154             : #define VTD_CAP_MGAW_MASK (0x3F << VTD_CAP_MGAW_SHIFT)
     155             : #define RD_AMD_CAP_VASIZE_SHIFT 15
     156             : #define RD_AMD_CAP_VASIZE_MASK (0x7F << RD_AMD_CAP_VASIZE_SHIFT)
     157             : 
     158             : static int
     159           0 : get_iommu_width(void)
     160             : {
     161           0 :         int width = 0;
     162           0 :         glob_t glob_results = {};
     163             : 
     164             :         /* Break * and / into separate strings to appease check_format.sh comment style check. */
     165           0 :         glob("/sys/devices/virtual/iommu/dmar*" "/intel-iommu/cap", 0, NULL, &glob_results);
     166           0 :         glob("/sys/class/iommu/ivhd*" "/amd-iommu/cap", GLOB_APPEND, NULL, &glob_results);
     167             : 
     168           0 :         for (size_t i = 0; i < glob_results.gl_pathc; i++) {
     169           0 :                 const char *filename = glob_results.gl_pathv[0];
     170           0 :                 FILE *file = fopen(filename, "r");
     171           0 :                 uint64_t cap_reg = 0;
     172             : 
     173           0 :                 if (file == NULL) {
     174           0 :                         continue;
     175             :                 }
     176             : 
     177           0 :                 if (fscanf(file, "%" PRIx64, &cap_reg) == 1) {
     178           0 :                         if (strstr(filename, "intel-iommu") != NULL) {
     179             :                                 /* We have an Intel IOMMU */
     180           0 :                                 int mgaw = ((cap_reg & VTD_CAP_MGAW_MASK) >> VTD_CAP_MGAW_SHIFT) + 1;
     181             : 
     182           0 :                                 if (width == 0 || (mgaw > 0 && mgaw < width)) {
     183           0 :                                         width = mgaw;
     184             :                                 }
     185           0 :                         } else if (strstr(filename, "amd-iommu") != NULL) {
     186             :                                 /* We have an AMD IOMMU */
     187           0 :                                 int mgaw = ((cap_reg & RD_AMD_CAP_VASIZE_MASK) >> RD_AMD_CAP_VASIZE_SHIFT) + 1;
     188             : 
     189           0 :                                 if (width == 0 || (mgaw > 0 && mgaw < width)) {
     190           0 :                                         width = mgaw;
     191             :                                 }
     192             :                         }
     193             :                 }
     194             : 
     195           0 :                 fclose(file);
     196             :         }
     197             : 
     198           0 :         globfree(&glob_results);
     199           0 :         return width;
     200             : }
     201             : 
     202             : #endif
     203             : 
     204             : static int
     205           0 : build_eal_cmdline(const struct spdk_env_opts *opts)
     206             : {
     207           0 :         int argcount = 0;
     208             :         char **args;
     209             :         bool no_huge;
     210             : 
     211           0 :         args = NULL;
     212           0 :         no_huge = opts->no_huge || (opts->env_context && strstr(opts->env_context, "--no-huge") != NULL);
     213             : 
     214             :         /* set the program name */
     215           0 :         args = push_arg(args, &argcount, _sprintf_alloc("%s", opts->name));
     216           0 :         if (args == NULL) {
     217           0 :                 return -1;
     218             :         }
     219             : 
     220             :         /* disable shared configuration files when in single process mode. This allows for cleaner shutdown */
     221           0 :         if (opts->shm_id < 0) {
     222           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("%s", "--no-shconf"));
     223           0 :                 if (args == NULL) {
     224           0 :                         return -1;
     225             :                 }
     226             :         }
     227             : 
     228             :         /* Either lcore_map or core_mask must be set. If both, or none specified, fail */
     229           0 :         if ((opts->core_mask == NULL) == (opts->lcore_map == NULL)) {
     230           0 :                 if (opts->core_mask && opts->lcore_map) {
     231           0 :                         fprintf(stderr,
     232             :                                 "Both, lcore map and core mask are provided, while only one can be set\n");
     233             :                 } else {
     234           0 :                         fprintf(stderr, "Core mask or lcore map must be specified\n");
     235             :                 }
     236           0 :                 free_args(args, argcount);
     237           0 :                 return -1;
     238             :         }
     239             : 
     240           0 :         if (opts->lcore_map) {
     241             :                 /* If lcore list is set, generate --lcores parameter */
     242           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("--lcores=%s", opts->lcore_map));
     243           0 :         } else if (opts->core_mask[0] == '-') {
     244             :                 /*
     245             :                  * Set the coremask:
     246             :                  *
     247             :                  * - if it starts with '-', we presume it's literal EAL arguments such
     248             :                  *   as --lcores.
     249             :                  *
     250             :                  * - if it starts with '[', we presume it's a core list to use with the
     251             :                  *   -l option.
     252             :                  *
     253             :                  * - otherwise, it's a CPU mask of the form "0xff.." as expected by the
     254             :                  *   -c option.
     255             :                  */
     256           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("%s", opts->core_mask));
     257           0 :         } else if (opts->core_mask[0] == '[') {
     258           0 :                 char *l_arg = _sprintf_alloc("-l %s", opts->core_mask + 1);
     259             : 
     260           0 :                 if (l_arg != NULL) {
     261           0 :                         int len = strlen(l_arg);
     262             : 
     263           0 :                         if (l_arg[len - 1] == ']') {
     264           0 :                                 l_arg[len - 1] = '\0';
     265             :                         }
     266             :                 }
     267           0 :                 args = push_arg(args, &argcount, l_arg);
     268             :         } else {
     269           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("-c %s", opts->core_mask));
     270             :         }
     271             : 
     272           0 :         if (args == NULL) {
     273           0 :                 return -1;
     274             :         }
     275             : 
     276             :         /* set the memory channel number */
     277           0 :         if (opts->mem_channel > 0) {
     278           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("-n %d", opts->mem_channel));
     279           0 :                 if (args == NULL) {
     280           0 :                         return -1;
     281             :                 }
     282             :         }
     283             : 
     284             :         /* set the memory size */
     285           0 :         if (opts->mem_size >= 0) {
     286           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("-m %d", opts->mem_size));
     287           0 :                 if (args == NULL) {
     288           0 :                         return -1;
     289             :                 }
     290             :         }
     291             : 
     292             :         /* set no huge pages */
     293           0 :         if (opts->no_huge) {
     294           0 :                 mem_disable_huge_pages();
     295             :         }
     296             : 
     297             :         /* set the main core */
     298           0 :         if (opts->main_core > 0) {
     299           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("%s=%d",
     300             :                                 DPDK_MAIN_CORE_PARAM, opts->main_core));
     301           0 :                 if (args == NULL) {
     302           0 :                         return -1;
     303             :                 }
     304             :         }
     305             : 
     306             :         /* set no pci  if enabled */
     307           0 :         if (opts->no_pci) {
     308           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("--no-pci"));
     309           0 :                 if (args == NULL) {
     310           0 :                         return -1;
     311             :                 }
     312             :         }
     313             : 
     314           0 :         if (no_huge) {
     315           0 :                 if (opts->hugepage_single_segments || opts->unlink_hugepage || opts->hugedir) {
     316           0 :                         fprintf(stderr, "--no-huge invalid with other hugepage options\n");
     317           0 :                         free_args(args, argcount);
     318           0 :                         return -1;
     319             :                 }
     320             : 
     321           0 :                 if (opts->mem_size < 0) {
     322           0 :                         fprintf(stderr,
     323             :                                 "Disabling hugepages requires specifying how much memory "
     324             :                                 "will be allocated using -s parameter\n");
     325           0 :                         free_args(args, argcount);
     326           0 :                         return -1;
     327             :                 }
     328             : 
     329             :                 /* iova-mode=pa is incompatible with no_huge */
     330           0 :                 if (opts->iova_mode &&
     331           0 :                     (strcmp(opts->iova_mode, "pa") == 0)) {
     332           0 :                         fprintf(stderr, "iova-mode=pa is incompatible with specified "
     333             :                                 "no-huge parameter\n");
     334           0 :                         free_args(args, argcount);
     335           0 :                         return -1;
     336             :                 }
     337             : 
     338           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("--no-huge"));
     339           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("--iova-mode=va"));
     340             : 
     341             :         } else {
     342             :                 /* create just one hugetlbfs file */
     343           0 :                 if (opts->hugepage_single_segments) {
     344           0 :                         args = push_arg(args, &argcount, _sprintf_alloc("--single-file-segments"));
     345           0 :                         if (args == NULL) {
     346           0 :                                 return -1;
     347             :                         }
     348             :                 }
     349             : 
     350             :                 /* unlink hugepages after initialization */
     351             :                 /* Note: Automatically unlink hugepage when shm_id < 0, since it means we're not using
     352             :                  * multi-process so we don't need the hugepage links anymore.  But we need to make sure
     353             :                  * we don't specify --huge-unlink implicitly if --single-file-segments was specified since
     354             :                  * DPDK doesn't support that.
     355             :                  */
     356           0 :                 if (opts->unlink_hugepage ||
     357           0 :                     (opts->shm_id < 0 && !opts->hugepage_single_segments)) {
     358           0 :                         args = push_arg(args, &argcount, _sprintf_alloc("--huge-unlink"));
     359           0 :                         if (args == NULL) {
     360           0 :                                 return -1;
     361             :                         }
     362             :                 }
     363             : 
     364             :                 /* use a specific hugetlbfs mount */
     365           0 :                 if (opts->hugedir) {
     366           0 :                         args = push_arg(args, &argcount, _sprintf_alloc("--huge-dir=%s", opts->hugedir));
     367           0 :                         if (args == NULL) {
     368           0 :                                 return -1;
     369             :                         }
     370             :                 }
     371             :         }
     372             : 
     373           0 :         if (opts->num_pci_addr) {
     374             :                 size_t i;
     375           0 :                 char bdf[32];
     376           0 :                 struct spdk_pci_addr *pci_addr =
     377           0 :                                 opts->pci_blocked ? opts->pci_blocked : opts->pci_allowed;
     378             : 
     379           0 :                 for (i = 0; i < opts->num_pci_addr; i++) {
     380           0 :                         spdk_pci_addr_fmt(bdf, 32, &pci_addr[i]);
     381           0 :                         args = push_arg(args, &argcount, _sprintf_alloc("%s=%s",
     382           0 :                                         (opts->pci_blocked ? DPDK_BLOCK_PARAM : DPDK_ALLOW_PARAM),
     383             :                                         bdf));
     384           0 :                         if (args == NULL) {
     385           0 :                                 return -1;
     386             :                         }
     387             :                 }
     388             :         }
     389             : 
     390             :         /* Disable DPDK telemetry information by default, can be modified with env_context.
     391             :          * Prevents creation of dpdk_telemetry socket and additional pthread for it.
     392             :          */
     393           0 :         args = push_arg(args, &argcount, _sprintf_alloc("--no-telemetry"));
     394           0 :         if (args == NULL) {
     395           0 :                 return -1;
     396             :         }
     397             : 
     398             :         /* Lower default EAL loglevel to RTE_LOG_NOTICE - normal, but significant messages.
     399             :          * This can be overridden by specifying the same option in opts->env_context
     400             :          */
     401           0 :         args = push_arg(args, &argcount, strdup("--log-level=lib.eal:6"));
     402           0 :         if (args == NULL) {
     403           0 :                 return -1;
     404             :         }
     405             : 
     406             :         /* Lower default CRYPTO loglevel to RTE_LOG_ERR to avoid a ton of init msgs.
     407             :          * This can be overridden by specifying the same option in opts->env_context
     408             :          */
     409           0 :         args = push_arg(args, &argcount, strdup("--log-level=lib.cryptodev:5"));
     410           0 :         if (args == NULL) {
     411           0 :                 return -1;
     412             :         }
     413             : 
     414             :         /* `user1` log type is used by rte_vhost, which prints an INFO log for each received
     415             :          * vhost user message. We don't want that. The same log type is also used by a couple
     416             :          * of other DPDK libs, but none of which we make use right now. If necessary, this can
     417             :          * be overridden via opts->env_context.
     418             :          */
     419           0 :         args = push_arg(args, &argcount, strdup("--log-level=user1:6"));
     420           0 :         if (args == NULL) {
     421           0 :                 return -1;
     422             :         }
     423             : 
     424             : #ifdef __linux__
     425             : 
     426           0 :         if (opts->iova_mode) {
     427             :                 /* iova-mode=pa is incompatible with no_huge */
     428           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("--iova-mode=%s", opts->iova_mode));
     429           0 :                 if (args == NULL) {
     430           0 :                         return -1;
     431             :                 }
     432             :         } else {
     433             :                 /* When using vfio with enable_unsafe_noiommu_mode=Y, we need iova-mode=pa,
     434             :                  * but DPDK guesses it should be iova-mode=va. Add a check and force
     435             :                  * iova-mode=pa here. */
     436           0 :                 if (!no_huge && rte_vfio_noiommu_is_enabled()) {
     437           0 :                         args = push_arg(args, &argcount, _sprintf_alloc("--iova-mode=pa"));
     438           0 :                         if (args == NULL) {
     439           0 :                                 return -1;
     440             :                         }
     441             :                 }
     442             : 
     443             : #if defined(__x86_64__)
     444             :                 /* DPDK by default guesses that it should be using iova-mode=va so that it can
     445             :                  * support running as an unprivileged user. However, some systems (especially
     446             :                  * virtual machines) don't have an IOMMU capable of handling the full virtual
     447             :                  * address space and DPDK doesn't currently catch that. Add a check in SPDK
     448             :                  * and force iova-mode=pa here. */
     449           0 :                 if (!no_huge && get_iommu_width() < SPDK_IOMMU_VA_REQUIRED_WIDTH) {
     450           0 :                         args = push_arg(args, &argcount, _sprintf_alloc("--iova-mode=pa"));
     451           0 :                         if (args == NULL) {
     452           0 :                                 return -1;
     453             :                         }
     454             :                 }
     455             : #elif defined(__PPC64__)
     456             :                 /* On Linux + PowerPC, DPDK doesn't support VA mode at all. Unfortunately, it doesn't correctly
     457             :                  * auto-detect at the moment, so we'll just force it here. */
     458             :                 args = push_arg(args, &argcount, _sprintf_alloc("--iova-mode=pa"));
     459             :                 if (args == NULL) {
     460             :                         return -1;
     461             :                 }
     462             : #endif
     463             :         }
     464             : 
     465             : 
     466             :         /* Set the base virtual address - it must be an address that is not in the
     467             :          * ASAN shadow region, otherwise ASAN-enabled builds will ignore the
     468             :          * mmap hint.
     469             :          *
     470             :          * Ref: https://github.com/google/sanitizers/wiki/AddressSanitizerAlgorithm
     471             :          */
     472           0 :         args = push_arg(args, &argcount, _sprintf_alloc("--base-virtaddr=0x%" PRIx64, opts->base_virtaddr));
     473           0 :         if (args == NULL) {
     474           0 :                 return -1;
     475             :         }
     476             : 
     477             :         /* --match-allocation prevents DPDK from merging or splitting system memory allocations under the hood.
     478             :          * This is critical for RDMA when attempting to use an rte_mempool based buffer pool. If DPDK merges two
     479             :          * physically or IOVA contiguous memory regions, then when we go to allocate a buffer pool, it can split
     480             :          * the memory for a buffer over two allocations meaning the buffer will be split over a memory region.
     481             :          */
     482             : 
     483             :         /* --no-huge is incompatible with --match-allocations
     484             :          * Ref:  https://doc.dpdk.org/guides/prog_guide/env_abstraction_layer.html#hugepage-allocation-matching
     485             :          */
     486           0 :         if (!no_huge &&
     487           0 :             (!opts->env_context || strstr(opts->env_context, "--legacy-mem") == NULL)) {
     488           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("%s", "--match-allocations"));
     489           0 :                 if (args == NULL) {
     490           0 :                         return -1;
     491             :                 }
     492             :         }
     493             : 
     494           0 :         if (opts->shm_id < 0) {
     495           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("--file-prefix=spdk_pid%d",
     496             :                                 getpid()));
     497           0 :                 if (args == NULL) {
     498           0 :                         return -1;
     499             :                 }
     500             :         } else {
     501           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("--file-prefix=spdk%d",
     502             :                                 opts->shm_id));
     503           0 :                 if (args == NULL) {
     504           0 :                         return -1;
     505             :                 }
     506             : 
     507             :                 /* set the process type */
     508           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("--proc-type=auto"));
     509           0 :                 if (args == NULL) {
     510           0 :                         return -1;
     511             :                 }
     512             :         }
     513             : 
     514             :         /* --vfio-vf-token used for VF initialized by vfio_pci driver. */
     515           0 :         if (opts->vf_token) {
     516           0 :                 args = push_arg(args, &argcount, _sprintf_alloc("--vfio-vf-token=%s",
     517             :                                 opts->vf_token));
     518           0 :                 if (args == NULL) {
     519           0 :                         return -1;
     520             :                 }
     521             :         }
     522             : #endif
     523             : 
     524           0 :         if (opts->env_context) {
     525           0 :                 char *ptr = strdup(opts->env_context);
     526           0 :                 char *tok = strtok(ptr, " \t");
     527             : 
     528             :                 /* DPDK expects each argument as a separate string in the argv
     529             :                  * array, so we need to tokenize here in case the caller
     530             :                  * passed multiple arguments in the env_context string.
     531             :                  */
     532           0 :                 while (tok != NULL) {
     533           0 :                         args = push_arg(args, &argcount, strdup(tok));
     534           0 :                         tok = strtok(NULL, " \t");
     535             :                 }
     536             : 
     537           0 :                 free(ptr);
     538             :         }
     539             : 
     540           0 :         g_eal_cmdline = args;
     541           0 :         g_eal_cmdline_argcount = argcount;
     542           0 :         return argcount;
     543             : }
     544             : 
     545             : int
     546           0 : spdk_env_dpdk_post_init(bool legacy_mem)
     547             : {
     548             :         int rc;
     549             : 
     550           0 :         rc = pci_env_init();
     551           0 :         if (rc < 0) {
     552           0 :                 SPDK_ERRLOG("pci_env_init() failed\n");
     553           0 :                 return rc;
     554             :         }
     555             : 
     556           0 :         rc = mem_map_init(legacy_mem);
     557           0 :         if (rc < 0) {
     558           0 :                 SPDK_ERRLOG("Failed to allocate mem_map\n");
     559           0 :                 return rc;
     560             :         }
     561             : 
     562           0 :         rc = vtophys_init();
     563           0 :         if (rc < 0) {
     564           0 :                 SPDK_ERRLOG("Failed to initialize vtophys\n");
     565           0 :                 return rc;
     566             :         }
     567             : 
     568           0 :         return 0;
     569             : }
     570             : 
     571             : void
     572           0 : spdk_env_dpdk_post_fini(void)
     573             : {
     574           0 :         pci_env_fini();
     575             : 
     576           0 :         free_args(g_eal_cmdline, g_eal_cmdline_argcount);
     577           0 :         g_eal_cmdline = NULL;
     578           0 :         g_eal_cmdline_argcount = 0;
     579           0 : }
     580             : 
     581             : int
     582           0 : spdk_env_init(const struct spdk_env_opts *opts)
     583             : {
     584           0 :         char **dpdk_args = NULL;
     585           0 :         char *args_print = NULL, *args_tmp = NULL;
     586             :         OPENSSL_INIT_SETTINGS *settings;
     587             :         int i, rc;
     588             :         int orig_optind;
     589             :         bool legacy_mem;
     590             : 
     591             :         /* If SPDK env has been initialized before, then only pci env requires
     592             :          * reinitialization.
     593             :          */
     594           0 :         if (g_external_init == false) {
     595           0 :                 if (opts != NULL) {
     596           0 :                         fprintf(stderr, "Invalid arguments to reinitialize SPDK env\n");
     597           0 :                         return -EINVAL;
     598             :                 }
     599             : 
     600           0 :                 printf("Starting %s / %s reinitialization...\n", SPDK_VERSION_STRING, rte_version());
     601           0 :                 pci_env_reinit();
     602             : 
     603           0 :                 return 0;
     604             :         }
     605             : 
     606           0 :         if (opts == NULL) {
     607           0 :                 fprintf(stderr, "NULL arguments to initialize DPDK\n");
     608           0 :                 return -EINVAL;
     609             :         }
     610             : 
     611           0 :         settings = OPENSSL_INIT_new();
     612           0 :         if (!settings) {
     613           0 :                 fprintf(stderr, "Failed to create openssl settings object\n");
     614           0 :                 ERR_print_errors_fp(stderr);
     615           0 :                 return -ENOMEM;
     616             :         }
     617             : 
     618             : #if OPENSSL_VERSION_NUMBER >= 0x30000000 /* OPENSSL 3.0.0 */
     619             :         OPENSSL_INIT_set_config_file_flags(settings, 0);
     620             : #endif
     621           0 :         rc = OPENSSL_init_ssl(OPENSSL_INIT_LOAD_CONFIG, settings);
     622           0 :         if (rc != 1) {
     623           0 :                 fprintf(stderr, "Failed to initialize OpenSSL\n");
     624           0 :                 ERR_print_errors_fp(stderr);
     625           0 :                 return -EINVAL;
     626             :         }
     627           0 :         OPENSSL_INIT_free(settings);
     628             : 
     629           0 :         rc = build_eal_cmdline(opts);
     630           0 :         if (rc < 0) {
     631           0 :                 SPDK_ERRLOG("Invalid arguments to initialize DPDK\n");
     632           0 :                 return -EINVAL;
     633             :         }
     634             : 
     635           0 :         SPDK_PRINTF("Starting %s / %s initialization...\n", SPDK_VERSION_STRING, rte_version());
     636             : 
     637           0 :         args_print = _sprintf_alloc("[ DPDK EAL parameters: ");
     638           0 :         if (args_print == NULL) {
     639           0 :                 return -ENOMEM;
     640             :         }
     641           0 :         for (i = 0; i < g_eal_cmdline_argcount; i++) {
     642           0 :                 args_tmp = args_print;
     643           0 :                 args_print = _sprintf_alloc("%s%s ", args_tmp, g_eal_cmdline[i]);
     644           0 :                 if (args_print == NULL) {
     645           0 :                         free(args_tmp);
     646           0 :                         return -ENOMEM;
     647             :                 }
     648           0 :                 free(args_tmp);
     649             :         }
     650           0 :         SPDK_PRINTF("%s]\n", args_print);
     651           0 :         free(args_print);
     652             : 
     653             :         /* DPDK rearranges the array we pass to it, so make a copy
     654             :          * before passing so we can still free the individual strings
     655             :          * correctly.
     656             :          */
     657           0 :         dpdk_args = calloc(g_eal_cmdline_argcount, sizeof(char *));
     658           0 :         if (dpdk_args == NULL) {
     659           0 :                 SPDK_ERRLOG("Failed to allocate dpdk_args\n");
     660           0 :                 return -ENOMEM;
     661             :         }
     662           0 :         memcpy(dpdk_args, g_eal_cmdline, sizeof(char *) * g_eal_cmdline_argcount);
     663             : 
     664           0 :         fflush(stdout);
     665           0 :         orig_optind = optind;
     666           0 :         optind = 1;
     667           0 :         rc = rte_eal_init(g_eal_cmdline_argcount, dpdk_args);
     668           0 :         optind = orig_optind;
     669             : 
     670           0 :         free(dpdk_args);
     671             : 
     672           0 :         if (rc < 0) {
     673           0 :                 if (rte_errno == EALREADY) {
     674           0 :                         SPDK_ERRLOG("DPDK already initialized\n");
     675             :                 } else {
     676           0 :                         SPDK_ERRLOG("Failed to initialize DPDK\n");
     677             :                 }
     678           0 :                 return -rte_errno;
     679             :         }
     680             : 
     681           0 :         legacy_mem = false;
     682           0 :         if (opts->env_context && strstr(opts->env_context, "--legacy-mem") != NULL) {
     683           0 :                 legacy_mem = true;
     684             :         }
     685             : 
     686           0 :         rc = spdk_env_dpdk_post_init(legacy_mem);
     687           0 :         if (rc == 0) {
     688           0 :                 g_external_init = false;
     689             :         }
     690             : 
     691           0 :         return rc;
     692             : }
     693             : 
     694             : /* We use priority 101 which is the highest priority level available
     695             :  * to applications (the toolchains reserve 1 to 100 for internal usage).
     696             :  * This ensures this destructor runs last, after any other destructors
     697             :  * that might still need the environment up and running.
     698             :  */
     699             : __attribute__((destructor(101))) static void
     700           0 : dpdk_cleanup(void)
     701             : {
     702             :         /* Only call rte_eal_cleanup if the SPDK env library called rte_eal_init. */
     703           0 :         if (!g_external_init) {
     704           0 :                 rte_eal_cleanup();
     705             :         }
     706           0 : }
     707             : 
     708             : void
     709           0 : spdk_env_fini(void)
     710             : {
     711           0 :         spdk_env_dpdk_post_fini();
     712           0 : }
     713             : 
     714             : bool
     715           0 : spdk_env_dpdk_external_init(void)
     716             : {
     717           0 :         return g_external_init;
     718             : }

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