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 : va_list args;
43 : 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 0 : }
88 :
89 : void
90 0 : spdk_env_opts_init(struct spdk_env_opts *opts)
91 : {
92 : size_t opts_size;
93 :
94 0 : if (!opts) {
95 0 : return;
96 : }
97 :
98 0 : opts_size = opts->opts_size;
99 0 : memset(opts, 0, sizeof(*opts));
100 0 : opts->opts_size = opts_size;
101 :
102 0 : opts->name = SPDK_ENV_DPDK_DEFAULT_NAME;
103 0 : opts->core_mask = SPDK_ENV_DPDK_DEFAULT_CORE_MASK;
104 0 : opts->shm_id = SPDK_ENV_DPDK_DEFAULT_SHM_ID;
105 0 : opts->mem_size = SPDK_ENV_DPDK_DEFAULT_MEM_SIZE;
106 0 : opts->main_core = SPDK_ENV_DPDK_DEFAULT_MAIN_CORE;
107 0 : opts->mem_channel = SPDK_ENV_DPDK_DEFAULT_MEM_CHANNEL;
108 0 : opts->base_virtaddr = SPDK_ENV_DPDK_DEFAULT_BASE_VIRTADDR;
109 :
110 : #define SET_FIELD(field, value) \
111 : if (offsetof(struct spdk_env_opts, field) + sizeof(opts->field) <= opts->opts_size) { \
112 : opts->field = value; \
113 : }
114 :
115 0 : SET_FIELD(enforce_numa, false);
116 :
117 : #undef SET_FIELD
118 0 : }
119 :
120 : static void
121 0 : free_args(char **args, int argcount)
122 : {
123 : int i;
124 :
125 0 : if (args == NULL) {
126 0 : return;
127 : }
128 :
129 0 : for (i = 0; i < argcount; i++) {
130 0 : free(args[i]);
131 0 : }
132 :
133 0 : if (argcount) {
134 0 : free(args);
135 0 : }
136 0 : }
137 :
138 : static char **
139 0 : push_arg(char *args[], int *argcount, char *arg)
140 : {
141 : char **tmp;
142 :
143 0 : if (arg == NULL) {
144 0 : SPDK_ERRLOG("%s: NULL arg supplied\n", __func__);
145 0 : free_args(args, *argcount);
146 0 : return NULL;
147 : }
148 :
149 0 : tmp = realloc(args, sizeof(char *) * (*argcount + 1));
150 0 : if (tmp == NULL) {
151 0 : free(arg);
152 0 : free_args(args, *argcount);
153 0 : return NULL;
154 : }
155 :
156 0 : tmp[*argcount] = arg;
157 0 : (*argcount)++;
158 :
159 0 : return tmp;
160 0 : }
161 :
162 : #if defined(__linux__) && defined(__x86_64__)
163 :
164 : /* TODO: Can likely get this value from rlimits in the future */
165 : #define SPDK_IOMMU_VA_REQUIRED_WIDTH 48
166 : #define VTD_CAP_MGAW_SHIFT 16
167 : #define VTD_CAP_MGAW_MASK (0x3F << VTD_CAP_MGAW_SHIFT)
168 : #define RD_AMD_CAP_VASIZE_SHIFT 15
169 : #define RD_AMD_CAP_VASIZE_MASK (0x7F << RD_AMD_CAP_VASIZE_SHIFT)
170 :
171 : static int
172 : get_iommu_width(void)
173 : {
174 : int width = 0;
175 : glob_t glob_results = {};
176 :
177 : /* Break * and / into separate strings to appease check_format.sh comment style check. */
178 : glob("/sys/devices/virtual/iommu/dmar*" "/intel-iommu/cap", 0, NULL, &glob_results);
179 : glob("/sys/class/iommu/ivhd*" "/amd-iommu/cap", GLOB_APPEND, NULL, &glob_results);
180 :
181 : for (size_t i = 0; i < glob_results.gl_pathc; i++) {
182 : const char *filename = glob_results.gl_pathv[0];
183 : FILE *file = fopen(filename, "r");
184 : uint64_t cap_reg = 0;
185 :
186 : if (file == NULL) {
187 : continue;
188 : }
189 :
190 : if (fscanf(file, "%" PRIx64, &cap_reg) == 1) {
191 : if (strstr(filename, "intel-iommu") != NULL) {
192 : /* We have an Intel IOMMU */
193 : int mgaw = ((cap_reg & VTD_CAP_MGAW_MASK) >> VTD_CAP_MGAW_SHIFT) + 1;
194 :
195 : if (width == 0 || (mgaw > 0 && mgaw < width)) {
196 : width = mgaw;
197 : }
198 : } else if (strstr(filename, "amd-iommu") != NULL) {
199 : /* We have an AMD IOMMU */
200 : int mgaw = ((cap_reg & RD_AMD_CAP_VASIZE_MASK) >> RD_AMD_CAP_VASIZE_SHIFT) + 1;
201 :
202 : if (width == 0 || (mgaw > 0 && mgaw < width)) {
203 : width = mgaw;
204 : }
205 : }
206 : }
207 :
208 : fclose(file);
209 : }
210 :
211 : globfree(&glob_results);
212 : return width;
213 : }
214 :
215 : #endif
216 :
217 : static int
218 0 : build_eal_cmdline(const struct spdk_env_opts *opts)
219 : {
220 0 : int argcount = 0;
221 : char **args;
222 : bool no_huge;
223 :
224 0 : args = NULL;
225 0 : no_huge = opts->no_huge || (opts->env_context && strstr(opts->env_context, "--no-huge") != NULL);
226 :
227 : /* set the program name */
228 0 : args = push_arg(args, &argcount, _sprintf_alloc("%s", opts->name));
229 0 : if (args == NULL) {
230 0 : return -1;
231 : }
232 :
233 : /* disable shared configuration files when in single process mode. This allows for cleaner shutdown */
234 0 : if (opts->shm_id < 0) {
235 0 : args = push_arg(args, &argcount, _sprintf_alloc("%s", "--no-shconf"));
236 0 : if (args == NULL) {
237 0 : return -1;
238 : }
239 0 : }
240 :
241 : /* Either lcore_map or core_mask must be set. If both, or none specified, fail */
242 0 : if ((opts->core_mask == NULL) == (opts->lcore_map == NULL)) {
243 0 : if (opts->core_mask && opts->lcore_map) {
244 0 : fprintf(stderr,
245 : "Both, lcore map and core mask are provided, while only one can be set\n");
246 0 : } else {
247 0 : fprintf(stderr, "Core mask or lcore map must be specified\n");
248 : }
249 0 : free_args(args, argcount);
250 0 : return -1;
251 : }
252 :
253 0 : if (opts->lcore_map) {
254 : /* If lcore list is set, generate --lcores parameter */
255 0 : args = push_arg(args, &argcount, _sprintf_alloc("--lcores=%s", opts->lcore_map));
256 0 : } else if (opts->core_mask[0] == '-') {
257 : /*
258 : * Set the coremask:
259 : *
260 : * - if it starts with '-', we presume it's literal EAL arguments such
261 : * as --lcores.
262 : *
263 : * - if it starts with '[', we presume it's a core list to use with the
264 : * -l option.
265 : *
266 : * - otherwise, it's a CPU mask of the form "0xff.." as expected by the
267 : * -c option.
268 : */
269 0 : args = push_arg(args, &argcount, _sprintf_alloc("%s", opts->core_mask));
270 0 : } else if (opts->core_mask[0] == '[') {
271 0 : char *l_arg = _sprintf_alloc("-l %s", opts->core_mask + 1);
272 :
273 0 : if (l_arg != NULL) {
274 0 : int len = strlen(l_arg);
275 :
276 0 : if (l_arg[len - 1] == ']') {
277 0 : l_arg[len - 1] = '\0';
278 0 : }
279 0 : }
280 0 : args = push_arg(args, &argcount, l_arg);
281 0 : } else {
282 0 : args = push_arg(args, &argcount, _sprintf_alloc("-c %s", opts->core_mask));
283 : }
284 :
285 0 : if (args == NULL) {
286 0 : return -1;
287 : }
288 :
289 : /* set the memory channel number */
290 0 : if (opts->mem_channel > 0) {
291 0 : args = push_arg(args, &argcount, _sprintf_alloc("-n %d", opts->mem_channel));
292 0 : if (args == NULL) {
293 0 : return -1;
294 : }
295 0 : }
296 :
297 : /* set the memory size */
298 0 : if (opts->mem_size >= 0) {
299 0 : args = push_arg(args, &argcount, _sprintf_alloc("-m %d", opts->mem_size));
300 0 : if (args == NULL) {
301 0 : return -1;
302 : }
303 0 : }
304 :
305 : /* set no huge pages */
306 0 : if (opts->no_huge) {
307 0 : mem_disable_huge_pages();
308 0 : }
309 :
310 0 : if (opts->enforce_numa) {
311 0 : mem_enforce_numa();
312 0 : }
313 :
314 : /* set the main core */
315 0 : if (opts->main_core > 0) {
316 0 : args = push_arg(args, &argcount, _sprintf_alloc("%s=%d",
317 0 : DPDK_MAIN_CORE_PARAM, opts->main_core));
318 0 : if (args == NULL) {
319 0 : return -1;
320 : }
321 0 : }
322 :
323 : /* set no pci if enabled */
324 0 : if (opts->no_pci) {
325 0 : args = push_arg(args, &argcount, _sprintf_alloc("--no-pci"));
326 0 : if (args == NULL) {
327 0 : return -1;
328 : }
329 0 : }
330 :
331 0 : if (no_huge) {
332 0 : if (opts->hugepage_single_segments || opts->unlink_hugepage || opts->hugedir) {
333 0 : fprintf(stderr, "--no-huge invalid with other hugepage options\n");
334 0 : free_args(args, argcount);
335 0 : return -1;
336 : }
337 :
338 0 : if (opts->mem_size < 0) {
339 0 : fprintf(stderr,
340 : "Disabling hugepages requires specifying how much memory "
341 : "will be allocated using -s parameter\n");
342 0 : free_args(args, argcount);
343 0 : return -1;
344 : }
345 :
346 : /* iova-mode=pa is incompatible with no_huge */
347 0 : if (opts->iova_mode &&
348 0 : (strcmp(opts->iova_mode, "pa") == 0)) {
349 0 : fprintf(stderr, "iova-mode=pa is incompatible with specified "
350 : "no-huge parameter\n");
351 0 : free_args(args, argcount);
352 0 : return -1;
353 : }
354 :
355 0 : args = push_arg(args, &argcount, _sprintf_alloc("--no-huge"));
356 0 : args = push_arg(args, &argcount, _sprintf_alloc("--iova-mode=va"));
357 :
358 0 : } else {
359 : /* create just one hugetlbfs file */
360 0 : if (opts->hugepage_single_segments) {
361 0 : args = push_arg(args, &argcount, _sprintf_alloc("--single-file-segments"));
362 0 : if (args == NULL) {
363 0 : return -1;
364 : }
365 0 : }
366 :
367 : /* unlink hugepages after initialization */
368 : /* Note: Automatically unlink hugepage when shm_id < 0, since it means we're not using
369 : * multi-process so we don't need the hugepage links anymore. But we need to make sure
370 : * we don't specify --huge-unlink implicitly if --single-file-segments was specified since
371 : * DPDK doesn't support that.
372 : */
373 0 : if (opts->unlink_hugepage ||
374 0 : (opts->shm_id < 0 && !opts->hugepage_single_segments)) {
375 0 : args = push_arg(args, &argcount, _sprintf_alloc("--huge-unlink"));
376 0 : if (args == NULL) {
377 0 : return -1;
378 : }
379 0 : }
380 :
381 : /* use a specific hugetlbfs mount */
382 0 : if (opts->hugedir) {
383 0 : args = push_arg(args, &argcount, _sprintf_alloc("--huge-dir=%s", opts->hugedir));
384 0 : if (args == NULL) {
385 0 : return -1;
386 : }
387 0 : }
388 : }
389 :
390 0 : if (opts->num_pci_addr) {
391 : size_t i;
392 : char bdf[32];
393 0 : struct spdk_pci_addr *pci_addr =
394 0 : opts->pci_blocked ? opts->pci_blocked : opts->pci_allowed;
395 :
396 0 : for (i = 0; i < opts->num_pci_addr; i++) {
397 0 : spdk_pci_addr_fmt(bdf, 32, &pci_addr[i]);
398 0 : args = push_arg(args, &argcount, _sprintf_alloc("%s=%s",
399 0 : (opts->pci_blocked ? DPDK_BLOCK_PARAM : DPDK_ALLOW_PARAM),
400 0 : bdf));
401 0 : if (args == NULL) {
402 0 : return -1;
403 : }
404 0 : }
405 0 : }
406 :
407 : /* Disable DPDK telemetry information by default, can be modified with env_context.
408 : * Prevents creation of dpdk_telemetry socket and additional pthread for it.
409 : */
410 0 : args = push_arg(args, &argcount, _sprintf_alloc("--no-telemetry"));
411 0 : if (args == NULL) {
412 0 : return -1;
413 : }
414 :
415 : /* Lower default EAL loglevel to RTE_LOG_NOTICE - normal, but significant messages.
416 : * This can be overridden by specifying the same option in opts->env_context
417 : */
418 0 : args = push_arg(args, &argcount, strdup("--log-level=lib.eal:6"));
419 0 : if (args == NULL) {
420 0 : return -1;
421 : }
422 :
423 : /* Lower default CRYPTO loglevel to RTE_LOG_WARNING to avoid a ton of init msgs.
424 : * This can be overridden by specifying the same option in opts->env_context
425 : */
426 0 : args = push_arg(args, &argcount, strdup("--log-level=lib.cryptodev:5"));
427 0 : if (args == NULL) {
428 0 : return -1;
429 : }
430 :
431 : /* Lower default POWER loglevel to RTE_LOG_WARNING to avoid a ton of init msgs.
432 : * This can be overridden by specifying the same option in opts->env_context
433 : */
434 0 : args = push_arg(args, &argcount, strdup("--log-level=lib.power:5"));
435 0 : if (args == NULL) {
436 0 : return -1;
437 : }
438 :
439 : /* `user1` log type is used by rte_vhost, which prints an INFO log for each received
440 : * vhost user message. We don't want that. The same log type is also used by a couple
441 : * of other DPDK libs, but none of which we make use right now. If necessary, this can
442 : * be overridden via opts->env_context.
443 : */
444 0 : args = push_arg(args, &argcount, strdup("--log-level=user1:6"));
445 0 : if (args == NULL) {
446 0 : return -1;
447 : }
448 :
449 : #ifdef __linux__
450 :
451 : if (opts->iova_mode) {
452 : /* iova-mode=pa is incompatible with no_huge */
453 : args = push_arg(args, &argcount, _sprintf_alloc("--iova-mode=%s", opts->iova_mode));
454 : if (args == NULL) {
455 : return -1;
456 : }
457 : } else {
458 : /* When using vfio with enable_unsafe_noiommu_mode=Y, we need iova-mode=pa,
459 : * but DPDK guesses it should be iova-mode=va. Add a check and force
460 : * iova-mode=pa here. */
461 : if (!no_huge && rte_vfio_noiommu_is_enabled()) {
462 : args = push_arg(args, &argcount, _sprintf_alloc("--iova-mode=pa"));
463 : if (args == NULL) {
464 : return -1;
465 : }
466 : }
467 :
468 : #if defined(__x86_64__)
469 : /* DPDK by default guesses that it should be using iova-mode=va so that it can
470 : * support running as an unprivileged user. However, some systems (especially
471 : * virtual machines) don't have an IOMMU capable of handling the full virtual
472 : * address space and DPDK doesn't currently catch that. Add a check in SPDK
473 : * and force iova-mode=pa here. */
474 : if (!no_huge && get_iommu_width() < SPDK_IOMMU_VA_REQUIRED_WIDTH) {
475 : args = push_arg(args, &argcount, _sprintf_alloc("--iova-mode=pa"));
476 : if (args == NULL) {
477 : return -1;
478 : }
479 : }
480 : #elif defined(__PPC64__)
481 : /* On Linux + PowerPC, DPDK doesn't support VA mode at all. Unfortunately, it doesn't correctly
482 : * auto-detect at the moment, so we'll just force it here. */
483 : args = push_arg(args, &argcount, _sprintf_alloc("--iova-mode=pa"));
484 : if (args == NULL) {
485 : return -1;
486 : }
487 : #endif
488 : }
489 :
490 :
491 : /* Set the base virtual address - it must be an address that is not in the
492 : * ASAN shadow region, otherwise ASAN-enabled builds will ignore the
493 : * mmap hint.
494 : *
495 : * Ref: https://github.com/google/sanitizers/wiki/AddressSanitizerAlgorithm
496 : */
497 : args = push_arg(args, &argcount, _sprintf_alloc("--base-virtaddr=0x%" PRIx64, opts->base_virtaddr));
498 : if (args == NULL) {
499 : return -1;
500 : }
501 :
502 : /* --match-allocation prevents DPDK from merging or splitting system memory allocations under the hood.
503 : * This is critical for RDMA when attempting to use an rte_mempool based buffer pool. If DPDK merges two
504 : * physically or IOVA contiguous memory regions, then when we go to allocate a buffer pool, it can split
505 : * the memory for a buffer over two allocations meaning the buffer will be split over a memory region.
506 : */
507 :
508 : /* --no-huge is incompatible with --match-allocations
509 : * Ref: https://doc.dpdk.org/guides/prog_guide/env_abstraction_layer.html#hugepage-allocation-matching
510 : */
511 : if (!no_huge &&
512 : (!opts->env_context || strstr(opts->env_context, "--legacy-mem") == NULL)) {
513 : args = push_arg(args, &argcount, _sprintf_alloc("%s", "--match-allocations"));
514 : if (args == NULL) {
515 : return -1;
516 : }
517 : }
518 :
519 : if (opts->shm_id < 0) {
520 : args = push_arg(args, &argcount, _sprintf_alloc("--file-prefix=spdk_pid%d",
521 : getpid()));
522 : if (args == NULL) {
523 : return -1;
524 : }
525 : } else {
526 : args = push_arg(args, &argcount, _sprintf_alloc("--file-prefix=spdk%d",
527 : opts->shm_id));
528 : if (args == NULL) {
529 : return -1;
530 : }
531 :
532 : /* set the process type */
533 : args = push_arg(args, &argcount, _sprintf_alloc("--proc-type=auto"));
534 : if (args == NULL) {
535 : return -1;
536 : }
537 : }
538 :
539 : /* --vfio-vf-token used for VF initialized by vfio_pci driver. */
540 : if (opts->vf_token) {
541 : args = push_arg(args, &argcount, _sprintf_alloc("--vfio-vf-token=%s",
542 : opts->vf_token));
543 : if (args == NULL) {
544 : return -1;
545 : }
546 : }
547 : #endif
548 :
549 0 : if (opts->env_context) {
550 0 : char *sp = NULL;
551 0 : char *ptr = strdup(opts->env_context);
552 0 : char *tok = strtok_r(ptr, " \t", &sp);
553 :
554 : /* DPDK expects each argument as a separate string in the argv
555 : * array, so we need to tokenize here in case the caller
556 : * passed multiple arguments in the env_context string.
557 : */
558 0 : while (tok != NULL) {
559 0 : args = push_arg(args, &argcount, strdup(tok));
560 0 : tok = strtok_r(NULL, " \t", &sp);
561 : }
562 :
563 0 : free(ptr);
564 0 : }
565 :
566 0 : g_eal_cmdline = args;
567 0 : g_eal_cmdline_argcount = argcount;
568 0 : return argcount;
569 0 : }
570 :
571 : int
572 0 : spdk_env_dpdk_post_init(bool legacy_mem)
573 : {
574 : int rc;
575 :
576 0 : rc = pci_env_init();
577 0 : if (rc < 0) {
578 0 : SPDK_ERRLOG("pci_env_init() failed\n");
579 0 : return rc;
580 : }
581 :
582 0 : rc = mem_map_init(legacy_mem);
583 0 : if (rc < 0) {
584 0 : SPDK_ERRLOG("Failed to allocate mem_map\n");
585 0 : return rc;
586 : }
587 :
588 0 : rc = vtophys_init();
589 0 : if (rc < 0) {
590 0 : SPDK_ERRLOG("Failed to initialize vtophys\n");
591 0 : return rc;
592 : }
593 :
594 0 : return 0;
595 0 : }
596 :
597 : void
598 0 : spdk_env_dpdk_post_fini(void)
599 : {
600 0 : pci_env_fini();
601 :
602 0 : free_args(g_eal_cmdline, g_eal_cmdline_argcount);
603 0 : g_eal_cmdline = NULL;
604 0 : g_eal_cmdline_argcount = 0;
605 0 : }
606 :
607 : static void
608 0 : env_copy_opts(struct spdk_env_opts *opts, const struct spdk_env_opts *opts_user,
609 : size_t user_opts_size)
610 : {
611 0 : opts->opts_size = sizeof(*opts);
612 0 : spdk_env_opts_init(opts);
613 0 : memcpy(opts, opts_user, offsetof(struct spdk_env_opts, opts_size));
614 :
615 : #define SET_FIELD(field) \
616 : if (offsetof(struct spdk_env_opts, field) + sizeof(opts->field) <= user_opts_size) { \
617 : opts->field = opts_user->field; \
618 : }
619 :
620 0 : SET_FIELD(enforce_numa);
621 :
622 : #undef SET_FIELD
623 0 : }
624 :
625 : int
626 0 : spdk_env_init(const struct spdk_env_opts *opts_user)
627 : {
628 0 : struct spdk_env_opts opts_local = {};
629 0 : struct spdk_env_opts *opts = &opts_local;
630 0 : char **dpdk_args = NULL;
631 0 : char *args_print = NULL, *args_tmp = NULL;
632 : OPENSSL_INIT_SETTINGS *settings;
633 : int i, rc;
634 : int orig_optind;
635 : bool legacy_mem;
636 : size_t min_opts_size, user_opts_size;
637 :
638 : /* If SPDK env has been initialized before, then only pci env requires
639 : * reinitialization.
640 : */
641 0 : if (g_external_init == false) {
642 0 : if (opts_user != NULL) {
643 0 : fprintf(stderr, "Invalid arguments to reinitialize SPDK env\n");
644 0 : return -EINVAL;
645 : }
646 :
647 0 : printf("Starting %s / %s reinitialization...\n", SPDK_VERSION_STRING, rte_version());
648 0 : pci_env_reinit();
649 :
650 0 : return 0;
651 : }
652 :
653 0 : if (opts_user == NULL) {
654 0 : fprintf(stderr, "NULL arguments to initialize DPDK\n");
655 0 : return -EINVAL;
656 : }
657 :
658 0 : min_opts_size = offsetof(struct spdk_env_opts, opts_size) + sizeof(opts->opts_size);
659 0 : user_opts_size = opts_user->opts_size;
660 0 : if (user_opts_size < min_opts_size) {
661 0 : fprintf(stderr, "Invalid opts->opts_size %d too small, please set opts_size correctly\n",
662 0 : (int)opts_user->opts_size);
663 0 : user_opts_size = min_opts_size;
664 0 : }
665 :
666 0 : env_copy_opts(opts, opts_user, user_opts_size);
667 :
668 0 : settings = OPENSSL_INIT_new();
669 0 : if (!settings) {
670 0 : fprintf(stderr, "Failed to create openssl settings object\n");
671 0 : ERR_print_errors_fp(stderr);
672 0 : return -ENOMEM;
673 : }
674 :
675 : #if OPENSSL_VERSION_NUMBER >= 0x30000000 /* OPENSSL 3.0.0 */
676 0 : OPENSSL_INIT_set_config_file_flags(settings, 0);
677 : #endif
678 0 : rc = OPENSSL_init_ssl(OPENSSL_INIT_LOAD_CONFIG, settings);
679 0 : if (rc != 1) {
680 0 : fprintf(stderr, "Failed to initialize OpenSSL\n");
681 0 : ERR_print_errors_fp(stderr);
682 0 : return -EINVAL;
683 : }
684 0 : OPENSSL_INIT_free(settings);
685 :
686 0 : rc = build_eal_cmdline(opts);
687 0 : if (rc < 0) {
688 0 : SPDK_ERRLOG("Invalid arguments to initialize DPDK\n");
689 0 : return -EINVAL;
690 : }
691 :
692 0 : SPDK_PRINTF("Starting %s / %s initialization...\n", SPDK_VERSION_STRING, rte_version());
693 :
694 0 : args_print = _sprintf_alloc("[ DPDK EAL parameters: ");
695 0 : if (args_print == NULL) {
696 0 : return -ENOMEM;
697 : }
698 0 : for (i = 0; i < g_eal_cmdline_argcount; i++) {
699 0 : args_tmp = args_print;
700 0 : args_print = _sprintf_alloc("%s%s ", args_tmp, g_eal_cmdline[i]);
701 0 : if (args_print == NULL) {
702 0 : free(args_tmp);
703 0 : return -ENOMEM;
704 : }
705 0 : free(args_tmp);
706 0 : }
707 0 : SPDK_PRINTF("%s]\n", args_print);
708 0 : free(args_print);
709 :
710 : /* DPDK rearranges the array we pass to it, so make a copy
711 : * before passing so we can still free the individual strings
712 : * correctly.
713 : */
714 0 : dpdk_args = calloc(g_eal_cmdline_argcount, sizeof(char *));
715 0 : if (dpdk_args == NULL) {
716 0 : SPDK_ERRLOG("Failed to allocate dpdk_args\n");
717 0 : return -ENOMEM;
718 : }
719 0 : memcpy(dpdk_args, g_eal_cmdline, sizeof(char *) * g_eal_cmdline_argcount);
720 :
721 0 : fflush(stdout);
722 0 : orig_optind = optind;
723 0 : optind = 1;
724 0 : rc = rte_eal_init(g_eal_cmdline_argcount, dpdk_args);
725 0 : optind = orig_optind;
726 :
727 0 : free(dpdk_args);
728 :
729 0 : if (rc < 0) {
730 0 : if (rte_errno == EALREADY) {
731 0 : SPDK_ERRLOG("DPDK already initialized\n");
732 0 : } else {
733 0 : SPDK_ERRLOG("Failed to initialize DPDK\n");
734 : }
735 0 : return -rte_errno;
736 : }
737 :
738 0 : legacy_mem = false;
739 0 : if (opts->env_context && strstr(opts->env_context, "--legacy-mem") != NULL) {
740 0 : legacy_mem = true;
741 0 : }
742 :
743 0 : rc = spdk_env_dpdk_post_init(legacy_mem);
744 0 : if (rc == 0) {
745 0 : g_external_init = false;
746 0 : }
747 :
748 0 : return rc;
749 0 : }
750 :
751 : /* We use priority 101 which is the highest priority level available
752 : * to applications (the toolchains reserve 1 to 100 for internal usage).
753 : * This ensures this destructor runs last, after any other destructors
754 : * that might still need the environment up and running.
755 : */
756 : __attribute__((destructor(101))) static void
757 0 : dpdk_cleanup(void)
758 : {
759 : /* Only call rte_eal_cleanup if the SPDK env library called rte_eal_init. */
760 0 : if (!g_external_init) {
761 0 : rte_eal_cleanup();
762 0 : }
763 0 : }
764 :
765 : void
766 0 : spdk_env_fini(void)
767 : {
768 0 : spdk_env_dpdk_post_fini();
769 0 : }
770 :
771 : bool
772 0 : spdk_env_dpdk_external_init(void)
773 : {
774 0 : return g_external_init;
775 : }
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