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1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
3
4#define _GNU_SOURCE
5#include <errno.h>
6#include <fcntl.h>
7#include <signal.h>
8#include <stdarg.h>
9#include <stdio.h>
10#include <stdlib.h>
11#include <string.h>
12#include <time.h>
13#include <unistd.h>
14#include <net/if.h>
15#include <sys/ioctl.h>
16#include <sys/types.h>
17#include <sys/stat.h>
18#include <sys/syscall.h>
19#include <dirent.h>
20
21#include <linux/err.h>
22#include <linux/perf_event.h>
23#include <linux/sizes.h>
24
25#include <bpf/bpf.h>
26#include <bpf/btf.h>
27#include <bpf/libbpf.h>
28#include <bpf/bpf_gen_internal.h>
29#include <bpf/skel_internal.h>
30
31#include "cfg.h"
32#include "main.h"
33#include "xlated_dumper.h"
34
35#define BPF_METADATA_PREFIX "bpf_metadata_"
36#define BPF_METADATA_PREFIX_LEN (sizeof(BPF_METADATA_PREFIX) - 1)
37
38const char * const prog_type_name[] = {
39 [BPF_PROG_TYPE_UNSPEC] = "unspec",
40 [BPF_PROG_TYPE_SOCKET_FILTER] = "socket_filter",
41 [BPF_PROG_TYPE_KPROBE] = "kprobe",
42 [BPF_PROG_TYPE_SCHED_CLS] = "sched_cls",
43 [BPF_PROG_TYPE_SCHED_ACT] = "sched_act",
44 [BPF_PROG_TYPE_TRACEPOINT] = "tracepoint",
45 [BPF_PROG_TYPE_XDP] = "xdp",
46 [BPF_PROG_TYPE_PERF_EVENT] = "perf_event",
47 [BPF_PROG_TYPE_CGROUP_SKB] = "cgroup_skb",
48 [BPF_PROG_TYPE_CGROUP_SOCK] = "cgroup_sock",
49 [BPF_PROG_TYPE_LWT_IN] = "lwt_in",
50 [BPF_PROG_TYPE_LWT_OUT] = "lwt_out",
51 [BPF_PROG_TYPE_LWT_XMIT] = "lwt_xmit",
52 [BPF_PROG_TYPE_SOCK_OPS] = "sock_ops",
53 [BPF_PROG_TYPE_SK_SKB] = "sk_skb",
54 [BPF_PROG_TYPE_CGROUP_DEVICE] = "cgroup_device",
55 [BPF_PROG_TYPE_SK_MSG] = "sk_msg",
56 [BPF_PROG_TYPE_RAW_TRACEPOINT] = "raw_tracepoint",
57 [BPF_PROG_TYPE_CGROUP_SOCK_ADDR] = "cgroup_sock_addr",
58 [BPF_PROG_TYPE_LWT_SEG6LOCAL] = "lwt_seg6local",
59 [BPF_PROG_TYPE_LIRC_MODE2] = "lirc_mode2",
60 [BPF_PROG_TYPE_SK_REUSEPORT] = "sk_reuseport",
61 [BPF_PROG_TYPE_FLOW_DISSECTOR] = "flow_dissector",
62 [BPF_PROG_TYPE_CGROUP_SYSCTL] = "cgroup_sysctl",
63 [BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE] = "raw_tracepoint_writable",
64 [BPF_PROG_TYPE_CGROUP_SOCKOPT] = "cgroup_sockopt",
65 [BPF_PROG_TYPE_TRACING] = "tracing",
66 [BPF_PROG_TYPE_STRUCT_OPS] = "struct_ops",
67 [BPF_PROG_TYPE_EXT] = "ext",
68 [BPF_PROG_TYPE_LSM] = "lsm",
69 [BPF_PROG_TYPE_SK_LOOKUP] = "sk_lookup",
70};
71
72const size_t prog_type_name_size = ARRAY_SIZE(prog_type_name);
73
74enum dump_mode {
75 DUMP_JITED,
76 DUMP_XLATED,
77};
78
79static const char * const attach_type_strings[] = {
80 [BPF_SK_SKB_STREAM_PARSER] = "stream_parser",
81 [BPF_SK_SKB_STREAM_VERDICT] = "stream_verdict",
82 [BPF_SK_SKB_VERDICT] = "skb_verdict",
83 [BPF_SK_MSG_VERDICT] = "msg_verdict",
84 [BPF_FLOW_DISSECTOR] = "flow_dissector",
85 [__MAX_BPF_ATTACH_TYPE] = NULL,
86};
87
88static enum bpf_attach_type parse_attach_type(const char *str)
89{
90 enum bpf_attach_type type;
91
92 for (type = 0; type < __MAX_BPF_ATTACH_TYPE; type++) {
93 if (attach_type_strings[type] &&
94 is_prefix(str, attach_type_strings[type]))
95 return type;
96 }
97
98 return __MAX_BPF_ATTACH_TYPE;
99}
100
101static void print_boot_time(__u64 nsecs, char *buf, unsigned int size)
102{
103 struct timespec real_time_ts, boot_time_ts;
104 time_t wallclock_secs;
105 struct tm load_tm;
106
107 buf[--size] = '\0';
108
109 if (clock_gettime(CLOCK_REALTIME, &real_time_ts) ||
110 clock_gettime(CLOCK_BOOTTIME, &boot_time_ts)) {
111 perror("Can't read clocks");
112 snprintf(buf, size, "%llu", nsecs / 1000000000);
113 return;
114 }
115
116 wallclock_secs = (real_time_ts.tv_sec - boot_time_ts.tv_sec) +
117 (real_time_ts.tv_nsec - boot_time_ts.tv_nsec + nsecs) /
118 1000000000;
119
120
121 if (!localtime_r(&wallclock_secs, &load_tm)) {
122 snprintf(buf, size, "%llu", nsecs / 1000000000);
123 return;
124 }
125
126 if (json_output)
127 strftime(buf, size, "%s", &load_tm);
128 else
129 strftime(buf, size, "%FT%T%z", &load_tm);
130}
131
132static void show_prog_maps(int fd, __u32 num_maps)
133{
134 struct bpf_prog_info info = {};
135 __u32 len = sizeof(info);
136 __u32 map_ids[num_maps];
137 unsigned int i;
138 int err;
139
140 info.nr_map_ids = num_maps;
141 info.map_ids = ptr_to_u64(map_ids);
142
143 err = bpf_obj_get_info_by_fd(fd, &info, &len);
144 if (err || !info.nr_map_ids)
145 return;
146
147 if (json_output) {
148 jsonw_name(json_wtr, "map_ids");
149 jsonw_start_array(json_wtr);
150 for (i = 0; i < info.nr_map_ids; i++)
151 jsonw_uint(json_wtr, map_ids[i]);
152 jsonw_end_array(json_wtr);
153 } else {
154 printf(" map_ids ");
155 for (i = 0; i < info.nr_map_ids; i++)
156 printf("%u%s", map_ids[i],
157 i == info.nr_map_ids - 1 ? "" : ",");
158 }
159}
160
161static void *find_metadata(int prog_fd, struct bpf_map_info *map_info)
162{
163 struct bpf_prog_info prog_info;
164 __u32 prog_info_len;
165 __u32 map_info_len;
166 void *value = NULL;
167 __u32 *map_ids;
168 int nr_maps;
169 int key = 0;
170 int map_fd;
171 int ret;
172 __u32 i;
173
174 memset(&prog_info, 0, sizeof(prog_info));
175 prog_info_len = sizeof(prog_info);
176 ret = bpf_obj_get_info_by_fd(prog_fd, &prog_info, &prog_info_len);
177 if (ret)
178 return NULL;
179
180 if (!prog_info.nr_map_ids)
181 return NULL;
182
183 map_ids = calloc(prog_info.nr_map_ids, sizeof(__u32));
184 if (!map_ids)
185 return NULL;
186
187 nr_maps = prog_info.nr_map_ids;
188 memset(&prog_info, 0, sizeof(prog_info));
189 prog_info.nr_map_ids = nr_maps;
190 prog_info.map_ids = ptr_to_u64(map_ids);
191 prog_info_len = sizeof(prog_info);
192
193 ret = bpf_obj_get_info_by_fd(prog_fd, &prog_info, &prog_info_len);
194 if (ret)
195 goto free_map_ids;
196
197 for (i = 0; i < prog_info.nr_map_ids; i++) {
198 map_fd = bpf_map_get_fd_by_id(map_ids[i]);
199 if (map_fd < 0)
200 goto free_map_ids;
201
202 memset(map_info, 0, sizeof(*map_info));
203 map_info_len = sizeof(*map_info);
204 ret = bpf_obj_get_info_by_fd(map_fd, map_info, &map_info_len);
205 if (ret < 0) {
206 close(map_fd);
207 goto free_map_ids;
208 }
209
210 if (map_info->type != BPF_MAP_TYPE_ARRAY ||
211 map_info->key_size != sizeof(int) ||
212 map_info->max_entries != 1 ||
213 !map_info->btf_value_type_id ||
214 !strstr(map_info->name, ".rodata")) {
215 close(map_fd);
216 continue;
217 }
218
219 value = malloc(map_info->value_size);
220 if (!value) {
221 close(map_fd);
222 goto free_map_ids;
223 }
224
225 if (bpf_map_lookup_elem(map_fd, &key, value)) {
226 close(map_fd);
227 free(value);
228 value = NULL;
229 goto free_map_ids;
230 }
231
232 close(map_fd);
233 break;
234 }
235
236free_map_ids:
237 free(map_ids);
238 return value;
239}
240
241static bool has_metadata_prefix(const char *s)
242{
243 return strncmp(s, BPF_METADATA_PREFIX, BPF_METADATA_PREFIX_LEN) == 0;
244}
245
246static void show_prog_metadata(int fd, __u32 num_maps)
247{
248 const struct btf_type *t_datasec, *t_var;
249 struct bpf_map_info map_info;
250 struct btf_var_secinfo *vsi;
251 bool printed_header = false;
252 struct btf *btf = NULL;
253 unsigned int i, vlen;
254 void *value = NULL;
255 const char *name;
256 int err;
257
258 if (!num_maps)
259 return;
260
261 memset(&map_info, 0, sizeof(map_info));
262 value = find_metadata(fd, &map_info);
263 if (!value)
264 return;
265
266 err = btf__get_from_id(map_info.btf_id, &btf);
267 if (err || !btf)
268 goto out_free;
269
270 t_datasec = btf__type_by_id(btf, map_info.btf_value_type_id);
271 if (!btf_is_datasec(t_datasec))
272 goto out_free;
273
274 vlen = btf_vlen(t_datasec);
275 vsi = btf_var_secinfos(t_datasec);
276
277 /* We don't proceed to check the kinds of the elements of the DATASEC.
278 * The verifier enforces them to be BTF_KIND_VAR.
279 */
280
281 if (json_output) {
282 struct btf_dumper d = {
283 .btf = btf,
284 .jw = json_wtr,
285 .is_plain_text = false,
286 };
287
288 for (i = 0; i < vlen; i++, vsi++) {
289 t_var = btf__type_by_id(btf, vsi->type);
290 name = btf__name_by_offset(btf, t_var->name_off);
291
292 if (!has_metadata_prefix(name))
293 continue;
294
295 if (!printed_header) {
296 jsonw_name(json_wtr, "metadata");
297 jsonw_start_object(json_wtr);
298 printed_header = true;
299 }
300
301 jsonw_name(json_wtr, name + BPF_METADATA_PREFIX_LEN);
302 err = btf_dumper_type(&d, t_var->type, value + vsi->offset);
303 if (err) {
304 p_err("btf dump failed: %d", err);
305 break;
306 }
307 }
308 if (printed_header)
309 jsonw_end_object(json_wtr);
310 } else {
311 json_writer_t *btf_wtr = jsonw_new(stdout);
312 struct btf_dumper d = {
313 .btf = btf,
314 .jw = btf_wtr,
315 .is_plain_text = true,
316 };
317
318 if (!btf_wtr) {
319 p_err("jsonw alloc failed");
320 goto out_free;
321 }
322
323 for (i = 0; i < vlen; i++, vsi++) {
324 t_var = btf__type_by_id(btf, vsi->type);
325 name = btf__name_by_offset(btf, t_var->name_off);
326
327 if (!has_metadata_prefix(name))
328 continue;
329
330 if (!printed_header) {
331 printf("\tmetadata:");
332 printed_header = true;
333 }
334
335 printf("\n\t\t%s = ", name + BPF_METADATA_PREFIX_LEN);
336
337 jsonw_reset(btf_wtr);
338 err = btf_dumper_type(&d, t_var->type, value + vsi->offset);
339 if (err) {
340 p_err("btf dump failed: %d", err);
341 break;
342 }
343 }
344 if (printed_header)
345 jsonw_destroy(&btf_wtr);
346 }
347
348out_free:
349 btf__free(btf);
350 free(value);
351}
352
353static void print_prog_header_json(struct bpf_prog_info *info)
354{
355 jsonw_uint_field(json_wtr, "id", info->id);
356 if (info->type < ARRAY_SIZE(prog_type_name))
357 jsonw_string_field(json_wtr, "type",
358 prog_type_name[info->type]);
359 else
360 jsonw_uint_field(json_wtr, "type", info->type);
361
362 if (*info->name)
363 jsonw_string_field(json_wtr, "name", info->name);
364
365 jsonw_name(json_wtr, "tag");
366 jsonw_printf(json_wtr, "\"" BPF_TAG_FMT "\"",
367 info->tag[0], info->tag[1], info->tag[2], info->tag[3],
368 info->tag[4], info->tag[5], info->tag[6], info->tag[7]);
369
370 jsonw_bool_field(json_wtr, "gpl_compatible", info->gpl_compatible);
371 if (info->run_time_ns) {
372 jsonw_uint_field(json_wtr, "run_time_ns", info->run_time_ns);
373 jsonw_uint_field(json_wtr, "run_cnt", info->run_cnt);
374 }
375 if (info->recursion_misses)
376 jsonw_uint_field(json_wtr, "recursion_misses", info->recursion_misses);
377}
378
379static void print_prog_json(struct bpf_prog_info *info, int fd)
380{
381 char *memlock;
382
383 jsonw_start_object(json_wtr);
384 print_prog_header_json(info);
385 print_dev_json(info->ifindex, info->netns_dev, info->netns_ino);
386
387 if (info->load_time) {
388 char buf[32];
389
390 print_boot_time(info->load_time, buf, sizeof(buf));
391
392 /* Piggy back on load_time, since 0 uid is a valid one */
393 jsonw_name(json_wtr, "loaded_at");
394 jsonw_printf(json_wtr, "%s", buf);
395 jsonw_uint_field(json_wtr, "uid", info->created_by_uid);
396 }
397
398 jsonw_uint_field(json_wtr, "bytes_xlated", info->xlated_prog_len);
399
400 if (info->jited_prog_len) {
401 jsonw_bool_field(json_wtr, "jited", true);
402 jsonw_uint_field(json_wtr, "bytes_jited", info->jited_prog_len);
403 } else {
404 jsonw_bool_field(json_wtr, "jited", false);
405 }
406
407 memlock = get_fdinfo(fd, "memlock");
408 if (memlock)
409 jsonw_int_field(json_wtr, "bytes_memlock", atoi(memlock));
410 free(memlock);
411
412 if (info->nr_map_ids)
413 show_prog_maps(fd, info->nr_map_ids);
414
415 if (info->btf_id)
416 jsonw_int_field(json_wtr, "btf_id", info->btf_id);
417
418 if (!hash_empty(prog_table.table)) {
419 struct pinned_obj *obj;
420
421 jsonw_name(json_wtr, "pinned");
422 jsonw_start_array(json_wtr);
423 hash_for_each_possible(prog_table.table, obj, hash, info->id) {
424 if (obj->id == info->id)
425 jsonw_string(json_wtr, obj->path);
426 }
427 jsonw_end_array(json_wtr);
428 }
429
430 emit_obj_refs_json(&refs_table, info->id, json_wtr);
431
432 show_prog_metadata(fd, info->nr_map_ids);
433
434 jsonw_end_object(json_wtr);
435}
436
437static void print_prog_header_plain(struct bpf_prog_info *info)
438{
439 printf("%u: ", info->id);
440 if (info->type < ARRAY_SIZE(prog_type_name))
441 printf("%s ", prog_type_name[info->type]);
442 else
443 printf("type %u ", info->type);
444
445 if (*info->name)
446 printf("name %s ", info->name);
447
448 printf("tag ");
449 fprint_hex(stdout, info->tag, BPF_TAG_SIZE, "");
450 print_dev_plain(info->ifindex, info->netns_dev, info->netns_ino);
451 printf("%s", info->gpl_compatible ? " gpl" : "");
452 if (info->run_time_ns)
453 printf(" run_time_ns %lld run_cnt %lld",
454 info->run_time_ns, info->run_cnt);
455 if (info->recursion_misses)
456 printf(" recursion_misses %lld", info->recursion_misses);
457 printf("\n");
458}
459
460static void print_prog_plain(struct bpf_prog_info *info, int fd)
461{
462 char *memlock;
463
464 print_prog_header_plain(info);
465
466 if (info->load_time) {
467 char buf[32];
468
469 print_boot_time(info->load_time, buf, sizeof(buf));
470
471 /* Piggy back on load_time, since 0 uid is a valid one */
472 printf("\tloaded_at %s uid %u\n", buf, info->created_by_uid);
473 }
474
475 printf("\txlated %uB", info->xlated_prog_len);
476
477 if (info->jited_prog_len)
478 printf(" jited %uB", info->jited_prog_len);
479 else
480 printf(" not jited");
481
482 memlock = get_fdinfo(fd, "memlock");
483 if (memlock)
484 printf(" memlock %sB", memlock);
485 free(memlock);
486
487 if (info->nr_map_ids)
488 show_prog_maps(fd, info->nr_map_ids);
489
490 if (!hash_empty(prog_table.table)) {
491 struct pinned_obj *obj;
492
493 hash_for_each_possible(prog_table.table, obj, hash, info->id) {
494 if (obj->id == info->id)
495 printf("\n\tpinned %s", obj->path);
496 }
497 }
498
499 if (info->btf_id)
500 printf("\n\tbtf_id %d", info->btf_id);
501
502 emit_obj_refs_plain(&refs_table, info->id, "\n\tpids ");
503
504 printf("\n");
505
506 show_prog_metadata(fd, info->nr_map_ids);
507}
508
509static int show_prog(int fd)
510{
511 struct bpf_prog_info info = {};
512 __u32 len = sizeof(info);
513 int err;
514
515 err = bpf_obj_get_info_by_fd(fd, &info, &len);
516 if (err) {
517 p_err("can't get prog info: %s", strerror(errno));
518 return -1;
519 }
520
521 if (json_output)
522 print_prog_json(&info, fd);
523 else
524 print_prog_plain(&info, fd);
525
526 return 0;
527}
528
529static int do_show_subset(int argc, char **argv)
530{
531 int *fds = NULL;
532 int nb_fds, i;
533 int err = -1;
534
535 fds = malloc(sizeof(int));
536 if (!fds) {
537 p_err("mem alloc failed");
538 return -1;
539 }
540 nb_fds = prog_parse_fds(&argc, &argv, &fds);
541 if (nb_fds < 1)
542 goto exit_free;
543
544 if (json_output && nb_fds > 1)
545 jsonw_start_array(json_wtr); /* root array */
546 for (i = 0; i < nb_fds; i++) {
547 err = show_prog(fds[i]);
548 if (err) {
549 for (; i < nb_fds; i++)
550 close(fds[i]);
551 break;
552 }
553 close(fds[i]);
554 }
555 if (json_output && nb_fds > 1)
556 jsonw_end_array(json_wtr); /* root array */
557
558exit_free:
559 free(fds);
560 return err;
561}
562
563static int do_show(int argc, char **argv)
564{
565 __u32 id = 0;
566 int err;
567 int fd;
568
569 if (show_pinned)
570 build_pinned_obj_table(&prog_table, BPF_OBJ_PROG);
571 build_obj_refs_table(&refs_table, BPF_OBJ_PROG);
572
573 if (argc == 2)
574 return do_show_subset(argc, argv);
575
576 if (argc)
577 return BAD_ARG();
578
579 if (json_output)
580 jsonw_start_array(json_wtr);
581 while (true) {
582 err = bpf_prog_get_next_id(id, &id);
583 if (err) {
584 if (errno == ENOENT) {
585 err = 0;
586 break;
587 }
588 p_err("can't get next program: %s%s", strerror(errno),
589 errno == EINVAL ? " -- kernel too old?" : "");
590 err = -1;
591 break;
592 }
593
594 fd = bpf_prog_get_fd_by_id(id);
595 if (fd < 0) {
596 if (errno == ENOENT)
597 continue;
598 p_err("can't get prog by id (%u): %s",
599 id, strerror(errno));
600 err = -1;
601 break;
602 }
603
604 err = show_prog(fd);
605 close(fd);
606 if (err)
607 break;
608 }
609
610 if (json_output)
611 jsonw_end_array(json_wtr);
612
613 delete_obj_refs_table(&refs_table);
614
615 return err;
616}
617
618static int
619prog_dump(struct bpf_prog_info *info, enum dump_mode mode,
620 char *filepath, bool opcodes, bool visual, bool linum)
621{
622 struct bpf_prog_linfo *prog_linfo = NULL;
623 const char *disasm_opt = NULL;
624 struct dump_data dd = {};
625 void *func_info = NULL;
626 struct btf *btf = NULL;
627 char func_sig[1024];
628 unsigned char *buf;
629 __u32 member_len;
630 ssize_t n;
631 int fd;
632
633 if (mode == DUMP_JITED) {
634 if (info->jited_prog_len == 0 || !info->jited_prog_insns) {
635 p_info("no instructions returned");
636 return -1;
637 }
638 buf = u64_to_ptr(info->jited_prog_insns);
639 member_len = info->jited_prog_len;
640 } else { /* DUMP_XLATED */
641 if (info->xlated_prog_len == 0 || !info->xlated_prog_insns) {
642 p_err("error retrieving insn dump: kernel.kptr_restrict set?");
643 return -1;
644 }
645 buf = u64_to_ptr(info->xlated_prog_insns);
646 member_len = info->xlated_prog_len;
647 }
648
649 if (info->btf_id && btf__get_from_id(info->btf_id, &btf)) {
650 p_err("failed to get btf");
651 return -1;
652 }
653
654 func_info = u64_to_ptr(info->func_info);
655
656 if (info->nr_line_info) {
657 prog_linfo = bpf_prog_linfo__new(info);
658 if (!prog_linfo)
659 p_info("error in processing bpf_line_info. continue without it.");
660 }
661
662 if (filepath) {
663 fd = open(filepath, O_WRONLY | O_CREAT | O_TRUNC, 0600);
664 if (fd < 0) {
665 p_err("can't open file %s: %s", filepath,
666 strerror(errno));
667 return -1;
668 }
669
670 n = write(fd, buf, member_len);
671 close(fd);
672 if (n != (ssize_t)member_len) {
673 p_err("error writing output file: %s",
674 n < 0 ? strerror(errno) : "short write");
675 return -1;
676 }
677
678 if (json_output)
679 jsonw_null(json_wtr);
680 } else if (mode == DUMP_JITED) {
681 const char *name = NULL;
682
683 if (info->ifindex) {
684 name = ifindex_to_bfd_params(info->ifindex,
685 info->netns_dev,
686 info->netns_ino,
687 &disasm_opt);
688 if (!name)
689 return -1;
690 }
691
692 if (info->nr_jited_func_lens && info->jited_func_lens) {
693 struct kernel_sym *sym = NULL;
694 struct bpf_func_info *record;
695 char sym_name[SYM_MAX_NAME];
696 unsigned char *img = buf;
697 __u64 *ksyms = NULL;
698 __u32 *lens;
699 __u32 i;
700 if (info->nr_jited_ksyms) {
701 kernel_syms_load(&dd);
702 ksyms = u64_to_ptr(info->jited_ksyms);
703 }
704
705 if (json_output)
706 jsonw_start_array(json_wtr);
707
708 lens = u64_to_ptr(info->jited_func_lens);
709 for (i = 0; i < info->nr_jited_func_lens; i++) {
710 if (ksyms) {
711 sym = kernel_syms_search(&dd, ksyms[i]);
712 if (sym)
713 sprintf(sym_name, "%s", sym->name);
714 else
715 sprintf(sym_name, "0x%016llx", ksyms[i]);
716 } else {
717 strcpy(sym_name, "unknown");
718 }
719
720 if (func_info) {
721 record = func_info + i * info->func_info_rec_size;
722 btf_dumper_type_only(btf, record->type_id,
723 func_sig,
724 sizeof(func_sig));
725 }
726
727 if (json_output) {
728 jsonw_start_object(json_wtr);
729 if (func_info && func_sig[0] != '\0') {
730 jsonw_name(json_wtr, "proto");
731 jsonw_string(json_wtr, func_sig);
732 }
733 jsonw_name(json_wtr, "name");
734 jsonw_string(json_wtr, sym_name);
735 jsonw_name(json_wtr, "insns");
736 } else {
737 if (func_info && func_sig[0] != '\0')
738 printf("%s:\n", func_sig);
739 printf("%s:\n", sym_name);
740 }
741
742 disasm_print_insn(img, lens[i], opcodes,
743 name, disasm_opt, btf,
744 prog_linfo, ksyms[i], i,
745 linum);
746
747 img += lens[i];
748
749 if (json_output)
750 jsonw_end_object(json_wtr);
751 else
752 printf("\n");
753 }
754
755 if (json_output)
756 jsonw_end_array(json_wtr);
757 } else {
758 disasm_print_insn(buf, member_len, opcodes, name,
759 disasm_opt, btf, NULL, 0, 0, false);
760 }
761 } else if (visual) {
762 if (json_output)
763 jsonw_null(json_wtr);
764 else
765 dump_xlated_cfg(buf, member_len);
766 } else {
767 kernel_syms_load(&dd);
768 dd.nr_jited_ksyms = info->nr_jited_ksyms;
769 dd.jited_ksyms = u64_to_ptr(info->jited_ksyms);
770 dd.btf = btf;
771 dd.func_info = func_info;
772 dd.finfo_rec_size = info->func_info_rec_size;
773 dd.prog_linfo = prog_linfo;
774
775 if (json_output)
776 dump_xlated_json(&dd, buf, member_len, opcodes,
777 linum);
778 else
779 dump_xlated_plain(&dd, buf, member_len, opcodes,
780 linum);
781 kernel_syms_destroy(&dd);
782 }
783
784 btf__free(btf);
785
786 return 0;
787}
788
789static int do_dump(int argc, char **argv)
790{
791 struct bpf_prog_info_linear *info_linear;
792 char *filepath = NULL;
793 bool opcodes = false;
794 bool visual = false;
795 enum dump_mode mode;
796 bool linum = false;
797 int *fds = NULL;
798 int nb_fds, i = 0;
799 int err = -1;
800 __u64 arrays;
801
802 if (is_prefix(*argv, "jited")) {
803 if (disasm_init())
804 return -1;
805 mode = DUMP_JITED;
806 } else if (is_prefix(*argv, "xlated")) {
807 mode = DUMP_XLATED;
808 } else {
809 p_err("expected 'xlated' or 'jited', got: %s", *argv);
810 return -1;
811 }
812 NEXT_ARG();
813
814 if (argc < 2)
815 usage();
816
817 fds = malloc(sizeof(int));
818 if (!fds) {
819 p_err("mem alloc failed");
820 return -1;
821 }
822 nb_fds = prog_parse_fds(&argc, &argv, &fds);
823 if (nb_fds < 1)
824 goto exit_free;
825
826 if (is_prefix(*argv, "file")) {
827 NEXT_ARG();
828 if (!argc) {
829 p_err("expected file path");
830 goto exit_close;
831 }
832 if (nb_fds > 1) {
833 p_err("several programs matched");
834 goto exit_close;
835 }
836
837 filepath = *argv;
838 NEXT_ARG();
839 } else if (is_prefix(*argv, "opcodes")) {
840 opcodes = true;
841 NEXT_ARG();
842 } else if (is_prefix(*argv, "visual")) {
843 if (nb_fds > 1) {
844 p_err("several programs matched");
845 goto exit_close;
846 }
847
848 visual = true;
849 NEXT_ARG();
850 } else if (is_prefix(*argv, "linum")) {
851 linum = true;
852 NEXT_ARG();
853 }
854
855 if (argc) {
856 usage();
857 goto exit_close;
858 }
859
860 if (mode == DUMP_JITED)
861 arrays = 1UL << BPF_PROG_INFO_JITED_INSNS;
862 else
863 arrays = 1UL << BPF_PROG_INFO_XLATED_INSNS;
864
865 arrays |= 1UL << BPF_PROG_INFO_JITED_KSYMS;
866 arrays |= 1UL << BPF_PROG_INFO_JITED_FUNC_LENS;
867 arrays |= 1UL << BPF_PROG_INFO_FUNC_INFO;
868 arrays |= 1UL << BPF_PROG_INFO_LINE_INFO;
869 arrays |= 1UL << BPF_PROG_INFO_JITED_LINE_INFO;
870
871 if (json_output && nb_fds > 1)
872 jsonw_start_array(json_wtr); /* root array */
873 for (i = 0; i < nb_fds; i++) {
874 info_linear = bpf_program__get_prog_info_linear(fds[i], arrays);
875 if (IS_ERR_OR_NULL(info_linear)) {
876 p_err("can't get prog info: %s", strerror(errno));
877 break;
878 }
879
880 if (json_output && nb_fds > 1) {
881 jsonw_start_object(json_wtr); /* prog object */
882 print_prog_header_json(&info_linear->info);
883 jsonw_name(json_wtr, "insns");
884 } else if (nb_fds > 1) {
885 print_prog_header_plain(&info_linear->info);
886 }
887
888 err = prog_dump(&info_linear->info, mode, filepath, opcodes,
889 visual, linum);
890
891 if (json_output && nb_fds > 1)
892 jsonw_end_object(json_wtr); /* prog object */
893 else if (i != nb_fds - 1 && nb_fds > 1)
894 printf("\n");
895
896 free(info_linear);
897 if (err)
898 break;
899 close(fds[i]);
900 }
901 if (json_output && nb_fds > 1)
902 jsonw_end_array(json_wtr); /* root array */
903
904exit_close:
905 for (; i < nb_fds; i++)
906 close(fds[i]);
907exit_free:
908 free(fds);
909 return err;
910}
911
912static int do_pin(int argc, char **argv)
913{
914 int err;
915
916 err = do_pin_any(argc, argv, prog_parse_fd);
917 if (!err && json_output)
918 jsonw_null(json_wtr);
919 return err;
920}
921
922struct map_replace {
923 int idx;
924 int fd;
925 char *name;
926};
927
928static int map_replace_compar(const void *p1, const void *p2)
929{
930 const struct map_replace *a = p1, *b = p2;
931
932 return a->idx - b->idx;
933}
934
935static int parse_attach_detach_args(int argc, char **argv, int *progfd,
936 enum bpf_attach_type *attach_type,
937 int *mapfd)
938{
939 if (!REQ_ARGS(3))
940 return -EINVAL;
941
942 *progfd = prog_parse_fd(&argc, &argv);
943 if (*progfd < 0)
944 return *progfd;
945
946 *attach_type = parse_attach_type(*argv);
947 if (*attach_type == __MAX_BPF_ATTACH_TYPE) {
948 p_err("invalid attach/detach type");
949 return -EINVAL;
950 }
951
952 if (*attach_type == BPF_FLOW_DISSECTOR) {
953 *mapfd = 0;
954 return 0;
955 }
956
957 NEXT_ARG();
958 if (!REQ_ARGS(2))
959 return -EINVAL;
960
961 *mapfd = map_parse_fd(&argc, &argv);
962 if (*mapfd < 0)
963 return *mapfd;
964
965 return 0;
966}
967
968static int do_attach(int argc, char **argv)
969{
970 enum bpf_attach_type attach_type;
971 int err, progfd;
972 int mapfd;
973
974 err = parse_attach_detach_args(argc, argv,
975 &progfd, &attach_type, &mapfd);
976 if (err)
977 return err;
978
979 err = bpf_prog_attach(progfd, mapfd, attach_type, 0);
980 if (err) {
981 p_err("failed prog attach to map");
982 return -EINVAL;
983 }
984
985 if (json_output)
986 jsonw_null(json_wtr);
987 return 0;
988}
989
990static int do_detach(int argc, char **argv)
991{
992 enum bpf_attach_type attach_type;
993 int err, progfd;
994 int mapfd;
995
996 err = parse_attach_detach_args(argc, argv,
997 &progfd, &attach_type, &mapfd);
998 if (err)
999 return err;
1000
1001 err = bpf_prog_detach2(progfd, mapfd, attach_type);
1002 if (err) {
1003 p_err("failed prog detach from map");
1004 return -EINVAL;
1005 }
1006
1007 if (json_output)
1008 jsonw_null(json_wtr);
1009 return 0;
1010}
1011
1012static int check_single_stdin(char *file_data_in, char *file_ctx_in)
1013{
1014 if (file_data_in && file_ctx_in &&
1015 !strcmp(file_data_in, "-") && !strcmp(file_ctx_in, "-")) {
1016 p_err("cannot use standard input for both data_in and ctx_in");
1017 return -1;
1018 }
1019
1020 return 0;
1021}
1022
1023static int get_run_data(const char *fname, void **data_ptr, unsigned int *size)
1024{
1025 size_t block_size = 256;
1026 size_t buf_size = block_size;
1027 size_t nb_read = 0;
1028 void *tmp;
1029 FILE *f;
1030
1031 if (!fname) {
1032 *data_ptr = NULL;
1033 *size = 0;
1034 return 0;
1035 }
1036
1037 if (!strcmp(fname, "-"))
1038 f = stdin;
1039 else
1040 f = fopen(fname, "r");
1041 if (!f) {
1042 p_err("failed to open %s: %s", fname, strerror(errno));
1043 return -1;
1044 }
1045
1046 *data_ptr = malloc(block_size);
1047 if (!*data_ptr) {
1048 p_err("failed to allocate memory for data_in/ctx_in: %s",
1049 strerror(errno));
1050 goto err_fclose;
1051 }
1052
1053 while ((nb_read += fread(*data_ptr + nb_read, 1, block_size, f))) {
1054 if (feof(f))
1055 break;
1056 if (ferror(f)) {
1057 p_err("failed to read data_in/ctx_in from %s: %s",
1058 fname, strerror(errno));
1059 goto err_free;
1060 }
1061 if (nb_read > buf_size - block_size) {
1062 if (buf_size == UINT32_MAX) {
1063 p_err("data_in/ctx_in is too long (max: %d)",
1064 UINT32_MAX);
1065 goto err_free;
1066 }
1067 /* No space for fread()-ing next chunk; realloc() */
1068 buf_size *= 2;
1069 tmp = realloc(*data_ptr, buf_size);
1070 if (!tmp) {
1071 p_err("failed to reallocate data_in/ctx_in: %s",
1072 strerror(errno));
1073 goto err_free;
1074 }
1075 *data_ptr = tmp;
1076 }
1077 }
1078 if (f != stdin)
1079 fclose(f);
1080
1081 *size = nb_read;
1082 return 0;
1083
1084err_free:
1085 free(*data_ptr);
1086 *data_ptr = NULL;
1087err_fclose:
1088 if (f != stdin)
1089 fclose(f);
1090 return -1;
1091}
1092
1093static void hex_print(void *data, unsigned int size, FILE *f)
1094{
1095 size_t i, j;
1096 char c;
1097
1098 for (i = 0; i < size; i += 16) {
1099 /* Row offset */
1100 fprintf(f, "%07zx\t", i);
1101
1102 /* Hexadecimal values */
1103 for (j = i; j < i + 16 && j < size; j++)
1104 fprintf(f, "%02x%s", *(uint8_t *)(data + j),
1105 j % 2 ? " " : "");
1106 for (; j < i + 16; j++)
1107 fprintf(f, " %s", j % 2 ? " " : "");
1108
1109 /* ASCII values (if relevant), '.' otherwise */
1110 fprintf(f, "| ");
1111 for (j = i; j < i + 16 && j < size; j++) {
1112 c = *(char *)(data + j);
1113 if (c < ' ' || c > '~')
1114 c = '.';
1115 fprintf(f, "%c%s", c, j == i + 7 ? " " : "");
1116 }
1117
1118 fprintf(f, "\n");
1119 }
1120}
1121
1122static int
1123print_run_output(void *data, unsigned int size, const char *fname,
1124 const char *json_key)
1125{
1126 size_t nb_written;
1127 FILE *f;
1128
1129 if (!fname)
1130 return 0;
1131
1132 if (!strcmp(fname, "-")) {
1133 f = stdout;
1134 if (json_output) {
1135 jsonw_name(json_wtr, json_key);
1136 print_data_json(data, size);
1137 } else {
1138 hex_print(data, size, f);
1139 }
1140 return 0;
1141 }
1142
1143 f = fopen(fname, "w");
1144 if (!f) {
1145 p_err("failed to open %s: %s", fname, strerror(errno));
1146 return -1;
1147 }
1148
1149 nb_written = fwrite(data, 1, size, f);
1150 fclose(f);
1151 if (nb_written != size) {
1152 p_err("failed to write output data/ctx: %s", strerror(errno));
1153 return -1;
1154 }
1155
1156 return 0;
1157}
1158
1159static int alloc_run_data(void **data_ptr, unsigned int size_out)
1160{
1161 *data_ptr = calloc(size_out, 1);
1162 if (!*data_ptr) {
1163 p_err("failed to allocate memory for output data/ctx: %s",
1164 strerror(errno));
1165 return -1;
1166 }
1167
1168 return 0;
1169}
1170
1171static int do_run(int argc, char **argv)
1172{
1173 char *data_fname_in = NULL, *data_fname_out = NULL;
1174 char *ctx_fname_in = NULL, *ctx_fname_out = NULL;
1175 struct bpf_prog_test_run_attr test_attr = {0};
1176 const unsigned int default_size = SZ_32K;
1177 void *data_in = NULL, *data_out = NULL;
1178 void *ctx_in = NULL, *ctx_out = NULL;
1179 unsigned int repeat = 1;
1180 int fd, err;
1181
1182 if (!REQ_ARGS(4))
1183 return -1;
1184
1185 fd = prog_parse_fd(&argc, &argv);
1186 if (fd < 0)
1187 return -1;
1188
1189 while (argc) {
1190 if (detect_common_prefix(*argv, "data_in", "data_out",
1191 "data_size_out", NULL))
1192 return -1;
1193 if (detect_common_prefix(*argv, "ctx_in", "ctx_out",
1194 "ctx_size_out", NULL))
1195 return -1;
1196
1197 if (is_prefix(*argv, "data_in")) {
1198 NEXT_ARG();
1199 if (!REQ_ARGS(1))
1200 return -1;
1201
1202 data_fname_in = GET_ARG();
1203 if (check_single_stdin(data_fname_in, ctx_fname_in))
1204 return -1;
1205 } else if (is_prefix(*argv, "data_out")) {
1206 NEXT_ARG();
1207 if (!REQ_ARGS(1))
1208 return -1;
1209
1210 data_fname_out = GET_ARG();
1211 } else if (is_prefix(*argv, "data_size_out")) {
1212 char *endptr;
1213
1214 NEXT_ARG();
1215 if (!REQ_ARGS(1))
1216 return -1;
1217
1218 test_attr.data_size_out = strtoul(*argv, &endptr, 0);
1219 if (*endptr) {
1220 p_err("can't parse %s as output data size",
1221 *argv);
1222 return -1;
1223 }
1224 NEXT_ARG();
1225 } else if (is_prefix(*argv, "ctx_in")) {
1226 NEXT_ARG();
1227 if (!REQ_ARGS(1))
1228 return -1;
1229
1230 ctx_fname_in = GET_ARG();
1231 if (check_single_stdin(data_fname_in, ctx_fname_in))
1232 return -1;
1233 } else if (is_prefix(*argv, "ctx_out")) {
1234 NEXT_ARG();
1235 if (!REQ_ARGS(1))
1236 return -1;
1237
1238 ctx_fname_out = GET_ARG();
1239 } else if (is_prefix(*argv, "ctx_size_out")) {
1240 char *endptr;
1241
1242 NEXT_ARG();
1243 if (!REQ_ARGS(1))
1244 return -1;
1245
1246 test_attr.ctx_size_out = strtoul(*argv, &endptr, 0);
1247 if (*endptr) {
1248 p_err("can't parse %s as output context size",
1249 *argv);
1250 return -1;
1251 }
1252 NEXT_ARG();
1253 } else if (is_prefix(*argv, "repeat")) {
1254 char *endptr;
1255
1256 NEXT_ARG();
1257 if (!REQ_ARGS(1))
1258 return -1;
1259
1260 repeat = strtoul(*argv, &endptr, 0);
1261 if (*endptr) {
1262 p_err("can't parse %s as repeat number",
1263 *argv);
1264 return -1;
1265 }
1266 NEXT_ARG();
1267 } else {
1268 p_err("expected no more arguments, 'data_in', 'data_out', 'data_size_out', 'ctx_in', 'ctx_out', 'ctx_size_out' or 'repeat', got: '%s'?",
1269 *argv);
1270 return -1;
1271 }
1272 }
1273
1274 err = get_run_data(data_fname_in, &data_in, &test_attr.data_size_in);
1275 if (err)
1276 return -1;
1277
1278 if (data_in) {
1279 if (!test_attr.data_size_out)
1280 test_attr.data_size_out = default_size;
1281 err = alloc_run_data(&data_out, test_attr.data_size_out);
1282 if (err)
1283 goto free_data_in;
1284 }
1285
1286 err = get_run_data(ctx_fname_in, &ctx_in, &test_attr.ctx_size_in);
1287 if (err)
1288 goto free_data_out;
1289
1290 if (ctx_in) {
1291 if (!test_attr.ctx_size_out)
1292 test_attr.ctx_size_out = default_size;
1293 err = alloc_run_data(&ctx_out, test_attr.ctx_size_out);
1294 if (err)
1295 goto free_ctx_in;
1296 }
1297
1298 test_attr.prog_fd = fd;
1299 test_attr.repeat = repeat;
1300 test_attr.data_in = data_in;
1301 test_attr.data_out = data_out;
1302 test_attr.ctx_in = ctx_in;
1303 test_attr.ctx_out = ctx_out;
1304
1305 err = bpf_prog_test_run_xattr(&test_attr);
1306 if (err) {
1307 p_err("failed to run program: %s", strerror(errno));
1308 goto free_ctx_out;
1309 }
1310
1311 err = 0;
1312
1313 if (json_output)
1314 jsonw_start_object(json_wtr); /* root */
1315
1316 /* Do not exit on errors occurring when printing output data/context,
1317 * we still want to print return value and duration for program run.
1318 */
1319 if (test_attr.data_size_out)
1320 err += print_run_output(test_attr.data_out,
1321 test_attr.data_size_out,
1322 data_fname_out, "data_out");
1323 if (test_attr.ctx_size_out)
1324 err += print_run_output(test_attr.ctx_out,
1325 test_attr.ctx_size_out,
1326 ctx_fname_out, "ctx_out");
1327
1328 if (json_output) {
1329 jsonw_uint_field(json_wtr, "retval", test_attr.retval);
1330 jsonw_uint_field(json_wtr, "duration", test_attr.duration);
1331 jsonw_end_object(json_wtr); /* root */
1332 } else {
1333 fprintf(stdout, "Return value: %u, duration%s: %uns\n",
1334 test_attr.retval,
1335 repeat > 1 ? " (average)" : "", test_attr.duration);
1336 }
1337
1338free_ctx_out:
1339 free(ctx_out);
1340free_ctx_in:
1341 free(ctx_in);
1342free_data_out:
1343 free(data_out);
1344free_data_in:
1345 free(data_in);
1346
1347 return err;
1348}
1349
1350static int
1351get_prog_type_by_name(const char *name, enum bpf_prog_type *prog_type,
1352 enum bpf_attach_type *expected_attach_type)
1353{
1354 libbpf_print_fn_t print_backup;
1355 int ret;
1356
1357 ret = libbpf_prog_type_by_name(name, prog_type, expected_attach_type);
1358 if (!ret)
1359 return ret;
1360
1361 /* libbpf_prog_type_by_name() failed, let's re-run with debug level */
1362 print_backup = libbpf_set_print(print_all_levels);
1363 ret = libbpf_prog_type_by_name(name, prog_type, expected_attach_type);
1364 libbpf_set_print(print_backup);
1365
1366 return ret;
1367}
1368
1369static int load_with_options(int argc, char **argv, bool first_prog_only)
1370{
1371 enum bpf_prog_type common_prog_type = BPF_PROG_TYPE_UNSPEC;
1372 DECLARE_LIBBPF_OPTS(bpf_object_open_opts, open_opts,
1373 .relaxed_maps = relaxed_maps,
1374 );
1375 struct bpf_object_load_attr load_attr = { 0 };
1376 enum bpf_attach_type expected_attach_type;
1377 struct map_replace *map_replace = NULL;
1378 struct bpf_program *prog = NULL, *pos;
1379 unsigned int old_map_fds = 0;
1380 const char *pinmaps = NULL;
1381 struct bpf_object *obj;
1382 struct bpf_map *map;
1383 const char *pinfile;
1384 unsigned int i, j;
1385 __u32 ifindex = 0;
1386 const char *file;
1387 int idx, err;
1388
1389
1390 if (!REQ_ARGS(2))
1391 return -1;
1392 file = GET_ARG();
1393 pinfile = GET_ARG();
1394
1395 while (argc) {
1396 if (is_prefix(*argv, "type")) {
1397 char *type;
1398
1399 NEXT_ARG();
1400
1401 if (common_prog_type != BPF_PROG_TYPE_UNSPEC) {
1402 p_err("program type already specified");
1403 goto err_free_reuse_maps;
1404 }
1405 if (!REQ_ARGS(1))
1406 goto err_free_reuse_maps;
1407
1408 /* Put a '/' at the end of type to appease libbpf */
1409 type = malloc(strlen(*argv) + 2);
1410 if (!type) {
1411 p_err("mem alloc failed");
1412 goto err_free_reuse_maps;
1413 }
1414 *type = 0;
1415 strcat(type, *argv);
1416 strcat(type, "/");
1417
1418 err = get_prog_type_by_name(type, &common_prog_type,
1419 &expected_attach_type);
1420 free(type);
1421 if (err < 0)
1422 goto err_free_reuse_maps;
1423
1424 NEXT_ARG();
1425 } else if (is_prefix(*argv, "map")) {
1426 void *new_map_replace;
1427 char *endptr, *name;
1428 int fd;
1429
1430 NEXT_ARG();
1431
1432 if (!REQ_ARGS(4))
1433 goto err_free_reuse_maps;
1434
1435 if (is_prefix(*argv, "idx")) {
1436 NEXT_ARG();
1437
1438 idx = strtoul(*argv, &endptr, 0);
1439 if (*endptr) {
1440 p_err("can't parse %s as IDX", *argv);
1441 goto err_free_reuse_maps;
1442 }
1443 name = NULL;
1444 } else if (is_prefix(*argv, "name")) {
1445 NEXT_ARG();
1446
1447 name = *argv;
1448 idx = -1;
1449 } else {
1450 p_err("expected 'idx' or 'name', got: '%s'?",
1451 *argv);
1452 goto err_free_reuse_maps;
1453 }
1454 NEXT_ARG();
1455
1456 fd = map_parse_fd(&argc, &argv);
1457 if (fd < 0)
1458 goto err_free_reuse_maps;
1459
1460 new_map_replace = reallocarray(map_replace,
1461 old_map_fds + 1,
1462 sizeof(*map_replace));
1463 if (!new_map_replace) {
1464 p_err("mem alloc failed");
1465 goto err_free_reuse_maps;
1466 }
1467 map_replace = new_map_replace;
1468
1469 map_replace[old_map_fds].idx = idx;
1470 map_replace[old_map_fds].name = name;
1471 map_replace[old_map_fds].fd = fd;
1472 old_map_fds++;
1473 } else if (is_prefix(*argv, "dev")) {
1474 NEXT_ARG();
1475
1476 if (ifindex) {
1477 p_err("offload device already specified");
1478 goto err_free_reuse_maps;
1479 }
1480 if (!REQ_ARGS(1))
1481 goto err_free_reuse_maps;
1482
1483 ifindex = if_nametoindex(*argv);
1484 if (!ifindex) {
1485 p_err("unrecognized netdevice '%s': %s",
1486 *argv, strerror(errno));
1487 goto err_free_reuse_maps;
1488 }
1489 NEXT_ARG();
1490 } else if (is_prefix(*argv, "pinmaps")) {
1491 NEXT_ARG();
1492
1493 if (!REQ_ARGS(1))
1494 goto err_free_reuse_maps;
1495
1496 pinmaps = GET_ARG();
1497 } else {
1498 p_err("expected no more arguments, 'type', 'map' or 'dev', got: '%s'?",
1499 *argv);
1500 goto err_free_reuse_maps;
1501 }
1502 }
1503
1504 set_max_rlimit();
1505
1506 obj = bpf_object__open_file(file, &open_opts);
1507 if (libbpf_get_error(obj)) {
1508 p_err("failed to open object file");
1509 goto err_free_reuse_maps;
1510 }
1511
1512 bpf_object__for_each_program(pos, obj) {
1513 enum bpf_prog_type prog_type = common_prog_type;
1514
1515 if (prog_type == BPF_PROG_TYPE_UNSPEC) {
1516 const char *sec_name = bpf_program__section_name(pos);
1517
1518 err = get_prog_type_by_name(sec_name, &prog_type,
1519 &expected_attach_type);
1520 if (err < 0)
1521 goto err_close_obj;
1522 }
1523
1524 bpf_program__set_ifindex(pos, ifindex);
1525 bpf_program__set_type(pos, prog_type);
1526 bpf_program__set_expected_attach_type(pos, expected_attach_type);
1527 }
1528
1529 qsort(map_replace, old_map_fds, sizeof(*map_replace),
1530 map_replace_compar);
1531
1532 /* After the sort maps by name will be first on the list, because they
1533 * have idx == -1. Resolve them.
1534 */
1535 j = 0;
1536 while (j < old_map_fds && map_replace[j].name) {
1537 i = 0;
1538 bpf_object__for_each_map(map, obj) {
1539 if (!strcmp(bpf_map__name(map), map_replace[j].name)) {
1540 map_replace[j].idx = i;
1541 break;
1542 }
1543 i++;
1544 }
1545 if (map_replace[j].idx == -1) {
1546 p_err("unable to find map '%s'", map_replace[j].name);
1547 goto err_close_obj;
1548 }
1549 j++;
1550 }
1551 /* Resort if any names were resolved */
1552 if (j)
1553 qsort(map_replace, old_map_fds, sizeof(*map_replace),
1554 map_replace_compar);
1555
1556 /* Set ifindex and name reuse */
1557 j = 0;
1558 idx = 0;
1559 bpf_object__for_each_map(map, obj) {
1560 if (!bpf_map__is_offload_neutral(map))
1561 bpf_map__set_ifindex(map, ifindex);
1562
1563 if (j < old_map_fds && idx == map_replace[j].idx) {
1564 err = bpf_map__reuse_fd(map, map_replace[j++].fd);
1565 if (err) {
1566 p_err("unable to set up map reuse: %d", err);
1567 goto err_close_obj;
1568 }
1569
1570 /* Next reuse wants to apply to the same map */
1571 if (j < old_map_fds && map_replace[j].idx == idx) {
1572 p_err("replacement for map idx %d specified more than once",
1573 idx);
1574 goto err_close_obj;
1575 }
1576 }
1577
1578 idx++;
1579 }
1580 if (j < old_map_fds) {
1581 p_err("map idx '%d' not used", map_replace[j].idx);
1582 goto err_close_obj;
1583 }
1584
1585 load_attr.obj = obj;
1586 if (verifier_logs)
1587 /* log_level1 + log_level2 + stats, but not stable UAPI */
1588 load_attr.log_level = 1 + 2 + 4;
1589
1590 err = bpf_object__load_xattr(&load_attr);
1591 if (err) {
1592 p_err("failed to load object file");
1593 goto err_close_obj;
1594 }
1595
1596 err = mount_bpffs_for_pin(pinfile);
1597 if (err)
1598 goto err_close_obj;
1599
1600 if (first_prog_only) {
1601 prog = bpf_program__next(NULL, obj);
1602 if (!prog) {
1603 p_err("object file doesn't contain any bpf program");
1604 goto err_close_obj;
1605 }
1606
1607 err = bpf_obj_pin(bpf_program__fd(prog), pinfile);
1608 if (err) {
1609 p_err("failed to pin program %s",
1610 bpf_program__section_name(prog));
1611 goto err_close_obj;
1612 }
1613 } else {
1614 err = bpf_object__pin_programs(obj, pinfile);
1615 if (err) {
1616 p_err("failed to pin all programs");
1617 goto err_close_obj;
1618 }
1619 }
1620
1621 if (pinmaps) {
1622 err = bpf_object__pin_maps(obj, pinmaps);
1623 if (err) {
1624 p_err("failed to pin all maps");
1625 goto err_unpin;
1626 }
1627 }
1628
1629 if (json_output)
1630 jsonw_null(json_wtr);
1631
1632 bpf_object__close(obj);
1633 for (i = 0; i < old_map_fds; i++)
1634 close(map_replace[i].fd);
1635 free(map_replace);
1636
1637 return 0;
1638
1639err_unpin:
1640 if (first_prog_only)
1641 unlink(pinfile);
1642 else
1643 bpf_object__unpin_programs(obj, pinfile);
1644err_close_obj:
1645 bpf_object__close(obj);
1646err_free_reuse_maps:
1647 for (i = 0; i < old_map_fds; i++)
1648 close(map_replace[i].fd);
1649 free(map_replace);
1650 return -1;
1651}
1652
1653static int count_open_fds(void)
1654{
1655 DIR *dp = opendir("/proc/self/fd");
1656 struct dirent *de;
1657 int cnt = -3;
1658
1659 if (!dp)
1660 return -1;
1661
1662 while ((de = readdir(dp)))
1663 cnt++;
1664
1665 closedir(dp);
1666 return cnt;
1667}
1668
1669static int try_loader(struct gen_loader_opts *gen)
1670{
1671 struct bpf_load_and_run_opts opts = {};
1672 struct bpf_loader_ctx *ctx;
1673 int ctx_sz = sizeof(*ctx) + 64 * max(sizeof(struct bpf_map_desc),
1674 sizeof(struct bpf_prog_desc));
1675 int log_buf_sz = (1u << 24) - 1;
1676 int err, fds_before, fd_delta;
1677 char *log_buf;
1678
1679 ctx = alloca(ctx_sz);
1680 memset(ctx, 0, ctx_sz);
1681 ctx->sz = ctx_sz;
1682 ctx->log_level = 1;
1683 ctx->log_size = log_buf_sz;
1684 log_buf = malloc(log_buf_sz);
1685 if (!log_buf)
1686 return -ENOMEM;
1687 ctx->log_buf = (long) log_buf;
1688 opts.ctx = ctx;
1689 opts.data = gen->data;
1690 opts.data_sz = gen->data_sz;
1691 opts.insns = gen->insns;
1692 opts.insns_sz = gen->insns_sz;
1693 fds_before = count_open_fds();
1694 err = bpf_load_and_run(&opts);
1695 fd_delta = count_open_fds() - fds_before;
1696 if (err < 0) {
1697 fprintf(stderr, "err %d\n%s\n%s", err, opts.errstr, log_buf);
1698 if (fd_delta)
1699 fprintf(stderr, "loader prog leaked %d FDs\n",
1700 fd_delta);
1701 }
1702 free(log_buf);
1703 return err;
1704}
1705
1706static int do_loader(int argc, char **argv)
1707{
1708 DECLARE_LIBBPF_OPTS(bpf_object_open_opts, open_opts);
1709 DECLARE_LIBBPF_OPTS(gen_loader_opts, gen);
1710 struct bpf_object_load_attr load_attr = {};
1711 struct bpf_object *obj;
1712 const char *file;
1713 int err = 0;
1714
1715 if (!REQ_ARGS(1))
1716 return -1;
1717 file = GET_ARG();
1718
1719 obj = bpf_object__open_file(file, &open_opts);
1720 if (libbpf_get_error(obj)) {
1721 p_err("failed to open object file");
1722 goto err_close_obj;
1723 }
1724
1725 err = bpf_object__gen_loader(obj, &gen);
1726 if (err)
1727 goto err_close_obj;
1728
1729 load_attr.obj = obj;
1730 if (verifier_logs)
1731 /* log_level1 + log_level2 + stats, but not stable UAPI */
1732 load_attr.log_level = 1 + 2 + 4;
1733
1734 err = bpf_object__load_xattr(&load_attr);
1735 if (err) {
1736 p_err("failed to load object file");
1737 goto err_close_obj;
1738 }
1739
1740 if (verifier_logs) {
1741 struct dump_data dd = {};
1742
1743 kernel_syms_load(&dd);
1744 dump_xlated_plain(&dd, (void *)gen.insns, gen.insns_sz, false, false);
1745 kernel_syms_destroy(&dd);
1746 }
1747 err = try_loader(&gen);
1748err_close_obj:
1749 bpf_object__close(obj);
1750 return err;
1751}
1752
1753static int do_load(int argc, char **argv)
1754{
1755 if (use_loader)
1756 return do_loader(argc, argv);
1757 return load_with_options(argc, argv, true);
1758}
1759
1760static int do_loadall(int argc, char **argv)
1761{
1762 return load_with_options(argc, argv, false);
1763}
1764
1765#ifdef BPFTOOL_WITHOUT_SKELETONS
1766
1767static int do_profile(int argc, char **argv)
1768{
1769 p_err("bpftool prog profile command is not supported. Please build bpftool with clang >= 10.0.0");
1770 return 0;
1771}
1772
1773#else /* BPFTOOL_WITHOUT_SKELETONS */
1774
1775#include "profiler.skel.h"
1776
1777struct profile_metric {
1778 const char *name;
1779 struct bpf_perf_event_value val;
1780 struct perf_event_attr attr;
1781 bool selected;
1782
1783 /* calculate ratios like instructions per cycle */
1784 const int ratio_metric; /* 0 for N/A, 1 for index 0 (cycles) */
1785 const char *ratio_desc;
1786 const float ratio_mul;
1787} metrics[] = {
1788 {
1789 .name = "cycles",
1790 .attr = {
1791 .type = PERF_TYPE_HARDWARE,
1792 .config = PERF_COUNT_HW_CPU_CYCLES,
1793 .exclude_user = 1,
1794 },
1795 },
1796 {
1797 .name = "instructions",
1798 .attr = {
1799 .type = PERF_TYPE_HARDWARE,
1800 .config = PERF_COUNT_HW_INSTRUCTIONS,
1801 .exclude_user = 1,
1802 },
1803 .ratio_metric = 1,
1804 .ratio_desc = "insns per cycle",
1805 .ratio_mul = 1.0,
1806 },
1807 {
1808 .name = "l1d_loads",
1809 .attr = {
1810 .type = PERF_TYPE_HW_CACHE,
1811 .config =
1812 PERF_COUNT_HW_CACHE_L1D |
1813 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1814 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16),
1815 .exclude_user = 1,
1816 },
1817 },
1818 {
1819 .name = "llc_misses",
1820 .attr = {
1821 .type = PERF_TYPE_HW_CACHE,
1822 .config =
1823 PERF_COUNT_HW_CACHE_LL |
1824 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1825 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16),
1826 .exclude_user = 1
1827 },
1828 .ratio_metric = 2,
1829 .ratio_desc = "LLC misses per million insns",
1830 .ratio_mul = 1e6,
1831 },
1832 {
1833 .name = "itlb_misses",
1834 .attr = {
1835 .type = PERF_TYPE_HW_CACHE,
1836 .config =
1837 PERF_COUNT_HW_CACHE_ITLB |
1838 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1839 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16),
1840 .exclude_user = 1
1841 },
1842 .ratio_metric = 2,
1843 .ratio_desc = "itlb misses per million insns",
1844 .ratio_mul = 1e6,
1845 },
1846 {
1847 .name = "dtlb_misses",
1848 .attr = {
1849 .type = PERF_TYPE_HW_CACHE,
1850 .config =
1851 PERF_COUNT_HW_CACHE_DTLB |
1852 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1853 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16),
1854 .exclude_user = 1
1855 },
1856 .ratio_metric = 2,
1857 .ratio_desc = "dtlb misses per million insns",
1858 .ratio_mul = 1e6,
1859 },
1860};
1861
1862static __u64 profile_total_count;
1863
1864#define MAX_NUM_PROFILE_METRICS 4
1865
1866static int profile_parse_metrics(int argc, char **argv)
1867{
1868 unsigned int metric_cnt;
1869 int selected_cnt = 0;
1870 unsigned int i;
1871
1872 metric_cnt = sizeof(metrics) / sizeof(struct profile_metric);
1873
1874 while (argc > 0) {
1875 for (i = 0; i < metric_cnt; i++) {
1876 if (is_prefix(argv[0], metrics[i].name)) {
1877 if (!metrics[i].selected)
1878 selected_cnt++;
1879 metrics[i].selected = true;
1880 break;
1881 }
1882 }
1883 if (i == metric_cnt) {
1884 p_err("unknown metric %s", argv[0]);
1885 return -1;
1886 }
1887 NEXT_ARG();
1888 }
1889 if (selected_cnt > MAX_NUM_PROFILE_METRICS) {
1890 p_err("too many (%d) metrics, please specify no more than %d metrics at at time",
1891 selected_cnt, MAX_NUM_PROFILE_METRICS);
1892 return -1;
1893 }
1894 return selected_cnt;
1895}
1896
1897static void profile_read_values(struct profiler_bpf *obj)
1898{
1899 __u32 m, cpu, num_cpu = obj->rodata->num_cpu;
1900 int reading_map_fd, count_map_fd;
1901 __u64 counts[num_cpu];
1902 __u32 key = 0;
1903 int err;
1904
1905 reading_map_fd = bpf_map__fd(obj->maps.accum_readings);
1906 count_map_fd = bpf_map__fd(obj->maps.counts);
1907 if (reading_map_fd < 0 || count_map_fd < 0) {
1908 p_err("failed to get fd for map");
1909 return;
1910 }
1911
1912 err = bpf_map_lookup_elem(count_map_fd, &key, counts);
1913 if (err) {
1914 p_err("failed to read count_map: %s", strerror(errno));
1915 return;
1916 }
1917
1918 profile_total_count = 0;
1919 for (cpu = 0; cpu < num_cpu; cpu++)
1920 profile_total_count += counts[cpu];
1921
1922 for (m = 0; m < ARRAY_SIZE(metrics); m++) {
1923 struct bpf_perf_event_value values[num_cpu];
1924
1925 if (!metrics[m].selected)
1926 continue;
1927
1928 err = bpf_map_lookup_elem(reading_map_fd, &key, values);
1929 if (err) {
1930 p_err("failed to read reading_map: %s",
1931 strerror(errno));
1932 return;
1933 }
1934 for (cpu = 0; cpu < num_cpu; cpu++) {
1935 metrics[m].val.counter += values[cpu].counter;
1936 metrics[m].val.enabled += values[cpu].enabled;
1937 metrics[m].val.running += values[cpu].running;
1938 }
1939 key++;
1940 }
1941}
1942
1943static void profile_print_readings_json(void)
1944{
1945 __u32 m;
1946
1947 jsonw_start_array(json_wtr);
1948 for (m = 0; m < ARRAY_SIZE(metrics); m++) {
1949 if (!metrics[m].selected)
1950 continue;
1951 jsonw_start_object(json_wtr);
1952 jsonw_string_field(json_wtr, "metric", metrics[m].name);
1953 jsonw_lluint_field(json_wtr, "run_cnt", profile_total_count);
1954 jsonw_lluint_field(json_wtr, "value", metrics[m].val.counter);
1955 jsonw_lluint_field(json_wtr, "enabled", metrics[m].val.enabled);
1956 jsonw_lluint_field(json_wtr, "running", metrics[m].val.running);
1957
1958 jsonw_end_object(json_wtr);
1959 }
1960 jsonw_end_array(json_wtr);
1961}
1962
1963static void profile_print_readings_plain(void)
1964{
1965 __u32 m;
1966
1967 printf("\n%18llu %-20s\n", profile_total_count, "run_cnt");
1968 for (m = 0; m < ARRAY_SIZE(metrics); m++) {
1969 struct bpf_perf_event_value *val = &metrics[m].val;
1970 int r;
1971
1972 if (!metrics[m].selected)
1973 continue;
1974 printf("%18llu %-20s", val->counter, metrics[m].name);
1975
1976 r = metrics[m].ratio_metric - 1;
1977 if (r >= 0 && metrics[r].selected &&
1978 metrics[r].val.counter > 0) {
1979 printf("# %8.2f %-30s",
1980 val->counter * metrics[m].ratio_mul /
1981 metrics[r].val.counter,
1982 metrics[m].ratio_desc);
1983 } else {
1984 printf("%-41s", "");
1985 }
1986
1987 if (val->enabled > val->running)
1988 printf("(%4.2f%%)",
1989 val->running * 100.0 / val->enabled);
1990 printf("\n");
1991 }
1992}
1993
1994static void profile_print_readings(void)
1995{
1996 if (json_output)
1997 profile_print_readings_json();
1998 else
1999 profile_print_readings_plain();
2000}
2001
2002static char *profile_target_name(int tgt_fd)
2003{
2004 struct bpf_prog_info_linear *info_linear;
2005 struct bpf_func_info *func_info;
2006 const struct btf_type *t;
2007 struct btf *btf = NULL;
2008 char *name = NULL;
2009
2010 info_linear = bpf_program__get_prog_info_linear(
2011 tgt_fd, 1UL << BPF_PROG_INFO_FUNC_INFO);
2012 if (IS_ERR_OR_NULL(info_linear)) {
2013 p_err("failed to get info_linear for prog FD %d", tgt_fd);
2014 return NULL;
2015 }
2016
2017 if (info_linear->info.btf_id == 0 ||
2018 btf__get_from_id(info_linear->info.btf_id, &btf)) {
2019 p_err("prog FD %d doesn't have valid btf", tgt_fd);
2020 goto out;
2021 }
2022
2023 func_info = u64_to_ptr(info_linear->info.func_info);
2024 t = btf__type_by_id(btf, func_info[0].type_id);
2025 if (!t) {
2026 p_err("btf %d doesn't have type %d",
2027 info_linear->info.btf_id, func_info[0].type_id);
2028 goto out;
2029 }
2030 name = strdup(btf__name_by_offset(btf, t->name_off));
2031out:
2032 btf__free(btf);
2033 free(info_linear);
2034 return name;
2035}
2036
2037static struct profiler_bpf *profile_obj;
2038static int profile_tgt_fd = -1;
2039static char *profile_tgt_name;
2040static int *profile_perf_events;
2041static int profile_perf_event_cnt;
2042
2043static void profile_close_perf_events(struct profiler_bpf *obj)
2044{
2045 int i;
2046
2047 for (i = profile_perf_event_cnt - 1; i >= 0; i--)
2048 close(profile_perf_events[i]);
2049
2050 free(profile_perf_events);
2051 profile_perf_event_cnt = 0;
2052}
2053
2054static int profile_open_perf_events(struct profiler_bpf *obj)
2055{
2056 unsigned int cpu, m;
2057 int map_fd, pmu_fd;
2058
2059 profile_perf_events = calloc(
2060 sizeof(int), obj->rodata->num_cpu * obj->rodata->num_metric);
2061 if (!profile_perf_events) {
2062 p_err("failed to allocate memory for perf_event array: %s",
2063 strerror(errno));
2064 return -1;
2065 }
2066 map_fd = bpf_map__fd(obj->maps.events);
2067 if (map_fd < 0) {
2068 p_err("failed to get fd for events map");
2069 return -1;
2070 }
2071
2072 for (m = 0; m < ARRAY_SIZE(metrics); m++) {
2073 if (!metrics[m].selected)
2074 continue;
2075 for (cpu = 0; cpu < obj->rodata->num_cpu; cpu++) {
2076 pmu_fd = syscall(__NR_perf_event_open, &metrics[m].attr,
2077 -1/*pid*/, cpu, -1/*group_fd*/, 0);
2078 if (pmu_fd < 0 ||
2079 bpf_map_update_elem(map_fd, &profile_perf_event_cnt,
2080 &pmu_fd, BPF_ANY) ||
2081 ioctl(pmu_fd, PERF_EVENT_IOC_ENABLE, 0)) {
2082 p_err("failed to create event %s on cpu %d",
2083 metrics[m].name, cpu);
2084 return -1;
2085 }
2086 profile_perf_events[profile_perf_event_cnt++] = pmu_fd;
2087 }
2088 }
2089 return 0;
2090}
2091
2092static void profile_print_and_cleanup(void)
2093{
2094 profile_close_perf_events(profile_obj);
2095 profile_read_values(profile_obj);
2096 profile_print_readings();
2097 profiler_bpf__destroy(profile_obj);
2098
2099 close(profile_tgt_fd);
2100 free(profile_tgt_name);
2101}
2102
2103static void int_exit(int signo)
2104{
2105 profile_print_and_cleanup();
2106 exit(0);
2107}
2108
2109static int do_profile(int argc, char **argv)
2110{
2111 int num_metric, num_cpu, err = -1;
2112 struct bpf_program *prog;
2113 unsigned long duration;
2114 char *endptr;
2115
2116 /* we at least need two args for the prog and one metric */
2117 if (!REQ_ARGS(3))
2118 return -EINVAL;
2119
2120 /* parse target fd */
2121 profile_tgt_fd = prog_parse_fd(&argc, &argv);
2122 if (profile_tgt_fd < 0) {
2123 p_err("failed to parse fd");
2124 return -1;
2125 }
2126
2127 /* parse profiling optional duration */
2128 if (argc > 2 && is_prefix(argv[0], "duration")) {
2129 NEXT_ARG();
2130 duration = strtoul(*argv, &endptr, 0);
2131 if (*endptr)
2132 usage();
2133 NEXT_ARG();
2134 } else {
2135 duration = UINT_MAX;
2136 }
2137
2138 num_metric = profile_parse_metrics(argc, argv);
2139 if (num_metric <= 0)
2140 goto out;
2141
2142 num_cpu = libbpf_num_possible_cpus();
2143 if (num_cpu <= 0) {
2144 p_err("failed to identify number of CPUs");
2145 goto out;
2146 }
2147
2148 profile_obj = profiler_bpf__open();
2149 if (!profile_obj) {
2150 p_err("failed to open and/or load BPF object");
2151 goto out;
2152 }
2153
2154 profile_obj->rodata->num_cpu = num_cpu;
2155 profile_obj->rodata->num_metric = num_metric;
2156
2157 /* adjust map sizes */
2158 bpf_map__resize(profile_obj->maps.events, num_metric * num_cpu);
2159 bpf_map__resize(profile_obj->maps.fentry_readings, num_metric);
2160 bpf_map__resize(profile_obj->maps.accum_readings, num_metric);
2161 bpf_map__resize(profile_obj->maps.counts, 1);
2162
2163 /* change target name */
2164 profile_tgt_name = profile_target_name(profile_tgt_fd);
2165 if (!profile_tgt_name)
2166 goto out;
2167
2168 bpf_object__for_each_program(prog, profile_obj->obj) {
2169 err = bpf_program__set_attach_target(prog, profile_tgt_fd,
2170 profile_tgt_name);
2171 if (err) {
2172 p_err("failed to set attach target\n");
2173 goto out;
2174 }
2175 }
2176
2177 set_max_rlimit();
2178 err = profiler_bpf__load(profile_obj);
2179 if (err) {
2180 p_err("failed to load profile_obj");
2181 goto out;
2182 }
2183
2184 err = profile_open_perf_events(profile_obj);
2185 if (err)
2186 goto out;
2187
2188 err = profiler_bpf__attach(profile_obj);
2189 if (err) {
2190 p_err("failed to attach profile_obj");
2191 goto out;
2192 }
2193 signal(SIGINT, int_exit);
2194
2195 sleep(duration);
2196 profile_print_and_cleanup();
2197 return 0;
2198
2199out:
2200 profile_close_perf_events(profile_obj);
2201 if (profile_obj)
2202 profiler_bpf__destroy(profile_obj);
2203 close(profile_tgt_fd);
2204 free(profile_tgt_name);
2205 return err;
2206}
2207
2208#endif /* BPFTOOL_WITHOUT_SKELETONS */
2209
2210static int do_help(int argc, char **argv)
2211{
2212 if (json_output) {
2213 jsonw_null(json_wtr);
2214 return 0;
2215 }
2216
2217 fprintf(stderr,
2218 "Usage: %1$s %2$s { show | list } [PROG]\n"
2219 " %1$s %2$s dump xlated PROG [{ file FILE | opcodes | visual | linum }]\n"
2220 " %1$s %2$s dump jited PROG [{ file FILE | opcodes | linum }]\n"
2221 " %1$s %2$s pin PROG FILE\n"
2222 " %1$s %2$s { load | loadall } OBJ PATH \\\n"
2223 " [type TYPE] [dev NAME] \\\n"
2224 " [map { idx IDX | name NAME } MAP]\\\n"
2225 " [pinmaps MAP_DIR]\n"
2226 " %1$s %2$s attach PROG ATTACH_TYPE [MAP]\n"
2227 " %1$s %2$s detach PROG ATTACH_TYPE [MAP]\n"
2228 " %1$s %2$s run PROG \\\n"
2229 " data_in FILE \\\n"
2230 " [data_out FILE [data_size_out L]] \\\n"
2231 " [ctx_in FILE [ctx_out FILE [ctx_size_out M]]] \\\n"
2232 " [repeat N]\n"
2233 " %1$s %2$s profile PROG [duration DURATION] METRICs\n"
2234 " %1$s %2$s tracelog\n"
2235 " %1$s %2$s help\n"
2236 "\n"
2237 " " HELP_SPEC_MAP "\n"
2238 " " HELP_SPEC_PROGRAM "\n"
2239 " TYPE := { socket | kprobe | kretprobe | classifier | action |\n"
2240 " tracepoint | raw_tracepoint | xdp | perf_event | cgroup/skb |\n"
2241 " cgroup/sock | cgroup/dev | lwt_in | lwt_out | lwt_xmit |\n"
2242 " lwt_seg6local | sockops | sk_skb | sk_msg | lirc_mode2 |\n"
2243 " sk_reuseport | flow_dissector | cgroup/sysctl |\n"
2244 " cgroup/bind4 | cgroup/bind6 | cgroup/post_bind4 |\n"
2245 " cgroup/post_bind6 | cgroup/connect4 | cgroup/connect6 |\n"
2246 " cgroup/getpeername4 | cgroup/getpeername6 |\n"
2247 " cgroup/getsockname4 | cgroup/getsockname6 | cgroup/sendmsg4 |\n"
2248 " cgroup/sendmsg6 | cgroup/recvmsg4 | cgroup/recvmsg6 |\n"
2249 " cgroup/getsockopt | cgroup/setsockopt | cgroup/sock_release |\n"
2250 " struct_ops | fentry | fexit | freplace | sk_lookup }\n"
2251 " ATTACH_TYPE := { msg_verdict | stream_verdict | stream_parser |\n"
2252 " flow_dissector }\n"
2253 " METRIC := { cycles | instructions | l1d_loads | llc_misses | itlb_misses | dtlb_misses }\n"
2254 " " HELP_SPEC_OPTIONS "\n"
2255 "",
2256 bin_name, argv[-2]);
2257
2258 return 0;
2259}
2260
2261static const struct cmd cmds[] = {
2262 { "show", do_show },
2263 { "list", do_show },
2264 { "help", do_help },
2265 { "dump", do_dump },
2266 { "pin", do_pin },
2267 { "load", do_load },
2268 { "loadall", do_loadall },
2269 { "attach", do_attach },
2270 { "detach", do_detach },
2271 { "tracelog", do_tracelog },
2272 { "run", do_run },
2273 { "profile", do_profile },
2274 { 0 }
2275};
2276
2277int do_prog(int argc, char **argv)
2278{
2279 return cmd_select(cmds, argc, argv, do_help);
2280}