xref: /openbmc/linux/tools/testing/selftests/bpf/test_progs.c (revision c127f98ba9aba1818a6ca3a1da5a24653a10d966)
1 /* Copyright (c) 2017 Facebook
2  *
3  * This program is free software; you can redistribute it and/or
4  * modify it under the terms of version 2 of the GNU General Public
5  * License as published by the Free Software Foundation.
6  */
7 #include <stdio.h>
8 #include <unistd.h>
9 #include <errno.h>
10 #include <string.h>
11 #include <assert.h>
12 #include <stdlib.h>
13 #include <time.h>
14 
15 #include <linux/types.h>
16 typedef __u16 __sum16;
17 #include <arpa/inet.h>
18 #include <linux/if_ether.h>
19 #include <linux/if_packet.h>
20 #include <linux/ip.h>
21 #include <linux/ipv6.h>
22 #include <linux/tcp.h>
23 #include <linux/filter.h>
24 #include <linux/unistd.h>
25 
26 #include <sys/wait.h>
27 #include <sys/resource.h>
28 #include <sys/types.h>
29 #include <fcntl.h>
30 
31 #include <linux/bpf.h>
32 #include <linux/err.h>
33 #include <bpf/bpf.h>
34 #include <bpf/libbpf.h>
35 #include "test_iptunnel_common.h"
36 #include "bpf_util.h"
37 #include "bpf_endian.h"
38 
39 static int error_cnt, pass_cnt;
40 
41 #define MAGIC_BYTES 123
42 
43 /* ipv4 test vector */
44 static struct {
45 	struct ethhdr eth;
46 	struct iphdr iph;
47 	struct tcphdr tcp;
48 } __packed pkt_v4 = {
49 	.eth.h_proto = bpf_htons(ETH_P_IP),
50 	.iph.ihl = 5,
51 	.iph.protocol = 6,
52 	.iph.tot_len = bpf_htons(MAGIC_BYTES),
53 	.tcp.urg_ptr = 123,
54 };
55 
56 /* ipv6 test vector */
57 static struct {
58 	struct ethhdr eth;
59 	struct ipv6hdr iph;
60 	struct tcphdr tcp;
61 } __packed pkt_v6 = {
62 	.eth.h_proto = bpf_htons(ETH_P_IPV6),
63 	.iph.nexthdr = 6,
64 	.iph.payload_len = bpf_htons(MAGIC_BYTES),
65 	.tcp.urg_ptr = 123,
66 };
67 
68 #define CHECK(condition, tag, format...) ({				\
69 	int __ret = !!(condition);					\
70 	if (__ret) {							\
71 		error_cnt++;						\
72 		printf("%s:FAIL:%s ", __func__, tag);			\
73 		printf(format);						\
74 	} else {							\
75 		pass_cnt++;						\
76 		printf("%s:PASS:%s %d nsec\n", __func__, tag, duration);\
77 	}								\
78 	__ret;								\
79 })
80 
81 static int bpf_find_map(const char *test, struct bpf_object *obj,
82 			const char *name)
83 {
84 	struct bpf_map *map;
85 
86 	map = bpf_object__find_map_by_name(obj, name);
87 	if (!map) {
88 		printf("%s:FAIL:map '%s' not found\n", test, name);
89 		error_cnt++;
90 		return -1;
91 	}
92 	return bpf_map__fd(map);
93 }
94 
95 static void test_pkt_access(void)
96 {
97 	const char *file = "./test_pkt_access.o";
98 	struct bpf_object *obj;
99 	__u32 duration, retval;
100 	int err, prog_fd;
101 
102 	err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
103 	if (err) {
104 		error_cnt++;
105 		return;
106 	}
107 
108 	err = bpf_prog_test_run(prog_fd, 100000, &pkt_v4, sizeof(pkt_v4),
109 				NULL, NULL, &retval, &duration);
110 	CHECK(err || errno || retval, "ipv4",
111 	      "err %d errno %d retval %d duration %d\n",
112 	      err, errno, retval, duration);
113 
114 	err = bpf_prog_test_run(prog_fd, 100000, &pkt_v6, sizeof(pkt_v6),
115 				NULL, NULL, &retval, &duration);
116 	CHECK(err || errno || retval, "ipv6",
117 	      "err %d errno %d retval %d duration %d\n",
118 	      err, errno, retval, duration);
119 	bpf_object__close(obj);
120 }
121 
122 static void test_xdp(void)
123 {
124 	struct vip key4 = {.protocol = 6, .family = AF_INET};
125 	struct vip key6 = {.protocol = 6, .family = AF_INET6};
126 	struct iptnl_info value4 = {.family = AF_INET};
127 	struct iptnl_info value6 = {.family = AF_INET6};
128 	const char *file = "./test_xdp.o";
129 	struct bpf_object *obj;
130 	char buf[128];
131 	struct ipv6hdr *iph6 = (void *)buf + sizeof(struct ethhdr);
132 	struct iphdr *iph = (void *)buf + sizeof(struct ethhdr);
133 	__u32 duration, retval, size;
134 	int err, prog_fd, map_fd;
135 
136 	err = bpf_prog_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
137 	if (err) {
138 		error_cnt++;
139 		return;
140 	}
141 
142 	map_fd = bpf_find_map(__func__, obj, "vip2tnl");
143 	if (map_fd < 0)
144 		goto out;
145 	bpf_map_update_elem(map_fd, &key4, &value4, 0);
146 	bpf_map_update_elem(map_fd, &key6, &value6, 0);
147 
148 	err = bpf_prog_test_run(prog_fd, 1, &pkt_v4, sizeof(pkt_v4),
149 				buf, &size, &retval, &duration);
150 
151 	CHECK(err || errno || retval != XDP_TX || size != 74 ||
152 	      iph->protocol != IPPROTO_IPIP, "ipv4",
153 	      "err %d errno %d retval %d size %d\n",
154 	      err, errno, retval, size);
155 
156 	err = bpf_prog_test_run(prog_fd, 1, &pkt_v6, sizeof(pkt_v6),
157 				buf, &size, &retval, &duration);
158 	CHECK(err || errno || retval != XDP_TX || size != 114 ||
159 	      iph6->nexthdr != IPPROTO_IPV6, "ipv6",
160 	      "err %d errno %d retval %d size %d\n",
161 	      err, errno, retval, size);
162 out:
163 	bpf_object__close(obj);
164 }
165 
166 #define MAGIC_VAL 0x1234
167 #define NUM_ITER 100000
168 #define VIP_NUM 5
169 
170 static void test_l4lb(void)
171 {
172 	unsigned int nr_cpus = bpf_num_possible_cpus();
173 	const char *file = "./test_l4lb.o";
174 	struct vip key = {.protocol = 6};
175 	struct vip_meta {
176 		__u32 flags;
177 		__u32 vip_num;
178 	} value = {.vip_num = VIP_NUM};
179 	__u32 stats_key = VIP_NUM;
180 	struct vip_stats {
181 		__u64 bytes;
182 		__u64 pkts;
183 	} stats[nr_cpus];
184 	struct real_definition {
185 		union {
186 			__be32 dst;
187 			__be32 dstv6[4];
188 		};
189 		__u8 flags;
190 	} real_def = {.dst = MAGIC_VAL};
191 	__u32 ch_key = 11, real_num = 3;
192 	__u32 duration, retval, size;
193 	int err, i, prog_fd, map_fd;
194 	__u64 bytes = 0, pkts = 0;
195 	struct bpf_object *obj;
196 	char buf[128];
197 	u32 *magic = (u32 *)buf;
198 
199 	err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
200 	if (err) {
201 		error_cnt++;
202 		return;
203 	}
204 
205 	map_fd = bpf_find_map(__func__, obj, "vip_map");
206 	if (map_fd < 0)
207 		goto out;
208 	bpf_map_update_elem(map_fd, &key, &value, 0);
209 
210 	map_fd = bpf_find_map(__func__, obj, "ch_rings");
211 	if (map_fd < 0)
212 		goto out;
213 	bpf_map_update_elem(map_fd, &ch_key, &real_num, 0);
214 
215 	map_fd = bpf_find_map(__func__, obj, "reals");
216 	if (map_fd < 0)
217 		goto out;
218 	bpf_map_update_elem(map_fd, &real_num, &real_def, 0);
219 
220 	err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v4, sizeof(pkt_v4),
221 				buf, &size, &retval, &duration);
222 	CHECK(err || errno || retval != 7/*TC_ACT_REDIRECT*/ || size != 54 ||
223 	      *magic != MAGIC_VAL, "ipv4",
224 	      "err %d errno %d retval %d size %d magic %x\n",
225 	      err, errno, retval, size, *magic);
226 
227 	err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v6, sizeof(pkt_v6),
228 				buf, &size, &retval, &duration);
229 	CHECK(err || errno || retval != 7/*TC_ACT_REDIRECT*/ || size != 74 ||
230 	      *magic != MAGIC_VAL, "ipv6",
231 	      "err %d errno %d retval %d size %d magic %x\n",
232 	      err, errno, retval, size, *magic);
233 
234 	map_fd = bpf_find_map(__func__, obj, "stats");
235 	if (map_fd < 0)
236 		goto out;
237 	bpf_map_lookup_elem(map_fd, &stats_key, stats);
238 	for (i = 0; i < nr_cpus; i++) {
239 		bytes += stats[i].bytes;
240 		pkts += stats[i].pkts;
241 	}
242 	if (bytes != MAGIC_BYTES * NUM_ITER * 2 || pkts != NUM_ITER * 2) {
243 		error_cnt++;
244 		printf("test_l4lb:FAIL:stats %lld %lld\n", bytes, pkts);
245 	}
246 out:
247 	bpf_object__close(obj);
248 }
249 
250 static void test_tcp_estats(void)
251 {
252 	const char *file = "./test_tcp_estats.o";
253 	int err, prog_fd;
254 	struct bpf_object *obj;
255 	__u32 duration = 0;
256 
257 	err = bpf_prog_load(file, BPF_PROG_TYPE_TRACEPOINT, &obj, &prog_fd);
258 	CHECK(err, "", "err %d errno %d\n", err, errno);
259 	if (err) {
260 		error_cnt++;
261 		return;
262 	}
263 
264 	bpf_object__close(obj);
265 }
266 
267 static inline __u64 ptr_to_u64(const void *ptr)
268 {
269 	return (__u64) (unsigned long) ptr;
270 }
271 
272 static void test_bpf_obj_id(void)
273 {
274 	const __u64 array_magic_value = 0xfaceb00c;
275 	const __u32 array_key = 0;
276 	const int nr_iters = 2;
277 	const char *file = "./test_obj_id.o";
278 	const char *jit_sysctl = "/proc/sys/net/core/bpf_jit_enable";
279 	const char *expected_prog_name = "test_obj_id";
280 	const char *expected_map_name = "test_map_id";
281 	const __u64 nsec_per_sec = 1000000000;
282 
283 	struct bpf_object *objs[nr_iters];
284 	int prog_fds[nr_iters], map_fds[nr_iters];
285 	/* +1 to test for the info_len returned by kernel */
286 	struct bpf_prog_info prog_infos[nr_iters + 1];
287 	struct bpf_map_info map_infos[nr_iters + 1];
288 	/* Each prog only uses one map. +1 to test nr_map_ids
289 	 * returned by kernel.
290 	 */
291 	__u32 map_ids[nr_iters + 1];
292 	char jited_insns[128], xlated_insns[128], zeros[128];
293 	__u32 i, next_id, info_len, nr_id_found, duration = 0;
294 	struct timespec real_time_ts, boot_time_ts;
295 	int sysctl_fd, jit_enabled = 0, err = 0;
296 	__u64 array_value;
297 	uid_t my_uid = getuid();
298 	time_t now, load_time;
299 
300 	sysctl_fd = open(jit_sysctl, 0, O_RDONLY);
301 	if (sysctl_fd != -1) {
302 		char tmpc;
303 
304 		if (read(sysctl_fd, &tmpc, sizeof(tmpc)) == 1)
305 			jit_enabled = (tmpc != '0');
306 		close(sysctl_fd);
307 	}
308 
309 	err = bpf_prog_get_fd_by_id(0);
310 	CHECK(err >= 0 || errno != ENOENT,
311 	      "get-fd-by-notexist-prog-id", "err %d errno %d\n", err, errno);
312 
313 	err = bpf_map_get_fd_by_id(0);
314 	CHECK(err >= 0 || errno != ENOENT,
315 	      "get-fd-by-notexist-map-id", "err %d errno %d\n", err, errno);
316 
317 	for (i = 0; i < nr_iters; i++)
318 		objs[i] = NULL;
319 
320 	/* Check bpf_obj_get_info_by_fd() */
321 	bzero(zeros, sizeof(zeros));
322 	for (i = 0; i < nr_iters; i++) {
323 		now = time(NULL);
324 		err = bpf_prog_load(file, BPF_PROG_TYPE_SOCKET_FILTER,
325 				    &objs[i], &prog_fds[i]);
326 		/* test_obj_id.o is a dumb prog. It should never fail
327 		 * to load.
328 		 */
329 		if (err)
330 			error_cnt++;
331 		assert(!err);
332 
333 		/* Insert a magic value to the map */
334 		map_fds[i] = bpf_find_map(__func__, objs[i], "test_map_id");
335 		assert(map_fds[i] >= 0);
336 		err = bpf_map_update_elem(map_fds[i], &array_key,
337 					  &array_magic_value, 0);
338 		assert(!err);
339 
340 		/* Check getting map info */
341 		info_len = sizeof(struct bpf_map_info) * 2;
342 		bzero(&map_infos[i], info_len);
343 		err = bpf_obj_get_info_by_fd(map_fds[i], &map_infos[i],
344 					     &info_len);
345 		if (CHECK(err ||
346 			  map_infos[i].type != BPF_MAP_TYPE_ARRAY ||
347 			  map_infos[i].key_size != sizeof(__u32) ||
348 			  map_infos[i].value_size != sizeof(__u64) ||
349 			  map_infos[i].max_entries != 1 ||
350 			  map_infos[i].map_flags != 0 ||
351 			  info_len != sizeof(struct bpf_map_info) ||
352 			  strcmp((char *)map_infos[i].name, expected_map_name),
353 			  "get-map-info(fd)",
354 			  "err %d errno %d type %d(%d) info_len %u(%Zu) key_size %u value_size %u max_entries %u map_flags %X name %s(%s)\n",
355 			  err, errno,
356 			  map_infos[i].type, BPF_MAP_TYPE_ARRAY,
357 			  info_len, sizeof(struct bpf_map_info),
358 			  map_infos[i].key_size,
359 			  map_infos[i].value_size,
360 			  map_infos[i].max_entries,
361 			  map_infos[i].map_flags,
362 			  map_infos[i].name, expected_map_name))
363 			goto done;
364 
365 		/* Check getting prog info */
366 		info_len = sizeof(struct bpf_prog_info) * 2;
367 		bzero(&prog_infos[i], info_len);
368 		bzero(jited_insns, sizeof(jited_insns));
369 		bzero(xlated_insns, sizeof(xlated_insns));
370 		prog_infos[i].jited_prog_insns = ptr_to_u64(jited_insns);
371 		prog_infos[i].jited_prog_len = sizeof(jited_insns);
372 		prog_infos[i].xlated_prog_insns = ptr_to_u64(xlated_insns);
373 		prog_infos[i].xlated_prog_len = sizeof(xlated_insns);
374 		prog_infos[i].map_ids = ptr_to_u64(map_ids + i);
375 		prog_infos[i].nr_map_ids = 2;
376 		err = clock_gettime(CLOCK_REALTIME, &real_time_ts);
377 		assert(!err);
378 		err = clock_gettime(CLOCK_BOOTTIME, &boot_time_ts);
379 		assert(!err);
380 		err = bpf_obj_get_info_by_fd(prog_fds[i], &prog_infos[i],
381 					     &info_len);
382 		load_time = (real_time_ts.tv_sec - boot_time_ts.tv_sec)
383 			+ (prog_infos[i].load_time / nsec_per_sec);
384 		if (CHECK(err ||
385 			  prog_infos[i].type != BPF_PROG_TYPE_SOCKET_FILTER ||
386 			  info_len != sizeof(struct bpf_prog_info) ||
387 			  (jit_enabled && !prog_infos[i].jited_prog_len) ||
388 			  (jit_enabled &&
389 			   !memcmp(jited_insns, zeros, sizeof(zeros))) ||
390 			  !prog_infos[i].xlated_prog_len ||
391 			  !memcmp(xlated_insns, zeros, sizeof(zeros)) ||
392 			  load_time < now - 60 || load_time > now + 60 ||
393 			  prog_infos[i].created_by_uid != my_uid ||
394 			  prog_infos[i].nr_map_ids != 1 ||
395 			  *(int *)prog_infos[i].map_ids != map_infos[i].id ||
396 			  strcmp((char *)prog_infos[i].name, expected_prog_name),
397 			  "get-prog-info(fd)",
398 			  "err %d errno %d i %d type %d(%d) info_len %u(%Zu) jit_enabled %d jited_prog_len %u xlated_prog_len %u jited_prog %d xlated_prog %d load_time %lu(%lu) uid %u(%u) nr_map_ids %u(%u) map_id %u(%u) name %s(%s)\n",
399 			  err, errno, i,
400 			  prog_infos[i].type, BPF_PROG_TYPE_SOCKET_FILTER,
401 			  info_len, sizeof(struct bpf_prog_info),
402 			  jit_enabled,
403 			  prog_infos[i].jited_prog_len,
404 			  prog_infos[i].xlated_prog_len,
405 			  !!memcmp(jited_insns, zeros, sizeof(zeros)),
406 			  !!memcmp(xlated_insns, zeros, sizeof(zeros)),
407 			  load_time, now,
408 			  prog_infos[i].created_by_uid, my_uid,
409 			  prog_infos[i].nr_map_ids, 1,
410 			  *(int *)prog_infos[i].map_ids, map_infos[i].id,
411 			  prog_infos[i].name, expected_prog_name))
412 			goto done;
413 	}
414 
415 	/* Check bpf_prog_get_next_id() */
416 	nr_id_found = 0;
417 	next_id = 0;
418 	while (!bpf_prog_get_next_id(next_id, &next_id)) {
419 		struct bpf_prog_info prog_info = {};
420 		__u32 saved_map_id;
421 		int prog_fd;
422 
423 		info_len = sizeof(prog_info);
424 
425 		prog_fd = bpf_prog_get_fd_by_id(next_id);
426 		if (prog_fd < 0 && errno == ENOENT)
427 			/* The bpf_prog is in the dead row */
428 			continue;
429 		if (CHECK(prog_fd < 0, "get-prog-fd(next_id)",
430 			  "prog_fd %d next_id %d errno %d\n",
431 			  prog_fd, next_id, errno))
432 			break;
433 
434 		for (i = 0; i < nr_iters; i++)
435 			if (prog_infos[i].id == next_id)
436 				break;
437 
438 		if (i == nr_iters)
439 			continue;
440 
441 		nr_id_found++;
442 
443 		/* Negative test:
444 		 * prog_info.nr_map_ids = 1
445 		 * prog_info.map_ids = NULL
446 		 */
447 		prog_info.nr_map_ids = 1;
448 		err = bpf_obj_get_info_by_fd(prog_fd, &prog_info, &info_len);
449 		if (CHECK(!err || errno != EFAULT,
450 			  "get-prog-fd-bad-nr-map-ids", "err %d errno %d(%d)",
451 			  err, errno, EFAULT))
452 			break;
453 		bzero(&prog_info, sizeof(prog_info));
454 		info_len = sizeof(prog_info);
455 
456 		saved_map_id = *(int *)(prog_infos[i].map_ids);
457 		prog_info.map_ids = prog_infos[i].map_ids;
458 		prog_info.nr_map_ids = 2;
459 		err = bpf_obj_get_info_by_fd(prog_fd, &prog_info, &info_len);
460 		prog_infos[i].jited_prog_insns = 0;
461 		prog_infos[i].xlated_prog_insns = 0;
462 		CHECK(err || info_len != sizeof(struct bpf_prog_info) ||
463 		      memcmp(&prog_info, &prog_infos[i], info_len) ||
464 		      *(int *)prog_info.map_ids != saved_map_id,
465 		      "get-prog-info(next_id->fd)",
466 		      "err %d errno %d info_len %u(%Zu) memcmp %d map_id %u(%u)\n",
467 		      err, errno, info_len, sizeof(struct bpf_prog_info),
468 		      memcmp(&prog_info, &prog_infos[i], info_len),
469 		      *(int *)prog_info.map_ids, saved_map_id);
470 		close(prog_fd);
471 	}
472 	CHECK(nr_id_found != nr_iters,
473 	      "check total prog id found by get_next_id",
474 	      "nr_id_found %u(%u)\n",
475 	      nr_id_found, nr_iters);
476 
477 	/* Check bpf_map_get_next_id() */
478 	nr_id_found = 0;
479 	next_id = 0;
480 	while (!bpf_map_get_next_id(next_id, &next_id)) {
481 		struct bpf_map_info map_info = {};
482 		int map_fd;
483 
484 		info_len = sizeof(map_info);
485 
486 		map_fd = bpf_map_get_fd_by_id(next_id);
487 		if (map_fd < 0 && errno == ENOENT)
488 			/* The bpf_map is in the dead row */
489 			continue;
490 		if (CHECK(map_fd < 0, "get-map-fd(next_id)",
491 			  "map_fd %d next_id %u errno %d\n",
492 			  map_fd, next_id, errno))
493 			break;
494 
495 		for (i = 0; i < nr_iters; i++)
496 			if (map_infos[i].id == next_id)
497 				break;
498 
499 		if (i == nr_iters)
500 			continue;
501 
502 		nr_id_found++;
503 
504 		err = bpf_map_lookup_elem(map_fd, &array_key, &array_value);
505 		assert(!err);
506 
507 		err = bpf_obj_get_info_by_fd(map_fd, &map_info, &info_len);
508 		CHECK(err || info_len != sizeof(struct bpf_map_info) ||
509 		      memcmp(&map_info, &map_infos[i], info_len) ||
510 		      array_value != array_magic_value,
511 		      "check get-map-info(next_id->fd)",
512 		      "err %d errno %d info_len %u(%Zu) memcmp %d array_value %llu(%llu)\n",
513 		      err, errno, info_len, sizeof(struct bpf_map_info),
514 		      memcmp(&map_info, &map_infos[i], info_len),
515 		      array_value, array_magic_value);
516 
517 		close(map_fd);
518 	}
519 	CHECK(nr_id_found != nr_iters,
520 	      "check total map id found by get_next_id",
521 	      "nr_id_found %u(%u)\n",
522 	      nr_id_found, nr_iters);
523 
524 done:
525 	for (i = 0; i < nr_iters; i++)
526 		bpf_object__close(objs[i]);
527 }
528 
529 static void test_pkt_md_access(void)
530 {
531 	const char *file = "./test_pkt_md_access.o";
532 	struct bpf_object *obj;
533 	__u32 duration, retval;
534 	int err, prog_fd;
535 
536 	err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
537 	if (err) {
538 		error_cnt++;
539 		return;
540 	}
541 
542 	err = bpf_prog_test_run(prog_fd, 10, &pkt_v4, sizeof(pkt_v4),
543 				NULL, NULL, &retval, &duration);
544 	CHECK(err || retval, "",
545 	      "err %d errno %d retval %d duration %d\n",
546 	      err, errno, retval, duration);
547 
548 	bpf_object__close(obj);
549 }
550 
551 static void test_obj_name(void)
552 {
553 	struct {
554 		const char *name;
555 		int success;
556 		int expected_errno;
557 	} tests[] = {
558 		{ "", 1, 0 },
559 		{ "_123456789ABCDE", 1, 0 },
560 		{ "_123456789ABCDEF", 0, EINVAL },
561 		{ "_123456789ABCD\n", 0, EINVAL },
562 	};
563 	struct bpf_insn prog[] = {
564 		BPF_ALU64_IMM(BPF_MOV, BPF_REG_0, 0),
565 		BPF_EXIT_INSN(),
566 	};
567 	__u32 duration = 0;
568 	int i;
569 
570 	for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) {
571 		size_t name_len = strlen(tests[i].name) + 1;
572 		union bpf_attr attr;
573 		size_t ncopy;
574 		int fd;
575 
576 		/* test different attr.prog_name during BPF_PROG_LOAD */
577 		ncopy = name_len < sizeof(attr.prog_name) ?
578 			name_len : sizeof(attr.prog_name);
579 		bzero(&attr, sizeof(attr));
580 		attr.prog_type = BPF_PROG_TYPE_SCHED_CLS;
581 		attr.insn_cnt = 2;
582 		attr.insns = ptr_to_u64(prog);
583 		attr.license = ptr_to_u64("");
584 		memcpy(attr.prog_name, tests[i].name, ncopy);
585 
586 		fd = syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr));
587 		CHECK((tests[i].success && fd < 0) ||
588 		      (!tests[i].success && fd != -1) ||
589 		      (!tests[i].success && errno != tests[i].expected_errno),
590 		      "check-bpf-prog-name",
591 		      "fd %d(%d) errno %d(%d)\n",
592 		       fd, tests[i].success, errno, tests[i].expected_errno);
593 
594 		if (fd != -1)
595 			close(fd);
596 
597 		/* test different attr.map_name during BPF_MAP_CREATE */
598 		ncopy = name_len < sizeof(attr.map_name) ?
599 			name_len : sizeof(attr.map_name);
600 		bzero(&attr, sizeof(attr));
601 		attr.map_type = BPF_MAP_TYPE_ARRAY;
602 		attr.key_size = 4;
603 		attr.value_size = 4;
604 		attr.max_entries = 1;
605 		attr.map_flags = 0;
606 		memcpy(attr.map_name, tests[i].name, ncopy);
607 		fd = syscall(__NR_bpf, BPF_MAP_CREATE, &attr, sizeof(attr));
608 		CHECK((tests[i].success && fd < 0) ||
609 		      (!tests[i].success && fd != -1) ||
610 		      (!tests[i].success && errno != tests[i].expected_errno),
611 		      "check-bpf-map-name",
612 		      "fd %d(%d) errno %d(%d)\n",
613 		      fd, tests[i].success, errno, tests[i].expected_errno);
614 
615 		if (fd != -1)
616 			close(fd);
617 	}
618 }
619 
620 int main(void)
621 {
622 	struct rlimit rinf = { RLIM_INFINITY, RLIM_INFINITY };
623 
624 	setrlimit(RLIMIT_MEMLOCK, &rinf);
625 
626 	test_pkt_access();
627 	test_xdp();
628 	test_l4lb();
629 	test_tcp_estats();
630 	test_bpf_obj_id();
631 	test_pkt_md_access();
632 	test_obj_name();
633 
634 	printf("Summary: %d PASSED, %d FAILED\n", pass_cnt, error_cnt);
635 	return error_cnt ? EXIT_FAILURE : EXIT_SUCCESS;
636 }
637