1 /* Copyright (c) 2017 Facebook
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.
14 #include <linux/types.h>
15 typedef __u16 __sum16;
16 #include <arpa/inet.h>
17 #include <linux/if_ether.h>
18 #include <linux/if_packet.h>
20 #include <linux/ipv6.h>
21 #include <linux/tcp.h>
24 #include <sys/resource.h>
25 #include <sys/types.h>
28 #include <linux/bpf.h>
29 #include <linux/err.h>
31 #include <bpf/libbpf.h>
32 #include "test_iptunnel_common.h"
34 #include "bpf_endian.h"
36 static int error_cnt, pass_cnt;
38 #define MAGIC_BYTES 123
40 /* ipv4 test vector */
46 .eth.h_proto = bpf_htons(ETH_P_IP),
49 .iph.tot_len = bpf_htons(MAGIC_BYTES),
53 /* ipv6 test vector */
59 .eth.h_proto = bpf_htons(ETH_P_IPV6),
61 .iph.payload_len = bpf_htons(MAGIC_BYTES),
65 #define CHECK(condition, tag, format...) ({ \
66 int __ret = !!(condition); \
69 printf("%s:FAIL:%s ", __func__, tag); \
73 printf("%s:PASS:%s %d nsec\n", __func__, tag, duration);\
78 static int bpf_prog_load(const char *file, enum bpf_prog_type type,
79 struct bpf_object **pobj, int *prog_fd)
81 struct bpf_program *prog;
82 struct bpf_object *obj;
85 obj = bpf_object__open(file);
91 prog = bpf_program__next(NULL, obj);
93 bpf_object__close(obj);
98 bpf_program__set_type(prog, type);
99 err = bpf_object__load(obj);
101 bpf_object__close(obj);
107 *prog_fd = bpf_program__fd(prog);
111 static int bpf_find_map(const char *test, struct bpf_object *obj,
116 map = bpf_object__find_map_by_name(obj, name);
118 printf("%s:FAIL:map '%s' not found\n", test, name);
122 return bpf_map__fd(map);
125 static void test_pkt_access(void)
127 const char *file = "./test_pkt_access.o";
128 struct bpf_object *obj;
129 __u32 duration, retval;
132 err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
136 err = bpf_prog_test_run(prog_fd, 100000, &pkt_v4, sizeof(pkt_v4),
137 NULL, NULL, &retval, &duration);
138 CHECK(err || errno || retval, "ipv4",
139 "err %d errno %d retval %d duration %d\n",
140 err, errno, retval, duration);
142 err = bpf_prog_test_run(prog_fd, 100000, &pkt_v6, sizeof(pkt_v6),
143 NULL, NULL, &retval, &duration);
144 CHECK(err || errno || retval, "ipv6",
145 "err %d errno %d retval %d duration %d\n",
146 err, errno, retval, duration);
147 bpf_object__close(obj);
150 static void test_xdp(void)
152 struct vip key4 = {.protocol = 6, .family = AF_INET};
153 struct vip key6 = {.protocol = 6, .family = AF_INET6};
154 struct iptnl_info value4 = {.family = AF_INET};
155 struct iptnl_info value6 = {.family = AF_INET6};
156 const char *file = "./test_xdp.o";
157 struct bpf_object *obj;
159 struct ipv6hdr *iph6 = (void *)buf + sizeof(struct ethhdr);
160 struct iphdr *iph = (void *)buf + sizeof(struct ethhdr);
161 __u32 duration, retval, size;
162 int err, prog_fd, map_fd;
164 err = bpf_prog_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
168 map_fd = bpf_find_map(__func__, obj, "vip2tnl");
171 bpf_map_update_elem(map_fd, &key4, &value4, 0);
172 bpf_map_update_elem(map_fd, &key6, &value6, 0);
174 err = bpf_prog_test_run(prog_fd, 1, &pkt_v4, sizeof(pkt_v4),
175 buf, &size, &retval, &duration);
177 CHECK(err || errno || retval != XDP_TX || size != 74 ||
178 iph->protocol != IPPROTO_IPIP, "ipv4",
179 "err %d errno %d retval %d size %d\n",
180 err, errno, retval, size);
182 err = bpf_prog_test_run(prog_fd, 1, &pkt_v6, sizeof(pkt_v6),
183 buf, &size, &retval, &duration);
184 CHECK(err || errno || retval != XDP_TX || size != 114 ||
185 iph6->nexthdr != IPPROTO_IPV6, "ipv6",
186 "err %d errno %d retval %d size %d\n",
187 err, errno, retval, size);
189 bpf_object__close(obj);
192 #define MAGIC_VAL 0x1234
193 #define NUM_ITER 100000
196 static void test_l4lb(void)
198 unsigned int nr_cpus = bpf_num_possible_cpus();
199 const char *file = "./test_l4lb.o";
200 struct vip key = {.protocol = 6};
204 } value = {.vip_num = VIP_NUM};
205 __u32 stats_key = VIP_NUM;
210 struct real_definition {
216 } real_def = {.dst = MAGIC_VAL};
217 __u32 ch_key = 11, real_num = 3;
218 __u32 duration, retval, size;
219 int err, i, prog_fd, map_fd;
220 __u64 bytes = 0, pkts = 0;
221 struct bpf_object *obj;
223 u32 *magic = (u32 *)buf;
225 err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
229 map_fd = bpf_find_map(__func__, obj, "vip_map");
232 bpf_map_update_elem(map_fd, &key, &value, 0);
234 map_fd = bpf_find_map(__func__, obj, "ch_rings");
237 bpf_map_update_elem(map_fd, &ch_key, &real_num, 0);
239 map_fd = bpf_find_map(__func__, obj, "reals");
242 bpf_map_update_elem(map_fd, &real_num, &real_def, 0);
244 err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v4, sizeof(pkt_v4),
245 buf, &size, &retval, &duration);
246 CHECK(err || errno || retval != 7/*TC_ACT_REDIRECT*/ || size != 54 ||
247 *magic != MAGIC_VAL, "ipv4",
248 "err %d errno %d retval %d size %d magic %x\n",
249 err, errno, retval, size, *magic);
251 err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v6, sizeof(pkt_v6),
252 buf, &size, &retval, &duration);
253 CHECK(err || errno || retval != 7/*TC_ACT_REDIRECT*/ || size != 74 ||
254 *magic != MAGIC_VAL, "ipv6",
255 "err %d errno %d retval %d size %d magic %x\n",
256 err, errno, retval, size, *magic);
258 map_fd = bpf_find_map(__func__, obj, "stats");
261 bpf_map_lookup_elem(map_fd, &stats_key, stats);
262 for (i = 0; i < nr_cpus; i++) {
263 bytes += stats[i].bytes;
264 pkts += stats[i].pkts;
266 if (bytes != MAGIC_BYTES * NUM_ITER * 2 || pkts != NUM_ITER * 2) {
268 printf("test_l4lb:FAIL:stats %lld %lld\n", bytes, pkts);
271 bpf_object__close(obj);
274 static void test_tcp_estats(void)
276 const char *file = "./test_tcp_estats.o";
278 struct bpf_object *obj;
281 err = bpf_prog_load(file, BPF_PROG_TYPE_TRACEPOINT, &obj, &prog_fd);
282 CHECK(err, "", "err %d errno %d\n", err, errno);
286 bpf_object__close(obj);
289 static inline __u64 ptr_to_u64(const void *ptr)
291 return (__u64) (unsigned long) ptr;
294 static void test_bpf_obj_id(void)
296 const __u64 array_magic_value = 0xfaceb00c;
297 const __u32 array_key = 0;
298 const int nr_iters = 2;
299 const char *file = "./test_obj_id.o";
300 const char *jit_sysctl = "/proc/sys/net/core/bpf_jit_enable";
302 struct bpf_object *objs[nr_iters];
303 int prog_fds[nr_iters], map_fds[nr_iters];
304 /* +1 to test for the info_len returned by kernel */
305 struct bpf_prog_info prog_infos[nr_iters + 1];
306 struct bpf_map_info map_infos[nr_iters + 1];
307 char jited_insns[128], xlated_insns[128];
308 __u32 i, next_id, info_len, nr_id_found, duration = 0;
309 int sysctl_fd, jit_enabled = 0, err = 0;
312 sysctl_fd = open(jit_sysctl, 0, O_RDONLY);
313 if (sysctl_fd != -1) {
316 if (read(sysctl_fd, &tmpc, sizeof(tmpc)) == 1)
317 jit_enabled = (tmpc != '0');
321 err = bpf_prog_get_fd_by_id(0);
322 CHECK(err >= 0 || errno != ENOENT,
323 "get-fd-by-notexist-prog-id", "err %d errno %d\n", err, errno);
325 err = bpf_map_get_fd_by_id(0);
326 CHECK(err >= 0 || errno != ENOENT,
327 "get-fd-by-notexist-map-id", "err %d errno %d\n", err, errno);
329 for (i = 0; i < nr_iters; i++)
332 /* Check bpf_obj_get_info_by_fd() */
333 for (i = 0; i < nr_iters; i++) {
334 err = bpf_prog_load(file, BPF_PROG_TYPE_SOCKET_FILTER,
335 &objs[i], &prog_fds[i]);
336 /* test_obj_id.o is a dumb prog. It should never fail
341 /* Check getting prog info */
342 info_len = sizeof(struct bpf_prog_info) * 2;
343 prog_infos[i].jited_prog_insns = ptr_to_u64(jited_insns);
344 prog_infos[i].jited_prog_len = sizeof(jited_insns);
345 prog_infos[i].xlated_prog_insns = ptr_to_u64(xlated_insns);
346 prog_infos[i].xlated_prog_len = sizeof(xlated_insns);
347 err = bpf_obj_get_info_by_fd(prog_fds[i], &prog_infos[i],
350 prog_infos[i].type != BPF_PROG_TYPE_SOCKET_FILTER ||
351 info_len != sizeof(struct bpf_prog_info) ||
352 (jit_enabled && !prog_infos[i].jited_prog_len) ||
353 !prog_infos[i].xlated_prog_len,
355 "err %d errno %d i %d type %d(%d) info_len %u(%lu) jit_enabled %d jited_prog_len %u xlated_prog_len %u\n",
357 prog_infos[i].type, BPF_PROG_TYPE_SOCKET_FILTER,
358 info_len, sizeof(struct bpf_prog_info),
360 prog_infos[i].jited_prog_len,
361 prog_infos[i].xlated_prog_len))
364 map_fds[i] = bpf_find_map(__func__, objs[i], "test_map_id");
365 assert(map_fds[i] >= 0);
366 err = bpf_map_update_elem(map_fds[i], &array_key,
367 &array_magic_value, 0);
370 /* Check getting map info */
371 info_len = sizeof(struct bpf_map_info) * 2;
372 err = bpf_obj_get_info_by_fd(map_fds[i], &map_infos[i],
375 map_infos[i].type != BPF_MAP_TYPE_ARRAY ||
376 map_infos[i].key_size != sizeof(__u32) ||
377 map_infos[i].value_size != sizeof(__u64) ||
378 map_infos[i].max_entries != 1 ||
379 map_infos[i].map_flags != 0 ||
380 info_len != sizeof(struct bpf_map_info),
382 "err %d errno %d type %d(%d) info_len %u(%lu) key_size %u value_size %u max_entries %u map_flags %X\n",
384 map_infos[i].type, BPF_MAP_TYPE_ARRAY,
385 info_len, sizeof(struct bpf_map_info),
386 map_infos[i].key_size,
387 map_infos[i].value_size,
388 map_infos[i].max_entries,
389 map_infos[i].map_flags))
393 /* Check bpf_prog_get_next_id() */
396 while (!bpf_prog_get_next_id(next_id, &next_id)) {
397 struct bpf_prog_info prog_info;
400 info_len = sizeof(prog_info);
402 prog_fd = bpf_prog_get_fd_by_id(next_id);
403 if (prog_fd < 0 && errno == ENOENT)
404 /* The bpf_prog is in the dead row */
406 if (CHECK(prog_fd < 0, "get-prog-fd(next_id)",
407 "prog_fd %d next_id %d errno %d\n",
408 prog_fd, next_id, errno))
411 for (i = 0; i < nr_iters; i++)
412 if (prog_infos[i].id == next_id)
420 err = bpf_obj_get_info_by_fd(prog_fd, &prog_info, &info_len);
421 CHECK(err || info_len != sizeof(struct bpf_prog_info) ||
422 memcmp(&prog_info, &prog_infos[i], info_len),
423 "get-prog-info(next_id->fd)",
424 "err %d errno %d info_len %u(%lu) memcmp %d\n",
425 err, errno, info_len, sizeof(struct bpf_prog_info),
426 memcmp(&prog_info, &prog_infos[i], info_len));
430 CHECK(nr_id_found != nr_iters,
431 "check total prog id found by get_next_id",
432 "nr_id_found %u(%u)\n",
433 nr_id_found, nr_iters);
435 /* Check bpf_map_get_next_id() */
438 while (!bpf_map_get_next_id(next_id, &next_id)) {
439 struct bpf_map_info map_info;
442 info_len = sizeof(map_info);
444 map_fd = bpf_map_get_fd_by_id(next_id);
445 if (map_fd < 0 && errno == ENOENT)
446 /* The bpf_map is in the dead row */
448 if (CHECK(map_fd < 0, "get-map-fd(next_id)",
449 "map_fd %d next_id %u errno %d\n",
450 map_fd, next_id, errno))
453 for (i = 0; i < nr_iters; i++)
454 if (map_infos[i].id == next_id)
462 err = bpf_map_lookup_elem(map_fd, &array_key, &array_value);
465 err = bpf_obj_get_info_by_fd(map_fd, &map_info, &info_len);
466 CHECK(err || info_len != sizeof(struct bpf_map_info) ||
467 memcmp(&map_info, &map_infos[i], info_len) ||
468 array_value != array_magic_value,
469 "check get-map-info(next_id->fd)",
470 "err %d errno %d info_len %u(%lu) memcmp %d array_value %llu(%llu)\n",
471 err, errno, info_len, sizeof(struct bpf_map_info),
472 memcmp(&map_info, &map_infos[i], info_len),
473 array_value, array_magic_value);
477 CHECK(nr_id_found != nr_iters,
478 "check total map id found by get_next_id",
479 "nr_id_found %u(%u)\n",
480 nr_id_found, nr_iters);
483 for (i = 0; i < nr_iters; i++)
484 bpf_object__close(objs[i]);
487 static void test_pkt_md_access(void)
489 const char *file = "./test_pkt_md_access.o";
490 struct bpf_object *obj;
491 __u32 duration, retval;
494 err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
498 err = bpf_prog_test_run(prog_fd, 10, &pkt_v4, sizeof(pkt_v4),
499 NULL, NULL, &retval, &duration);
500 CHECK(err || retval, "",
501 "err %d errno %d retval %d duration %d\n",
502 err, errno, retval, duration);
504 bpf_object__close(obj);
509 struct rlimit rinf = { RLIM_INFINITY, RLIM_INFINITY };
511 setrlimit(RLIMIT_MEMLOCK, &rinf);
518 test_pkt_md_access();
520 printf("Summary: %d PASSED, %d FAILED\n", pass_cnt, error_cnt);
521 return error_cnt ? EXIT_FAILURE : EXIT_SUCCESS;