Commit 886225bb authored by Stanislav Fomichev's avatar Stanislav Fomichev Committed by Alexei Starovoitov
Browse files

selftests: bpf: break up test_progs - misc 



Move the rest of prog tests into separate files.

Signed-off-by: default avatarStanislav Fomichev <sdf@google.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 271a6337

tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c

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// SPDX-License-Identifier: GPL-2.0

#include <test_progs.h>



void test_bpf_obj_id(void)

{

	const __u64 array_magic_value = 0xfaceb00c;

	const __u32 array_key = 0;

	const int nr_iters = 2;

	const char *file = "./test_obj_id.o";

	const char *expected_prog_name = "test_obj_id";

	const char *expected_map_name = "test_map_id";

	const __u64 nsec_per_sec = 1000000000;



	struct bpf_object *objs[nr_iters];

	int prog_fds[nr_iters], map_fds[nr_iters];

	/* +1 to test for the info_len returned by kernel */

	struct bpf_prog_info prog_infos[nr_iters + 1];

	struct bpf_map_info map_infos[nr_iters + 1];

	/* Each prog only uses one map. +1 to test nr_map_ids

	 * returned by kernel.

	 */

	__u32 map_ids[nr_iters + 1];

	char jited_insns[128], xlated_insns[128], zeros[128];

	__u32 i, next_id, info_len, nr_id_found, duration = 0;

	struct timespec real_time_ts, boot_time_ts;

	int err = 0;

	__u64 array_value;

	uid_t my_uid = getuid();

	time_t now, load_time;



	err = bpf_prog_get_fd_by_id(0);

	CHECK(err >= 0 || errno != ENOENT,

	      "get-fd-by-notexist-prog-id", "err %d errno %d\n", err, errno);



	err = bpf_map_get_fd_by_id(0);

	CHECK(err >= 0 || errno != ENOENT,

	      "get-fd-by-notexist-map-id", "err %d errno %d\n", err, errno);



	for (i = 0; i < nr_iters; i++)

		objs[i] = NULL;



	/* Check bpf_obj_get_info_by_fd() */

	bzero(zeros, sizeof(zeros));

	for (i = 0; i < nr_iters; i++) {

		now = time(NULL);

		err = bpf_prog_load(file, BPF_PROG_TYPE_SOCKET_FILTER,

				    &objs[i], &prog_fds[i]);

		/* test_obj_id.o is a dumb prog. It should never fail

		 * to load.

		 */

		if (err)

			error_cnt++;

		assert(!err);



		/* Insert a magic value to the map */

		map_fds[i] = bpf_find_map(__func__, objs[i], "test_map_id");

		assert(map_fds[i] >= 0);

		err = bpf_map_update_elem(map_fds[i], &array_key,

					  &array_magic_value, 0);

		assert(!err);



		/* Check getting map info */

		info_len = sizeof(struct bpf_map_info) * 2;

		bzero(&map_infos[i], info_len);

		err = bpf_obj_get_info_by_fd(map_fds[i], &map_infos[i],

					     &info_len);

		if (CHECK(err ||

			  map_infos[i].type != BPF_MAP_TYPE_ARRAY ||

			  map_infos[i].key_size != sizeof(__u32) ||

			  map_infos[i].value_size != sizeof(__u64) ||

			  map_infos[i].max_entries != 1 ||

			  map_infos[i].map_flags != 0 ||

			  info_len != sizeof(struct bpf_map_info) ||

			  strcmp((char *)map_infos[i].name, expected_map_name),

			  "get-map-info(fd)",

			  "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",

			  err, errno,

			  map_infos[i].type, BPF_MAP_TYPE_ARRAY,

			  info_len, sizeof(struct bpf_map_info),

			  map_infos[i].key_size,

			  map_infos[i].value_size,

			  map_infos[i].max_entries,

			  map_infos[i].map_flags,

			  map_infos[i].name, expected_map_name))

			goto done;



		/* Check getting prog info */

		info_len = sizeof(struct bpf_prog_info) * 2;

		bzero(&prog_infos[i], info_len);

		bzero(jited_insns, sizeof(jited_insns));

		bzero(xlated_insns, sizeof(xlated_insns));

		prog_infos[i].jited_prog_insns = ptr_to_u64(jited_insns);

		prog_infos[i].jited_prog_len = sizeof(jited_insns);

		prog_infos[i].xlated_prog_insns = ptr_to_u64(xlated_insns);

		prog_infos[i].xlated_prog_len = sizeof(xlated_insns);

		prog_infos[i].map_ids = ptr_to_u64(map_ids + i);

		prog_infos[i].nr_map_ids = 2;

		err = clock_gettime(CLOCK_REALTIME, &real_time_ts);

		assert(!err);

		err = clock_gettime(CLOCK_BOOTTIME, &boot_time_ts);

		assert(!err);

		err = bpf_obj_get_info_by_fd(prog_fds[i], &prog_infos[i],

					     &info_len);

		load_time = (real_time_ts.tv_sec - boot_time_ts.tv_sec)

			+ (prog_infos[i].load_time / nsec_per_sec);

		if (CHECK(err ||

			  prog_infos[i].type != BPF_PROG_TYPE_SOCKET_FILTER ||

			  info_len != sizeof(struct bpf_prog_info) ||

			  (jit_enabled && !prog_infos[i].jited_prog_len) ||

			  (jit_enabled &&

			   !memcmp(jited_insns, zeros, sizeof(zeros))) ||

			  !prog_infos[i].xlated_prog_len ||

			  !memcmp(xlated_insns, zeros, sizeof(zeros)) ||

			  load_time < now - 60 || load_time > now + 60 ||

			  prog_infos[i].created_by_uid != my_uid ||

			  prog_infos[i].nr_map_ids != 1 ||

			  *(int *)(long)prog_infos[i].map_ids != map_infos[i].id ||

			  strcmp((char *)prog_infos[i].name, expected_prog_name),

			  "get-prog-info(fd)",

			  "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",

			  err, errno, i,

			  prog_infos[i].type, BPF_PROG_TYPE_SOCKET_FILTER,

			  info_len, sizeof(struct bpf_prog_info),

			  jit_enabled,

			  prog_infos[i].jited_prog_len,

			  prog_infos[i].xlated_prog_len,

			  !!memcmp(jited_insns, zeros, sizeof(zeros)),

			  !!memcmp(xlated_insns, zeros, sizeof(zeros)),

			  load_time, now,

			  prog_infos[i].created_by_uid, my_uid,

			  prog_infos[i].nr_map_ids, 1,

			  *(int *)(long)prog_infos[i].map_ids, map_infos[i].id,

			  prog_infos[i].name, expected_prog_name))

			goto done;

	}



	/* Check bpf_prog_get_next_id() */

	nr_id_found = 0;

	next_id = 0;

	while (!bpf_prog_get_next_id(next_id, &next_id)) {

		struct bpf_prog_info prog_info = {};

		__u32 saved_map_id;

		int prog_fd;



		info_len = sizeof(prog_info);



		prog_fd = bpf_prog_get_fd_by_id(next_id);

		if (prog_fd < 0 && errno == ENOENT)

			/* The bpf_prog is in the dead row */

			continue;

		if (CHECK(prog_fd < 0, "get-prog-fd(next_id)",

			  "prog_fd %d next_id %d errno %d\n",

			  prog_fd, next_id, errno))

			break;



		for (i = 0; i < nr_iters; i++)

			if (prog_infos[i].id == next_id)

				break;



		if (i == nr_iters)

			continue;



		nr_id_found++;



		/* Negative test:

		 * prog_info.nr_map_ids = 1

		 * prog_info.map_ids = NULL

		 */

		prog_info.nr_map_ids = 1;

		err = bpf_obj_get_info_by_fd(prog_fd, &prog_info, &info_len);

		if (CHECK(!err || errno != EFAULT,

			  "get-prog-fd-bad-nr-map-ids", "err %d errno %d(%d)",

			  err, errno, EFAULT))

			break;

		bzero(&prog_info, sizeof(prog_info));

		info_len = sizeof(prog_info);



		saved_map_id = *(int *)((long)prog_infos[i].map_ids);

		prog_info.map_ids = prog_infos[i].map_ids;

		prog_info.nr_map_ids = 2;

		err = bpf_obj_get_info_by_fd(prog_fd, &prog_info, &info_len);

		prog_infos[i].jited_prog_insns = 0;

		prog_infos[i].xlated_prog_insns = 0;

		CHECK(err || info_len != sizeof(struct bpf_prog_info) ||

		      memcmp(&prog_info, &prog_infos[i], info_len) ||

		      *(int *)(long)prog_info.map_ids != saved_map_id,

		      "get-prog-info(next_id->fd)",

		      "err %d errno %d info_len %u(%Zu) memcmp %d map_id %u(%u)\n",

		      err, errno, info_len, sizeof(struct bpf_prog_info),

		      memcmp(&prog_info, &prog_infos[i], info_len),

		      *(int *)(long)prog_info.map_ids, saved_map_id);

		close(prog_fd);

	}

	CHECK(nr_id_found != nr_iters,

	      "check total prog id found by get_next_id",

	      "nr_id_found %u(%u)\n",

	      nr_id_found, nr_iters);



	/* Check bpf_map_get_next_id() */

	nr_id_found = 0;

	next_id = 0;

	while (!bpf_map_get_next_id(next_id, &next_id)) {

		struct bpf_map_info map_info = {};

		int map_fd;



		info_len = sizeof(map_info);



		map_fd = bpf_map_get_fd_by_id(next_id);

		if (map_fd < 0 && errno == ENOENT)

			/* The bpf_map is in the dead row */

			continue;

		if (CHECK(map_fd < 0, "get-map-fd(next_id)",

			  "map_fd %d next_id %u errno %d\n",

			  map_fd, next_id, errno))

			break;



		for (i = 0; i < nr_iters; i++)

			if (map_infos[i].id == next_id)

				break;



		if (i == nr_iters)

			continue;



		nr_id_found++;



		err = bpf_map_lookup_elem(map_fd, &array_key, &array_value);

		assert(!err);



		err = bpf_obj_get_info_by_fd(map_fd, &map_info, &info_len);

		CHECK(err || info_len != sizeof(struct bpf_map_info) ||

		      memcmp(&map_info, &map_infos[i], info_len) ||

		      array_value != array_magic_value,

		      "check get-map-info(next_id->fd)",

		      "err %d errno %d info_len %u(%Zu) memcmp %d array_value %llu(%llu)\n",

		      err, errno, info_len, sizeof(struct bpf_map_info),

		      memcmp(&map_info, &map_infos[i], info_len),

		      array_value, array_magic_value);



		close(map_fd);

	}

	CHECK(nr_id_found != nr_iters,

	      "check total map id found by get_next_id",

	      "nr_id_found %u(%u)\n",

	      nr_id_found, nr_iters);



done:

	for (i = 0; i < nr_iters; i++)

		bpf_object__close(objs[i]);

}

tools/testing/selftests/bpf/prog_tests/flow_dissector.c

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Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

#include <test_progs.h>



#define CHECK_FLOW_KEYS(desc, got, expected)				\

	CHECK(memcmp(&got, &expected, sizeof(got)) != 0,		\

	      desc,							\

	      "nhoff=%u/%u "						\

	      "thoff=%u/%u "						\

	      "addr_proto=0x%x/0x%x "					\

	      "is_frag=%u/%u "						\

	      "is_first_frag=%u/%u "					\

	      "is_encap=%u/%u "						\

	      "n_proto=0x%x/0x%x "					\

	      "sport=%u/%u "						\

	      "dport=%u/%u\n",						\

	      got.nhoff, expected.nhoff,				\

	      got.thoff, expected.thoff,				\

	      got.addr_proto, expected.addr_proto,			\

	      got.is_frag, expected.is_frag,				\

	      got.is_first_frag, expected.is_first_frag,		\

	      got.is_encap, expected.is_encap,				\

	      got.n_proto, expected.n_proto,				\

	      got.sport, expected.sport,				\

	      got.dport, expected.dport)



static struct bpf_flow_keys pkt_v4_flow_keys = {

	.nhoff = 0,

	.thoff = sizeof(struct iphdr),

	.addr_proto = ETH_P_IP,

	.ip_proto = IPPROTO_TCP,

	.n_proto = __bpf_constant_htons(ETH_P_IP),

};



static struct bpf_flow_keys pkt_v6_flow_keys = {

	.nhoff = 0,

	.thoff = sizeof(struct ipv6hdr),

	.addr_proto = ETH_P_IPV6,

	.ip_proto = IPPROTO_TCP,

	.n_proto = __bpf_constant_htons(ETH_P_IPV6),

};



void test_flow_dissector(void)

{

	struct bpf_flow_keys flow_keys;

	struct bpf_object *obj;

	__u32 duration, retval;

	int err, prog_fd;

	__u32 size;



	err = bpf_flow_load(&obj, "./bpf_flow.o", "flow_dissector",

			    "jmp_table", &prog_fd);

	if (err) {

		error_cnt++;

		return;

	}



	err = bpf_prog_test_run(prog_fd, 10, &pkt_v4, sizeof(pkt_v4),

				&flow_keys, &size, &retval, &duration);

	CHECK(size != sizeof(flow_keys) || err || retval != 1, "ipv4",

	      "err %d errno %d retval %d duration %d size %u/%lu\n",

	      err, errno, retval, duration, size, sizeof(flow_keys));

	CHECK_FLOW_KEYS("ipv4_flow_keys", flow_keys, pkt_v4_flow_keys);



	err = bpf_prog_test_run(prog_fd, 10, &pkt_v6, sizeof(pkt_v6),

				&flow_keys, &size, &retval, &duration);

	CHECK(size != sizeof(flow_keys) || err || retval != 1, "ipv6",

	      "err %d errno %d retval %d duration %d size %u/%lu\n",

	      err, errno, retval, duration, size, sizeof(flow_keys));

	CHECK_FLOW_KEYS("ipv6_flow_keys", flow_keys, pkt_v6_flow_keys);



	bpf_object__close(obj);

}

tools/testing/selftests/bpf/prog_tests/l4lb_all.c

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Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

#include <test_progs.h>



static void test_l4lb(const char *file)

{

	unsigned int nr_cpus = bpf_num_possible_cpus();

	struct vip key = {.protocol = 6};

	struct vip_meta {

		__u32 flags;

		__u32 vip_num;

	} value = {.vip_num = VIP_NUM};

	__u32 stats_key = VIP_NUM;

	struct vip_stats {

		__u64 bytes;

		__u64 pkts;

	} stats[nr_cpus];

	struct real_definition {

		union {

			__be32 dst;

			__be32 dstv6[4];

		};

		__u8 flags;

	} real_def = {.dst = MAGIC_VAL};

	__u32 ch_key = 11, real_num = 3;

	__u32 duration, retval, size;

	int err, i, prog_fd, map_fd;

	__u64 bytes = 0, pkts = 0;

	struct bpf_object *obj;

	char buf[128];

	u32 *magic = (u32 *)buf;



	err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);

	if (err) {

		error_cnt++;

		return;

	}



	map_fd = bpf_find_map(__func__, obj, "vip_map");

	if (map_fd < 0)

		goto out;

	bpf_map_update_elem(map_fd, &key, &value, 0);



	map_fd = bpf_find_map(__func__, obj, "ch_rings");

	if (map_fd < 0)

		goto out;

	bpf_map_update_elem(map_fd, &ch_key, &real_num, 0);



	map_fd = bpf_find_map(__func__, obj, "reals");

	if (map_fd < 0)

		goto out;

	bpf_map_update_elem(map_fd, &real_num, &real_def, 0);



	err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v4, sizeof(pkt_v4),

				buf, &size, &retval, &duration);

	CHECK(err || retval != 7/*TC_ACT_REDIRECT*/ || size != 54 ||

	      *magic != MAGIC_VAL, "ipv4",

	      "err %d errno %d retval %d size %d magic %x\n",

	      err, errno, retval, size, *magic);



	err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v6, sizeof(pkt_v6),

				buf, &size, &retval, &duration);

	CHECK(err || retval != 7/*TC_ACT_REDIRECT*/ || size != 74 ||

	      *magic != MAGIC_VAL, "ipv6",

	      "err %d errno %d retval %d size %d magic %x\n",

	      err, errno, retval, size, *magic);



	map_fd = bpf_find_map(__func__, obj, "stats");

	if (map_fd < 0)

		goto out;

	bpf_map_lookup_elem(map_fd, &stats_key, stats);

	for (i = 0; i < nr_cpus; i++) {

		bytes += stats[i].bytes;

		pkts += stats[i].pkts;

	}

	if (bytes != MAGIC_BYTES * NUM_ITER * 2 || pkts != NUM_ITER * 2) {

		error_cnt++;

		printf("test_l4lb:FAIL:stats %lld %lld\n", bytes, pkts);

	}

out:

	bpf_object__close(obj);

}



void test_l4lb_all(void)

{

	const char *file1 = "./test_l4lb.o";

	const char *file2 = "./test_l4lb_noinline.o";



	test_l4lb(file1);

	test_l4lb(file2);

}

tools/testing/selftests/bpf/prog_tests/obj_name.c

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// SPDX-License-Identifier: GPL-2.0

#include <test_progs.h>



void test_obj_name(void)

{

	struct {

		const char *name;

		int success;

		int expected_errno;

	} tests[] = {

		{ "", 1, 0 },

		{ "_123456789ABCDE", 1, 0 },

		{ "_123456789ABCDEF", 0, EINVAL },

		{ "_123456789ABCD\n", 0, EINVAL },

	};

	struct bpf_insn prog[] = {

		BPF_ALU64_IMM(BPF_MOV, BPF_REG_0, 0),

		BPF_EXIT_INSN(),

	};

	__u32 duration = 0;

	int i;



	for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) {

		size_t name_len = strlen(tests[i].name) + 1;

		union bpf_attr attr;

		size_t ncopy;

		int fd;



		/* test different attr.prog_name during BPF_PROG_LOAD */

		ncopy = name_len < sizeof(attr.prog_name) ?

			name_len : sizeof(attr.prog_name);

		bzero(&attr, sizeof(attr));

		attr.prog_type = BPF_PROG_TYPE_SCHED_CLS;

		attr.insn_cnt = 2;

		attr.insns = ptr_to_u64(prog);

		attr.license = ptr_to_u64("");

		memcpy(attr.prog_name, tests[i].name, ncopy);



		fd = syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr));

		CHECK((tests[i].success && fd < 0) ||

		      (!tests[i].success && fd != -1) ||

		      (!tests[i].success && errno != tests[i].expected_errno),

		      "check-bpf-prog-name",

		      "fd %d(%d) errno %d(%d)\n",

		       fd, tests[i].success, errno, tests[i].expected_errno);



		if (fd != -1)

			close(fd);



		/* test different attr.map_name during BPF_MAP_CREATE */

		ncopy = name_len < sizeof(attr.map_name) ?

			name_len : sizeof(attr.map_name);

		bzero(&attr, sizeof(attr));

		attr.map_type = BPF_MAP_TYPE_ARRAY;

		attr.key_size = 4;

		attr.value_size = 4;

		attr.max_entries = 1;

		attr.map_flags = 0;

		memcpy(attr.map_name, tests[i].name, ncopy);

		fd = syscall(__NR_bpf, BPF_MAP_CREATE, &attr, sizeof(attr));

		CHECK((tests[i].success && fd < 0) ||

		      (!tests[i].success && fd != -1) ||

		      (!tests[i].success && errno != tests[i].expected_errno),

		      "check-bpf-map-name",

		      "fd %d(%d) errno %d(%d)\n",

		      fd, tests[i].success, errno, tests[i].expected_errno);



		if (fd != -1)

			close(fd);

	}

}

tools/testing/selftests/bpf/prog_tests/prog_run_xattr.c

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// SPDX-License-Identifier: GPL-2.0

#include <test_progs.h>



void test_prog_run_xattr(void)

{

	const char *file = "./test_pkt_access.o";

	struct bpf_object *obj;

	char buf[10];

	int err;

	struct bpf_prog_test_run_attr tattr = {

		.repeat = 1,

		.data_in = &pkt_v4,

		.data_size_in = sizeof(pkt_v4),

		.data_out = buf,

		.data_size_out = 5,

	};



	err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj,

			    &tattr.prog_fd);

	if (CHECK_ATTR(err, "load", "err %d errno %d\n", err, errno))

		return;



	memset(buf, 0, sizeof(buf));



	err = bpf_prog_test_run_xattr(&tattr);

	CHECK_ATTR(err != -1 || errno != ENOSPC || tattr.retval, "run",

	      "err %d errno %d retval %d\n", err, errno, tattr.retval);



	CHECK_ATTR(tattr.data_size_out != sizeof(pkt_v4), "data_size_out",

	      "incorrect output size, want %lu have %u\n",

	      sizeof(pkt_v4), tattr.data_size_out);



	CHECK_ATTR(buf[5] != 0, "overflow",

	      "BPF_PROG_TEST_RUN ignored size hint\n");



	tattr.data_out = NULL;

	tattr.data_size_out = 0;

	errno = 0;



	err = bpf_prog_test_run_xattr(&tattr);

	CHECK_ATTR(err || errno || tattr.retval, "run_no_output",

	      "err %d errno %d retval %d\n", err, errno, tattr.retval);



	tattr.data_size_out = 1;

	err = bpf_prog_test_run_xattr(&tattr);

	CHECK_ATTR(err != -EINVAL, "run_wrong_size_out", "err %d\n", err);



	bpf_object__close(obj);

}