afef88e655
BPF object files are, in a way, the final artifact produced as part of the ahead-of-time compilation process. That makes them somewhat special compared to "regular" object files, which are a intermediate build artifacts that can typically be removed safely. As such, it can make sense to name them differently to make it easier to spot this difference at a glance. Among others, libbpf-bootstrap [0] has established the extension .bpf.o for BPF object files. It seems reasonable to follow this example and establish the same denomination for selftest build artifacts. To that end, this change adjusts the corresponding part of the build system and the test programs loading BPF object files to work with .bpf.o files. [0] https://github.com/libbpf/libbpf-bootstrap Suggested-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Müller <deso@posteo.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20220901222253.1199242-1-deso@posteo.net
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <test_progs.h>
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#include <network_helpers.h>
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static void *spin_lock_thread(void *arg)
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{
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int err, prog_fd = *(u32 *) arg;
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LIBBPF_OPTS(bpf_test_run_opts, topts,
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.data_in = &pkt_v4,
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.data_size_in = sizeof(pkt_v4),
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.repeat = 10000,
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);
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err = bpf_prog_test_run_opts(prog_fd, &topts);
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ASSERT_OK(err, "test_run_opts err");
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ASSERT_OK(topts.retval, "test_run_opts retval");
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pthread_exit(arg);
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}
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static void *parallel_map_access(void *arg)
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{
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int err, map_fd = *(u32 *) arg;
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int vars[17], i, j, rnd, key = 0;
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for (i = 0; i < 10000; i++) {
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err = bpf_map_lookup_elem_flags(map_fd, &key, vars, BPF_F_LOCK);
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if (CHECK_FAIL(err)) {
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printf("lookup failed\n");
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goto out;
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}
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if (CHECK_FAIL(vars[0] != 0)) {
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printf("lookup #%d var[0]=%d\n", i, vars[0]);
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goto out;
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}
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rnd = vars[1];
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for (j = 2; j < 17; j++) {
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if (vars[j] == rnd)
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continue;
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printf("lookup #%d var[1]=%d var[%d]=%d\n",
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i, rnd, j, vars[j]);
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CHECK_FAIL(vars[j] != rnd);
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goto out;
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}
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}
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out:
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pthread_exit(arg);
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}
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void test_map_lock(void)
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{
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const char *file = "./test_map_lock.bpf.o";
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int prog_fd, map_fd[2], vars[17] = {};
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pthread_t thread_id[6];
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struct bpf_object *obj = NULL;
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int err = 0, key = 0, i;
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void *ret;
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err = bpf_prog_test_load(file, BPF_PROG_TYPE_CGROUP_SKB, &obj, &prog_fd);
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if (CHECK_FAIL(err)) {
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printf("test_map_lock:bpf_prog_test_load errno %d\n", errno);
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goto close_prog;
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}
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map_fd[0] = bpf_find_map(__func__, obj, "hash_map");
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if (CHECK_FAIL(map_fd[0] < 0))
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goto close_prog;
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map_fd[1] = bpf_find_map(__func__, obj, "array_map");
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if (CHECK_FAIL(map_fd[1] < 0))
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goto close_prog;
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bpf_map_update_elem(map_fd[0], &key, vars, BPF_F_LOCK);
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for (i = 0; i < 4; i++)
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if (CHECK_FAIL(pthread_create(&thread_id[i], NULL,
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&spin_lock_thread, &prog_fd)))
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goto close_prog;
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for (i = 4; i < 6; i++)
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if (CHECK_FAIL(pthread_create(&thread_id[i], NULL,
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¶llel_map_access,
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&map_fd[i - 4])))
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goto close_prog;
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for (i = 0; i < 4; i++)
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if (CHECK_FAIL(pthread_join(thread_id[i], &ret) ||
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ret != (void *)&prog_fd))
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goto close_prog;
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for (i = 4; i < 6; i++)
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if (CHECK_FAIL(pthread_join(thread_id[i], &ret) ||
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ret != (void *)&map_fd[i - 4]))
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goto close_prog;
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close_prog:
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bpf_object__close(obj);
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}
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