60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2019 Facebook */
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#include <test_progs.h>
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void serial_test_fexit_stress(void)
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{
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int bpf_max_tramp_links, err, i;
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int *fd, *fexit_fd, *link_fd;
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bpf_max_tramp_links = get_bpf_max_tramp_links();
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if (!ASSERT_GE(bpf_max_tramp_links, 1, "bpf_max_tramp_links"))
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return;
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fd = calloc(bpf_max_tramp_links * 2, sizeof(*fd));
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if (!ASSERT_OK_PTR(fd, "fd"))
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return;
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fexit_fd = fd;
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link_fd = fd + bpf_max_tramp_links;
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const struct bpf_insn trace_program[] = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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};
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LIBBPF_OPTS(bpf_prog_load_opts, trace_opts,
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.expected_attach_type = BPF_TRACE_FEXIT,
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);
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LIBBPF_OPTS(bpf_test_run_opts, topts);
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err = libbpf_find_vmlinux_btf_id("bpf_fentry_test1",
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trace_opts.expected_attach_type);
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if (!ASSERT_GT(err, 0, "find_vmlinux_btf_id"))
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goto out;
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trace_opts.attach_btf_id = err;
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for (i = 0; i < bpf_max_tramp_links; i++) {
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fexit_fd[i] = bpf_prog_load(BPF_PROG_TYPE_TRACING, NULL, "GPL",
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trace_program,
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sizeof(trace_program) / sizeof(struct bpf_insn),
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&trace_opts);
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if (!ASSERT_GE(fexit_fd[i], 0, "fexit load"))
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goto out;
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link_fd[i] = bpf_link_create(fexit_fd[i], 0, BPF_TRACE_FEXIT, NULL);
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if (!ASSERT_GE(link_fd[i], 0, "fexit attach"))
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goto out;
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}
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err = bpf_prog_test_run_opts(fexit_fd[0], &topts);
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ASSERT_OK(err, "bpf_prog_test_run_opts");
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out:
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for (i = 0; i < bpf_max_tramp_links; i++) {
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if (link_fd[i])
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close(link_fd[i]);
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if (fexit_fd[i])
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close(fexit_fd[i]);
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}
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free(fd);
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}
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