forked from Qortal/Brooklyn
78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
// 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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/* that's kernel internal BPF_MAX_TRAMP_PROGS define */
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#define CNT 38
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void test_fexit_stress(void)
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{
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char test_skb[128] = {};
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int fexit_fd[CNT] = {};
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int link_fd[CNT] = {};
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__u32 duration = 0;
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char error[4096];
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__u32 prog_ret;
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int err, i, filter_fd;
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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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.log_buf = error,
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.log_size = sizeof(error),
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);
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const struct bpf_insn skb_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, skb_opts,
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.log_buf = error,
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.log_size = sizeof(error),
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);
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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 (CHECK(err <= 0, "find_vmlinux_btf_id", "failed: %d\n", err))
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goto out;
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trace_opts.attach_btf_id = err;
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for (i = 0; i < CNT; 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 (CHECK(fexit_fd[i] < 0, "fexit loaded",
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"failed: %d errno %d\n", fexit_fd[i], errno))
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goto out;
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link_fd[i] = bpf_raw_tracepoint_open(NULL, fexit_fd[i]);
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if (CHECK(link_fd[i] < 0, "fexit attach failed",
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"prog %d failed: %d err %d\n", i, link_fd[i], errno))
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goto out;
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}
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filter_fd = bpf_prog_load(BPF_PROG_TYPE_SOCKET_FILTER, NULL, "GPL",
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skb_program, sizeof(skb_program) / sizeof(struct bpf_insn),
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&skb_opts);
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if (CHECK(filter_fd < 0, "test_program_loaded", "failed: %d errno %d\n",
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filter_fd, errno))
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goto out;
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err = bpf_prog_test_run(filter_fd, 1, test_skb, sizeof(test_skb), 0,
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0, &prog_ret, 0);
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close(filter_fd);
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CHECK_FAIL(err);
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out:
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for (i = 0; i < CNT; 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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}
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