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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2019 Facebook */
#include <test_progs.h>
/* that's kernel internal BPF_MAX_TRAMP_PROGS define */
#define CNT 38
void test_fexit_stress(void)
{
char test_skb[128] = {};
int fexit_fd[CNT] = {};
int link_fd[CNT] = {};
char error[4096];
int err, i, filter_fd;
const struct bpf_insn trace_program[] = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
};
LIBBPF_OPTS(bpf_prog_load_opts, trace_opts,
.expected_attach_type = BPF_TRACE_FEXIT,
.log_buf = error,
.log_size = sizeof(error),
);
const struct bpf_insn skb_program[] = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
};
LIBBPF_OPTS(bpf_prog_load_opts, skb_opts,
.log_buf = error,
.log_size = sizeof(error),
);
LIBBPF_OPTS(bpf_test_run_opts, topts,
.data_in = test_skb,
.data_size_in = sizeof(test_skb),
.repeat = 1,
);
err = libbpf_find_vmlinux_btf_id("bpf_fentry_test1",
trace_opts.expected_attach_type);
if (!ASSERT_GT(err, 0, "find_vmlinux_btf_id"))
goto out;
trace_opts.attach_btf_id = err;
for (i = 0; i < CNT; i++) {
fexit_fd[i] = bpf_prog_load(BPF_PROG_TYPE_TRACING, NULL, "GPL",
trace_program,
sizeof(trace_program) / sizeof(struct bpf_insn),
&trace_opts);
if (!ASSERT_GE(fexit_fd[i], 0, "fexit load"))
goto out;
link_fd[i] = bpf_raw_tracepoint_open(NULL, fexit_fd[i]);
if (!ASSERT_GE(link_fd[i], 0, "fexit attach"))
goto out;
}
filter_fd = bpf_prog_load(BPF_PROG_TYPE_SOCKET_FILTER, NULL, "GPL",
skb_program, sizeof(skb_program) / sizeof(struct bpf_insn),
&skb_opts);
if (!ASSERT_GE(filter_fd, 0, "test_program_loaded"))
goto out;
err = bpf_prog_test_run_opts(filter_fd, &topts);
close(filter_fd);
CHECK_FAIL(err);
out:
for (i = 0; i < CNT; i++) {
if (link_fd[i])
close(link_fd[i]);
if (fexit_fd[i])
close(fexit_fd[i]);
}
}
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