62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2020 Google LLC.
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*/
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#include <test_progs.h>
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#include "modify_return.skel.h"
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#define LOWER(x) ((x) & 0xffff)
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#define UPPER(x) ((x) >> 16)
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static void run_test(__u32 input_retval, __u16 want_side_effect, __s16 want_ret)
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{
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struct modify_return *skel = NULL;
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int err, prog_fd;
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__u16 side_effect;
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__s16 ret;
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LIBBPF_OPTS(bpf_test_run_opts, topts);
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skel = modify_return__open_and_load();
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if (!ASSERT_OK_PTR(skel, "skel_load"))
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goto cleanup;
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err = modify_return__attach(skel);
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if (!ASSERT_OK(err, "modify_return__attach failed"))
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goto cleanup;
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skel->bss->input_retval = input_retval;
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prog_fd = bpf_program__fd(skel->progs.fmod_ret_test);
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err = bpf_prog_test_run_opts(prog_fd, &topts);
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ASSERT_OK(err, "test_run");
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side_effect = UPPER(topts.retval);
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ret = LOWER(topts.retval);
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ASSERT_EQ(ret, want_ret, "test_run ret");
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ASSERT_EQ(side_effect, want_side_effect, "modify_return side_effect");
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ASSERT_EQ(skel->bss->fentry_result, 1, "modify_return fentry_result");
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ASSERT_EQ(skel->bss->fexit_result, 1, "modify_return fexit_result");
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ASSERT_EQ(skel->bss->fmod_ret_result, 1, "modify_return fmod_ret_result");
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ASSERT_EQ(skel->bss->fentry_result2, 1, "modify_return fentry_result2");
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ASSERT_EQ(skel->bss->fexit_result2, 1, "modify_return fexit_result2");
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ASSERT_EQ(skel->bss->fmod_ret_result2, 1, "modify_return fmod_ret_result2");
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cleanup:
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modify_return__destroy(skel);
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}
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/* TODO: conflict with get_func_ip_test */
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void serial_test_modify_return(void)
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{
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run_test(0 /* input_retval */,
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2 /* want_side_effect */,
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33 /* want_ret */);
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run_test(-EINVAL /* input_retval */,
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0 /* want_side_effect */,
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-EINVAL * 2 /* want_ret */);
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}
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