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Message-ID: <CADxym3YSgEsmNQNiFFZsi=2F3np-zJFFCc3dHMrR5+JoM2353w@mail.gmail.com>
Date: Wed, 5 Jul 2023 09:47:16 +0800
From: Menglong Dong <menglong8.dong@...il.com>
To: daniel@...earbox.net, yhs@...a.com
Cc: ast@...nel.org, andrii@...nel.org, alexei.starovoitov@...il.com,
martin.lau@...ux.dev, song@...nel.org, yhs@...com,
john.fastabend@...il.com, kpsingh@...nel.org, sdf@...gle.com,
haoluo@...gle.com, jolsa@...nel.org, bpf@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
Menglong Dong <imagedong@...cent.com>
Subject: Re: [PATCH bpf-next v8 3/3] selftests/bpf: add testcase for TRACING
with 6+ arguments
On Tue, Jun 27, 2023 at 7:54 PM <menglong8.dong@...il.com> wrote:
>
> From: Menglong Dong <imagedong@...cent.com>
>
> Add fentry_many_args.c and fexit_many_args.c to test the fentry/fexit
> with 7/11 arguments. As this feature is not supported by arm64 yet, we
> disable these testcases for arm64 in DENYLIST.aarch64. We can combine
> them with fentry_test.c/fexit_test.c when arm64 is supported too.
>
> Correspondingly, add bpf_testmod_fentry_test7() and
> bpf_testmod_fentry_test11() to bpf_testmod.c
>
> Meanwhile, add bpf_modify_return_test2() to test_run.c to test the
> MODIFY_RETURN with 7 arguments.
>
> Add bpf_testmod_test_struct_arg_7/bpf_testmod_test_struct_arg_7 in
> bpf_testmod.c to test the struct in the arguments.
>
> And the testcases passed on x86_64:
>
> ./test_progs -t fexit
> Summary: 5/14 PASSED, 0 SKIPPED, 0 FAILED
>
> ./test_progs -t fentry
> Summary: 3/2 PASSED, 0 SKIPPED, 0 FAILED
>
> ./test_progs -t modify_return
> Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED
>
> ./test_progs -t tracing_struct
> Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED
>
> Signed-off-by: Menglong Dong <imagedong@...cent.com>
> Acked-by: Yonghong Song <yhs@...com>
> ---
> v7:
> - split the testcases, and add fentry_many_args/fexit_many_args to
> DENYLIST.aarch64
> v6:
> - add testcases to tracing_struct.c instead of fentry_test.c and
> fexit_test.c
> v5:
> - add testcases for MODIFY_RETURN
> v4:
> - use different type for args in bpf_testmod_fentry_test{7,12}
> - add testcase for grabage values in ctx
> v3:
> - move bpf_fentry_test{7,12} to bpf_testmod.c and rename them to
> bpf_testmod_fentry_test{7,12} meanwhile
> - get return value by bpf_get_func_ret() in
> "fexit/bpf_testmod_fentry_test12", as we don't change ___bpf_ctx_cast()
> in this version
> ---
> net/bpf/test_run.c | 23 ++++++--
> tools/testing/selftests/bpf/DENYLIST.aarch64 | 2 +
> .../selftests/bpf/bpf_testmod/bpf_testmod.c | 49 ++++++++++++++++-
> .../selftests/bpf/prog_tests/fentry_test.c | 43 +++++++++++++--
> .../selftests/bpf/prog_tests/fexit_test.c | 43 +++++++++++++--
> .../selftests/bpf/prog_tests/modify_return.c | 20 ++++++-
> .../selftests/bpf/prog_tests/tracing_struct.c | 19 +++++++
> .../selftests/bpf/progs/fentry_many_args.c | 39 ++++++++++++++
> .../selftests/bpf/progs/fexit_many_args.c | 40 ++++++++++++++
> .../selftests/bpf/progs/modify_return.c | 40 ++++++++++++++
> .../selftests/bpf/progs/tracing_struct.c | 54 +++++++++++++++++++
> 11 files changed, 358 insertions(+), 14 deletions(-)
> create mode 100644 tools/testing/selftests/bpf/progs/fentry_many_args.c
> create mode 100644 tools/testing/selftests/bpf/progs/fexit_many_args.c
>
> diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
> index 2321bd2f9964..df58e8bf5e07 100644
> --- a/net/bpf/test_run.c
> +++ b/net/bpf/test_run.c
> @@ -561,6 +561,13 @@ __bpf_kfunc int bpf_modify_return_test(int a, int *b)
> return a + *b;
> }
>
> +__bpf_kfunc int bpf_modify_return_test2(int a, int *b, short c, int d,
> + void *e, char f, int g)
> +{
> + *b += 1;
> + return a + *b + c + d + (long)e + f + g;
> +}
> +
> int noinline bpf_fentry_shadow_test(int a)
> {
> return a + 1;
> @@ -596,9 +603,13 @@ __diag_pop();
>
> BTF_SET8_START(bpf_test_modify_return_ids)
> BTF_ID_FLAGS(func, bpf_modify_return_test)
> +BTF_ID_FLAGS(func, bpf_modify_return_test2)
> BTF_ID_FLAGS(func, bpf_fentry_test1, KF_SLEEPABLE)
> BTF_SET8_END(bpf_test_modify_return_ids)
>
> +BTF_ID_LIST(bpf_modify_return_test_id)
> +BTF_ID(func, bpf_modify_return_test)
> +
> static const struct btf_kfunc_id_set bpf_test_modify_return_set = {
> .owner = THIS_MODULE,
> .set = &bpf_test_modify_return_ids,
> @@ -661,9 +672,15 @@ int bpf_prog_test_run_tracing(struct bpf_prog *prog,
> goto out;
> break;
> case BPF_MODIFY_RETURN:
> - ret = bpf_modify_return_test(1, &b);
> - if (b != 2)
> - side_effect = 1;
> + if (prog->aux->attach_btf_id == *bpf_modify_return_test_id) {
> + ret = bpf_modify_return_test(1, &b);
> + if (b != 2)
> + side_effect = 1;
> + } else {
> + ret = bpf_modify_return_test2(1, &b, 3, 4, (void *)5, 6, 7);
> + if (b != 2)
> + side_effect = 1;
> + }
> break;
> default:
> goto out;
> diff --git a/tools/testing/selftests/bpf/DENYLIST.aarch64 b/tools/testing/selftests/bpf/DENYLIST.aarch64
> index 08adc805878b..3b61e8b35d62 100644
> --- a/tools/testing/selftests/bpf/DENYLIST.aarch64
> +++ b/tools/testing/selftests/bpf/DENYLIST.aarch64
> @@ -10,3 +10,5 @@ kprobe_multi_test/link_api_addrs # link_fd unexpected link_fd: a
> kprobe_multi_test/link_api_syms # link_fd unexpected link_fd: actual -95 < expected 0
> kprobe_multi_test/skel_api # libbpf: failed to load BPF skeleton 'kprobe_multi': -3
> module_attach # prog 'kprobe_multi': failed to auto-attach: -95
> +fentry_test/fentry_many_args # fentry_many_args:FAIL:fentry_many_args_attach unexpected error: -524
> +fexit_test/fexit_many_args # fexit_many_args:FAIL:fexit_many_args_attach unexpected error: -524
> diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
> index aaf6ef1201c7..a6f991b56345 100644
> --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
> +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
> @@ -34,6 +34,11 @@ struct bpf_testmod_struct_arg_3 {
> int b[];
> };
>
> +struct bpf_testmod_struct_arg_4 {
> + u64 a;
> + int b;
> +};
> +
> __diag_push();
> __diag_ignore_all("-Wmissing-prototypes",
> "Global functions as their definitions will be in bpf_testmod.ko BTF");
> @@ -75,6 +80,24 @@ bpf_testmod_test_struct_arg_6(struct bpf_testmod_struct_arg_3 *a) {
> return bpf_testmod_test_struct_arg_result;
> }
>
> +noinline int
> +bpf_testmod_test_struct_arg_7(u64 a, void *b, short c, int d, void *e,
> + struct bpf_testmod_struct_arg_4 f)
> +{
> + bpf_testmod_test_struct_arg_result = a + (long)b + c + d +
> + (long)e + f.a + f.b;
> + return bpf_testmod_test_struct_arg_result;
> +}
> +
> +noinline int
> +bpf_testmod_test_struct_arg_8(u64 a, void *b, short c, int d, void *e,
> + struct bpf_testmod_struct_arg_4 f, int g)
> +{
> + bpf_testmod_test_struct_arg_result = a + (long)b + c + d +
> + (long)e + f.a + f.b + g;
> + return bpf_testmod_test_struct_arg_result;
> +}
> +
> __bpf_kfunc void
> bpf_testmod_test_mod_kfunc(int i)
> {
> @@ -191,6 +214,20 @@ noinline int bpf_testmod_fentry_test3(char a, int b, u64 c)
> return a + b + c;
> }
>
> +noinline int bpf_testmod_fentry_test7(u64 a, void *b, short c, int d,
> + void *e, char f, int g)
> +{
> + return a + (long)b + c + d + (long)e + f + g;
> +}
> +
> +noinline int bpf_testmod_fentry_test11(u64 a, void *b, short c, int d,
> + void *e, char f, int g,
> + unsigned int h, long i, __u64 j,
> + unsigned long k)
> +{
> + return a + (long)b + c + d + (long)e + f + g + h + i + j + k;
> +}
> +
> int bpf_testmod_fentry_ok;
>
> noinline ssize_t
> @@ -206,6 +243,7 @@ bpf_testmod_test_read(struct file *file, struct kobject *kobj,
> struct bpf_testmod_struct_arg_1 struct_arg1 = {10};
> struct bpf_testmod_struct_arg_2 struct_arg2 = {2, 3};
> struct bpf_testmod_struct_arg_3 *struct_arg3;
> + struct bpf_testmod_struct_arg_4 struct_arg4 = {21, 22};
> int i = 1;
>
> while (bpf_testmod_return_ptr(i))
> @@ -216,6 +254,11 @@ bpf_testmod_test_read(struct file *file, struct kobject *kobj,
> (void)bpf_testmod_test_struct_arg_3(1, 4, struct_arg2);
> (void)bpf_testmod_test_struct_arg_4(struct_arg1, 1, 2, 3, struct_arg2);
> (void)bpf_testmod_test_struct_arg_5();
> + (void)bpf_testmod_test_struct_arg_7(16, (void *)17, 18, 19,
> + (void *)20, struct_arg4);
> + (void)bpf_testmod_test_struct_arg_8(16, (void *)17, 18, 19,
> + (void *)20, struct_arg4, 23);
> +
>
> struct_arg3 = kmalloc((sizeof(struct bpf_testmod_struct_arg_3) +
> sizeof(int)), GFP_KERNEL);
> @@ -243,7 +286,11 @@ bpf_testmod_test_read(struct file *file, struct kobject *kobj,
>
> if (bpf_testmod_fentry_test1(1) != 2 ||
> bpf_testmod_fentry_test2(2, 3) != 5 ||
> - bpf_testmod_fentry_test3(4, 5, 6) != 15)
> + bpf_testmod_fentry_test3(4, 5, 6) != 15 ||
> + bpf_testmod_fentry_test7(16, (void *)17, 18, 19, (void *)20,
> + 21, 22) != 133 ||
> + bpf_testmod_fentry_test11(16, (void *)17, 18, 19, (void *)20,
> + 21, 22, 23, 24, 25, 26) != 231)
> goto out;
>
> bpf_testmod_fentry_ok = 1;
> diff --git a/tools/testing/selftests/bpf/prog_tests/fentry_test.c b/tools/testing/selftests/bpf/prog_tests/fentry_test.c
> index c0d1d61d5f66..aee1bc77a17f 100644
> --- a/tools/testing/selftests/bpf/prog_tests/fentry_test.c
> +++ b/tools/testing/selftests/bpf/prog_tests/fentry_test.c
> @@ -2,8 +2,9 @@
> /* Copyright (c) 2019 Facebook */
> #include <test_progs.h>
> #include "fentry_test.lskel.h"
> +#include "fentry_many_args.skel.h"
>
> -static int fentry_test(struct fentry_test_lskel *fentry_skel)
> +static int fentry_test_common(struct fentry_test_lskel *fentry_skel)
> {
> int err, prog_fd, i;
> int link_fd;
> @@ -37,7 +38,7 @@ static int fentry_test(struct fentry_test_lskel *fentry_skel)
> return 0;
> }
>
> -void test_fentry_test(void)
> +static void fentry_test(void)
> {
> struct fentry_test_lskel *fentry_skel = NULL;
> int err;
> @@ -46,13 +47,47 @@ void test_fentry_test(void)
> if (!ASSERT_OK_PTR(fentry_skel, "fentry_skel_load"))
> goto cleanup;
>
> - err = fentry_test(fentry_skel);
> + err = fentry_test_common(fentry_skel);
> if (!ASSERT_OK(err, "fentry_first_attach"))
> goto cleanup;
>
> - err = fentry_test(fentry_skel);
> + err = fentry_test_common(fentry_skel);
> ASSERT_OK(err, "fentry_second_attach");
>
> cleanup:
> fentry_test_lskel__destroy(fentry_skel);
> }
> +
> +static void fentry_many_args(void)
> +{
> + struct fentry_many_args *fentry_skel = NULL;
> + int err;
> +
> + fentry_skel = fentry_many_args__open_and_load();
> + if (!ASSERT_OK_PTR(fentry_skel, "fentry_many_args_skel_load"))
> + goto cleanup;
> +
> + err = fentry_many_args__attach(fentry_skel);
> + if (!ASSERT_OK(err, "fentry_many_args_attach"))
> + goto cleanup;
> +
> + ASSERT_OK(trigger_module_test_read(1), "trigger_read");
> +
> + ASSERT_EQ(fentry_skel->bss->test1_result, 1,
> + "fentry_many_args_result1");
> + ASSERT_EQ(fentry_skel->bss->test2_result, 1,
> + "fentry_many_args_result2");
> + ASSERT_EQ(fentry_skel->bss->test3_result, 1,
> + "fentry_many_args_result3");
> +
> +cleanup:
> + fentry_many_args__destroy(fentry_skel);
> +}
> +
Hello,
Is there anything else that needs to be improved in this series?
Is it about the ugly function naming of "fentry_many_args"?
Sorry for the bother, but it has been pending for a while :)
Thanks!
Menglong Dong
> +void test_fentry_test(void)
> +{
> + if (test__start_subtest("fentry"))
> + fentry_test();
> + if (test__start_subtest("fentry_many_args"))
> + fentry_many_args();
> +}
> diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_test.c b/tools/testing/selftests/bpf/prog_tests/fexit_test.c
> index 101b7343036b..1c13007e37dd 100644
> --- a/tools/testing/selftests/bpf/prog_tests/fexit_test.c
> +++ b/tools/testing/selftests/bpf/prog_tests/fexit_test.c
> @@ -2,8 +2,9 @@
> /* Copyright (c) 2019 Facebook */
> #include <test_progs.h>
> #include "fexit_test.lskel.h"
> +#include "fexit_many_args.skel.h"
>
> -static int fexit_test(struct fexit_test_lskel *fexit_skel)
> +static int fexit_test_common(struct fexit_test_lskel *fexit_skel)
> {
> int err, prog_fd, i;
> int link_fd;
> @@ -37,7 +38,7 @@ static int fexit_test(struct fexit_test_lskel *fexit_skel)
> return 0;
> }
>
> -void test_fexit_test(void)
> +static void fexit_test(void)
> {
> struct fexit_test_lskel *fexit_skel = NULL;
> int err;
> @@ -46,13 +47,47 @@ void test_fexit_test(void)
> if (!ASSERT_OK_PTR(fexit_skel, "fexit_skel_load"))
> goto cleanup;
>
> - err = fexit_test(fexit_skel);
> + err = fexit_test_common(fexit_skel);
> if (!ASSERT_OK(err, "fexit_first_attach"))
> goto cleanup;
>
> - err = fexit_test(fexit_skel);
> + err = fexit_test_common(fexit_skel);
> ASSERT_OK(err, "fexit_second_attach");
>
> cleanup:
> fexit_test_lskel__destroy(fexit_skel);
> }
> +
> +static void fexit_many_args(void)
> +{
> + struct fexit_many_args *fexit_skel = NULL;
> + int err;
> +
> + fexit_skel = fexit_many_args__open_and_load();
> + if (!ASSERT_OK_PTR(fexit_skel, "fexit_many_args_skel_load"))
> + goto cleanup;
> +
> + err = fexit_many_args__attach(fexit_skel);
> + if (!ASSERT_OK(err, "fexit_many_args_attach"))
> + goto cleanup;
> +
> + ASSERT_OK(trigger_module_test_read(1), "trigger_read");
> +
> + ASSERT_EQ(fexit_skel->bss->test1_result, 1,
> + "fexit_many_args_result1");
> + ASSERT_EQ(fexit_skel->bss->test2_result, 1,
> + "fexit_many_args_result2");
> + ASSERT_EQ(fexit_skel->bss->test3_result, 1,
> + "fexit_many_args_result3");
> +
> +cleanup:
> + fexit_many_args__destroy(fexit_skel);
> +}
> +
> +void test_fexit_test(void)
> +{
> + if (test__start_subtest("fexit"))
> + fexit_test();
> + if (test__start_subtest("fexit_many_args"))
> + fexit_many_args();
> +}
> diff --git a/tools/testing/selftests/bpf/prog_tests/modify_return.c b/tools/testing/selftests/bpf/prog_tests/modify_return.c
> index 5d9955af6247..93febb6d81ef 100644
> --- a/tools/testing/selftests/bpf/prog_tests/modify_return.c
> +++ b/tools/testing/selftests/bpf/prog_tests/modify_return.c
> @@ -11,7 +11,8 @@
> #define UPPER(x) ((x) >> 16)
>
>
> -static void run_test(__u32 input_retval, __u16 want_side_effect, __s16 want_ret)
> +static void run_test(__u32 input_retval, __u16 want_side_effect,
> + __s16 want_ret, __s16 want_ret2)
> {
> struct modify_return *skel = NULL;
> int err, prog_fd;
> @@ -41,6 +42,19 @@ static void run_test(__u32 input_retval, __u16 want_side_effect, __s16 want_ret)
> ASSERT_EQ(skel->bss->fexit_result, 1, "modify_return fexit_result");
> ASSERT_EQ(skel->bss->fmod_ret_result, 1, "modify_return fmod_ret_result");
>
> + prog_fd = bpf_program__fd(skel->progs.fmod_ret_test2);
> + err = bpf_prog_test_run_opts(prog_fd, &topts);
> + ASSERT_OK(err, "test_run");
> +
> + side_effect = UPPER(topts.retval);
> + ret = LOWER(topts.retval);
> +
> + ASSERT_EQ(ret, want_ret2, "test_run ret2");
> + ASSERT_EQ(side_effect, want_side_effect, "modify_return side_effect2");
> + ASSERT_EQ(skel->bss->fentry_result2, 1, "modify_return fentry_result2");
> + ASSERT_EQ(skel->bss->fexit_result2, 1, "modify_return fexit_result2");
> + ASSERT_EQ(skel->bss->fmod_ret_result2, 1, "modify_return fmod_ret_result2");
> +
> cleanup:
> modify_return__destroy(skel);
> }
> @@ -50,8 +64,10 @@ void serial_test_modify_return(void)
> {
> run_test(0 /* input_retval */,
> 1 /* want_side_effect */,
> - 4 /* want_ret */);
> + 4 /* want_ret */,
> + 29 /* want_ret */);
> run_test(-EINVAL /* input_retval */,
> 0 /* want_side_effect */,
> + -EINVAL /* want_ret */,
> -EINVAL /* want_ret */);
> }
> diff --git a/tools/testing/selftests/bpf/prog_tests/tracing_struct.c b/tools/testing/selftests/bpf/prog_tests/tracing_struct.c
> index 1c75a32186d6..fe0fb0c9849a 100644
> --- a/tools/testing/selftests/bpf/prog_tests/tracing_struct.c
> +++ b/tools/testing/selftests/bpf/prog_tests/tracing_struct.c
> @@ -55,6 +55,25 @@ static void test_fentry(void)
>
> ASSERT_EQ(skel->bss->t6, 1, "t6 ret");
>
> + ASSERT_EQ(skel->bss->t7_a, 16, "t7:a");
> + ASSERT_EQ(skel->bss->t7_b, 17, "t7:b");
> + ASSERT_EQ(skel->bss->t7_c, 18, "t7:c");
> + ASSERT_EQ(skel->bss->t7_d, 19, "t7:d");
> + ASSERT_EQ(skel->bss->t7_e, 20, "t7:e");
> + ASSERT_EQ(skel->bss->t7_f_a, 21, "t7:f.a");
> + ASSERT_EQ(skel->bss->t7_f_b, 22, "t7:f.b");
> + ASSERT_EQ(skel->bss->t7_ret, 133, "t7 ret");
> +
> + ASSERT_EQ(skel->bss->t8_a, 16, "t8:a");
> + ASSERT_EQ(skel->bss->t8_b, 17, "t8:b");
> + ASSERT_EQ(skel->bss->t8_c, 18, "t8:c");
> + ASSERT_EQ(skel->bss->t8_d, 19, "t8:d");
> + ASSERT_EQ(skel->bss->t8_e, 20, "t8:e");
> + ASSERT_EQ(skel->bss->t8_f_a, 21, "t8:f.a");
> + ASSERT_EQ(skel->bss->t8_f_b, 22, "t8:f.b");
> + ASSERT_EQ(skel->bss->t8_g, 23, "t8:g");
> + ASSERT_EQ(skel->bss->t8_ret, 156, "t8 ret");
> +
> tracing_struct__detach(skel);
> destroy_skel:
> tracing_struct__destroy(skel);
> diff --git a/tools/testing/selftests/bpf/progs/fentry_many_args.c b/tools/testing/selftests/bpf/progs/fentry_many_args.c
> new file mode 100644
> index 000000000000..b61bb92fee2c
> --- /dev/null
> +++ b/tools/testing/selftests/bpf/progs/fentry_many_args.c
> @@ -0,0 +1,39 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright (c) 2023 Tencent */
> +#include <linux/bpf.h>
> +#include <bpf/bpf_helpers.h>
> +#include <bpf/bpf_tracing.h>
> +
> +char _license[] SEC("license") = "GPL";
> +
> +__u64 test1_result = 0;
> +SEC("fentry/bpf_testmod_fentry_test7")
> +int BPF_PROG(test1, __u64 a, void *b, short c, int d, void *e, char f,
> + int g)
> +{
> + test1_result = a == 16 && b == (void *)17 && c == 18 && d == 19 &&
> + e == (void *)20 && f == 21 && g == 22;
> + return 0;
> +}
> +
> +__u64 test2_result = 0;
> +SEC("fentry/bpf_testmod_fentry_test11")
> +int BPF_PROG(test2, __u64 a, void *b, short c, int d, void *e, char f,
> + int g, unsigned int h, long i, __u64 j, unsigned long k)
> +{
> + test2_result = a == 16 && b == (void *)17 && c == 18 && d == 19 &&
> + e == (void *)20 && f == 21 && g == 22 && h == 23 &&
> + i == 24 && j == 25 && k == 26;
> + return 0;
> +}
> +
> +__u64 test3_result = 0;
> +SEC("fentry/bpf_testmod_fentry_test11")
> +int BPF_PROG(test3, __u64 a, __u64 b, __u64 c, __u64 d, __u64 e, __u64 f,
> + __u64 g, __u64 h, __u64 i, __u64 j, __u64 k)
> +{
> + test3_result = a == 16 && b == 17 && c == 18 && d == 19 &&
> + e == 20 && f == 21 && g == 22 && h == 23 &&
> + i == 24 && j == 25 && k == 26;
> + return 0;
> +}
> diff --git a/tools/testing/selftests/bpf/progs/fexit_many_args.c b/tools/testing/selftests/bpf/progs/fexit_many_args.c
> new file mode 100644
> index 000000000000..53b335c2dafb
> --- /dev/null
> +++ b/tools/testing/selftests/bpf/progs/fexit_many_args.c
> @@ -0,0 +1,40 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright (c) 2023 Tencent */
> +#include <linux/bpf.h>
> +#include <bpf/bpf_helpers.h>
> +#include <bpf/bpf_tracing.h>
> +
> +char _license[] SEC("license") = "GPL";
> +
> +__u64 test1_result = 0;
> +SEC("fexit/bpf_testmod_fentry_test7")
> +int BPF_PROG(test1, __u64 a, void *b, short c, int d, void *e, char f,
> + int g, int ret)
> +{
> + test1_result = a == 16 && b == (void *)17 && c == 18 && d == 19 &&
> + e == (void *)20 && f == 21 && g == 22 && ret == 133;
> + return 0;
> +}
> +
> +__u64 test2_result = 0;
> +SEC("fexit/bpf_testmod_fentry_test11")
> +int BPF_PROG(test2, __u64 a, void *b, short c, int d, void *e, char f,
> + int g, unsigned int h, long i, __u64 j, unsigned long k,
> + int ret)
> +{
> + test2_result = a == 16 && b == (void *)17 && c == 18 && d == 19 &&
> + e == (void *)20 && f == 21 && g == 22 && h == 23 &&
> + i == 24 && j == 25 && k == 26 && ret == 231;
> + return 0;
> +}
> +
> +__u64 test3_result = 0;
> +SEC("fexit/bpf_testmod_fentry_test11")
> +int BPF_PROG(test3, __u64 a, __u64 b, __u64 c, __u64 d, __u64 e, __u64 f,
> + __u64 g, __u64 h, __u64 i, __u64 j, __u64 k, __u64 ret)
> +{
> + test3_result = a == 16 && b == 17 && c == 18 && d == 19 &&
> + e == 20 && f == 21 && g == 22 && h == 23 &&
> + i == 24 && j == 25 && k == 26 && ret == 231;
> + return 0;
> +}
> diff --git a/tools/testing/selftests/bpf/progs/modify_return.c b/tools/testing/selftests/bpf/progs/modify_return.c
> index 8b7466a15c6b..3376d4849f58 100644
> --- a/tools/testing/selftests/bpf/progs/modify_return.c
> +++ b/tools/testing/selftests/bpf/progs/modify_return.c
> @@ -47,3 +47,43 @@ int BPF_PROG(fexit_test, int a, __u64 b, int ret)
>
> return 0;
> }
> +
> +static int sequence2;
> +
> +__u64 fentry_result2 = 0;
> +SEC("fentry/bpf_modify_return_test2")
> +int BPF_PROG(fentry_test2, int a, int *b, short c, int d, void *e, char f,
> + int g)
> +{
> + sequence2++;
> + fentry_result2 = (sequence2 == 1);
> + return 0;
> +}
> +
> +__u64 fmod_ret_result2 = 0;
> +SEC("fmod_ret/bpf_modify_return_test2")
> +int BPF_PROG(fmod_ret_test2, int a, int *b, short c, int d, void *e, char f,
> + int g, int ret)
> +{
> + sequence2++;
> + /* This is the first fmod_ret program, the ret passed should be 0 */
> + fmod_ret_result2 = (sequence2 == 2 && ret == 0);
> + return input_retval;
> +}
> +
> +__u64 fexit_result2 = 0;
> +SEC("fexit/bpf_modify_return_test2")
> +int BPF_PROG(fexit_test2, int a, int *b, short c, int d, void *e, char f,
> + int g, int ret)
> +{
> + sequence2++;
> + /* If the input_reval is non-zero a successful modification should have
> + * occurred.
> + */
> + if (input_retval)
> + fexit_result2 = (sequence2 == 3 && ret == input_retval);
> + else
> + fexit_result2 = (sequence2 == 3 && ret == 29);
> +
> + return 0;
> +}
> diff --git a/tools/testing/selftests/bpf/progs/tracing_struct.c b/tools/testing/selftests/bpf/progs/tracing_struct.c
> index c435a3a8328a..515daef3c84b 100644
> --- a/tools/testing/selftests/bpf/progs/tracing_struct.c
> +++ b/tools/testing/selftests/bpf/progs/tracing_struct.c
> @@ -18,6 +18,11 @@ struct bpf_testmod_struct_arg_3 {
> int b[];
> };
>
> +struct bpf_testmod_struct_arg_4 {
> + u64 a;
> + int b;
> +};
> +
> long t1_a_a, t1_a_b, t1_b, t1_c, t1_ret, t1_nregs;
> __u64 t1_reg0, t1_reg1, t1_reg2, t1_reg3;
> long t2_a, t2_b_a, t2_b_b, t2_c, t2_ret;
> @@ -25,6 +30,9 @@ long t3_a, t3_b, t3_c_a, t3_c_b, t3_ret;
> long t4_a_a, t4_b, t4_c, t4_d, t4_e_a, t4_e_b, t4_ret;
> long t5_ret;
> int t6;
> +long t7_a, t7_b, t7_c, t7_d, t7_e, t7_f_a, t7_f_b, t7_ret;
> +long t8_a, t8_b, t8_c, t8_d, t8_e, t8_f_a, t8_f_b, t8_g, t8_ret;
> +
>
> SEC("fentry/bpf_testmod_test_struct_arg_1")
> int BPF_PROG2(test_struct_arg_1, struct bpf_testmod_struct_arg_2, a, int, b, int, c)
> @@ -130,4 +138,50 @@ int BPF_PROG2(test_struct_arg_11, struct bpf_testmod_struct_arg_3 *, a)
> return 0;
> }
>
> +SEC("fentry/bpf_testmod_test_struct_arg_7")
> +int BPF_PROG2(test_struct_arg_12, __u64, a, void *, b, short, c, int, d,
> + void *, e, struct bpf_testmod_struct_arg_4, f)
> +{
> + t7_a = a;
> + t7_b = (long)b;
> + t7_c = c;
> + t7_d = d;
> + t7_e = (long)e;
> + t7_f_a = f.a;
> + t7_f_b = f.b;
> + return 0;
> +}
> +
> +SEC("fexit/bpf_testmod_test_struct_arg_7")
> +int BPF_PROG2(test_struct_arg_13, __u64, a, void *, b, short, c, int, d,
> + void *, e, struct bpf_testmod_struct_arg_4, f, int, ret)
> +{
> + t7_ret = ret;
> + return 0;
> +}
> +
> +SEC("fentry/bpf_testmod_test_struct_arg_8")
> +int BPF_PROG2(test_struct_arg_14, __u64, a, void *, b, short, c, int, d,
> + void *, e, struct bpf_testmod_struct_arg_4, f, int, g)
> +{
> + t8_a = a;
> + t8_b = (long)b;
> + t8_c = c;
> + t8_d = d;
> + t8_e = (long)e;
> + t8_f_a = f.a;
> + t8_f_b = f.b;
> + t8_g = g;
> + return 0;
> +}
> +
> +SEC("fexit/bpf_testmod_test_struct_arg_8")
> +int BPF_PROG2(test_struct_arg_15, __u64, a, void *, b, short, c, int, d,
> + void *, e, struct bpf_testmod_struct_arg_4, f, int, g,
> + int, ret)
> +{
> + t8_ret = ret;
> + return 0;
> +}
> +
> char _license[] SEC("license") = "GPL";
> --
> 2.40.1
>
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