diff options
| author | Menglong Dong <menglong8.dong@gmail.com> | 2026-01-24 14:20:06 +0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-01-24 18:49:36 -0800 |
| commit | a5533a6eaa5b602fe54e53d85f787e09eab4e771 (patch) | |
| tree | 83f9c02854d3209fc32b9e1879d843a0564219f2 /tools | |
| parent | f7afef5617b685c3491db3593ca09abc33815774 (diff) | |
selftests/bpf: test bpf_get_func_* for fsession
Test following bpf helper for fsession:
bpf_get_func_arg()
bpf_get_func_arg_cnt()
bpf_get_func_ret()
bpf_get_func_ip()
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Link: https://lore.kernel.org/r/20260124062008.8657-12-dongml2@chinatelecom.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools')
4 files changed, 65 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/get_func_args_test.c b/tools/testing/selftests/bpf/prog_tests/get_func_args_test.c index fadee95d3ae8..96b27de05524 100644 --- a/tools/testing/selftests/bpf/prog_tests/get_func_args_test.c +++ b/tools/testing/selftests/bpf/prog_tests/get_func_args_test.c @@ -41,6 +41,7 @@ void test_get_func_args_test(void) ASSERT_EQ(skel->bss->test4_result, 1, "test4_result"); ASSERT_EQ(skel->bss->test5_result, 1, "test5_result"); ASSERT_EQ(skel->bss->test6_result, 1, "test6_result"); + ASSERT_EQ(skel->bss->test7_result, 1, "test7_result"); cleanup: get_func_args_test__destroy(skel); diff --git a/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c b/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c index c40242dfa8fb..7772a0f288d3 100644 --- a/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c +++ b/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c @@ -46,6 +46,8 @@ static void test_function_entry(void) ASSERT_EQ(skel->bss->test5_result, 1, "test5_result"); ASSERT_EQ(skel->bss->test7_result, 1, "test7_result"); ASSERT_EQ(skel->bss->test8_result, 1, "test8_result"); + ASSERT_EQ(skel->bss->test9_entry_result, 1, "test9_entry_result"); + ASSERT_EQ(skel->bss->test9_exit_result, 1, "test9_exit_result"); cleanup: get_func_ip_test__destroy(skel); diff --git a/tools/testing/selftests/bpf/progs/get_func_args_test.c b/tools/testing/selftests/bpf/progs/get_func_args_test.c index 5b7233afef05..0a3236a7a109 100644 --- a/tools/testing/selftests/bpf/progs/get_func_args_test.c +++ b/tools/testing/selftests/bpf/progs/get_func_args_test.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -#include <linux/bpf.h> +#include <vmlinux.h> #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> #include <errno.h> @@ -165,3 +165,41 @@ int BPF_PROG(tp_test2) return 0; } + +__u64 test7_result = 0; +#ifdef __TARGET_ARCH_x86 +SEC("fsession/bpf_fentry_test1") +int BPF_PROG(test7) +{ + __u64 cnt = bpf_get_func_arg_cnt(ctx); + __u64 a = 0, z = 0, ret = 0; + __s64 err; + + test7_result = cnt == 1; + + /* valid arguments */ + err = bpf_get_func_arg(ctx, 0, &a); + test7_result &= err == 0 && ((int) a == 1); + + /* not valid argument */ + err = bpf_get_func_arg(ctx, 1, &z); + test7_result &= err == -EINVAL; + + if (bpf_session_is_return(ctx)) { + err = bpf_get_func_ret(ctx, &ret); + test7_result &= err == 0 && ret == 2; + } else { + err = bpf_get_func_ret(ctx, &ret); + test7_result &= err == 0 && ret == 0; + } + + return 0; +} +#else +SEC("fentry/bpf_fentry_test1") +int BPF_PROG(test7) +{ + test7_result = 1; + return 0; +} +#endif diff --git a/tools/testing/selftests/bpf/progs/get_func_ip_test.c b/tools/testing/selftests/bpf/progs/get_func_ip_test.c index 2011cacdeb18..65f7e1f182bf 100644 --- a/tools/testing/selftests/bpf/progs/get_func_ip_test.c +++ b/tools/testing/selftests/bpf/progs/get_func_ip_test.c @@ -103,3 +103,26 @@ int BPF_URETPROBE(test8, int ret) test8_result = (const void *) addr == (const void *) uprobe_trigger; return 0; } + +__u64 test9_entry_result = 0; +__u64 test9_exit_result = 0; +#ifdef __TARGET_ARCH_x86 +SEC("fsession/bpf_fentry_test1") +int BPF_PROG(test9, int a) +{ + __u64 addr = bpf_get_func_ip(ctx); + + if (bpf_session_is_return(ctx)) + test9_exit_result = (const void *) addr == &bpf_fentry_test1; + else + test9_entry_result = (const void *) addr == &bpf_fentry_test1; + return 0; +} +#else +SEC("fentry/bpf_fentry_test1") +int BPF_PROG(test9, int a) +{ + test9_entry_result = test9_exit_result = 1; + return 0; +} +#endif |