From: Menglong Dong <menglong8.dong@gmail.com>
To: andrii@kernel.org
Cc: ast@kernel.org, daniel@iogearbox.net, martin.lau@linux.dev,
eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev,
john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me,
haoluo@google.com, jolsa@kernel.org, davem@davemloft.net,
dsahern@kernel.org, tglx@linutronix.de, mingo@redhat.com,
jiang.biao@linux.dev, bp@alien8.de, dave.hansen@linux.intel.com,
x86@kernel.org, hpa@zytor.com, bpf@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH bpf-next v12 11/13] selftests/bpf: test bpf_get_func_* for fsession
Date: Sat, 24 Jan 2026 11:31:17 +0800 [thread overview]
Message-ID: <20260124033119.28682-12-dongml2@chinatelecom.cn> (raw)
In-Reply-To: <20260124033119.28682-1-dongml2@chinatelecom.cn>
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>
---
.../bpf/prog_tests/get_func_args_test.c | 1 +
.../bpf/prog_tests/get_func_ip_test.c | 2 ++
.../selftests/bpf/progs/get_func_args_test.c | 31 ++++++++++++++++++-
.../selftests/bpf/progs/get_func_ip_test.c | 14 +++++++++
4 files changed, 47 insertions(+), 1 deletion(-)
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..8ecc5f339552 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 +165,32 @@ int BPF_PROG(tp_test2)
return 0;
}
+
+__u64 test7_result = 0;
+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;
+}
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..bd7598a037cd 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 +103,17 @@ int BPF_URETPROBE(test8, int ret)
test8_result = (const void *) addr == (const void *) uprobe_trigger;
return 0;
}
+
+__u64 test9_exit_result = 0;
+__u64 test9_entry_result = 0;
+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;
+}
--
2.52.0
next prev parent reply other threads:[~2026-01-24 3:33 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-24 3:31 [PATCH bpf-next v12 00/13] bpf: fsession support Menglong Dong
2026-01-24 3:31 ` [PATCH bpf-next v12 01/13] bpf: add " Menglong Dong
2026-01-24 3:31 ` [PATCH bpf-next v12 02/13] bpf: use the least significant byte for the nr_args in trampoline Menglong Dong
2026-01-24 3:31 ` [PATCH bpf-next v12 03/13] bpf: change prototype of bpf_session_{cookie,is_return} Menglong Dong
2026-01-24 3:31 ` [PATCH bpf-next v12 04/13] bpf: support fsession for bpf_session_is_return Menglong Dong
2026-01-24 4:03 ` bot+bpf-ci
2026-01-24 4:56 ` Menglong Dong
2026-01-24 3:31 ` [PATCH bpf-next v12 05/13] bpf: support fsession for bpf_session_cookie Menglong Dong
2026-01-24 3:31 ` [PATCH bpf-next v12 06/13] bpf,x86: introduce emit_store_stack_imm64() for trampoline Menglong Dong
2026-01-24 3:31 ` [PATCH bpf-next v12 07/13] bpf,x86: add fsession support for x86_64 Menglong Dong
2026-01-24 3:31 ` [PATCH bpf-next v12 08/13] libbpf: add fsession support Menglong Dong
2026-01-24 3:31 ` [PATCH bpf-next v12 09/13] bpftool: " Menglong Dong
2026-01-24 3:31 ` [PATCH bpf-next v12 10/13] selftests/bpf: add testcases for fsession Menglong Dong
2026-01-24 3:31 ` Menglong Dong [this message]
2026-01-24 5:09 ` [PATCH bpf-next v12 11/13] selftests/bpf: test bpf_get_func_* " Menglong Dong
2026-01-24 3:31 ` [PATCH bpf-next v12 12/13] selftests/bpf: add testcases for fsession cookie Menglong Dong
2026-01-24 3:31 ` [PATCH bpf-next v12 13/13] selftests/bpf: test fsession mixed with fentry and fexit Menglong Dong
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