From: Jiri Olsa <jolsa@kernel.org>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>
Cc: David Vernet <void@manifault.com>,
bpf@vger.kernel.org, Martin KaFai Lau <kafai@fb.com>,
Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@chromium.org>,
Stanislav Fomichev <sdf@google.com>, Hao Luo <haoluo@google.com>,
Kumar Kartikeya Dwivedi <memxor@gmail.com>
Subject: [PATCHv4 bpf-next 02/10] selftests/bpf: Move kfunc exports to bpf_testmod/bpf_testmod_kfunc.h
Date: Mon, 15 May 2023 15:37:48 +0200 [thread overview]
Message-ID: <20230515133756.1658301-3-jolsa@kernel.org> (raw)
In-Reply-To: <20230515133756.1658301-1-jolsa@kernel.org>
Move all kfunc exports into separate bpf_testmod_kfunc.h header file
and include it in tests that need it.
We will move all test kfuncs into bpf_testmod in following change,
so it's convenient to have declarations in single place.
The bpf_testmod_kfunc.h is included by both bpf_testmod and bpf
programs that use test kfuncs.
As suggested by David, the bpf_testmod_kfunc.h includes vmlinux.h
and bpf/bpf_helpers.h for bpf programs build, so the declarations
have proper __ksym attribute and we can resolve all the structs.
Note in kfunc_call_test_subprog.c we can no longer use the sk_state
define from bpf_tcp_helpers.h (because it clashed with vmlinux.h)
and we need to address __sk_common.skc_state field directly.
Acked-by: David Vernet <void@manifault.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
.../bpf/bpf_testmod/bpf_testmod_kfunc.h | 40 +++++++++++++++++++
tools/testing/selftests/bpf/progs/cb_refs.c | 4 +-
.../selftests/bpf/progs/jit_probe_mem.c | 4 +-
.../bpf/progs/kfunc_call_destructive.c | 3 +-
.../selftests/bpf/progs/kfunc_call_fail.c | 9 +----
.../selftests/bpf/progs/kfunc_call_race.c | 3 +-
.../selftests/bpf/progs/kfunc_call_test.c | 17 +-------
.../bpf/progs/kfunc_call_test_subprog.c | 9 +----
.../selftests/bpf/progs/local_kptr_stash.c | 5 +--
tools/testing/selftests/bpf/progs/map_kptr.c | 5 +--
.../selftests/bpf/progs/map_kptr_fail.c | 4 +-
11 files changed, 52 insertions(+), 51 deletions(-)
create mode 100644 tools/testing/selftests/bpf/bpf_testmod/bpf_testmod_kfunc.h
diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod_kfunc.h b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod_kfunc.h
new file mode 100644
index 000000000000..f0755135061d
--- /dev/null
+++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod_kfunc.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _BPF_TESTMOD_KFUNC_H
+#define _BPF_TESTMOD_KFUNC_H
+
+#ifndef __KERNEL__
+#include <vmlinux.h>
+#include <bpf/bpf_helpers.h>
+#else
+#define __ksym
+#endif
+
+extern struct prog_test_ref_kfunc *
+bpf_kfunc_call_test_acquire(unsigned long *scalar_ptr) __ksym;
+extern void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p) __ksym;
+void bpf_kfunc_call_test_ref(struct prog_test_ref_kfunc *p) __ksym;
+
+extern void bpf_kfunc_call_test_mem_len_pass1(void *mem, int len) __ksym;
+extern int *bpf_kfunc_call_test_get_rdwr_mem(struct prog_test_ref_kfunc *p, const int rdwr_buf_size) __ksym;
+extern int *bpf_kfunc_call_test_get_rdonly_mem(struct prog_test_ref_kfunc *p, const int rdonly_buf_size) __ksym;
+extern int *bpf_kfunc_call_test_acq_rdonly_mem(struct prog_test_ref_kfunc *p, const int rdonly_buf_size) __ksym;
+extern void bpf_kfunc_call_int_mem_release(int *p) __ksym;
+extern u32 bpf_kfunc_call_test_static_unused_arg(u32 arg, u32 unused) __ksym;
+
+extern void bpf_testmod_test_mod_kfunc(int i) __ksym;
+
+extern __u64 bpf_kfunc_call_test1(struct sock *sk, __u32 a, __u64 b,
+ __u32 c, __u64 d) __ksym;
+extern int bpf_kfunc_call_test2(struct sock *sk, __u32 a, __u32 b) __ksym;
+extern struct sock *bpf_kfunc_call_test3(struct sock *sk) __ksym;
+extern long bpf_kfunc_call_test4(signed char a, short b, int c, long d) __ksym;
+
+extern void bpf_kfunc_call_test_pass_ctx(struct __sk_buff *skb) __ksym;
+extern void bpf_kfunc_call_test_pass1(struct prog_test_pass1 *p) __ksym;
+extern void bpf_kfunc_call_test_pass2(struct prog_test_pass2 *p) __ksym;
+extern void bpf_kfunc_call_test_mem_len_fail2(__u64 *mem, int len) __ksym;
+
+extern void bpf_kfunc_call_test_destructive(void) __ksym;
+
+#endif /* _BPF_TESTMOD_KFUNC_H */
diff --git a/tools/testing/selftests/bpf/progs/cb_refs.c b/tools/testing/selftests/bpf/progs/cb_refs.c
index 50f95ec61165..76d661b20e87 100644
--- a/tools/testing/selftests/bpf/progs/cb_refs.c
+++ b/tools/testing/selftests/bpf/progs/cb_refs.c
@@ -2,6 +2,7 @@
#include <vmlinux.h>
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_helpers.h>
+#include "../bpf_testmod/bpf_testmod_kfunc.h"
struct map_value {
struct prog_test_ref_kfunc __kptr *ptr;
@@ -14,9 +15,6 @@ struct {
__uint(max_entries, 16);
} array_map SEC(".maps");
-extern struct prog_test_ref_kfunc *bpf_kfunc_call_test_acquire(unsigned long *sp) __ksym;
-extern void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p) __ksym;
-
static __noinline int cb1(void *map, void *key, void *value, void *ctx)
{
void *p = *(void **)ctx;
diff --git a/tools/testing/selftests/bpf/progs/jit_probe_mem.c b/tools/testing/selftests/bpf/progs/jit_probe_mem.c
index 13f00ca2ed0a..f9789e668297 100644
--- a/tools/testing/selftests/bpf/progs/jit_probe_mem.c
+++ b/tools/testing/selftests/bpf/progs/jit_probe_mem.c
@@ -3,13 +3,11 @@
#include <vmlinux.h>
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_helpers.h>
+#include "../bpf_testmod/bpf_testmod_kfunc.h"
static struct prog_test_ref_kfunc __kptr *v;
long total_sum = -1;
-extern struct prog_test_ref_kfunc *bpf_kfunc_call_test_acquire(unsigned long *sp) __ksym;
-extern void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p) __ksym;
-
SEC("tc")
int test_jit_probe_mem(struct __sk_buff *ctx)
{
diff --git a/tools/testing/selftests/bpf/progs/kfunc_call_destructive.c b/tools/testing/selftests/bpf/progs/kfunc_call_destructive.c
index 767472bc5a97..7632d9ecb253 100644
--- a/tools/testing/selftests/bpf/progs/kfunc_call_destructive.c
+++ b/tools/testing/selftests/bpf/progs/kfunc_call_destructive.c
@@ -1,8 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#include <vmlinux.h>
#include <bpf/bpf_helpers.h>
-
-extern void bpf_kfunc_call_test_destructive(void) __ksym;
+#include "../bpf_testmod/bpf_testmod_kfunc.h"
SEC("tc")
int kfunc_destructive_test(void)
diff --git a/tools/testing/selftests/bpf/progs/kfunc_call_fail.c b/tools/testing/selftests/bpf/progs/kfunc_call_fail.c
index b98313d391c6..4b0b7b79cdfb 100644
--- a/tools/testing/selftests/bpf/progs/kfunc_call_fail.c
+++ b/tools/testing/selftests/bpf/progs/kfunc_call_fail.c
@@ -2,14 +2,7 @@
/* Copyright (c) 2021 Facebook */
#include <vmlinux.h>
#include <bpf/bpf_helpers.h>
-
-extern struct prog_test_ref_kfunc *bpf_kfunc_call_test_acquire(unsigned long *sp) __ksym;
-extern void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p) __ksym;
-extern void bpf_kfunc_call_test_mem_len_pass1(void *mem, int len) __ksym;
-extern int *bpf_kfunc_call_test_get_rdwr_mem(struct prog_test_ref_kfunc *p, const int rdwr_buf_size) __ksym;
-extern int *bpf_kfunc_call_test_get_rdonly_mem(struct prog_test_ref_kfunc *p, const int rdonly_buf_size) __ksym;
-extern int *bpf_kfunc_call_test_acq_rdonly_mem(struct prog_test_ref_kfunc *p, const int rdonly_buf_size) __ksym;
-extern void bpf_kfunc_call_int_mem_release(int *p) __ksym;
+#include "../bpf_testmod/bpf_testmod_kfunc.h"
struct syscall_test_args {
__u8 data[16];
diff --git a/tools/testing/selftests/bpf/progs/kfunc_call_race.c b/tools/testing/selftests/bpf/progs/kfunc_call_race.c
index 4e8fed75a4e0..d532af07decf 100644
--- a/tools/testing/selftests/bpf/progs/kfunc_call_race.c
+++ b/tools/testing/selftests/bpf/progs/kfunc_call_race.c
@@ -1,8 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#include <vmlinux.h>
#include <bpf/bpf_helpers.h>
-
-extern void bpf_testmod_test_mod_kfunc(int i) __ksym;
+#include "../bpf_testmod/bpf_testmod_kfunc.h"
SEC("tc")
int kfunc_call_fail(struct __sk_buff *ctx)
diff --git a/tools/testing/selftests/bpf/progs/kfunc_call_test.c b/tools/testing/selftests/bpf/progs/kfunc_call_test.c
index 7daa8f5720b9..cf68d1e48a0f 100644
--- a/tools/testing/selftests/bpf/progs/kfunc_call_test.c
+++ b/tools/testing/selftests/bpf/progs/kfunc_call_test.c
@@ -2,22 +2,7 @@
/* Copyright (c) 2021 Facebook */
#include <vmlinux.h>
#include <bpf/bpf_helpers.h>
-
-extern long bpf_kfunc_call_test4(signed char a, short b, int c, long d) __ksym;
-extern int bpf_kfunc_call_test2(struct sock *sk, __u32 a, __u32 b) __ksym;
-extern __u64 bpf_kfunc_call_test1(struct sock *sk, __u32 a, __u64 b,
- __u32 c, __u64 d) __ksym;
-
-extern struct prog_test_ref_kfunc *bpf_kfunc_call_test_acquire(unsigned long *sp) __ksym;
-extern void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p) __ksym;
-extern void bpf_kfunc_call_test_pass_ctx(struct __sk_buff *skb) __ksym;
-extern void bpf_kfunc_call_test_pass1(struct prog_test_pass1 *p) __ksym;
-extern void bpf_kfunc_call_test_pass2(struct prog_test_pass2 *p) __ksym;
-extern void bpf_kfunc_call_test_mem_len_pass1(void *mem, int len) __ksym;
-extern void bpf_kfunc_call_test_mem_len_fail2(__u64 *mem, int len) __ksym;
-extern int *bpf_kfunc_call_test_get_rdwr_mem(struct prog_test_ref_kfunc *p, const int rdwr_buf_size) __ksym;
-extern int *bpf_kfunc_call_test_get_rdonly_mem(struct prog_test_ref_kfunc *p, const int rdonly_buf_size) __ksym;
-extern u32 bpf_kfunc_call_test_static_unused_arg(u32 arg, u32 unused) __ksym;
+#include "../bpf_testmod/bpf_testmod_kfunc.h"
SEC("tc")
int kfunc_call_test4(struct __sk_buff *skb)
diff --git a/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c b/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c
index c1fdecabeabf..2380c75e74ce 100644
--- a/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c
+++ b/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c
@@ -1,13 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2021 Facebook */
-#include <linux/bpf.h>
-#include <bpf/bpf_helpers.h>
-#include "bpf_tcp_helpers.h"
+#include "../bpf_testmod/bpf_testmod_kfunc.h"
extern const int bpf_prog_active __ksym;
-extern __u64 bpf_kfunc_call_test1(struct sock *sk, __u32 a, __u64 b,
- __u32 c, __u64 d) __ksym;
-extern struct sock *bpf_kfunc_call_test3(struct sock *sk) __ksym;
int active_res = -1;
int sk_state_res = -1;
@@ -28,7 +23,7 @@ int __noinline f1(struct __sk_buff *skb)
if (active)
active_res = *active;
- sk_state_res = bpf_kfunc_call_test3((struct sock *)sk)->sk_state;
+ sk_state_res = bpf_kfunc_call_test3((struct sock *)sk)->__sk_common.skc_state;
return (__u32)bpf_kfunc_call_test1((struct sock *)sk, 1, 2, 3, 4);
}
diff --git a/tools/testing/selftests/bpf/progs/local_kptr_stash.c b/tools/testing/selftests/bpf/progs/local_kptr_stash.c
index 0ef286da092b..06838083079c 100644
--- a/tools/testing/selftests/bpf/progs/local_kptr_stash.c
+++ b/tools/testing/selftests/bpf/progs/local_kptr_stash.c
@@ -5,7 +5,8 @@
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_core_read.h>
-#include "bpf_experimental.h"
+#include "../bpf_experimental.h"
+#include "../bpf_testmod/bpf_testmod_kfunc.h"
struct node_data {
long key;
@@ -32,8 +33,6 @@ struct map_value {
*/
struct node_data *just_here_because_btf_bug;
-extern void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p) __ksym;
-
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__type(key, int);
diff --git a/tools/testing/selftests/bpf/progs/map_kptr.c b/tools/testing/selftests/bpf/progs/map_kptr.c
index d7150041e5d1..da30f0d59364 100644
--- a/tools/testing/selftests/bpf/progs/map_kptr.c
+++ b/tools/testing/selftests/bpf/progs/map_kptr.c
@@ -2,6 +2,7 @@
#include <vmlinux.h>
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_helpers.h>
+#include "../bpf_testmod/bpf_testmod_kfunc.h"
struct map_value {
struct prog_test_ref_kfunc __kptr_untrusted *unref_ptr;
@@ -114,10 +115,6 @@ DEFINE_MAP_OF_MAP(BPF_MAP_TYPE_HASH_OF_MAPS, hash_map, hash_of_hash_maps);
DEFINE_MAP_OF_MAP(BPF_MAP_TYPE_HASH_OF_MAPS, hash_malloc_map, hash_of_hash_malloc_maps);
DEFINE_MAP_OF_MAP(BPF_MAP_TYPE_HASH_OF_MAPS, lru_hash_map, hash_of_lru_hash_maps);
-extern struct prog_test_ref_kfunc *bpf_kfunc_call_test_acquire(unsigned long *sp) __ksym;
-extern void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p) __ksym;
-void bpf_kfunc_call_test_ref(struct prog_test_ref_kfunc *p) __ksym;
-
#define WRITE_ONCE(x, val) ((*(volatile typeof(x) *) &(x)) = (val))
static void test_kptr_unref(struct map_value *v)
diff --git a/tools/testing/selftests/bpf/progs/map_kptr_fail.c b/tools/testing/selftests/bpf/progs/map_kptr_fail.c
index da8c724f839b..450bb373b179 100644
--- a/tools/testing/selftests/bpf/progs/map_kptr_fail.c
+++ b/tools/testing/selftests/bpf/progs/map_kptr_fail.c
@@ -4,6 +4,7 @@
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_core_read.h>
#include "bpf_misc.h"
+#include "../bpf_testmod/bpf_testmod_kfunc.h"
struct map_value {
char buf[8];
@@ -19,9 +20,6 @@ struct array_map {
__uint(max_entries, 1);
} array_map SEC(".maps");
-extern struct prog_test_ref_kfunc *bpf_kfunc_call_test_acquire(unsigned long *sp) __ksym;
-extern void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p) __ksym;
-
SEC("?tc")
__failure __msg("kptr access size must be BPF_DW")
int size_not_bpf_dw(struct __sk_buff *ctx)
--
2.40.1
next prev parent reply other threads:[~2023-05-15 13:38 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-15 13:37 [PATCHv4 bpf-next 00/10] bpf: Move kernel test kfuncs into bpf_testmod Jiri Olsa
2023-05-15 13:37 ` [PATCHv4 bpf-next 01/10] libbpf: Store zero fd to fd_array for loader kfunc relocation Jiri Olsa
2023-05-15 13:37 ` Jiri Olsa [this message]
2023-05-15 13:37 ` [PATCHv4 bpf-next 03/10] selftests/bpf: Move test_progs helpers to testing_helpers object Jiri Olsa
2023-05-15 13:37 ` [PATCHv4 bpf-next 04/10] selftests/bpf: Use only stdout in un/load_bpf_testmod functions Jiri Olsa
2023-05-15 13:37 ` [PATCHv4 bpf-next 05/10] selftests/bpf: Do not unload bpf_testmod in load_bpf_testmod Jiri Olsa
2023-05-15 13:37 ` [PATCHv4 bpf-next 06/10] selftests/bpf: Use un/load_bpf_testmod functions in tests Jiri Olsa
2023-05-15 13:37 ` [PATCHv4 bpf-next 07/10] selftests/bpf: Load bpf_testmod for verifier test Jiri Olsa
2023-05-15 13:37 ` [PATCHv4 bpf-next 08/10] selftests/bpf: Allow to use kfunc from testmod.ko in test_verifier Jiri Olsa
2023-05-16 21:45 ` Andrii Nakryiko
2023-05-17 5:17 ` Alexei Starovoitov
2023-05-17 14:27 ` Eduard Zingerman
2023-05-17 16:51 ` Andrii Nakryiko
2023-05-15 13:37 ` [PATCHv4 bpf-next 09/10] selftests/bpf: Remove extern from kfuncs declarations Jiri Olsa
2023-05-15 13:37 ` [PATCHv4 bpf-next 10/10] bpf: Move kernel test kfuncs to bpf_testmod Jiri Olsa
2023-05-16 2:22 ` David Vernet
2023-05-17 5:20 ` [PATCHv4 bpf-next 00/10] bpf: Move kernel test kfuncs into bpf_testmod patchwork-bot+netdevbpf
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