[PATCH RFC bpf-next 5/8] selftests/bpf: rely on wq_callback_fn_t

Benjamin Tissoires
2024-05-07T13:20:02Z

The type of bpf_wq callbacks changed. So adapt to it and make use of
wq_callback_fn_t.

Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>

---

This is an RFC, and is not meant to be fully reviewed/applied as it is.
I'm posting this to show what I wanted to explain in
https://lore.kernel.org/bpf/mhkzkf4e23uvljtmwizwcxyuyat2tmfxn33xb4t7waafgmsa66@mcrzpj3b6ssx/
---
tools/testing/selftests/bpf/bpf_experimental.h | 3 +--
tools/testing/selftests/bpf/progs/wq.c | 10 ++++------
tools/testing/selftests/bpf/progs/wq_failures.c | 4 ++--
3 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/tools/testing/selftests/bpf/bpf_experimental.h b/tools/testing/selftests/bpf/bpf_experimental.h
index 8b9cc87be4c4..0a35e6efccae 100644
--- a/tools/testing/selftests/bpf/bpf_experimental.h
+++ b/tools/testing/selftests/bpf/bpf_experimental.h
@@ -494,8 +494,7 @@ extern void bpf_iter_css_destroy(struct bpf_iter_css *it) __weak __ksym;

extern int bpf_wq_init(struct bpf_wq *wq, void *p__map, unsigned int flags) __weak __ksym;
extern int bpf_wq_start(struct bpf_wq *wq, unsigned int flags) __weak __ksym;
-extern int bpf_wq_set_callback_impl(struct bpf_wq *wq,
- int (callback_fn)(void *map, int *key, struct bpf_wq *wq),
+extern int bpf_wq_set_callback_impl(struct bpf_wq *wq, wq_callback_fn_t cb,
unsigned int flags__k, void *aux__ign) __ksym;
#define bpf_wq_set_callback(timer, cb, flags) \
bpf_wq_set_callback_impl(timer, cb, flags, NULL)
diff --git a/tools/testing/selftests/bpf/progs/wq.c b/tools/testing/selftests/bpf/progs/wq.c
index 49e712acbf60..c8c88976baca 100644
--- a/tools/testing/selftests/bpf/progs/wq.c
+++ b/tools/testing/selftests/bpf/progs/wq.c
@@ -52,8 +52,7 @@ struct {
__u32 ok;
__u32 ok_sleepable;

-static int test_elem_callback(void *map, int *key,
- int (callback_fn)(void *map, int *key, struct bpf_wq *wq))
+static int test_elem_callback(void *map, int *key, wq_callback_fn_t callback_fn)
{
struct elem init = {}, *val;
struct bpf_wq *wq;
@@ -83,8 +82,7 @@ static int test_elem_callback(void *map, int *key,
return 0;
}

-static int test_hmap_elem_callback(void *map, int *key,
- int (callback_fn)(void *map, int *key, struct bpf_wq *wq))
+static int test_hmap_elem_callback(void *map, int *key, wq_callback_fn_t callback_fn)
{
struct hmap_elem init = {}, *val;
struct bpf_wq *wq;
@@ -114,7 +112,7 @@ static int test_hmap_elem_callback(void *map, int *key,
}

/* callback for non sleepable workqueue */
-static int wq_callback(void *map, int *key, struct bpf_wq *work)
+static int wq_callback(struct bpf_map *map, int *key, struct bpf_wq *work)
{
bpf_kfunc_common_test();
ok |= (1 << *key);
@@ -122,7 +120,7 @@ static int wq_callback(void *map, int *key, struct bpf_wq *work)
}

/* callback for sleepable workqueue */
-static int wq_cb_sleepable(void *map, int *key, struct bpf_wq *work)
+static int wq_cb_sleepable(struct bpf_map *map, int *key, struct bpf_wq *work)
{
bpf_kfunc_call_test_sleepable();
ok_sleepable |= (1 << *key);
diff --git a/tools/testing/selftests/bpf/progs/wq_failures.c b/tools/testing/selftests/bpf/progs/wq_failures.c
index 4cbdb425f223..3d87ccb8286e 100644
--- a/tools/testing/selftests/bpf/progs/wq_failures.c
+++ b/tools/testing/selftests/bpf/progs/wq_failures.c
@@ -28,14 +28,14 @@ struct {
} lru SEC(".maps");

/* callback for non sleepable workqueue */
-static int wq_callback(void *map, int *key, struct bpf_wq *work)
+static int wq_callback(struct bpf_map *map, int *key, struct bpf_wq *work)
{
bpf_kfunc_common_test();
return 0;
}

/* callback for sleepable workqueue */
-static int wq_cb_sleepable(void *map, int *key, struct bpf_wq *work)
+static int wq_cb_sleepable(struct bpf_map *map, int *key, struct bpf_wq *work)
{
bpf_kfunc_call_test_sleepable();
return 0;

--
2.44.0