github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-22 22:22:08 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

selftests/hid: add tests for hid_bpf_input_report

Browse Source 
Usual way of testing, we call the function and ensures we receive
the event

Link: https://lore.kernel.org/r/20240315-b4-hid-bpf-new-funcs-v4-6-079c282469d3@kernel.org
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
This commit is contained in:
Benjamin Tissoires 2024-03-15 15:44:43 +01:00
parent 9be50ac30a
commit 2c0e8ced7d
3 changed files with 73 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
tools/testing/selftests/hid/hid_bpf.c
View File

@ -749,6 +749,52 @@ TEST_F(hid_bpf, test_hid_change_report)
ASSERT_EQ(buf[2], 0) TH_LOG("leftovers_from_previous_test");
}
/*
* Call hid_bpf_input_report against the given uhid device,
* check that the program is called and does the expected.
*/
TEST_F(hid_bpf, test_hid_user_input_report_call)
{
struct hid_hw_request_syscall_args args = {
.retval = -1,
.size = 10,
};
DECLARE_LIBBPF_OPTS(bpf_test_run_opts, tattrs,
.ctx_in = &args,
.ctx_size_in = sizeof(args),
);
__u8 buf[10] = {0};
int err, prog_fd;
LOAD_BPF;
args.hid = self->hid_id;
args.data[0] = 1; /* report ID */
args.data[1] = 2; /* report ID */
args.data[2] = 42; /* report ID */
prog_fd = bpf_program__fd(self->skel->progs.hid_user_input_report);
/* check that there is no data to read from hidraw */
memset(buf, 0, sizeof(buf));
err = read(self->hidraw_fd, buf, sizeof(buf));
ASSERT_EQ(err, -1) TH_LOG("read_hidraw");
err = bpf_prog_test_run_opts(prog_fd, &tattrs);
ASSERT_OK(err) TH_LOG("error while calling bpf_prog_test_run_opts");
ASSERT_EQ(args.retval, 0);
/* read the data from hidraw */
memset(buf, 0, sizeof(buf));
err = read(self->hidraw_fd, buf, sizeof(buf));
ASSERT_EQ(err, 6) TH_LOG("read_hidraw");
ASSERT_EQ(buf[0], 1);
ASSERT_EQ(buf[1], 2);
ASSERT_EQ(buf[2], 42);
}
/*
* Call hid_bpf_hw_output_report against the given uhid device,
* check that the program is called and does the expected.
@ -797,8 +843,7 @@ TEST_F(hid_bpf, test_hid_user_output_report_call)
}
/*
* Attach hid_user_raw_request to the given uhid device,
* call the bpf program from userspace
* Call hid_hw_raw_request against the given uhid device,
* check that the program is called and does the expected.
*/
TEST_F(hid_bpf, test_hid_user_raw_request_call)

22
tools/testing/selftests/hid/progs/hid.c
View File

@ -125,6 +125,28 @@ int hid_user_output_report(struct hid_hw_request_syscall_args *args)
return 0;
}
SEC("syscall")
int hid_user_input_report(struct hid_hw_request_syscall_args *args)
{
struct hid_bpf_ctx *ctx;
const size_t size = args->size;
int i, ret = 0;
if (size > sizeof(args->data))
return -7; /* -E2BIG */
ctx = hid_bpf_allocate_context(args->hid);
if (!ctx)
return -1; /* EPERM check */
ret = hid_bpf_input_report(ctx, HID_INPUT_REPORT, args->data, size);
args->retval = ret;
hid_bpf_release_context(ctx);
return 0;
}
static const __u8 rdesc[] = {
0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
0x09, 0x32, /* USAGE (Z) */

4
tools/testing/selftests/hid/progs/hid_bpf_helpers.h
View File

@ -96,5 +96,9 @@ extern int hid_bpf_hw_request(struct hid_bpf_ctx *ctx,
enum hid_class_request reqtype) __ksym;
extern int hid_bpf_hw_output_report(struct hid_bpf_ctx *ctx,
__u8 *buf, size_t buf__sz) __ksym;
extern int hid_bpf_input_report(struct hid_bpf_ctx *ctx,
enum hid_report_type type,
__u8 *data,
size_t buf__sz) __ksym;
#endif /* __HID_BPF_HELPERS_H */