@@ -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)
@@ -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) */
@@ -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 */
Usual way of testing, we call the function and ensures we receive the event Signed-off-by: Benjamin Tissoires <bentiss@kernel.org> --- no changes in v3 no changes in v2 --- tools/testing/selftests/hid/hid_bpf.c | 49 +++++++++++++++++++++- tools/testing/selftests/hid/progs/hid.c | 22 ++++++++++ .../testing/selftests/hid/progs/hid_bpf_helpers.h | 4 ++ 3 files changed, 73 insertions(+), 2 deletions(-)