kernel/tools/testing/selftests/hid/progs/hid.c, branch linux-rolling-stable

selftests/hid: fix bpf_wq new API

2024-07-24T16:27:21Z

Since commit f56f4d541eab ("bpf: helpers: fix bpf_wq_set_callback_impl signature"), the API for bpf_wq changed a bit. We need to update the selftests/hid code to reflect that or the bpf program will not load. Link: https://patch.msgid.link/20240723-fix-6-11-bpf-v1-1-b9d770346784@kernel.org Signed-off-by: Benjamin Tissoires

selftests/hid: add an infinite loop test for hid_bpf_try_input_report

2024-06-27T09:00:49Z

We don't want this call to allow an infinite loop in HID-BPF, so let's have some tests. Link: https://patch.msgid.link/20240626-hid_hw_req_bpf-v2-13-cfd60fb6c79f@kernel.org Acked-by: Jiri Kosina Signed-off-by: Benjamin Tissoires

selftests/hid: add another test for injecting an event from an event hook

2024-06-27T09:00:49Z

Similar to test_multiply_events_wq: we receive one event and inject a new one. But given that this time we are already in the event hook, we can use hid_bpf_try_input_report() directly as this function will not sleep. Note that the injected event gets processed before the original one this way. Link: https://patch.msgid.link/20240626-hid_hw_req_bpf-v2-12-cfd60fb6c79f@kernel.org Acked-by: Jiri Kosina Signed-off-by: Benjamin Tissoires

selftests/hid: add wq test for hid_bpf_input_report()

2024-06-27T09:00:48Z

Now that bpf_wq is available, we can write a test with it. Having hid_bpf_input_report() waiting for the device means that we can directly call it, and we get that event when the device is ready. Link: https://patch.msgid.link/20240626-hid_hw_req_bpf-v2-10-cfd60fb6c79f@kernel.org Acked-by: Jiri Kosina Signed-off-by: Benjamin Tissoires

selftests/hid: add tests for hid_hw_output_report HID-BPF hooks

2024-06-27T09:00:48Z

We add 3 new tests: - first, we make sure we can prevent the output_report to happen - second, we make sure that we can detect that a given hidraw client was actually doing the request, and for that client only, call ourself hid_bpf_hw_output_report(), returning a custom value - last, we ensure that we can not loop between hooks for hid_hw_output_report() and manual calls to hid_bpf_hw_output_report() from that same hook Link: https://patch.msgid.link/20240626-hid_hw_req_bpf-v2-8-cfd60fb6c79f@kernel.org Acked-by: Jiri Kosina Signed-off-by: Benjamin Tissoires

selftests/hid: add tests for hid_hw_raw_request HID-BPF hooks

2024-06-27T09:00:12Z

We add 3 new tests: - first, we make sure we can prevent the raw_request to happen - second, we make sure that we can detect that a given hidraw client was actually doing the request, and for that client only, call ourself hid_bpf_hw_request(), returning a custom value - last, we ensure that we can not loop between hooks for hid_hw_raw_request() and manual calls to hid_bpf_hw_request() from that hook Link: https://patch.msgid.link/20240626-hid_hw_req_bpf-v2-6-cfd60fb6c79f@kernel.org Acked-by: Jiri Kosina Signed-off-by: Benjamin Tissoires

selftests/hid: add subprog call test

2024-06-14T09:20:20Z

I got a weird verifier error with a subprog once, so let's have a test for it. Link: https://lore.kernel.org/r/20240608-hid_bpf_struct_ops-v3-9-6ac6ade58329@kernel.org Signed-off-by: Benjamin Tissoires

selftests/hid: convert the hid_bpf selftests with struct_ops

2024-06-14T09:20:19Z

We drop the need for the attach() bpf syscall, but we need to set up the hid_id field before calling __load(). The .bpf.c part is mechanical: we create one struct_ops per HID-BPF program, as all the tests are for one program at a time. Link: https://lore.kernel.org/r/20240608-hid_bpf_struct_ops-v3-4-6ac6ade58329@kernel.org Signed-off-by: Benjamin Tissoires

selftests/hid: add tests for hid_bpf_input_report

2024-04-10T14:38:37Z

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

selftests/hid: Add test for hid_bpf_hw_output_report

2024-04-10T14:37:23Z

This time we need to ensure uhid receives it, thus the new mutex and condition. Link: https://lore.kernel.org/r/20240315-b4-hid-bpf-new-funcs-v4-4-079c282469d3@kernel.org Signed-off-by: Benjamin Tissoires