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2022-12-10selftests: hid: ensures we have the proper requirements in configBenjamin Tissoires
DYNAMIC_FTRACE_WITH_DIRECT_CALLS is implicit on x86_64 but is still a WIP on aarm64. Ensure we get it selected to not have any surprises. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: Jiri Kosina <jkosina@suse.cz> Link: https://lore.kernel.org/r/20221206145936.922196-5-benjamin.tissoires@redhat.com
2022-11-15selftests/hid: Add a test for BPF_F_INSERT_HEADBenjamin Tissoires
Insert 3 programs to check that we are doing the correct thing: '2', '1', '3' are inserted, but '1' is supposed to be executed first. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2022-11-15selftests/hid: add report descriptor fixup testsBenjamin Tissoires
Simple report descriptor override in HID: replace part of the report descriptor from a static definition in the bpf kernel program. Note that this test should be run last because we disconnect/reconnect the device, meaning that it changes the overall uhid device. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2022-11-15selftests/hid: add tests for bpf_hid_hw_requestBenjamin Tissoires
Add tests for the newly implemented function. We test here only the GET_REPORT part because the other calls are pure HID protocol and won't infer the result of the test of the bpf hook. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2022-11-15selftests/hid: add test to change the report sizeBenjamin Tissoires
Use a different report with a bigger size and ensures we are doing things properly. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2022-11-15selftests: add tests for the HID-bpf initial implementationBenjamin Tissoires
The tests are pretty basic: - create a virtual uhid device that no userspace will like (to not mess up the running system) - attach a BPF prog to it - open the matching hidraw node - inject one event and check: * that the BPF program can do something on the event stream * can modify the event stream - add another test where we attach/detach BPF programs to see if we get errors Note: the Makefile is extracted from selftests/bpf so we can rebuild the libbpf and bpftool components from the current kernel tree without relying on system installed components. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>