Hi,
here comes the v10 of the HID-BPF series.
Again, for a full explanation of HID-BPF, please refer to the last patch in this series (23/23).
Hopefully we are getting closer to merging the bpf-core changes that are pre-requesite of the HID work.
This revision of the series focused on those bpf-core changes with a hopefully proper way of fixing access to ctx pointers, and a few more selftests to cover those changes.
Once those bpf changes are in, the HID changes are pretty much self consistent, which is a good thing, but I still wonder how we are going to merge the selftests. I'd rather have the selftests in the bpf tree to prevent any regression on bpf-core changes, but that might require some coordination between the HID and bpf trees.
Anyway, let's hope we are getting closer to the end of those revisions :)
Cheers, Benjamin
Benjamin Tissoires (23): selftests/bpf: regroup and declare similar kfuncs selftests in an array bpf: split btf_check_subprog_arg_match in two bpf/verifier: allow all functions to read user provided context selftests/bpf: add test for accessing ctx from syscall program type bpf/btf: bump BTF_KFUNC_SET_MAX_CNT bpf/verifier: allow kfunc to return an allocated mem selftests/bpf: Add tests for kfunc returning a memory pointer HID: core: store the unique system identifier in hid_device HID: export hid_report_type to uapi HID: convert defines of HID class requests into a proper enum HID: Kconfig: split HID support and hid-core compilation HID: initial BPF implementation selftests/bpf: add tests for the HID-bpf initial implementation HID: bpf: allocate data memory for device_event BPF programs selftests/bpf/hid: add test to change the report size HID: bpf: introduce hid_hw_request() selftests/bpf: add tests for bpf_hid_hw_request HID: bpf: allow to change the report descriptor selftests/bpf: add report descriptor fixup tests selftests/bpf: Add a test for BPF_F_INSERT_HEAD samples/bpf: HID: add new hid_mouse example samples/bpf: HID: add Surface Dial example Documentation: add HID-BPF docs
Documentation/hid/hid-bpf.rst | 513 +++++++++ Documentation/hid/index.rst | 1 + drivers/Makefile | 2 +- drivers/hid/Kconfig | 20 +- drivers/hid/Makefile | 2 + drivers/hid/bpf/Kconfig | 17 + drivers/hid/bpf/Makefile | 11 + drivers/hid/bpf/entrypoints/Makefile | 93 ++ drivers/hid/bpf/entrypoints/README | 4 + drivers/hid/bpf/entrypoints/entrypoints.bpf.c | 66 ++ .../hid/bpf/entrypoints/entrypoints.lskel.h | 682 ++++++++++++ drivers/hid/bpf/hid_bpf_dispatch.c | 526 ++++++++++ drivers/hid/bpf/hid_bpf_dispatch.h | 28 + drivers/hid/bpf/hid_bpf_jmp_table.c | 577 ++++++++++ drivers/hid/hid-core.c | 49 +- include/linux/bpf.h | 11 +- include/linux/bpf_verifier.h | 2 + include/linux/btf.h | 10 + include/linux/hid.h | 38 +- include/linux/hid_bpf.h | 148 +++ include/uapi/linux/hid.h | 26 +- include/uapi/linux/hid_bpf.h | 25 + kernel/bpf/btf.c | 149 ++- kernel/bpf/verifier.c | 66 +- net/bpf/test_run.c | 37 + samples/bpf/.gitignore | 2 + samples/bpf/Makefile | 27 + samples/bpf/hid_mouse.bpf.c | 134 +++ samples/bpf/hid_mouse.c | 161 +++ samples/bpf/hid_surface_dial.bpf.c | 161 +++ samples/bpf/hid_surface_dial.c | 232 ++++ tools/include/uapi/linux/hid.h | 62 ++ tools/include/uapi/linux/hid_bpf.h | 25 + tools/testing/selftests/bpf/Makefile | 2 +- tools/testing/selftests/bpf/config | 3 + tools/testing/selftests/bpf/prog_tests/hid.c | 990 ++++++++++++++++++ .../selftests/bpf/prog_tests/kfunc_call.c | 182 +++- tools/testing/selftests/bpf/progs/hid.c | 206 ++++ .../selftests/bpf/progs/kfunc_call_fail.c | 160 +++ .../selftests/bpf/progs/kfunc_call_test.c | 71 ++ 40 files changed, 5416 insertions(+), 105 deletions(-) create mode 100644 Documentation/hid/hid-bpf.rst create mode 100644 drivers/hid/bpf/Kconfig create mode 100644 drivers/hid/bpf/Makefile create mode 100644 drivers/hid/bpf/entrypoints/Makefile create mode 100644 drivers/hid/bpf/entrypoints/README create mode 100644 drivers/hid/bpf/entrypoints/entrypoints.bpf.c create mode 100644 drivers/hid/bpf/entrypoints/entrypoints.lskel.h create mode 100644 drivers/hid/bpf/hid_bpf_dispatch.c create mode 100644 drivers/hid/bpf/hid_bpf_dispatch.h create mode 100644 drivers/hid/bpf/hid_bpf_jmp_table.c create mode 100644 include/linux/hid_bpf.h create mode 100644 include/uapi/linux/hid_bpf.h create mode 100644 samples/bpf/hid_mouse.bpf.c create mode 100644 samples/bpf/hid_mouse.c create mode 100644 samples/bpf/hid_surface_dial.bpf.c create mode 100644 samples/bpf/hid_surface_dial.c create mode 100644 tools/include/uapi/linux/hid.h create mode 100644 tools/include/uapi/linux/hid_bpf.h create mode 100644 tools/testing/selftests/bpf/prog_tests/hid.c create mode 100644 tools/testing/selftests/bpf/progs/hid.c create mode 100644 tools/testing/selftests/bpf/progs/kfunc_call_fail.c