[PATCH bpf-next v10 00/23] Introduce eBPF support for HID devices

[Benjamin Tissoires <benjamin.tissoires@redhat.com>]

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

-- 
2.36.1