Hi,
and after a little bit of time, here comes the v6 of the HID-BPF series.
Again, for a full explanation of HID-BPF, please refer to the last patch
in this series (23/23).
This version sees some improvements compared to v5 on top of the
usual addressing of the previous comments:
- now I think every eBPF core change has a matching selftest added
- the kfuncs declared in syscall can now actually access the memory of
the context
- the code to retrieve the BTF ID of the various HID hooks is much
simpler (just a plain use of the BTF_ID() API instead of
loading/unloading of a tracing program)
- I also added my HID Surface Dial example that I use locally to provide
a fuller example to users
Cheers,
Benjamin
Benjamin Tissoires (23):
selftests/bpf: fix config for CLS_BPF
bpf/verifier: allow kfunc to read user provided context
bpf/verifier: do not clear meta in check_mem_size
selftests/bpf: add test for accessing ctx from syscall program type
bpf/verifier: allow kfunc to return an allocated mem
selftests/bpf: Add tests for kfunc returning a memory pointer
bpf: prepare for more bpf syscall to be used from kernel and user
space.
libbpf: add map_get_fd_by_id and map_delete_elem in light skeleton
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: 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: add new hid_mouse example
HID: bpf: add Surface Dial example
Documentation: add HID-BPF docs
Documentation/hid/hid-bpf.rst | 512 +++++++++
Documentation/hid/index.rst | 1 +
drivers/hid/Kconfig | 2 +
drivers/hid/Makefile | 2 +
drivers/hid/bpf/Kconfig | 19 +
drivers/hid/bpf/Makefile | 11 +
drivers/hid/bpf/entrypoints/Makefile | 88 ++
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 | 554 ++++++++++
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 | 10 +-
include/linux/btf.h | 14 +
include/linux/hid.h | 38 +-
include/linux/hid_bpf.h | 145 +++
include/uapi/linux/hid.h | 26 +-
include/uapi/linux/hid_bpf.h | 25 +
kernel/bpf/btf.c | 67 +-
kernel/bpf/syscall.c | 10 +-
kernel/bpf/verifier.c | 67 +-
net/bpf/test_run.c | 23 +
samples/bpf/.gitignore | 2 +
samples/bpf/Makefile | 27 +
samples/bpf/hid_mouse.bpf.c | 134 +++
samples/bpf/hid_mouse.c | 150 +++
samples/bpf/hid_surface_dial.bpf.c | 161 +++
samples/bpf/hid_surface_dial.c | 216 ++++
tools/include/uapi/linux/hid.h | 62 ++
tools/include/uapi/linux/hid_bpf.h | 25 +
tools/lib/bpf/skel_internal.h | 23 +
tools/testing/selftests/bpf/Makefile | 5 +-
tools/testing/selftests/bpf/config | 5 +-
tools/testing/selftests/bpf/prog_tests/hid.c | 990 ++++++++++++++++++
.../selftests/bpf/prog_tests/kfunc_call.c | 68 ++
tools/testing/selftests/bpf/progs/hid.c | 206 ++++
.../selftests/bpf/progs/kfunc_call_test.c | 116 ++
39 files changed, 5150 insertions(+), 60 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
--
2.36.1
