HID: bpf: allow to change the report descriptor

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Add a new tracepoint hid_bpf_rdesc_fixup() so we can trigger a
report descriptor fixup in the bpf world.

Whenever the program gets attached/detached, the device is reconnected
meaning that userspace will see it disappearing and reappearing with
the new report descriptor.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

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Benjamin Tissoires 2022-11-03 16:57:51 +01:00 • committed by Jiri Kosina

parent 4f7153cf46

commit ad190df11a

5 changed files with 97 additions and 2 deletions

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80

drivers/hid/bpf/hid_bpf_dispatch.c

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1

drivers/hid/bpf/hid_bpf_dispatch.h

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7

drivers/hid/bpf/hid_bpf_jmp_table.c

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3

drivers/hid/hid-core.c

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8

include/linux/hid_bpf.h

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