bpfilter: remove bpfilter

bpfilter was supposed to convert iptables filtering rules into
BPF programs on the fly, from the kernel, through a usermode
helper. The base code for the UMH was introduced

bpfilter: remove bpfilter

bpfilter was supposed to convert iptables filtering rules into
BPF programs on the fly, from the kernel, through a usermode
helper. The base code for the UMH was introduced in 2018, and
couple of attempts (2, 3) tried to introduce the BPF program
generate features but were abandoned.

bpfilter now sits in a kernel tree unused and unusable, occasionally
causing confusion amongst Linux users (4, 5).

As bpfilter is now developed in a dedicated repository on GitHub (6),
it was suggested a couple of times this year (LSFMM/BPF 2023,
LPC 2023) to remove the deprecated kernel part of the project. This
is the purpose of this patch.

[1]: https://lore.kernel.org/lkml/[email protected]/
[2]: https://lore.kernel.org/bpf/[email protected]/#t
[3]: https://lore.kernel.org/lkml/[email protected]/
[4]: https://dxuuu.xyz/bpfilter.html
[5]: https://github.com/linuxkit/linuxkit/pull/3904
[6]: https://github.com/facebook/bpfilter

Signed-off-by: Quentin Deslandes <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>

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selftests: hid: import hid-tools hid-sony and hid-playstation tests

These tests have been developed in the hid-tools[0] tree for a while.
Now that we have a proper selftests/hid kernel entry and th

selftests: hid: import hid-tools hid-sony and hid-playstation tests

These tests have been developed in the hid-tools[0] tree for a while.
Now that we have a proper selftests/hid kernel entry and that the tests
are more reliable, it is time to directly include those in the kernel
tree.

The code is taken from [1] to fix a change in v6.3.

[0] https://gitlab.freedesktop.org/libevdev/hid-tools

Link: https://gitlab.freedesktop.org/libevdev/hid-tools/-/merge_requests/143 [1]
Cc: Roderick Colenbrander <[email protected]>
Cc: Jose Torreguitar <[email protected]>
Signed-off-by: Roderick Colenbrander <[email protected]>
Signed-off-by: Benjamin Tissoires <[email protected]>

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selftests: hid: import hid-tools hid-ite tests

These tests have been developed in the hid-tools[0] tree for a while.
Now that we have a proper selftests/hid kernel entry and that the tests
are more

selftests: hid: import hid-tools hid-ite tests

These tests have been developed in the hid-tools[0] tree for a while.
Now that we have a proper selftests/hid kernel entry and that the tests
are more reliable, it is time to directly include those in the kernel
tree.

[0] https://gitlab.freedesktop.org/libevdev/hid-tools

Cc: Peter Hutterer <[email protected]>
Cc: Roderick Colenbrander <[email protected]>
Signed-off-by: Peter Hutterer <[email protected]>
Signed-off-by: Roderick Colenbrander <[email protected]>
Signed-off-by: Benjamin Tissoires <[email protected]>

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selftests: hid: import hid-tools hid-apple tests

These tests have been developed in the hid-tools[0] tree for a while.
Now that we have a proper selftests/hid kernel entry and that the tests
are mo

selftests: hid: import hid-tools hid-apple tests

These tests have been developed in the hid-tools[0] tree for a while.
Now that we have a proper selftests/hid kernel entry and that the tests
are more reliable, it is time to directly include those in the kernel
tree.

[0] https://gitlab.freedesktop.org/libevdev/hid-tools

Cc: Roderick Colenbrander <[email protected]>
Signed-off-by: Roderick Colenbrander <[email protected]>
Signed-off-by: Benjamin Tissoires <[email protected]>

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selftests: hid: import hid-tools wacom tests

These tests have been developed in the hid-tools[0] tree for a while.
Now that we have a proper selftests/hid kernel entry and that the tests
are more r

selftests: hid: import hid-tools wacom tests

These tests have been developed in the hid-tools[0] tree for a while.
Now that we have a proper selftests/hid kernel entry and that the tests
are more reliable, it is time to directly include those in the kernel
tree.

[0] https://gitlab.freedesktop.org/libevdev/hid-tools

Cc: Jason Gerecke <[email protected]>
Signed-off-by: Benjamin Tissoires <[email protected]>

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selftests: hid: import hid-tools hid-multitouch and hid-tablets tests

These tests have been developed in the hid-tools[0] tree for a while.
Now that we have a proper selftests/hid kernel entry and

selftests: hid: import hid-tools hid-multitouch and hid-tablets tests

These tests have been developed in the hid-tools[0] tree for a while.
Now that we have a proper selftests/hid kernel entry and that the tests
are more reliable, it is time to directly include those in the kernel
tree.

There are a lot of multitouch tests, and the default timeout of 45 seconds
is not big enough. Bump it to 200 seconds.

[0] https://gitlab.freedesktop.org/libevdev/hid-tools

Cc: Peter Hutterer <[email protected]>
Cc: Kai-Heng Feng <[email protected]>
Cc: Roderick Colenbrander <[email protected]>
Cc: наб <[email protected]>
Cc: Blaž Hrastnik <[email protected]>
Signed-off-by: Ahelenia Ziemiańska <[email protected]>
Signed-off-by: Peter Hutterer <[email protected]>
Signed-off-by: Roderick Colenbrander <[email protected]>
Signed-off-by: Benjamin Tissoires <[email protected]>

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selftest: hid: fix hid_bpf not set in config

Now that CONFIG_HID_BPF is not automatically implied by HID, we need
to set it properly in the selftests config.

Signed-off-by: Benjamin Tissoires <benj

selftest: hid: fix hid_bpf not set in config

Now that CONFIG_HID_BPF is not automatically implied by HID, we need
to set it properly in the selftests config.

Signed-off-by: Benjamin Tissoires <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

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selftests: hid: ensures we have the proper requirements in config

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 surpr

selftests: hid: ensures we have the proper requirements in config

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 <[email protected]>
Reviewed-by: Jiri Kosina <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

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selftests: add tests for the HID-bpf initial implementation

The tests are pretty basic:
- create a virtual uhid device that no userspace will like (to not mess
up the running system)
- attach a BP

selftests: add tests for the HID-bpf initial implementation

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 <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

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