bpf: Introduce bpf_sys_bpf() helper and program type.

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Add placeholders for bpf_sys_bpf() helper and new program type.
Make sure to check that expected_attach_type is zero for future extensibility.
Allow tracing helper functions to be used in this program type, since they will
only execute from user context via bpf_prog_test_run.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210514003623.28033-2-alexei.starovoitov@gmail.com

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Alexei Starovoitov 2021-05-13 17:36:03 -07:00 • committed by Daniel Borkmann

parent fa7b83bf3b

commit 79a7f8bdb1

7 changed files with 132 additions and 0 deletions

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10

include/linux/bpf.h

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2

include/linux/bpf_types.h

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8

include/uapi/linux/bpf.h

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53

kernel/bpf/syscall.c

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8

kernel/bpf/verifier.c

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43

net/bpf/test_run.c

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8

tools/include/uapi/linux/bpf.h

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