bpf: Refactor bpf_link update handling

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Make bpf_link update support more generic by making it into another
bpf_link_ops methods. This allows generic syscall handling code to be agnostic
to various conditionally compiled features (e.g., the case of
CONFIG_CGROUP_BPF). This also allows to keep link type-specific code to remain
static within respective code base. Refactor existing bpf_cgroup_link code and
take advantage of this.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200429001614.1544-2-andriin@fb.com

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Andrii Nakryiko 2020-04-28 17:16:05 -07:00 • committed by Alexei Starovoitov

parent 9b329d0dbe

commit f9d041271c

5 changed files with 34 additions and 49 deletions

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12

include/linux/bpf-cgroup.h

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3

include/linux/bpf.h

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30

kernel/bpf/cgroup.c

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11

kernel/bpf/syscall.c

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27

kernel/cgroup/cgroup.c

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