cgroup: bpf: Add BPF_MAP_TYPE_CGROUP_ARRAY

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Add a BPF_MAP_TYPE_CGROUP_ARRAY and its bpf_map_ops's implementations.
To update an element, the caller is expected to obtain a cgroup2 backed
fd by open(cgroup2_dir) and then update the array with that fd.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Tejun Heo <tj@kernel.org>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Martin KaFai Lau 2016-06-30 10:28:43 -07:00 • committed by David S. Miller

parent 1f3fe7ebf6

commit 4ed8ec521e

4 changed files with 48 additions and 1 deletions

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1

include/uapi/linux/bpf.h

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43

kernel/bpf/arraymap.c

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3

kernel/bpf/syscall.c

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2

kernel/bpf/verifier.c

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