bpf: export bpf_map_inc_not_zero

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Rename existing bpf_map_inc_not_zero to __bpf_map_inc_not_zero to
indicate that it's caller's responsibility to do proper locking.
Create and export bpf_map_inc_not_zero wrapper that properly
locks map_idr_lock. Will be used in the next commit to
hold a map while cloning a socket.

Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Yonghong Song <yhs@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Stanislav Fomichev 2019-08-14 10:37:48 -07:00 • committed by Daniel Borkmann

parent fae55527ac

commit b0e4701ce1

2 changed files with 15 additions and 3 deletions

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2

include/linux/bpf.h

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16

kernel/bpf/syscall.c

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