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| author |   Stanislav Fomichev <sdf@google.com> | 2019-08-14 10:37:48 -0700 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2019-08-17 23:18:54 +0200 |
| commit | b0e4701ce15d0381cdea0643c7f0a35dc529cec2 (patch) | |
| tree | 35f71eca49d4baa3ce31be4c830db41f60f2cb32 /include/linux/bpf.h | |
| parent | selftests/bpf: fix race in test_tcp_rtt test (diff) | |
| download | linux-dev-b0e4701ce15d0381cdea0643c7f0a35dc529cec2.tar.xz linux-dev-b0e4701ce15d0381cdea0643c7f0a35dc529cec2.zip | |
bpf: export bpf_map_inc_not_zero
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>
Diffstat (limited to 'include/linux/bpf.h')
| -rw-r--r-- | include/linux/bpf.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index f9a506147c8a..15ae49862b82 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -647,6 +647,8 @@ void bpf_map_free_id(struct bpf_map *map, bool do_idr_lock); struct bpf_map *bpf_map_get_with_uref(u32 ufd); struct bpf_map *__bpf_map_get(struct fd f); struct bpf_map * __must_check bpf_map_inc(struct bpf_map *map, bool uref); +struct bpf_map * __must_check bpf_map_inc_not_zero(struct bpf_map *map, + bool uref); void bpf_map_put_with_uref(struct bpf_map *map); void bpf_map_put(struct bpf_map *map); int bpf_map_charge_memlock(struct bpf_map *map, u32 pages); |