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| author |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-20 09:43:40 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-20 09:43:40 +0200 |
| commit | c4d41d00552754cc8cdd66a52da9b7c203884d49 (patch) | |
| tree | 60be0f3d543ad6d300a033d91dc313bc595cd737 /include/linux/skmsg.h | |
| parent | hpilo: Replace one-element array with flexible-array member (diff) | |
| parent | Linux 5.8-rc6 (diff) | |
| download | wireguard-linux-c4d41d00552754cc8cdd66a52da9b7c203884d49.tar.xz wireguard-linux-c4d41d00552754cc8cdd66a52da9b7c203884d49.zip | |
Merge v5.8-rc6 into char-misc-next
We need the char/misc fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/skmsg.h')
| -rw-r--r-- | include/linux/skmsg.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/skmsg.h b/include/linux/skmsg.h index 08674cd14d5a..1e9ed840b9fc 100644 --- a/include/linux/skmsg.h +++ b/include/linux/skmsg.h @@ -430,6 +430,19 @@ static inline void psock_set_prog(struct bpf_prog **pprog, bpf_prog_put(prog); } +static inline int psock_replace_prog(struct bpf_prog **pprog, + struct bpf_prog *prog, + struct bpf_prog *old) +{ + if (cmpxchg(pprog, old, prog) != old) + return -ENOENT; + + if (old) + bpf_prog_put(old); + + return 0; +} + static inline void psock_progs_drop(struct sk_psock_progs *progs) { psock_set_prog(&progs->msg_parser, NULL); |