diff options
| author |   Eric Dumazet <edumazet@google.com> | 2021-10-25 09:48:20 -0700 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2021-10-25 18:02:13 -0700 |
| commit | 09b898466792b0c387040e6df90a16e7a9f2a5d9 (patch) | |
| tree | f59306eb7b70c5d168db4b2e3ae087320431c671 /include/net/sock.h | |
| parent | net: avoid dirtying sk->sk_rx_queue_mapping (diff) | |
| download | linux-dev-09b898466792b0c387040e6df90a16e7a9f2a5d9.tar.xz linux-dev-09b898466792b0c387040e6df90a16e7a9f2a5d9.zip | |
net: annotate accesses to sk->sk_rx_queue_mapping
sk->sk_rx_queue_mapping can be modified locklessly,
add a couple of READ_ONCE()/WRITE_ONCE() to document this fact.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index b4d3744b188a..b76be30674ef 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1925,15 +1925,19 @@ static inline void sk_rx_queue_set(struct sock *sk, const struct sk_buff *skb) static inline void sk_rx_queue_clear(struct sock *sk) { #ifdef CONFIG_SOCK_RX_QUEUE_MAPPING - sk->sk_rx_queue_mapping = NO_QUEUE_MAPPING; + WRITE_ONCE(sk->sk_rx_queue_mapping, NO_QUEUE_MAPPING); #endif } static inline int sk_rx_queue_get(const struct sock *sk) { #ifdef CONFIG_SOCK_RX_QUEUE_MAPPING - if (sk && sk->sk_rx_queue_mapping != NO_QUEUE_MAPPING) - return sk->sk_rx_queue_mapping; + if (sk) { + int res = READ_ONCE(sk->sk_rx_queue_mapping); + + if (res != NO_QUEUE_MAPPING) + return res; + } #endif return -1; |