Commit 09b89846 authored by Eric Dumazet's avatar Eric Dumazet Committed by Jakub Kicinski
Browse files

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: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 342159ee

include/net/sock.h

+7 −3
Original line number Diff line number Diff line
@@ -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;