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| author | Eric Dumazet <edumazet@google.com> | 2023-09-21 20:28:11 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-10-01 19:09:54 +0100 |
| commit | 10bbf1652c1cca9819e98d56f3432c56d7a2d229 (patch) | |
| tree | ab9494c905436ea6f2b9fa1bb979addd2d58da71 /net/ipv6/tcp_ipv6.c | |
| parent | 06bc3668cc2a6db2831b9086f0e3c6ebda599dba (diff) | |
| download | linux-stable-10bbf1652c1cca9819e98d56f3432c56d7a2d229.tar.gz linux-stable-10bbf1652c1cca9819e98d56f3432c56d7a2d229.tar.bz2 linux-stable-10bbf1652c1cca9819e98d56f3432c56d7a2d229.zip | |
net: implement lockless SO_PRIORITY
This is a followup of 8bf43be799d4 ("net: annotate data-races
around sk->sk_priority").
sk->sk_priority can be read and written without holding the socket lock.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 94afb8d0f2d0..8a6e2e97f673 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -565,7 +565,7 @@ static int tcp_v6_send_synack(const struct sock *sk, struct dst_entry *dst, if (!opt) opt = rcu_dereference(np->opt); err = ip6_xmit(sk, skb, fl6, skb->mark ? : READ_ONCE(sk->sk_mark), - opt, tclass, sk->sk_priority); + opt, tclass, READ_ONCE(sk->sk_priority)); rcu_read_unlock(); err = net_xmit_eval(err); } @@ -1058,7 +1058,7 @@ static void tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb) trace_tcp_send_reset(sk, skb); if (inet6_test_bit(REPFLOW, sk)) label = ip6_flowlabel(ipv6h); - priority = sk->sk_priority; + priority = READ_ONCE(sk->sk_priority); txhash = sk->sk_txhash; } if (sk->sk_state == TCP_TIME_WAIT) { |