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| author | Eric Dumazet <edumazet@google.com> | 2023-09-12 16:02:12 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-09-15 10:33:48 +0100 |
| commit | 859f8b265fc2a11af0fb0c52b4087e0409250592 (patch) | |
| tree | 7096c954f2073480a2cb52ef4e443bac1b336679 /net/ipv6/tcp_ipv6.c | |
| parent | 6b724bc4300b431443f3b99520994a5aece347cd (diff) | |
| download | linux-stable-859f8b265fc2a11af0fb0c52b4087e0409250592.tar.gz linux-stable-859f8b265fc2a11af0fb0c52b4087e0409250592.tar.bz2 linux-stable-859f8b265fc2a11af0fb0c52b4087e0409250592.zip | |
ipv6: lockless IPV6_FLOWINFO_SEND implementation
np->sndflow reads are racy.
Use one bit ftom atomic inet->inet_flags instead,
IPV6_FLOWINFO_SEND setsockopt() can be lockless.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
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 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 201caf88bb99..94afb8d0f2d0 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -163,7 +163,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr, memset(&fl6, 0, sizeof(fl6)); - if (np->sndflow) { + if (inet6_test_bit(SNDFLOW, sk)) { fl6.flowlabel = usin->sin6_flowinfo&IPV6_FLOWINFO_MASK; IP6_ECN_flow_init(fl6.flowlabel); if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) { |