diff options
| 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/raw.c | |
| parent | 6b724bc4300b431443f3b99520994a5aece347cd (diff) | |
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/raw.c')
| -rw-r--r-- | net/ipv6/raw.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index 47372cceb98f..a2aa54a2baae 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -795,7 +795,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) return -EINVAL; daddr = &sin6->sin6_addr; - if (np->sndflow) { + if (inet6_test_bit(SNDFLOW, sk)) { fl6.flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK; if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) { flowlabel = fl6_sock_lookup(sk, fl6.flowlabel); |