diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-09-12 18:02:12 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-09-15 11:33:48 +0200 |
| commit | 859f8b265fc2a11af0fb0c52b4087e0409250592 (patch) | |
| tree | 7096c954f2073480a2cb52ef4e443bac1b336679 /net/ipv6/ping.c | |
| parent | ipv6: lockless IPV6_MTU_DISCOVER implementation (diff) | |
| download | linux-859f8b265fc2a11af0fb0c52b4087e0409250592.tar.xz linux-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/ping.c')
| -rw-r--r-- | net/ipv6/ping.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c index 4444b61eb23b..e8fb0d275cc2 100644 --- a/net/ipv6/ping.c +++ b/net/ipv6/ping.c @@ -89,7 +89,7 @@ static int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) return -EAFNOSUPPORT; } daddr = &(u->sin6_addr); - if (np->sndflow) + if (inet6_test_bit(SNDFLOW, sk)) fl6.flowlabel = u->sin6_flowinfo & IPV6_FLOWINFO_MASK; if (__ipv6_addr_needs_scope_id(ipv6_addr_type(daddr))) oif = u->sin6_scope_id; |