diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-09-22 03:42:14 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-10-01 19:39:18 +0100 |
| commit | c9746e6a19c24b2d9a74d6657daee3b39fdc1bec (patch) | |
| tree | 0c4c1653ac642f05004c576ce39640e3cc055011 /net/netfilter/ipvs/ip_vs_sync.c | |
| parent | 2be825ebb9d1b17f1a9e46af78d24b76c4ff7a1f (diff) | |
inet: implement lockless IP_MULTICAST_TTL
inet->mc_ttl can be read locklessly.
Implement proper lockless reads and writes to inet->mc_ttl
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/netfilter/ipvs/ip_vs_sync.c')
| -rw-r--r-- | net/netfilter/ipvs/ip_vs_sync.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c index 5820a8156c47..3eed16702248 100644 --- a/net/netfilter/ipvs/ip_vs_sync.c +++ b/net/netfilter/ipvs/ip_vs_sync.c @@ -1316,7 +1316,7 @@ static void set_mcast_ttl(struct sock *sk, u_char ttl) /* setsockopt(sock, SOL_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl)); */ lock_sock(sk); - inet->mc_ttl = ttl; + WRITE_ONCE(inet->mc_ttl, ttl); #ifdef CONFIG_IP_VS_IPV6 if (sk->sk_family == AF_INET6) { struct ipv6_pinfo *np = inet6_sk(sk); |