diff options
Diffstat (limited to 'net/ipv6/ip6mr.c')
| -rw-r--r-- | net/ipv6/ip6mr.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index 8e483e14b570..fd660414d482 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -1567,15 +1567,17 @@ static int ip6mr_sk_init(struct mr_table *mrt, struct sock *sk) int ip6mr_sk_done(struct sock *sk) { - int err = -EACCES; struct net *net = sock_net(sk); + struct ipv6_devconf *devconf; struct mr_table *mrt; + int err = -EACCES; if (sk->sk_type != SOCK_RAW || inet_sk(sk)->inet_num != IPPROTO_ICMPV6) return err; - if (!atomic_read(&net->ipv6.devconf_all->mc_forwarding)) + devconf = net->ipv6.devconf_all; + if (!devconf || !atomic_read(&devconf->mc_forwarding)) return err; rtnl_lock(); @@ -1587,7 +1589,7 @@ int ip6mr_sk_done(struct sock *sk) * so the RCU grace period before sk freeing * is guaranteed by sk_destruct() */ - atomic_dec(&net->ipv6.devconf_all->mc_forwarding); + atomic_dec(&devconf->mc_forwarding); write_unlock_bh(&mrt_lock); inet6_netconf_notify_devconf(net, RTM_NEWNETCONF, NETCONFA_MC_FORWARDING, |