diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-05-28 07:12:31 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-28 11:11:45 -0700 |
| commit | 9b115749acb24d11083ded4fe947ddd654a940e3 (patch) | |
| tree | 8667571df0465bf10b1d72a641df77ac916dd773 /include/net | |
| parent | c1f9ec5776dd05eaf62cf6788ecdfc905dc8ec2b (diff) | |
ipv6: add ip6_sock_set_v6only
Add a helper to directly set the IPV6_V6ONLY sockopt from kernel space
without going through a fake uaccess.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/ipv6.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 39a00d3ef5e2..9b91188c9a74 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -1177,4 +1177,15 @@ int ipv6_sock_mc_join_ssm(struct sock *sk, int ifindex, const struct in6_addr *addr, unsigned int mode); int ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *addr); + +static inline int ip6_sock_set_v6only(struct sock *sk) +{ + if (inet_sk(sk)->inet_num) + return -EINVAL; + lock_sock(sk); + sk->sk_ipv6only = true; + release_sock(sk); + return 0; +} + #endif /* _NET_IPV6_H */ |