diff options
Diffstat (limited to 'net/ipv6/datagram.c')
-rw-r--r-- | net/ipv6/datagram.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index 11e3945eeac7..9e3b0b66a4f3 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -40,7 +40,7 @@ static bool ipv6_mapped_addr_any(const struct in6_addr *a) return ipv6_addr_v4mapped(a) && (a->s6_addr32[3] == 0); } -int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) +static int __ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) { struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr; struct inet_sock *inet = inet_sk(sk); @@ -56,7 +56,7 @@ int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) if (usin->sin6_family == AF_INET) { if (__ipv6_only_sock(sk)) return -EAFNOSUPPORT; - err = ip4_datagram_connect(sk, uaddr, addr_len); + err = __ip4_datagram_connect(sk, uaddr, addr_len); goto ipv4_connected; } @@ -98,9 +98,9 @@ int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) sin.sin_addr.s_addr = daddr->s6_addr32[3]; sin.sin_port = usin->sin6_port; - err = ip4_datagram_connect(sk, - (struct sockaddr *) &sin, - sizeof(sin)); + err = __ip4_datagram_connect(sk, + (struct sockaddr *) &sin, + sizeof(sin)); ipv4_connected: if (err) @@ -167,8 +167,10 @@ ipv4_connected: security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); - opt = flowlabel ? flowlabel->opt : np->opt; + rcu_read_lock(); + opt = flowlabel ? flowlabel->opt : rcu_dereference(np->opt); final_p = fl6_update_dst(&fl6, opt, &final); + rcu_read_unlock(); dst = ip6_dst_lookup_flow(sk, &fl6, final_p); err = 0; @@ -204,6 +206,16 @@ out: fl6_sock_release(flowlabel); return err; } + +int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) +{ + int res; + + lock_sock(sk); + res = __ip6_datagram_connect(sk, uaddr, addr_len); + release_sock(sk); + return res; +} EXPORT_SYMBOL_GPL(ip6_datagram_connect); int ip6_datagram_connect_v6_only(struct sock *sk, struct sockaddr *uaddr, |