diff options
Diffstat (limited to 'net/l2tp/l2tp_ip.c')
| -rw-r--r-- | net/l2tp/l2tp_ip.c | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c index fce9bd3bd3f..81899600abe 100644 --- a/net/l2tp/l2tp_ip.c +++ b/net/l2tp/l2tp_ip.c @@ -296,12 +296,12 @@ out_in_use: static int l2tp_ip_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) { - int rc; - struct inet_sock *inet = inet_sk(sk); struct sockaddr_l2tpip *lsa = (struct sockaddr_l2tpip *) uaddr; + struct inet_sock *inet = inet_sk(sk); + struct flowi4 fl4; struct rtable *rt; __be32 saddr; - int oif; + int oif, rc; rc = -EINVAL; if (addr_len < sizeof(*lsa)) @@ -320,7 +320,7 @@ static int l2tp_ip_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len if (ipv4_is_multicast(lsa->l2tp_addr.s_addr)) goto out; - rt = ip_route_connect(lsa->l2tp_addr.s_addr, saddr, + rt = ip_route_connect(&fl4, lsa->l2tp_addr.s_addr, saddr, RT_CONN_FLAGS(sk), oif, IPPROTO_L2TP, 0, 0, sk, true); @@ -340,10 +340,10 @@ static int l2tp_ip_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len l2tp_ip_sk(sk)->peer_conn_id = lsa->l2tp_conn_id; if (!inet->inet_saddr) - inet->inet_saddr = rt->rt_src; + inet->inet_saddr = fl4.saddr; if (!inet->inet_rcv_saddr) - inet->inet_rcv_saddr = rt->rt_src; - inet->inet_daddr = rt->rt_dst; + inet->inet_rcv_saddr = fl4.saddr; + inet->inet_daddr = fl4.daddr; sk->sk_state = TCP_ESTABLISHED; inet->inet_id = jiffies; @@ -416,7 +416,6 @@ static int l2tp_ip_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m int rc; struct l2tp_ip_sock *lsa = l2tp_ip_sk(sk); struct inet_sock *inet = inet_sk(sk); - struct ip_options *opt = inet->opt; struct rtable *rt = NULL; int connected = 0; __be32 daddr; @@ -471,15 +470,23 @@ static int l2tp_ip_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m rt = (struct rtable *) __sk_dst_check(sk, 0); if (rt == NULL) { + struct ip_options_rcu *inet_opt; + struct flowi4 fl4; + + rcu_read_lock(); + inet_opt = rcu_dereference(inet->inet_opt); + /* Use correct destination address if we have options. */ - if (opt && opt->srr) - daddr = opt->faddr; + if (inet_opt && inet_opt->opt.srr) + daddr = inet_opt->opt.faddr; + + rcu_read_unlock(); /* If this fails, retransmit mechanism of transport layer will * keep trying until route appears or the connection times * itself out. */ - rt = ip_route_output_ports(sock_net(sk), sk, + rt = ip_route_output_ports(sock_net(sk), &fl4, sk, daddr, inet->inet_saddr, inet->inet_dport, inet->inet_sport, sk->sk_protocol, RT_CONN_FLAGS(sk), |