diff options
| -rw-r--r-- | net/l2tp/l2tp_ip.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c index 81899600abe..bd0cc0b8f32 100644 --- a/net/l2tp/l2tp_ip.c +++ b/net/l2tp/l2tp_ip.c @@ -311,6 +311,8 @@ static int l2tp_ip_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len if (lsa->l2tp_family != AF_INET) goto out; + lock_sock(sk); + sk_dst_reset(sk); oif = sk->sk_bound_dev_if; @@ -356,6 +358,7 @@ static int l2tp_ip_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len rc = 0; out: + release_sock(sk); return rc; } @@ -420,18 +423,23 @@ static int l2tp_ip_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m int connected = 0; __be32 daddr; + lock_sock(sk); + + rc = -ENOTCONN; if (sock_flag(sk, SOCK_DEAD)) - return -ENOTCONN; + goto out; /* Get and verify the address. */ if (msg->msg_name) { struct sockaddr_l2tpip *lip = (struct sockaddr_l2tpip *) msg->msg_name; + rc = -EINVAL; if (msg->msg_namelen < sizeof(*lip)) - return -EINVAL; + goto out; if (lip->l2tp_family != AF_INET) { + rc = -EAFNOSUPPORT; if (lip->l2tp_family != AF_UNSPEC) - return -EAFNOSUPPORT; + goto out; } daddr = lip->l2tp_addr.s_addr; @@ -510,12 +518,15 @@ error: lsa->tx_errors++; } +out: + release_sock(sk); return rc; no_route: IP_INC_STATS(sock_net(sk), IPSTATS_MIB_OUTNOROUTES); kfree_skb(skb); - return -EHOSTUNREACH; + rc = -EHOSTUNREACH; + goto out; } static int l2tp_ip_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, |