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authorJames Chapman <jchapman@katalix.com>2012-04-30 01:48:47 +0400
committerDavid S. Miller <davem@davemloft.net>2012-05-01 17:30:54 +0400
commitde3c7a1827fa144917270eb66956930012ddae52 (patch)
tree45aa11eafb79423c2aedadcc94de14223954afa2 /net/l2tp
parent5de7aee5413cdfe6f96289a84a5ad22b1314e873 (diff)
downloadlinux-de3c7a1827fa144917270eb66956930012ddae52.tar.xz
l2tp: Use ip4_datagram_connect() in l2tp_ip_connect()
Cleanup the l2tp_ip code to make use of an existing ipv4 support function. Signed-off-by: James Chapman <jchapman@katalix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp')
-rw-r--r--net/l2tp/l2tp_ip.c54
1 files changed, 7 insertions, 47 deletions
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
index 585d93ecee2d..516259284846 100644
--- a/net/l2tp/l2tp_ip.c
+++ b/net/l2tp/l2tp_ip.c
@@ -299,67 +299,27 @@ static int l2tp_ip_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len
{
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, rc;
+ int rc;
- rc = -EINVAL;
if (addr_len < sizeof(*lsa))
- goto out;
+ return -EINVAL;
- rc = -EAFNOSUPPORT;
- if (lsa->l2tp_family != AF_INET)
- goto out;
-
- lock_sock(sk);
-
- sk_dst_reset(sk);
-
- oif = sk->sk_bound_dev_if;
- saddr = inet->inet_saddr;
-
- rc = -EINVAL;
if (ipv4_is_multicast(lsa->l2tp_addr.s_addr))
- goto out;
+ return -EINVAL;
- fl4 = &inet->cork.fl.u.ip4;
- rt = ip_route_connect(fl4, lsa->l2tp_addr.s_addr, saddr,
- RT_CONN_FLAGS(sk), oif,
- IPPROTO_L2TP,
- 0, 0, sk, true);
- if (IS_ERR(rt)) {
- rc = PTR_ERR(rt);
- if (rc == -ENETUNREACH)
- IP_INC_STATS_BH(&init_net, IPSTATS_MIB_OUTNOROUTES);
- goto out;
- }
+ rc = ip4_datagram_connect(sk, uaddr, addr_len);
+ if (rc < 0)
+ return rc;
- rc = -ENETUNREACH;
- if (rt->rt_flags & (RTCF_MULTICAST | RTCF_BROADCAST)) {
- ip_rt_put(rt);
- goto out;
- }
+ lock_sock(sk);
l2tp_ip_sk(sk)->peer_conn_id = lsa->l2tp_conn_id;
- if (!inet->inet_saddr)
- inet->inet_saddr = fl4->saddr;
- if (!inet->inet_rcv_saddr)
- inet->inet_rcv_saddr = fl4->saddr;
- inet->inet_daddr = fl4->daddr;
- sk->sk_state = TCP_ESTABLISHED;
- inet->inet_id = jiffies;
-
- sk_dst_set(sk, &rt->dst);
-
write_lock_bh(&l2tp_ip_lock);
hlist_del_init(&sk->sk_bind_node);
sk_add_bind_node(sk, &l2tp_ip_bind_table);
write_unlock_bh(&l2tp_ip_lock);
- rc = 0;
-out:
release_sock(sk);
return rc;
}