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l2tp: Refactor l2tp core driver to make use of the common UDP tunnel functions

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Simplify l2tp implementation using common UDP tunnel APIs.

Signed-off-by: Andy Zhou <azhou@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Zhou 2014-09-16 17:31:19 -07:00 committed by David S. Miller
parent acbf74a763
commit c8fffcea0a
1 changed files with 10 additions and 14 deletions
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22
net/l2tp/l2tp_core.c
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@ -1392,8 +1392,6 @@ static int l2tp_tunnel_sock_create(struct net *net,
if (err < 0)
goto out;
udp_set_convert_csum(sock->sk, true);
break;
case L2TP_ENCAPTYPE_IP:
@ -1584,19 +1582,17 @@ int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_id, u32
/* Mark socket as an encapsulation socket. See net/ipv4/udp.c */
tunnel->encap = encap;
if (encap == L2TP_ENCAPTYPE_UDP) {
/* Mark socket as an encapsulation socket. See net/ipv4/udp.c */
udp_sk(sk)->encap_type = UDP_ENCAP_L2TPINUDP;
udp_sk(sk)->encap_rcv = l2tp_udp_encap_recv;
udp_sk(sk)->encap_destroy = l2tp_udp_encap_destroy;
#if IS_ENABLED(CONFIG_IPV6)
if (sk->sk_family == PF_INET6 && !tunnel->v4mapped)
udpv6_encap_enable();
else
#endif
udp_encap_enable();
}
struct udp_tunnel_sock_cfg udp_cfg;
udp_cfg.sk_user_data = tunnel;
udp_cfg.encap_type = UDP_ENCAP_L2TPINUDP;
udp_cfg.encap_rcv = l2tp_udp_encap_recv;
udp_cfg.encap_destroy = l2tp_udp_encap_destroy;
setup_udp_tunnel_sock(net, sock, &udp_cfg);
} else {
sk->sk_user_data = tunnel;
}
/* Hook on the tunnel socket destructor so that we can cleanup
* if the tunnel socket goes away.