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Commit c8fffcea authored by Andy Zhou's avatar Andy Zhou Committed by David S. Miller
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l2tp: Refactor l2tp core driver to make use of the common UDP tunnel functions 



Simplify l2tp implementation using common UDP tunnel APIs.

Signed-off-by: default avatarAndy Zhou <azhou@nicira.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent acbf74a7

net/l2tp/l2tp_core.c

+10 −14
Original line number Diff line number Diff line
@@ -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.