1/*
2 *  UDPLITEv6   An implementation of the UDP-Lite protocol over IPv6.
3 *              See also net/ipv4/udplite.c
4 *
5 *  Authors:    Gerrit Renker       <gerrit@erg.abdn.ac.uk>
6 *
7 *  Changes:
8 *  Fixes:
9 *		This program is free software; you can redistribute it and/or
10 *		modify it under the terms of the GNU General Public License
11 *		as published by the Free Software Foundation; either version
12 *		2 of the License, or (at your option) any later version.
13 */
14#include <linux/export.h>
15#include "udp_impl.h"
16
17static int udplitev6_rcv(struct sk_buff *skb)
18{
19	return __udp6_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE);
20}
21
22static void udplitev6_err(struct sk_buff *skb,
23			  struct inet6_skb_parm *opt,
24			  u8 type, u8 code, int offset, __be32 info)
25{
26	__udp6_lib_err(skb, opt, type, code, offset, info, &udplite_table);
27}
28
29static const struct inet6_protocol udplitev6_protocol = {
30	.handler	=	udplitev6_rcv,
31	.err_handler	=	udplitev6_err,
32	.flags		=	INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
33};
34
35struct proto udplitev6_prot = {
36	.name		   = "UDPLITEv6",
37	.owner		   = THIS_MODULE,
38	.close		   = udp_lib_close,
39	.connect	   = ip6_datagram_connect,
40	.disconnect	   = udp_disconnect,
41	.ioctl		   = udp_ioctl,
42	.init		   = udplite_sk_init,
43	.destroy	   = udpv6_destroy_sock,
44	.setsockopt	   = udpv6_setsockopt,
45	.getsockopt	   = udpv6_getsockopt,
46	.sendmsg	   = udpv6_sendmsg,
47	.recvmsg	   = udpv6_recvmsg,
48	.backlog_rcv	   = udpv6_queue_rcv_skb,
49	.hash		   = udp_lib_hash,
50	.unhash		   = udp_lib_unhash,
51	.get_port	   = udp_v6_get_port,
52	.obj_size	   = sizeof(struct udp6_sock),
53	.slab_flags	   = SLAB_DESTROY_BY_RCU,
54	.h.udp_table	   = &udplite_table,
55#ifdef CONFIG_COMPAT
56	.compat_setsockopt = compat_udpv6_setsockopt,
57	.compat_getsockopt = compat_udpv6_getsockopt,
58#endif
59	.clear_sk	   = udp_v6_clear_sk,
60};
61
62static struct inet_protosw udplite6_protosw = {
63	.type		= SOCK_DGRAM,
64	.protocol	= IPPROTO_UDPLITE,
65	.prot		= &udplitev6_prot,
66	.ops		= &inet6_dgram_ops,
67	.flags		= INET_PROTOSW_PERMANENT,
68};
69
70int __init udplitev6_init(void)
71{
72	int ret;
73
74	ret = inet6_add_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
75	if (ret)
76		goto out;
77
78	ret = inet6_register_protosw(&udplite6_protosw);
79	if (ret)
80		goto out_udplitev6_protocol;
81out:
82	return ret;
83
84out_udplitev6_protocol:
85	inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
86	goto out;
87}
88
89void udplitev6_exit(void)
90{
91	inet6_unregister_protosw(&udplite6_protosw);
92	inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
93}
94
95#ifdef CONFIG_PROC_FS
96
97static const struct file_operations udplite6_afinfo_seq_fops = {
98	.owner    = THIS_MODULE,
99	.open     = udp_seq_open,
100	.read     = seq_read,
101	.llseek   = seq_lseek,
102	.release  = seq_release_net
103};
104
105static struct udp_seq_afinfo udplite6_seq_afinfo = {
106	.name		= "udplite6",
107	.family		= AF_INET6,
108	.udp_table	= &udplite_table,
109	.seq_fops	= &udplite6_afinfo_seq_fops,
110	.seq_ops	= {
111		.show		= udp6_seq_show,
112	},
113};
114
115static int __net_init udplite6_proc_init_net(struct net *net)
116{
117	return udp_proc_register(net, &udplite6_seq_afinfo);
118}
119
120static void __net_exit udplite6_proc_exit_net(struct net *net)
121{
122	udp_proc_unregister(net, &udplite6_seq_afinfo);
123}
124
125static struct pernet_operations udplite6_net_ops = {
126	.init = udplite6_proc_init_net,
127	.exit = udplite6_proc_exit_net,
128};
129
130int __init udplite6_proc_init(void)
131{
132	return register_pernet_subsys(&udplite6_net_ops);
133}
134
135void udplite6_proc_exit(void)
136{
137	unregister_pernet_subsys(&udplite6_net_ops);
138}
139#endif
140