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Gerrit Renkerba4e58e2006-11-27 11:10:57 -08001/*
2 * UDPLITEv6 An implementation of the UDP-Lite protocol over IPv6.
3 * See also net/ipv4/udplite.c
4 *
Gerrit Renkerba4e58e2006-11-27 11:10:57 -08005 * 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 */
Paul Gortmakerbc3b2d72011-07-15 11:47:34 -040014#include <linux/export.h>
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080015#include "udp_impl.h"
16
Herbert Xue5bbef22007-10-15 12:50:28 -070017static int udplitev6_rcv(struct sk_buff *skb)
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080018{
Eric Dumazet645ca702008-10-29 01:41:45 -070019 return __udp6_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE);
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080020}
21
Adrian Bunkf5b99bc2006-11-30 17:22:29 -080022static void udplitev6_err(struct sk_buff *skb,
23 struct inet6_skb_parm *opt,
Brian Haleyd5fdd6b2009-06-23 04:31:07 -070024 u8 type, u8 code, int offset, __be32 info)
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080025{
Eric Dumazet645ca702008-10-29 01:41:45 -070026 __udp6_lib_err(skb, opt, type, code, offset, info, &udplite_table);
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080027}
28
Alexey Dobriyan41135cc2009-09-14 12:22:28 +000029static const struct inet6_protocol udplitev6_protocol = {
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080030 .handler = udplitev6_rcv,
31 .err_handler = udplitev6_err,
32 .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
33};
34
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080035struct 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,
Pavel Emelyanov6ba5a3c2008-03-22 16:51:21 -070051 .get_port = udp_v6_get_port,
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080052 .obj_size = sizeof(struct udp6_sock),
Eric Dumazet271b72c2008-10-29 02:11:14 -070053 .slab_flags = SLAB_DESTROY_BY_RCU,
Eric Dumazet645ca702008-10-29 01:41:45 -070054 .h.udp_table = &udplite_table,
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080055#ifdef CONFIG_COMPAT
56 .compat_setsockopt = compat_udpv6_setsockopt,
57 .compat_getsockopt = compat_udpv6_getsockopt,
58#endif
Octavian Purdilafcbdf092010-12-16 14:26:56 -080059 .clear_sk = sk_prot_clear_portaddr_nulls,
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080060};
61
62static struct inet_protosw udplite6_protosw = {
63 .type = SOCK_DGRAM,
64 .protocol = IPPROTO_UDPLITE,
65 .prot = &udplitev6_prot,
66 .ops = &inet6_dgram_ops,
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080067 .no_check = 0,
68 .flags = INET_PROTOSW_PERMANENT,
69};
70
Daniel Lezcano7f4e4862007-12-11 02:25:35 -080071int __init udplitev6_init(void)
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080072{
Daniel Lezcano7f4e4862007-12-11 02:25:35 -080073 int ret;
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080074
Daniel Lezcano7f4e4862007-12-11 02:25:35 -080075 ret = inet6_add_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
76 if (ret)
77 goto out;
78
79 ret = inet6_register_protosw(&udplite6_protosw);
80 if (ret)
81 goto out_udplitev6_protocol;
82out:
83 return ret;
84
85out_udplitev6_protocol:
86 inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
87 goto out;
88}
89
Daniel Lezcano09f77092007-12-13 05:34:58 -080090void udplitev6_exit(void)
Daniel Lezcano7f4e4862007-12-11 02:25:35 -080091{
92 inet6_unregister_protosw(&udplite6_protosw);
93 inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080094}
95
96#ifdef CONFIG_PROC_FS
Arjan van de Ven73cb88e2011-10-30 06:46:30 +000097
98static const struct file_operations udplite6_afinfo_seq_fops = {
99 .owner = THIS_MODULE,
100 .open = udp_seq_open,
101 .read = seq_read,
102 .llseek = seq_lseek,
103 .release = seq_release_net
104};
105
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800106static struct udp_seq_afinfo udplite6_seq_afinfo = {
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800107 .name = "udplite6",
108 .family = AF_INET6,
Eric Dumazet645ca702008-10-29 01:41:45 -0700109 .udp_table = &udplite_table,
Arjan van de Ven73cb88e2011-10-30 06:46:30 +0000110 .seq_fops = &udplite6_afinfo_seq_fops,
Denis V. Lunevdda61922008-03-28 18:24:26 -0700111 .seq_ops = {
112 .show = udp6_seq_show,
113 },
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800114};
115
Alexey Dobriyan2c8c1e72010-01-17 03:35:32 +0000116static int __net_init udplite6_proc_init_net(struct net *net)
Pavel Emelyanov84c375a2008-03-24 14:56:57 -0700117{
118 return udp_proc_register(net, &udplite6_seq_afinfo);
119}
120
Alexey Dobriyan2c8c1e72010-01-17 03:35:32 +0000121static void __net_exit udplite6_proc_exit_net(struct net *net)
Pavel Emelyanov84c375a2008-03-24 14:56:57 -0700122{
123 udp_proc_unregister(net, &udplite6_seq_afinfo);
124}
125
126static struct pernet_operations udplite6_net_ops = {
127 .init = udplite6_proc_init_net,
128 .exit = udplite6_proc_exit_net,
129};
130
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800131int __init udplite6_proc_init(void)
132{
Pavel Emelyanov84c375a2008-03-24 14:56:57 -0700133 return register_pernet_subsys(&udplite6_net_ops);
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800134}
135
136void udplite6_proc_exit(void)
137{
Pavel Emelyanov84c375a2008-03-24 14:56:57 -0700138 unregister_pernet_subsys(&udplite6_net_ops);
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800139}
140#endif