Merge branches 'core/futexes', 'core/locking', 'core/rcu' and 'linus' into core/urgent
[linux-2.6] / net / ipv6 / udplite.c
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 "udp_impl.h"
15
16 static int udplitev6_rcv(struct sk_buff *skb)
17 {
18         return __udp6_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE);
19 }
20
21 static void udplitev6_err(struct sk_buff *skb,
22                           struct inet6_skb_parm *opt,
23                           int type, int code, int offset, __be32 info)
24 {
25         __udp6_lib_err(skb, opt, type, code, offset, info, &udplite_table);
26 }
27
28 static struct inet6_protocol udplitev6_protocol = {
29         .handler        =       udplitev6_rcv,
30         .err_handler    =       udplitev6_err,
31         .flags          =       INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
32 };
33
34 struct proto udplitev6_prot = {
35         .name              = "UDPLITEv6",
36         .owner             = THIS_MODULE,
37         .close             = udp_lib_close,
38         .connect           = ip6_datagram_connect,
39         .disconnect        = udp_disconnect,
40         .ioctl             = udp_ioctl,
41         .init              = udplite_sk_init,
42         .destroy           = udpv6_destroy_sock,
43         .setsockopt        = udpv6_setsockopt,
44         .getsockopt        = udpv6_getsockopt,
45         .sendmsg           = udpv6_sendmsg,
46         .recvmsg           = udpv6_recvmsg,
47         .backlog_rcv       = udpv6_queue_rcv_skb,
48         .hash              = udp_lib_hash,
49         .unhash            = udp_lib_unhash,
50         .get_port          = udp_v6_get_port,
51         .obj_size          = sizeof(struct udp6_sock),
52         .slab_flags        = SLAB_DESTROY_BY_RCU,
53         .h.udp_table       = &udplite_table,
54 #ifdef CONFIG_COMPAT
55         .compat_setsockopt = compat_udpv6_setsockopt,
56         .compat_getsockopt = compat_udpv6_getsockopt,
57 #endif
58 };
59
60 static struct inet_protosw udplite6_protosw = {
61         .type           = SOCK_DGRAM,
62         .protocol       = IPPROTO_UDPLITE,
63         .prot           = &udplitev6_prot,
64         .ops            = &inet6_dgram_ops,
65         .capability     = -1,
66         .no_check       = 0,
67         .flags          = INET_PROTOSW_PERMANENT,
68 };
69
70 int __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;
81 out:
82         return ret;
83
84 out_udplitev6_protocol:
85         inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
86         goto out;
87 }
88
89 void 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 static struct udp_seq_afinfo udplite6_seq_afinfo = {
97         .name           = "udplite6",
98         .family         = AF_INET6,
99         .udp_table      = &udplite_table,
100         .seq_fops       = {
101                 .owner  =       THIS_MODULE,
102         },
103         .seq_ops        = {
104                 .show           = udp6_seq_show,
105         },
106 };
107
108 static int udplite6_proc_init_net(struct net *net)
109 {
110         return udp_proc_register(net, &udplite6_seq_afinfo);
111 }
112
113 static void udplite6_proc_exit_net(struct net *net)
114 {
115         udp_proc_unregister(net, &udplite6_seq_afinfo);
116 }
117
118 static struct pernet_operations udplite6_net_ops = {
119         .init = udplite6_proc_init_net,
120         .exit = udplite6_proc_exit_net,
121 };
122
123 int __init udplite6_proc_init(void)
124 {
125         return register_pernet_subsys(&udplite6_net_ops);
126 }
127
128 void udplite6_proc_exit(void)
129 {
130         unregister_pernet_subsys(&udplite6_net_ops);
131 }
132 #endif