Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/chrisw...
[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  *  Version:    $Id: udplite.c,v 1.9 2006/10/19 08:28:10 gerrit Exp $
6  *
7  *  Authors:    Gerrit Renker       <gerrit@erg.abdn.ac.uk>
8  *
9  *  Changes:
10  *  Fixes:
11  *              This program is free software; you can redistribute it and/or
12  *              modify it under the terms of the GNU General Public License
13  *              as published by the Free Software Foundation; either version
14  *              2 of the License, or (at your option) any later version.
15  */
16 #include "udp_impl.h"
17
18 DEFINE_SNMP_STAT(struct udp_mib, udplite_stats_in6) __read_mostly;
19
20 static int udplitev6_rcv(struct sk_buff *skb)
21 {
22         return __udp6_lib_rcv(skb, udplite_hash, IPPROTO_UDPLITE);
23 }
24
25 static void udplitev6_err(struct sk_buff *skb,
26                           struct inet6_skb_parm *opt,
27                           int type, int code, int offset, __be32 info)
28 {
29         __udp6_lib_err(skb, opt, type, code, offset, info, udplite_hash);
30 }
31
32 static struct inet6_protocol udplitev6_protocol = {
33         .handler        =       udplitev6_rcv,
34         .err_handler    =       udplitev6_err,
35         .flags          =       INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
36 };
37
38 struct proto udplitev6_prot = {
39         .name              = "UDPLITEv6",
40         .owner             = THIS_MODULE,
41         .close             = udp_lib_close,
42         .connect           = ip6_datagram_connect,
43         .disconnect        = udp_disconnect,
44         .ioctl             = udp_ioctl,
45         .init              = udplite_sk_init,
46         .destroy           = udpv6_destroy_sock,
47         .setsockopt        = udpv6_setsockopt,
48         .getsockopt        = udpv6_getsockopt,
49         .sendmsg           = udpv6_sendmsg,
50         .recvmsg           = udpv6_recvmsg,
51         .backlog_rcv       = udpv6_queue_rcv_skb,
52         .hash              = udp_lib_hash,
53         .unhash            = udp_lib_unhash,
54         .get_port          = udp_v6_get_port,
55         .obj_size          = sizeof(struct udp6_sock),
56         .h.udp_hash        = udplite_hash,
57 #ifdef CONFIG_COMPAT
58         .compat_setsockopt = compat_udpv6_setsockopt,
59         .compat_getsockopt = compat_udpv6_getsockopt,
60 #endif
61 };
62
63 static struct inet_protosw udplite6_protosw = {
64         .type           = SOCK_DGRAM,
65         .protocol       = IPPROTO_UDPLITE,
66         .prot           = &udplitev6_prot,
67         .ops            = &inet6_dgram_ops,
68         .capability     = -1,
69         .no_check       = 0,
70         .flags          = INET_PROTOSW_PERMANENT,
71 };
72
73 int __init udplitev6_init(void)
74 {
75         int ret;
76
77         ret = inet6_add_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
78         if (ret)
79                 goto out;
80
81         ret = inet6_register_protosw(&udplite6_protosw);
82         if (ret)
83                 goto out_udplitev6_protocol;
84 out:
85         return ret;
86
87 out_udplitev6_protocol:
88         inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
89         goto out;
90 }
91
92 void udplitev6_exit(void)
93 {
94         inet6_unregister_protosw(&udplite6_protosw);
95         inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
96 }
97
98 #ifdef CONFIG_PROC_FS
99 static struct udp_seq_afinfo udplite6_seq_afinfo = {
100         .name           = "udplite6",
101         .family         = AF_INET6,
102         .hashtable      = udplite_hash,
103         .seq_fops       = {
104                 .owner  =       THIS_MODULE,
105         },
106         .seq_ops        = {
107                 .show           = udp6_seq_show,
108         },
109 };
110
111 static int udplite6_proc_init_net(struct net *net)
112 {
113         return udp_proc_register(net, &udplite6_seq_afinfo);
114 }
115
116 static void udplite6_proc_exit_net(struct net *net)
117 {
118         udp_proc_unregister(net, &udplite6_seq_afinfo);
119 }
120
121 static struct pernet_operations udplite6_net_ops = {
122         .init = udplite6_proc_init_net,
123         .exit = udplite6_proc_exit_net,
124 };
125
126 int __init udplite6_proc_init(void)
127 {
128         return register_pernet_subsys(&udplite6_net_ops);
129 }
130
131 void udplite6_proc_exit(void)
132 {
133         unregister_pernet_subsys(&udplite6_net_ops);
134 }
135 #endif