Merge branch 'upstream-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarz...
[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 DEFINE_SNMP_STAT(struct udp_mib, udplite_stats_in6) __read_mostly;
17
18 static int udplitev6_rcv(struct sk_buff *skb)
19 {
20         return __udp6_lib_rcv(skb, udplite_hash, IPPROTO_UDPLITE);
21 }
22
23 static void udplitev6_err(struct sk_buff *skb,
24                           struct inet6_skb_parm *opt,
25                           int type, int code, int offset, __be32 info)
26 {
27         __udp6_lib_err(skb, opt, type, code, offset, info, udplite_hash);
28 }
29
30 static struct inet6_protocol udplitev6_protocol = {
31         .handler        =       udplitev6_rcv,
32         .err_handler    =       udplitev6_err,
33         .flags          =       INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
34 };
35
36 struct proto udplitev6_prot = {
37         .name              = "UDPLITEv6",
38         .owner             = THIS_MODULE,
39         .close             = udp_lib_close,
40         .connect           = ip6_datagram_connect,
41         .disconnect        = udp_disconnect,
42         .ioctl             = udp_ioctl,
43         .init              = udplite_sk_init,
44         .destroy           = udpv6_destroy_sock,
45         .setsockopt        = udpv6_setsockopt,
46         .getsockopt        = udpv6_getsockopt,
47         .sendmsg           = udpv6_sendmsg,
48         .recvmsg           = udpv6_recvmsg,
49         .backlog_rcv       = udpv6_queue_rcv_skb,
50         .hash              = udp_lib_hash,
51         .unhash            = udp_lib_unhash,
52         .get_port          = udp_v6_get_port,
53         .obj_size          = sizeof(struct udp6_sock),
54         .h.udp_hash        = udplite_hash,
55 #ifdef CONFIG_COMPAT
56         .compat_setsockopt = compat_udpv6_setsockopt,
57         .compat_getsockopt = compat_udpv6_getsockopt,
58 #endif
59 };
60
61 static struct inet_protosw udplite6_protosw = {
62         .type           = SOCK_DGRAM,
63         .protocol       = IPPROTO_UDPLITE,
64         .prot           = &udplitev6_prot,
65         .ops            = &inet6_dgram_ops,
66         .capability     = -1,
67         .no_check       = 0,
68         .flags          = INET_PROTOSW_PERMANENT,
69 };
70
71 int __init udplitev6_init(void)
72 {
73         int ret;
74
75         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;
82 out:
83         return ret;
84
85 out_udplitev6_protocol:
86         inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
87         goto out;
88 }
89
90 void udplitev6_exit(void)
91 {
92         inet6_unregister_protosw(&udplite6_protosw);
93         inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
94 }
95
96 #ifdef CONFIG_PROC_FS
97 static struct udp_seq_afinfo udplite6_seq_afinfo = {
98         .name           = "udplite6",
99         .family         = AF_INET6,
100         .hashtable      = udplite_hash,
101         .seq_fops       = {
102                 .owner  =       THIS_MODULE,
103         },
104         .seq_ops        = {
105                 .show           = udp6_seq_show,
106         },
107 };
108
109 static int udplite6_proc_init_net(struct net *net)
110 {
111         return udp_proc_register(net, &udplite6_seq_afinfo);
112 }
113
114 static void udplite6_proc_exit_net(struct net *net)
115 {
116         udp_proc_unregister(net, &udplite6_seq_afinfo);
117 }
118
119 static struct pernet_operations udplite6_net_ops = {
120         .init = udplite6_proc_init_net,
121         .exit = udplite6_proc_exit_net,
122 };
123
124 int __init udplite6_proc_init(void)
125 {
126         return register_pernet_subsys(&udplite6_net_ops);
127 }
128
129 void udplite6_proc_exit(void)
130 {
131         unregister_pernet_subsys(&udplite6_net_ops);
132 }
133 #endif