2 * UDPLITEv6 An implementation of the UDP-Lite protocol over IPv6.
3 * See also net/ipv4/udplite.c
5 * Authors: Gerrit Renker <gerrit@erg.abdn.ac.uk>
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.
14 #include <linux/export.h>
15 #include <linux/proc_fs.h>
18 static int udplitev6_sk_init(struct sock *sk)
21 udp_sk(sk)->pcflag = UDPLITE_BIT;
25 static int udplitev6_rcv(struct sk_buff *skb)
27 return __udp6_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE);
30 static void udplitev6_err(struct sk_buff *skb,
31 struct inet6_skb_parm *opt,
32 u8 type, u8 code, int offset, __be32 info)
34 __udp6_lib_err(skb, opt, type, code, offset, info, &udplite_table);
37 static const struct inet6_protocol udplitev6_protocol = {
38 .handler = udplitev6_rcv,
39 .err_handler = udplitev6_err,
40 .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
43 struct proto udplitev6_prot = {
46 .close = udp_lib_close,
47 .connect = ip6_datagram_connect,
48 .disconnect = udp_disconnect,
50 .init = udplitev6_sk_init,
51 .destroy = udpv6_destroy_sock,
52 .setsockopt = udpv6_setsockopt,
53 .getsockopt = udpv6_getsockopt,
54 .sendmsg = udpv6_sendmsg,
55 .recvmsg = udpv6_recvmsg,
57 .unhash = udp_lib_unhash,
58 .get_port = udp_v6_get_port,
59 .memory_allocated = &udp_memory_allocated,
60 .sysctl_mem = sysctl_udp_mem,
61 .sysctl_wmem_offset = offsetof(struct net, ipv4.sysctl_udp_wmem_min),
62 .sysctl_rmem_offset = offsetof(struct net, ipv4.sysctl_udp_rmem_min),
63 .obj_size = sizeof(struct udp6_sock),
64 .h.udp_table = &udplite_table,
66 .compat_setsockopt = compat_udpv6_setsockopt,
67 .compat_getsockopt = compat_udpv6_getsockopt,
71 static struct inet_protosw udplite6_protosw = {
73 .protocol = IPPROTO_UDPLITE,
74 .prot = &udplitev6_prot,
75 .ops = &inet6_dgram_ops,
76 .flags = INET_PROTOSW_PERMANENT,
79 int __init udplitev6_init(void)
83 ret = inet6_add_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
87 ret = inet6_register_protosw(&udplite6_protosw);
89 goto out_udplitev6_protocol;
93 out_udplitev6_protocol:
94 inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
98 void udplitev6_exit(void)
100 inet6_unregister_protosw(&udplite6_protosw);
101 inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
104 #ifdef CONFIG_PROC_FS
105 static struct udp_seq_afinfo udplite6_seq_afinfo = {
107 .udp_table = &udplite_table,
110 static int __net_init udplite6_proc_init_net(struct net *net)
112 if (!proc_create_net_data("udplite6", 0444, net->proc_net,
113 &udp6_seq_ops, sizeof(struct udp_iter_state),
114 &udplite6_seq_afinfo))
119 static void __net_exit udplite6_proc_exit_net(struct net *net)
121 remove_proc_entry("udplite6", net->proc_net);
124 static struct pernet_operations udplite6_net_ops = {
125 .init = udplite6_proc_init_net,
126 .exit = udplite6_proc_exit_net,
129 int __init udplite6_proc_init(void)
131 return register_pernet_subsys(&udplite6_net_ops);
134 void udplite6_proc_exit(void)
136 unregister_pernet_subsys(&udplite6_net_ops);