LXR linux/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
  16static int udplitev6_rcv(struct sk_buff *skb)
  17{
  18        return __udp6_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE);
  19}
  20
  21static void udplitev6_err(struct sk_buff *skb,
  22                          struct inet6_skb_parm *opt,
  23                          u8 type, u8 code, int offset, __be32 info)
  24{
  25        __udp6_lib_err(skb, opt, type, code, offset, info, &udplite_table);
  26}
  27
  28static const struct inet6_protocol udplitev6_protocol = {
  29        .handler        =       udplitev6_rcv,
  30        .err_handler    =       udplitev6_err,
  31        .flags          =       INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
  32};
  33
  34struct 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
  60static 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
  70int __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;
  81out:
  82        return ret;
  83
  84out_udplitev6_protocol:
  85        inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
  86        goto out;
  87}
  88
  89void 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
  96static 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
 108static int udplite6_proc_init_net(struct net *net)
 109{
 110        return udp_proc_register(net, &udplite6_seq_afinfo);
 111}
 112
 113static void udplite6_proc_exit_net(struct net *net)
 114{
 115        udp_proc_unregister(net, &udplite6_seq_afinfo);
 116}
 117
 118static struct pernet_operations udplite6_net_ops = {
 119        .init = udplite6_proc_init_net,
 120        .exit = udplite6_proc_exit_net,
 121};
 122
 123int __init udplite6_proc_init(void)
 124{
 125        return register_pernet_subsys(&udplite6_net_ops);
 126}
 127
 128void udplite6_proc_exit(void)
 129{
 130        unregister_pernet_subsys(&udplite6_net_ops);
 131}
 132#endif
 133