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         return __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 static int udplite_v6_get_port(struct sock *sk, unsigned short snum)
  39 {
  40         return udplite_get_port(sk, snum, ipv6_rcv_saddr_equal);
  41 }
  42
  43 struct proto udplitev6_prot = {
  44         .name              = "UDPLITEv6",
  45         .owner             = THIS_MODULE,
  46         .close             = udp_lib_close,
  47         .connect           = ip6_datagram_connect,
  48         .disconnect        = udp_disconnect,
  49         .ioctl             = udp_ioctl,
  50         .init              = udplite_sk_init,
  51         .destroy           = udpv6_destroy_sock,
  52         .setsockopt        = udpv6_setsockopt,
  53         .getsockopt        = udpv6_getsockopt,
  54         .sendmsg           = udpv6_sendmsg,
  55         .recvmsg           = udpv6_recvmsg,
  56         .backlog_rcv       = udpv6_queue_rcv_skb,
  57         .hash              = udp_lib_hash,
  58         .unhash            = udp_lib_unhash,
  59         .get_port          = udplite_v6_get_port,
  60         .obj_size          = sizeof(struct udp6_sock),
  61 #ifdef CONFIG_COMPAT
  62         .compat_setsockopt = compat_udpv6_setsockopt,
  63         .compat_getsockopt = compat_udpv6_getsockopt,
  64 #endif
  65 };
  66
  67 static struct inet_protosw udplite6_protosw = {
  68         .type           = SOCK_DGRAM,
  69         .protocol       = IPPROTO_UDPLITE,
  70         .prot           = &udplitev6_prot,
  71         .ops            = &inet6_dgram_ops,
  72         .capability     = -1,
  73         .no_check       = 0,
  74         .flags          = INET_PROTOSW_PERMANENT,
  75 };
  76
  77 void __init udplitev6_init(void)
  78 {
  79         if (inet6_add_protocol(&udplitev6_protocol, IPPROTO_UDPLITE) < 0)
  80                 printk(KERN_ERR "%s: Could not register.\n", __FUNCTION__);
  81
  82         inet6_register_protosw(&udplite6_protosw);
  83 }
  84
  85 #ifdef CONFIG_PROC_FS
  86 static struct file_operations udplite6_seq_fops;
  87 static struct udp_seq_afinfo udplite6_seq_afinfo = {
  88         .owner          = THIS_MODULE,
  89         .name           = "udplite6",
  90         .family         = AF_INET6,
  91         .hashtable      = udplite_hash,
  92         .seq_show       = udp6_seq_show,
  93         .seq_fops       = &udplite6_seq_fops,
  94 };
  95
  96 int __init udplite6_proc_init(void)
  97 {
  98         return udp_proc_register(&udplite6_seq_afinfo);
  99 }
 100
 101 void udplite6_proc_exit(void)
 102 {
 103         udp_proc_unregister(&udplite6_seq_afinfo);
 104 }
 105 #endif