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 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 DEFINE_PROTO_INUSE(udplitev6) 44 45 struct proto udplitev6_prot = { 46 .name = "UDPLITEv6", 47 .owner = THIS_MODULE, 48 .close = udp_lib_close, 49 .connect = ip6_datagram_connect, 50 .disconnect = udp_disconnect, 51 .ioctl = udp_ioctl, 52 .init = udplite_sk_init, 53 .destroy = udpv6_destroy_sock, 54 .setsockopt = udpv6_setsockopt, 55 .getsockopt = udpv6_getsockopt, 56 .sendmsg = udpv6_sendmsg, 57 .recvmsg = udpv6_recvmsg, 58 .backlog_rcv = udpv6_queue_rcv_skb, 59 .hash = udp_lib_hash, 60 .unhash = udp_lib_unhash, 61 .get_port = udplite_v6_get_port, 62 .obj_size = sizeof(struct udp6_sock), 63 #ifdef CONFIG_COMPAT 64 .compat_setsockopt = compat_udpv6_setsockopt, 65 .compat_getsockopt = compat_udpv6_getsockopt, 66 #endif 67 REF_PROTO_INUSE(udplitev6) 68 }; 69 70 static struct inet_protosw udplite6_protosw = { 71 .type = SOCK_DGRAM, 72 .protocol = IPPROTO_UDPLITE, 73 .prot = &udplitev6_prot, 74 .ops = &inet6_dgram_ops, 75 .capability = -1, 76 .no_check = 0, 77 .flags = INET_PROTOSW_PERMANENT, 78 }; 79 80 int __init udplitev6_init(void) 81 { 82 int ret; 83 84 ret = inet6_add_protocol(&udplitev6_protocol, IPPROTO_UDPLITE); 85 if (ret) 86 goto out; 87 88 ret = inet6_register_protosw(&udplite6_protosw); 89 if (ret) 90 goto out_udplitev6_protocol; 91 out: 92 return ret; 93 94 out_udplitev6_protocol: 95 inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE); 96 goto out; 97 } 98 99 void udplitev6_exit(void) 100 { 101 inet6_unregister_protosw(&udplite6_protosw); 102 inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE); 103 } 104 105 #ifdef CONFIG_PROC_FS 106 static struct file_operations udplite6_seq_fops; 107 static struct udp_seq_afinfo udplite6_seq_afinfo = { 108 .owner = THIS_MODULE, 109 .name = "udplite6", 110 .family = AF_INET6, 111 .hashtable = udplite_hash, 112 .seq_show = udp6_seq_show, 113 .seq_fops = &udplite6_seq_fops, 114 }; 115 116 int __init udplite6_proc_init(void) 117 { 118 return udp_proc_register(&udplite6_seq_afinfo); 119 } 120 121 void udplite6_proc_exit(void) 122 { 123 udp_proc_unregister(&udplite6_seq_afinfo); 124 } 125 #endif 126