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 134