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 static int udplitev6_rcv(struct sk_buff *skb) 17 { 18 return __udp6_lib_rcv(skb, udplite_hash, IPPROTO_UDPLITE); 19 } 20 21 static void udplitev6_err(struct sk_buff *skb, 22 struct inet6_skb_parm *opt, 23 int type, int code, int offset, __be32 info) 24 { 25 __udp6_lib_err(skb, opt, type, code, offset, info, udplite_hash); 26 } 27 28 static struct inet6_protocol udplitev6_protocol = { 29 .handler = udplitev6_rcv, 30 .err_handler = udplitev6_err, 31 .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL, 32 }; 33 34 struct 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 .h.udp_hash = udplite_hash, 53 #ifdef CONFIG_COMPAT 54 .compat_setsockopt = compat_udpv6_setsockopt, 55 .compat_getsockopt = compat_udpv6_getsockopt, 56 #endif 57 }; 58 59 static struct inet_protosw udplite6_protosw = { 60 .type = SOCK_DGRAM, 61 .protocol = IPPROTO_UDPLITE, 62 .prot = &udplitev6_prot, 63 .ops = &inet6_dgram_ops, 64 .capability = -1, 65 .no_check = 0, 66 .flags = INET_PROTOSW_PERMANENT, 67 }; 68 69 int __init udplitev6_init(void) 70 { 71 int ret; 72 73 ret = inet6_add_protocol(&udplitev6_protocol, IPPROTO_UDPLITE); 74 if (ret) 75 goto out; 76 77 ret = inet6_register_protosw(&udplite6_protosw); 78 if (ret) 79 goto out_udplitev6_protocol; 80 out: 81 return ret; 82 83 out_udplitev6_protocol: 84 inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE); 85 goto out; 86 } 87 88 void udplitev6_exit(void) 89 { 90 inet6_unregister_protosw(&udplite6_protosw); 91 inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE); 92 } 93 94 #ifdef CONFIG_PROC_FS 95 static struct udp_seq_afinfo udplite6_seq_afinfo = { 96 .name = "udplite6", 97 .family = AF_INET6, 98 .hashtable = udplite_hash, 99 .seq_fops = { 100 .owner = THIS_MODULE, 101 }, 102 .seq_ops = { 103 .show = udp6_seq_show, 104 }, 105 }; 106 107 static int udplite6_proc_init_net(struct net *net) 108 { 109 return udp_proc_register(net, &udplite6_seq_afinfo); 110 } 111 112 static void udplite6_proc_exit_net(struct net *net) 113 { 114 udp_proc_unregister(net, &udplite6_seq_afinfo); 115 } 116 117 static struct pernet_operations udplite6_net_ops = { 118 .init = udplite6_proc_init_net, 119 .exit = udplite6_proc_exit_net, 120 }; 121 122 int __init udplite6_proc_init(void) 123 { 124 return register_pernet_subsys(&udplite6_net_ops); 125 } 126 127 void udplite6_proc_exit(void) 128 { 129 unregister_pernet_subsys(&udplite6_net_ops); 130 } 131 #endif 132