1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * UDPLITEv6 An implementation of the UDP-Lite protocol over IPv6.
4*4882a593Smuzhiyun * See also net/ipv4/udplite.c
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Authors: Gerrit Renker <gerrit@erg.abdn.ac.uk>
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * Changes:
9*4882a593Smuzhiyun * Fixes:
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun #include <linux/export.h>
12*4882a593Smuzhiyun #include <linux/proc_fs.h>
13*4882a593Smuzhiyun #include "udp_impl.h"
14*4882a593Smuzhiyun
udplitev6_rcv(struct sk_buff * skb)15*4882a593Smuzhiyun static int udplitev6_rcv(struct sk_buff *skb)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun return __udp6_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE);
18*4882a593Smuzhiyun }
19*4882a593Smuzhiyun
udplitev6_err(struct sk_buff * skb,struct inet6_skb_parm * opt,u8 type,u8 code,int offset,__be32 info)20*4882a593Smuzhiyun static int udplitev6_err(struct sk_buff *skb,
21*4882a593Smuzhiyun struct inet6_skb_parm *opt,
22*4882a593Smuzhiyun u8 type, u8 code, int offset, __be32 info)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun return __udp6_lib_err(skb, opt, type, code, offset, info,
25*4882a593Smuzhiyun &udplite_table);
26*4882a593Smuzhiyun }
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun static const struct inet6_protocol udplitev6_protocol = {
29*4882a593Smuzhiyun .handler = udplitev6_rcv,
30*4882a593Smuzhiyun .err_handler = udplitev6_err,
31*4882a593Smuzhiyun .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
32*4882a593Smuzhiyun };
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun struct proto udplitev6_prot = {
35*4882a593Smuzhiyun .name = "UDPLITEv6",
36*4882a593Smuzhiyun .owner = THIS_MODULE,
37*4882a593Smuzhiyun .close = udp_lib_close,
38*4882a593Smuzhiyun .connect = ip6_datagram_connect,
39*4882a593Smuzhiyun .disconnect = udp_disconnect,
40*4882a593Smuzhiyun .ioctl = udp_ioctl,
41*4882a593Smuzhiyun .init = udplite_sk_init,
42*4882a593Smuzhiyun .destroy = udpv6_destroy_sock,
43*4882a593Smuzhiyun .setsockopt = udpv6_setsockopt,
44*4882a593Smuzhiyun .getsockopt = udpv6_getsockopt,
45*4882a593Smuzhiyun .sendmsg = udpv6_sendmsg,
46*4882a593Smuzhiyun .recvmsg = udpv6_recvmsg,
47*4882a593Smuzhiyun .hash = udp_lib_hash,
48*4882a593Smuzhiyun .unhash = udp_lib_unhash,
49*4882a593Smuzhiyun .rehash = udp_v6_rehash,
50*4882a593Smuzhiyun .get_port = udp_v6_get_port,
51*4882a593Smuzhiyun .memory_allocated = &udp_memory_allocated,
52*4882a593Smuzhiyun .sysctl_mem = sysctl_udp_mem,
53*4882a593Smuzhiyun .obj_size = sizeof(struct udp6_sock),
54*4882a593Smuzhiyun .h.udp_table = &udplite_table,
55*4882a593Smuzhiyun };
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun static struct inet_protosw udplite6_protosw = {
58*4882a593Smuzhiyun .type = SOCK_DGRAM,
59*4882a593Smuzhiyun .protocol = IPPROTO_UDPLITE,
60*4882a593Smuzhiyun .prot = &udplitev6_prot,
61*4882a593Smuzhiyun .ops = &inet6_dgram_ops,
62*4882a593Smuzhiyun .flags = INET_PROTOSW_PERMANENT,
63*4882a593Smuzhiyun };
64*4882a593Smuzhiyun
udplitev6_init(void)65*4882a593Smuzhiyun int __init udplitev6_init(void)
66*4882a593Smuzhiyun {
67*4882a593Smuzhiyun int ret;
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun ret = inet6_add_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
70*4882a593Smuzhiyun if (ret)
71*4882a593Smuzhiyun goto out;
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun ret = inet6_register_protosw(&udplite6_protosw);
74*4882a593Smuzhiyun if (ret)
75*4882a593Smuzhiyun goto out_udplitev6_protocol;
76*4882a593Smuzhiyun out:
77*4882a593Smuzhiyun return ret;
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun out_udplitev6_protocol:
80*4882a593Smuzhiyun inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
81*4882a593Smuzhiyun goto out;
82*4882a593Smuzhiyun }
83*4882a593Smuzhiyun
udplitev6_exit(void)84*4882a593Smuzhiyun void udplitev6_exit(void)
85*4882a593Smuzhiyun {
86*4882a593Smuzhiyun inet6_unregister_protosw(&udplite6_protosw);
87*4882a593Smuzhiyun inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
88*4882a593Smuzhiyun }
89*4882a593Smuzhiyun
90*4882a593Smuzhiyun #ifdef CONFIG_PROC_FS
91*4882a593Smuzhiyun static struct udp_seq_afinfo udplite6_seq_afinfo = {
92*4882a593Smuzhiyun .family = AF_INET6,
93*4882a593Smuzhiyun .udp_table = &udplite_table,
94*4882a593Smuzhiyun };
95*4882a593Smuzhiyun
udplite6_proc_init_net(struct net * net)96*4882a593Smuzhiyun static int __net_init udplite6_proc_init_net(struct net *net)
97*4882a593Smuzhiyun {
98*4882a593Smuzhiyun if (!proc_create_net_data("udplite6", 0444, net->proc_net,
99*4882a593Smuzhiyun &udp6_seq_ops, sizeof(struct udp_iter_state),
100*4882a593Smuzhiyun &udplite6_seq_afinfo))
101*4882a593Smuzhiyun return -ENOMEM;
102*4882a593Smuzhiyun return 0;
103*4882a593Smuzhiyun }
104*4882a593Smuzhiyun
udplite6_proc_exit_net(struct net * net)105*4882a593Smuzhiyun static void __net_exit udplite6_proc_exit_net(struct net *net)
106*4882a593Smuzhiyun {
107*4882a593Smuzhiyun remove_proc_entry("udplite6", net->proc_net);
108*4882a593Smuzhiyun }
109*4882a593Smuzhiyun
110*4882a593Smuzhiyun static struct pernet_operations udplite6_net_ops = {
111*4882a593Smuzhiyun .init = udplite6_proc_init_net,
112*4882a593Smuzhiyun .exit = udplite6_proc_exit_net,
113*4882a593Smuzhiyun };
114*4882a593Smuzhiyun
udplite6_proc_init(void)115*4882a593Smuzhiyun int __init udplite6_proc_init(void)
116*4882a593Smuzhiyun {
117*4882a593Smuzhiyun return register_pernet_subsys(&udplite6_net_ops);
118*4882a593Smuzhiyun }
119*4882a593Smuzhiyun
udplite6_proc_exit(void)120*4882a593Smuzhiyun void udplite6_proc_exit(void)
121*4882a593Smuzhiyun {
122*4882a593Smuzhiyun unregister_pernet_subsys(&udplite6_net_ops);
123*4882a593Smuzhiyun }
124*4882a593Smuzhiyun #endif
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