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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
ba4e58ec GR |
2 | /* |
3 | * UDPLITEv6 An implementation of the UDP-Lite protocol over IPv6. | |
4 | * See also net/ipv4/udplite.c | |
5 | * | |
ba4e58ec GR |
6 | * Authors: Gerrit Renker <gerrit@erg.abdn.ac.uk> |
7 | * | |
8 | * Changes: | |
9 | * Fixes: | |
ba4e58ec | 10 | */ |
bc3b2d7f | 11 | #include <linux/export.h> |
a3d2599b | 12 | #include <linux/proc_fs.h> |
ba4e58ec GR |
13 | #include "udp_impl.h" |
14 | ||
e5bbef20 | 15 | static int udplitev6_rcv(struct sk_buff *skb) |
ba4e58ec | 16 | { |
645ca708 | 17 | return __udp6_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE); |
ba4e58ec GR |
18 | } |
19 | ||
32bbd879 | 20 | static int udplitev6_err(struct sk_buff *skb, |
f5b99bcd | 21 | struct inet6_skb_parm *opt, |
d5fdd6ba | 22 | u8 type, u8 code, int offset, __be32 info) |
ba4e58ec | 23 | { |
32bbd879 SB |
24 | return __udp6_lib_err(skb, opt, type, code, offset, info, |
25 | &udplite_table); | |
ba4e58ec GR |
26 | } |
27 | ||
41135cc8 | 28 | static const struct inet6_protocol udplitev6_protocol = { |
ba4e58ec GR |
29 | .handler = udplitev6_rcv, |
30 | .err_handler = udplitev6_err, | |
31 | .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL, | |
32 | }; | |
33 | ||
ba4e58ec GR |
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, | |
ba4e58ec GR |
47 | .hash = udp_lib_hash, |
48 | .unhash = udp_lib_unhash, | |
f7c46156 | 49 | .rehash = udp_v6_rehash, |
6ba5a3c5 | 50 | .get_port = udp_v6_get_port, |
c915fe13 PA |
51 | .memory_allocated = &udp_memory_allocated, |
52 | .sysctl_mem = sysctl_udp_mem, | |
ba4e58ec | 53 | .obj_size = sizeof(struct udp6_sock), |
645ca708 | 54 | .h.udp_table = &udplite_table, |
ba4e58ec GR |
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, | |
ba4e58ec GR |
66 | .flags = INET_PROTOSW_PERMANENT, |
67 | }; | |
68 | ||
7f4e4868 | 69 | int __init udplitev6_init(void) |
ba4e58ec | 70 | { |
7f4e4868 | 71 | int ret; |
ba4e58ec | 72 | |
7f4e4868 DL |
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 | ||
09f7709f | 88 | void udplitev6_exit(void) |
7f4e4868 DL |
89 | { |
90 | inet6_unregister_protosw(&udplite6_protosw); | |
91 | inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE); | |
ba4e58ec GR |
92 | } |
93 | ||
94 | #ifdef CONFIG_PROC_FS | |
ba4e58ec | 95 | static struct udp_seq_afinfo udplite6_seq_afinfo = { |
ba4e58ec | 96 | .family = AF_INET6, |
645ca708 | 97 | .udp_table = &udplite_table, |
ba4e58ec GR |
98 | }; |
99 | ||
2c8c1e72 | 100 | static int __net_init udplite6_proc_init_net(struct net *net) |
84c375af | 101 | { |
c3506372 CH |
102 | if (!proc_create_net_data("udplite6", 0444, net->proc_net, |
103 | &udp6_seq_ops, sizeof(struct udp_iter_state), | |
104 | &udplite6_seq_afinfo)) | |
a3d2599b CH |
105 | return -ENOMEM; |
106 | return 0; | |
84c375af PE |
107 | } |
108 | ||
2c8c1e72 | 109 | static void __net_exit udplite6_proc_exit_net(struct net *net) |
84c375af | 110 | { |
a3d2599b | 111 | remove_proc_entry("udplite6", net->proc_net); |
84c375af PE |
112 | } |
113 | ||
114 | static struct pernet_operations udplite6_net_ops = { | |
115 | .init = udplite6_proc_init_net, | |
116 | .exit = udplite6_proc_exit_net, | |
117 | }; | |
118 | ||
ba4e58ec GR |
119 | int __init udplite6_proc_init(void) |
120 | { | |
84c375af | 121 | return register_pernet_subsys(&udplite6_net_ops); |
ba4e58ec GR |
122 | } |
123 | ||
124 | void udplite6_proc_exit(void) | |
125 | { | |
84c375af | 126 | unregister_pernet_subsys(&udplite6_net_ops); |
ba4e58ec GR |
127 | } |
128 | #endif |