Commit | Line | Data |
---|---|---|
ba4e58ec GR |
1 | /* |
2 | * UDPLITE An implementation of the UDP-Lite protocol (RFC 3828). | |
3 | * | |
ba4e58ec GR |
4 | * Authors: Gerrit Renker <gerrit@erg.abdn.ac.uk> |
5 | * | |
6 | * Changes: | |
7 | * Fixes: | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * as published by the Free Software Foundation; either version | |
11 | * 2 of the License, or (at your option) any later version. | |
12 | */ | |
13 | #include "udp_impl.h" | |
ba4e58ec | 14 | |
645ca708 ED |
15 | struct udp_table udplite_table; |
16 | EXPORT_SYMBOL(udplite_table); | |
ba4e58ec | 17 | |
f5b99bcd | 18 | static int udplite_rcv(struct sk_buff *skb) |
ba4e58ec | 19 | { |
645ca708 | 20 | return __udp4_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE); |
ba4e58ec GR |
21 | } |
22 | ||
f5b99bcd | 23 | static void udplite_err(struct sk_buff *skb, u32 info) |
ba4e58ec | 24 | { |
645ca708 | 25 | __udp4_lib_err(skb, info, &udplite_table); |
ba4e58ec GR |
26 | } |
27 | ||
28 | static struct net_protocol udplite_protocol = { | |
29 | .handler = udplite_rcv, | |
30 | .err_handler = udplite_err, | |
31 | .no_policy = 1, | |
92f1fecb | 32 | .netns_ok = 1, |
ba4e58ec GR |
33 | }; |
34 | ||
35 | struct proto udplite_prot = { | |
36 | .name = "UDP-Lite", | |
37 | .owner = THIS_MODULE, | |
38 | .close = udp_lib_close, | |
39 | .connect = ip4_datagram_connect, | |
40 | .disconnect = udp_disconnect, | |
41 | .ioctl = udp_ioctl, | |
42 | .init = udplite_sk_init, | |
43 | .destroy = udp_destroy_sock, | |
44 | .setsockopt = udp_setsockopt, | |
45 | .getsockopt = udp_getsockopt, | |
46 | .sendmsg = udp_sendmsg, | |
47 | .recvmsg = udp_recvmsg, | |
48 | .sendpage = udp_sendpage, | |
49 | .backlog_rcv = udp_queue_rcv_skb, | |
50 | .hash = udp_lib_hash, | |
51 | .unhash = udp_lib_unhash, | |
6ba5a3c5 | 52 | .get_port = udp_v4_get_port, |
ba4e58ec | 53 | .obj_size = sizeof(struct udp_sock), |
271b72c7 | 54 | .slab_flags = SLAB_DESTROY_BY_RCU, |
645ca708 | 55 | .h.udp_table = &udplite_table, |
ba4e58ec GR |
56 | #ifdef CONFIG_COMPAT |
57 | .compat_setsockopt = compat_udp_setsockopt, | |
58 | .compat_getsockopt = compat_udp_getsockopt, | |
59 | #endif | |
60 | }; | |
61 | ||
62 | static struct inet_protosw udplite4_protosw = { | |
63 | .type = SOCK_DGRAM, | |
64 | .protocol = IPPROTO_UDPLITE, | |
65 | .prot = &udplite_prot, | |
66 | .ops = &inet_dgram_ops, | |
67 | .capability = -1, | |
68 | .no_check = 0, /* must checksum (RFC 3828) */ | |
69 | .flags = INET_PROTOSW_PERMANENT, | |
70 | }; | |
71 | ||
72 | #ifdef CONFIG_PROC_FS | |
ba4e58ec | 73 | static struct udp_seq_afinfo udplite4_seq_afinfo = { |
ba4e58ec GR |
74 | .name = "udplite", |
75 | .family = AF_INET, | |
645ca708 | 76 | .udp_table = &udplite_table, |
4ad96d39 DL |
77 | .seq_fops = { |
78 | .owner = THIS_MODULE, | |
79 | }, | |
dda61925 DL |
80 | .seq_ops = { |
81 | .show = udp4_seq_show, | |
82 | }, | |
ba4e58ec | 83 | }; |
ff2bac6a | 84 | |
84c375af PE |
85 | static int udplite4_proc_init_net(struct net *net) |
86 | { | |
87 | return udp_proc_register(net, &udplite4_seq_afinfo); | |
88 | } | |
89 | ||
90 | static void udplite4_proc_exit_net(struct net *net) | |
91 | { | |
92 | udp_proc_unregister(net, &udplite4_seq_afinfo); | |
93 | } | |
94 | ||
95 | static struct pernet_operations udplite4_net_ops = { | |
96 | .init = udplite4_proc_init_net, | |
97 | .exit = udplite4_proc_exit_net, | |
98 | }; | |
99 | ||
ff2bac6a PE |
100 | static __init int udplite4_proc_init(void) |
101 | { | |
84c375af | 102 | return register_pernet_subsys(&udplite4_net_ops); |
ff2bac6a PE |
103 | } |
104 | #else | |
105 | static inline int udplite4_proc_init(void) | |
106 | { | |
107 | return 0; | |
108 | } | |
ba4e58ec GR |
109 | #endif |
110 | ||
111 | void __init udplite4_register(void) | |
112 | { | |
645ca708 | 113 | udp_table_init(&udplite_table); |
ba4e58ec GR |
114 | if (proto_register(&udplite_prot, 1)) |
115 | goto out_register_err; | |
116 | ||
117 | if (inet_add_protocol(&udplite_protocol, IPPROTO_UDPLITE) < 0) | |
118 | goto out_unregister_proto; | |
119 | ||
120 | inet_register_protosw(&udplite4_protosw); | |
121 | ||
ff2bac6a | 122 | if (udplite4_proc_init()) |
0dc47877 | 123 | printk(KERN_ERR "%s: Cannot register /proc!\n", __func__); |
ba4e58ec GR |
124 | return; |
125 | ||
126 | out_unregister_proto: | |
127 | proto_unregister(&udplite_prot); | |
128 | out_register_err: | |
0dc47877 | 129 | printk(KERN_CRIT "%s: Cannot add UDP-Lite protocol.\n", __func__); |
ba4e58ec GR |
130 | } |
131 | ||
ba4e58ec | 132 | EXPORT_SYMBOL(udplite_prot); |