[NETFILTER]: remove remaining ASSERT_{READ,WRITE}_LOCK
[linux-2.6/linux-mips.git] / net / ipv4 / udplite.c
blob561de6d8c7343361d09cf328aa407db236360a7f
1 /*
2 * UDPLITE An implementation of the UDP-Lite protocol (RFC 3828).
4 * Version: $Id: udplite.c,v 1.25 2006/10/19 07:22:36 gerrit Exp $
6 * Authors: Gerrit Renker <gerrit@erg.abdn.ac.uk>
8 * Changes:
9 * Fixes:
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
15 #include "udp_impl.h"
16 DEFINE_SNMP_STAT(struct udp_mib, udplite_statistics) __read_mostly;
18 struct hlist_head udplite_hash[UDP_HTABLE_SIZE];
19 static int udplite_port_rover;
21 __inline__ int udplite_get_port(struct sock *sk, unsigned short p,
22 int (*c)(const struct sock *, const struct sock *))
24 return __udp_lib_get_port(sk, p, udplite_hash, &udplite_port_rover, c);
27 static __inline__ int udplite_v4_get_port(struct sock *sk, unsigned short snum)
29 return udplite_get_port(sk, snum, ipv4_rcv_saddr_equal);
32 __inline__ int udplite_rcv(struct sk_buff *skb)
34 return __udp4_lib_rcv(skb, udplite_hash, 1);
37 __inline__ void udplite_err(struct sk_buff *skb, u32 info)
39 return __udp4_lib_err(skb, info, udplite_hash);
42 static struct net_protocol udplite_protocol = {
43 .handler = udplite_rcv,
44 .err_handler = udplite_err,
45 .no_policy = 1,
48 struct proto udplite_prot = {
49 .name = "UDP-Lite",
50 .owner = THIS_MODULE,
51 .close = udp_lib_close,
52 .connect = ip4_datagram_connect,
53 .disconnect = udp_disconnect,
54 .ioctl = udp_ioctl,
55 .init = udplite_sk_init,
56 .destroy = udp_destroy_sock,
57 .setsockopt = udp_setsockopt,
58 .getsockopt = udp_getsockopt,
59 .sendmsg = udp_sendmsg,
60 .recvmsg = udp_recvmsg,
61 .sendpage = udp_sendpage,
62 .backlog_rcv = udp_queue_rcv_skb,
63 .hash = udp_lib_hash,
64 .unhash = udp_lib_unhash,
65 .get_port = udplite_v4_get_port,
66 .obj_size = sizeof(struct udp_sock),
67 #ifdef CONFIG_COMPAT
68 .compat_setsockopt = compat_udp_setsockopt,
69 .compat_getsockopt = compat_udp_getsockopt,
70 #endif
73 static struct inet_protosw udplite4_protosw = {
74 .type = SOCK_DGRAM,
75 .protocol = IPPROTO_UDPLITE,
76 .prot = &udplite_prot,
77 .ops = &inet_dgram_ops,
78 .capability = -1,
79 .no_check = 0, /* must checksum (RFC 3828) */
80 .flags = INET_PROTOSW_PERMANENT,
83 #ifdef CONFIG_PROC_FS
84 static struct file_operations udplite4_seq_fops;
85 static struct udp_seq_afinfo udplite4_seq_afinfo = {
86 .owner = THIS_MODULE,
87 .name = "udplite",
88 .family = AF_INET,
89 .hashtable = udplite_hash,
90 .seq_show = udp4_seq_show,
91 .seq_fops = &udplite4_seq_fops,
93 #endif
95 void __init udplite4_register(void)
97 if (proto_register(&udplite_prot, 1))
98 goto out_register_err;
100 if (inet_add_protocol(&udplite_protocol, IPPROTO_UDPLITE) < 0)
101 goto out_unregister_proto;
103 inet_register_protosw(&udplite4_protosw);
105 #ifdef CONFIG_PROC_FS
106 if (udp_proc_register(&udplite4_seq_afinfo)) /* udplite4_proc_init() */
107 printk(KERN_ERR "%s: Cannot register /proc!\n", __FUNCTION__);
108 #endif
109 return;
111 out_unregister_proto:
112 proto_unregister(&udplite_prot);
113 out_register_err:
114 printk(KERN_CRIT "%s: Cannot add UDP-Lite protocol.\n", __FUNCTION__);
117 EXPORT_SYMBOL(udplite_hash);
118 EXPORT_SYMBOL(udplite_prot);
119 EXPORT_SYMBOL(udplite_get_port);