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>
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.
16 DEFINE_SNMP_STAT(struct udp_mib
, udplite_statistics
) __read_mostly
;
18 struct hlist_head udplite_hash
[UDP_HTABLE_SIZE
];
20 static int udplite_rcv(struct sk_buff
*skb
)
22 return __udp4_lib_rcv(skb
, udplite_hash
, IPPROTO_UDPLITE
);
25 static void udplite_err(struct sk_buff
*skb
, u32 info
)
27 __udp4_lib_err(skb
, info
, udplite_hash
);
30 static struct net_protocol udplite_protocol
= {
31 .handler
= udplite_rcv
,
32 .err_handler
= udplite_err
,
36 DEFINE_PROTO_INUSE(udplite
)
38 struct proto udplite_prot
= {
41 .close
= udp_lib_close
,
42 .connect
= ip4_datagram_connect
,
43 .disconnect
= udp_disconnect
,
45 .init
= udplite_sk_init
,
46 .destroy
= udp_destroy_sock
,
47 .setsockopt
= udp_setsockopt
,
48 .getsockopt
= udp_getsockopt
,
49 .sendmsg
= udp_sendmsg
,
50 .recvmsg
= udp_recvmsg
,
51 .sendpage
= udp_sendpage
,
52 .backlog_rcv
= udp_queue_rcv_skb
,
54 .unhash
= udp_lib_unhash
,
55 .get_port
= udp_v4_get_port
,
56 .obj_size
= sizeof(struct udp_sock
),
57 .h
.udp_hash
= udplite_hash
,
59 .compat_setsockopt
= compat_udp_setsockopt
,
60 .compat_getsockopt
= compat_udp_getsockopt
,
62 REF_PROTO_INUSE(udplite
)
65 static struct inet_protosw udplite4_protosw
= {
67 .protocol
= IPPROTO_UDPLITE
,
68 .prot
= &udplite_prot
,
69 .ops
= &inet_dgram_ops
,
71 .no_check
= 0, /* must checksum (RFC 3828) */
72 .flags
= INET_PROTOSW_PERMANENT
,
76 static struct file_operations udplite4_seq_fops
;
77 static struct udp_seq_afinfo udplite4_seq_afinfo
= {
81 .hashtable
= udplite_hash
,
82 .seq_show
= udp4_seq_show
,
83 .seq_fops
= &udplite4_seq_fops
,
87 void __init
udplite4_register(void)
89 if (proto_register(&udplite_prot
, 1))
90 goto out_register_err
;
92 if (inet_add_protocol(&udplite_protocol
, IPPROTO_UDPLITE
) < 0)
93 goto out_unregister_proto
;
95 inet_register_protosw(&udplite4_protosw
);
98 if (udp_proc_register(&init_net
, &udplite4_seq_afinfo
))
99 printk(KERN_ERR
"%s: Cannot register /proc!\n", __func__
);
103 out_unregister_proto
:
104 proto_unregister(&udplite_prot
);
106 printk(KERN_CRIT
"%s: Cannot add UDP-Lite protocol.\n", __func__
);
109 EXPORT_SYMBOL(udplite_hash
);
110 EXPORT_SYMBOL(udplite_prot
);