[deliverable/linux.git] / net / ipv4 / udplite.c

/*
 *  UDPLITE     An implementation of the UDP-Lite protocol (RFC 3828).
 *
 *  Authors:    Gerrit Renker       <gerrit@erg.abdn.ac.uk>
 *
 *  Changes:
 *  Fixes:
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 */
#include "udp_impl.h"

struct hlist_head 	udplite_hash[UDP_HTABLE_SIZE];

static int udplite_rcv(struct sk_buff *skb)
{
	return __udp4_lib_rcv(skb, udplite_hash, IPPROTO_UDPLITE);
}

static void udplite_err(struct sk_buff *skb, u32 info)
{
	__udp4_lib_err(skb, info, udplite_hash);
}

static	struct net_protocol udplite_protocol = {
	.handler	= udplite_rcv,
	.err_handler	= udplite_err,
	.no_policy	= 1,
	.netns_ok	= 1,
};

struct proto 	udplite_prot = {
	.name		   = "UDP-Lite",
	.owner		   = THIS_MODULE,
	.close		   = udp_lib_close,
	.connect	   = ip4_datagram_connect,
	.disconnect	   = udp_disconnect,
	.ioctl		   = udp_ioctl,
	.init		   = udplite_sk_init,
	.destroy	   = udp_destroy_sock,
	.setsockopt	   = udp_setsockopt,
	.getsockopt	   = udp_getsockopt,
	.sendmsg	   = udp_sendmsg,
	.recvmsg	   = udp_recvmsg,
	.sendpage	   = udp_sendpage,
	.backlog_rcv	   = udp_queue_rcv_skb,
	.hash		   = udp_lib_hash,
	.unhash		   = udp_lib_unhash,
	.get_port	   = udp_v4_get_port,
	.obj_size	   = sizeof(struct udp_sock),
	.h.udp_hash	   = udplite_hash,
#ifdef CONFIG_COMPAT
	.compat_setsockopt = compat_udp_setsockopt,
	.compat_getsockopt = compat_udp_getsockopt,
#endif
};

static struct inet_protosw udplite4_protosw = {
	.type		=  SOCK_DGRAM,
	.protocol	=  IPPROTO_UDPLITE,
	.prot		=  &udplite_prot,
	.ops		=  &inet_dgram_ops,
	.capability	= -1,
	.no_check	=  0,		/* must checksum (RFC 3828) */
	.flags		=  INET_PROTOSW_PERMANENT,
};

#ifdef CONFIG_PROC_FS
static struct udp_seq_afinfo udplite4_seq_afinfo = {
	.name		= "udplite",
	.family		= AF_INET,
	.hashtable	= udplite_hash,
	.seq_fops	= {
		.owner	=	THIS_MODULE,
	},
	.seq_ops	= {
		.show		= udp4_seq_show,
	},
};

static int udplite4_proc_init_net(struct net *net)
{
	return udp_proc_register(net, &udplite4_seq_afinfo);
}

static void udplite4_proc_exit_net(struct net *net)
{
	udp_proc_unregister(net, &udplite4_seq_afinfo);
}

static struct pernet_operations udplite4_net_ops = {
	.init = udplite4_proc_init_net,
	.exit = udplite4_proc_exit_net,
};

static __init int udplite4_proc_init(void)
{
	return register_pernet_subsys(&udplite4_net_ops);
}
#else
static inline int udplite4_proc_init(void)
{
	return 0;
}
#endif

void __init udplite4_register(void)
{
	if (proto_register(&udplite_prot, 1))
		goto out_register_err;

	if (inet_add_protocol(&udplite_protocol, IPPROTO_UDPLITE) < 0)
		goto out_unregister_proto;

	inet_register_protosw(&udplite4_protosw);

	if (udplite4_proc_init())
		printk(KERN_ERR "%s: Cannot register /proc!\n", __func__);
	return;

out_unregister_proto:
	proto_unregister(&udplite_prot);
out_register_err:
	printk(KERN_CRIT "%s: Cannot add UDP-Lite protocol.\n", __func__);
}

EXPORT_SYMBOL(udplite_hash);
EXPORT_SYMBOL(udplite_prot);
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 GR	14
ba4e58ec GR	15	struct hlist_head udplite_hash[UDP_HTABLE_SIZE];
ba4e58ec	16
f5b99bcd	17	static int udplite_rcv(struct sk_buff *skb)
ba4e58ec	18	{
759e5d00	19	return __udp4_lib_rcv(skb, udplite_hash, IPPROTO_UDPLITE);
ba4e58ec GR	20	}
ba4e58ec GR	21
f5b99bcd	22	static void udplite_err(struct sk_buff *skb, u32 info)
ba4e58ec	23	{
fc80be87	24	__udp4_lib_err(skb, info, udplite_hash);
ba4e58ec GR	25	}
	26
	27	static struct net_protocol udplite_protocol = {
	28	.handler = udplite_rcv,
	29	.err_handler = udplite_err,
	30	.no_policy = 1,
92f1fecb	31	.netns_ok = 1,
ba4e58ec GR	32	};
	33
	34	struct proto udplite_prot = {
	35	.name = "UDP-Lite",
	36	.owner = THIS_MODULE,
	37	.close = udp_lib_close,
	38	.connect = ip4_datagram_connect,
	39	.disconnect = udp_disconnect,
	40	.ioctl = udp_ioctl,
	41	.init = udplite_sk_init,
	42	.destroy = udp_destroy_sock,
	43	.setsockopt = udp_setsockopt,
	44	.getsockopt = udp_getsockopt,
	45	.sendmsg = udp_sendmsg,
	46	.recvmsg = udp_recvmsg,
	47	.sendpage = udp_sendpage,
	48	.backlog_rcv = udp_queue_rcv_skb,
	49	.hash = udp_lib_hash,
	50	.unhash = udp_lib_unhash,
6ba5a3c5	51	.get_port = udp_v4_get_port,
ba4e58ec	52	.obj_size = sizeof(struct udp_sock),
6ba5a3c5	53	.h.udp_hash = udplite_hash,
ba4e58ec GR	54	#ifdef CONFIG_COMPAT
	55	.compat_setsockopt = compat_udp_setsockopt,
	56	.compat_getsockopt = compat_udp_getsockopt,
	57	#endif
	58	};
	59
	60	static struct inet_protosw udplite4_protosw = {
	61	.type = SOCK_DGRAM,
	62	.protocol = IPPROTO_UDPLITE,
	63	.prot = &udplite_prot,
	64	.ops = &inet_dgram_ops,
	65	.capability = -1,
	66	.no_check = 0, /* must checksum (RFC 3828) */
	67	.flags = INET_PROTOSW_PERMANENT,
	68	};
	69
	70	#ifdef CONFIG_PROC_FS
ba4e58ec	71	static struct udp_seq_afinfo udplite4_seq_afinfo = {
ba4e58ec GR	72	.name = "udplite",
	73	.family = AF_INET,
	74	.hashtable = udplite_hash,
4ad96d39 DL	75	.seq_fops = {
	76	.owner = THIS_MODULE,
	77	},
dda61925 DL	78	.seq_ops = {
	79	.show = udp4_seq_show,
	80	},
ba4e58ec	81	};
ff2bac6a	82
84c375af PE	83	static int udplite4_proc_init_net(struct net *net)
	84	{
	85	return udp_proc_register(net, &udplite4_seq_afinfo);
	86	}
	87
	88	static void udplite4_proc_exit_net(struct net *net)
	89	{
	90	udp_proc_unregister(net, &udplite4_seq_afinfo);
	91	}
	92
	93	static struct pernet_operations udplite4_net_ops = {
	94	.init = udplite4_proc_init_net,
	95	.exit = udplite4_proc_exit_net,
	96	};
	97
ff2bac6a PE	98	static __init int udplite4_proc_init(void)
ff2bac6a PE	99	{
84c375af	100	return register_pernet_subsys(&udplite4_net_ops);
ff2bac6a PE	101	}
	102	#else
	103	static inline int udplite4_proc_init(void)
	104	{
	105	return 0;
	106	}
ba4e58ec GR	107	#endif
	108
	109	void __init udplite4_register(void)
	110	{
	111	if (proto_register(&udplite_prot, 1))
	112	goto out_register_err;
	113
	114	if (inet_add_protocol(&udplite_protocol, IPPROTO_UDPLITE) < 0)
	115	goto out_unregister_proto;
	116
	117	inet_register_protosw(&udplite4_protosw);
	118
ff2bac6a	119	if (udplite4_proc_init())
0dc47877	120	printk(KERN_ERR "%s: Cannot register /proc!\n", __func__);
ba4e58ec GR	121	return;
	122
	123	out_unregister_proto:
	124	proto_unregister(&udplite_prot);
	125	out_register_err:
0dc47877	126	printk(KERN_CRIT "%s: Cannot add UDP-Lite protocol.\n", __func__);
ba4e58ec GR	127	}
	128
	129	EXPORT_SYMBOL(udplite_hash);
	130	EXPORT_SYMBOL(udplite_prot);