[deliverable/linux.git] / net / netfilter / ipvs / ip_vs_proto.c

/*
 * ip_vs_proto.c: transport protocol load balancing support for IPVS
 *
 * Authors:     Wensong Zhang <wensong@linuxvirtualserver.org>
 *              Julian Anastasov <ja@ssi.bg>
 *
 *              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.
 *
 * Changes:
 *
 */

#define KMSG_COMPONENT "IPVS"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/gfp.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <net/protocol.h>
#include <net/tcp.h>
#include <net/udp.h>
#include <asm/system.h>
#include <linux/stat.h>
#include <linux/proc_fs.h>

#include <net/ip_vs.h>


/*
 * IPVS protocols can only be registered/unregistered when the ipvs
 * module is loaded/unloaded, so no lock is needed in accessing the
 * ipvs protocol table.
 */

#define IP_VS_PROTO_TAB_SIZE		32	/* must be power of 2 */
#define IP_VS_PROTO_HASH(proto)		((proto) & (IP_VS_PROTO_TAB_SIZE-1))

static struct ip_vs_protocol *ip_vs_proto_table[IP_VS_PROTO_TAB_SIZE];


/*
 *	register an ipvs protocol
 */
static int __used __init register_ip_vs_protocol(struct ip_vs_protocol *pp)
{
	unsigned hash = IP_VS_PROTO_HASH(pp->protocol);

	pp->next = ip_vs_proto_table[hash];
	ip_vs_proto_table[hash] = pp;

	if (pp->init != NULL)
		pp->init(pp);

	return 0;
}

/*
 *	register an ipvs protocols netns related data
 */
static int
register_ip_vs_proto_netns(struct net *net, struct ip_vs_protocol *pp)
{
	struct netns_ipvs *ipvs = net_ipvs(net);
	unsigned hash = IP_VS_PROTO_HASH(pp->protocol);
	struct ip_vs_proto_data *pd =
			kzalloc(sizeof(struct ip_vs_proto_data), GFP_ATOMIC);

	if (!pd) {
		pr_err("%s(): no memory.\n", __func__);
		return -ENOMEM;
	}
	pd->pp = pp;	/* For speed issues */
	pd->next = ipvs->proto_data_table[hash];
	ipvs->proto_data_table[hash] = pd;
	atomic_set(&pd->appcnt, 0);	/* Init app counter */

	if (pp->init_netns != NULL)
		pp->init_netns(net, pd);

	return 0;
}

/*
 *	unregister an ipvs protocol
 */
static int unregister_ip_vs_protocol(struct ip_vs_protocol *pp)
{
	struct ip_vs_protocol **pp_p;
	unsigned hash = IP_VS_PROTO_HASH(pp->protocol);

	pp_p = &ip_vs_proto_table[hash];
	for (; *pp_p; pp_p = &(*pp_p)->next) {
		if (*pp_p == pp) {
			*pp_p = pp->next;
			if (pp->exit != NULL)
				pp->exit(pp);
			return 0;
		}
	}

	return -ESRCH;
}

/*
 *	unregister an ipvs protocols netns data
 */
static int
unregister_ip_vs_proto_netns(struct net *net, struct ip_vs_proto_data *pd)
{
	struct netns_ipvs *ipvs = net_ipvs(net);
	struct ip_vs_proto_data **pd_p;
	unsigned hash = IP_VS_PROTO_HASH(pd->pp->protocol);

	pd_p = &ipvs->proto_data_table[hash];
	for (; *pd_p; pd_p = &(*pd_p)->next) {
		if (*pd_p == pd) {
			*pd_p = pd->next;
			if (pd->pp->exit_netns != NULL)
				pd->pp->exit_netns(net, pd);
			kfree(pd);
			return 0;
		}
	}

	return -ESRCH;
}

/*
 *	get ip_vs_protocol object by its proto.
 */
struct ip_vs_protocol * ip_vs_proto_get(unsigned short proto)
{
	struct ip_vs_protocol *pp;
	unsigned hash = IP_VS_PROTO_HASH(proto);

	for (pp = ip_vs_proto_table[hash]; pp; pp = pp->next) {
		if (pp->protocol == proto)
			return pp;
	}

	return NULL;
}
EXPORT_SYMBOL(ip_vs_proto_get);

/*
 *	get ip_vs_protocol object data by netns and proto
 */
struct ip_vs_proto_data *
ip_vs_proto_data_get(struct net *net, unsigned short proto)
{
	struct netns_ipvs *ipvs = net_ipvs(net);
	struct ip_vs_proto_data *pd;
	unsigned hash = IP_VS_PROTO_HASH(proto);

	for (pd = ipvs->proto_data_table[hash]; pd; pd = pd->next) {
		if (pd->pp->protocol == proto)
			return pd;
	}

	return NULL;
}
EXPORT_SYMBOL(ip_vs_proto_data_get);

/*
 *	Propagate event for state change to all protocols
 */
void ip_vs_protocol_timeout_change(int flags)
{
	struct ip_vs_protocol *pp;
	int i;

	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
		for (pp = ip_vs_proto_table[i]; pp; pp = pp->next) {
			if (pp->timeout_change)
				pp->timeout_change(pp, flags);
		}
	}
}


int *
ip_vs_create_timeout_table(int *table, int size)
{
	return kmemdup(table, size, GFP_ATOMIC);
}


/*
 *	Set timeout value for state specified by name
 */
int
ip_vs_set_state_timeout(int *table, int num, const char *const *names,
			const char *name, int to)
{
	int i;

	if (!table || !name || !to)
		return -EINVAL;

	for (i = 0; i < num; i++) {
		if (strcmp(names[i], name))
			continue;
		table[i] = to * HZ;
		return 0;
	}
	return -ENOENT;
}


const char * ip_vs_state_name(__u16 proto, int state)
{
	struct ip_vs_protocol *pp = ip_vs_proto_get(proto);

	if (pp == NULL || pp->state_name == NULL)
		return (IPPROTO_IP == proto) ? "NONE" : "ERR!";
	return pp->state_name(state);
}


static void
ip_vs_tcpudp_debug_packet_v4(struct ip_vs_protocol *pp,
			     const struct sk_buff *skb,
			     int offset,
			     const char *msg)
{
	char buf[128];
	struct iphdr _iph, *ih;

	ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
	if (ih == NULL)
		sprintf(buf, "TRUNCATED");
	else if (ih->frag_off & htons(IP_OFFSET))
		sprintf(buf, "%pI4->%pI4 frag", &ih->saddr, &ih->daddr);
	else {
		__be16 _ports[2], *pptr;

		pptr = skb_header_pointer(skb, offset + ih->ihl*4,
					  sizeof(_ports), _ports);
		if (pptr == NULL)
			sprintf(buf, "TRUNCATED %pI4->%pI4",
				&ih->saddr, &ih->daddr);
		else
			sprintf(buf, "%pI4:%u->%pI4:%u",
				&ih->saddr, ntohs(pptr[0]),
				&ih->daddr, ntohs(pptr[1]));
	}

	pr_debug("%s: %s %s\n", msg, pp->name, buf);
}

#ifdef CONFIG_IP_VS_IPV6
static void
ip_vs_tcpudp_debug_packet_v6(struct ip_vs_protocol *pp,
			     const struct sk_buff *skb,
			     int offset,
			     const char *msg)
{
	char buf[192];
	struct ipv6hdr _iph, *ih;

	ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
	if (ih == NULL)
		sprintf(buf, "TRUNCATED");
	else if (ih->nexthdr == IPPROTO_FRAGMENT)
		sprintf(buf, "%pI6->%pI6 frag",	&ih->saddr, &ih->daddr);
	else {
		__be16 _ports[2], *pptr;

		pptr = skb_header_pointer(skb, offset + sizeof(struct ipv6hdr),
					  sizeof(_ports), _ports);
		if (pptr == NULL)
			sprintf(buf, "TRUNCATED %pI6->%pI6",
				&ih->saddr, &ih->daddr);
		else
			sprintf(buf, "%pI6:%u->%pI6:%u",
				&ih->saddr, ntohs(pptr[0]),
				&ih->daddr, ntohs(pptr[1]));
	}

	pr_debug("%s: %s %s\n", msg, pp->name, buf);
}
#endif


void
ip_vs_tcpudp_debug_packet(int af, struct ip_vs_protocol *pp,
			  const struct sk_buff *skb,
			  int offset,
			  const char *msg)
{
#ifdef CONFIG_IP_VS_IPV6
	if (af == AF_INET6)
		ip_vs_tcpudp_debug_packet_v6(pp, skb, offset, msg);
	else
#endif
		ip_vs_tcpudp_debug_packet_v4(pp, skb, offset, msg);
}

/*
 * per network name-space init
 */
static int __net_init __ip_vs_protocol_init(struct net *net)
{
#ifdef CONFIG_IP_VS_PROTO_TCP
	register_ip_vs_proto_netns(net, &ip_vs_protocol_tcp);
#endif
	return 0;
}

static void __net_exit __ip_vs_protocol_cleanup(struct net *net)
{
	struct netns_ipvs *ipvs = net_ipvs(net);
	struct ip_vs_proto_data *pd;
	int i;

	/* unregister all the ipvs proto data for this netns */
	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
		while ((pd = ipvs->proto_data_table[i]) != NULL)
			unregister_ip_vs_proto_netns(net, pd);
	}
}

static struct pernet_operations ipvs_proto_ops = {
	.init = __ip_vs_protocol_init,
	.exit = __ip_vs_protocol_cleanup,
};

int __init ip_vs_protocol_init(void)
{
	char protocols[64];
#define REGISTER_PROTOCOL(p)			\
	do {					\
		register_ip_vs_protocol(p);	\
		strcat(protocols, ", ");	\
		strcat(protocols, (p)->name);	\
	} while (0)

	protocols[0] = '\0';
	protocols[2] = '\0';
#ifdef CONFIG_IP_VS_PROTO_TCP
	REGISTER_PROTOCOL(&ip_vs_protocol_tcp);
#endif
#ifdef CONFIG_IP_VS_PROTO_UDP
	REGISTER_PROTOCOL(&ip_vs_protocol_udp);
#endif
#ifdef CONFIG_IP_VS_PROTO_SCTP
	REGISTER_PROTOCOL(&ip_vs_protocol_sctp);
#endif
#ifdef CONFIG_IP_VS_PROTO_AH
	REGISTER_PROTOCOL(&ip_vs_protocol_ah);
#endif
#ifdef CONFIG_IP_VS_PROTO_ESP
	REGISTER_PROTOCOL(&ip_vs_protocol_esp);
#endif
	pr_info("Registered protocols (%s)\n", &protocols[2]);
	return register_pernet_subsys(&ipvs_proto_ops);

	return 0;
}


void ip_vs_protocol_cleanup(void)
{
	struct ip_vs_protocol *pp;
	int i;

	unregister_pernet_subsys(&ipvs_proto_ops);
	/* unregister all the ipvs protocols */
	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
		while ((pp = ip_vs_proto_table[i]) != NULL)
			unregister_ip_vs_protocol(pp);
	}
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* ip_vs_proto.c: transport protocol load balancing support for IPVS
	3	*
1da177e4 LT	4	* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
	5	* Julian Anastasov <ja@ssi.bg>
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License
	9	* as published by the Free Software Foundation; either version
	10	* 2 of the License, or (at your option) any later version.
	11	*
	12	* Changes:
	13	*
	14	*/
	15
9aada7ac HE	16	#define KMSG_COMPONENT "IPVS"
	17	#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
	18
1da177e4 LT	19	#include <linux/module.h>
	20	#include <linux/kernel.h>
	21	#include <linux/skbuff.h>
5a0e3ad6	22	#include <linux/gfp.h>
1da177e4 LT	23	#include <linux/in.h>
	24	#include <linux/ip.h>
	25	#include <net/protocol.h>
	26	#include <net/tcp.h>
	27	#include <net/udp.h>
	28	#include <asm/system.h>
	29	#include <linux/stat.h>
	30	#include <linux/proc_fs.h>
	31
	32	#include <net/ip_vs.h>
	33
	34
	35	/*
	36	* IPVS protocols can only be registered/unregistered when the ipvs
	37	* module is loaded/unloaded, so no lock is needed in accessing the
	38	* ipvs protocol table.
	39	*/
	40
	41	#define IP_VS_PROTO_TAB_SIZE 32 /* must be power of 2 */
	42	#define IP_VS_PROTO_HASH(proto) ((proto) & (IP_VS_PROTO_TAB_SIZE-1))
	43
	44	static struct ip_vs_protocol *ip_vs_proto_table[IP_VS_PROTO_TAB_SIZE];
	45
	46
	47	/*
	48	* register an ipvs protocol
	49	*/
048cf48b	50	static int __used __init register_ip_vs_protocol(struct ip_vs_protocol *pp)
1da177e4 LT	51	{
	52	unsigned hash = IP_VS_PROTO_HASH(pp->protocol);
	53
	54	pp->next = ip_vs_proto_table[hash];
	55	ip_vs_proto_table[hash] = pp;
	56
	57	if (pp->init != NULL)
	58	pp->init(pp);
	59
	60	return 0;
	61	}
	62
252c6410 HS	63	/*
	64	* register an ipvs protocols netns related data
	65	*/
	66	static int
	67	register_ip_vs_proto_netns(struct net net, struct ip_vs_protocol pp)
	68	{
	69	struct netns_ipvs *ipvs = net_ipvs(net);
	70	unsigned hash = IP_VS_PROTO_HASH(pp->protocol);
	71	struct ip_vs_proto_data *pd =
	72	kzalloc(sizeof(struct ip_vs_proto_data), GFP_ATOMIC);
	73
	74	if (!pd) {
	75	pr_err("%s(): no memory.\n", __func__);
	76	return -ENOMEM;
	77	}
	78	pd->pp = pp; /* For speed issues */
	79	pd->next = ipvs->proto_data_table[hash];
	80	ipvs->proto_data_table[hash] = pd;
	81	atomic_set(&pd->appcnt, 0); /* Init app counter */
	82
	83	if (pp->init_netns != NULL)
	84	pp->init_netns(net, pd);
	85
	86	return 0;
	87	}
1da177e4 LT	88
	89	/*
	90	* unregister an ipvs protocol
	91	*/
	92	static int unregister_ip_vs_protocol(struct ip_vs_protocol *pp)
	93	{
	94	struct ip_vs_protocol **pp_p;
	95	unsigned hash = IP_VS_PROTO_HASH(pp->protocol);
	96
	97	pp_p = &ip_vs_proto_table[hash];
	98	for (; pp_p; pp_p = &(pp_p)->next) {
	99	if (*pp_p == pp) {
	100	*pp_p = pp->next;
	101	if (pp->exit != NULL)
	102	pp->exit(pp);
	103	return 0;
	104	}
	105	}
	106
	107	return -ESRCH;
	108	}
	109
252c6410 HS	110	/*
	111	* unregister an ipvs protocols netns data
	112	*/
	113	static int
	114	unregister_ip_vs_proto_netns(struct net net, struct ip_vs_proto_data pd)
	115	{
	116	struct netns_ipvs *ipvs = net_ipvs(net);
	117	struct ip_vs_proto_data **pd_p;
	118	unsigned hash = IP_VS_PROTO_HASH(pd->pp->protocol);
	119
	120	pd_p = &ipvs->proto_data_table[hash];
	121	for (; pd_p; pd_p = &(pd_p)->next) {
	122	if (*pd_p == pd) {
	123	*pd_p = pd->next;
	124	if (pd->pp->exit_netns != NULL)
	125	pd->pp->exit_netns(net, pd);
	126	kfree(pd);
	127	return 0;
	128	}
	129	}
	130
	131	return -ESRCH;
	132	}
1da177e4 LT	133
	134	/*
	135	* get ip_vs_protocol object by its proto.
	136	*/
	137	struct ip_vs_protocol * ip_vs_proto_get(unsigned short proto)
	138	{
	139	struct ip_vs_protocol *pp;
	140	unsigned hash = IP_VS_PROTO_HASH(proto);
	141
	142	for (pp = ip_vs_proto_table[hash]; pp; pp = pp->next) {
	143	if (pp->protocol == proto)
	144	return pp;
	145	}
	146
	147	return NULL;
	148	}
9c3e1c39	149	EXPORT_SYMBOL(ip_vs_proto_get);
1da177e4	150
252c6410 HS	151	/*
	152	* get ip_vs_protocol object data by netns and proto
	153	*/
	154	struct ip_vs_proto_data *
	155	ip_vs_proto_data_get(struct net *net, unsigned short proto)
	156	{
	157	struct netns_ipvs *ipvs = net_ipvs(net);
	158	struct ip_vs_proto_data *pd;
	159	unsigned hash = IP_VS_PROTO_HASH(proto);
	160
	161	for (pd = ipvs->proto_data_table[hash]; pd; pd = pd->next) {
	162	if (pd->pp->protocol == proto)
	163	return pd;
	164	}
	165
	166	return NULL;
	167	}
	168	EXPORT_SYMBOL(ip_vs_proto_data_get);
1da177e4 LT	169
	170	/*
	171	* Propagate event for state change to all protocols
	172	*/
	173	void ip_vs_protocol_timeout_change(int flags)
	174	{
	175	struct ip_vs_protocol *pp;
	176	int i;
	177
	178	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
	179	for (pp = ip_vs_proto_table[i]; pp; pp = pp->next) {
	180	if (pp->timeout_change)
	181	pp->timeout_change(pp, flags);
	182	}
	183	}
	184	}
	185
	186
	187	int *
	188	ip_vs_create_timeout_table(int *table, int size)
	189	{
8b2ed4bb	190	return kmemdup(table, size, GFP_ATOMIC);
1da177e4 LT	191	}
	192
	193
	194	/*
	195	* Set timeout value for state specified by name
	196	*/
	197	int
36cbd3dc JE	198	ip_vs_set_state_timeout(int table, int num, const char const *names,
36cbd3dc JE	199	const char *name, int to)
1da177e4 LT	200	{
	201	int i;
	202
	203	if (!table \|\| !name \|\| !to)
	204	return -EINVAL;
	205
	206	for (i = 0; i < num; i++) {
	207	if (strcmp(names[i], name))
	208	continue;
	209	table[i] = to * HZ;
	210	return 0;
	211	}
	212	return -ENOENT;
	213	}
	214
	215
	216	const char * ip_vs_state_name(__u16 proto, int state)
	217	{
	218	struct ip_vs_protocol *pp = ip_vs_proto_get(proto);
	219
	220	if (pp == NULL \|\| pp->state_name == NULL)
2ad17def	221	return (IPPROTO_IP == proto) ? "NONE" : "ERR!";
1da177e4 LT	222	return pp->state_name(state);
	223	}
	224
	225
77eb8516	226	static void
3b047d9d JV	227	ip_vs_tcpudp_debug_packet_v4(struct ip_vs_protocol *pp,
	228	const struct sk_buff *skb,
	229	int offset,
	230	const char *msg)
1da177e4 LT	231	{
	232	char buf[128];
	233	struct iphdr _iph, *ih;
	234
	235	ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
	236	if (ih == NULL)
3d91c1a8	237	sprintf(buf, "TRUNCATED");
5661df7b	238	else if (ih->frag_off & htons(IP_OFFSET))
3d91c1a8	239	sprintf(buf, "%pI4->%pI4 frag", &ih->saddr, &ih->daddr);
1da177e4	240	else {
0d79641a JA	241	__be16 _ports[2], *pptr;
0d79641a JA	242
1da177e4 LT	243	pptr = skb_header_pointer(skb, offset + ih->ihl*4,
	244	sizeof(_ports), _ports);
	245	if (pptr == NULL)
3d91c1a8 PM	246	sprintf(buf, "TRUNCATED %pI4->%pI4",
3d91c1a8 PM	247	&ih->saddr, &ih->daddr);
1da177e4	248	else
3d91c1a8	249	sprintf(buf, "%pI4:%u->%pI4:%u",
14d5e834 HH	250	&ih->saddr, ntohs(pptr[0]),
14d5e834 HH	251	&ih->daddr, ntohs(pptr[1]));
1da177e4 LT	252	}
1da177e4 LT	253
3d91c1a8	254	pr_debug("%s: %s %s\n", msg, pp->name, buf);
1da177e4 LT	255	}
1da177e4 LT	256
3b047d9d	257	#ifdef CONFIG_IP_VS_IPV6
77eb8516	258	static void
3b047d9d JV	259	ip_vs_tcpudp_debug_packet_v6(struct ip_vs_protocol *pp,
	260	const struct sk_buff *skb,
	261	int offset,
	262	const char *msg)
	263	{
	264	char buf[192];
	265	struct ipv6hdr _iph, *ih;
	266
	267	ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
	268	if (ih == NULL)
3d91c1a8	269	sprintf(buf, "TRUNCATED");
3b047d9d	270	else if (ih->nexthdr == IPPROTO_FRAGMENT)
3d91c1a8	271	sprintf(buf, "%pI6->%pI6 frag", &ih->saddr, &ih->daddr);
3b047d9d JV	272	else {
	273	__be16 _ports[2], *pptr;
	274
	275	pptr = skb_header_pointer(skb, offset + sizeof(struct ipv6hdr),
	276	sizeof(_ports), _ports);
	277	if (pptr == NULL)
3d91c1a8 PM	278	sprintf(buf, "TRUNCATED %pI6->%pI6",
3d91c1a8 PM	279	&ih->saddr, &ih->daddr);
3b047d9d	280	else
3d91c1a8	281	sprintf(buf, "%pI6:%u->%pI6:%u",
38ff4fa4 HH	282	&ih->saddr, ntohs(pptr[0]),
38ff4fa4 HH	283	&ih->daddr, ntohs(pptr[1]));
3b047d9d JV	284	}
3b047d9d JV	285
3d91c1a8	286	pr_debug("%s: %s %s\n", msg, pp->name, buf);
3b047d9d JV	287	}
	288	#endif
	289
	290
	291	void
0d79641a	292	ip_vs_tcpudp_debug_packet(int af, struct ip_vs_protocol *pp,
3b047d9d JV	293	const struct sk_buff *skb,
	294	int offset,
	295	const char *msg)
	296	{
	297	#ifdef CONFIG_IP_VS_IPV6
0d79641a	298	if (af == AF_INET6)
3b047d9d JV	299	ip_vs_tcpudp_debug_packet_v6(pp, skb, offset, msg);
	300	else
	301	#endif
	302	ip_vs_tcpudp_debug_packet_v4(pp, skb, offset, msg);
	303	}
	304
61b1ab45 HS	305	/*
	306	* per network name-space init
	307	*/
	308	static int __net_init __ip_vs_protocol_init(struct net *net)
	309	{
4a85b96c HS	310	#ifdef CONFIG_IP_VS_PROTO_TCP
	311	register_ip_vs_proto_netns(net, &ip_vs_protocol_tcp);
	312	#endif
61b1ab45 HS	313	return 0;
	314	}
	315
	316	static void __net_exit __ip_vs_protocol_cleanup(struct net *net)
	317	{
4a85b96c HS	318	struct netns_ipvs *ipvs = net_ipvs(net);
	319	struct ip_vs_proto_data *pd;
	320	int i;
	321
	322	/* unregister all the ipvs proto data for this netns */
	323	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
	324	while ((pd = ipvs->proto_data_table[i]) != NULL)
	325	unregister_ip_vs_proto_netns(net, pd);
	326	}
61b1ab45 HS	327	}
	328
	329	static struct pernet_operations ipvs_proto_ops = {
	330	.init = __ip_vs_protocol_init,
	331	.exit = __ip_vs_protocol_cleanup,
	332	};
1da177e4	333
048cf48b	334	int __init ip_vs_protocol_init(void)
1da177e4 LT	335	{
	336	char protocols[64];
	337	#define REGISTER_PROTOCOL(p) \
	338	do { \
	339	register_ip_vs_protocol(p); \
	340	strcat(protocols, ", "); \
	341	strcat(protocols, (p)->name); \
	342	} while (0)
	343
	344	protocols[0] = '\0';
	345	protocols[2] = '\0';
	346	#ifdef CONFIG_IP_VS_PROTO_TCP
	347	REGISTER_PROTOCOL(&ip_vs_protocol_tcp);
	348	#endif
	349	#ifdef CONFIG_IP_VS_PROTO_UDP
	350	REGISTER_PROTOCOL(&ip_vs_protocol_udp);
	351	#endif
2906f66a VMR	352	#ifdef CONFIG_IP_VS_PROTO_SCTP
	353	REGISTER_PROTOCOL(&ip_vs_protocol_sctp);
	354	#endif
1da177e4 LT	355	#ifdef CONFIG_IP_VS_PROTO_AH
	356	REGISTER_PROTOCOL(&ip_vs_protocol_ah);
	357	#endif
	358	#ifdef CONFIG_IP_VS_PROTO_ESP
	359	REGISTER_PROTOCOL(&ip_vs_protocol_esp);
	360	#endif
1e3e238e	361	pr_info("Registered protocols (%s)\n", &protocols[2]);
61b1ab45	362	return register_pernet_subsys(&ipvs_proto_ops);
1da177e4 LT	363
	364	return 0;
	365	}
	366
	367
	368	void ip_vs_protocol_cleanup(void)
	369	{
	370	struct ip_vs_protocol *pp;
	371	int i;
	372
61b1ab45	373	unregister_pernet_subsys(&ipvs_proto_ops);
1da177e4 LT	374	/* unregister all the ipvs protocols */
	375	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
	376	while ((pp = ip_vs_proto_table[i]) != NULL)
	377	unregister_ip_vs_protocol(pp);
	378	}
	379	}