[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;
}

#if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP) || \
    defined(CONFIG_IP_VS_PROTO_SCTP) || defined(CONFIG_IP_VS_PROTO_AH) || \
    defined(CONFIG_IP_VS_PROTO_ESP)
/*
 *	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;
}
#endif

/*
 *	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 *
__ipvs_proto_data_get(struct netns_ipvs *ipvs, unsigned short proto)
{
	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;
}

struct ip_vs_proto_data *
ip_vs_proto_data_get(struct net *net, unsigned short proto)
{
	struct netns_ipvs *ipvs = net_ipvs(net);

	return __ipvs_proto_data_get(ipvs, proto);
}
EXPORT_SYMBOL(ip_vs_proto_data_get);

/*
 *	Propagate event for state change to all protocols
 */
void ip_vs_protocol_timeout_change(struct netns_ipvs *ipvs, int flags)
{
	struct ip_vs_proto_data *pd;
	int i;

	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
		for (pd = ipvs->proto_data_table[i]; pd; pd = pd->next) {
			if (pd->pp->timeout_change)
				pd->pp->timeout_change(pd, 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
 */
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
#ifdef CONFIG_IP_VS_PROTO_UDP
	register_ip_vs_proto_netns(net, &ip_vs_protocol_udp);
#endif
#ifdef CONFIG_IP_VS_PROTO_SCTP
	register_ip_vs_proto_netns(net, &ip_vs_protocol_sctp);
#endif
#ifdef CONFIG_IP_VS_PROTO_AH
	register_ip_vs_proto_netns(net, &ip_vs_protocol_ah);
#endif
#ifdef CONFIG_IP_VS_PROTO_ESP
	register_ip_vs_proto_netns(net, &ip_vs_protocol_esp);
#endif
	return 0;
}

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);
	}
}

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 0;
}


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

	/* 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
091bb34c CG	63	#if defined(CONFIG_IP_VS_PROTO_TCP) \|\| defined(CONFIG_IP_VS_PROTO_UDP) \|\| \
	64	defined(CONFIG_IP_VS_PROTO_SCTP) \|\| defined(CONFIG_IP_VS_PROTO_AH) \|\| \
	65	defined(CONFIG_IP_VS_PROTO_ESP)
252c6410 HS	66	/*
	67	* register an ipvs protocols netns related data
	68	*/
	69	static int
	70	register_ip_vs_proto_netns(struct net net, struct ip_vs_protocol pp)
	71	{
	72	struct netns_ipvs *ipvs = net_ipvs(net);
	73	unsigned hash = IP_VS_PROTO_HASH(pp->protocol);
	74	struct ip_vs_proto_data *pd =
	75	kzalloc(sizeof(struct ip_vs_proto_data), GFP_ATOMIC);
	76
	77	if (!pd) {
	78	pr_err("%s(): no memory.\n", __func__);
	79	return -ENOMEM;
	80	}
	81	pd->pp = pp; /* For speed issues */
	82	pd->next = ipvs->proto_data_table[hash];
	83	ipvs->proto_data_table[hash] = pd;
	84	atomic_set(&pd->appcnt, 0); /* Init app counter */
	85
	86	if (pp->init_netns != NULL)
	87	pp->init_netns(net, pd);
	88
	89	return 0;
	90	}
091bb34c	91	#endif
1da177e4 LT	92
	93	/*
	94	* unregister an ipvs protocol
	95	*/
	96	static int unregister_ip_vs_protocol(struct ip_vs_protocol *pp)
	97	{
	98	struct ip_vs_protocol **pp_p;
	99	unsigned hash = IP_VS_PROTO_HASH(pp->protocol);
	100
	101	pp_p = &ip_vs_proto_table[hash];
	102	for (; pp_p; pp_p = &(pp_p)->next) {
	103	if (*pp_p == pp) {
	104	*pp_p = pp->next;
	105	if (pp->exit != NULL)
	106	pp->exit(pp);
	107	return 0;
	108	}
	109	}
	110
	111	return -ESRCH;
	112	}
	113
252c6410 HS	114	/*
	115	* unregister an ipvs protocols netns data
	116	*/
	117	static int
	118	unregister_ip_vs_proto_netns(struct net net, struct ip_vs_proto_data pd)
	119	{
	120	struct netns_ipvs *ipvs = net_ipvs(net);
	121	struct ip_vs_proto_data **pd_p;
	122	unsigned hash = IP_VS_PROTO_HASH(pd->pp->protocol);
	123
	124	pd_p = &ipvs->proto_data_table[hash];
	125	for (; pd_p; pd_p = &(pd_p)->next) {
	126	if (*pd_p == pd) {
	127	*pd_p = pd->next;
	128	if (pd->pp->exit_netns != NULL)
	129	pd->pp->exit_netns(net, pd);
	130	kfree(pd);
	131	return 0;
	132	}
	133	}
	134
	135	return -ESRCH;
	136	}
1da177e4 LT	137
	138	/*
	139	* get ip_vs_protocol object by its proto.
	140	*/
	141	struct ip_vs_protocol * ip_vs_proto_get(unsigned short proto)
	142	{
	143	struct ip_vs_protocol *pp;
	144	unsigned hash = IP_VS_PROTO_HASH(proto);
	145
	146	for (pp = ip_vs_proto_table[hash]; pp; pp = pp->next) {
	147	if (pp->protocol == proto)
	148	return pp;
	149	}
	150
	151	return NULL;
	152	}
9c3e1c39	153	EXPORT_SYMBOL(ip_vs_proto_get);
1da177e4	154
252c6410 HS	155	/*
	156	* get ip_vs_protocol object data by netns and proto
	157	*/
	158	struct ip_vs_proto_data *
9330419d	159	__ipvs_proto_data_get(struct netns_ipvs *ipvs, unsigned short proto)
252c6410	160	{
252c6410 HS	161	struct ip_vs_proto_data *pd;
	162	unsigned hash = IP_VS_PROTO_HASH(proto);
	163
	164	for (pd = ipvs->proto_data_table[hash]; pd; pd = pd->next) {
	165	if (pd->pp->protocol == proto)
	166	return pd;
	167	}
	168
	169	return NULL;
	170	}
9330419d HS	171
	172	struct ip_vs_proto_data *
	173	ip_vs_proto_data_get(struct net *net, unsigned short proto)
	174	{
	175	struct netns_ipvs *ipvs = net_ipvs(net);
	176
	177	return __ipvs_proto_data_get(ipvs, proto);
	178	}
252c6410	179	EXPORT_SYMBOL(ip_vs_proto_data_get);
1da177e4 LT	180
	181	/*
	182	* Propagate event for state change to all protocols
	183	*/
9330419d	184	void ip_vs_protocol_timeout_change(struct netns_ipvs *ipvs, int flags)
1da177e4	185	{
9330419d	186	struct ip_vs_proto_data *pd;
1da177e4 LT	187	int i;
	188
	189	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
9330419d HS	190	for (pd = ipvs->proto_data_table[i]; pd; pd = pd->next) {
	191	if (pd->pp->timeout_change)
	192	pd->pp->timeout_change(pd, flags);
1da177e4 LT	193	}
	194	}
	195	}
	196
	197
	198	int *
	199	ip_vs_create_timeout_table(int *table, int size)
	200	{
8b2ed4bb	201	return kmemdup(table, size, GFP_ATOMIC);
1da177e4 LT	202	}
	203
	204
	205	/*
	206	* Set timeout value for state specified by name
	207	*/
	208	int
36cbd3dc JE	209	ip_vs_set_state_timeout(int table, int num, const char const *names,
36cbd3dc JE	210	const char *name, int to)
1da177e4 LT	211	{
	212	int i;
	213
	214	if (!table \|\| !name \|\| !to)
	215	return -EINVAL;
	216
	217	for (i = 0; i < num; i++) {
	218	if (strcmp(names[i], name))
	219	continue;
	220	table[i] = to * HZ;
	221	return 0;
	222	}
	223	return -ENOENT;
	224	}
	225
	226
	227	const char * ip_vs_state_name(__u16 proto, int state)
	228	{
	229	struct ip_vs_protocol *pp = ip_vs_proto_get(proto);
	230
	231	if (pp == NULL \|\| pp->state_name == NULL)
2ad17def	232	return (IPPROTO_IP == proto) ? "NONE" : "ERR!";
1da177e4 LT	233	return pp->state_name(state);
	234	}
	235
	236
77eb8516	237	static void
3b047d9d JV	238	ip_vs_tcpudp_debug_packet_v4(struct ip_vs_protocol *pp,
	239	const struct sk_buff *skb,
	240	int offset,
	241	const char *msg)
1da177e4 LT	242	{
	243	char buf[128];
	244	struct iphdr _iph, *ih;
	245
	246	ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
	247	if (ih == NULL)
3d91c1a8	248	sprintf(buf, "TRUNCATED");
5661df7b	249	else if (ih->frag_off & htons(IP_OFFSET))
3d91c1a8	250	sprintf(buf, "%pI4->%pI4 frag", &ih->saddr, &ih->daddr);
1da177e4	251	else {
0d79641a JA	252	__be16 _ports[2], *pptr;
0d79641a JA	253
1da177e4 LT	254	pptr = skb_header_pointer(skb, offset + ih->ihl*4,
	255	sizeof(_ports), _ports);
	256	if (pptr == NULL)
3d91c1a8 PM	257	sprintf(buf, "TRUNCATED %pI4->%pI4",
3d91c1a8 PM	258	&ih->saddr, &ih->daddr);
1da177e4	259	else
3d91c1a8	260	sprintf(buf, "%pI4:%u->%pI4:%u",
14d5e834 HH	261	&ih->saddr, ntohs(pptr[0]),
14d5e834 HH	262	&ih->daddr, ntohs(pptr[1]));
1da177e4 LT	263	}
1da177e4 LT	264
3d91c1a8	265	pr_debug("%s: %s %s\n", msg, pp->name, buf);
1da177e4 LT	266	}
1da177e4 LT	267
3b047d9d	268	#ifdef CONFIG_IP_VS_IPV6
77eb8516	269	static void
3b047d9d JV	270	ip_vs_tcpudp_debug_packet_v6(struct ip_vs_protocol *pp,
	271	const struct sk_buff *skb,
	272	int offset,
	273	const char *msg)
	274	{
	275	char buf[192];
	276	struct ipv6hdr _iph, *ih;
	277
	278	ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
	279	if (ih == NULL)
3d91c1a8	280	sprintf(buf, "TRUNCATED");
3b047d9d	281	else if (ih->nexthdr == IPPROTO_FRAGMENT)
3d91c1a8	282	sprintf(buf, "%pI6->%pI6 frag", &ih->saddr, &ih->daddr);
3b047d9d JV	283	else {
	284	__be16 _ports[2], *pptr;
	285
	286	pptr = skb_header_pointer(skb, offset + sizeof(struct ipv6hdr),
	287	sizeof(_ports), _ports);
	288	if (pptr == NULL)
3d91c1a8 PM	289	sprintf(buf, "TRUNCATED %pI6->%pI6",
3d91c1a8 PM	290	&ih->saddr, &ih->daddr);
3b047d9d	291	else
3d91c1a8	292	sprintf(buf, "%pI6:%u->%pI6:%u",
38ff4fa4 HH	293	&ih->saddr, ntohs(pptr[0]),
38ff4fa4 HH	294	&ih->daddr, ntohs(pptr[1]));
3b047d9d JV	295	}
3b047d9d JV	296
3d91c1a8	297	pr_debug("%s: %s %s\n", msg, pp->name, buf);
3b047d9d JV	298	}
	299	#endif
	300
	301
	302	void
0d79641a	303	ip_vs_tcpudp_debug_packet(int af, struct ip_vs_protocol *pp,
3b047d9d JV	304	const struct sk_buff *skb,
	305	int offset,
	306	const char *msg)
	307	{
	308	#ifdef CONFIG_IP_VS_IPV6
0d79641a	309	if (af == AF_INET6)
3b047d9d JV	310	ip_vs_tcpudp_debug_packet_v6(pp, skb, offset, msg);
	311	else
	312	#endif
	313	ip_vs_tcpudp_debug_packet_v4(pp, skb, offset, msg);
	314	}
	315
61b1ab45 HS	316	/*
	317	* per network name-space init
	318	*/
7a4f0761	319	int __net_init __ip_vs_protocol_init(struct net *net)
61b1ab45	320	{
4a85b96c HS	321	#ifdef CONFIG_IP_VS_PROTO_TCP
4a85b96c HS	322	register_ip_vs_proto_netns(net, &ip_vs_protocol_tcp);
78b16bde HS	323	#endif
	324	#ifdef CONFIG_IP_VS_PROTO_UDP
	325	register_ip_vs_proto_netns(net, &ip_vs_protocol_udp);
9d934878 HS	326	#endif
	327	#ifdef CONFIG_IP_VS_PROTO_SCTP
	328	register_ip_vs_proto_netns(net, &ip_vs_protocol_sctp);
88fe2d37 HS	329	#endif
	330	#ifdef CONFIG_IP_VS_PROTO_AH
	331	register_ip_vs_proto_netns(net, &ip_vs_protocol_ah);
	332	#endif
	333	#ifdef CONFIG_IP_VS_PROTO_ESP
	334	register_ip_vs_proto_netns(net, &ip_vs_protocol_esp);
4a85b96c	335	#endif
61b1ab45 HS	336	return 0;
	337	}
	338
7a4f0761	339	void __net_exit __ip_vs_protocol_cleanup(struct net *net)
61b1ab45	340	{
4a85b96c HS	341	struct netns_ipvs *ipvs = net_ipvs(net);
	342	struct ip_vs_proto_data *pd;
	343	int i;
	344
	345	/* unregister all the ipvs proto data for this netns */
	346	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
	347	while ((pd = ipvs->proto_data_table[i]) != NULL)
	348	unregister_ip_vs_proto_netns(net, pd);
	349	}
61b1ab45 HS	350	}
61b1ab45 HS	351
048cf48b	352	int __init ip_vs_protocol_init(void)
1da177e4 LT	353	{
	354	char protocols[64];
	355	#define REGISTER_PROTOCOL(p) \
	356	do { \
	357	register_ip_vs_protocol(p); \
	358	strcat(protocols, ", "); \
	359	strcat(protocols, (p)->name); \
	360	} while (0)
	361
	362	protocols[0] = '\0';
	363	protocols[2] = '\0';
	364	#ifdef CONFIG_IP_VS_PROTO_TCP
	365	REGISTER_PROTOCOL(&ip_vs_protocol_tcp);
	366	#endif
	367	#ifdef CONFIG_IP_VS_PROTO_UDP
	368	REGISTER_PROTOCOL(&ip_vs_protocol_udp);
	369	#endif
2906f66a VMR	370	#ifdef CONFIG_IP_VS_PROTO_SCTP
	371	REGISTER_PROTOCOL(&ip_vs_protocol_sctp);
	372	#endif
1da177e4 LT	373	#ifdef CONFIG_IP_VS_PROTO_AH
	374	REGISTER_PROTOCOL(&ip_vs_protocol_ah);
	375	#endif
	376	#ifdef CONFIG_IP_VS_PROTO_ESP
	377	REGISTER_PROTOCOL(&ip_vs_protocol_esp);
	378	#endif
1e3e238e	379	pr_info("Registered protocols (%s)\n", &protocols[2]);
1da177e4 LT	380
	381	return 0;
	382	}
	383
	384
	385	void ip_vs_protocol_cleanup(void)
	386	{
	387	struct ip_vs_protocol *pp;
	388	int i;
	389
	390	/* unregister all the ipvs protocols */
	391	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
	392	while ((pp = ip_vs_proto_table[i]) != NULL)
	393	unregister_ip_vs_protocol(pp);
	394	}
	395	}