[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 <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 int 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 int hash = IP_VS_PROTO_HASH(pp->protocol);
	struct ip_vs_proto_data *pd =
			kzalloc(sizeof(struct ip_vs_proto_data), GFP_KERNEL);

	if (!pd)
		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) {
		int ret = pp->init_netns(net, pd);
		if (ret) {
			/* unlink an free proto data */
			ipvs->proto_data_table[hash] = pd->next;
			kfree(pd);
			return ret;
		}
	}

	return 0;
}

/*
 *	unregister an ipvs protocol
 */
static int unregister_ip_vs_protocol(struct ip_vs_protocol *pp)
{
	struct ip_vs_protocol **pp_p;
	unsigned int 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 int 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 int 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
 */
static struct ip_vs_proto_data *
__ipvs_proto_data_get(struct netns_ipvs *ipvs, unsigned short proto)
{
	struct ip_vs_proto_data *pd;
	unsigned int 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_KERNEL);
}


/*
 *	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, "%pI6c->%pI6c 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 %pI6c->%pI6c",
				&ih->saddr, &ih->daddr);
		else
			sprintf(buf, "%pI6c:%u->%pI6c:%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_net_init(struct net *net)
{
	int i, ret;
	static struct ip_vs_protocol *protos[] = {
#ifdef CONFIG_IP_VS_PROTO_TCP
        &ip_vs_protocol_tcp,
#endif
#ifdef CONFIG_IP_VS_PROTO_UDP
	&ip_vs_protocol_udp,
#endif
#ifdef CONFIG_IP_VS_PROTO_SCTP
	&ip_vs_protocol_sctp,
#endif
#ifdef CONFIG_IP_VS_PROTO_AH
	&ip_vs_protocol_ah,
#endif
#ifdef CONFIG_IP_VS_PROTO_ESP
	&ip_vs_protocol_esp,
#endif
	};

	for (i = 0; i < ARRAY_SIZE(protos); i++) {
		ret = register_ip_vs_proto_netns(net, protos[i]);
		if (ret < 0)
			goto cleanup;
	}
	return 0;

cleanup:
	ip_vs_protocol_net_cleanup(net);
	return ret;
}

void __net_exit ip_vs_protocol_net_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>
1da177e4 LT	28	#include <linux/stat.h>
	29	#include <linux/proc_fs.h>
	30
	31	#include <net/ip_vs.h>
	32
	33
	34	/*
	35	* IPVS protocols can only be registered/unregistered when the ipvs
	36	* module is loaded/unloaded, so no lock is needed in accessing the
	37	* ipvs protocol table.
	38	*/
	39
	40	#define IP_VS_PROTO_TAB_SIZE 32 /* must be power of 2 */
	41	#define IP_VS_PROTO_HASH(proto) ((proto) & (IP_VS_PROTO_TAB_SIZE-1))
	42
	43	static struct ip_vs_protocol *ip_vs_proto_table[IP_VS_PROTO_TAB_SIZE];
	44
	45
	46	/*
	47	* register an ipvs protocol
	48	*/
048cf48b	49	static int __used __init register_ip_vs_protocol(struct ip_vs_protocol *pp)
1da177e4	50	{
95c96174	51	unsigned int hash = IP_VS_PROTO_HASH(pp->protocol);
1da177e4 LT	52
	53	pp->next = ip_vs_proto_table[hash];
	54	ip_vs_proto_table[hash] = pp;
	55
	56	if (pp->init != NULL)
	57	pp->init(pp);
	58
	59	return 0;
	60	}
	61
252c6410 HS	62	/*
	63	* register an ipvs protocols netns related data
	64	*/
	65	static int
	66	register_ip_vs_proto_netns(struct net net, struct ip_vs_protocol pp)
	67	{
	68	struct netns_ipvs *ipvs = net_ipvs(net);
95c96174	69	unsigned int hash = IP_VS_PROTO_HASH(pp->protocol);
252c6410	70	struct ip_vs_proto_data *pd =
9615e61e	71	kzalloc(sizeof(struct ip_vs_proto_data), GFP_KERNEL);
252c6410	72
0a9ee813	73	if (!pd)
252c6410	74	return -ENOMEM;
0a9ee813	75
252c6410 HS	76	pd->pp = pp; /* For speed issues */
	77	pd->next = ipvs->proto_data_table[hash];
	78	ipvs->proto_data_table[hash] = pd;
	79	atomic_set(&pd->appcnt, 0); /* Init app counter */
	80
582b8e3e HS	81	if (pp->init_netns != NULL) {
	82	int ret = pp->init_netns(net, pd);
	83	if (ret) {
	84	/* unlink an free proto data */
	85	ipvs->proto_data_table[hash] = pd->next;
	86	kfree(pd);
	87	return ret;
	88	}
	89	}
252c6410 HS	90
	91	return 0;
	92	}
1da177e4 LT	93
	94	/*
	95	* unregister an ipvs protocol
	96	*/
	97	static int unregister_ip_vs_protocol(struct ip_vs_protocol *pp)
	98	{
	99	struct ip_vs_protocol **pp_p;
95c96174	100	unsigned int hash = IP_VS_PROTO_HASH(pp->protocol);
1da177e4 LT	101
	102	pp_p = &ip_vs_proto_table[hash];
	103	for (; pp_p; pp_p = &(pp_p)->next) {
	104	if (*pp_p == pp) {
	105	*pp_p = pp->next;
	106	if (pp->exit != NULL)
	107	pp->exit(pp);
	108	return 0;
	109	}
	110	}
	111
	112	return -ESRCH;
	113	}
	114
252c6410 HS	115	/*
	116	* unregister an ipvs protocols netns data
	117	*/
	118	static int
	119	unregister_ip_vs_proto_netns(struct net net, struct ip_vs_proto_data pd)
	120	{
	121	struct netns_ipvs *ipvs = net_ipvs(net);
	122	struct ip_vs_proto_data **pd_p;
95c96174	123	unsigned int hash = IP_VS_PROTO_HASH(pd->pp->protocol);
252c6410 HS	124
	125	pd_p = &ipvs->proto_data_table[hash];
	126	for (; pd_p; pd_p = &(pd_p)->next) {
	127	if (*pd_p == pd) {
	128	*pd_p = pd->next;
	129	if (pd->pp->exit_netns != NULL)
	130	pd->pp->exit_netns(net, pd);
	131	kfree(pd);
	132	return 0;
	133	}
	134	}
	135
	136	return -ESRCH;
	137	}
1da177e4 LT	138
	139	/*
	140	* get ip_vs_protocol object by its proto.
	141	*/
	142	struct ip_vs_protocol * ip_vs_proto_get(unsigned short proto)
	143	{
	144	struct ip_vs_protocol *pp;
95c96174	145	unsigned int hash = IP_VS_PROTO_HASH(proto);
1da177e4 LT	146
	147	for (pp = ip_vs_proto_table[hash]; pp; pp = pp->next) {
	148	if (pp->protocol == proto)
	149	return pp;
	150	}
	151
	152	return NULL;
	153	}
9c3e1c39	154	EXPORT_SYMBOL(ip_vs_proto_get);
1da177e4	155
252c6410 HS	156	/*
	157	* get ip_vs_protocol object data by netns and proto
	158	*/
068d5220	159	static struct ip_vs_proto_data *
9330419d	160	__ipvs_proto_data_get(struct netns_ipvs *ipvs, unsigned short proto)
252c6410	161	{
252c6410	162	struct ip_vs_proto_data *pd;
95c96174	163	unsigned int hash = IP_VS_PROTO_HASH(proto);
252c6410 HS	164
	165	for (pd = ipvs->proto_data_table[hash]; pd; pd = pd->next) {
	166	if (pd->pp->protocol == proto)
	167	return pd;
	168	}
	169
	170	return NULL;
	171	}
9330419d HS	172
	173	struct ip_vs_proto_data *
	174	ip_vs_proto_data_get(struct net *net, unsigned short proto)
	175	{
	176	struct netns_ipvs *ipvs = net_ipvs(net);
	177
	178	return __ipvs_proto_data_get(ipvs, proto);
	179	}
252c6410	180	EXPORT_SYMBOL(ip_vs_proto_data_get);
1da177e4 LT	181
	182	/*
	183	* Propagate event for state change to all protocols
	184	*/
9330419d	185	void ip_vs_protocol_timeout_change(struct netns_ipvs *ipvs, int flags)
1da177e4	186	{
9330419d	187	struct ip_vs_proto_data *pd;
1da177e4 LT	188	int i;
	189
	190	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
9330419d HS	191	for (pd = ipvs->proto_data_table[i]; pd; pd = pd->next) {
	192	if (pd->pp->timeout_change)
	193	pd->pp->timeout_change(pd, flags);
1da177e4 LT	194	}
	195	}
	196	}
	197
	198
	199	int *
	200	ip_vs_create_timeout_table(int *table, int size)
	201	{
41cff6d5	202	return kmemdup(table, size, GFP_KERNEL);
1da177e4 LT	203	}
	204
	205
	206	/*
	207	* Set timeout value for state specified by name
	208	*/
	209	int
36cbd3dc JE	210	ip_vs_set_state_timeout(int table, int num, const char const *names,
36cbd3dc JE	211	const char *name, int to)
1da177e4 LT	212	{
	213	int i;
	214
	215	if (!table \|\| !name \|\| !to)
	216	return -EINVAL;
	217
	218	for (i = 0; i < num; i++) {
	219	if (strcmp(names[i], name))
	220	continue;
	221	table[i] = to * HZ;
	222	return 0;
	223	}
	224	return -ENOENT;
	225	}
	226
	227
	228	const char * ip_vs_state_name(__u16 proto, int state)
	229	{
	230	struct ip_vs_protocol *pp = ip_vs_proto_get(proto);
	231
	232	if (pp == NULL \|\| pp->state_name == NULL)
2ad17def	233	return (IPPROTO_IP == proto) ? "NONE" : "ERR!";
1da177e4 LT	234	return pp->state_name(state);
	235	}
	236
	237
77eb8516	238	static void
3b047d9d JV	239	ip_vs_tcpudp_debug_packet_v4(struct ip_vs_protocol *pp,
	240	const struct sk_buff *skb,
	241	int offset,
	242	const char *msg)
1da177e4 LT	243	{
	244	char buf[128];
	245	struct iphdr _iph, *ih;
	246
	247	ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
	248	if (ih == NULL)
3d91c1a8	249	sprintf(buf, "TRUNCATED");
5661df7b	250	else if (ih->frag_off & htons(IP_OFFSET))
3d91c1a8	251	sprintf(buf, "%pI4->%pI4 frag", &ih->saddr, &ih->daddr);
1da177e4	252	else {
0d79641a JA	253	__be16 _ports[2], *pptr;
0d79641a JA	254
1da177e4 LT	255	pptr = skb_header_pointer(skb, offset + ih->ihl*4,
	256	sizeof(_ports), _ports);
	257	if (pptr == NULL)
3d91c1a8 PM	258	sprintf(buf, "TRUNCATED %pI4->%pI4",
3d91c1a8 PM	259	&ih->saddr, &ih->daddr);
1da177e4	260	else
3d91c1a8	261	sprintf(buf, "%pI4:%u->%pI4:%u",
14d5e834 HH	262	&ih->saddr, ntohs(pptr[0]),
14d5e834 HH	263	&ih->daddr, ntohs(pptr[1]));
1da177e4 LT	264	}
1da177e4 LT	265
3d91c1a8	266	pr_debug("%s: %s %s\n", msg, pp->name, buf);
1da177e4 LT	267	}
1da177e4 LT	268
3b047d9d	269	#ifdef CONFIG_IP_VS_IPV6
77eb8516	270	static void
3b047d9d JV	271	ip_vs_tcpudp_debug_packet_v6(struct ip_vs_protocol *pp,
	272	const struct sk_buff *skb,
	273	int offset,
	274	const char *msg)
	275	{
	276	char buf[192];
	277	struct ipv6hdr _iph, *ih;
	278
	279	ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
	280	if (ih == NULL)
3d91c1a8	281	sprintf(buf, "TRUNCATED");
3b047d9d	282	else if (ih->nexthdr == IPPROTO_FRAGMENT)
120b9c14	283	sprintf(buf, "%pI6c->%pI6c frag", &ih->saddr, &ih->daddr);
3b047d9d JV	284	else {
	285	__be16 _ports[2], *pptr;
	286
	287	pptr = skb_header_pointer(skb, offset + sizeof(struct ipv6hdr),
	288	sizeof(_ports), _ports);
	289	if (pptr == NULL)
120b9c14	290	sprintf(buf, "TRUNCATED %pI6c->%pI6c",
3d91c1a8	291	&ih->saddr, &ih->daddr);
3b047d9d	292	else
120b9c14	293	sprintf(buf, "%pI6c:%u->%pI6c:%u",
38ff4fa4 HH	294	&ih->saddr, ntohs(pptr[0]),
38ff4fa4 HH	295	&ih->daddr, ntohs(pptr[1]));
3b047d9d JV	296	}
3b047d9d JV	297
3d91c1a8	298	pr_debug("%s: %s %s\n", msg, pp->name, buf);
3b047d9d JV	299	}
	300	#endif
	301
	302
	303	void
0d79641a	304	ip_vs_tcpudp_debug_packet(int af, struct ip_vs_protocol *pp,
3b047d9d JV	305	const struct sk_buff *skb,
	306	int offset,
	307	const char *msg)
	308	{
	309	#ifdef CONFIG_IP_VS_IPV6
0d79641a	310	if (af == AF_INET6)
3b047d9d JV	311	ip_vs_tcpudp_debug_packet_v6(pp, skb, offset, msg);
	312	else
	313	#endif
	314	ip_vs_tcpudp_debug_packet_v4(pp, skb, offset, msg);
	315	}
	316
61b1ab45 HS	317	/*
	318	* per network name-space init
	319	*/
503cf15a	320	int __net_init ip_vs_protocol_net_init(struct net *net)
61b1ab45	321	{
7118c07a SL	322	int i, ret;
7118c07a SL	323	static struct ip_vs_protocol *protos[] = {
4a85b96c	324	#ifdef CONFIG_IP_VS_PROTO_TCP
7118c07a	325	&ip_vs_protocol_tcp,
78b16bde HS	326	#endif
78b16bde HS	327	#ifdef CONFIG_IP_VS_PROTO_UDP
7118c07a	328	&ip_vs_protocol_udp,
9d934878 HS	329	#endif
9d934878 HS	330	#ifdef CONFIG_IP_VS_PROTO_SCTP
7118c07a	331	&ip_vs_protocol_sctp,
88fe2d37 HS	332	#endif
88fe2d37 HS	333	#ifdef CONFIG_IP_VS_PROTO_AH
7118c07a	334	&ip_vs_protocol_ah,
88fe2d37 HS	335	#endif
88fe2d37 HS	336	#ifdef CONFIG_IP_VS_PROTO_ESP
7118c07a	337	&ip_vs_protocol_esp,
4a85b96c	338	#endif
7118c07a SL	339	};
	340
	341	for (i = 0; i < ARRAY_SIZE(protos); i++) {
	342	ret = register_ip_vs_proto_netns(net, protos[i]);
	343	if (ret < 0)
	344	goto cleanup;
	345	}
61b1ab45	346	return 0;
7118c07a SL	347
	348	cleanup:
	349	ip_vs_protocol_net_cleanup(net);
	350	return ret;
61b1ab45 HS	351	}
61b1ab45 HS	352
503cf15a	353	void __net_exit ip_vs_protocol_net_cleanup(struct net *net)
61b1ab45	354	{
4a85b96c HS	355	struct netns_ipvs *ipvs = net_ipvs(net);
	356	struct ip_vs_proto_data *pd;
	357	int i;
	358
	359	/* unregister all the ipvs proto data for this netns */
	360	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
	361	while ((pd = ipvs->proto_data_table[i]) != NULL)
	362	unregister_ip_vs_proto_netns(net, pd);
	363	}
61b1ab45 HS	364	}
61b1ab45 HS	365
048cf48b	366	int __init ip_vs_protocol_init(void)
1da177e4 LT	367	{
	368	char protocols[64];
	369	#define REGISTER_PROTOCOL(p) \
	370	do { \
	371	register_ip_vs_protocol(p); \
	372	strcat(protocols, ", "); \
	373	strcat(protocols, (p)->name); \
	374	} while (0)
	375
	376	protocols[0] = '\0';
	377	protocols[2] = '\0';
	378	#ifdef CONFIG_IP_VS_PROTO_TCP
	379	REGISTER_PROTOCOL(&ip_vs_protocol_tcp);
	380	#endif
	381	#ifdef CONFIG_IP_VS_PROTO_UDP
	382	REGISTER_PROTOCOL(&ip_vs_protocol_udp);
	383	#endif
2906f66a VMR	384	#ifdef CONFIG_IP_VS_PROTO_SCTP
	385	REGISTER_PROTOCOL(&ip_vs_protocol_sctp);
	386	#endif
1da177e4 LT	387	#ifdef CONFIG_IP_VS_PROTO_AH
	388	REGISTER_PROTOCOL(&ip_vs_protocol_ah);
	389	#endif
	390	#ifdef CONFIG_IP_VS_PROTO_ESP
	391	REGISTER_PROTOCOL(&ip_vs_protocol_esp);
	392	#endif
1e3e238e	393	pr_info("Registered protocols (%s)\n", &protocols[2]);
1da177e4 LT	394
	395	return 0;
	396	}
	397
	398
	399	void ip_vs_protocol_cleanup(void)
	400	{
	401	struct ip_vs_protocol *pp;
	402	int i;
	403
	404	/* unregister all the ipvs protocols */
	405	for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) {
	406	while ((pp = ip_vs_proto_table[i]) != NULL)
	407	unregister_ip_vs_protocol(pp);
	408	}
	409	}