[linux-2.6-block.git] / net / netfilter / ipset / ip_set_hash_netnet.c

/* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
 * Copyright (C) 2013 Oliver Smith <oliver@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

/* Kernel module implementing an IP set type: the hash:net type */

#include <linux/jhash.h>
#include <linux/module.h>
#include <linux/ip.h>
#include <linux/skbuff.h>
#include <linux/errno.h>
#include <linux/random.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/netlink.h>

#include <linux/netfilter.h>
#include <linux/netfilter/ipset/pfxlen.h>
#include <linux/netfilter/ipset/ip_set.h>
#include <linux/netfilter/ipset/ip_set_hash.h>

#define IPSET_TYPE_REV_MIN	0
/*				1	   Forceadd support added */
#define IPSET_TYPE_REV_MAX	2	/* skbinfo support added */

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Oliver Smith <oliver@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa>");
IP_SET_MODULE_DESC("hash:net,net", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
MODULE_ALIAS("ip_set_hash:net,net");

/* Type specific function prefix */
#define HTYPE		hash_netnet
#define IP_SET_HASH_WITH_NETS
#define IPSET_NET_COUNT 2

/* IPv4 variants */

/* Member elements  */
struct hash_netnet4_elem {
	union {
		__be32 ip[2];
		__be64 ipcmp;
	};
	u8 nomatch;
	u8 padding;
	union {
		u8 cidr[2];
		u16 ccmp;
	};
};

/* Common functions */

static inline bool
hash_netnet4_data_equal(const struct hash_netnet4_elem *ip1,
			const struct hash_netnet4_elem *ip2,
			u32 *multi)
{
	return ip1->ipcmp == ip2->ipcmp &&
	       ip1->ccmp == ip2->ccmp;
}

static inline int
hash_netnet4_do_data_match(const struct hash_netnet4_elem *elem)
{
	return elem->nomatch ? -ENOTEMPTY : 1;
}

static inline void
hash_netnet4_data_set_flags(struct hash_netnet4_elem *elem, u32 flags)
{
	elem->nomatch = (flags >> 16) & IPSET_FLAG_NOMATCH;
}

static inline void
hash_netnet4_data_reset_flags(struct hash_netnet4_elem *elem, u8 *flags)
{
	swap(*flags, elem->nomatch);
}

static inline void
hash_netnet4_data_reset_elem(struct hash_netnet4_elem *elem,
			     struct hash_netnet4_elem *orig)
{
	elem->ip[1] = orig->ip[1];
}

static inline void
hash_netnet4_data_netmask(struct hash_netnet4_elem *elem, u8 cidr, bool inner)
{
	if (inner) {
		elem->ip[1] &= ip_set_netmask(cidr);
		elem->cidr[1] = cidr;
	} else {
		elem->ip[0] &= ip_set_netmask(cidr);
		elem->cidr[0] = cidr;
	}
}

static bool
hash_netnet4_data_list(struct sk_buff *skb,
		       const struct hash_netnet4_elem *data)
{
	u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;

	if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip[0]) ||
	    nla_put_ipaddr4(skb, IPSET_ATTR_IP2, data->ip[1]) ||
	    nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr[0]) ||
	    nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr[1]) ||
	    (flags &&
	     nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
		goto nla_put_failure;
	return false;

nla_put_failure:
	return true;
}

static inline void
hash_netnet4_data_next(struct hash_netnet4_elem *next,
		       const struct hash_netnet4_elem *d)
{
	next->ipcmp = d->ipcmp;
}

#define MTYPE		hash_netnet4
#define HOST_MASK	32
#include "ip_set_hash_gen.h"

static void
hash_netnet4_init(struct hash_netnet4_elem *e)
{
	e->cidr[0] = HOST_MASK;
	e->cidr[1] = HOST_MASK;
}

static int
hash_netnet4_kadt(struct ip_set *set, const struct sk_buff *skb,
		  const struct xt_action_param *par,
		  enum ipset_adt adt, struct ip_set_adt_opt *opt)
{
	const struct hash_netnet *h = set->data;
	ipset_adtfn adtfn = set->variant->adt[adt];
	struct hash_netnet4_elem e = { };
	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);

	e.cidr[0] = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK);
	e.cidr[1] = INIT_CIDR(h->nets[0].cidr[1], HOST_MASK);
	if (adt == IPSET_TEST)
		e.ccmp = (HOST_MASK << (sizeof(e.cidr[0]) * 8)) | HOST_MASK;

	ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip[0]);
	ip4addrptr(skb, opt->flags & IPSET_DIM_TWO_SRC, &e.ip[1]);
	e.ip[0] &= ip_set_netmask(e.cidr[0]);
	e.ip[1] &= ip_set_netmask(e.cidr[1]);

	return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
}

static int
hash_netnet4_uadt(struct ip_set *set, struct nlattr *tb[],
		  enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
{
	const struct hash_netnet *h = set->data;
	ipset_adtfn adtfn = set->variant->adt[adt];
	struct hash_netnet4_elem e = { };
	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
	u32 ip = 0, ip_to = 0, last;
	u32 ip2 = 0, ip2_from = 0, ip2_to = 0, last2;
	int ret;

	if (tb[IPSET_ATTR_LINENO])
		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);

	hash_netnet4_init(&e);
	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
		return -IPSET_ERR_PROTOCOL;

	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
	if (ret)
		return ret;

	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2], &ip2_from);
	if (ret)
		return ret;

	ret = ip_set_get_extensions(set, tb, &ext);
	if (ret)
		return ret;

	if (tb[IPSET_ATTR_CIDR]) {
		e.cidr[0] = nla_get_u8(tb[IPSET_ATTR_CIDR]);
		if (!e.cidr[0] || e.cidr[0] > HOST_MASK)
			return -IPSET_ERR_INVALID_CIDR;
	}

	if (tb[IPSET_ATTR_CIDR2]) {
		e.cidr[1] = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
		if (!e.cidr[1] || e.cidr[1] > HOST_MASK)
			return -IPSET_ERR_INVALID_CIDR;
	}

	if (tb[IPSET_ATTR_CADT_FLAGS]) {
		u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);

		if (cadt_flags & IPSET_FLAG_NOMATCH)
			flags |= (IPSET_FLAG_NOMATCH << 16);
	}

	if (adt == IPSET_TEST || !(tb[IPSET_ATTR_IP_TO] ||
				   tb[IPSET_ATTR_IP2_TO])) {
		e.ip[0] = htonl(ip & ip_set_hostmask(e.cidr[0]));
		e.ip[1] = htonl(ip2_from & ip_set_hostmask(e.cidr[1]));
		ret = adtfn(set, &e, &ext, &ext, flags);
		return ip_set_enomatch(ret, flags, adt, set) ? -ret :
		       ip_set_eexist(ret, flags) ? 0 : ret;
	}

	ip_to = ip;
	if (tb[IPSET_ATTR_IP_TO]) {
		ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
		if (ret)
			return ret;
		if (ip_to < ip)
			swap(ip, ip_to);
		if (unlikely(ip + UINT_MAX == ip_to))
			return -IPSET_ERR_HASH_RANGE;
	} else {
		ip_set_mask_from_to(ip, ip_to, e.cidr[0]);
	}

	ip2_to = ip2_from;
	if (tb[IPSET_ATTR_IP2_TO]) {
		ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2_TO], &ip2_to);
		if (ret)
			return ret;
		if (ip2_to < ip2_from)
			swap(ip2_from, ip2_to);
		if (unlikely(ip2_from + UINT_MAX == ip2_to))
			return -IPSET_ERR_HASH_RANGE;
	} else {
		ip_set_mask_from_to(ip2_from, ip2_to, e.cidr[1]);
	}

	if (retried)
		ip = ntohl(h->next.ip[0]);

	while (!after(ip, ip_to)) {
		e.ip[0] = htonl(ip);
		last = ip_set_range_to_cidr(ip, ip_to, &e.cidr[0]);
		ip2 = (retried &&
		       ip == ntohl(h->next.ip[0])) ? ntohl(h->next.ip[1])
						   : ip2_from;
		while (!after(ip2, ip2_to)) {
			e.ip[1] = htonl(ip2);
			last2 = ip_set_range_to_cidr(ip2, ip2_to, &e.cidr[1]);
			ret = adtfn(set, &e, &ext, &ext, flags);
			if (ret && !ip_set_eexist(ret, flags))
				return ret;

			ret = 0;
			ip2 = last2 + 1;
		}
		ip = last + 1;
	}
	return ret;
}

/* IPv6 variants */

struct hash_netnet6_elem {
	union nf_inet_addr ip[2];
	u8 nomatch;
	u8 padding;
	union {
		u8 cidr[2];
		u16 ccmp;
	};
};

/* Common functions */

static inline bool
hash_netnet6_data_equal(const struct hash_netnet6_elem *ip1,
			const struct hash_netnet6_elem *ip2,
			u32 *multi)
{
	return ipv6_addr_equal(&ip1->ip[0].in6, &ip2->ip[0].in6) &&
	       ipv6_addr_equal(&ip1->ip[1].in6, &ip2->ip[1].in6) &&
	       ip1->ccmp == ip2->ccmp;
}

static inline int
hash_netnet6_do_data_match(const struct hash_netnet6_elem *elem)
{
	return elem->nomatch ? -ENOTEMPTY : 1;
}

static inline void
hash_netnet6_data_set_flags(struct hash_netnet6_elem *elem, u32 flags)
{
	elem->nomatch = (flags >> 16) & IPSET_FLAG_NOMATCH;
}

static inline void
hash_netnet6_data_reset_flags(struct hash_netnet6_elem *elem, u8 *flags)
{
	swap(*flags, elem->nomatch);
}

static inline void
hash_netnet6_data_reset_elem(struct hash_netnet6_elem *elem,
			     struct hash_netnet6_elem *orig)
{
	elem->ip[1] = orig->ip[1];
}

static inline void
hash_netnet6_data_netmask(struct hash_netnet6_elem *elem, u8 cidr, bool inner)
{
	if (inner) {
		ip6_netmask(&elem->ip[1], cidr);
		elem->cidr[1] = cidr;
	} else {
		ip6_netmask(&elem->ip[0], cidr);
		elem->cidr[0] = cidr;
	}
}

static bool
hash_netnet6_data_list(struct sk_buff *skb,
		       const struct hash_netnet6_elem *data)
{
	u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;

	if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip[0].in6) ||
	    nla_put_ipaddr6(skb, IPSET_ATTR_IP2, &data->ip[1].in6) ||
	    nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr[0]) ||
	    nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr[1]) ||
	    (flags &&
	     nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
		goto nla_put_failure;
	return false;

nla_put_failure:
	return true;
}

static inline void
hash_netnet6_data_next(struct hash_netnet4_elem *next,
		       const struct hash_netnet6_elem *d)
{
}

#undef MTYPE
#undef HOST_MASK

#define MTYPE		hash_netnet6
#define HOST_MASK	128
#define IP_SET_EMIT_CREATE
#include "ip_set_hash_gen.h"

static void
hash_netnet6_init(struct hash_netnet6_elem *e)
{
	e->cidr[0] = HOST_MASK;
	e->cidr[1] = HOST_MASK;
}

static int
hash_netnet6_kadt(struct ip_set *set, const struct sk_buff *skb,
		  const struct xt_action_param *par,
		  enum ipset_adt adt, struct ip_set_adt_opt *opt)
{
	const struct hash_netnet *h = set->data;
	ipset_adtfn adtfn = set->variant->adt[adt];
	struct hash_netnet6_elem e = { };
	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);

	e.cidr[0] = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK);
	e.cidr[1] = INIT_CIDR(h->nets[0].cidr[1], HOST_MASK);
	if (adt == IPSET_TEST)
		e.ccmp = (HOST_MASK << (sizeof(u8) * 8)) | HOST_MASK;

	ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip[0].in6);
	ip6addrptr(skb, opt->flags & IPSET_DIM_TWO_SRC, &e.ip[1].in6);
	ip6_netmask(&e.ip[0], e.cidr[0]);
	ip6_netmask(&e.ip[1], e.cidr[1]);

	return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
}

static int
hash_netnet6_uadt(struct ip_set *set, struct nlattr *tb[],
		  enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
{
	ipset_adtfn adtfn = set->variant->adt[adt];
	struct hash_netnet6_elem e = { };
	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
	int ret;

	if (tb[IPSET_ATTR_LINENO])
		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);

	hash_netnet6_init(&e);
	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
		return -IPSET_ERR_PROTOCOL;
	if (unlikely(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_IP2_TO]))
		return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;

	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip[0]);
	if (ret)
		return ret;

	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP2], &e.ip[1]);
	if (ret)
		return ret;

	ret = ip_set_get_extensions(set, tb, &ext);
	if (ret)
		return ret;

	if (tb[IPSET_ATTR_CIDR]) {
		e.cidr[0] = nla_get_u8(tb[IPSET_ATTR_CIDR]);
		if (!e.cidr[0] || e.cidr[0] > HOST_MASK)
			return -IPSET_ERR_INVALID_CIDR;
	}

	if (tb[IPSET_ATTR_CIDR2]) {
		e.cidr[1] = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
		if (!e.cidr[1] || e.cidr[1] > HOST_MASK)
			return -IPSET_ERR_INVALID_CIDR;
	}

	ip6_netmask(&e.ip[0], e.cidr[0]);
	ip6_netmask(&e.ip[1], e.cidr[1]);

	if (tb[IPSET_ATTR_CADT_FLAGS]) {
		u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);

		if (cadt_flags & IPSET_FLAG_NOMATCH)
			flags |= (IPSET_FLAG_NOMATCH << 16);
	}

	ret = adtfn(set, &e, &ext, &ext, flags);

	return ip_set_enomatch(ret, flags, adt, set) ? -ret :
	       ip_set_eexist(ret, flags) ? 0 : ret;
}

static struct ip_set_type hash_netnet_type __read_mostly = {
	.name		= "hash:net,net",
	.protocol	= IPSET_PROTOCOL,
	.features	= IPSET_TYPE_IP | IPSET_TYPE_IP2 | IPSET_TYPE_NOMATCH,
	.dimension	= IPSET_DIM_TWO,
	.family		= NFPROTO_UNSPEC,
	.revision_min	= IPSET_TYPE_REV_MIN,
	.revision_max	= IPSET_TYPE_REV_MAX,
	.create		= hash_netnet_create,
	.create_policy	= {
		[IPSET_ATTR_HASHSIZE]	= { .type = NLA_U32 },
		[IPSET_ATTR_MAXELEM]	= { .type = NLA_U32 },
		[IPSET_ATTR_PROBES]	= { .type = NLA_U8 },
		[IPSET_ATTR_RESIZE]	= { .type = NLA_U8  },
		[IPSET_ATTR_TIMEOUT]	= { .type = NLA_U32 },
		[IPSET_ATTR_CADT_FLAGS]	= { .type = NLA_U32 },
	},
	.adt_policy	= {
		[IPSET_ATTR_IP]		= { .type = NLA_NESTED },
		[IPSET_ATTR_IP_TO]	= { .type = NLA_NESTED },
		[IPSET_ATTR_IP2]	= { .type = NLA_NESTED },
		[IPSET_ATTR_IP2_TO]	= { .type = NLA_NESTED },
		[IPSET_ATTR_CIDR]	= { .type = NLA_U8 },
		[IPSET_ATTR_CIDR2]	= { .type = NLA_U8 },
		[IPSET_ATTR_TIMEOUT]	= { .type = NLA_U32 },
		[IPSET_ATTR_CADT_FLAGS]	= { .type = NLA_U32 },
		[IPSET_ATTR_BYTES]	= { .type = NLA_U64 },
		[IPSET_ATTR_PACKETS]	= { .type = NLA_U64 },
		[IPSET_ATTR_COMMENT]	= { .type = NLA_NUL_STRING,
					    .len  = IPSET_MAX_COMMENT_SIZE },
		[IPSET_ATTR_SKBMARK]	= { .type = NLA_U64 },
		[IPSET_ATTR_SKBPRIO]	= { .type = NLA_U32 },
		[IPSET_ATTR_SKBQUEUE]	= { .type = NLA_U16 },
	},
	.me		= THIS_MODULE,
};

static int __init
hash_netnet_init(void)
{
	return ip_set_type_register(&hash_netnet_type);
}

static void __exit
hash_netnet_fini(void)
{
	rcu_barrier();
	ip_set_type_unregister(&hash_netnet_type);
}

module_init(hash_netnet_init);
module_exit(hash_netnet_fini);
Commit	Line	Data
ea53ac5b OS	1	/* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
	2	* Copyright (C) 2013 Oliver Smith <oliver@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa>
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*/
	8
	9	/* Kernel module implementing an IP set type: the hash:net type */
	10
	11	#include <linux/jhash.h>
	12	#include <linux/module.h>
	13	#include <linux/ip.h>
	14	#include <linux/skbuff.h>
	15	#include <linux/errno.h>
	16	#include <linux/random.h>
	17	#include <net/ip.h>
	18	#include <net/ipv6.h>
	19	#include <net/netlink.h>
	20
	21	#include <linux/netfilter.h>
	22	#include <linux/netfilter/ipset/pfxlen.h>
	23	#include <linux/netfilter/ipset/ip_set.h>
	24	#include <linux/netfilter/ipset/ip_set_hash.h>
	25
	26	#define IPSET_TYPE_REV_MIN 0
af331419 AD	27	/* 1 Forceadd support added */
af331419 AD	28	#define IPSET_TYPE_REV_MAX 2 /* skbinfo support added */
ea53ac5b OS	29
	30	MODULE_LICENSE("GPL");
	31	MODULE_AUTHOR("Oliver Smith <oliver@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa>");
	32	IP_SET_MODULE_DESC("hash:net,net", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
	33	MODULE_ALIAS("ip_set_hash:net,net");
	34
	35	/* Type specific function prefix */
	36	#define HTYPE hash_netnet
	37	#define IP_SET_HASH_WITH_NETS
	38	#define IPSET_NET_COUNT 2
	39
	40	/* IPv4 variants */
	41
	42	/* Member elements */
	43	struct hash_netnet4_elem {
	44	union {
	45	__be32 ip[2];
	46	__be64 ipcmp;
	47	};
	48	u8 nomatch;
cac37639	49	u8 padding;
ea53ac5b OS	50	union {
	51	u8 cidr[2];
	52	u16 ccmp;
	53	};
	54	};
	55
	56	/* Common functions */
	57
	58	static inline bool
	59	hash_netnet4_data_equal(const struct hash_netnet4_elem *ip1,
ca0f6a5c JK	60	const struct hash_netnet4_elem *ip2,
ca0f6a5c JK	61	u32 *multi)
ea53ac5b OS	62	{
ea53ac5b OS	63	return ip1->ipcmp == ip2->ipcmp &&
b49faea7	64	ip1->ccmp == ip2->ccmp;
ea53ac5b OS	65	}
	66
	67	static inline int
	68	hash_netnet4_do_data_match(const struct hash_netnet4_elem *elem)
	69	{
	70	return elem->nomatch ? -ENOTEMPTY : 1;
	71	}
	72
	73	static inline void
	74	hash_netnet4_data_set_flags(struct hash_netnet4_elem *elem, u32 flags)
	75	{
	76	elem->nomatch = (flags >> 16) & IPSET_FLAG_NOMATCH;
	77	}
	78
	79	static inline void
	80	hash_netnet4_data_reset_flags(struct hash_netnet4_elem elem, u8 flags)
	81	{
	82	swap(*flags, elem->nomatch);
	83	}
	84
	85	static inline void
	86	hash_netnet4_data_reset_elem(struct hash_netnet4_elem *elem,
ca0f6a5c	87	struct hash_netnet4_elem *orig)
ea53ac5b OS	88	{
	89	elem->ip[1] = orig->ip[1];
	90	}
	91
	92	static inline void
	93	hash_netnet4_data_netmask(struct hash_netnet4_elem *elem, u8 cidr, bool inner)
	94	{
	95	if (inner) {
	96	elem->ip[1] &= ip_set_netmask(cidr);
	97	elem->cidr[1] = cidr;
	98	} else {
	99	elem->ip[0] &= ip_set_netmask(cidr);
	100	elem->cidr[0] = cidr;
	101	}
	102	}
	103
	104	static bool
	105	hash_netnet4_data_list(struct sk_buff *skb,
ca0f6a5c	106	const struct hash_netnet4_elem *data)
ea53ac5b OS	107	{
	108	u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
	109
	110	if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip[0]) \|\|
	111	nla_put_ipaddr4(skb, IPSET_ATTR_IP2, data->ip[1]) \|\|
	112	nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr[0]) \|\|
	113	nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr[1]) \|\|
	114	(flags &&
	115	nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
	116	goto nla_put_failure;
9562cf28	117	return false;
ea53ac5b OS	118
ea53ac5b OS	119	nla_put_failure:
9562cf28	120	return true;
ea53ac5b OS	121	}
	122
	123	static inline void
	124	hash_netnet4_data_next(struct hash_netnet4_elem *next,
ca0f6a5c	125	const struct hash_netnet4_elem *d)
ea53ac5b OS	126	{
	127	next->ipcmp = d->ipcmp;
	128	}
	129
	130	#define MTYPE hash_netnet4
ea53ac5b OS	131	#define HOST_MASK 32
	132	#include "ip_set_hash_gen.h"
	133
96be5f28 ER	134	static void
	135	hash_netnet4_init(struct hash_netnet4_elem *e)
	136	{
	137	e->cidr[0] = HOST_MASK;
	138	e->cidr[1] = HOST_MASK;
	139	}
	140
ea53ac5b OS	141	static int
ea53ac5b OS	142	hash_netnet4_kadt(struct ip_set set, const struct sk_buff skb,
ca0f6a5c JK	143	const struct xt_action_param *par,
ca0f6a5c JK	144	enum ipset_adt adt, struct ip_set_adt_opt *opt)
ea53ac5b OS	145	{
	146	const struct hash_netnet *h = set->data;
	147	ipset_adtfn adtfn = set->variant->adt[adt];
1a869205	148	struct hash_netnet4_elem e = { };
ea53ac5b OS	149	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
ea53ac5b OS	150
f690cbae JK	151	e.cidr[0] = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK);
f690cbae JK	152	e.cidr[1] = INIT_CIDR(h->nets[0].cidr[1], HOST_MASK);
ea53ac5b OS	153	if (adt == IPSET_TEST)
	154	e.ccmp = (HOST_MASK << (sizeof(e.cidr[0]) * 8)) \| HOST_MASK;
	155
	156	ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip[0]);
	157	ip4addrptr(skb, opt->flags & IPSET_DIM_TWO_SRC, &e.ip[1]);
	158	e.ip[0] &= ip_set_netmask(e.cidr[0]);
	159	e.ip[1] &= ip_set_netmask(e.cidr[1]);
	160
	161	return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
	162	}
	163
	164	static int
	165	hash_netnet4_uadt(struct ip_set set, struct nlattr tb[],
ca0f6a5c	166	enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
ea53ac5b OS	167	{
	168	const struct hash_netnet *h = set->data;
	169	ipset_adtfn adtfn = set->variant->adt[adt];
96be5f28	170	struct hash_netnet4_elem e = { };
ea53ac5b OS	171	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
	172	u32 ip = 0, ip_to = 0, last;
	173	u32 ip2 = 0, ip2_from = 0, ip2_to = 0, last2;
ea53ac5b OS	174	int ret;
ea53ac5b OS	175
a212e08e SP	176	if (tb[IPSET_ATTR_LINENO])
	177	*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
	178
96be5f28	179	hash_netnet4_init(&e);
ea53ac5b	180	if (unlikely(!tb[IPSET_ATTR_IP] \|\| !tb[IPSET_ATTR_IP2] \|\|
7dd37bc8	181	!ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
ea53ac5b OS	182	return -IPSET_ERR_PROTOCOL;
ea53ac5b OS	183
8e55d2e5 SP	184	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
	185	if (ret)
	186	return ret;
	187
	188	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2], &ip2_from);
	189	if (ret)
	190	return ret;
	191
	192	ret = ip_set_get_extensions(set, tb, &ext);
ea53ac5b OS	193	if (ret)
	194	return ret;
	195
	196	if (tb[IPSET_ATTR_CIDR]) {
aff22758 SP	197	e.cidr[0] = nla_get_u8(tb[IPSET_ATTR_CIDR]);
aff22758 SP	198	if (!e.cidr[0] \|\| e.cidr[0] > HOST_MASK)
ea53ac5b	199	return -IPSET_ERR_INVALID_CIDR;
ea53ac5b OS	200	}
	201
	202	if (tb[IPSET_ATTR_CIDR2]) {
aff22758 SP	203	e.cidr[1] = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
aff22758 SP	204	if (!e.cidr[1] \|\| e.cidr[1] > HOST_MASK)
ea53ac5b	205	return -IPSET_ERR_INVALID_CIDR;
ea53ac5b OS	206	}
	207
	208	if (tb[IPSET_ATTR_CADT_FLAGS]) {
	209	u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
ca0f6a5c	210
ea53ac5b OS	211	if (cadt_flags & IPSET_FLAG_NOMATCH)
	212	flags \|= (IPSET_FLAG_NOMATCH << 16);
	213	}
	214
6e41ee68	215	if (adt == IPSET_TEST \|\| !(tb[IPSET_ATTR_IP_TO] \|\|
ea53ac5b OS	216	tb[IPSET_ATTR_IP2_TO])) {
	217	e.ip[0] = htonl(ip & ip_set_hostmask(e.cidr[0]));
	218	e.ip[1] = htonl(ip2_from & ip_set_hostmask(e.cidr[1]));
	219	ret = adtfn(set, &e, &ext, &ext, flags);
	220	return ip_set_enomatch(ret, flags, adt, set) ? -ret :
	221	ip_set_eexist(ret, flags) ? 0 : ret;
	222	}
	223
	224	ip_to = ip;
	225	if (tb[IPSET_ATTR_IP_TO]) {
	226	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
	227	if (ret)
	228	return ret;
	229	if (ip_to < ip)
	230	swap(ip, ip_to);
6e41ee68	231	if (unlikely(ip + UINT_MAX == ip_to))
ea53ac5b	232	return -IPSET_ERR_HASH_RANGE;
ca0f6a5c	233	} else {
6e41ee68	234	ip_set_mask_from_to(ip, ip_to, e.cidr[0]);
ca0f6a5c	235	}
ea53ac5b OS	236
	237	ip2_to = ip2_from;
	238	if (tb[IPSET_ATTR_IP2_TO]) {
	239	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2_TO], &ip2_to);
	240	if (ret)
	241	return ret;
	242	if (ip2_to < ip2_from)
	243	swap(ip2_from, ip2_to);
6e41ee68	244	if (unlikely(ip2_from + UINT_MAX == ip2_to))
ea53ac5b	245	return -IPSET_ERR_HASH_RANGE;
ca0f6a5c	246	} else {
6e41ee68	247	ip_set_mask_from_to(ip2_from, ip2_to, e.cidr[1]);
ca0f6a5c	248	}
ea53ac5b OS	249
	250	if (retried)
	251	ip = ntohl(h->next.ip[0]);
	252
	253	while (!after(ip, ip_to)) {
	254	e.ip[0] = htonl(ip);
aff22758	255	last = ip_set_range_to_cidr(ip, ip_to, &e.cidr[0]);
ea53ac5b OS	256	ip2 = (retried &&
	257	ip == ntohl(h->next.ip[0])) ? ntohl(h->next.ip[1])
	258	: ip2_from;
	259	while (!after(ip2, ip2_to)) {
	260	e.ip[1] = htonl(ip2);
aff22758	261	last2 = ip_set_range_to_cidr(ip2, ip2_to, &e.cidr[1]);
ea53ac5b OS	262	ret = adtfn(set, &e, &ext, &ext, flags);
	263	if (ret && !ip_set_eexist(ret, flags))
	264	return ret;
ca0f6a5c JK	265
ca0f6a5c JK	266	ret = 0;
ea53ac5b OS	267	ip2 = last2 + 1;
	268	}
	269	ip = last + 1;
	270	}
	271	return ret;
	272	}
	273
	274	/* IPv6 variants */
	275
	276	struct hash_netnet6_elem {
	277	union nf_inet_addr ip[2];
	278	u8 nomatch;
cac37639	279	u8 padding;
ea53ac5b OS	280	union {
	281	u8 cidr[2];
	282	u16 ccmp;
	283	};
	284	};
	285
	286	/* Common functions */
	287
	288	static inline bool
	289	hash_netnet6_data_equal(const struct hash_netnet6_elem *ip1,
ca0f6a5c JK	290	const struct hash_netnet6_elem *ip2,
ca0f6a5c JK	291	u32 *multi)
ea53ac5b OS	292	{
	293	return ipv6_addr_equal(&ip1->ip[0].in6, &ip2->ip[0].in6) &&
	294	ipv6_addr_equal(&ip1->ip[1].in6, &ip2->ip[1].in6) &&
	295	ip1->ccmp == ip2->ccmp;
	296	}
	297
	298	static inline int
	299	hash_netnet6_do_data_match(const struct hash_netnet6_elem *elem)
	300	{
	301	return elem->nomatch ? -ENOTEMPTY : 1;
	302	}
	303
	304	static inline void
	305	hash_netnet6_data_set_flags(struct hash_netnet6_elem *elem, u32 flags)
	306	{
	307	elem->nomatch = (flags >> 16) & IPSET_FLAG_NOMATCH;
	308	}
	309
	310	static inline void
	311	hash_netnet6_data_reset_flags(struct hash_netnet6_elem elem, u8 flags)
	312	{
	313	swap(*flags, elem->nomatch);
	314	}
	315
	316	static inline void
	317	hash_netnet6_data_reset_elem(struct hash_netnet6_elem *elem,
ca0f6a5c	318	struct hash_netnet6_elem *orig)
ea53ac5b OS	319	{
	320	elem->ip[1] = orig->ip[1];
	321	}
	322
	323	static inline void
	324	hash_netnet6_data_netmask(struct hash_netnet6_elem *elem, u8 cidr, bool inner)
	325	{
	326	if (inner) {
	327	ip6_netmask(&elem->ip[1], cidr);
	328	elem->cidr[1] = cidr;
	329	} else {
	330	ip6_netmask(&elem->ip[0], cidr);
	331	elem->cidr[0] = cidr;
	332	}
	333	}
	334
	335	static bool
	336	hash_netnet6_data_list(struct sk_buff *skb,
ca0f6a5c	337	const struct hash_netnet6_elem *data)
ea53ac5b OS	338	{
	339	u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
	340
	341	if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip[0].in6) \|\|
	342	nla_put_ipaddr6(skb, IPSET_ATTR_IP2, &data->ip[1].in6) \|\|
	343	nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr[0]) \|\|
	344	nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr[1]) \|\|
	345	(flags &&
	346	nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
	347	goto nla_put_failure;
9562cf28	348	return false;
ea53ac5b OS	349
ea53ac5b OS	350	nla_put_failure:
9562cf28	351	return true;
ea53ac5b OS	352	}
	353
	354	static inline void
	355	hash_netnet6_data_next(struct hash_netnet4_elem *next,
ca0f6a5c	356	const struct hash_netnet6_elem *d)
ea53ac5b OS	357	{
	358	}
	359
	360	#undef MTYPE
ea53ac5b OS	361	#undef HOST_MASK
	362
	363	#define MTYPE hash_netnet6
ea53ac5b OS	364	#define HOST_MASK 128
	365	#define IP_SET_EMIT_CREATE
	366	#include "ip_set_hash_gen.h"
	367
96be5f28 ER	368	static void
	369	hash_netnet6_init(struct hash_netnet6_elem *e)
	370	{
	371	e->cidr[0] = HOST_MASK;
	372	e->cidr[1] = HOST_MASK;
	373	}
	374
ea53ac5b OS	375	static int
ea53ac5b OS	376	hash_netnet6_kadt(struct ip_set set, const struct sk_buff skb,
ca0f6a5c JK	377	const struct xt_action_param *par,
ca0f6a5c JK	378	enum ipset_adt adt, struct ip_set_adt_opt *opt)
ea53ac5b OS	379	{
	380	const struct hash_netnet *h = set->data;
	381	ipset_adtfn adtfn = set->variant->adt[adt];
1a869205	382	struct hash_netnet6_elem e = { };
ea53ac5b OS	383	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
ea53ac5b OS	384
f690cbae JK	385	e.cidr[0] = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK);
f690cbae JK	386	e.cidr[1] = INIT_CIDR(h->nets[0].cidr[1], HOST_MASK);
ea53ac5b	387	if (adt == IPSET_TEST)
ca0f6a5c	388	e.ccmp = (HOST_MASK << (sizeof(u8) * 8)) \| HOST_MASK;
ea53ac5b OS	389
	390	ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip[0].in6);
	391	ip6addrptr(skb, opt->flags & IPSET_DIM_TWO_SRC, &e.ip[1].in6);
	392	ip6_netmask(&e.ip[0], e.cidr[0]);
	393	ip6_netmask(&e.ip[1], e.cidr[1]);
	394
	395	return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
	396	}
	397
	398	static int
	399	hash_netnet6_uadt(struct ip_set set, struct nlattr tb[],
ca0f6a5c	400	enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
ea53ac5b OS	401	{
ea53ac5b OS	402	ipset_adtfn adtfn = set->variant->adt[adt];
96be5f28	403	struct hash_netnet6_elem e = { };
ea53ac5b OS	404	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
	405	int ret;
	406
a212e08e SP	407	if (tb[IPSET_ATTR_LINENO])
	408	*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
	409
96be5f28	410	hash_netnet6_init(&e);
ea53ac5b	411	if (unlikely(!tb[IPSET_ATTR_IP] \|\| !tb[IPSET_ATTR_IP2] \|\|
7dd37bc8	412	!ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
ea53ac5b OS	413	return -IPSET_ERR_PROTOCOL;
	414	if (unlikely(tb[IPSET_ATTR_IP_TO] \|\| tb[IPSET_ATTR_IP2_TO]))
	415	return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
	416
8e55d2e5 SP	417	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip[0]);
	418	if (ret)
	419	return ret;
	420
	421	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP2], &e.ip[1]);
	422	if (ret)
	423	return ret;
	424
	425	ret = ip_set_get_extensions(set, tb, &ext);
ea53ac5b OS	426	if (ret)
	427	return ret;
	428
aff22758	429	if (tb[IPSET_ATTR_CIDR]) {
ea53ac5b	430	e.cidr[0] = nla_get_u8(tb[IPSET_ATTR_CIDR]);
aff22758 SP	431	if (!e.cidr[0] \|\| e.cidr[0] > HOST_MASK)
	432	return -IPSET_ERR_INVALID_CIDR;
	433	}
ea53ac5b	434
aff22758	435	if (tb[IPSET_ATTR_CIDR2]) {
ea53ac5b	436	e.cidr[1] = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
aff22758 SP	437	if (!e.cidr[1] \|\| e.cidr[1] > HOST_MASK)
	438	return -IPSET_ERR_INVALID_CIDR;
	439	}
ea53ac5b OS	440
	441	ip6_netmask(&e.ip[0], e.cidr[0]);
	442	ip6_netmask(&e.ip[1], e.cidr[1]);
	443
	444	if (tb[IPSET_ATTR_CADT_FLAGS]) {
	445	u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
ca0f6a5c	446
ea53ac5b OS	447	if (cadt_flags & IPSET_FLAG_NOMATCH)
	448	flags \|= (IPSET_FLAG_NOMATCH << 16);
	449	}
	450
	451	ret = adtfn(set, &e, &ext, &ext, flags);
	452
	453	return ip_set_enomatch(ret, flags, adt, set) ? -ret :
	454	ip_set_eexist(ret, flags) ? 0 : ret;
	455	}
	456
	457	static struct ip_set_type hash_netnet_type __read_mostly = {
	458	.name = "hash:net,net",
	459	.protocol = IPSET_PROTOCOL,
	460	.features = IPSET_TYPE_IP \| IPSET_TYPE_IP2 \| IPSET_TYPE_NOMATCH,
	461	.dimension = IPSET_DIM_TWO,
	462	.family = NFPROTO_UNSPEC,
	463	.revision_min = IPSET_TYPE_REV_MIN,
	464	.revision_max = IPSET_TYPE_REV_MAX,
	465	.create = hash_netnet_create,
	466	.create_policy = {
	467	[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
	468	[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
	469	[IPSET_ATTR_PROBES] = { .type = NLA_U8 },
	470	[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
	471	[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
	472	[IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
	473	},
	474	.adt_policy = {
	475	[IPSET_ATTR_IP] = { .type = NLA_NESTED },
	476	[IPSET_ATTR_IP_TO] = { .type = NLA_NESTED },
	477	[IPSET_ATTR_IP2] = { .type = NLA_NESTED },
	478	[IPSET_ATTR_IP2_TO] = { .type = NLA_NESTED },
	479	[IPSET_ATTR_CIDR] = { .type = NLA_U8 },
	480	[IPSET_ATTR_CIDR2] = { .type = NLA_U8 },
	481	[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
	482	[IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
	483	[IPSET_ATTR_BYTES] = { .type = NLA_U64 },
	484	[IPSET_ATTR_PACKETS] = { .type = NLA_U64 },
03726186 SP	485	[IPSET_ATTR_COMMENT] = { .type = NLA_NUL_STRING,
03726186 SP	486	.len = IPSET_MAX_COMMENT_SIZE },
af331419 AD	487	[IPSET_ATTR_SKBMARK] = { .type = NLA_U64 },
	488	[IPSET_ATTR_SKBPRIO] = { .type = NLA_U32 },
	489	[IPSET_ATTR_SKBQUEUE] = { .type = NLA_U16 },
ea53ac5b OS	490	},
	491	.me = THIS_MODULE,
	492	};
	493
	494	static int __init
	495	hash_netnet_init(void)
	496	{
	497	return ip_set_type_register(&hash_netnet_type);
	498	}
	499
	500	static void __exit
	501	hash_netnet_fini(void)
	502	{
18f84d41	503	rcu_barrier();
ea53ac5b OS	504	ip_set_type_unregister(&hash_netnet_type);
	505	}
	506
	507	module_init(hash_netnet_init);
	508	module_exit(hash_netnet_fini);