[thirdparty/kernel/stable.git] / net / netfilter / ipset / ip_set_hash_net.c

// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
 */

/* 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    Range as input support for IPv4 added */
/*				2    nomatch flag support added */
/*				3    Counters support added */
/*				4    Comments support added */
/*				5    Forceadd support added */
#define IPSET_TYPE_REV_MAX	6 /* skbinfo mapping support added */

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
IP_SET_MODULE_DESC("hash:net", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
MODULE_ALIAS("ip_set_hash:net");

/* Type specific function prefix */
#define HTYPE		hash_net
#define IP_SET_HASH_WITH_NETS

/* IPv4 variant */

/* Member elements  */
struct hash_net4_elem {
	__be32 ip;
	u16 padding0;
	u8 nomatch;
	u8 cidr;
};

/* Common functions */

static inline bool
hash_net4_data_equal(const struct hash_net4_elem *ip1,
		     const struct hash_net4_elem *ip2,
		     u32 *multi)
{
	return ip1->ip == ip2->ip &&
	       ip1->cidr == ip2->cidr;
}

static inline int
hash_net4_do_data_match(const struct hash_net4_elem *elem)
{
	return elem->nomatch ? -ENOTEMPTY : 1;
}

static inline void
hash_net4_data_set_flags(struct hash_net4_elem *elem, u32 flags)
{
	elem->nomatch = (flags >> 16) & IPSET_FLAG_NOMATCH;
}

static inline void
hash_net4_data_reset_flags(struct hash_net4_elem *elem, u8 *flags)
{
	swap(*flags, elem->nomatch);
}

static inline void
hash_net4_data_netmask(struct hash_net4_elem *elem, u8 cidr)
{
	elem->ip &= ip_set_netmask(cidr);
	elem->cidr = cidr;
}

static bool
hash_net4_data_list(struct sk_buff *skb, const struct hash_net4_elem *data)
{
	u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;

	if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip) ||
	    nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr) ||
	    (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_net4_data_next(struct hash_net4_elem *next,
		    const struct hash_net4_elem *d)
{
	next->ip = d->ip;
}

#define MTYPE		hash_net4
#define HOST_MASK	32
#include "ip_set_hash_gen.h"

static int
hash_net4_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_net4 *h = set->data;
	ipset_adtfn adtfn = set->variant->adt[adt];
	struct hash_net4_elem e = {
		.cidr = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK),
	};
	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);

	if (e.cidr == 0)
		return -EINVAL;
	if (adt == IPSET_TEST)
		e.cidr = HOST_MASK;

	ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip);
	e.ip &= ip_set_netmask(e.cidr);

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

static int
hash_net4_uadt(struct ip_set *set, struct nlattr *tb[],
	       enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
{
	const struct hash_net4 *h = set->data;
	ipset_adtfn adtfn = set->variant->adt[adt];
	struct hash_net4_elem e = { .cidr = HOST_MASK };
	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
	u32 ip = 0, ip_to = 0;
	int ret;

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

	if (unlikely(!tb[IPSET_ATTR_IP] ||
		     !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_extensions(set, tb, &ext);
	if (ret)
		return ret;

	if (tb[IPSET_ATTR_CIDR]) {
		e.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
		if (!e.cidr || e.cidr > 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]) {
		e.ip = htonl(ip & ip_set_hostmask(e.cidr));
		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 (ip + UINT_MAX == ip_to)
			return -IPSET_ERR_HASH_RANGE;
	}
	if (retried)
		ip = ntohl(h->next.ip);
	do {
		e.ip = htonl(ip);
		ip = ip_set_range_to_cidr(ip, ip_to, &e.cidr);
		ret = adtfn(set, &e, &ext, &ext, flags);
		if (ret && !ip_set_eexist(ret, flags))
			return ret;

		ret = 0;
	} while (ip++ < ip_to);
	return ret;
}

/* IPv6 variant */

struct hash_net6_elem {
	union nf_inet_addr ip;
	u16 padding0;
	u8 nomatch;
	u8 cidr;
};

/* Common functions */

static inline bool
hash_net6_data_equal(const struct hash_net6_elem *ip1,
		     const struct hash_net6_elem *ip2,
		     u32 *multi)
{
	return ipv6_addr_equal(&ip1->ip.in6, &ip2->ip.in6) &&
	       ip1->cidr == ip2->cidr;
}

static inline int
hash_net6_do_data_match(const struct hash_net6_elem *elem)
{
	return elem->nomatch ? -ENOTEMPTY : 1;
}

static inline void
hash_net6_data_set_flags(struct hash_net6_elem *elem, u32 flags)
{
	elem->nomatch = (flags >> 16) & IPSET_FLAG_NOMATCH;
}

static inline void
hash_net6_data_reset_flags(struct hash_net6_elem *elem, u8 *flags)
{
	swap(*flags, elem->nomatch);
}

static inline void
hash_net6_data_netmask(struct hash_net6_elem *elem, u8 cidr)
{
	ip6_netmask(&elem->ip, cidr);
	elem->cidr = cidr;
}

static bool
hash_net6_data_list(struct sk_buff *skb, const struct hash_net6_elem *data)
{
	u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;

	if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip.in6) ||
	    nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr) ||
	    (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_net6_data_next(struct hash_net6_elem *next,
		    const struct hash_net6_elem *d)
{
}

#undef MTYPE
#undef HOST_MASK

#define MTYPE		hash_net6
#define HOST_MASK	128
#define IP_SET_EMIT_CREATE
#include "ip_set_hash_gen.h"

static int
hash_net6_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_net6 *h = set->data;
	ipset_adtfn adtfn = set->variant->adt[adt];
	struct hash_net6_elem e = {
		.cidr = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK),
	};
	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);

	if (e.cidr == 0)
		return -EINVAL;
	if (adt == IPSET_TEST)
		e.cidr = HOST_MASK;

	ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip.in6);
	ip6_netmask(&e.ip, e.cidr);

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

static int
hash_net6_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_net6_elem e = { .cidr = HOST_MASK };
	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]);

	if (unlikely(!tb[IPSET_ATTR_IP] ||
		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
		return -IPSET_ERR_PROTOCOL;
	if (unlikely(tb[IPSET_ATTR_IP_TO]))
		return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;

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

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

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

	ip6_netmask(&e.ip, e.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);
	}

	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_net_type __read_mostly = {
	.name		= "hash:net",
	.protocol	= IPSET_PROTOCOL,
	.features	= IPSET_TYPE_IP | IPSET_TYPE_NOMATCH,
	.dimension	= IPSET_DIM_ONE,
	.family		= NFPROTO_UNSPEC,
	.revision_min	= IPSET_TYPE_REV_MIN,
	.revision_max	= IPSET_TYPE_REV_MAX,
	.create		= hash_net_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_CIDR]	= { .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_net_init(void)
{
	return ip_set_type_register(&hash_net_type);
}

static void __exit
hash_net_fini(void)
{
	rcu_barrier();
	ip_set_type_unregister(&hash_net_type);
}

module_init(hash_net_init);
module_exit(hash_net_fini);
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
5d50e1d8	2	/* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
b3837029 JK	3	*/
	4
	5	/* Kernel module implementing an IP set type: the hash:net type */
	6
	7	#include <linux/jhash.h>
	8	#include <linux/module.h>
	9	#include <linux/ip.h>
	10	#include <linux/skbuff.h>
	11	#include <linux/errno.h>
b3837029 JK	12	#include <linux/random.h>
	13	#include <net/ip.h>
	14	#include <net/ipv6.h>
	15	#include <net/netlink.h>
	16
	17	#include <linux/netfilter.h>
	18	#include <linux/netfilter/ipset/pfxlen.h>
	19	#include <linux/netfilter/ipset/ip_set.h>
b3837029 JK	20	#include <linux/netfilter/ipset/ip_set_hash.h>
b3837029 JK	21
35b8dcf8 JK	22	#define IPSET_TYPE_REV_MIN 0
	23	/* 1 Range as input support for IPv4 added */
	24	/* 2 nomatch flag support added */
fda75c6d	25	/* 3 Counters support added */
07cf8f5a	26	/* 4 Comments support added */
af331419 AD	27	/* 5 Forceadd support added */
af331419 AD	28	#define IPSET_TYPE_REV_MAX 6 /* skbinfo mapping support added */
10111a6e	29
b3837029 JK	30	MODULE_LICENSE("GPL");
b3837029 JK	31	MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
35b8dcf8	32	IP_SET_MODULE_DESC("hash:net", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
b3837029 JK	33	MODULE_ALIAS("ip_set_hash:net");
	34
	35	/* Type specific function prefix */
5d50e1d8 JK	36	#define HTYPE hash_net
5d50e1d8 JK	37	#define IP_SET_HASH_WITH_NETS
b3837029	38
03c8b234	39	/* IPv4 variant */
b3837029	40
5d50e1d8	41	/* Member elements */
b3837029 JK	42	struct hash_net4_elem {
	43	__be32 ip;
	44	u16 padding0;
2a7cef2a	45	u8 nomatch;
b3837029 JK	46	u8 cidr;
	47	};
	48
5d50e1d8 JK	49	/* Common functions */
5d50e1d8 JK	50
b3837029 JK	51	static inline bool
b3837029 JK	52	hash_net4_data_equal(const struct hash_net4_elem *ip1,
89dc79b7 JK	53	const struct hash_net4_elem *ip2,
89dc79b7 JK	54	u32 *multi)
b3837029	55	{
2a7cef2a JK	56	return ip1->ip == ip2->ip &&
2a7cef2a JK	57	ip1->cidr == ip2->cidr;
b3837029 JK	58	}
b3837029 JK	59
5d50e1d8 JK	60	static inline int
5d50e1d8 JK	61	hash_net4_do_data_match(const struct hash_net4_elem *elem)
b3837029	62	{
5d50e1d8	63	return elem->nomatch ? -ENOTEMPTY : 1;
2a7cef2a JK	64	}
	65
	66	static inline void
5d50e1d8	67	hash_net4_data_set_flags(struct hash_net4_elem *elem, u32 flags)
2a7cef2a	68	{
5d50e1d8	69	elem->nomatch = (flags >> 16) & IPSET_FLAG_NOMATCH;
6eb4c7e9 JK	70	}
	71
	72	static inline void
5d50e1d8	73	hash_net4_data_reset_flags(struct hash_net4_elem elem, u8 flags)
2a7cef2a	74	{
5d50e1d8	75	swap(*flags, elem->nomatch);
b3837029 JK	76	}
	77
	78	static inline void
	79	hash_net4_data_netmask(struct hash_net4_elem *elem, u8 cidr)
	80	{
	81	elem->ip &= ip_set_netmask(cidr);
	82	elem->cidr = cidr;
	83	}
	84
b3837029 JK	85	static bool
	86	hash_net4_data_list(struct sk_buff skb, const struct hash_net4_elem data)
	87	{
2a7cef2a JK	88	u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
2a7cef2a JK	89
7cf7899d DM	90	if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip) \|\|
	91	nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr) \|\|
	92	(flags &&
	93	nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
	94	goto nla_put_failure;
728a7e69	95	return false;
b3837029 JK	96
b3837029 JK	97	nla_put_failure:
728a7e69	98	return true;
b3837029 JK	99	}
b3837029 JK	100
5d50e1d8 JK	101	static inline void
	102	hash_net4_data_next(struct hash_net4_elem *next,
	103	const struct hash_net4_elem *d)
b3837029	104	{
5d50e1d8	105	next->ip = d->ip;
b3837029 JK	106	}
b3837029 JK	107
5d50e1d8	108	#define MTYPE hash_net4
b3837029	109	#define HOST_MASK 32
5d50e1d8	110	#include "ip_set_hash_gen.h"
3d14b171	111
b3837029 JK	112	static int
b3837029 JK	113	hash_net4_kadt(struct ip_set set, const struct sk_buff skb,
b66554cf	114	const struct xt_action_param *par,
5d50e1d8	115	enum ipset_adt adt, struct ip_set_adt_opt *opt)
b3837029	116	{
21956ab2	117	const struct hash_net4 *h = set->data;
b3837029	118	ipset_adtfn adtfn = set->variant->adt[adt];
5d50e1d8	119	struct hash_net4_elem e = {
f690cbae	120	.cidr = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK),
9b03a5ef	121	};
ca134ce8	122	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
b3837029	123
5d50e1d8	124	if (e.cidr == 0)
b3837029 JK	125	return -EINVAL;
b3837029 JK	126	if (adt == IPSET_TEST)
5d50e1d8	127	e.cidr = HOST_MASK;
b3837029	128
5d50e1d8 JK	129	ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip);
5d50e1d8 JK	130	e.ip &= ip_set_netmask(e.cidr);
b3837029	131
5d50e1d8	132	return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
b3837029 JK	133	}
	134
	135	static int
	136	hash_net4_uadt(struct ip_set set, struct nlattr tb[],
3d14b171	137	enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
b3837029	138	{
21956ab2	139	const struct hash_net4 *h = set->data;
b3837029	140	ipset_adtfn adtfn = set->variant->adt[adt];
5d50e1d8	141	struct hash_net4_elem e = { .cidr = HOST_MASK };
ca134ce8	142	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
0b8d9073	143	u32 ip = 0, ip_to = 0;
b3837029 JK	144	int ret;
b3837029 JK	145
a212e08e SP	146	if (tb[IPSET_ATTR_LINENO])
	147	*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
	148
b3837029	149	if (unlikely(!tb[IPSET_ATTR_IP] \|\|
7dd37bc8	150	!ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
b3837029 JK	151	return -IPSET_ERR_PROTOCOL;
b3837029 JK	152
8e55d2e5 SP	153	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
	154	if (ret)
	155	return ret;
	156
	157	ret = ip_set_get_extensions(set, tb, &ext);
b3837029 JK	158	if (ret)
	159	return ret;
	160
d0d9e0a5	161	if (tb[IPSET_ATTR_CIDR]) {
5d50e1d8 JK	162	e.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
5d50e1d8 JK	163	if (!e.cidr \|\| e.cidr > HOST_MASK)
d0d9e0a5 JK	164	return -IPSET_ERR_INVALID_CIDR;
d0d9e0a5 JK	165	}
b3837029	166
43c56e59	167	if (tb[IPSET_ATTR_CADT_FLAGS]) {
2a7cef2a	168	u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
ca0f6a5c	169
2a7cef2a	170	if (cadt_flags & IPSET_FLAG_NOMATCH)
43c56e59	171	flags \|= (IPSET_FLAG_NOMATCH << 16);
2a7cef2a JK	172	}
2a7cef2a JK	173
d0d9e0a5	174	if (adt == IPSET_TEST \|\| !tb[IPSET_ATTR_IP_TO]) {
5d50e1d8 JK	175	e.ip = htonl(ip & ip_set_hostmask(e.cidr));
5d50e1d8 JK	176	ret = adtfn(set, &e, &ext, &ext, flags);
ca0f6a5c	177	return ip_set_enomatch(ret, flags, adt, set) ? -ret :
43c56e59	178	ip_set_eexist(ret, flags) ? 0 : ret;
d0d9e0a5	179	}
b3837029	180
d0d9e0a5 JK	181	ip_to = ip;
	182	if (tb[IPSET_ATTR_IP_TO]) {
	183	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
	184	if (ret)
	185	return ret;
	186	if (ip_to < ip)
	187	swap(ip, ip_to);
	188	if (ip + UINT_MAX == ip_to)
	189	return -IPSET_ERR_HASH_RANGE;
	190	}
	191	if (retried)
6e27c9b4	192	ip = ntohl(h->next.ip);
0b8d9073	193	do {
5d50e1d8	194	e.ip = htonl(ip);
0b8d9073	195	ip = ip_set_range_to_cidr(ip, ip_to, &e.cidr);
5d50e1d8	196	ret = adtfn(set, &e, &ext, &ext, flags);
d0d9e0a5 JK	197	if (ret && !ip_set_eexist(ret, flags))
d0d9e0a5 JK	198	return ret;
ca0f6a5c JK	199
ca0f6a5c JK	200	ret = 0;
0b8d9073	201	} while (ip++ < ip_to);
d0d9e0a5	202	return ret;
b3837029 JK	203	}
b3837029 JK	204
03c8b234	205	/* IPv6 variant */
b3837029 JK	206
	207	struct hash_net6_elem {
	208	union nf_inet_addr ip;
	209	u16 padding0;
2a7cef2a	210	u8 nomatch;
b3837029 JK	211	u8 cidr;
	212	};
	213
5d50e1d8 JK	214	/* Common functions */
5d50e1d8 JK	215
b3837029 JK	216	static inline bool
b3837029 JK	217	hash_net6_data_equal(const struct hash_net6_elem *ip1,
89dc79b7 JK	218	const struct hash_net6_elem *ip2,
89dc79b7 JK	219	u32 *multi)
b3837029	220	{
29e3b160	221	return ipv6_addr_equal(&ip1->ip.in6, &ip2->ip.in6) &&
b3837029 JK	222	ip1->cidr == ip2->cidr;
	223	}
	224
5d50e1d8 JK	225	static inline int
5d50e1d8 JK	226	hash_net6_do_data_match(const struct hash_net6_elem *elem)
2a7cef2a	227	{
5d50e1d8	228	return elem->nomatch ? -ENOTEMPTY : 1;
6eb4c7e9 JK	229	}
	230
	231	static inline void
5d50e1d8	232	hash_net6_data_set_flags(struct hash_net6_elem *elem, u32 flags)
2a7cef2a	233	{
5d50e1d8	234	elem->nomatch = (flags >> 16) & IPSET_FLAG_NOMATCH;
b3837029 JK	235	}
	236
	237	static inline void
5d50e1d8	238	hash_net6_data_reset_flags(struct hash_net6_elem elem, u8 flags)
b3837029	239	{
5d50e1d8	240	swap(*flags, elem->nomatch);
b3837029 JK	241	}
b3837029 JK	242
b3837029 JK	243	static inline void
	244	hash_net6_data_netmask(struct hash_net6_elem *elem, u8 cidr)
	245	{
	246	ip6_netmask(&elem->ip, cidr);
	247	elem->cidr = cidr;
	248	}
	249
	250	static bool
	251	hash_net6_data_list(struct sk_buff skb, const struct hash_net6_elem data)
	252	{
2a7cef2a JK	253	u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
2a7cef2a JK	254
7cf7899d DM	255	if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip.in6) \|\|
	256	nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr) \|\|
	257	(flags &&
	258	nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
	259	goto nla_put_failure;
728a7e69	260	return false;
b3837029 JK	261
b3837029 JK	262	nla_put_failure:
728a7e69	263	return true;
b3837029 JK	264	}
b3837029 JK	265
5d50e1d8	266	static inline void
21956ab2	267	hash_net6_data_next(struct hash_net6_elem *next,
5d50e1d8	268	const struct hash_net6_elem *d)
b3837029	269	{
b3837029 JK	270	}
b3837029 JK	271
5d50e1d8	272	#undef MTYPE
b3837029 JK	273	#undef HOST_MASK
b3837029 JK	274
5d50e1d8	275	#define MTYPE hash_net6
b3837029	276	#define HOST_MASK 128
5d50e1d8 JK	277	#define IP_SET_EMIT_CREATE
5d50e1d8 JK	278	#include "ip_set_hash_gen.h"
3d14b171	279
b3837029 JK	280	static int
b3837029 JK	281	hash_net6_kadt(struct ip_set set, const struct sk_buff skb,
b66554cf	282	const struct xt_action_param *par,
5d50e1d8	283	enum ipset_adt adt, struct ip_set_adt_opt *opt)
b3837029	284	{
21956ab2	285	const struct hash_net6 *h = set->data;
b3837029	286	ipset_adtfn adtfn = set->variant->adt[adt];
5d50e1d8	287	struct hash_net6_elem e = {
f690cbae	288	.cidr = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK),
9b03a5ef	289	};
ca134ce8	290	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
b3837029	291
5d50e1d8	292	if (e.cidr == 0)
b3837029 JK	293	return -EINVAL;
b3837029 JK	294	if (adt == IPSET_TEST)
5d50e1d8	295	e.cidr = HOST_MASK;
b3837029	296
5d50e1d8 JK	297	ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip.in6);
5d50e1d8 JK	298	ip6_netmask(&e.ip, e.cidr);
b3837029	299
5d50e1d8	300	return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
b3837029 JK	301	}
	302
	303	static int
	304	hash_net6_uadt(struct ip_set set, struct nlattr tb[],
3d14b171	305	enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
b3837029	306	{
b3837029	307	ipset_adtfn adtfn = set->variant->adt[adt];
5d50e1d8	308	struct hash_net6_elem e = { .cidr = HOST_MASK };
ca134ce8	309	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
b3837029 JK	310	int ret;
b3837029 JK	311
a212e08e SP	312	if (tb[IPSET_ATTR_LINENO])
	313	*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
	314
b3837029	315	if (unlikely(!tb[IPSET_ATTR_IP] \|\|
7dd37bc8	316	!ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
b3837029	317	return -IPSET_ERR_PROTOCOL;
d0d9e0a5 JK	318	if (unlikely(tb[IPSET_ATTR_IP_TO]))
d0d9e0a5 JK	319	return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
b3837029	320
8e55d2e5 SP	321	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip);
	322	if (ret)
	323	return ret;
	324
	325	ret = ip_set_get_extensions(set, tb, &ext);
b3837029 JK	326	if (ret)
	327	return ret;
	328
aff22758	329	if (tb[IPSET_ATTR_CIDR]) {
5d50e1d8	330	e.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
aff22758 SP	331	if (!e.cidr \|\| e.cidr > HOST_MASK)
	332	return -IPSET_ERR_INVALID_CIDR;
	333	}
b3837029	334
5d50e1d8	335	ip6_netmask(&e.ip, e.cidr);
b3837029	336
43c56e59	337	if (tb[IPSET_ATTR_CADT_FLAGS]) {
2a7cef2a	338	u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
ca0f6a5c	339
2a7cef2a	340	if (cadt_flags & IPSET_FLAG_NOMATCH)
43c56e59	341	flags \|= (IPSET_FLAG_NOMATCH << 16);
2a7cef2a JK	342	}
2a7cef2a JK	343
5d50e1d8	344	ret = adtfn(set, &e, &ext, &ext, flags);
b3837029	345
0f1799ba	346	return ip_set_enomatch(ret, flags, adt, set) ? -ret :
43c56e59	347	ip_set_eexist(ret, flags) ? 0 : ret;
b3837029 JK	348	}
b3837029 JK	349
b3837029 JK	350	static struct ip_set_type hash_net_type __read_mostly = {
	351	.name = "hash:net",
	352	.protocol = IPSET_PROTOCOL,
3e0304a5	353	.features = IPSET_TYPE_IP \| IPSET_TYPE_NOMATCH,
b3837029	354	.dimension = IPSET_DIM_ONE,
c15f1c83	355	.family = NFPROTO_UNSPEC,
35b8dcf8 JK	356	.revision_min = IPSET_TYPE_REV_MIN,
35b8dcf8 JK	357	.revision_max = IPSET_TYPE_REV_MAX,
b3837029 JK	358	.create = hash_net_create,
	359	.create_policy = {
	360	[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
	361	[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
	362	[IPSET_ATTR_PROBES] = { .type = NLA_U8 },
	363	[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
	364	[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
5d50e1d8	365	[IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
b3837029 JK	366	},
	367	.adt_policy = {
	368	[IPSET_ATTR_IP] = { .type = NLA_NESTED },
d0d9e0a5	369	[IPSET_ATTR_IP_TO] = { .type = NLA_NESTED },
b3837029 JK	370	[IPSET_ATTR_CIDR] = { .type = NLA_U8 },
b3837029 JK	371	[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
2a7cef2a	372	[IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
00d71b27 JK	373	[IPSET_ATTR_BYTES] = { .type = NLA_U64 },
00d71b27 JK	374	[IPSET_ATTR_PACKETS] = { .type = NLA_U64 },
03726186 SP	375	[IPSET_ATTR_COMMENT] = { .type = NLA_NUL_STRING,
03726186 SP	376	.len = IPSET_MAX_COMMENT_SIZE },
af331419 AD	377	[IPSET_ATTR_SKBMARK] = { .type = NLA_U64 },
	378	[IPSET_ATTR_SKBPRIO] = { .type = NLA_U32 },
	379	[IPSET_ATTR_SKBQUEUE] = { .type = NLA_U16 },
b3837029 JK	380	},
	381	.me = THIS_MODULE,
	382	};
	383
	384	static int __init
	385	hash_net_init(void)
	386	{
	387	return ip_set_type_register(&hash_net_type);
	388	}
	389
	390	static void __exit
	391	hash_net_fini(void)
	392	{
18f84d41	393	rcu_barrier();
b3837029 JK	394	ip_set_type_unregister(&hash_net_type);
	395	}
	396
	397	module_init(hash_net_init);
	398	module_exit(hash_net_fini);