[thirdparty/ipset.git] / kernel / net / netfilter / ipset / ip_set_hash_netportnet.c

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

/* Kernel module implementing an IP set type: the hash:ip,port,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 <net/tcp.h>

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

#define IPSET_TYPE_REV_MIN	0
/*				0    Comments support added */
/*				1    Forceadd support added */
/*				2    skbinfo support added */
#define IPSET_TYPE_REV_MAX	3 /* bucketsize, initval 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,port,net", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
MODULE_ALIAS("ip_set_hash:net,port,net");

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

/* IPv4 variant */

/* Member elements */
struct hash_netportnet4_elem {
	union {
		__be32 ip[2];
		__be64 ipcmp;
	};
	__be16 port;
	union {
		u8 cidr[2];
		u16 ccmp;
	};
	u16 padding;
	u8 nomatch;
	u8 proto;
};

/* Common functions */

static bool
hash_netportnet4_data_equal(const struct hash_netportnet4_elem *ip1,
			    const struct hash_netportnet4_elem *ip2,
			    u32 *multi)
{
	return ip1->ipcmp == ip2->ipcmp &&
	       ip1->ccmp == ip2->ccmp &&
	       ip1->port == ip2->port &&
	       ip1->proto == ip2->proto;
}

static int
hash_netportnet4_do_data_match(const struct hash_netportnet4_elem *elem)
{
	return elem->nomatch ? -ENOTEMPTY : 1;
}

static void
hash_netportnet4_data_set_flags(struct hash_netportnet4_elem *elem, u32 flags)
{
	elem->nomatch = !!((flags >> 16) & IPSET_FLAG_NOMATCH);
}

static void
hash_netportnet4_data_reset_flags(struct hash_netportnet4_elem *elem, u8 *flags)
{
	swap(*flags, elem->nomatch);
}

static void
hash_netportnet4_data_reset_elem(struct hash_netportnet4_elem *elem,
				 struct hash_netportnet4_elem *orig)
{
	elem->ip[1] = orig->ip[1];
}

static void
hash_netportnet4_data_netmask(struct hash_netportnet4_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_netportnet4_data_list(struct sk_buff *skb,
			   const struct hash_netportnet4_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_net16(skb, IPSET_ATTR_PORT, data->port) ||
	    nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr[0]) ||
	    nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr[1]) ||
	    nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto) ||
	    (flags &&
	     nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
		goto nla_put_failure;
	return false;

nla_put_failure:
	return true;
}

static void
hash_netportnet4_data_next(struct hash_netportnet4_elem *next,
			   const struct hash_netportnet4_elem *d)
{
	next->ipcmp = d->ipcmp;
	next->port = d->port;
}

#define MTYPE		hash_netportnet4
#define HOST_MASK	32
#include "ip_set_hash_gen.h"

static void
hash_netportnet4_init(struct hash_netportnet4_elem *e)
{
	e->cidr[0] = HOST_MASK;
	e->cidr[1] = HOST_MASK;
}

static int
hash_netportnet4_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_netportnet4 *h = set->data;
	ipset_adtfn adtfn = set->variant->adt[adt];
	struct hash_netportnet4_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;

	if (!ip_set_get_ip4_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
				 &e.port, &e.proto))
		return -EINVAL;

	ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip[0]);
	ip4addrptr(skb, opt->flags & IPSET_DIM_THREE_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 u32
hash_netportnet4_range_to_cidr(u32 from, u32 to, u8 *cidr)
{
	if (from == 0 && to == UINT_MAX) {
		*cidr = 0;
		return to;
	}
	return ip_set_range_to_cidr(from, to, cidr);
}

static int
hash_netportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
		      enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
{
	struct hash_netportnet4 *h = set->data;
	ipset_adtfn adtfn = set->variant->adt[adt];
	struct hash_netportnet4_elem e = { };
	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
	u32 ip = 0, ip_to = 0, p = 0, port, port_to;
	u32 ip2_from = 0, ip2_to = 0, ip2, i = 0;
	bool with_ports = false;
	int ret;

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

	hash_netportnet4_init(&e);
	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
		     !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] > 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] > HOST_MASK)
			return -IPSET_ERR_INVALID_CIDR;
	}

	e.port = nla_get_be16(tb[IPSET_ATTR_PORT]);

	if (tb[IPSET_ATTR_PROTO]) {
		e.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
		with_ports = ip_set_proto_with_ports(e.proto);

		if (e.proto == 0)
			return -IPSET_ERR_INVALID_PROTO;
	} else {
		return -IPSET_ERR_MISSING_PROTO;
	}

	if (!(with_ports || e.proto == IPPROTO_ICMP))
		e.port = 0;

	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);
	}

	with_ports = with_ports && tb[IPSET_ATTR_PORT_TO];
	if (adt == IPSET_TEST ||
	    !(tb[IPSET_ATTR_IP_TO] || with_ports || 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 > ip_to)
			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]);
	}

	port_to = port = ntohs(e.port);
	if (tb[IPSET_ATTR_PORT_TO]) {
		port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
		if (port > port_to)
			swap(port, port_to);
	}

	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_from > ip2_to)
			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]);
		p = ntohs(h->next.port);
		ip2 = ntohl(h->next.ip[1]);
	} else {
		p = port;
		ip2 = ip2_from;
	}

	do {
		e.ip[0] = htonl(ip);
		ip = hash_netportnet4_range_to_cidr(ip, ip_to, &e.cidr[0]);
		for (; p <= port_to; p++) {
			e.port = htons(p);
			do {
				i++;
				e.ip[1] = htonl(ip2);
				if (i > IPSET_MAX_RANGE) {
					hash_netportnet4_data_next(&h->next,
								   &e);
					return -ERANGE;
				}
				ip2 = hash_netportnet4_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;
			} while (ip2++ < ip2_to);
			ip2 = ip2_from;
		}
		p = port;
	} while (ip++ < ip_to);
	return ret;
}

/* IPv6 variant */

struct hash_netportnet6_elem {
	union nf_inet_addr ip[2];
	__be16 port;
	union {
		u8 cidr[2];
		u16 ccmp;
	};
	u16 padding;
	u8 nomatch;
	u8 proto;
};

/* Common functions */

static bool
hash_netportnet6_data_equal(const struct hash_netportnet6_elem *ip1,
			    const struct hash_netportnet6_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 &&
	       ip1->port == ip2->port &&
	       ip1->proto == ip2->proto;
}

static int
hash_netportnet6_do_data_match(const struct hash_netportnet6_elem *elem)
{
	return elem->nomatch ? -ENOTEMPTY : 1;
}

static void
hash_netportnet6_data_set_flags(struct hash_netportnet6_elem *elem, u32 flags)
{
	elem->nomatch = !!((flags >> 16) & IPSET_FLAG_NOMATCH);
}

static void
hash_netportnet6_data_reset_flags(struct hash_netportnet6_elem *elem, u8 *flags)
{
	swap(*flags, elem->nomatch);
}

static void
hash_netportnet6_data_reset_elem(struct hash_netportnet6_elem *elem,
				 struct hash_netportnet6_elem *orig)
{
	elem->ip[1] = orig->ip[1];
}

static void
hash_netportnet6_data_netmask(struct hash_netportnet6_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_netportnet6_data_list(struct sk_buff *skb,
			   const struct hash_netportnet6_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_net16(skb, IPSET_ATTR_PORT, data->port) ||
	    nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr[0]) ||
	    nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr[1]) ||
	    nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto) ||
	    (flags &&
	     nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
		goto nla_put_failure;
	return false;

nla_put_failure:
	return true;
}

static void
hash_netportnet6_data_next(struct hash_netportnet6_elem *next,
			   const struct hash_netportnet6_elem *d)
{
	next->port = d->port;
}

#undef MTYPE
#undef HOST_MASK

#define MTYPE		hash_netportnet6
#define HOST_MASK	128
#define IP_SET_EMIT_CREATE
#include "ip_set_hash_gen.h"

static void
hash_netportnet6_init(struct hash_netportnet6_elem *e)
{
	e->cidr[0] = HOST_MASK;
	e->cidr[1] = HOST_MASK;
}

static int
hash_netportnet6_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_netportnet6 *h = set->data;
	ipset_adtfn adtfn = set->variant->adt[adt];
	struct hash_netportnet6_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;

	if (!ip_set_get_ip6_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
				 &e.port, &e.proto))
		return -EINVAL;

	ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip[0].in6);
	ip6addrptr(skb, opt->flags & IPSET_DIM_THREE_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_netportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
		      enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
{
	const struct hash_netportnet6 *h = set->data;
	ipset_adtfn adtfn = set->variant->adt[adt];
	struct hash_netportnet6_elem e = { };
	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
	u32 port, port_to;
	bool with_ports = false;
	int ret;

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

	hash_netportnet6_init(&e);
	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
		     !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] > 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] > HOST_MASK)
			return -IPSET_ERR_INVALID_CIDR;
	}

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

	e.port = nla_get_be16(tb[IPSET_ATTR_PORT]);

	if (tb[IPSET_ATTR_PROTO]) {
		e.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
		with_ports = ip_set_proto_with_ports(e.proto);

		if (e.proto == 0)
			return -IPSET_ERR_INVALID_PROTO;
	} else {
		return -IPSET_ERR_MISSING_PROTO;
	}

	if (!(with_ports || e.proto == IPPROTO_ICMPV6))
		e.port = 0;

	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 || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
		ret = adtfn(set, &e, &ext, &ext, flags);
		return ip_set_enomatch(ret, flags, adt, set) ? -ret :
		       ip_set_eexist(ret, flags) ? 0 : ret;
	}

	port = ntohs(e.port);
	port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
	if (port > port_to)
		swap(port, port_to);

	if (retried)
		port = ntohs(h->next.port);
	for (; port <= port_to; port++) {
		e.port = htons(port);
		ret = adtfn(set, &e, &ext, &ext, flags);

		if (ret && !ip_set_eexist(ret, flags))
			return ret;

		ret = 0;
	}
	return ret;
}

static struct ip_set_type hash_netportnet_type __read_mostly = {
	.name		= "hash:net,port,net",
	.protocol	= IPSET_PROTOCOL,
	.features	= IPSET_TYPE_IP | IPSET_TYPE_PORT | IPSET_TYPE_IP2 |
			  IPSET_TYPE_NOMATCH,
	.dimension	= IPSET_DIM_THREE,
	.family		= NFPROTO_UNSPEC,
	.revision_min	= IPSET_TYPE_REV_MIN,
	.revision_max	= IPSET_TYPE_REV_MAX,
	.create_flags[IPSET_TYPE_REV_MAX] = IPSET_CREATE_FLAG_BUCKETSIZE,
	.create		= hash_netportnet_create,
	.create_policy	= {
		[IPSET_ATTR_HASHSIZE]	= { .type = NLA_U32 },
		[IPSET_ATTR_MAXELEM]	= { .type = NLA_U32 },
		[IPSET_ATTR_INITVAL]	= { .type = NLA_U32 },
		[IPSET_ATTR_BUCKETSIZE]	= { .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_PORT]	= { .type = NLA_U16 },
		[IPSET_ATTR_PORT_TO]	= { .type = NLA_U16 },
		[IPSET_ATTR_CIDR]	= { .type = NLA_U8 },
		[IPSET_ATTR_CIDR2]	= { .type = NLA_U8 },
		[IPSET_ATTR_PROTO]	= { .type = NLA_U8 },
		[IPSET_ATTR_CADT_FLAGS]	= { .type = NLA_U32 },
		[IPSET_ATTR_TIMEOUT]	= { .type = NLA_U32 },
		[IPSET_ATTR_LINENO]	= { .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_netportnet_init(void)
{
	return ip_set_type_register(&hash_netportnet_type);
}

static void __exit
hash_netportnet_fini(void)
{
	rcu_barrier();
	ip_set_type_unregister(&hash_netportnet_type);
}

module_init(hash_netportnet_init);
module_exit(hash_netportnet_fini);
Commit	Line	Data
6cd9def1	1	// SPDX-License-Identifier: GPL-2.0-only
0fdebb3b	2	/* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@netfilter.org>
990de541 OS	3	*/
	4
	5	/* Kernel module implementing an IP set type: the hash:ip,port,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>
	12	#include <linux/random.h>
	13	#include <net/ip.h>
	14	#include <net/ipv6.h>
	15	#include <net/netlink.h>
	16	#include <net/tcp.h>
	17
	18	#include <linux/netfilter.h>
	19	#include <linux/netfilter/ipset/pfxlen.h>
	20	#include <linux/netfilter/ipset/ip_set.h>
	21	#include <linux/netfilter/ipset/ip_set_getport.h>
	22	#include <linux/netfilter/ipset/ip_set_hash.h>
	23
	24	#define IPSET_TYPE_REV_MIN 0
ca6038b2	25	/* 0 Comments support added */
9c133301	26	/* 1 Forceadd support added */
de340a7f	27	/* 2 skbinfo support added */
280fe2d4	28	#define IPSET_TYPE_REV_MAX 3 /* bucketsize, initval support added */
990de541 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,port,net", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
	33	MODULE_ALIAS("ip_set_hash:net,port,net");
	34
	35	/* Type specific function prefix */
	36	#define HTYPE hash_netportnet
	37	#define IP_SET_HASH_WITH_PROTO
	38	#define IP_SET_HASH_WITH_NETS
	39	#define IPSET_NET_COUNT 2
	40
	41	/* IPv4 variant */
	42
	43	/* Member elements */
	44	struct hash_netportnet4_elem {
	45	union {
	46	__be32 ip[2];
	47	__be64 ipcmp;
	48	};
	49	__be16 port;
	50	union {
	51	u8 cidr[2];
	52	u16 ccmp;
	53	};
ab144ee5	54	u16 padding;
3f4ad4a5	55	u8 nomatch;
990de541 OS	56	u8 proto;
	57	};
	58
	59	/* Common functions */
	60
4392230c	61	static bool
990de541	62	hash_netportnet4_data_equal(const struct hash_netportnet4_elem *ip1,
9f497f7e JK	63	const struct hash_netportnet4_elem *ip2,
9f497f7e JK	64	u32 *multi)
990de541 OS	65	{
	66	return ip1->ipcmp == ip2->ipcmp &&
	67	ip1->ccmp == ip2->ccmp &&
	68	ip1->port == ip2->port &&
	69	ip1->proto == ip2->proto;
	70	}
	71
4392230c	72	static int
990de541 OS	73	hash_netportnet4_do_data_match(const struct hash_netportnet4_elem *elem)
	74	{
	75	return elem->nomatch ? -ENOTEMPTY : 1;
	76	}
	77
4392230c	78	static void
990de541 OS	79	hash_netportnet4_data_set_flags(struct hash_netportnet4_elem *elem, u32 flags)
	80	{
	81	elem->nomatch = !!((flags >> 16) & IPSET_FLAG_NOMATCH);
	82	}
	83
4392230c	84	static void
990de541 OS	85	hash_netportnet4_data_reset_flags(struct hash_netportnet4_elem elem, u8 flags)
	86	{
	87	swap(*flags, elem->nomatch);
	88	}
	89
4392230c	90	static void
990de541	91	hash_netportnet4_data_reset_elem(struct hash_netportnet4_elem *elem,
9f497f7e	92	struct hash_netportnet4_elem *orig)
990de541 OS	93	{
	94	elem->ip[1] = orig->ip[1];
	95	}
	96
4392230c	97	static void
990de541 OS	98	hash_netportnet4_data_netmask(struct hash_netportnet4_elem *elem,
	99	u8 cidr, bool inner)
	100	{
	101	if (inner) {
	102	elem->ip[1] &= ip_set_netmask(cidr);
	103	elem->cidr[1] = cidr;
	104	} else {
	105	elem->ip[0] &= ip_set_netmask(cidr);
	106	elem->cidr[0] = cidr;
	107	}
	108	}
	109
	110	static bool
	111	hash_netportnet4_data_list(struct sk_buff *skb,
9f497f7e	112	const struct hash_netportnet4_elem *data)
990de541 OS	113	{
	114	u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
	115
	116	if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip[0]) \|\|
	117	nla_put_ipaddr4(skb, IPSET_ATTR_IP2, data->ip[1]) \|\|
	118	nla_put_net16(skb, IPSET_ATTR_PORT, data->port) \|\|
	119	nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr[0]) \|\|
	120	nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr[1]) \|\|
	121	nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto) \|\|
	122	(flags &&
	123	nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
	124	goto nla_put_failure;
4d59a90b	125	return false;
990de541 OS	126
990de541 OS	127	nla_put_failure:
4d59a90b	128	return true;
990de541 OS	129	}
990de541 OS	130
4392230c	131	static void
990de541	132	hash_netportnet4_data_next(struct hash_netportnet4_elem *next,
9f497f7e	133	const struct hash_netportnet4_elem *d)
990de541 OS	134	{
	135	next->ipcmp = d->ipcmp;
	136	next->port = d->port;
	137	}
	138
	139	#define MTYPE hash_netportnet4
990de541 OS	140	#define HOST_MASK 32
	141	#include "ip_set_hash_gen.h"
	142
2d22179c ER	143	static void
	144	hash_netportnet4_init(struct hash_netportnet4_elem *e)
	145	{
	146	e->cidr[0] = HOST_MASK;
	147	e->cidr[1] = HOST_MASK;
	148	}
	149
990de541 OS	150	static int
990de541 OS	151	hash_netportnet4_kadt(struct ip_set set, const struct sk_buff skb,
9f497f7e JK	152	const struct xt_action_param *par,
9f497f7e JK	153	enum ipset_adt adt, struct ip_set_adt_opt *opt)
990de541	154	{
561b23c2	155	const struct hash_netportnet4 *h = set->data;
990de541	156	ipset_adtfn adtfn = set->variant->adt[adt];
864a7f59	157	struct hash_netportnet4_elem e = { };
990de541 OS	158	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
990de541 OS	159
6fa394d5 JK	160	e.cidr[0] = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK);
6fa394d5 JK	161	e.cidr[1] = INIT_CIDR(h->nets[0].cidr[1], HOST_MASK);
990de541 OS	162	if (adt == IPSET_TEST)
	163	e.ccmp = (HOST_MASK << (sizeof(e.cidr[0]) * 8)) \| HOST_MASK;
	164
	165	if (!ip_set_get_ip4_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
	166	&e.port, &e.proto))
	167	return -EINVAL;
	168
	169	ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip[0]);
	170	ip4addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &e.ip[1]);
	171	e.ip[0] &= ip_set_netmask(e.cidr[0]);
	172	e.ip[1] &= ip_set_netmask(e.cidr[1]);
	173
	174	return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
	175	}
	176
8a6f0ec6 JK	177	static u32
	178	hash_netportnet4_range_to_cidr(u32 from, u32 to, u8 *cidr)
	179	{
	180	if (from == 0 && to == UINT_MAX) {
	181	*cidr = 0;
	182	return to;
	183	}
	184	return ip_set_range_to_cidr(from, to, cidr);
	185	}
	186
990de541 OS	187	static int
990de541 OS	188	hash_netportnet4_uadt(struct ip_set set, struct nlattr tb[],
9f497f7e	189	enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
990de541	190	{
8a6f0ec6	191	struct hash_netportnet4 *h = set->data;
990de541	192	ipset_adtfn adtfn = set->variant->adt[adt];
6d9aea92	193	struct hash_netportnet4_elem e = { };
990de541	194	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
82403f9c	195	u32 ip = 0, ip_to = 0, p = 0, port, port_to;
8a6f0ec6	196	u32 ip2_from = 0, ip2_to = 0, ip2, i = 0;
990de541	197	bool with_ports = false;
990de541 OS	198	int ret;
990de541 OS	199
1ea77bda SP	200	if (tb[IPSET_ATTR_LINENO])
	201	*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
	202
2d22179c	203	hash_netportnet4_init(&e);
990de541 OS	204	if (unlikely(!tb[IPSET_ATTR_IP] \|\| !tb[IPSET_ATTR_IP2] \|\|
	205	!ip_set_attr_netorder(tb, IPSET_ATTR_PORT) \|\|
	206	!ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) \|\|
2ca2559e	207	!ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
990de541 OS	208	return -IPSET_ERR_PROTOCOL;
990de541 OS	209
2e3e37f9 SP	210	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
	211	if (ret)
	212	return ret;
	213
	214	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2], &ip2_from);
	215	if (ret)
	216	return ret;
	217
	218	ret = ip_set_get_extensions(set, tb, &ext);
990de541 OS	219	if (ret)
	220	return ret;
	221
	222	if (tb[IPSET_ATTR_CIDR]) {
4c54de30	223	e.cidr[0] = nla_get_u8(tb[IPSET_ATTR_CIDR]);
bdd09d11	224	if (e.cidr[0] > HOST_MASK)
990de541	225	return -IPSET_ERR_INVALID_CIDR;
990de541 OS	226	}
	227
	228	if (tb[IPSET_ATTR_CIDR2]) {
4c54de30	229	e.cidr[1] = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
bdd09d11	230	if (e.cidr[1] > HOST_MASK)
990de541	231	return -IPSET_ERR_INVALID_CIDR;
990de541 OS	232	}
990de541 OS	233
8403c62e	234	e.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
990de541 OS	235
	236	if (tb[IPSET_ATTR_PROTO]) {
	237	e.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
	238	with_ports = ip_set_proto_with_ports(e.proto);
	239
	240	if (e.proto == 0)
	241	return -IPSET_ERR_INVALID_PROTO;
9f497f7e	242	} else {
990de541	243	return -IPSET_ERR_MISSING_PROTO;
9f497f7e	244	}
990de541 OS	245
	246	if (!(with_ports \|\| e.proto == IPPROTO_ICMP))
	247	e.port = 0;
	248
	249	if (tb[IPSET_ATTR_CADT_FLAGS]) {
	250	u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
1ad6ec25	251
990de541 OS	252	if (cadt_flags & IPSET_FLAG_NOMATCH)
	253	flags \|= (IPSET_FLAG_NOMATCH << 16);
	254	}
	255
	256	with_ports = with_ports && tb[IPSET_ATTR_PORT_TO];
	257	if (adt == IPSET_TEST \|\|
	258	!(tb[IPSET_ATTR_IP_TO] \|\| with_ports \|\| tb[IPSET_ATTR_IP2_TO])) {
	259	e.ip[0] = htonl(ip & ip_set_hostmask(e.cidr[0]));
	260	e.ip[1] = htonl(ip2_from & ip_set_hostmask(e.cidr[1]));
	261	ret = adtfn(set, &e, &ext, &ext, flags);
	262	return ip_set_enomatch(ret, flags, adt, set) ? -ret :
	263	ip_set_eexist(ret, flags) ? 0 : ret;
	264	}
	265
	266	ip_to = ip;
	267	if (tb[IPSET_ATTR_IP_TO]) {
	268	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
	269	if (ret)
	270	return ret;
	271	if (ip > ip_to)
	272	swap(ip, ip_to);
	273	if (unlikely(ip + UINT_MAX == ip_to))
	274	return -IPSET_ERR_HASH_RANGE;
9f497f7e	275	} else {
a31f30ce	276	ip_set_mask_from_to(ip, ip_to, e.cidr[0]);
9f497f7e	277	}
990de541 OS	278
	279	port_to = port = ntohs(e.port);
	280	if (tb[IPSET_ATTR_PORT_TO]) {
	281	port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
	282	if (port > port_to)
	283	swap(port, port_to);
	284	}
	285
	286	ip2_to = ip2_from;
	287	if (tb[IPSET_ATTR_IP2_TO]) {
	288	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2_TO], &ip2_to);
	289	if (ret)
	290	return ret;
	291	if (ip2_from > ip2_to)
	292	swap(ip2_from, ip2_to);
	293	if (unlikely(ip2_from + UINT_MAX == ip2_to))
	294	return -IPSET_ERR_HASH_RANGE;
9f497f7e	295	} else {
a31f30ce	296	ip_set_mask_from_to(ip2_from, ip2_to, e.cidr[1]);
9f497f7e	297	}
990de541	298
82403f9c	299	if (retried) {
990de541	300	ip = ntohl(h->next.ip[0]);
82403f9c JK	301	p = ntohs(h->next.port);
	302	ip2 = ntohl(h->next.ip[1]);
	303	} else {
	304	p = port;
	305	ip2 = ip2_from;
	306	}
990de541	307
82403f9c	308	do {
990de541	309	e.ip[0] = htonl(ip);
8a6f0ec6	310	ip = hash_netportnet4_range_to_cidr(ip, ip_to, &e.cidr[0]);
990de541 OS	311	for (; p <= port_to; p++) {
990de541 OS	312	e.port = htons(p);
82403f9c	313	do {
8a6f0ec6	314	i++;
990de541	315	e.ip[1] = htonl(ip2);
8a6f0ec6 JK	316	if (i > IPSET_MAX_RANGE) {
	317	hash_netportnet4_data_next(&h->next,
	318	&e);
	319	return -ERANGE;
	320	}
	321	ip2 = hash_netportnet4_range_to_cidr(ip2,
	322	ip2_to, &e.cidr[1]);
990de541 OS	323	ret = adtfn(set, &e, &ext, &ext, flags);
	324	if (ret && !ip_set_eexist(ret, flags))
	325	return ret;
9f497f7e JK	326
9f497f7e JK	327	ret = 0;
82403f9c JK	328	} while (ip2++ < ip2_to);
82403f9c JK	329	ip2 = ip2_from;
990de541	330	}
82403f9c JK	331	p = port;
82403f9c JK	332	} while (ip++ < ip_to);
990de541 OS	333	return ret;
	334	}
	335
	336	/* IPv6 variant */
	337
	338	struct hash_netportnet6_elem {
	339	union nf_inet_addr ip[2];
	340	__be16 port;
	341	union {
	342	u8 cidr[2];
	343	u16 ccmp;
	344	};
ab144ee5	345	u16 padding;
3f4ad4a5	346	u8 nomatch;
990de541 OS	347	u8 proto;
	348	};
	349
	350	/* Common functions */
	351
4392230c	352	static bool
990de541	353	hash_netportnet6_data_equal(const struct hash_netportnet6_elem *ip1,
9f497f7e JK	354	const struct hash_netportnet6_elem *ip2,
9f497f7e JK	355	u32 *multi)
990de541 OS	356	{
	357	return ipv6_addr_equal(&ip1->ip[0].in6, &ip2->ip[0].in6) &&
	358	ipv6_addr_equal(&ip1->ip[1].in6, &ip2->ip[1].in6) &&
	359	ip1->ccmp == ip2->ccmp &&
	360	ip1->port == ip2->port &&
	361	ip1->proto == ip2->proto;
	362	}
	363
4392230c	364	static int
990de541 OS	365	hash_netportnet6_do_data_match(const struct hash_netportnet6_elem *elem)
	366	{
	367	return elem->nomatch ? -ENOTEMPTY : 1;
	368	}
	369
4392230c	370	static void
990de541 OS	371	hash_netportnet6_data_set_flags(struct hash_netportnet6_elem *elem, u32 flags)
	372	{
	373	elem->nomatch = !!((flags >> 16) & IPSET_FLAG_NOMATCH);
	374	}
	375
4392230c	376	static void
990de541 OS	377	hash_netportnet6_data_reset_flags(struct hash_netportnet6_elem elem, u8 flags)
	378	{
	379	swap(*flags, elem->nomatch);
	380	}
	381
4392230c	382	static void
990de541	383	hash_netportnet6_data_reset_elem(struct hash_netportnet6_elem *elem,
9f497f7e	384	struct hash_netportnet6_elem *orig)
990de541 OS	385	{
	386	elem->ip[1] = orig->ip[1];
	387	}
	388
4392230c	389	static void
990de541 OS	390	hash_netportnet6_data_netmask(struct hash_netportnet6_elem *elem,
	391	u8 cidr, bool inner)
	392	{
	393	if (inner) {
	394	ip6_netmask(&elem->ip[1], cidr);
	395	elem->cidr[1] = cidr;
	396	} else {
	397	ip6_netmask(&elem->ip[0], cidr);
	398	elem->cidr[0] = cidr;
	399	}
	400	}
	401
	402	static bool
	403	hash_netportnet6_data_list(struct sk_buff *skb,
9f497f7e	404	const struct hash_netportnet6_elem *data)
990de541 OS	405	{
	406	u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
	407
	408	if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip[0].in6) \|\|
	409	nla_put_ipaddr6(skb, IPSET_ATTR_IP2, &data->ip[1].in6) \|\|
	410	nla_put_net16(skb, IPSET_ATTR_PORT, data->port) \|\|
	411	nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr[0]) \|\|
	412	nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr[1]) \|\|
	413	nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto) \|\|
	414	(flags &&
	415	nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
	416	goto nla_put_failure;
4d59a90b	417	return false;
990de541 OS	418
990de541 OS	419	nla_put_failure:
4d59a90b	420	return true;
990de541 OS	421	}
990de541 OS	422
4392230c	423	static void
561b23c2	424	hash_netportnet6_data_next(struct hash_netportnet6_elem *next,
9f497f7e	425	const struct hash_netportnet6_elem *d)
990de541 OS	426	{
	427	next->port = d->port;
	428	}
	429
	430	#undef MTYPE
990de541 OS	431	#undef HOST_MASK
	432
	433	#define MTYPE hash_netportnet6
990de541 OS	434	#define HOST_MASK 128
	435	#define IP_SET_EMIT_CREATE
	436	#include "ip_set_hash_gen.h"
	437
2d22179c ER	438	static void
	439	hash_netportnet6_init(struct hash_netportnet6_elem *e)
	440	{
	441	e->cidr[0] = HOST_MASK;
	442	e->cidr[1] = HOST_MASK;
	443	}
	444
990de541 OS	445	static int
990de541 OS	446	hash_netportnet6_kadt(struct ip_set set, const struct sk_buff skb,
9f497f7e JK	447	const struct xt_action_param *par,
9f497f7e JK	448	enum ipset_adt adt, struct ip_set_adt_opt *opt)
990de541	449	{
561b23c2	450	const struct hash_netportnet6 *h = set->data;
990de541	451	ipset_adtfn adtfn = set->variant->adt[adt];
864a7f59	452	struct hash_netportnet6_elem e = { };
990de541 OS	453	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
990de541 OS	454
6fa394d5 JK	455	e.cidr[0] = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK);
6fa394d5 JK	456	e.cidr[1] = INIT_CIDR(h->nets[0].cidr[1], HOST_MASK);
990de541 OS	457	if (adt == IPSET_TEST)
	458	e.ccmp = (HOST_MASK << (sizeof(u8) * 8)) \| HOST_MASK;
	459
	460	if (!ip_set_get_ip6_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
	461	&e.port, &e.proto))
	462	return -EINVAL;
	463
	464	ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip[0].in6);
	465	ip6addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &e.ip[1].in6);
	466	ip6_netmask(&e.ip[0], e.cidr[0]);
	467	ip6_netmask(&e.ip[1], e.cidr[1]);
	468
	469	return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
	470	}
	471
	472	static int
	473	hash_netportnet6_uadt(struct ip_set set, struct nlattr tb[],
9f497f7e	474	enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
990de541	475	{
561b23c2	476	const struct hash_netportnet6 *h = set->data;
990de541	477	ipset_adtfn adtfn = set->variant->adt[adt];
6d9aea92	478	struct hash_netportnet6_elem e = { };
990de541 OS	479	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
	480	u32 port, port_to;
	481	bool with_ports = false;
	482	int ret;
	483
1ea77bda SP	484	if (tb[IPSET_ATTR_LINENO])
	485	*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
	486
2d22179c	487	hash_netportnet6_init(&e);
990de541 OS	488	if (unlikely(!tb[IPSET_ATTR_IP] \|\| !tb[IPSET_ATTR_IP2] \|\|
	489	!ip_set_attr_netorder(tb, IPSET_ATTR_PORT) \|\|
	490	!ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) \|\|
2ca2559e	491	!ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
990de541 OS	492	return -IPSET_ERR_PROTOCOL;
	493	if (unlikely(tb[IPSET_ATTR_IP_TO] \|\| tb[IPSET_ATTR_IP2_TO]))
	494	return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
	495
2e3e37f9 SP	496	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip[0]);
	497	if (ret)
	498	return ret;
	499
	500	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP2], &e.ip[1]);
	501	if (ret)
	502	return ret;
	503
	504	ret = ip_set_get_extensions(set, tb, &ext);
990de541 OS	505	if (ret)
	506	return ret;
	507
4c54de30	508	if (tb[IPSET_ATTR_CIDR]) {
990de541	509	e.cidr[0] = nla_get_u8(tb[IPSET_ATTR_CIDR]);
bdd09d11	510	if (e.cidr[0] > HOST_MASK)
4c54de30 SP	511	return -IPSET_ERR_INVALID_CIDR;
4c54de30 SP	512	}
990de541	513
4c54de30	514	if (tb[IPSET_ATTR_CIDR2]) {
990de541	515	e.cidr[1] = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
bdd09d11	516	if (e.cidr[1] > HOST_MASK)
4c54de30 SP	517	return -IPSET_ERR_INVALID_CIDR;
4c54de30 SP	518	}
990de541 OS	519
	520	ip6_netmask(&e.ip[0], e.cidr[0]);
	521	ip6_netmask(&e.ip[1], e.cidr[1]);
	522
8403c62e	523	e.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
990de541 OS	524
	525	if (tb[IPSET_ATTR_PROTO]) {
	526	e.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
	527	with_ports = ip_set_proto_with_ports(e.proto);
	528
	529	if (e.proto == 0)
	530	return -IPSET_ERR_INVALID_PROTO;
9f497f7e	531	} else {
990de541	532	return -IPSET_ERR_MISSING_PROTO;
9f497f7e	533	}
990de541 OS	534
	535	if (!(with_ports \|\| e.proto == IPPROTO_ICMPV6))
	536	e.port = 0;
	537
	538	if (tb[IPSET_ATTR_CADT_FLAGS]) {
	539	u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
1ad6ec25	540
990de541 OS	541	if (cadt_flags & IPSET_FLAG_NOMATCH)
	542	flags \|= (IPSET_FLAG_NOMATCH << 16);
	543	}
	544
	545	if (adt == IPSET_TEST \|\| !with_ports \|\| !tb[IPSET_ATTR_PORT_TO]) {
	546	ret = adtfn(set, &e, &ext, &ext, flags);
	547	return ip_set_enomatch(ret, flags, adt, set) ? -ret :
	548	ip_set_eexist(ret, flags) ? 0 : ret;
	549	}
	550
	551	port = ntohs(e.port);
	552	port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
	553	if (port > port_to)
	554	swap(port, port_to);
	555
	556	if (retried)
	557	port = ntohs(h->next.port);
	558	for (; port <= port_to; port++) {
	559	e.port = htons(port);
	560	ret = adtfn(set, &e, &ext, &ext, flags);
	561
	562	if (ret && !ip_set_eexist(ret, flags))
	563	return ret;
9f497f7e JK	564
9f497f7e JK	565	ret = 0;
990de541 OS	566	}
	567	return ret;
	568	}
	569
	570	static struct ip_set_type hash_netportnet_type __read_mostly = {
	571	.name = "hash:net,port,net",
	572	.protocol = IPSET_PROTOCOL,
	573	.features = IPSET_TYPE_IP \| IPSET_TYPE_PORT \| IPSET_TYPE_IP2 \|
	574	IPSET_TYPE_NOMATCH,
	575	.dimension = IPSET_DIM_THREE,
	576	.family = NFPROTO_UNSPEC,
	577	.revision_min = IPSET_TYPE_REV_MIN,
	578	.revision_max = IPSET_TYPE_REV_MAX,
de340a7f	579	.create_flags[IPSET_TYPE_REV_MAX] = IPSET_CREATE_FLAG_BUCKETSIZE,
990de541 OS	580	.create = hash_netportnet_create,
	581	.create_policy = {
	582	[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
	583	[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
280fe2d4	584	[IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
de340a7f	585	[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
990de541 OS	586	[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
	587	[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
	588	[IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
	589	},
	590	.adt_policy = {
	591	[IPSET_ATTR_IP] = { .type = NLA_NESTED },
	592	[IPSET_ATTR_IP_TO] = { .type = NLA_NESTED },
	593	[IPSET_ATTR_IP2] = { .type = NLA_NESTED },
	594	[IPSET_ATTR_IP2_TO] = { .type = NLA_NESTED },
	595	[IPSET_ATTR_PORT] = { .type = NLA_U16 },
	596	[IPSET_ATTR_PORT_TO] = { .type = NLA_U16 },
	597	[IPSET_ATTR_CIDR] = { .type = NLA_U8 },
	598	[IPSET_ATTR_CIDR2] = { .type = NLA_U8 },
	599	[IPSET_ATTR_PROTO] = { .type = NLA_U8 },
	600	[IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
	601	[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
	602	[IPSET_ATTR_LINENO] = { .type = NLA_U32 },
	603	[IPSET_ATTR_BYTES] = { .type = NLA_U64 },
	604	[IPSET_ATTR_PACKETS] = { .type = NLA_U64 },
ae578386 SP	605	[IPSET_ATTR_COMMENT] = { .type = NLA_NUL_STRING,
ae578386 SP	606	.len = IPSET_MAX_COMMENT_SIZE },
9c133301 AD	607	[IPSET_ATTR_SKBMARK] = { .type = NLA_U64 },
	608	[IPSET_ATTR_SKBPRIO] = { .type = NLA_U32 },
	609	[IPSET_ATTR_SKBQUEUE] = { .type = NLA_U16 },
990de541 OS	610	},
	611	.me = THIS_MODULE,
	612	};
	613
	614	static int __init
	615	hash_netportnet_init(void)
	616	{
	617	return ip_set_type_register(&hash_netportnet_type);
	618	}
	619
	620	static void __exit
	621	hash_netportnet_fini(void)
	622	{
2ca175d7	623	rcu_barrier();
990de541 OS	624	ip_set_type_unregister(&hash_netportnet_type);
	625	}
	626
	627	module_init(hash_netportnet_init);
	628	module_exit(hash_netportnet_fini);