From ea53ac5b630e813aec20c7cdcfe511daca70dee4 Mon Sep 17 00:00:00 2001 From: Oliver Smith Date: Fri, 20 Sep 2013 10:13:53 +0200 Subject: [PATCH] netfilter: ipset: Add hash:net,net module to kernel. This adds a new set that provides the ability to configure pairs of subnets. A small amount of additional handling code has been added to the generic hash header file - this code is conditionally activated by a preprocessor definition. Signed-off-by: Oliver Smith Signed-off-by: Jozsef Kadlecsik --- net/netfilter/ipset/Kconfig | 9 + net/netfilter/ipset/Makefile | 1 + net/netfilter/ipset/ip_set_hash_gen.h | 58 ++- net/netfilter/ipset/ip_set_hash_netnet.c | 482 +++++++++++++++++++++++ 4 files changed, 541 insertions(+), 9 deletions(-) create mode 100644 net/netfilter/ipset/ip_set_hash_netnet.c diff --git a/net/netfilter/ipset/Kconfig b/net/netfilter/ipset/Kconfig index fd2c14b6c51b..9119f658a69b 100644 --- a/net/netfilter/ipset/Kconfig +++ b/net/netfilter/ipset/Kconfig @@ -99,6 +99,15 @@ config IP_SET_HASH_NET To compile it as a module, choose M here. If unsure, say N. +config IP_SET_HASH_NETNET + tristate "hash:net,net set support" + depends on IP_SET + help + This option adds the hash:net,net set type support, by which + one can store IPv4/IPv6 network address/prefix pairs in a set. + + To compile it as a module, choose M here. If unsure, say N. + config IP_SET_HASH_NETPORT tristate "hash:net,port set support" depends on IP_SET diff --git a/net/netfilter/ipset/Makefile b/net/netfilter/ipset/Makefile index 6e965ecd5444..43eef7a19e3c 100644 --- a/net/netfilter/ipset/Makefile +++ b/net/netfilter/ipset/Makefile @@ -20,6 +20,7 @@ obj-$(CONFIG_IP_SET_HASH_IPPORTNET) += ip_set_hash_ipportnet.o obj-$(CONFIG_IP_SET_HASH_NET) += ip_set_hash_net.o obj-$(CONFIG_IP_SET_HASH_NETPORT) += ip_set_hash_netport.o obj-$(CONFIG_IP_SET_HASH_NETIFACE) += ip_set_hash_netiface.o +obj-$(CONFIG_IP_SET_HASH_NETNET) += ip_set_hash_netnet.o # list types obj-$(CONFIG_IP_SET_LIST_SET) += ip_set_list_set.o diff --git a/net/netfilter/ipset/ip_set_hash_gen.h b/net/netfilter/ipset/ip_set_hash_gen.h index 3c26e5b946f5..6bd2eef4f5d0 100644 --- a/net/netfilter/ipset/ip_set_hash_gen.h +++ b/net/netfilter/ipset/ip_set_hash_gen.h @@ -142,11 +142,16 @@ hbucket_elem_add(struct hbucket *n, u8 ahash_max, size_t dsize) } #ifdef IP_SET_HASH_WITH_NETS +#if IPSET_NET_COUNT > 1 +#define __CIDR(cidr, i) (cidr[i]) +#else +#define __CIDR(cidr, i) (cidr) +#endif #ifdef IP_SET_HASH_WITH_NETS_PACKED /* When cidr is packed with nomatch, cidr - 1 is stored in the entry */ -#define CIDR(cidr) (cidr + 1) +#define CIDR(cidr, i) (__CIDR(cidr, i) + 1) #else -#define CIDR(cidr) (cidr) +#define CIDR(cidr, i) (__CIDR(cidr, i)) #endif #define SET_HOST_MASK(family) (family == AF_INET ? 32 : 128) @@ -210,6 +215,7 @@ hbucket_elem_add(struct hbucket *n, u8 ahash_max, size_t dsize) #define mtype_do_data_match(d) 1 #endif #define mtype_data_set_flags IPSET_TOKEN(MTYPE, _data_set_flags) +#define mtype_data_reset_elem IPSET_TOKEN(MTYPE, _data_reset_elem) #define mtype_data_reset_flags IPSET_TOKEN(MTYPE, _data_reset_flags) #define mtype_data_netmask IPSET_TOKEN(MTYPE, _data_netmask) #define mtype_data_list IPSET_TOKEN(MTYPE, _data_list) @@ -461,6 +467,9 @@ mtype_expire(struct ip_set *set, struct htype *h, u8 nets_length, size_t dsize) struct mtype_elem *data; u32 i; int j; +#ifdef IP_SET_HASH_WITH_NETS + u8 k; +#endif rcu_read_lock_bh(); t = rcu_dereference_bh(h->table); @@ -471,8 +480,9 @@ mtype_expire(struct ip_set *set, struct htype *h, u8 nets_length, size_t dsize) if (ip_set_timeout_expired(ext_timeout(data, set))) { pr_debug("expired %u/%u\n", i, j); #ifdef IP_SET_HASH_WITH_NETS - mtype_del_cidr(h, CIDR(data->cidr), - nets_length, 0); + for (k = 0; k < IPSET_NET_COUNT; k++) + mtype_del_cidr(h, CIDR(data->cidr, k), + nets_length, k); #endif ip_set_ext_destroy(set, data); if (j != n->pos - 1) @@ -658,8 +668,12 @@ reuse_slot: /* Fill out reused slot */ data = ahash_data(n, j, set->dsize); #ifdef IP_SET_HASH_WITH_NETS - mtype_del_cidr(h, CIDR(data->cidr), NLEN(set->family), 0); - mtype_add_cidr(h, CIDR(d->cidr), NLEN(set->family), 0); + for (i = 0; i < IPSET_NET_COUNT; i++) { + mtype_del_cidr(h, CIDR(data->cidr, i), + NLEN(set->family), i); + mtype_add_cidr(h, CIDR(d->cidr, i), + NLEN(set->family), i); + } #endif ip_set_ext_destroy(set, data); } else { @@ -673,7 +687,9 @@ reuse_slot: } data = ahash_data(n, n->pos++, set->dsize); #ifdef IP_SET_HASH_WITH_NETS - mtype_add_cidr(h, CIDR(d->cidr), NLEN(set->family), 0); + for (i = 0; i < IPSET_NET_COUNT; i++) + mtype_add_cidr(h, CIDR(d->cidr, i), NLEN(set->family), + i); #endif h->elements++; } @@ -704,6 +720,9 @@ mtype_del(struct ip_set *set, void *value, const struct ip_set_ext *ext, struct mtype_elem *data; struct hbucket *n; int i, ret = -IPSET_ERR_EXIST; +#ifdef IP_SET_HASH_WITH_NETS + u8 j; +#endif u32 key, multi = 0; rcu_read_lock_bh(); @@ -725,7 +744,9 @@ mtype_del(struct ip_set *set, void *value, const struct ip_set_ext *ext, n->pos--; h->elements--; #ifdef IP_SET_HASH_WITH_NETS - mtype_del_cidr(h, CIDR(d->cidr), NLEN(set->family), 0); + for (j = 0; j < IPSET_NET_COUNT; j++) + mtype_del_cidr(h, CIDR(d->cidr, j), NLEN(set->family), + j); #endif ip_set_ext_destroy(set, data); if (n->pos + AHASH_INIT_SIZE < n->size) { @@ -772,13 +793,26 @@ mtype_test_cidrs(struct ip_set *set, struct mtype_elem *d, struct htable *t = rcu_dereference_bh(h->table); struct hbucket *n; struct mtype_elem *data; +#if IPSET_NET_COUNT == 2 + struct mtype_elem orig = *d; + int i, j = 0, k; +#else int i, j = 0; +#endif u32 key, multi = 0; u8 nets_length = NLEN(set->family); pr_debug("test by nets\n"); for (; j < nets_length && h->nets[j].nets[0] && !multi; j++) { +#if IPSET_NET_COUNT == 2 + mtype_data_reset_elem(d, &orig); + mtype_data_netmask(d, h->nets[j].cidr[0], false); + for (k = 0; k < nets_length && h->nets[k].nets[1] && !multi; + k++) { + mtype_data_netmask(d, h->nets[k].cidr[1], true); +#else mtype_data_netmask(d, h->nets[j].cidr[0]); +#endif key = HKEY(d, h->initval, t->htable_bits); n = hbucket(t, key); for (i = 0; i < n->pos; i++) { @@ -798,6 +832,9 @@ mtype_test_cidrs(struct ip_set *set, struct mtype_elem *d, return mtype_data_match(data, ext, mext, set, flags); } +#if IPSET_NET_COUNT == 2 + } +#endif } return 0; } @@ -821,7 +858,10 @@ mtype_test(struct ip_set *set, void *value, const struct ip_set_ext *ext, #ifdef IP_SET_HASH_WITH_NETS /* If we test an IP address and not a network address, * try all possible network sizes */ - if (CIDR(d->cidr) == SET_HOST_MASK(set->family)) { + for (i = 0; i < IPSET_NET_COUNT; i++) + if (CIDR(d->cidr, i) != SET_HOST_MASK(set->family)) + break; + if (i == IPSET_NET_COUNT) { ret = mtype_test_cidrs(set, d, ext, mext, flags); goto out; } diff --git a/net/netfilter/ipset/ip_set_hash_netnet.c b/net/netfilter/ipset/ip_set_hash_netnet.c new file mode 100644 index 000000000000..771ce2b565a6 --- /dev/null +++ b/net/netfilter/ipset/ip_set_hash_netnet.c @@ -0,0 +1,482 @@ +/* Copyright (C) 2003-2013 Jozsef Kadlecsik + * Copyright (C) 2013 Oliver Smith + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#define IPSET_TYPE_REV_MIN 0 +#define IPSET_TYPE_REV_MAX 0 + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Oliver Smith "); +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; + 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 && + ip2->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 0; + +nla_put_failure: + return 1; +} + +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 PF 4 +#define HOST_MASK 32 +#include "ip_set_hash_gen.h" + +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 = { + .cidr[0] = h->nets[0].cidr[0] ? h->nets[0].cidr[0] : HOST_MASK, + .cidr[1] = h->nets[0].cidr[1] ? h->nets[0].cidr[1] : HOST_MASK, + }; + struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set); + + 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 = { .cidr[0] = HOST_MASK, + .cidr[1] = HOST_MASK }; + 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; + u8 cidr, cidr2; + int ret; + + if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] || + !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) || + !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS) || + !ip_set_optattr_netorder(tb, IPSET_ATTR_PACKETS) || + !ip_set_optattr_netorder(tb, IPSET_ATTR_BYTES))) + return -IPSET_ERR_PROTOCOL; + + if (tb[IPSET_ATTR_LINENO]) + *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); + + ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip) || + ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2], &ip2_from) || + ip_set_get_extensions(set, tb, &ext); + if (ret) + return ret; + + if (tb[IPSET_ATTR_CIDR]) { + cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]); + if (!cidr || cidr > HOST_MASK) + return -IPSET_ERR_INVALID_CIDR; + e.cidr[0] = cidr; + } + + if (tb[IPSET_ATTR_CIDR2]) { + cidr2 = nla_get_u8(tb[IPSET_ATTR_CIDR2]); + if (!cidr2 || cidr2 > HOST_MASK) + return -IPSET_ERR_INVALID_CIDR; + e.cidr[1] = cidr2; + } + + 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 (ip + UINT_MAX == ip_to) + return -IPSET_ERR_HASH_RANGE; + } + + 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 (ip2_from + UINT_MAX == ip2_to) + return -IPSET_ERR_HASH_RANGE; + + } + + 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, &cidr); + e.cidr[0] = cidr; + 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, &cidr2); + e.cidr[1] = cidr2; + ret = adtfn(set, &e, &ext, &ext, flags); + if (ret && !ip_set_eexist(ret, flags)) + return ret; + else + ret = 0; + ip2 = last2 + 1; + } + ip = last + 1; + } + return ret; +} + +/* IPv6 variants */ + +struct hash_netnet6_elem { + union nf_inet_addr ip[2]; + u8 nomatch; + 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 0; + +nla_put_failure: + return 1; +} + +static inline void +hash_netnet6_data_next(struct hash_netnet4_elem *next, + const struct hash_netnet6_elem *d) +{ +} + +#undef MTYPE +#undef PF +#undef HOST_MASK + +#define MTYPE hash_netnet6 +#define PF 6 +#define HOST_MASK 128 +#define IP_SET_EMIT_CREATE +#include "ip_set_hash_gen.h" + +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 = { + .cidr[0] = h->nets[0].cidr[0] ? h->nets[0].cidr[0] : HOST_MASK, + .cidr[1] = h->nets[0].cidr[1] ? h->nets[0].cidr[1] : HOST_MASK + }; + struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set); + + 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 = { .cidr[0] = HOST_MASK, + .cidr[1] = HOST_MASK }; + struct ip_set_ext ext = IP_SET_INIT_UEXT(set); + int ret; + + if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] || + !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) || + !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS) || + !ip_set_optattr_netorder(tb, IPSET_ATTR_PACKETS) || + !ip_set_optattr_netorder(tb, IPSET_ATTR_BYTES))) + return -IPSET_ERR_PROTOCOL; + if (unlikely(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_IP2_TO])) + return -IPSET_ERR_HASH_RANGE_UNSUPPORTED; + + if (tb[IPSET_ATTR_LINENO]) + *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); + + ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip[0]) || + ip_set_get_ipaddr6(tb[IPSET_ATTR_IP2], &e.ip[1]) || + 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 (tb[IPSET_ATTR_CIDR2]) + e.cidr[1] = nla_get_u8(tb[IPSET_ATTR_CIDR2]); + + if (!e.cidr[0] || e.cidr[0] > HOST_MASK || !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 }, + }, + .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) +{ + ip_set_type_unregister(&hash_netnet_type); +} + +module_init(hash_netnet_init); +module_exit(hash_netnet_fini); -- 2.30.2