Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 1 | /* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 as |
| 5 | * published by the Free Software Foundation. |
| 6 | */ |
| 7 | |
| 8 | /* Kernel module implementing an IP set type: the hash:net type */ |
| 9 | |
| 10 | #include <linux/jhash.h> |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/ip.h> |
| 13 | #include <linux/skbuff.h> |
| 14 | #include <linux/errno.h> |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 15 | #include <linux/random.h> |
| 16 | #include <net/ip.h> |
| 17 | #include <net/ipv6.h> |
| 18 | #include <net/netlink.h> |
| 19 | |
| 20 | #include <linux/netfilter.h> |
| 21 | #include <linux/netfilter/ipset/pfxlen.h> |
| 22 | #include <linux/netfilter/ipset/ip_set.h> |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 23 | #include <linux/netfilter/ipset/ip_set_hash.h> |
| 24 | |
Jozsef Kadlecsik | 35b8dcf | 2013-04-30 23:02:43 +0200 | [diff] [blame] | 25 | #define IPSET_TYPE_REV_MIN 0 |
| 26 | /* 1 Range as input support for IPv4 added */ |
| 27 | /* 2 nomatch flag support added */ |
Oliver Smith | fda75c6 | 2013-09-22 20:56:31 +0200 | [diff] [blame] | 28 | /* 3 Counters support added */ |
| 29 | #define IPSET_TYPE_REV_MAX 4 /* Comments support added */ |
Jozsef Kadlecsik | 10111a6 | 2012-09-21 21:59:32 +0200 | [diff] [blame] | 30 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 31 | MODULE_LICENSE("GPL"); |
| 32 | MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); |
Jozsef Kadlecsik | 35b8dcf | 2013-04-30 23:02:43 +0200 | [diff] [blame] | 33 | IP_SET_MODULE_DESC("hash:net", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 34 | MODULE_ALIAS("ip_set_hash:net"); |
| 35 | |
| 36 | /* Type specific function prefix */ |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 37 | #define HTYPE hash_net |
| 38 | #define IP_SET_HASH_WITH_NETS |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 39 | |
Jozsef Kadlecsik | 03c8b23 | 2013-09-07 00:43:52 +0200 | [diff] [blame] | 40 | /* IPv4 variant */ |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 41 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 42 | /* Member elements */ |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 43 | struct hash_net4_elem { |
| 44 | __be32 ip; |
| 45 | u16 padding0; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 46 | u8 nomatch; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 47 | u8 cidr; |
| 48 | }; |
| 49 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 50 | /* Common functions */ |
| 51 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 52 | static inline bool |
| 53 | hash_net4_data_equal(const struct hash_net4_elem *ip1, |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 54 | const struct hash_net4_elem *ip2, |
| 55 | u32 *multi) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 56 | { |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 57 | return ip1->ip == ip2->ip && |
| 58 | ip1->cidr == ip2->cidr; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 59 | } |
| 60 | |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 61 | static inline int |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 62 | hash_net4_do_data_match(const struct hash_net4_elem *elem) |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 63 | { |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 64 | return elem->nomatch ? -ENOTEMPTY : 1; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | static inline void |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 68 | hash_net4_data_set_flags(struct hash_net4_elem *elem, u32 flags) |
| 69 | { |
| 70 | elem->nomatch = (flags >> 16) & IPSET_FLAG_NOMATCH; |
| 71 | } |
| 72 | |
| 73 | static inline void |
| 74 | hash_net4_data_reset_flags(struct hash_net4_elem *elem, u8 *flags) |
| 75 | { |
| 76 | swap(*flags, elem->nomatch); |
| 77 | } |
| 78 | |
| 79 | static inline void |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 80 | hash_net4_data_netmask(struct hash_net4_elem *elem, u8 cidr) |
| 81 | { |
| 82 | elem->ip &= ip_set_netmask(cidr); |
| 83 | elem->cidr = cidr; |
| 84 | } |
| 85 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 86 | static bool |
| 87 | hash_net4_data_list(struct sk_buff *skb, const struct hash_net4_elem *data) |
| 88 | { |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 89 | u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0; |
| 90 | |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 91 | if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip) || |
| 92 | nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr) || |
| 93 | (flags && |
| 94 | nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags)))) |
| 95 | goto nla_put_failure; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 96 | return 0; |
| 97 | |
| 98 | nla_put_failure: |
| 99 | return 1; |
| 100 | } |
| 101 | |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 102 | static inline void |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 103 | hash_net4_data_next(struct hash_net4_elem *next, |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 104 | const struct hash_net4_elem *d) |
| 105 | { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 106 | next->ip = d->ip; |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 107 | } |
| 108 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 109 | #define MTYPE hash_net4 |
| 110 | #define PF 4 |
| 111 | #define HOST_MASK 32 |
| 112 | #include "ip_set_hash_gen.h" |
| 113 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 114 | static int |
| 115 | hash_net4_kadt(struct ip_set *set, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 116 | const struct xt_action_param *par, |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 117 | enum ipset_adt adt, struct ip_set_adt_opt *opt) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 118 | { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 119 | const struct hash_net *h = set->data; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 120 | ipset_adtfn adtfn = set->variant->adt[adt]; |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 121 | struct hash_net4_elem e = { |
Jozsef Kadlecsik | a04d8b6 | 2013-09-30 09:05:54 +0200 | [diff] [blame] | 122 | .cidr = IP_SET_INIT_CIDR(h->nets[0].cidr[0], HOST_MASK), |
Jozsef Kadlecsik | 9b03a5e | 2011-06-16 18:58:20 +0200 | [diff] [blame] | 123 | }; |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 124 | struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 125 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 126 | if (e.cidr == 0) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 127 | return -EINVAL; |
| 128 | if (adt == IPSET_TEST) |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 129 | e.cidr = HOST_MASK; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 130 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 131 | ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip); |
| 132 | e.ip &= ip_set_netmask(e.cidr); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 133 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 134 | return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | static int |
| 138 | hash_net4_uadt(struct ip_set *set, struct nlattr *tb[], |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 139 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 140 | { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 141 | const struct hash_net *h = set->data; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 142 | ipset_adtfn adtfn = set->variant->adt[adt]; |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 143 | struct hash_net4_elem e = { .cidr = HOST_MASK }; |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 144 | struct ip_set_ext ext = IP_SET_INIT_UEXT(set); |
Jozsef Kadlecsik | 20b2fab | 2013-05-01 18:47:32 +0200 | [diff] [blame] | 145 | u32 ip = 0, ip_to = 0, last; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 146 | int ret; |
| 147 | |
| 148 | if (unlikely(!tb[IPSET_ATTR_IP] || |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 149 | !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) || |
Jozsef Kadlecsik | 00d71b2 | 2013-04-08 23:11:02 +0200 | [diff] [blame] | 150 | !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS) || |
| 151 | !ip_set_optattr_netorder(tb, IPSET_ATTR_PACKETS) || |
| 152 | !ip_set_optattr_netorder(tb, IPSET_ATTR_BYTES))) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 153 | return -IPSET_ERR_PROTOCOL; |
| 154 | |
| 155 | if (tb[IPSET_ATTR_LINENO]) |
| 156 | *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); |
| 157 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 158 | ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip) || |
| 159 | ip_set_get_extensions(set, tb, &ext); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 160 | if (ret) |
| 161 | return ret; |
| 162 | |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 163 | if (tb[IPSET_ATTR_CIDR]) { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 164 | e.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]); |
| 165 | if (!e.cidr || e.cidr > HOST_MASK) |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 166 | return -IPSET_ERR_INVALID_CIDR; |
| 167 | } |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 168 | |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 169 | if (tb[IPSET_ATTR_CADT_FLAGS]) { |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 170 | u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]); |
| 171 | if (cadt_flags & IPSET_FLAG_NOMATCH) |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 172 | flags |= (IPSET_FLAG_NOMATCH << 16); |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 173 | } |
| 174 | |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 175 | if (adt == IPSET_TEST || !tb[IPSET_ATTR_IP_TO]) { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 176 | e.ip = htonl(ip & ip_set_hostmask(e.cidr)); |
| 177 | ret = adtfn(set, &e, &ext, &ext, flags); |
Jozsef Kadlecsik | 0f1799b | 2013-09-16 20:04:53 +0200 | [diff] [blame] | 178 | return ip_set_enomatch(ret, flags, adt, set) ? -ret: |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 179 | ip_set_eexist(ret, flags) ? 0 : ret; |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 180 | } |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 181 | |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 182 | ip_to = ip; |
| 183 | if (tb[IPSET_ATTR_IP_TO]) { |
| 184 | ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to); |
| 185 | if (ret) |
| 186 | return ret; |
| 187 | if (ip_to < ip) |
| 188 | swap(ip, ip_to); |
| 189 | if (ip + UINT_MAX == ip_to) |
| 190 | return -IPSET_ERR_HASH_RANGE; |
| 191 | } |
| 192 | if (retried) |
Jozsef Kadlecsik | 6e27c9b | 2012-09-21 21:44:58 +0200 | [diff] [blame] | 193 | ip = ntohl(h->next.ip); |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 194 | while (!after(ip, ip_to)) { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 195 | e.ip = htonl(ip); |
| 196 | last = ip_set_range_to_cidr(ip, ip_to, &e.cidr); |
| 197 | ret = adtfn(set, &e, &ext, &ext, flags); |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 198 | if (ret && !ip_set_eexist(ret, flags)) |
| 199 | return ret; |
| 200 | else |
| 201 | ret = 0; |
| 202 | ip = last + 1; |
| 203 | } |
| 204 | return ret; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 205 | } |
| 206 | |
Jozsef Kadlecsik | 03c8b23 | 2013-09-07 00:43:52 +0200 | [diff] [blame] | 207 | /* IPv6 variant */ |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 208 | |
| 209 | struct hash_net6_elem { |
| 210 | union nf_inet_addr ip; |
| 211 | u16 padding0; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 212 | u8 nomatch; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 213 | u8 cidr; |
| 214 | }; |
| 215 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 216 | /* Common functions */ |
| 217 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 218 | static inline bool |
| 219 | hash_net6_data_equal(const struct hash_net6_elem *ip1, |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 220 | const struct hash_net6_elem *ip2, |
| 221 | u32 *multi) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 222 | { |
YOSHIFUJI Hideaki / 吉藤英明 | 29e3b16 | 2013-01-29 12:49:03 +0000 | [diff] [blame] | 223 | return ipv6_addr_equal(&ip1->ip.in6, &ip2->ip.in6) && |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 224 | ip1->cidr == ip2->cidr; |
| 225 | } |
| 226 | |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 227 | static inline int |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 228 | hash_net6_do_data_match(const struct hash_net6_elem *elem) |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 229 | { |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 230 | return elem->nomatch ? -ENOTEMPTY : 1; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 231 | } |
| 232 | |
| 233 | static inline void |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 234 | hash_net6_data_set_flags(struct hash_net6_elem *elem, u32 flags) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 235 | { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 236 | elem->nomatch = (flags >> 16) & IPSET_FLAG_NOMATCH; |
| 237 | } |
| 238 | |
| 239 | static inline void |
| 240 | hash_net6_data_reset_flags(struct hash_net6_elem *elem, u8 *flags) |
| 241 | { |
| 242 | swap(*flags, elem->nomatch); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 243 | } |
| 244 | |
| 245 | static inline void |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 246 | hash_net6_data_netmask(struct hash_net6_elem *elem, u8 cidr) |
| 247 | { |
| 248 | ip6_netmask(&elem->ip, cidr); |
| 249 | elem->cidr = cidr; |
| 250 | } |
| 251 | |
| 252 | static bool |
| 253 | hash_net6_data_list(struct sk_buff *skb, const struct hash_net6_elem *data) |
| 254 | { |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 255 | u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0; |
| 256 | |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 257 | if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip.in6) || |
| 258 | nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr) || |
| 259 | (flags && |
| 260 | nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags)))) |
| 261 | goto nla_put_failure; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 262 | return 0; |
| 263 | |
| 264 | nla_put_failure: |
| 265 | return 1; |
| 266 | } |
| 267 | |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 268 | static inline void |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 269 | hash_net6_data_next(struct hash_net4_elem *next, |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 270 | const struct hash_net6_elem *d) |
| 271 | { |
| 272 | } |
| 273 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 274 | #undef MTYPE |
| 275 | #undef PF |
| 276 | #undef HOST_MASK |
| 277 | |
| 278 | #define MTYPE hash_net6 |
| 279 | #define PF 6 |
| 280 | #define HOST_MASK 128 |
| 281 | #define IP_SET_EMIT_CREATE |
| 282 | #include "ip_set_hash_gen.h" |
| 283 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 284 | static int |
| 285 | hash_net6_kadt(struct ip_set *set, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 286 | const struct xt_action_param *par, |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 287 | enum ipset_adt adt, struct ip_set_adt_opt *opt) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 288 | { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 289 | const struct hash_net *h = set->data; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 290 | ipset_adtfn adtfn = set->variant->adt[adt]; |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 291 | struct hash_net6_elem e = { |
Jozsef Kadlecsik | a04d8b6 | 2013-09-30 09:05:54 +0200 | [diff] [blame] | 292 | .cidr = IP_SET_INIT_CIDR(h->nets[0].cidr[0], HOST_MASK), |
Jozsef Kadlecsik | 9b03a5e | 2011-06-16 18:58:20 +0200 | [diff] [blame] | 293 | }; |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 294 | struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 295 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 296 | if (e.cidr == 0) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 297 | return -EINVAL; |
| 298 | if (adt == IPSET_TEST) |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 299 | e.cidr = HOST_MASK; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 300 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 301 | ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip.in6); |
| 302 | ip6_netmask(&e.ip, e.cidr); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 303 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 304 | return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | static int |
| 308 | hash_net6_uadt(struct ip_set *set, struct nlattr *tb[], |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 309 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 310 | { |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 311 | ipset_adtfn adtfn = set->variant->adt[adt]; |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 312 | struct hash_net6_elem e = { .cidr = HOST_MASK }; |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 313 | struct ip_set_ext ext = IP_SET_INIT_UEXT(set); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 314 | int ret; |
| 315 | |
| 316 | if (unlikely(!tb[IPSET_ATTR_IP] || |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 317 | !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) || |
Jozsef Kadlecsik | 00d71b2 | 2013-04-08 23:11:02 +0200 | [diff] [blame] | 318 | !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS) || |
| 319 | !ip_set_optattr_netorder(tb, IPSET_ATTR_PACKETS) || |
| 320 | !ip_set_optattr_netorder(tb, IPSET_ATTR_BYTES))) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 321 | return -IPSET_ERR_PROTOCOL; |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 322 | if (unlikely(tb[IPSET_ATTR_IP_TO])) |
| 323 | return -IPSET_ERR_HASH_RANGE_UNSUPPORTED; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 324 | |
| 325 | if (tb[IPSET_ATTR_LINENO]) |
| 326 | *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); |
| 327 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 328 | ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip) || |
| 329 | ip_set_get_extensions(set, tb, &ext); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 330 | if (ret) |
| 331 | return ret; |
| 332 | |
| 333 | if (tb[IPSET_ATTR_CIDR]) |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 334 | e.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 335 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 336 | if (!e.cidr || e.cidr > HOST_MASK) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 337 | return -IPSET_ERR_INVALID_CIDR; |
| 338 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 339 | ip6_netmask(&e.ip, e.cidr); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 340 | |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 341 | if (tb[IPSET_ATTR_CADT_FLAGS]) { |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 342 | u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]); |
| 343 | if (cadt_flags & IPSET_FLAG_NOMATCH) |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 344 | flags |= (IPSET_FLAG_NOMATCH << 16); |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 345 | } |
| 346 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 347 | ret = adtfn(set, &e, &ext, &ext, flags); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 348 | |
Jozsef Kadlecsik | 0f1799b | 2013-09-16 20:04:53 +0200 | [diff] [blame] | 349 | return ip_set_enomatch(ret, flags, adt, set) ? -ret : |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 350 | ip_set_eexist(ret, flags) ? 0 : ret; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 351 | } |
| 352 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 353 | static struct ip_set_type hash_net_type __read_mostly = { |
| 354 | .name = "hash:net", |
| 355 | .protocol = IPSET_PROTOCOL, |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 356 | .features = IPSET_TYPE_IP | IPSET_TYPE_NOMATCH, |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 357 | .dimension = IPSET_DIM_ONE, |
Jan Engelhardt | c15f1c8 | 2012-02-14 00:24:10 +0100 | [diff] [blame] | 358 | .family = NFPROTO_UNSPEC, |
Jozsef Kadlecsik | 35b8dcf | 2013-04-30 23:02:43 +0200 | [diff] [blame] | 359 | .revision_min = IPSET_TYPE_REV_MIN, |
| 360 | .revision_max = IPSET_TYPE_REV_MAX, |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 361 | .create = hash_net_create, |
| 362 | .create_policy = { |
| 363 | [IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 }, |
| 364 | [IPSET_ATTR_MAXELEM] = { .type = NLA_U32 }, |
| 365 | [IPSET_ATTR_PROBES] = { .type = NLA_U8 }, |
| 366 | [IPSET_ATTR_RESIZE] = { .type = NLA_U8 }, |
| 367 | [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 368 | [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 }, |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 369 | }, |
| 370 | .adt_policy = { |
| 371 | [IPSET_ATTR_IP] = { .type = NLA_NESTED }, |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 372 | [IPSET_ATTR_IP_TO] = { .type = NLA_NESTED }, |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 373 | [IPSET_ATTR_CIDR] = { .type = NLA_U8 }, |
| 374 | [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 375 | [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 }, |
Jozsef Kadlecsik | 00d71b2 | 2013-04-08 23:11:02 +0200 | [diff] [blame] | 376 | [IPSET_ATTR_BYTES] = { .type = NLA_U64 }, |
| 377 | [IPSET_ATTR_PACKETS] = { .type = NLA_U64 }, |
Oliver Smith | fda75c6 | 2013-09-22 20:56:31 +0200 | [diff] [blame] | 378 | [IPSET_ATTR_COMMENT] = { .type = NLA_NUL_STRING }, |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 379 | }, |
| 380 | .me = THIS_MODULE, |
| 381 | }; |
| 382 | |
| 383 | static int __init |
| 384 | hash_net_init(void) |
| 385 | { |
| 386 | return ip_set_type_register(&hash_net_type); |
| 387 | } |
| 388 | |
| 389 | static void __exit |
| 390 | hash_net_fini(void) |
| 391 | { |
| 392 | ip_set_type_unregister(&hash_net_type); |
| 393 | } |
| 394 | |
| 395 | module_init(hash_net_init); |
| 396 | module_exit(hash_net_fini); |