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 */ |
Josh Hunt | 07cf8f5 | 2014-02-28 22:14:57 -0500 | [diff] [blame] | 29 | /* 4 Comments support added */ |
Anton Danilov | af33141 | 2014-08-28 10:11:29 +0400 | [diff] [blame] | 30 | /* 5 Forceadd support added */ |
| 31 | #define IPSET_TYPE_REV_MAX 6 /* skbinfo mapping support added */ |
Jozsef Kadlecsik | 10111a6 | 2012-09-21 21:59:32 +0200 | [diff] [blame] | 32 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 33 | MODULE_LICENSE("GPL"); |
| 34 | MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); |
Jozsef Kadlecsik | 35b8dcf | 2013-04-30 23:02:43 +0200 | [diff] [blame] | 35 | 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] | 36 | MODULE_ALIAS("ip_set_hash:net"); |
| 37 | |
| 38 | /* Type specific function prefix */ |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 39 | #define HTYPE hash_net |
| 40 | #define IP_SET_HASH_WITH_NETS |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 41 | |
Jozsef Kadlecsik | 03c8b23 | 2013-09-07 00:43:52 +0200 | [diff] [blame] | 42 | /* IPv4 variant */ |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 43 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 44 | /* Member elements */ |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 45 | struct hash_net4_elem { |
| 46 | __be32 ip; |
| 47 | u16 padding0; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 48 | u8 nomatch; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 49 | u8 cidr; |
| 50 | }; |
| 51 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 52 | /* Common functions */ |
| 53 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 54 | static inline bool |
| 55 | hash_net4_data_equal(const struct hash_net4_elem *ip1, |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 56 | const struct hash_net4_elem *ip2, |
| 57 | u32 *multi) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 58 | { |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 59 | return ip1->ip == ip2->ip && |
| 60 | ip1->cidr == ip2->cidr; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 61 | } |
| 62 | |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 63 | static inline int |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 64 | hash_net4_do_data_match(const struct hash_net4_elem *elem) |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 65 | { |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 66 | return elem->nomatch ? -ENOTEMPTY : 1; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | static inline void |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 70 | hash_net4_data_set_flags(struct hash_net4_elem *elem, u32 flags) |
| 71 | { |
| 72 | elem->nomatch = (flags >> 16) & IPSET_FLAG_NOMATCH; |
| 73 | } |
| 74 | |
| 75 | static inline void |
| 76 | hash_net4_data_reset_flags(struct hash_net4_elem *elem, u8 *flags) |
| 77 | { |
| 78 | swap(*flags, elem->nomatch); |
| 79 | } |
| 80 | |
| 81 | static inline void |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 82 | hash_net4_data_netmask(struct hash_net4_elem *elem, u8 cidr) |
| 83 | { |
| 84 | elem->ip &= ip_set_netmask(cidr); |
| 85 | elem->cidr = cidr; |
| 86 | } |
| 87 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 88 | static bool |
| 89 | hash_net4_data_list(struct sk_buff *skb, const struct hash_net4_elem *data) |
| 90 | { |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 91 | u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0; |
| 92 | |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 93 | if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip) || |
| 94 | nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr) || |
| 95 | (flags && |
| 96 | nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags)))) |
| 97 | goto nla_put_failure; |
Sergey Popovich | 728a7e6 | 2015-05-02 19:28:15 +0200 | [diff] [blame] | 98 | return false; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 99 | |
| 100 | nla_put_failure: |
Sergey Popovich | 728a7e6 | 2015-05-02 19:28:15 +0200 | [diff] [blame] | 101 | return true; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 102 | } |
| 103 | |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 104 | static inline void |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 105 | hash_net4_data_next(struct hash_net4_elem *next, |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 106 | const struct hash_net4_elem *d) |
| 107 | { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 108 | next->ip = d->ip; |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 109 | } |
| 110 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 111 | #define MTYPE hash_net4 |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 112 | #define HOST_MASK 32 |
| 113 | #include "ip_set_hash_gen.h" |
| 114 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 115 | static int |
| 116 | hash_net4_kadt(struct ip_set *set, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 117 | const struct xt_action_param *par, |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 118 | enum ipset_adt adt, struct ip_set_adt_opt *opt) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 119 | { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 120 | const struct hash_net *h = set->data; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 121 | ipset_adtfn adtfn = set->variant->adt[adt]; |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 122 | struct hash_net4_elem e = { |
Jozsef Kadlecsik | f690cba | 2015-06-12 22:11:00 +0200 | [diff] [blame] | 123 | .cidr = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK), |
Jozsef Kadlecsik | 9b03a5e | 2011-06-16 18:58:20 +0200 | [diff] [blame] | 124 | }; |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 125 | struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 126 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 127 | if (e.cidr == 0) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 128 | return -EINVAL; |
| 129 | if (adt == IPSET_TEST) |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 130 | e.cidr = HOST_MASK; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 131 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 132 | ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip); |
| 133 | e.ip &= ip_set_netmask(e.cidr); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 134 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 135 | return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 136 | } |
| 137 | |
| 138 | static int |
| 139 | hash_net4_uadt(struct ip_set *set, struct nlattr *tb[], |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 140 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 141 | { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 142 | const struct hash_net *h = set->data; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 143 | ipset_adtfn adtfn = set->variant->adt[adt]; |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 144 | struct hash_net4_elem e = { .cidr = HOST_MASK }; |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 145 | struct ip_set_ext ext = IP_SET_INIT_UEXT(set); |
Jozsef Kadlecsik | 20b2fab | 2013-05-01 18:47:32 +0200 | [diff] [blame] | 146 | u32 ip = 0, ip_to = 0, last; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 147 | int ret; |
| 148 | |
Sergey Popovich | a212e08 | 2015-06-12 21:26:43 +0200 | [diff] [blame] | 149 | if (tb[IPSET_ATTR_LINENO]) |
| 150 | *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); |
| 151 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 152 | if (unlikely(!tb[IPSET_ATTR_IP] || |
Sergey Popovich | 7dd37bc | 2015-06-12 21:14:09 +0200 | [diff] [blame] | 153 | !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS))) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 154 | return -IPSET_ERR_PROTOCOL; |
| 155 | |
Sergey Popovich | 8e55d2e | 2015-05-02 19:28:07 +0200 | [diff] [blame] | 156 | ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip); |
| 157 | if (ret) |
| 158 | return ret; |
| 159 | |
| 160 | ret = ip_set_get_extensions(set, tb, &ext); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 161 | if (ret) |
| 162 | return ret; |
| 163 | |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 164 | if (tb[IPSET_ATTR_CIDR]) { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 165 | e.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]); |
| 166 | if (!e.cidr || e.cidr > HOST_MASK) |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 167 | return -IPSET_ERR_INVALID_CIDR; |
| 168 | } |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 169 | |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 170 | if (tb[IPSET_ATTR_CADT_FLAGS]) { |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 171 | u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]); |
Jozsef Kadlecsik | ca0f6a5 | 2015-06-13 19:45:33 +0200 | [diff] [blame] | 172 | |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 173 | if (cadt_flags & IPSET_FLAG_NOMATCH) |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 174 | flags |= (IPSET_FLAG_NOMATCH << 16); |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 175 | } |
| 176 | |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 177 | if (adt == IPSET_TEST || !tb[IPSET_ATTR_IP_TO]) { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 178 | e.ip = htonl(ip & ip_set_hostmask(e.cidr)); |
| 179 | ret = adtfn(set, &e, &ext, &ext, flags); |
Jozsef Kadlecsik | ca0f6a5 | 2015-06-13 19:45:33 +0200 | [diff] [blame] | 180 | return ip_set_enomatch(ret, flags, adt, set) ? -ret : |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 181 | ip_set_eexist(ret, flags) ? 0 : ret; |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 182 | } |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 183 | |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 184 | ip_to = ip; |
| 185 | if (tb[IPSET_ATTR_IP_TO]) { |
| 186 | ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to); |
| 187 | if (ret) |
| 188 | return ret; |
| 189 | if (ip_to < ip) |
| 190 | swap(ip, ip_to); |
| 191 | if (ip + UINT_MAX == ip_to) |
| 192 | return -IPSET_ERR_HASH_RANGE; |
| 193 | } |
| 194 | if (retried) |
Jozsef Kadlecsik | 6e27c9b | 2012-09-21 21:44:58 +0200 | [diff] [blame] | 195 | ip = ntohl(h->next.ip); |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 196 | while (!after(ip, ip_to)) { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 197 | e.ip = htonl(ip); |
| 198 | last = ip_set_range_to_cidr(ip, ip_to, &e.cidr); |
| 199 | ret = adtfn(set, &e, &ext, &ext, flags); |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 200 | if (ret && !ip_set_eexist(ret, flags)) |
| 201 | return ret; |
Jozsef Kadlecsik | ca0f6a5 | 2015-06-13 19:45:33 +0200 | [diff] [blame] | 202 | |
| 203 | ret = 0; |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 204 | ip = last + 1; |
| 205 | } |
| 206 | return ret; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 207 | } |
| 208 | |
Jozsef Kadlecsik | 03c8b23 | 2013-09-07 00:43:52 +0200 | [diff] [blame] | 209 | /* IPv6 variant */ |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 210 | |
| 211 | struct hash_net6_elem { |
| 212 | union nf_inet_addr ip; |
| 213 | u16 padding0; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 214 | u8 nomatch; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 215 | u8 cidr; |
| 216 | }; |
| 217 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 218 | /* Common functions */ |
| 219 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 220 | static inline bool |
| 221 | hash_net6_data_equal(const struct hash_net6_elem *ip1, |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 222 | const struct hash_net6_elem *ip2, |
| 223 | u32 *multi) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 224 | { |
YOSHIFUJI Hideaki / 吉藤英明 | 29e3b16 | 2013-01-29 12:49:03 +0000 | [diff] [blame] | 225 | return ipv6_addr_equal(&ip1->ip.in6, &ip2->ip.in6) && |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 226 | ip1->cidr == ip2->cidr; |
| 227 | } |
| 228 | |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 229 | static inline int |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 230 | hash_net6_do_data_match(const struct hash_net6_elem *elem) |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 231 | { |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 232 | return elem->nomatch ? -ENOTEMPTY : 1; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | static inline void |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 236 | hash_net6_data_set_flags(struct hash_net6_elem *elem, u32 flags) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 237 | { |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 238 | elem->nomatch = (flags >> 16) & IPSET_FLAG_NOMATCH; |
| 239 | } |
| 240 | |
| 241 | static inline void |
| 242 | hash_net6_data_reset_flags(struct hash_net6_elem *elem, u8 *flags) |
| 243 | { |
| 244 | swap(*flags, elem->nomatch); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 245 | } |
| 246 | |
| 247 | static inline void |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 248 | hash_net6_data_netmask(struct hash_net6_elem *elem, u8 cidr) |
| 249 | { |
| 250 | ip6_netmask(&elem->ip, cidr); |
| 251 | elem->cidr = cidr; |
| 252 | } |
| 253 | |
| 254 | static bool |
| 255 | hash_net6_data_list(struct sk_buff *skb, const struct hash_net6_elem *data) |
| 256 | { |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 257 | u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0; |
| 258 | |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 259 | if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip.in6) || |
| 260 | nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr) || |
| 261 | (flags && |
| 262 | nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags)))) |
| 263 | goto nla_put_failure; |
Sergey Popovich | 728a7e6 | 2015-05-02 19:28:15 +0200 | [diff] [blame] | 264 | return false; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 265 | |
| 266 | nla_put_failure: |
Sergey Popovich | 728a7e6 | 2015-05-02 19:28:15 +0200 | [diff] [blame] | 267 | return true; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 268 | } |
| 269 | |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 270 | static inline void |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 271 | hash_net6_data_next(struct hash_net4_elem *next, |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 272 | const struct hash_net6_elem *d) |
| 273 | { |
| 274 | } |
| 275 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 276 | #undef MTYPE |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 277 | #undef HOST_MASK |
| 278 | |
| 279 | #define MTYPE hash_net6 |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 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 | f690cba | 2015-06-12 22:11:00 +0200 | [diff] [blame] | 292 | .cidr = 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 | |
Sergey Popovich | a212e08 | 2015-06-12 21:26:43 +0200 | [diff] [blame] | 316 | if (tb[IPSET_ATTR_LINENO]) |
| 317 | *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); |
| 318 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 319 | if (unlikely(!tb[IPSET_ATTR_IP] || |
Sergey Popovich | 7dd37bc | 2015-06-12 21:14:09 +0200 | [diff] [blame] | 320 | !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS))) |
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 | |
Sergey Popovich | 8e55d2e | 2015-05-02 19:28:07 +0200 | [diff] [blame] | 325 | ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip); |
| 326 | if (ret) |
| 327 | return ret; |
| 328 | |
| 329 | ret = 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 | |
Sergey Popovich | aff2275 | 2015-06-12 21:30:57 +0200 | [diff] [blame] | 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]); |
Sergey Popovich | aff2275 | 2015-06-12 21:30:57 +0200 | [diff] [blame] | 335 | if (!e.cidr || e.cidr > HOST_MASK) |
| 336 | return -IPSET_ERR_INVALID_CIDR; |
| 337 | } |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 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]); |
Jozsef Kadlecsik | ca0f6a5 | 2015-06-13 19:45:33 +0200 | [diff] [blame] | 343 | |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 344 | if (cadt_flags & IPSET_FLAG_NOMATCH) |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 345 | flags |= (IPSET_FLAG_NOMATCH << 16); |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 346 | } |
| 347 | |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 348 | ret = adtfn(set, &e, &ext, &ext, flags); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 349 | |
Jozsef Kadlecsik | 0f1799b | 2013-09-16 20:04:53 +0200 | [diff] [blame] | 350 | return ip_set_enomatch(ret, flags, adt, set) ? -ret : |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 351 | ip_set_eexist(ret, flags) ? 0 : ret; |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 352 | } |
| 353 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 354 | static struct ip_set_type hash_net_type __read_mostly = { |
| 355 | .name = "hash:net", |
| 356 | .protocol = IPSET_PROTOCOL, |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 357 | .features = IPSET_TYPE_IP | IPSET_TYPE_NOMATCH, |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 358 | .dimension = IPSET_DIM_ONE, |
Jan Engelhardt | c15f1c8 | 2012-02-14 00:24:10 +0100 | [diff] [blame] | 359 | .family = NFPROTO_UNSPEC, |
Jozsef Kadlecsik | 35b8dcf | 2013-04-30 23:02:43 +0200 | [diff] [blame] | 360 | .revision_min = IPSET_TYPE_REV_MIN, |
| 361 | .revision_max = IPSET_TYPE_REV_MAX, |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 362 | .create = hash_net_create, |
| 363 | .create_policy = { |
| 364 | [IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 }, |
| 365 | [IPSET_ATTR_MAXELEM] = { .type = NLA_U32 }, |
| 366 | [IPSET_ATTR_PROBES] = { .type = NLA_U8 }, |
| 367 | [IPSET_ATTR_RESIZE] = { .type = NLA_U8 }, |
| 368 | [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, |
Jozsef Kadlecsik | 5d50e1d8 | 2013-04-08 22:50:55 +0200 | [diff] [blame] | 369 | [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 }, |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 370 | }, |
| 371 | .adt_policy = { |
| 372 | [IPSET_ATTR_IP] = { .type = NLA_NESTED }, |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 373 | [IPSET_ATTR_IP_TO] = { .type = NLA_NESTED }, |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 374 | [IPSET_ATTR_CIDR] = { .type = NLA_U8 }, |
| 375 | [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 376 | [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 }, |
Jozsef Kadlecsik | 00d71b2 | 2013-04-08 23:11:02 +0200 | [diff] [blame] | 377 | [IPSET_ATTR_BYTES] = { .type = NLA_U64 }, |
| 378 | [IPSET_ATTR_PACKETS] = { .type = NLA_U64 }, |
Sergey Popovich | 0372618 | 2015-05-02 19:28:16 +0200 | [diff] [blame] | 379 | [IPSET_ATTR_COMMENT] = { .type = NLA_NUL_STRING, |
| 380 | .len = IPSET_MAX_COMMENT_SIZE }, |
Anton Danilov | af33141 | 2014-08-28 10:11:29 +0400 | [diff] [blame] | 381 | [IPSET_ATTR_SKBMARK] = { .type = NLA_U64 }, |
| 382 | [IPSET_ATTR_SKBPRIO] = { .type = NLA_U32 }, |
| 383 | [IPSET_ATTR_SKBQUEUE] = { .type = NLA_U16 }, |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 384 | }, |
| 385 | .me = THIS_MODULE, |
| 386 | }; |
| 387 | |
| 388 | static int __init |
| 389 | hash_net_init(void) |
| 390 | { |
| 391 | return ip_set_type_register(&hash_net_type); |
| 392 | } |
| 393 | |
| 394 | static void __exit |
| 395 | hash_net_fini(void) |
| 396 | { |
Jozsef Kadlecsik | 18f84d4 | 2015-06-13 17:29:56 +0200 | [diff] [blame] | 397 | rcu_barrier(); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 398 | ip_set_type_unregister(&hash_net_type); |
| 399 | } |
| 400 | |
| 401 | module_init(hash_net_init); |
| 402 | module_exit(hash_net_fini); |