Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 1 | /* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu> |
| 2 | * Patrick Schaaf <bof@bof.de> |
| 3 | * Martin Josefsson <gandalf@wlug.westbo.se> |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 4 | * Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | |
| 11 | /* Kernel module which implements the set match and SET target |
| 12 | * for netfilter/iptables. */ |
| 13 | |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/skbuff.h> |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 16 | |
| 17 | #include <linux/netfilter/x_tables.h> |
| 18 | #include <linux/netfilter/xt_set.h> |
Jozsef Kadlecsik | a73f89a | 2012-06-29 09:42:28 +0000 | [diff] [blame] | 19 | #include <linux/netfilter/ipset/ip_set_timeout.h> |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 20 | |
| 21 | MODULE_LICENSE("GPL"); |
| 22 | MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); |
| 23 | MODULE_DESCRIPTION("Xtables: IP set match and target module"); |
| 24 | MODULE_ALIAS("xt_SET"); |
| 25 | MODULE_ALIAS("ipt_set"); |
| 26 | MODULE_ALIAS("ip6t_set"); |
| 27 | MODULE_ALIAS("ipt_SET"); |
| 28 | MODULE_ALIAS("ip6t_SET"); |
| 29 | |
| 30 | static inline int |
| 31 | match_set(ip_set_id_t index, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 32 | const struct xt_action_param *par, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 33 | struct ip_set_adt_opt *opt, int inv) |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 34 | { |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 35 | if (ip_set_test(index, skb, par, opt)) |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 36 | inv = !inv; |
| 37 | return inv; |
| 38 | } |
| 39 | |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 40 | #define ADT_OPT(n, f, d, fs, cfs, t) \ |
Jozsef Kadlecsik | 127f559 | 2012-05-07 02:35:44 +0000 | [diff] [blame] | 41 | struct ip_set_adt_opt n = { \ |
| 42 | .family = f, \ |
| 43 | .dim = d, \ |
| 44 | .flags = fs, \ |
| 45 | .cmdflags = cfs, \ |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 46 | .ext.timeout = t, \ |
Jozsef Kadlecsik | 127f559 | 2012-05-07 02:35:44 +0000 | [diff] [blame] | 47 | } |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 48 | |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 49 | /* Revision 0 interface: backward compatible with netfilter/iptables */ |
| 50 | |
| 51 | static bool |
| 52 | set_match_v0(const struct sk_buff *skb, struct xt_action_param *par) |
| 53 | { |
| 54 | const struct xt_set_info_match_v0 *info = par->matchinfo; |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 55 | ADT_OPT(opt, par->family, info->match_set.u.compat.dim, |
| 56 | info->match_set.u.compat.flags, 0, UINT_MAX); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 57 | |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 58 | return match_set(info->match_set.index, skb, par, &opt, |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 59 | info->match_set.u.compat.flags & IPSET_INV_MATCH); |
| 60 | } |
| 61 | |
| 62 | static void |
| 63 | compat_flags(struct xt_set_info_v0 *info) |
| 64 | { |
| 65 | u_int8_t i; |
| 66 | |
| 67 | /* Fill out compatibility data according to enum ip_set_kopt */ |
| 68 | info->u.compat.dim = IPSET_DIM_ZERO; |
| 69 | if (info->u.flags[0] & IPSET_MATCH_INV) |
| 70 | info->u.compat.flags |= IPSET_INV_MATCH; |
| 71 | for (i = 0; i < IPSET_DIM_MAX-1 && info->u.flags[i]; i++) { |
| 72 | info->u.compat.dim++; |
| 73 | if (info->u.flags[i] & IPSET_SRC) |
| 74 | info->u.compat.flags |= (1<<info->u.compat.dim); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | static int |
| 79 | set_match_v0_checkentry(const struct xt_mtchk_param *par) |
| 80 | { |
| 81 | struct xt_set_info_match_v0 *info = par->matchinfo; |
| 82 | ip_set_id_t index; |
| 83 | |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 84 | index = ip_set_nfnl_get_byindex(par->net, info->match_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 85 | |
| 86 | if (index == IPSET_INVALID_ID) { |
Maxime Jayat | 3f79410 | 2013-10-12 01:29:46 +0200 | [diff] [blame] | 87 | pr_warning("Cannot find set identified by id %u to match\n", |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 88 | info->match_set.index); |
| 89 | return -ENOENT; |
| 90 | } |
| 91 | if (info->match_set.u.flags[IPSET_DIM_MAX-1] != 0) { |
| 92 | pr_warning("Protocol error: set match dimension " |
| 93 | "is over the limit!\n"); |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 94 | ip_set_nfnl_put(par->net, info->match_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 95 | return -ERANGE; |
| 96 | } |
| 97 | |
| 98 | /* Fill out compatibility data */ |
| 99 | compat_flags(&info->match_set); |
| 100 | |
| 101 | return 0; |
| 102 | } |
| 103 | |
| 104 | static void |
| 105 | set_match_v0_destroy(const struct xt_mtdtor_param *par) |
| 106 | { |
| 107 | struct xt_set_info_match_v0 *info = par->matchinfo; |
| 108 | |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 109 | ip_set_nfnl_put(par->net, info->match_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 110 | } |
| 111 | |
Jozsef Kadlecsik | bd3129f | 2013-09-30 07:49:47 +0200 | [diff] [blame] | 112 | /* Revision 1 match */ |
| 113 | |
| 114 | static bool |
| 115 | set_match_v1(const struct sk_buff *skb, struct xt_action_param *par) |
| 116 | { |
| 117 | const struct xt_set_info_match_v1 *info = par->matchinfo; |
| 118 | ADT_OPT(opt, par->family, info->match_set.dim, |
| 119 | info->match_set.flags, 0, UINT_MAX); |
| 120 | |
| 121 | if (opt.flags & IPSET_RETURN_NOMATCH) |
| 122 | opt.cmdflags |= IPSET_FLAG_RETURN_NOMATCH; |
| 123 | |
| 124 | return match_set(info->match_set.index, skb, par, &opt, |
| 125 | info->match_set.flags & IPSET_INV_MATCH); |
| 126 | } |
| 127 | |
| 128 | static int |
| 129 | set_match_v1_checkentry(const struct xt_mtchk_param *par) |
| 130 | { |
| 131 | struct xt_set_info_match_v1 *info = par->matchinfo; |
| 132 | ip_set_id_t index; |
| 133 | |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 134 | index = ip_set_nfnl_get_byindex(par->net, info->match_set.index); |
Jozsef Kadlecsik | bd3129f | 2013-09-30 07:49:47 +0200 | [diff] [blame] | 135 | |
| 136 | if (index == IPSET_INVALID_ID) { |
Maxime Jayat | 3f79410 | 2013-10-12 01:29:46 +0200 | [diff] [blame] | 137 | pr_warning("Cannot find set identified by id %u to match\n", |
Jozsef Kadlecsik | bd3129f | 2013-09-30 07:49:47 +0200 | [diff] [blame] | 138 | info->match_set.index); |
| 139 | return -ENOENT; |
| 140 | } |
| 141 | if (info->match_set.dim > IPSET_DIM_MAX) { |
| 142 | pr_warning("Protocol error: set match dimension " |
| 143 | "is over the limit!\n"); |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 144 | ip_set_nfnl_put(par->net, info->match_set.index); |
Jozsef Kadlecsik | bd3129f | 2013-09-30 07:49:47 +0200 | [diff] [blame] | 145 | return -ERANGE; |
| 146 | } |
| 147 | |
| 148 | return 0; |
| 149 | } |
| 150 | |
| 151 | static void |
| 152 | set_match_v1_destroy(const struct xt_mtdtor_param *par) |
| 153 | { |
| 154 | struct xt_set_info_match_v1 *info = par->matchinfo; |
| 155 | |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 156 | ip_set_nfnl_put(par->net, info->match_set.index); |
Jozsef Kadlecsik | bd3129f | 2013-09-30 07:49:47 +0200 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | /* Revision 3 match */ |
| 160 | |
| 161 | static bool |
| 162 | match_counter(u64 counter, const struct ip_set_counter_match *info) |
| 163 | { |
| 164 | switch (info->op) { |
| 165 | case IPSET_COUNTER_NONE: |
| 166 | return true; |
| 167 | case IPSET_COUNTER_EQ: |
| 168 | return counter == info->value; |
| 169 | case IPSET_COUNTER_NE: |
| 170 | return counter != info->value; |
| 171 | case IPSET_COUNTER_LT: |
| 172 | return counter < info->value; |
| 173 | case IPSET_COUNTER_GT: |
| 174 | return counter > info->value; |
| 175 | } |
| 176 | return false; |
| 177 | } |
| 178 | |
| 179 | static bool |
| 180 | set_match_v3(const struct sk_buff *skb, struct xt_action_param *par) |
| 181 | { |
| 182 | const struct xt_set_info_match_v3 *info = par->matchinfo; |
| 183 | ADT_OPT(opt, par->family, info->match_set.dim, |
| 184 | info->match_set.flags, info->flags, UINT_MAX); |
| 185 | int ret; |
| 186 | |
| 187 | if (info->packets.op != IPSET_COUNTER_NONE || |
| 188 | info->bytes.op != IPSET_COUNTER_NONE) |
| 189 | opt.cmdflags |= IPSET_FLAG_MATCH_COUNTERS; |
| 190 | |
| 191 | ret = match_set(info->match_set.index, skb, par, &opt, |
| 192 | info->match_set.flags & IPSET_INV_MATCH); |
| 193 | |
| 194 | if (!(ret && opt.cmdflags & IPSET_FLAG_MATCH_COUNTERS)) |
| 195 | return ret; |
| 196 | |
| 197 | if (!match_counter(opt.ext.packets, &info->packets)) |
| 198 | return 0; |
| 199 | return match_counter(opt.ext.bytes, &info->bytes); |
| 200 | } |
| 201 | |
| 202 | #define set_match_v3_checkentry set_match_v1_checkentry |
| 203 | #define set_match_v3_destroy set_match_v1_destroy |
| 204 | |
| 205 | /* Revision 0 interface: backward compatible with netfilter/iptables */ |
| 206 | |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 207 | static unsigned int |
| 208 | set_target_v0(struct sk_buff *skb, const struct xt_action_param *par) |
| 209 | { |
| 210 | const struct xt_set_info_target_v0 *info = par->targinfo; |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 211 | ADT_OPT(add_opt, par->family, info->add_set.u.compat.dim, |
| 212 | info->add_set.u.compat.flags, 0, UINT_MAX); |
| 213 | ADT_OPT(del_opt, par->family, info->del_set.u.compat.dim, |
| 214 | info->del_set.u.compat.flags, 0, UINT_MAX); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 215 | |
| 216 | if (info->add_set.index != IPSET_INVALID_ID) |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 217 | ip_set_add(info->add_set.index, skb, par, &add_opt); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 218 | if (info->del_set.index != IPSET_INVALID_ID) |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 219 | ip_set_del(info->del_set.index, skb, par, &del_opt); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 220 | |
| 221 | return XT_CONTINUE; |
| 222 | } |
| 223 | |
| 224 | static int |
| 225 | set_target_v0_checkentry(const struct xt_tgchk_param *par) |
| 226 | { |
| 227 | struct xt_set_info_target_v0 *info = par->targinfo; |
| 228 | ip_set_id_t index; |
| 229 | |
| 230 | if (info->add_set.index != IPSET_INVALID_ID) { |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 231 | index = ip_set_nfnl_get_byindex(par->net, info->add_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 232 | if (index == IPSET_INVALID_ID) { |
| 233 | pr_warning("Cannot find add_set index %u as target\n", |
| 234 | info->add_set.index); |
| 235 | return -ENOENT; |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | if (info->del_set.index != IPSET_INVALID_ID) { |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 240 | index = ip_set_nfnl_get_byindex(par->net, info->del_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 241 | if (index == IPSET_INVALID_ID) { |
| 242 | pr_warning("Cannot find del_set index %u as target\n", |
| 243 | info->del_set.index); |
Jozsef Kadlecsik | eafbd3f | 2011-04-13 13:45:57 +0200 | [diff] [blame] | 244 | if (info->add_set.index != IPSET_INVALID_ID) |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 245 | ip_set_nfnl_put(par->net, info->add_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 246 | return -ENOENT; |
| 247 | } |
| 248 | } |
| 249 | if (info->add_set.u.flags[IPSET_DIM_MAX-1] != 0 || |
| 250 | info->del_set.u.flags[IPSET_DIM_MAX-1] != 0) { |
| 251 | pr_warning("Protocol error: SET target dimension " |
| 252 | "is over the limit!\n"); |
Jozsef Kadlecsik | eafbd3f | 2011-04-13 13:45:57 +0200 | [diff] [blame] | 253 | if (info->add_set.index != IPSET_INVALID_ID) |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 254 | ip_set_nfnl_put(par->net, info->add_set.index); |
Jozsef Kadlecsik | eafbd3f | 2011-04-13 13:45:57 +0200 | [diff] [blame] | 255 | if (info->del_set.index != IPSET_INVALID_ID) |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 256 | ip_set_nfnl_put(par->net, info->del_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 257 | return -ERANGE; |
| 258 | } |
| 259 | |
| 260 | /* Fill out compatibility data */ |
| 261 | compat_flags(&info->add_set); |
| 262 | compat_flags(&info->del_set); |
| 263 | |
| 264 | return 0; |
| 265 | } |
| 266 | |
| 267 | static void |
| 268 | set_target_v0_destroy(const struct xt_tgdtor_param *par) |
| 269 | { |
| 270 | const struct xt_set_info_target_v0 *info = par->targinfo; |
| 271 | |
| 272 | if (info->add_set.index != IPSET_INVALID_ID) |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 273 | ip_set_nfnl_put(par->net, info->add_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 274 | if (info->del_set.index != IPSET_INVALID_ID) |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 275 | ip_set_nfnl_put(par->net, info->del_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 276 | } |
| 277 | |
Jozsef Kadlecsik | bd3129f | 2013-09-30 07:49:47 +0200 | [diff] [blame] | 278 | /* Revision 1 target */ |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 279 | |
| 280 | static unsigned int |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 281 | set_target_v1(struct sk_buff *skb, const struct xt_action_param *par) |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 282 | { |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 283 | const struct xt_set_info_target_v1 *info = par->targinfo; |
| 284 | ADT_OPT(add_opt, par->family, info->add_set.dim, |
| 285 | info->add_set.flags, 0, UINT_MAX); |
| 286 | ADT_OPT(del_opt, par->family, info->del_set.dim, |
| 287 | info->del_set.flags, 0, UINT_MAX); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 288 | |
| 289 | if (info->add_set.index != IPSET_INVALID_ID) |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 290 | ip_set_add(info->add_set.index, skb, par, &add_opt); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 291 | if (info->del_set.index != IPSET_INVALID_ID) |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 292 | ip_set_del(info->del_set.index, skb, par, &del_opt); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 293 | |
| 294 | return XT_CONTINUE; |
| 295 | } |
| 296 | |
| 297 | static int |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 298 | set_target_v1_checkentry(const struct xt_tgchk_param *par) |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 299 | { |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 300 | const struct xt_set_info_target_v1 *info = par->targinfo; |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 301 | ip_set_id_t index; |
| 302 | |
| 303 | if (info->add_set.index != IPSET_INVALID_ID) { |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 304 | index = ip_set_nfnl_get_byindex(par->net, info->add_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 305 | if (index == IPSET_INVALID_ID) { |
| 306 | pr_warning("Cannot find add_set index %u as target\n", |
| 307 | info->add_set.index); |
| 308 | return -ENOENT; |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | if (info->del_set.index != IPSET_INVALID_ID) { |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 313 | index = ip_set_nfnl_get_byindex(par->net, info->del_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 314 | if (index == IPSET_INVALID_ID) { |
| 315 | pr_warning("Cannot find del_set index %u as target\n", |
| 316 | info->del_set.index); |
Jozsef Kadlecsik | eafbd3f | 2011-04-13 13:45:57 +0200 | [diff] [blame] | 317 | if (info->add_set.index != IPSET_INVALID_ID) |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 318 | ip_set_nfnl_put(par->net, info->add_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 319 | return -ENOENT; |
| 320 | } |
| 321 | } |
| 322 | if (info->add_set.dim > IPSET_DIM_MAX || |
Jozsef Kadlecsik | eafbd3f | 2011-04-13 13:45:57 +0200 | [diff] [blame] | 323 | info->del_set.dim > IPSET_DIM_MAX) { |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 324 | pr_warning("Protocol error: SET target dimension " |
| 325 | "is over the limit!\n"); |
Jozsef Kadlecsik | eafbd3f | 2011-04-13 13:45:57 +0200 | [diff] [blame] | 326 | if (info->add_set.index != IPSET_INVALID_ID) |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 327 | ip_set_nfnl_put(par->net, info->add_set.index); |
Jozsef Kadlecsik | eafbd3f | 2011-04-13 13:45:57 +0200 | [diff] [blame] | 328 | if (info->del_set.index != IPSET_INVALID_ID) |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 329 | ip_set_nfnl_put(par->net, info->del_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 330 | return -ERANGE; |
| 331 | } |
| 332 | |
| 333 | return 0; |
| 334 | } |
| 335 | |
| 336 | static void |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 337 | set_target_v1_destroy(const struct xt_tgdtor_param *par) |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 338 | { |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 339 | const struct xt_set_info_target_v1 *info = par->targinfo; |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 340 | |
| 341 | if (info->add_set.index != IPSET_INVALID_ID) |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 342 | ip_set_nfnl_put(par->net, info->add_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 343 | if (info->del_set.index != IPSET_INVALID_ID) |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 344 | ip_set_nfnl_put(par->net, info->del_set.index); |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 345 | } |
| 346 | |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 347 | /* Revision 2 target */ |
| 348 | |
| 349 | static unsigned int |
| 350 | set_target_v2(struct sk_buff *skb, const struct xt_action_param *par) |
| 351 | { |
| 352 | const struct xt_set_info_target_v2 *info = par->targinfo; |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 353 | ADT_OPT(add_opt, par->family, info->add_set.dim, |
| 354 | info->add_set.flags, info->flags, info->timeout); |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 355 | ADT_OPT(del_opt, par->family, info->del_set.dim, |
| 356 | info->del_set.flags, 0, UINT_MAX); |
| 357 | |
Jozsef Kadlecsik | 127f559 | 2012-05-07 02:35:44 +0000 | [diff] [blame] | 358 | /* Normalize to fit into jiffies */ |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 359 | if (add_opt.ext.timeout != IPSET_NO_TIMEOUT && |
| 360 | add_opt.ext.timeout > UINT_MAX/MSEC_PER_SEC) |
| 361 | add_opt.ext.timeout = UINT_MAX/MSEC_PER_SEC; |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 362 | if (info->add_set.index != IPSET_INVALID_ID) |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 363 | ip_set_add(info->add_set.index, skb, par, &add_opt); |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 364 | if (info->del_set.index != IPSET_INVALID_ID) |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 365 | ip_set_del(info->del_set.index, skb, par, &del_opt); |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 366 | |
| 367 | return XT_CONTINUE; |
| 368 | } |
| 369 | |
| 370 | #define set_target_v2_checkentry set_target_v1_checkentry |
| 371 | #define set_target_v2_destroy set_target_v1_destroy |
| 372 | |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 373 | static struct xt_match set_matches[] __read_mostly = { |
| 374 | { |
| 375 | .name = "set", |
| 376 | .family = NFPROTO_IPV4, |
| 377 | .revision = 0, |
| 378 | .match = set_match_v0, |
| 379 | .matchsize = sizeof(struct xt_set_info_match_v0), |
| 380 | .checkentry = set_match_v0_checkentry, |
| 381 | .destroy = set_match_v0_destroy, |
| 382 | .me = THIS_MODULE |
| 383 | }, |
| 384 | { |
| 385 | .name = "set", |
| 386 | .family = NFPROTO_IPV4, |
| 387 | .revision = 1, |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 388 | .match = set_match_v1, |
| 389 | .matchsize = sizeof(struct xt_set_info_match_v1), |
| 390 | .checkentry = set_match_v1_checkentry, |
| 391 | .destroy = set_match_v1_destroy, |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 392 | .me = THIS_MODULE |
| 393 | }, |
| 394 | { |
| 395 | .name = "set", |
| 396 | .family = NFPROTO_IPV6, |
| 397 | .revision = 1, |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 398 | .match = set_match_v1, |
| 399 | .matchsize = sizeof(struct xt_set_info_match_v1), |
| 400 | .checkentry = set_match_v1_checkentry, |
| 401 | .destroy = set_match_v1_destroy, |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 402 | .me = THIS_MODULE |
| 403 | }, |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 404 | /* --return-nomatch flag support */ |
| 405 | { |
| 406 | .name = "set", |
| 407 | .family = NFPROTO_IPV4, |
| 408 | .revision = 2, |
| 409 | .match = set_match_v1, |
| 410 | .matchsize = sizeof(struct xt_set_info_match_v1), |
| 411 | .checkentry = set_match_v1_checkentry, |
| 412 | .destroy = set_match_v1_destroy, |
| 413 | .me = THIS_MODULE |
| 414 | }, |
| 415 | { |
| 416 | .name = "set", |
| 417 | .family = NFPROTO_IPV6, |
| 418 | .revision = 2, |
| 419 | .match = set_match_v1, |
| 420 | .matchsize = sizeof(struct xt_set_info_match_v1), |
| 421 | .checkentry = set_match_v1_checkentry, |
| 422 | .destroy = set_match_v1_destroy, |
| 423 | .me = THIS_MODULE |
| 424 | }, |
Jozsef Kadlecsik | 6e01781 | 2013-04-27 14:40:50 +0200 | [diff] [blame] | 425 | /* counters support: update, match */ |
| 426 | { |
| 427 | .name = "set", |
| 428 | .family = NFPROTO_IPV4, |
| 429 | .revision = 3, |
| 430 | .match = set_match_v3, |
| 431 | .matchsize = sizeof(struct xt_set_info_match_v3), |
| 432 | .checkentry = set_match_v3_checkentry, |
| 433 | .destroy = set_match_v3_destroy, |
| 434 | .me = THIS_MODULE |
| 435 | }, |
| 436 | { |
| 437 | .name = "set", |
| 438 | .family = NFPROTO_IPV6, |
| 439 | .revision = 3, |
| 440 | .match = set_match_v3, |
| 441 | .matchsize = sizeof(struct xt_set_info_match_v3), |
| 442 | .checkentry = set_match_v3_checkentry, |
| 443 | .destroy = set_match_v3_destroy, |
| 444 | .me = THIS_MODULE |
| 445 | }, |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 446 | }; |
| 447 | |
| 448 | static struct xt_target set_targets[] __read_mostly = { |
| 449 | { |
| 450 | .name = "SET", |
| 451 | .revision = 0, |
| 452 | .family = NFPROTO_IPV4, |
| 453 | .target = set_target_v0, |
| 454 | .targetsize = sizeof(struct xt_set_info_target_v0), |
| 455 | .checkentry = set_target_v0_checkentry, |
| 456 | .destroy = set_target_v0_destroy, |
| 457 | .me = THIS_MODULE |
| 458 | }, |
| 459 | { |
| 460 | .name = "SET", |
| 461 | .revision = 1, |
| 462 | .family = NFPROTO_IPV4, |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 463 | .target = set_target_v1, |
| 464 | .targetsize = sizeof(struct xt_set_info_target_v1), |
| 465 | .checkentry = set_target_v1_checkentry, |
| 466 | .destroy = set_target_v1_destroy, |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 467 | .me = THIS_MODULE |
| 468 | }, |
| 469 | { |
| 470 | .name = "SET", |
| 471 | .revision = 1, |
| 472 | .family = NFPROTO_IPV6, |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 473 | .target = set_target_v1, |
| 474 | .targetsize = sizeof(struct xt_set_info_target_v1), |
| 475 | .checkentry = set_target_v1_checkentry, |
| 476 | .destroy = set_target_v1_destroy, |
| 477 | .me = THIS_MODULE |
| 478 | }, |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 479 | /* --timeout and --exist flags support */ |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 480 | { |
| 481 | .name = "SET", |
| 482 | .revision = 2, |
| 483 | .family = NFPROTO_IPV4, |
| 484 | .target = set_target_v2, |
| 485 | .targetsize = sizeof(struct xt_set_info_target_v2), |
| 486 | .checkentry = set_target_v2_checkentry, |
| 487 | .destroy = set_target_v2_destroy, |
| 488 | .me = THIS_MODULE |
| 489 | }, |
| 490 | { |
| 491 | .name = "SET", |
| 492 | .revision = 2, |
| 493 | .family = NFPROTO_IPV6, |
| 494 | .target = set_target_v2, |
| 495 | .targetsize = sizeof(struct xt_set_info_target_v2), |
| 496 | .checkentry = set_target_v2_checkentry, |
| 497 | .destroy = set_target_v2_destroy, |
Jozsef Kadlecsik | d956798 | 2011-02-01 15:56:00 +0100 | [diff] [blame] | 498 | .me = THIS_MODULE |
| 499 | }, |
| 500 | }; |
| 501 | |
| 502 | static int __init xt_set_init(void) |
| 503 | { |
| 504 | int ret = xt_register_matches(set_matches, ARRAY_SIZE(set_matches)); |
| 505 | |
| 506 | if (!ret) { |
| 507 | ret = xt_register_targets(set_targets, |
| 508 | ARRAY_SIZE(set_targets)); |
| 509 | if (ret) |
| 510 | xt_unregister_matches(set_matches, |
| 511 | ARRAY_SIZE(set_matches)); |
| 512 | } |
| 513 | return ret; |
| 514 | } |
| 515 | |
| 516 | static void __exit xt_set_fini(void) |
| 517 | { |
| 518 | xt_unregister_matches(set_matches, ARRAY_SIZE(set_matches)); |
| 519 | xt_unregister_targets(set_targets, ARRAY_SIZE(set_targets)); |
| 520 | } |
| 521 | |
| 522 | module_init(xt_set_init); |
| 523 | module_exit(xt_set_fini); |