Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +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 | a7b4f98 | 2011-02-01 15:28:35 +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 | */ |
David Howells | a820141 | 2012-10-09 09:48:55 +0100 | [diff] [blame] | 10 | #ifndef _IP_SET_H |
| 11 | #define _IP_SET_H |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 12 | |
Jan Engelhardt | ae8ded1 | 2012-01-14 16:26:20 +0100 | [diff] [blame] | 13 | #include <linux/ip.h> |
| 14 | #include <linux/ipv6.h> |
| 15 | #include <linux/netlink.h> |
| 16 | #include <linux/netfilter.h> |
| 17 | #include <linux/netfilter/x_tables.h> |
Jozsef Kadlecsik | 10111a6 | 2012-09-21 21:59:32 +0200 | [diff] [blame] | 18 | #include <linux/stringify.h> |
Jan Engelhardt | ae8ded1 | 2012-01-14 16:26:20 +0100 | [diff] [blame] | 19 | #include <linux/vmalloc.h> |
| 20 | #include <net/netlink.h> |
David Howells | a820141 | 2012-10-09 09:48:55 +0100 | [diff] [blame] | 21 | #include <uapi/linux/netfilter/ipset/ip_set.h> |
Jan Engelhardt | ae8ded1 | 2012-01-14 16:26:20 +0100 | [diff] [blame] | 22 | |
Jozsef Kadlecsik | 10111a6 | 2012-09-21 21:59:32 +0200 | [diff] [blame] | 23 | #define _IP_SET_MODULE_DESC(a, b, c) \ |
| 24 | MODULE_DESCRIPTION(a " type of IP sets, revisions " b "-" c) |
| 25 | #define IP_SET_MODULE_DESC(a, b, c) \ |
| 26 | _IP_SET_MODULE_DESC(a, __stringify(b), __stringify(c)) |
| 27 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 28 | /* Set features */ |
| 29 | enum ip_set_feature { |
| 30 | IPSET_TYPE_IP_FLAG = 0, |
| 31 | IPSET_TYPE_IP = (1 << IPSET_TYPE_IP_FLAG), |
| 32 | IPSET_TYPE_PORT_FLAG = 1, |
| 33 | IPSET_TYPE_PORT = (1 << IPSET_TYPE_PORT_FLAG), |
| 34 | IPSET_TYPE_MAC_FLAG = 2, |
| 35 | IPSET_TYPE_MAC = (1 << IPSET_TYPE_MAC_FLAG), |
| 36 | IPSET_TYPE_IP2_FLAG = 3, |
| 37 | IPSET_TYPE_IP2 = (1 << IPSET_TYPE_IP2_FLAG), |
| 38 | IPSET_TYPE_NAME_FLAG = 4, |
| 39 | IPSET_TYPE_NAME = (1 << IPSET_TYPE_NAME_FLAG), |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 40 | IPSET_TYPE_IFACE_FLAG = 5, |
| 41 | IPSET_TYPE_IFACE = (1 << IPSET_TYPE_IFACE_FLAG), |
Vytas Dauksa | 3b02b56 | 2013-12-17 14:01:43 +0000 | [diff] [blame] | 42 | IPSET_TYPE_MARK_FLAG = 6, |
| 43 | IPSET_TYPE_MARK = (1 << IPSET_TYPE_MARK_FLAG), |
| 44 | IPSET_TYPE_NOMATCH_FLAG = 7, |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 45 | IPSET_TYPE_NOMATCH = (1 << IPSET_TYPE_NOMATCH_FLAG), |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 46 | /* Strictly speaking not a feature, but a flag for dumping: |
| 47 | * this settype must be dumped last */ |
Vytas Dauksa | 3b02b56 | 2013-12-17 14:01:43 +0000 | [diff] [blame] | 48 | IPSET_DUMP_LAST_FLAG = 8, |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 49 | IPSET_DUMP_LAST = (1 << IPSET_DUMP_LAST_FLAG), |
| 50 | }; |
| 51 | |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 52 | /* Set extensions */ |
| 53 | enum ip_set_extension { |
Jozsef Kadlecsik | 40cd63b | 2013-09-09 14:44:29 +0200 | [diff] [blame] | 54 | IPSET_EXT_BIT_TIMEOUT = 0, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 55 | IPSET_EXT_TIMEOUT = (1 << IPSET_EXT_BIT_TIMEOUT), |
Jozsef Kadlecsik | 40cd63b | 2013-09-09 14:44:29 +0200 | [diff] [blame] | 56 | IPSET_EXT_BIT_COUNTER = 1, |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 57 | IPSET_EXT_COUNTER = (1 << IPSET_EXT_BIT_COUNTER), |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 58 | IPSET_EXT_BIT_COMMENT = 2, |
| 59 | IPSET_EXT_COMMENT = (1 << IPSET_EXT_BIT_COMMENT), |
Anton Danilov | 0e9871e | 2014-08-28 10:11:27 +0400 | [diff] [blame] | 60 | IPSET_EXT_BIT_SKBINFO = 3, |
| 61 | IPSET_EXT_SKBINFO = (1 << IPSET_EXT_BIT_SKBINFO), |
Jozsef Kadlecsik | 40cd63b | 2013-09-09 14:44:29 +0200 | [diff] [blame] | 62 | /* Mark set with an extension which needs to call destroy */ |
| 63 | IPSET_EXT_BIT_DESTROY = 7, |
| 64 | IPSET_EXT_DESTROY = (1 << IPSET_EXT_BIT_DESTROY), |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 65 | }; |
| 66 | |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 67 | #define SET_WITH_TIMEOUT(s) ((s)->extensions & IPSET_EXT_TIMEOUT) |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 68 | #define SET_WITH_COUNTER(s) ((s)->extensions & IPSET_EXT_COUNTER) |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 69 | #define SET_WITH_COMMENT(s) ((s)->extensions & IPSET_EXT_COMMENT) |
Anton Danilov | 0e9871e | 2014-08-28 10:11:27 +0400 | [diff] [blame] | 70 | #define SET_WITH_SKBINFO(s) ((s)->extensions & IPSET_EXT_SKBINFO) |
Josh Hunt | 07cf8f5 | 2014-02-28 22:14:57 -0500 | [diff] [blame] | 71 | #define SET_WITH_FORCEADD(s) ((s)->flags & IPSET_CREATE_FLAG_FORCEADD) |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 72 | |
Jozsef Kadlecsik | f925f70 | 2013-09-06 22:31:40 +0200 | [diff] [blame] | 73 | /* Extension id, in size order */ |
| 74 | enum ip_set_ext_id { |
| 75 | IPSET_EXT_ID_COUNTER = 0, |
| 76 | IPSET_EXT_ID_TIMEOUT, |
Anton Danilov | 0e9871e | 2014-08-28 10:11:27 +0400 | [diff] [blame] | 77 | IPSET_EXT_ID_SKBINFO, |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 78 | IPSET_EXT_ID_COMMENT, |
Jozsef Kadlecsik | f925f70 | 2013-09-06 22:31:40 +0200 | [diff] [blame] | 79 | IPSET_EXT_ID_MAX, |
| 80 | }; |
| 81 | |
Jozsef Kadlecsik | 03c8b23 | 2013-09-07 00:43:52 +0200 | [diff] [blame] | 82 | /* Extension type */ |
| 83 | struct ip_set_ext_type { |
Jozsef Kadlecsik | 40cd63b | 2013-09-09 14:44:29 +0200 | [diff] [blame] | 84 | /* Destroy extension private data (can be NULL) */ |
| 85 | void (*destroy)(void *ext); |
Jozsef Kadlecsik | 03c8b23 | 2013-09-07 00:43:52 +0200 | [diff] [blame] | 86 | enum ip_set_extension type; |
| 87 | enum ipset_cadt_flags flag; |
| 88 | /* Size and minimal alignment */ |
| 89 | u8 len; |
| 90 | u8 align; |
| 91 | }; |
| 92 | |
| 93 | extern const struct ip_set_ext_type ip_set_extensions[]; |
| 94 | |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 95 | struct ip_set_ext { |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 96 | u64 packets; |
| 97 | u64 bytes; |
Jozsef Kadlecsik | f925f70 | 2013-09-06 22:31:40 +0200 | [diff] [blame] | 98 | u32 timeout; |
Anton Danilov | 0e9871e | 2014-08-28 10:11:27 +0400 | [diff] [blame] | 99 | u32 skbmark; |
| 100 | u32 skbmarkmask; |
| 101 | u32 skbprio; |
| 102 | u16 skbqueue; |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 103 | char *comment; |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 104 | }; |
| 105 | |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 106 | struct ip_set_counter { |
| 107 | atomic64_t bytes; |
| 108 | atomic64_t packets; |
| 109 | }; |
| 110 | |
Jozsef Kadlecsik | b57b2d1 | 2015-06-13 14:22:25 +0200 | [diff] [blame] | 111 | struct ip_set_comment_rcu { |
| 112 | struct rcu_head rcu; |
| 113 | char str[0]; |
| 114 | }; |
| 115 | |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 116 | struct ip_set_comment { |
Jozsef Kadlecsik | b57b2d1 | 2015-06-13 14:22:25 +0200 | [diff] [blame] | 117 | struct ip_set_comment_rcu __rcu *c; |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 118 | }; |
Jozsef Kadlecsik | 40cd63b | 2013-09-09 14:44:29 +0200 | [diff] [blame] | 119 | |
Anton Danilov | 0e9871e | 2014-08-28 10:11:27 +0400 | [diff] [blame] | 120 | struct ip_set_skbinfo { |
| 121 | u32 skbmark; |
| 122 | u32 skbmarkmask; |
| 123 | u32 skbprio; |
| 124 | u16 skbqueue; |
| 125 | }; |
| 126 | |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 127 | struct ip_set; |
Jozsef Kadlecsik | 40cd63b | 2013-09-09 14:44:29 +0200 | [diff] [blame] | 128 | |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 129 | #define ext_timeout(e, s) \ |
Sergey Popovich | 275e2bc | 2015-05-02 19:28:17 +0200 | [diff] [blame] | 130 | ((unsigned long *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_TIMEOUT])) |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 131 | #define ext_counter(e, s) \ |
Sergey Popovich | 275e2bc | 2015-05-02 19:28:17 +0200 | [diff] [blame] | 132 | ((struct ip_set_counter *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_COUNTER])) |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 133 | #define ext_comment(e, s) \ |
Sergey Popovich | 275e2bc | 2015-05-02 19:28:17 +0200 | [diff] [blame] | 134 | ((struct ip_set_comment *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_COMMENT])) |
Anton Danilov | 0e9871e | 2014-08-28 10:11:27 +0400 | [diff] [blame] | 135 | #define ext_skbinfo(e, s) \ |
Sergey Popovich | 275e2bc | 2015-05-02 19:28:17 +0200 | [diff] [blame] | 136 | ((struct ip_set_skbinfo *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_SKBINFO])) |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 137 | |
Jozsef Kadlecsik | 5416219 | 2011-06-16 18:40:55 +0200 | [diff] [blame] | 138 | typedef int (*ipset_adtfn)(struct ip_set *set, void *value, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 139 | const struct ip_set_ext *ext, |
Jozsef Kadlecsik | 6e01781 | 2013-04-27 14:40:50 +0200 | [diff] [blame] | 140 | struct ip_set_ext *mext, u32 cmdflags); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 141 | |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 142 | /* Kernel API function options */ |
| 143 | struct ip_set_adt_opt { |
| 144 | u8 family; /* Actual protocol family */ |
| 145 | u8 dim; /* Dimension of match/target */ |
| 146 | u8 flags; /* Direction and negation flags */ |
| 147 | u32 cmdflags; /* Command-like flags */ |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 148 | struct ip_set_ext ext; /* Extensions */ |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 149 | }; |
| 150 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 151 | /* Set type, variant-specific part */ |
| 152 | struct ip_set_type_variant { |
| 153 | /* Kernelspace: test/add/del entries |
| 154 | * returns negative error code, |
| 155 | * zero for no match/success to add/delete |
| 156 | * positive for matching element */ |
Jozsef Kadlecsik | 3ace95c | 2012-09-21 22:01:45 +0200 | [diff] [blame] | 157 | int (*kadt)(struct ip_set *set, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 158 | const struct xt_action_param *par, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 159 | enum ipset_adt adt, struct ip_set_adt_opt *opt); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 160 | |
| 161 | /* Userspace: test/add/del entries |
| 162 | * returns negative error code, |
| 163 | * zero for no match/success to add/delete |
| 164 | * positive for matching element */ |
| 165 | int (*uadt)(struct ip_set *set, struct nlattr *tb[], |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 166 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 167 | |
| 168 | /* Low level add/del/test functions */ |
| 169 | ipset_adtfn adt[IPSET_ADT_MAX]; |
| 170 | |
| 171 | /* When adding entries and set is full, try to resize the set */ |
| 172 | int (*resize)(struct ip_set *set, bool retried); |
| 173 | /* Destroy the set */ |
| 174 | void (*destroy)(struct ip_set *set); |
| 175 | /* Flush the elements */ |
| 176 | void (*flush)(struct ip_set *set); |
| 177 | /* Expire entries before listing */ |
| 178 | void (*expire)(struct ip_set *set); |
| 179 | /* List set header data */ |
| 180 | int (*head)(struct ip_set *set, struct sk_buff *skb); |
| 181 | /* List elements */ |
| 182 | int (*list)(const struct ip_set *set, struct sk_buff *skb, |
| 183 | struct netlink_callback *cb); |
Jozsef Kadlecsik | c4c9978 | 2015-06-13 11:59:45 +0200 | [diff] [blame] | 184 | /* Keep listing private when resizing runs parallel */ |
| 185 | void (*uref)(struct ip_set *set, struct netlink_callback *cb, |
| 186 | bool start); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 187 | |
| 188 | /* Return true if "b" set is the same as "a" |
| 189 | * according to the create set parameters */ |
| 190 | bool (*same_set)(const struct ip_set *a, const struct ip_set *b); |
| 191 | }; |
| 192 | |
| 193 | /* The core set type structure */ |
| 194 | struct ip_set_type { |
| 195 | struct list_head list; |
| 196 | |
| 197 | /* Typename */ |
| 198 | char name[IPSET_MAXNAMELEN]; |
| 199 | /* Protocol version */ |
| 200 | u8 protocol; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 201 | /* Set type dimension */ |
| 202 | u8 dimension; |
Jan Engelhardt | c15f1c8 | 2012-02-14 00:24:10 +0100 | [diff] [blame] | 203 | /* |
| 204 | * Supported family: may be NFPROTO_UNSPEC for both |
| 205 | * NFPROTO_IPV4/NFPROTO_IPV6. |
| 206 | */ |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 207 | u8 family; |
Jozsef Kadlecsik | f1e00b3 | 2011-06-16 18:51:41 +0200 | [diff] [blame] | 208 | /* Type revisions */ |
| 209 | u8 revision_min, revision_max; |
Vytas Dauksa | 3b02b56 | 2013-12-17 14:01:43 +0000 | [diff] [blame] | 210 | /* Set features to control swapping */ |
| 211 | u16 features; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 212 | |
| 213 | /* Create set */ |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 214 | int (*create)(struct net *net, struct ip_set *set, |
| 215 | struct nlattr *tb[], u32 flags); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 216 | |
| 217 | /* Attribute policies */ |
| 218 | const struct nla_policy create_policy[IPSET_ATTR_CREATE_MAX + 1]; |
| 219 | const struct nla_policy adt_policy[IPSET_ATTR_ADT_MAX + 1]; |
| 220 | |
| 221 | /* Set this to THIS_MODULE if you are a module, otherwise NULL */ |
| 222 | struct module *me; |
| 223 | }; |
| 224 | |
| 225 | /* register and unregister set type */ |
| 226 | extern int ip_set_type_register(struct ip_set_type *set_type); |
| 227 | extern void ip_set_type_unregister(struct ip_set_type *set_type); |
| 228 | |
| 229 | /* A generic IP set */ |
| 230 | struct ip_set { |
| 231 | /* The name of the set */ |
| 232 | char name[IPSET_MAXNAMELEN]; |
| 233 | /* Lock protecting the set data */ |
Jozsef Kadlecsik | b57b2d1 | 2015-06-13 14:22:25 +0200 | [diff] [blame] | 234 | spinlock_t lock; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 235 | /* References to the set */ |
Jozsef Kadlecsik | 2f9f28b | 2011-04-04 15:19:25 +0200 | [diff] [blame] | 236 | u32 ref; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 237 | /* The core set type */ |
| 238 | struct ip_set_type *type; |
| 239 | /* The type variant doing the real job */ |
| 240 | const struct ip_set_type_variant *variant; |
| 241 | /* The actual INET family of the set */ |
| 242 | u8 family; |
Jozsef Kadlecsik | f1e00b3 | 2011-06-16 18:51:41 +0200 | [diff] [blame] | 243 | /* The type revision */ |
| 244 | u8 revision; |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 245 | /* Extensions */ |
| 246 | u8 extensions; |
Jozsef Kadlecsik | af284ec | 2014-02-13 12:19:56 +0100 | [diff] [blame] | 247 | /* Create flags */ |
| 248 | u8 flags; |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 249 | /* Default timeout value, if enabled */ |
| 250 | u32 timeout; |
| 251 | /* Element data size */ |
| 252 | size_t dsize; |
| 253 | /* Offsets to extensions in elements */ |
| 254 | size_t offset[IPSET_EXT_ID_MAX]; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 255 | /* The type specific data */ |
| 256 | void *data; |
| 257 | }; |
| 258 | |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 259 | static inline void |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 260 | ip_set_ext_destroy(struct ip_set *set, void *data) |
| 261 | { |
| 262 | /* Check that the extension is enabled for the set and |
| 263 | * call it's destroy function for its extension part in data. |
| 264 | */ |
| 265 | if (SET_WITH_COMMENT(set)) |
| 266 | ip_set_extensions[IPSET_EXT_ID_COMMENT].destroy( |
| 267 | ext_comment(data, set)); |
| 268 | } |
| 269 | |
| 270 | static inline int |
| 271 | ip_set_put_flags(struct sk_buff *skb, struct ip_set *set) |
| 272 | { |
| 273 | u32 cadt_flags = 0; |
| 274 | |
| 275 | if (SET_WITH_TIMEOUT(set)) |
| 276 | if (unlikely(nla_put_net32(skb, IPSET_ATTR_TIMEOUT, |
| 277 | htonl(set->timeout)))) |
| 278 | return -EMSGSIZE; |
| 279 | if (SET_WITH_COUNTER(set)) |
| 280 | cadt_flags |= IPSET_FLAG_WITH_COUNTERS; |
| 281 | if (SET_WITH_COMMENT(set)) |
| 282 | cadt_flags |= IPSET_FLAG_WITH_COMMENT; |
Anton Danilov | 0e9871e | 2014-08-28 10:11:27 +0400 | [diff] [blame] | 283 | if (SET_WITH_SKBINFO(set)) |
| 284 | cadt_flags |= IPSET_FLAG_WITH_SKBINFO; |
Josh Hunt | 07cf8f5 | 2014-02-28 22:14:57 -0500 | [diff] [blame] | 285 | if (SET_WITH_FORCEADD(set)) |
| 286 | cadt_flags |= IPSET_FLAG_WITH_FORCEADD; |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 287 | |
| 288 | if (!cadt_flags) |
| 289 | return 0; |
| 290 | return nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(cadt_flags)); |
| 291 | } |
| 292 | |
| 293 | static inline void |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 294 | ip_set_add_bytes(u64 bytes, struct ip_set_counter *counter) |
| 295 | { |
| 296 | atomic64_add((long long)bytes, &(counter)->bytes); |
| 297 | } |
| 298 | |
| 299 | static inline void |
| 300 | ip_set_add_packets(u64 packets, struct ip_set_counter *counter) |
| 301 | { |
| 302 | atomic64_add((long long)packets, &(counter)->packets); |
| 303 | } |
| 304 | |
| 305 | static inline u64 |
| 306 | ip_set_get_bytes(const struct ip_set_counter *counter) |
| 307 | { |
| 308 | return (u64)atomic64_read(&(counter)->bytes); |
| 309 | } |
| 310 | |
| 311 | static inline u64 |
| 312 | ip_set_get_packets(const struct ip_set_counter *counter) |
| 313 | { |
| 314 | return (u64)atomic64_read(&(counter)->packets); |
| 315 | } |
| 316 | |
| 317 | static inline void |
| 318 | ip_set_update_counter(struct ip_set_counter *counter, |
| 319 | const struct ip_set_ext *ext, |
| 320 | struct ip_set_ext *mext, u32 flags) |
| 321 | { |
Jozsef Kadlecsik | 6e01781 | 2013-04-27 14:40:50 +0200 | [diff] [blame] | 322 | if (ext->packets != ULLONG_MAX && |
| 323 | !(flags & IPSET_FLAG_SKIP_COUNTER_UPDATE)) { |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 324 | ip_set_add_bytes(ext->bytes, counter); |
| 325 | ip_set_add_packets(ext->packets, counter); |
| 326 | } |
Jozsef Kadlecsik | 6e01781 | 2013-04-27 14:40:50 +0200 | [diff] [blame] | 327 | if (flags & IPSET_FLAG_MATCH_COUNTERS) { |
| 328 | mext->packets = ip_set_get_packets(counter); |
| 329 | mext->bytes = ip_set_get_bytes(counter); |
| 330 | } |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 331 | } |
| 332 | |
Anton Danilov | 0e9871e | 2014-08-28 10:11:27 +0400 | [diff] [blame] | 333 | static inline void |
| 334 | ip_set_get_skbinfo(struct ip_set_skbinfo *skbinfo, |
| 335 | const struct ip_set_ext *ext, |
| 336 | struct ip_set_ext *mext, u32 flags) |
| 337 | { |
| 338 | mext->skbmark = skbinfo->skbmark; |
| 339 | mext->skbmarkmask = skbinfo->skbmarkmask; |
| 340 | mext->skbprio = skbinfo->skbprio; |
| 341 | mext->skbqueue = skbinfo->skbqueue; |
| 342 | } |
| 343 | static inline bool |
| 344 | ip_set_put_skbinfo(struct sk_buff *skb, struct ip_set_skbinfo *skbinfo) |
| 345 | { |
Jozsef Kadlecsik | aef9619 | 2014-09-15 17:30:54 +0200 | [diff] [blame] | 346 | /* Send nonzero parameters only */ |
| 347 | return ((skbinfo->skbmark || skbinfo->skbmarkmask) && |
| 348 | nla_put_net64(skb, IPSET_ATTR_SKBMARK, |
| 349 | cpu_to_be64((u64)skbinfo->skbmark << 32 | |
| 350 | skbinfo->skbmarkmask))) || |
| 351 | (skbinfo->skbprio && |
Jozsef Kadlecsik | ca0f6a5 | 2015-06-13 19:45:33 +0200 | [diff] [blame] | 352 | nla_put_net32(skb, IPSET_ATTR_SKBPRIO, |
Jozsef Kadlecsik | aef9619 | 2014-09-15 17:30:54 +0200 | [diff] [blame] | 353 | cpu_to_be32(skbinfo->skbprio))) || |
| 354 | (skbinfo->skbqueue && |
Jozsef Kadlecsik | ca0f6a5 | 2015-06-13 19:45:33 +0200 | [diff] [blame] | 355 | nla_put_net16(skb, IPSET_ATTR_SKBQUEUE, |
Jozsef Kadlecsik | aef9619 | 2014-09-15 17:30:54 +0200 | [diff] [blame] | 356 | cpu_to_be16(skbinfo->skbqueue))); |
Anton Danilov | 0e9871e | 2014-08-28 10:11:27 +0400 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | static inline void |
| 360 | ip_set_init_skbinfo(struct ip_set_skbinfo *skbinfo, |
| 361 | const struct ip_set_ext *ext) |
| 362 | { |
| 363 | skbinfo->skbmark = ext->skbmark; |
| 364 | skbinfo->skbmarkmask = ext->skbmarkmask; |
| 365 | skbinfo->skbprio = ext->skbprio; |
| 366 | skbinfo->skbqueue = ext->skbqueue; |
| 367 | } |
| 368 | |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 369 | static inline bool |
| 370 | ip_set_put_counter(struct sk_buff *skb, struct ip_set_counter *counter) |
| 371 | { |
| 372 | return nla_put_net64(skb, IPSET_ATTR_BYTES, |
| 373 | cpu_to_be64(ip_set_get_bytes(counter))) || |
| 374 | nla_put_net64(skb, IPSET_ATTR_PACKETS, |
| 375 | cpu_to_be64(ip_set_get_packets(counter))); |
| 376 | } |
| 377 | |
| 378 | static inline void |
| 379 | ip_set_init_counter(struct ip_set_counter *counter, |
| 380 | const struct ip_set_ext *ext) |
| 381 | { |
| 382 | if (ext->bytes != ULLONG_MAX) |
| 383 | atomic64_set(&(counter)->bytes, (long long)(ext->bytes)); |
| 384 | if (ext->packets != ULLONG_MAX) |
| 385 | atomic64_set(&(counter)->packets, (long long)(ext->packets)); |
| 386 | } |
| 387 | |
Jozsef Kadlecsik | 9330288 | 2013-10-18 11:41:55 +0200 | [diff] [blame] | 388 | /* Netlink CB args */ |
| 389 | enum { |
Jozsef Kadlecsik | c4c9978 | 2015-06-13 11:59:45 +0200 | [diff] [blame] | 390 | IPSET_CB_NET = 0, /* net namespace */ |
| 391 | IPSET_CB_DUMP, /* dump single set/all sets */ |
| 392 | IPSET_CB_INDEX, /* set index */ |
| 393 | IPSET_CB_PRIVATE, /* set private data */ |
| 394 | IPSET_CB_ARG0, /* type specific */ |
Jozsef Kadlecsik | 9330288 | 2013-10-18 11:41:55 +0200 | [diff] [blame] | 395 | IPSET_CB_ARG1, |
Jozsef Kadlecsik | 9330288 | 2013-10-18 11:41:55 +0200 | [diff] [blame] | 396 | }; |
| 397 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 398 | /* register and unregister set references */ |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 399 | extern ip_set_id_t ip_set_get_byname(struct net *net, |
| 400 | const char *name, struct ip_set **set); |
| 401 | extern void ip_set_put_byindex(struct net *net, ip_set_id_t index); |
| 402 | extern const char *ip_set_name_byindex(struct net *net, ip_set_id_t index); |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 403 | extern ip_set_id_t ip_set_nfnl_get_byindex(struct net *net, ip_set_id_t index); |
| 404 | extern void ip_set_nfnl_put(struct net *net, ip_set_id_t index); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 405 | |
| 406 | /* API for iptables set match, and SET target */ |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 407 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 408 | extern int ip_set_add(ip_set_id_t id, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 409 | const struct xt_action_param *par, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 410 | struct ip_set_adt_opt *opt); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 411 | extern int ip_set_del(ip_set_id_t id, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 412 | const struct xt_action_param *par, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 413 | struct ip_set_adt_opt *opt); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 414 | extern int ip_set_test(ip_set_id_t id, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 415 | const struct xt_action_param *par, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 416 | struct ip_set_adt_opt *opt); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 417 | |
| 418 | /* Utility functions */ |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 419 | extern void *ip_set_alloc(size_t size); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 420 | extern void ip_set_free(void *members); |
| 421 | extern int ip_set_get_ipaddr4(struct nlattr *nla, __be32 *ipaddr); |
| 422 | extern int ip_set_get_ipaddr6(struct nlattr *nla, union nf_inet_addr *ipaddr); |
Jozsef Kadlecsik | 03c8b23 | 2013-09-07 00:43:52 +0200 | [diff] [blame] | 423 | extern size_t ip_set_elem_len(struct ip_set *set, struct nlattr *tb[], |
Jozsef Kadlecsik | 95ad1f4 | 2015-11-07 11:21:47 +0100 | [diff] [blame] | 424 | size_t len, size_t align); |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 425 | extern int ip_set_get_extensions(struct ip_set *set, struct nlattr *tb[], |
| 426 | struct ip_set_ext *ext); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 427 | |
| 428 | static inline int |
| 429 | ip_set_get_hostipaddr4(struct nlattr *nla, u32 *ipaddr) |
| 430 | { |
| 431 | __be32 ip; |
| 432 | int ret = ip_set_get_ipaddr4(nla, &ip); |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 433 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 434 | if (ret) |
| 435 | return ret; |
| 436 | *ipaddr = ntohl(ip); |
| 437 | return 0; |
| 438 | } |
| 439 | |
| 440 | /* Ignore IPSET_ERR_EXIST errors if asked to do so? */ |
| 441 | static inline bool |
| 442 | ip_set_eexist(int ret, u32 flags) |
| 443 | { |
| 444 | return ret == -IPSET_ERR_EXIST && (flags & IPSET_FLAG_EXIST); |
| 445 | } |
| 446 | |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 447 | /* Match elements marked with nomatch */ |
| 448 | static inline bool |
Jozsef Kadlecsik | 0f1799b | 2013-09-16 20:04:53 +0200 | [diff] [blame] | 449 | ip_set_enomatch(int ret, u32 flags, enum ipset_adt adt, struct ip_set *set) |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 450 | { |
| 451 | return adt == IPSET_TEST && |
Jozsef Kadlecsik | 0f1799b | 2013-09-16 20:04:53 +0200 | [diff] [blame] | 452 | (set->type->features & IPSET_TYPE_NOMATCH) && |
| 453 | ((flags >> 16) & IPSET_FLAG_NOMATCH) && |
| 454 | (ret > 0 || ret == -ENOTEMPTY); |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 455 | } |
| 456 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 457 | /* Check the NLA_F_NET_BYTEORDER flag */ |
| 458 | static inline bool |
| 459 | ip_set_attr_netorder(struct nlattr *tb[], int type) |
| 460 | { |
| 461 | return tb[type] && (tb[type]->nla_type & NLA_F_NET_BYTEORDER); |
| 462 | } |
| 463 | |
| 464 | static inline bool |
| 465 | ip_set_optattr_netorder(struct nlattr *tb[], int type) |
| 466 | { |
| 467 | return !tb[type] || (tb[type]->nla_type & NLA_F_NET_BYTEORDER); |
| 468 | } |
| 469 | |
| 470 | /* Useful converters */ |
| 471 | static inline u32 |
| 472 | ip_set_get_h32(const struct nlattr *attr) |
| 473 | { |
| 474 | return ntohl(nla_get_be32(attr)); |
| 475 | } |
| 476 | |
| 477 | static inline u16 |
| 478 | ip_set_get_h16(const struct nlattr *attr) |
| 479 | { |
| 480 | return ntohs(nla_get_be16(attr)); |
| 481 | } |
| 482 | |
| 483 | #define ipset_nest_start(skb, attr) nla_nest_start(skb, attr | NLA_F_NESTED) |
| 484 | #define ipset_nest_end(skb, start) nla_nest_end(skb, start) |
| 485 | |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 486 | static inline int nla_put_ipaddr4(struct sk_buff *skb, int type, __be32 ipaddr) |
| 487 | { |
| 488 | struct nlattr *__nested = ipset_nest_start(skb, type); |
| 489 | int ret; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 490 | |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 491 | if (!__nested) |
| 492 | return -EMSGSIZE; |
Jiri Benc | 930345e | 2015-03-29 16:59:25 +0200 | [diff] [blame] | 493 | ret = nla_put_in_addr(skb, IPSET_ATTR_IPADDR_IPV4, ipaddr); |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 494 | if (!ret) |
| 495 | ipset_nest_end(skb, __nested); |
| 496 | return ret; |
| 497 | } |
| 498 | |
Jozsef Kadlecsik | 3ace95c | 2012-09-21 22:01:45 +0200 | [diff] [blame] | 499 | static inline int nla_put_ipaddr6(struct sk_buff *skb, int type, |
| 500 | const struct in6_addr *ipaddrptr) |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 501 | { |
| 502 | struct nlattr *__nested = ipset_nest_start(skb, type); |
| 503 | int ret; |
| 504 | |
| 505 | if (!__nested) |
| 506 | return -EMSGSIZE; |
Jiri Benc | 930345e | 2015-03-29 16:59:25 +0200 | [diff] [blame] | 507 | ret = nla_put_in6_addr(skb, IPSET_ATTR_IPADDR_IPV6, ipaddrptr); |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 508 | if (!ret) |
| 509 | ipset_nest_end(skb, __nested); |
| 510 | return ret; |
| 511 | } |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 512 | |
| 513 | /* Get address from skbuff */ |
| 514 | static inline __be32 |
| 515 | ip4addr(const struct sk_buff *skb, bool src) |
| 516 | { |
| 517 | return src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr; |
| 518 | } |
| 519 | |
| 520 | static inline void |
| 521 | ip4addrptr(const struct sk_buff *skb, bool src, __be32 *addr) |
| 522 | { |
| 523 | *addr = src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr; |
| 524 | } |
| 525 | |
| 526 | static inline void |
| 527 | ip6addrptr(const struct sk_buff *skb, bool src, struct in6_addr *addr) |
| 528 | { |
| 529 | memcpy(addr, src ? &ipv6_hdr(skb)->saddr : &ipv6_hdr(skb)->daddr, |
| 530 | sizeof(*addr)); |
| 531 | } |
| 532 | |
| 533 | /* Calculate the bytes required to store the inclusive range of a-b */ |
| 534 | static inline int |
| 535 | bitmap_bytes(u32 a, u32 b) |
| 536 | { |
| 537 | return 4 * ((((b - a + 8) / 8) + 3) / 4); |
| 538 | } |
| 539 | |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 540 | #include <linux/netfilter/ipset/ip_set_timeout.h> |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 541 | #include <linux/netfilter/ipset/ip_set_comment.h> |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 542 | |
Denys Vlasenko | a3b1c1e | 2015-05-06 16:28:57 +0200 | [diff] [blame] | 543 | int |
Jozsef Kadlecsik | 3fd986b | 2013-09-25 17:44:35 +0200 | [diff] [blame] | 544 | ip_set_put_extensions(struct sk_buff *skb, const struct ip_set *set, |
Denys Vlasenko | a3b1c1e | 2015-05-06 16:28:57 +0200 | [diff] [blame] | 545 | const void *e, bool active); |
Jozsef Kadlecsik | 3fd986b | 2013-09-25 17:44:35 +0200 | [diff] [blame] | 546 | |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 547 | #define IP_SET_INIT_KEXT(skb, opt, set) \ |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 548 | { .bytes = (skb)->len, .packets = 1, \ |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 549 | .timeout = ip_set_adt_opt_timeout(opt, set) } |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 550 | |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 551 | #define IP_SET_INIT_UEXT(set) \ |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 552 | { .bytes = ULLONG_MAX, .packets = ULLONG_MAX, \ |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 553 | .timeout = (set)->timeout } |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 554 | |
Jozsef Kadlecsik | 35b8dcf | 2013-04-30 23:02:43 +0200 | [diff] [blame] | 555 | #define IPSET_CONCAT(a, b) a##b |
| 556 | #define IPSET_TOKEN(a, b) IPSET_CONCAT(a, b) |
| 557 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 558 | #endif /*_IP_SET_H */ |