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netfilter: ipset: The list:set type with counter support
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1/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
2 * Patrick Schaaf <bof@bof.de>
3 * Martin Josefsson <gandalf@wlug.westbo.se>
4 * Copyright (C) 2003-2011 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
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#ifndef _UAPI_IP_SET_H
11#define _UAPI_IP_SET_H
12
13
14#include <linux/types.h>
15
16/* The protocol version */
17#define IPSET_PROTOCOL 6
18
19/* The max length of strings including NUL: set and type identifiers */
20#define IPSET_MAXNAMELEN 32
21
22/* Message types and commands */
23enum ipset_cmd {
24 IPSET_CMD_NONE,
25 IPSET_CMD_PROTOCOL, /* 1: Return protocol version */
26 IPSET_CMD_CREATE, /* 2: Create a new (empty) set */
27 IPSET_CMD_DESTROY, /* 3: Destroy a (empty) set */
28 IPSET_CMD_FLUSH, /* 4: Remove all elements from a set */
29 IPSET_CMD_RENAME, /* 5: Rename a set */
30 IPSET_CMD_SWAP, /* 6: Swap two sets */
31 IPSET_CMD_LIST, /* 7: List sets */
32 IPSET_CMD_SAVE, /* 8: Save sets */
33 IPSET_CMD_ADD, /* 9: Add an element to a set */
34 IPSET_CMD_DEL, /* 10: Delete an element from a set */
35 IPSET_CMD_TEST, /* 11: Test an element in a set */
36 IPSET_CMD_HEADER, /* 12: Get set header data only */
37 IPSET_CMD_TYPE, /* 13: Get set type */
38 IPSET_MSG_MAX, /* Netlink message commands */
39
40 /* Commands in userspace: */
41 IPSET_CMD_RESTORE = IPSET_MSG_MAX, /* 14: Enter restore mode */
42 IPSET_CMD_HELP, /* 15: Get help */
43 IPSET_CMD_VERSION, /* 16: Get program version */
44 IPSET_CMD_QUIT, /* 17: Quit from interactive mode */
45
46 IPSET_CMD_MAX,
47
48 IPSET_CMD_COMMIT = IPSET_CMD_MAX, /* 18: Commit buffered commands */
49};
50
51/* Attributes at command level */
52enum {
53 IPSET_ATTR_UNSPEC,
54 IPSET_ATTR_PROTOCOL, /* 1: Protocol version */
55 IPSET_ATTR_SETNAME, /* 2: Name of the set */
56 IPSET_ATTR_TYPENAME, /* 3: Typename */
57 IPSET_ATTR_SETNAME2 = IPSET_ATTR_TYPENAME, /* Setname at rename/swap */
58 IPSET_ATTR_REVISION, /* 4: Settype revision */
59 IPSET_ATTR_FAMILY, /* 5: Settype family */
60 IPSET_ATTR_FLAGS, /* 6: Flags at command level */
61 IPSET_ATTR_DATA, /* 7: Nested attributes */
62 IPSET_ATTR_ADT, /* 8: Multiple data containers */
63 IPSET_ATTR_LINENO, /* 9: Restore lineno */
64 IPSET_ATTR_PROTOCOL_MIN, /* 10: Minimal supported version number */
65 IPSET_ATTR_REVISION_MIN = IPSET_ATTR_PROTOCOL_MIN, /* type rev min */
66 __IPSET_ATTR_CMD_MAX,
67};
68#define IPSET_ATTR_CMD_MAX (__IPSET_ATTR_CMD_MAX - 1)
69
70/* CADT specific attributes */
71enum {
72 IPSET_ATTR_IP = IPSET_ATTR_UNSPEC + 1,
73 IPSET_ATTR_IP_FROM = IPSET_ATTR_IP,
74 IPSET_ATTR_IP_TO, /* 2 */
75 IPSET_ATTR_CIDR, /* 3 */
76 IPSET_ATTR_PORT, /* 4 */
77 IPSET_ATTR_PORT_FROM = IPSET_ATTR_PORT,
78 IPSET_ATTR_PORT_TO, /* 5 */
79 IPSET_ATTR_TIMEOUT, /* 6 */
80 IPSET_ATTR_PROTO, /* 7 */
81 IPSET_ATTR_CADT_FLAGS, /* 8 */
82 IPSET_ATTR_CADT_LINENO = IPSET_ATTR_LINENO, /* 9 */
83 /* Reserve empty slots */
84 IPSET_ATTR_CADT_MAX = 16,
85 /* Create-only specific attributes */
86 IPSET_ATTR_GC,
87 IPSET_ATTR_HASHSIZE,
88 IPSET_ATTR_MAXELEM,
89 IPSET_ATTR_NETMASK,
90 IPSET_ATTR_PROBES,
91 IPSET_ATTR_RESIZE,
92 IPSET_ATTR_SIZE,
93 /* Kernel-only */
94 IPSET_ATTR_ELEMENTS,
95 IPSET_ATTR_REFERENCES,
96 IPSET_ATTR_MEMSIZE,
97
98 __IPSET_ATTR_CREATE_MAX,
99};
100#define IPSET_ATTR_CREATE_MAX (__IPSET_ATTR_CREATE_MAX - 1)
101
102/* ADT specific attributes */
103enum {
104 IPSET_ATTR_ETHER = IPSET_ATTR_CADT_MAX + 1,
105 IPSET_ATTR_NAME,
106 IPSET_ATTR_NAMEREF,
107 IPSET_ATTR_IP2,
108 IPSET_ATTR_CIDR2,
109 IPSET_ATTR_IP2_TO,
110 IPSET_ATTR_IFACE,
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111 IPSET_ATTR_BYTES,
112 IPSET_ATTR_PACKETS,
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113 __IPSET_ATTR_ADT_MAX,
114};
115#define IPSET_ATTR_ADT_MAX (__IPSET_ATTR_ADT_MAX - 1)
116
117/* IP specific attributes */
118enum {
119 IPSET_ATTR_IPADDR_IPV4 = IPSET_ATTR_UNSPEC + 1,
120 IPSET_ATTR_IPADDR_IPV6,
121 __IPSET_ATTR_IPADDR_MAX,
122};
123#define IPSET_ATTR_IPADDR_MAX (__IPSET_ATTR_IPADDR_MAX - 1)
124
125/* Error codes */
126enum ipset_errno {
127 IPSET_ERR_PRIVATE = 4096,
128 IPSET_ERR_PROTOCOL,
129 IPSET_ERR_FIND_TYPE,
130 IPSET_ERR_MAX_SETS,
131 IPSET_ERR_BUSY,
132 IPSET_ERR_EXIST_SETNAME2,
133 IPSET_ERR_TYPE_MISMATCH,
134 IPSET_ERR_EXIST,
135 IPSET_ERR_INVALID_CIDR,
136 IPSET_ERR_INVALID_NETMASK,
137 IPSET_ERR_INVALID_FAMILY,
138 IPSET_ERR_TIMEOUT,
139 IPSET_ERR_REFERENCED,
140 IPSET_ERR_IPADDR_IPV4,
141 IPSET_ERR_IPADDR_IPV6,
34d666d4 142 IPSET_ERR_COUNTER,
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143
144 /* Type specific error codes */
145 IPSET_ERR_TYPE_SPECIFIC = 4352,
146};
147
148/* Flags at command level */
149enum ipset_cmd_flags {
150 IPSET_FLAG_BIT_EXIST = 0,
151 IPSET_FLAG_EXIST = (1 << IPSET_FLAG_BIT_EXIST),
152 IPSET_FLAG_BIT_LIST_SETNAME = 1,
153 IPSET_FLAG_LIST_SETNAME = (1 << IPSET_FLAG_BIT_LIST_SETNAME),
154 IPSET_FLAG_BIT_LIST_HEADER = 2,
155 IPSET_FLAG_LIST_HEADER = (1 << IPSET_FLAG_BIT_LIST_HEADER),
156 IPSET_FLAG_CMD_MAX = 15, /* Lower half */
157};
158
159/* Flags at CADT attribute level */
160enum ipset_cadt_flags {
161 IPSET_FLAG_BIT_BEFORE = 0,
162 IPSET_FLAG_BEFORE = (1 << IPSET_FLAG_BIT_BEFORE),
163 IPSET_FLAG_BIT_PHYSDEV = 1,
164 IPSET_FLAG_PHYSDEV = (1 << IPSET_FLAG_BIT_PHYSDEV),
165 IPSET_FLAG_BIT_NOMATCH = 2,
166 IPSET_FLAG_NOMATCH = (1 << IPSET_FLAG_BIT_NOMATCH),
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167 IPSET_FLAG_BIT_WITH_COUNTERS = 3,
168 IPSET_FLAG_WITH_COUNTERS = (1 << IPSET_FLAG_BIT_WITH_COUNTERS),
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169 IPSET_FLAG_CADT_MAX = 15, /* Upper half */
170};
171
172/* Commands with settype-specific attributes */
173enum ipset_adt {
174 IPSET_ADD,
175 IPSET_DEL,
176 IPSET_TEST,
177 IPSET_ADT_MAX,
178 IPSET_CREATE = IPSET_ADT_MAX,
179 IPSET_CADT_MAX,
180};
181
182/* Sets are identified by an index in kernel space. Tweak with ip_set_id_t
183 * and IPSET_INVALID_ID if you want to increase the max number of sets.
184 */
185typedef __u16 ip_set_id_t;
186
187#define IPSET_INVALID_ID 65535
188
189enum ip_set_dim {
190 IPSET_DIM_ZERO = 0,
191 IPSET_DIM_ONE,
192 IPSET_DIM_TWO,
193 IPSET_DIM_THREE,
194 /* Max dimension in elements.
195 * If changed, new revision of iptables match/target is required.
196 */
197 IPSET_DIM_MAX = 6,
198 IPSET_BIT_RETURN_NOMATCH = 7,
199};
200
201/* Option flags for kernel operations */
202enum ip_set_kopt {
203 IPSET_INV_MATCH = (1 << IPSET_DIM_ZERO),
204 IPSET_DIM_ONE_SRC = (1 << IPSET_DIM_ONE),
205 IPSET_DIM_TWO_SRC = (1 << IPSET_DIM_TWO),
206 IPSET_DIM_THREE_SRC = (1 << IPSET_DIM_THREE),
207 IPSET_RETURN_NOMATCH = (1 << IPSET_BIT_RETURN_NOMATCH),
208};
209
210
211/* Interface to iptables/ip6tables */
212
213#define SO_IP_SET 83
214
215union ip_set_name_index {
216 char name[IPSET_MAXNAMELEN];
217 ip_set_id_t index;
218};
219
220#define IP_SET_OP_GET_BYNAME 0x00000006 /* Get set index by name */
221struct ip_set_req_get_set {
222 unsigned int op;
223 unsigned int version;
224 union ip_set_name_index set;
225};
226
227#define IP_SET_OP_GET_BYINDEX 0x00000007 /* Get set name by index */
228/* Uses ip_set_req_get_set */
229
230#define IP_SET_OP_VERSION 0x00000100 /* Ask kernel version */
231struct ip_set_req_version {
232 unsigned int op;
233 unsigned int version;
234};
235
236#endif /* _UAPI_IP_SET_H */