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/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>

 *                         Patrick Schaaf <bof@bof.de>

 *                         Martin Josefsson <gandalf@wlug.westbo.se>

 * Copyright (C) 2003-2011 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

#ifndef _IP_SET_H

#define _IP_SET_H

#include <linux/types.h>

/* The protocol version */

#define IPSET_PROTOCOL          6

/* The maximum permissible comment length we will accept over netlink */

#define IPSET_MAX_COMMENT_SIZE  255

/* The max length of strings including NUL: set and type identifiers */

#define IPSET_MAXNAMELEN        32

/* Message types and commands */

enum ipset_cmd {

        IPSET_CMD_NONE,

        IPSET_CMD_PROTOCOL,     /* 1: Return protocol version */

        IPSET_CMD_CREATE,       /* 2: Create a new (empty) set */

        IPSET_CMD_DESTROY,      /* 3: Destroy a (empty) set */

        IPSET_CMD_FLUSH,        /* 4: Remove all elements from a set */

        IPSET_CMD_RENAME,       /* 5: Rename a set */

        IPSET_CMD_SWAP,         /* 6: Swap two sets */

        IPSET_CMD_LIST,         /* 7: List sets */

        IPSET_CMD_SAVE,         /* 8: Save sets */

        IPSET_CMD_ADD,          /* 9: Add an element to a set */

        IPSET_CMD_DEL,          /* 10: Delete an element from a set */

        IPSET_CMD_TEST,         /* 11: Test an element in a set */

        IPSET_CMD_HEADER,       /* 12: Get set header data only */

        IPSET_CMD_TYPE,         /* 13: Get set type */

        IPSET_MSG_MAX,          /* Netlink message commands */

        /* Commands in userspace: */

        IPSET_CMD_RESTORE = IPSET_MSG_MAX, /* 14: Enter restore mode */

        IPSET_CMD_HELP,         /* 15: Get help */

        IPSET_CMD_VERSION,      /* 16: Get program version */

        IPSET_CMD_QUIT,         /* 17: Quit from interactive mode */

        IPSET_CMD_MAX,

        IPSET_CMD_COMMIT = IPSET_CMD_MAX, /* 18: Commit buffered commands */

};

/* Attributes at command level */

enum {

        IPSET_ATTR_UNSPEC,

        IPSET_ATTR_PROTOCOL,    /* 1: Protocol version */

        IPSET_ATTR_SETNAME,     /* 2: Name of the set */

        IPSET_ATTR_TYPENAME,    /* 3: Typename */

        IPSET_ATTR_SETNAME2 = IPSET_ATTR_TYPENAME, /* Setname at rename/swap */

        IPSET_ATTR_REVISION,    /* 4: Settype revision */

        IPSET_ATTR_FAMILY,      /* 5: Settype family */

        IPSET_ATTR_FLAGS,       /* 6: Flags at command level */

        IPSET_ATTR_DATA,        /* 7: Nested attributes */

        IPSET_ATTR_ADT,         /* 8: Multiple data containers */

        IPSET_ATTR_LINENO,      /* 9: Restore lineno */

        IPSET_ATTR_PROTOCOL_MIN, /* 10: Minimal supported version number */

        IPSET_ATTR_REVISION_MIN = IPSET_ATTR_PROTOCOL_MIN, /* type rev min */

        __IPSET_ATTR_CMD_MAX,

};

#define IPSET_ATTR_CMD_MAX      (__IPSET_ATTR_CMD_MAX - 1)

/* CADT specific attributes */

enum {

        IPSET_ATTR_IP = IPSET_ATTR_UNSPEC + 1,

        IPSET_ATTR_IP_FROM = IPSET_ATTR_IP,

        IPSET_ATTR_IP_TO,       /* 2 */

        IPSET_ATTR_CIDR,        /* 3 */

        IPSET_ATTR_PORT,        /* 4 */

        IPSET_ATTR_PORT_FROM = IPSET_ATTR_PORT,

        IPSET_ATTR_PORT_TO,     /* 5 */

        IPSET_ATTR_TIMEOUT,     /* 6 */

        IPSET_ATTR_PROTO,       /* 7 */

        IPSET_ATTR_CADT_FLAGS,  /* 8 */

        IPSET_ATTR_CADT_LINENO = IPSET_ATTR_LINENO,     /* 9 */

        /* Reserve empty slots */

        IPSET_ATTR_CADT_MAX = 16,

        /* Create-only specific attributes */

        IPSET_ATTR_GC,

        IPSET_ATTR_HASHSIZE,

        IPSET_ATTR_MAXELEM,

        IPSET_ATTR_NETMASK,

        IPSET_ATTR_PROBES,

        IPSET_ATTR_RESIZE,

        IPSET_ATTR_SIZE,

        /* Kernel-only */

        IPSET_ATTR_ELEMENTS,

        IPSET_ATTR_REFERENCES,

        IPSET_ATTR_MEMSIZE,

        __IPSET_ATTR_CREATE_MAX,

};

#define IPSET_ATTR_CREATE_MAX   (__IPSET_ATTR_CREATE_MAX - 1)

/* ADT specific attributes */

enum {

        IPSET_ATTR_ETHER = IPSET_ATTR_CADT_MAX + 1,

        IPSET_ATTR_NAME,

        IPSET_ATTR_NAMEREF,

        IPSET_ATTR_IP2,

        IPSET_ATTR_CIDR2,

        IPSET_ATTR_IP2_TO,

        IPSET_ATTR_IFACE,

        IPSET_ATTR_BYTES,

        IPSET_ATTR_PACKETS,

        IPSET_ATTR_COMMENT,

        __IPSET_ATTR_ADT_MAX,

};

#define IPSET_ATTR_ADT_MAX      (__IPSET_ATTR_ADT_MAX - 1)

/* IP specific attributes */

enum {

        IPSET_ATTR_IPADDR_IPV4 = IPSET_ATTR_UNSPEC + 1,

        IPSET_ATTR_IPADDR_IPV6,

        __IPSET_ATTR_IPADDR_MAX,

};

#define IPSET_ATTR_IPADDR_MAX   (__IPSET_ATTR_IPADDR_MAX - 1)

/* Error codes */

enum ipset_errno {

        IPSET_ERR_PRIVATE = 4096,

        IPSET_ERR_PROTOCOL,

        IPSET_ERR_FIND_TYPE,

        IPSET_ERR_MAX_SETS,

        IPSET_ERR_BUSY,

        IPSET_ERR_EXIST_SETNAME2,

        IPSET_ERR_TYPE_MISMATCH,

        IPSET_ERR_EXIST,

        IPSET_ERR_INVALID_CIDR,

        IPSET_ERR_INVALID_NETMASK,

        IPSET_ERR_INVALID_FAMILY,

        IPSET_ERR_TIMEOUT,

        IPSET_ERR_REFERENCED,

        IPSET_ERR_IPADDR_IPV4,

        IPSET_ERR_IPADDR_IPV6,

        IPSET_ERR_COUNTER,

        IPSET_ERR_COMMENT,

        /* Type specific error codes */

        IPSET_ERR_TYPE_SPECIFIC = 4352,

};

/* Flags at command level or match/target flags, lower half of cmdattrs*/

enum ipset_cmd_flags {

        IPSET_FLAG_BIT_EXIST    = 0,

        IPSET_FLAG_EXIST        = (1 << IPSET_FLAG_BIT_EXIST),

        IPSET_FLAG_BIT_LIST_SETNAME = 1,

        IPSET_FLAG_LIST_SETNAME = (1 << IPSET_FLAG_BIT_LIST_SETNAME),

        IPSET_FLAG_BIT_LIST_HEADER = 2,

        IPSET_FLAG_LIST_HEADER  = (1 << IPSET_FLAG_BIT_LIST_HEADER),

        IPSET_FLAG_BIT_SKIP_COUNTER_UPDATE = 3,

        IPSET_FLAG_SKIP_COUNTER_UPDATE =

                (1 << IPSET_FLAG_BIT_SKIP_COUNTER_UPDATE),

        IPSET_FLAG_BIT_SKIP_SUBCOUNTER_UPDATE = 4,

        IPSET_FLAG_SKIP_SUBCOUNTER_UPDATE =

                (1 << IPSET_FLAG_BIT_SKIP_SUBCOUNTER_UPDATE),

        IPSET_FLAG_BIT_MATCH_COUNTERS = 5,

        IPSET_FLAG_MATCH_COUNTERS = (1 << IPSET_FLAG_BIT_MATCH_COUNTERS),

        IPSET_FLAG_BIT_RETURN_NOMATCH = 7,

        IPSET_FLAG_RETURN_NOMATCH = (1 << IPSET_FLAG_BIT_RETURN_NOMATCH),

        IPSET_FLAG_CMD_MAX = 15,

};

/* Flags at CADT attribute level, upper half of cmdattrs */

enum ipset_cadt_flags {

        IPSET_FLAG_BIT_BEFORE   = 0,

        IPSET_FLAG_BEFORE       = (1 << IPSET_FLAG_BIT_BEFORE),

        IPSET_FLAG_BIT_PHYSDEV  = 1,

        IPSET_FLAG_PHYSDEV      = (1 << IPSET_FLAG_BIT_PHYSDEV),

        IPSET_FLAG_BIT_NOMATCH  = 2,

        IPSET_FLAG_NOMATCH      = (1 << IPSET_FLAG_BIT_NOMATCH),

        IPSET_FLAG_BIT_WITH_COUNTERS = 3,

        IPSET_FLAG_WITH_COUNTERS = (1 << IPSET_FLAG_BIT_WITH_COUNTERS),

        IPSET_FLAG_BIT_WITH_COMMENT = 4,

        IPSET_FLAG_WITH_COMMENT = (1 << IPSET_FLAG_BIT_WITH_COMMENT),

        IPSET_FLAG_CADT_MAX     = 15,

};

/* Commands with settype-specific attributes */

enum ipset_adt {

        IPSET_ADD,

        IPSET_DEL,

        IPSET_TEST,

        IPSET_ADT_MAX,

        IPSET_CREATE = IPSET_ADT_MAX,

        IPSET_CADT_MAX,

};

/* Sets are identified by an index in kernel space. Tweak with ip_set_id_t

 * and IPSET_INVALID_ID if you want to increase the max number of sets.

 */

typedef __u16 ip_set_id_t;

#define IPSET_INVALID_ID                65535

enum ip_set_dim {

        IPSET_DIM_ZERO = 0,

        IPSET_DIM_ONE,

        IPSET_DIM_TWO,

        IPSET_DIM_THREE,

        /* Max dimension in elements.

         * If changed, new revision of iptables match/target is required.

         */

        IPSET_DIM_MAX = 6,

        /* Backward compatibility: set match revision 2 */

        IPSET_BIT_RETURN_NOMATCH = 7,

};

/* Option flags for kernel operations */

enum ip_set_kopt {

        IPSET_INV_MATCH = (1 << IPSET_DIM_ZERO),

        IPSET_DIM_ONE_SRC = (1 << IPSET_DIM_ONE),

        IPSET_DIM_TWO_SRC = (1 << IPSET_DIM_TWO),

        IPSET_DIM_THREE_SRC = (1 << IPSET_DIM_THREE),

        IPSET_RETURN_NOMATCH = (1 << IPSET_BIT_RETURN_NOMATCH),

};

enum {

        IPSET_COUNTER_NONE = 0,

        IPSET_COUNTER_EQ,

        IPSET_COUNTER_NE,

        IPSET_COUNTER_LT,

        IPSET_COUNTER_GT,

};

struct ip_set_counter_match {

        __u8 op;

        __u64 value;

};

/* Interface to iptables/ip6tables */

#define SO_IP_SET               83

union ip_set_name_index {

        char name[IPSET_MAXNAMELEN];

        ip_set_id_t index;

};

#define IP_SET_OP_GET_BYNAME    0x00000006      /* Get set index by name */

struct ip_set_req_get_set {

        unsigned int op;

        unsigned int version;

        union ip_set_name_index set;

};

#define IP_SET_OP_GET_BYINDEX   0x00000007      /* Get set name by index */

/* Uses ip_set_req_get_set */

#define IP_SET_OP_GET_FNAME     0x00000008      /* Get set index and family */

struct ip_set_req_get_set_family {

        unsigned int op;

        unsigned int version;

        unsigned int family;

        union ip_set_name_index set;

};

#define IP_SET_OP_VERSION       0x00000100      /* Ask kernel version */

struct ip_set_req_version {

        unsigned int op;

        unsigned int version;

};

#endif /* _IP_SET_H */