From ed342edd98456bd4f23d230481854be160fad1dc Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Wed, 13 Feb 2008 21:35:59 +0100 Subject: Remove support for compilation of conditional extensions --- include/linux/netfilter_ipv4/ip_set.h | 498 +++++++++++++++++++++++++++++++++ include/linux/netfilter_ipv4/ipt_set.h | 21 ++ 2 files changed, 519 insertions(+) create mode 100644 include/linux/netfilter_ipv4/ip_set.h create mode 100644 include/linux/netfilter_ipv4/ipt_set.h (limited to 'include') diff --git a/include/linux/netfilter_ipv4/ip_set.h b/include/linux/netfilter_ipv4/ip_set.h new file mode 100644 index 00000000..92a746e9 --- /dev/null +++ b/include/linux/netfilter_ipv4/ip_set.h @@ -0,0 +1,498 @@ +#ifndef _IP_SET_H +#define _IP_SET_H + +/* Copyright (C) 2000-2002 Joakim Axelsson + * Patrick Schaaf + * Martin Josefsson + * Copyright (C) 2003-2004 Jozsef Kadlecsik + * + * 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. + */ + +#if 0 +#define IP_SET_DEBUG +#endif + +/* + * A sockopt of such quality has hardly ever been seen before on the open + * market! This little beauty, hardly ever used: above 64, so it's + * traditionally used for firewalling, not touched (even once!) by the + * 2.0, 2.2 and 2.4 kernels! + * + * Comes with its own certificate of authenticity, valid anywhere in the + * Free world! + * + * Rusty, 19.4.2000 + */ +#define SO_IP_SET 83 + +/* + * Heavily modify by Joakim Axelsson 08.03.2002 + * - Made it more modulebased + * + * Additional heavy modifications by Jozsef Kadlecsik 22.02.2004 + * - bindings added + * - in order to "deal with" backward compatibility, renamed to ipset + */ + +/* + * Used so that the kernel module and ipset-binary can match their versions + */ +#define IP_SET_PROTOCOL_VERSION 2 + +#define IP_SET_MAXNAMELEN 32 /* set names and set typenames */ + +/* Lets work with our own typedef for representing an IP address. + * We hope to make the code more portable, possibly to IPv6... + * + * The representation works in HOST byte order, because most set types + * will perform arithmetic operations and compare operations. + * + * For now the type is an uint32_t. + * + * Make sure to ONLY use the functions when translating and parsing + * in order to keep the host byte order and make it more portable: + * parse_ip() + * parse_mask() + * parse_ipandmask() + * ip_tostring() + * (Joakim: where are they???) + */ + +typedef uint32_t ip_set_ip_t; + +/* Sets are identified by an id in kernel space. Tweak with ip_set_id_t + * and IP_SET_INVALID_ID if you want to increase the max number of sets. + */ +typedef uint16_t ip_set_id_t; + +#define IP_SET_INVALID_ID 65535 + +/* How deep we follow bindings */ +#define IP_SET_MAX_BINDINGS 6 + +/* + * Option flags for kernel operations (ipt_set_info) + */ +#define IPSET_SRC 0x01 /* Source match/add */ +#define IPSET_DST 0x02 /* Destination match/add */ +#define IPSET_MATCH_INV 0x04 /* Inverse matching */ + +/* + * Set features + */ +#define IPSET_TYPE_IP 0x01 /* IP address type of set */ +#define IPSET_TYPE_PORT 0x02 /* Port type of set */ +#define IPSET_DATA_SINGLE 0x04 /* Single data storage */ +#define IPSET_DATA_DOUBLE 0x08 /* Double data storage */ + +/* Reserved keywords */ +#define IPSET_TOKEN_DEFAULT ":default:" +#define IPSET_TOKEN_ALL ":all:" + +/* SO_IP_SET operation constants, and their request struct types. + * + * Operation ids: + * 0-99: commands with version checking + * 100-199: add/del/test/bind/unbind + * 200-299: list, save, restore + */ + +/* Single shot operations: + * version, create, destroy, flush, rename and swap + * + * Sets are identified by name. + */ + +#define IP_SET_REQ_STD \ + unsigned op; \ + unsigned version; \ + char name[IP_SET_MAXNAMELEN] + +#define IP_SET_OP_CREATE 0x00000001 /* Create a new (empty) set */ +struct ip_set_req_create { + IP_SET_REQ_STD; + char typename[IP_SET_MAXNAMELEN]; +}; + +#define IP_SET_OP_DESTROY 0x00000002 /* Remove a (empty) set */ +struct ip_set_req_std { + IP_SET_REQ_STD; +}; + +#define IP_SET_OP_FLUSH 0x00000003 /* Remove all IPs in a set */ +/* Uses ip_set_req_std */ + +#define IP_SET_OP_RENAME 0x00000004 /* Rename a set */ +/* Uses ip_set_req_create */ + +#define IP_SET_OP_SWAP 0x00000005 /* Swap two sets */ +/* Uses ip_set_req_create */ + +union ip_set_name_index { + char name[IP_SET_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 op; + unsigned 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_VERSION 0x00000100 /* Ask kernel version */ +struct ip_set_req_version { + unsigned op; + unsigned version; +}; + +/* Double shots operations: + * add, del, test, bind and unbind. + * + * First we query the kernel to get the index and type of the target set, + * then issue the command. Validity of IP is checked in kernel in order + * to minimalize sockopt operations. + */ + +/* Get minimal set data for add/del/test/bind/unbind IP */ +#define IP_SET_OP_ADT_GET 0x00000010 /* Get set and type */ +struct ip_set_req_adt_get { + unsigned op; + unsigned version; + union ip_set_name_index set; + char typename[IP_SET_MAXNAMELEN]; +}; + +#define IP_SET_REQ_BYINDEX \ + unsigned op; \ + ip_set_id_t index; + +struct ip_set_req_adt { + IP_SET_REQ_BYINDEX; +}; + +#define IP_SET_OP_ADD_IP 0x00000101 /* Add an IP to a set */ +/* Uses ip_set_req_adt, with type specific addage */ + +#define IP_SET_OP_DEL_IP 0x00000102 /* Remove an IP from a set */ +/* Uses ip_set_req_adt, with type specific addage */ + +#define IP_SET_OP_TEST_IP 0x00000103 /* Test an IP in a set */ +/* Uses ip_set_req_adt, with type specific addage */ + +#define IP_SET_OP_BIND_SET 0x00000104 /* Bind an IP to a set */ +/* Uses ip_set_req_bind, with type specific addage */ +struct ip_set_req_bind { + IP_SET_REQ_BYINDEX; + char binding[IP_SET_MAXNAMELEN]; +}; + +#define IP_SET_OP_UNBIND_SET 0x00000105 /* Unbind an IP from a set */ +/* Uses ip_set_req_bind, with type speficic addage + * index = 0 means unbinding for all sets */ + +#define IP_SET_OP_TEST_BIND_SET 0x00000106 /* Test binding an IP to a set */ +/* Uses ip_set_req_bind, with type specific addage */ + +/* Multiple shots operations: list, save, restore. + * + * - check kernel version and query the max number of sets + * - get the basic information on all sets + * and size required for the next step + * - get actual set data: header, data, bindings + */ + +/* Get max_sets and the index of a queried set + */ +#define IP_SET_OP_MAX_SETS 0x00000020 +struct ip_set_req_max_sets { + unsigned op; + unsigned version; + ip_set_id_t max_sets; /* max_sets */ + ip_set_id_t sets; /* real number of sets */ + union ip_set_name_index set; /* index of set if name used */ +}; + +/* Get the id and name of the sets plus size for next step */ +#define IP_SET_OP_LIST_SIZE 0x00000201 +#define IP_SET_OP_SAVE_SIZE 0x00000202 +struct ip_set_req_setnames { + unsigned op; + ip_set_id_t index; /* set to list/save */ + size_t size; /* size to get setdata/bindings */ + /* followed by sets number of struct ip_set_name_list */ +}; + +struct ip_set_name_list { + char name[IP_SET_MAXNAMELEN]; + char typename[IP_SET_MAXNAMELEN]; + ip_set_id_t index; + ip_set_id_t id; +}; + +/* The actual list operation */ +#define IP_SET_OP_LIST 0x00000203 +struct ip_set_req_list { + IP_SET_REQ_BYINDEX; + /* sets number of struct ip_set_list in reply */ +}; + +struct ip_set_list { + ip_set_id_t index; + ip_set_id_t binding; + u_int32_t ref; + size_t header_size; /* Set header data of header_size */ + size_t members_size; /* Set members data of members_size */ + size_t bindings_size; /* Set bindings data of bindings_size */ +}; + +struct ip_set_hash_list { + ip_set_ip_t ip; + ip_set_id_t binding; +}; + +/* The save operation */ +#define IP_SET_OP_SAVE 0x00000204 +/* Uses ip_set_req_list, in the reply replaced by + * sets number of struct ip_set_save plus a marker + * ip_set_save followed by ip_set_hash_save structures. + */ +struct ip_set_save { + ip_set_id_t index; + ip_set_id_t binding; + size_t header_size; /* Set header data of header_size */ + size_t members_size; /* Set members data of members_size */ +}; + +/* At restoring, ip == 0 means default binding for the given set: */ +struct ip_set_hash_save { + ip_set_ip_t ip; + ip_set_id_t id; + ip_set_id_t binding; +}; + +/* The restore operation */ +#define IP_SET_OP_RESTORE 0x00000205 +/* Uses ip_set_req_setnames followed by ip_set_restore structures + * plus a marker ip_set_restore, followed by ip_set_hash_save + * structures. + */ +struct ip_set_restore { + char name[IP_SET_MAXNAMELEN]; + char typename[IP_SET_MAXNAMELEN]; + ip_set_id_t index; + size_t header_size; /* Create data of header_size */ + size_t members_size; /* Set members data of members_size */ +}; + +static inline int bitmap_bytes(ip_set_ip_t a, ip_set_ip_t b) +{ + return 4 * ((((b - a + 8) / 8) + 3) / 4); +} + +#ifdef __KERNEL__ + +#define ip_set_printk(format, args...) \ + do { \ + printk("%s: %s: ", __FILE__, __FUNCTION__); \ + printk(format "\n" , ## args); \ + } while (0) + +#if defined(IP_SET_DEBUG) +#define DP(format, args...) \ + do { \ + printk("%s: %s (DBG): ", __FILE__, __FUNCTION__);\ + printk(format "\n" , ## args); \ + } while (0) +#define IP_SET_ASSERT(x) \ + do { \ + if (!(x)) \ + printk("IP_SET_ASSERT: %s:%i(%s)\n", \ + __FILE__, __LINE__, __FUNCTION__); \ + } while (0) +#else +#define DP(format, args...) +#define IP_SET_ASSERT(x) +#endif + +struct ip_set; + +/* + * The ip_set_type definition - one per set type, e.g. "ipmap". + * + * Each individual set has a pointer, set->type, going to one + * of these structures. Function pointers inside the structure implement + * the real behaviour of the sets. + * + * If not mentioned differently, the implementation behind the function + * pointers of a set_type, is expected to return 0 if ok, and a negative + * errno (e.g. -EINVAL) on error. + */ +struct ip_set_type { + struct list_head list; /* next in list of set types */ + + /* test for IP in set (kernel: iptables -m set src|dst) + * return 0 if not in set, 1 if in set. + */ + int (*testip_kernel) (struct ip_set *set, + const struct sk_buff * skb, + ip_set_ip_t *ip, + const u_int32_t *flags, + unsigned char index); + + /* test for IP in set (userspace: ipset -T set IP) + * return 0 if not in set, 1 if in set. + */ + int (*testip) (struct ip_set *set, + const void *data, size_t size, + ip_set_ip_t *ip); + + /* + * Size of the data structure passed by when + * adding/deletin/testing an entry. + */ + size_t reqsize; + + /* Add IP into set (userspace: ipset -A set IP) + * Return -EEXIST if the address is already in the set, + * and -ERANGE if the address lies outside the set bounds. + * If the address was not already in the set, 0 is returned. + */ + int (*addip) (struct ip_set *set, + const void *data, size_t size, + ip_set_ip_t *ip); + + /* Add IP into set (kernel: iptables ... -j SET set src|dst) + * Return -EEXIST if the address is already in the set, + * and -ERANGE if the address lies outside the set bounds. + * If the address was not already in the set, 0 is returned. + */ + int (*addip_kernel) (struct ip_set *set, + const struct sk_buff * skb, + ip_set_ip_t *ip, + const u_int32_t *flags, + unsigned char index); + + /* remove IP from set (userspace: ipset -D set --entry x) + * Return -EEXIST if the address is NOT in the set, + * and -ERANGE if the address lies outside the set bounds. + * If the address really was in the set, 0 is returned. + */ + int (*delip) (struct ip_set *set, + const void *data, size_t size, + ip_set_ip_t *ip); + + /* remove IP from set (kernel: iptables ... -j SET --entry x) + * Return -EEXIST if the address is NOT in the set, + * and -ERANGE if the address lies outside the set bounds. + * If the address really was in the set, 0 is returned. + */ + int (*delip_kernel) (struct ip_set *set, + const struct sk_buff * skb, + ip_set_ip_t *ip, + const u_int32_t *flags, + unsigned char index); + + /* new set creation - allocated type specific items + */ + int (*create) (struct ip_set *set, + const void *data, size_t size); + + /* retry the operation after successfully tweaking the set + */ + int (*retry) (struct ip_set *set); + + /* set destruction - free type specific items + * There is no return value. + * Can be called only when child sets are destroyed. + */ + void (*destroy) (struct ip_set *set); + + /* set flushing - reset all bits in the set, or something similar. + * There is no return value. + */ + void (*flush) (struct ip_set *set); + + /* Listing: size needed for header + */ + size_t header_size; + + /* Listing: Get the header + * + * Fill in the information in "data". + * This function is always run after list_header_size() under a + * writelock on the set. Therefor is the length of "data" always + * correct. + */ + void (*list_header) (const struct ip_set *set, + void *data); + + /* Listing: Get the size for the set members + */ + int (*list_members_size) (const struct ip_set *set); + + /* Listing: Get the set members + * + * Fill in the information in "data". + * This function is always run after list_member_size() under a + * writelock on the set. Therefor is the length of "data" always + * correct. + */ + void (*list_members) (const struct ip_set *set, + void *data); + + char typename[IP_SET_MAXNAMELEN]; + unsigned char features; + int protocol_version; + + /* Set this to THIS_MODULE if you are a module, otherwise NULL */ + struct module *me; +}; + +extern int ip_set_register_set_type(struct ip_set_type *set_type); +extern void ip_set_unregister_set_type(struct ip_set_type *set_type); + +/* A generic ipset */ +struct ip_set { + char name[IP_SET_MAXNAMELEN]; /* the name of the set */ + rwlock_t lock; /* lock for concurrency control */ + ip_set_id_t id; /* set id for swapping */ + ip_set_id_t binding; /* default binding for the set */ + atomic_t ref; /* in kernel and in hash references */ + struct ip_set_type *type; /* the set types */ + void *data; /* pooltype specific data */ +}; + +/* Structure to bind set elements to sets */ +struct ip_set_hash { + struct list_head list; /* list of clashing entries in hash */ + ip_set_ip_t ip; /* ip from set */ + ip_set_id_t id; /* set id */ + ip_set_id_t binding; /* set we bind the element to */ +}; + +/* register and unregister set references */ +extern ip_set_id_t ip_set_get_byname(const char name[IP_SET_MAXNAMELEN]); +extern ip_set_id_t ip_set_get_byindex(ip_set_id_t id); +extern void ip_set_put(ip_set_id_t id); + +/* API for iptables set match, and SET target */ +extern void ip_set_addip_kernel(ip_set_id_t id, + const struct sk_buff *skb, + const u_int32_t *flags); +extern void ip_set_delip_kernel(ip_set_id_t id, + const struct sk_buff *skb, + const u_int32_t *flags); +extern int ip_set_testip_kernel(ip_set_id_t id, + const struct sk_buff *skb, + const u_int32_t *flags); + +#endif /* __KERNEL__ */ + +#endif /*_IP_SET_H*/ diff --git a/include/linux/netfilter_ipv4/ipt_set.h b/include/linux/netfilter_ipv4/ipt_set.h new file mode 100644 index 00000000..2a18b93d --- /dev/null +++ b/include/linux/netfilter_ipv4/ipt_set.h @@ -0,0 +1,21 @@ +#ifndef _IPT_SET_H +#define _IPT_SET_H + +#include + +struct ipt_set_info { + ip_set_id_t index; + u_int32_t flags[IP_SET_MAX_BINDINGS + 1]; +}; + +/* match info */ +struct ipt_set_info_match { + struct ipt_set_info match_set; +}; + +struct ipt_set_info_target { + struct ipt_set_info add_set; + struct ipt_set_info del_set; +}; + +#endif /*_IPT_SET_H*/ -- cgit v1.2.3