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openwrt-xburst/target/linux/generic-2.6/patches-2.6.25/130-netfilter_ipset.patch
hauke e0cf13bf5a [ipset] Update ipset to version 3.2 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17764 3c298f89-4303-0410-b956-a3cf2f4a3e73
2009-09-27 15:03:41 +00:00

7750 lines
200 KiB
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--- a/include/linux/netfilter_ipv4/Kbuild
+++ b/include/linux/netfilter_ipv4/Kbuild
@@ -45,3 +45,20 @@ header-y += ipt_ttl.h
unifdef-y += ip_queue.h
unifdef-y += ip_tables.h
+
+unifdef-y += ip_set.h
+header-y += ip_set_iphash.h
+unifdef-y += ip_set_bitmaps.h
+unifdef-y += ip_set_getport.h
+unifdef-y += ip_set_hashes.h
+header-y += ip_set_ipmap.h
+header-y += ip_set_ipporthash.h
+header-y += ip_set_ipportiphash.h
+header-y += ip_set_ipportnethash.h
+unifdef-y += ip_set_iptree.h
+unifdef-y += ip_set_iptreemap.h
+header-y += ip_set_jhash.h
+header-y += ip_set_macipmap.h
+header-y += ip_set_nethash.h
+header-y += ip_set_portmap.h
+header-y += ip_set_setlist.h
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set.h
@@ -0,0 +1,574 @@
+#ifndef _IP_SET_H
+#define _IP_SET_H
+
+/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
+ * Patrick Schaaf <bof@bof.de>
+ * Martin Josefsson <gandalf@wlug.westbo.se>
+ * Copyright (C) 2003-2004 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.
+ */
+
+#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 3
+
+#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 */
+#define IPSET_DATA_TRIPLE 0x10 /* Triple data storage */
+#define IPSET_TYPE_IP1 0x20 /* IP address type of set */
+#define IPSET_TYPE_SETNAME 0x40 /* setname type of set */
+
+/* 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 */
+ u_int32_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;
+ u_int32_t header_size; /* Set header data of header_size */
+ u_int32_t members_size; /* Set members data of members_size */
+ u_int32_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;
+ u_int32_t header_size; /* Set header data of header_size */
+ u_int32_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;
+ u_int32_t header_size; /* Create data of header_size */
+ u_int32_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);
+}
+
+/* General limit for the elements in a set */
+#define MAX_RANGE 0x0000FFFF
+
+#ifdef __KERNEL__
+#include <linux/netfilter_ipv4/ip_set_compat.h>
+#include <linux/netfilter_ipv4/ip_set_malloc.h>
+
+#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, u_int32_t size,
+ ip_set_ip_t *ip);
+
+ /*
+ * Size of the data structure passed by when
+ * adding/deletin/testing an entry.
+ */
+ u_int32_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, u_int32_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, u_int32_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, u_int32_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
+ */
+ u_int32_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 index);
+extern void ip_set_put_byindex(ip_set_id_t index);
+extern ip_set_id_t ip_set_id(ip_set_id_t index);
+extern ip_set_id_t __ip_set_get_byname(const char name[IP_SET_MAXNAMELEN],
+ struct ip_set **set);
+extern void __ip_set_put_byindex(ip_set_id_t index);
+
+/* API for iptables set match, and SET target */
+extern int ip_set_addip_kernel(ip_set_id_t id,
+ const struct sk_buff *skb,
+ const u_int32_t *flags);
+extern int 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);
+
+/* Macros to generate functions */
+
+#define STRUCT(pre, type) CONCAT2(pre, type)
+#define CONCAT2(pre, type) struct pre##type
+
+#define FNAME(pre, mid, post) CONCAT3(pre, mid, post)
+#define CONCAT3(pre, mid, post) pre##mid##post
+
+#define UADT0(type, adt, args...) \
+static int \
+FNAME(type,_u,adt)(struct ip_set *set, const void *data, u_int32_t size,\
+ ip_set_ip_t *hash_ip) \
+{ \
+ const STRUCT(ip_set_req_,type) *req = data; \
+ \
+ return FNAME(type,_,adt)(set, hash_ip , ## args); \
+}
+
+#define UADT(type, adt, args...) \
+ UADT0(type, adt, req->ip , ## args)
+
+#define KADT(type, adt, getfn, args...) \
+static int \
+FNAME(type,_k,adt)(struct ip_set *set, \
+ const struct sk_buff *skb, \
+ ip_set_ip_t *hash_ip, \
+ const u_int32_t *flags, \
+ unsigned char index) \
+{ \
+ ip_set_ip_t ip = getfn(skb, flags[index]); \
+ \
+ KADT_CONDITION \
+ return FNAME(type,_,adt)(set, hash_ip, ip , ##args); \
+}
+
+#define REGISTER_MODULE(type) \
+static int __init ip_set_##type##_init(void) \
+{ \
+ init_max_page_size(); \
+ return ip_set_register_set_type(&ip_set_##type); \
+} \
+ \
+static void __exit ip_set_##type##_fini(void) \
+{ \
+ /* FIXME: possible race with ip_set_create() */ \
+ ip_set_unregister_set_type(&ip_set_##type); \
+} \
+ \
+module_init(ip_set_##type##_init); \
+module_exit(ip_set_##type##_fini);
+
+/* Common functions */
+
+static inline ip_set_ip_t
+ipaddr(const struct sk_buff *skb, u_int32_t flag)
+{
+ return ntohl(flag & IPSET_SRC ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr);
+}
+
+#define jhash_ip(map, i, ip) jhash_1word(ip, *(map->initval + i))
+
+#define pack_ip_port(map, ip, port) \
+ (port + ((ip - ((map)->first_ip)) << 16))
+
+#endif /* __KERNEL__ */
+
+#endif /*_IP_SET_H*/
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_bitmaps.h
@@ -0,0 +1,121 @@
+#ifndef __IP_SET_BITMAPS_H
+#define __IP_SET_BITMAPS_H
+
+/* Macros to generate functions */
+
+#ifdef __KERNEL__
+#define BITMAP_CREATE(type) \
+static int \
+type##_create(struct ip_set *set, const void *data, u_int32_t size) \
+{ \
+ int newbytes; \
+ const struct ip_set_req_##type##_create *req = data; \
+ struct ip_set_##type *map; \
+ \
+ if (req->from > req->to) { \
+ DP("bad range"); \
+ return -ENOEXEC; \
+ } \
+ \
+ map = kmalloc(sizeof(struct ip_set_##type), GFP_KERNEL); \
+ if (!map) { \
+ DP("out of memory for %zu bytes", \
+ sizeof(struct ip_set_##type)); \
+ return -ENOMEM; \
+ } \
+ map->first_ip = req->from; \
+ map->last_ip = req->to; \
+ \
+ newbytes = __##type##_create(req, map); \
+ if (newbytes < 0) { \
+ kfree(map); \
+ return newbytes; \
+ } \
+ \
+ map->size = newbytes; \
+ map->members = ip_set_malloc(newbytes); \
+ if (!map->members) { \
+ DP("out of memory for %i bytes", newbytes); \
+ kfree(map); \
+ return -ENOMEM; \
+ } \
+ memset(map->members, 0, newbytes); \
+ \
+ set->data = map; \
+ return 0; \
+}
+
+#define BITMAP_DESTROY(type) \
+static void \
+type##_destroy(struct ip_set *set) \
+{ \
+ struct ip_set_##type *map = set->data; \
+ \
+ ip_set_free(map->members, map->size); \
+ kfree(map); \
+ \
+ set->data = NULL; \
+}
+
+#define BITMAP_FLUSH(type) \
+static void \
+type##_flush(struct ip_set *set) \
+{ \
+ struct ip_set_##type *map = set->data; \
+ memset(map->members, 0, map->size); \
+}
+
+#define BITMAP_LIST_HEADER(type) \
+static void \
+type##_list_header(const struct ip_set *set, void *data) \
+{ \
+ const struct ip_set_##type *map = set->data; \
+ struct ip_set_req_##type##_create *header = data; \
+ \
+ header->from = map->first_ip; \
+ header->to = map->last_ip; \
+ __##type##_list_header(map, header); \
+}
+
+#define BITMAP_LIST_MEMBERS_SIZE(type) \
+static int \
+type##_list_members_size(const struct ip_set *set) \
+{ \
+ const struct ip_set_##type *map = set->data; \
+ \
+ return map->size; \
+}
+
+#define BITMAP_LIST_MEMBERS(type) \
+static void \
+type##_list_members(const struct ip_set *set, void *data) \
+{ \
+ const struct ip_set_##type *map = set->data; \
+ \
+ memcpy(data, map->members, map->size); \
+}
+
+#define IP_SET_TYPE(type, __features) \
+struct ip_set_type ip_set_##type = { \
+ .typename = #type, \
+ .features = __features, \
+ .protocol_version = IP_SET_PROTOCOL_VERSION, \
+ .create = &type##_create, \
+ .destroy = &type##_destroy, \
+ .flush = &type##_flush, \
+ .reqsize = sizeof(struct ip_set_req_##type), \
+ .addip = &type##_uadd, \
+ .addip_kernel = &type##_kadd, \
+ .delip = &type##_udel, \
+ .delip_kernel = &type##_kdel, \
+ .testip = &type##_utest, \
+ .testip_kernel = &type##_ktest, \
+ .header_size = sizeof(struct ip_set_req_##type##_create),\
+ .list_header = &type##_list_header, \
+ .list_members_size = &type##_list_members_size, \
+ .list_members = &type##_list_members, \
+ .me = THIS_MODULE, \
+};
+#endif /* __KERNEL */
+
+#endif /* __IP_SET_BITMAPS_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_compat.h
@@ -0,0 +1,71 @@
+#ifndef _IP_SET_COMPAT_H
+#define _IP_SET_COMPAT_H
+
+#ifdef __KERNEL__
+#include <linux/version.h>
+
+/* Arrgh */
+#ifdef MODULE
+#define __MOD_INC(foo) __MOD_INC_USE_COUNT(foo)
+#define __MOD_DEC(foo) __MOD_DEC_USE_COUNT(foo)
+#else
+#define __MOD_INC(foo) 1
+#define __MOD_DEC(foo)
+#endif
+
+/* Backward compatibility */
+#ifndef __nocast
+#define __nocast
+#endif
+#ifndef __bitwise__
+#define __bitwise__
+#endif
+
+/* Compatibility glue code */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+#include <linux/interrupt.h>
+#define DEFINE_RWLOCK(x) rwlock_t x = RW_LOCK_UNLOCKED
+#define try_module_get(x) __MOD_INC(x)
+#define module_put(x) __MOD_DEC(x)
+#define __clear_bit(nr, addr) clear_bit(nr, addr)
+#define __set_bit(nr, addr) set_bit(nr, addr)
+#define __test_and_set_bit(nr, addr) test_and_set_bit(nr, addr)
+#define __test_and_clear_bit(nr, addr) test_and_clear_bit(nr, addr)
+
+typedef unsigned __bitwise__ gfp_t;
+
+static inline void *kzalloc(size_t size, gfp_t flags)
+{
+ void *data = kmalloc(size, flags);
+
+ if (data)
+ memset(data, 0, size);
+
+ return data;
+}
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+#define __KMEM_CACHE_T__ kmem_cache_t
+#else
+#define __KMEM_CACHE_T__ struct kmem_cache
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
+#define ip_hdr(skb) ((skb)->nh.iph)
+#define skb_mac_header(skb) ((skb)->mac.raw)
+#define eth_hdr(skb) ((struct ethhdr *)skb_mac_header(skb))
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
+#include <linux/netfilter.h>
+#define KMEM_CACHE_CREATE(name, size) \
+ kmem_cache_create(name, size, 0, 0, NULL, NULL)
+#else
+#define KMEM_CACHE_CREATE(name, size) \
+ kmem_cache_create(name, size, 0, 0, NULL)
+#endif
+
+
+#endif /* __KERNEL__ */
+#endif /* _IP_SET_COMPAT_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_getport.h
@@ -0,0 +1,48 @@
+#ifndef _IP_SET_GETPORT_H
+#define _IP_SET_GETPORT_H
+
+#ifdef __KERNEL__
+
+#define INVALID_PORT (MAX_RANGE + 1)
+
+/* We must handle non-linear skbs */
+static inline ip_set_ip_t
+get_port(const struct sk_buff *skb, u_int32_t flags)
+{
+ struct iphdr *iph = ip_hdr(skb);
+ u_int16_t offset = ntohs(iph->frag_off) & IP_OFFSET;
+ switch (iph->protocol) {
+ case IPPROTO_TCP: {
+ struct tcphdr tcph;
+
+ /* See comments at tcp_match in ip_tables.c */
+ if (offset)
+ return INVALID_PORT;
+
+ if (skb_copy_bits(skb, ip_hdr(skb)->ihl*4, &tcph, sizeof(tcph)) < 0)
+ /* No choice either */
+ return INVALID_PORT;
+
+ return ntohs(flags & IPSET_SRC ?
+ tcph.source : tcph.dest);
+ }
+ case IPPROTO_UDP: {
+ struct udphdr udph;
+
+ if (offset)
+ return INVALID_PORT;
+
+ if (skb_copy_bits(skb, ip_hdr(skb)->ihl*4, &udph, sizeof(udph)) < 0)
+ /* No choice either */
+ return INVALID_PORT;
+
+ return ntohs(flags & IPSET_SRC ?
+ udph.source : udph.dest);
+ }
+ default:
+ return INVALID_PORT;
+ }
+}
+#endif /* __KERNEL__ */
+
+#endif /*_IP_SET_GETPORT_H*/
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_hashes.h
@@ -0,0 +1,306 @@
+#ifndef __IP_SET_HASHES_H
+#define __IP_SET_HASHES_H
+
+#define initval_t uint32_t
+
+/* Macros to generate functions */
+
+#ifdef __KERNEL__
+#define HASH_RETRY0(type, dtype, cond) \
+static int \
+type##_retry(struct ip_set *set) \
+{ \
+ struct ip_set_##type *map = set->data, *tmp; \
+ dtype *elem; \
+ void *members; \
+ u_int32_t i, hashsize = map->hashsize; \
+ int res; \
+ \
+ if (map->resize == 0) \
+ return -ERANGE; \
+ \
+ again: \
+ res = 0; \
+ \
+ /* Calculate new hash size */ \
+ hashsize += (hashsize * map->resize)/100; \
+ if (hashsize == map->hashsize) \
+ hashsize++; \
+ \
+ ip_set_printk("rehashing of set %s triggered: " \
+ "hashsize grows from %lu to %lu", \
+ set->name, \
+ (long unsigned)map->hashsize, \
+ (long unsigned)hashsize); \
+ \
+ tmp = kmalloc(sizeof(struct ip_set_##type) \
+ + map->probes * sizeof(initval_t), GFP_ATOMIC); \
+ if (!tmp) { \
+ DP("out of memory for %zu bytes", \
+ sizeof(struct ip_set_##type) \
+ + map->probes * sizeof(initval_t)); \
+ return -ENOMEM; \
+ } \
+ tmp->members = harray_malloc(hashsize, sizeof(dtype), GFP_ATOMIC);\
+ if (!tmp->members) { \
+ DP("out of memory for %zu bytes", hashsize * sizeof(dtype));\
+ kfree(tmp); \
+ return -ENOMEM; \
+ } \
+ tmp->hashsize = hashsize; \
+ tmp->elements = 0; \
+ tmp->probes = map->probes; \
+ tmp->resize = map->resize; \
+ memcpy(tmp->initval, map->initval, map->probes * sizeof(initval_t));\
+ __##type##_retry(tmp, map); \
+ \
+ write_lock_bh(&set->lock); \
+ map = set->data; /* Play safe */ \
+ for (i = 0; i < map->hashsize && res == 0; i++) { \
+ elem = HARRAY_ELEM(map->members, dtype *, i); \
+ if (cond) \
+ res = __##type##_add(tmp, elem); \
+ } \
+ if (res) { \
+ /* Failure, try again */ \
+ write_unlock_bh(&set->lock); \
+ harray_free(tmp->members); \
+ kfree(tmp); \
+ goto again; \
+ } \
+ \
+ /* Success at resizing! */ \
+ members = map->members; \
+ \
+ map->hashsize = tmp->hashsize; \
+ map->members = tmp->members; \
+ write_unlock_bh(&set->lock); \
+ \
+ harray_free(members); \
+ kfree(tmp); \
+ \
+ return 0; \
+}
+
+#define HASH_RETRY(type, dtype) \
+ HASH_RETRY0(type, dtype, *elem)
+
+#define HASH_RETRY2(type, dtype) \
+ HASH_RETRY0(type, dtype, elem->ip || elem->ip1)
+
+#define HASH_CREATE(type, dtype) \
+static int \
+type##_create(struct ip_set *set, const void *data, u_int32_t size) \
+{ \
+ const struct ip_set_req_##type##_create *req = data; \
+ struct ip_set_##type *map; \
+ uint16_t i; \
+ \
+ if (req->hashsize < 1) { \
+ ip_set_printk("hashsize too small"); \
+ return -ENOEXEC; \
+ } \
+ \
+ if (req->probes < 1) { \
+ ip_set_printk("probes too small"); \
+ return -ENOEXEC; \
+ } \
+ \
+ map = kmalloc(sizeof(struct ip_set_##type) \
+ + req->probes * sizeof(initval_t), GFP_KERNEL); \
+ if (!map) { \
+ DP("out of memory for %zu bytes", \
+ sizeof(struct ip_set_##type) \
+ + req->probes * sizeof(initval_t)); \
+ return -ENOMEM; \
+ } \
+ for (i = 0; i < req->probes; i++) \
+ get_random_bytes(((initval_t *) map->initval)+i, 4); \
+ map->elements = 0; \
+ map->hashsize = req->hashsize; \
+ map->probes = req->probes; \
+ map->resize = req->resize; \
+ if (__##type##_create(req, map)) { \
+ kfree(map); \
+ return -ENOEXEC; \
+ } \
+ map->members = harray_malloc(map->hashsize, sizeof(dtype), GFP_KERNEL);\
+ if (!map->members) { \
+ DP("out of memory for %zu bytes", map->hashsize * sizeof(dtype));\
+ kfree(map); \
+ return -ENOMEM; \
+ } \
+ \
+ set->data = map; \
+ return 0; \
+}
+
+#define HASH_DESTROY(type) \
+static void \
+type##_destroy(struct ip_set *set) \
+{ \
+ struct ip_set_##type *map = set->data; \
+ \
+ harray_free(map->members); \
+ kfree(map); \
+ \
+ set->data = NULL; \
+}
+
+#define HASH_FLUSH(type, dtype) \
+static void \
+type##_flush(struct ip_set *set) \
+{ \
+ struct ip_set_##type *map = set->data; \
+ harray_flush(map->members, map->hashsize, sizeof(dtype)); \
+ map->elements = 0; \
+}
+
+#define HASH_FLUSH_CIDR(type, dtype) \
+static void \
+type##_flush(struct ip_set *set) \
+{ \
+ struct ip_set_##type *map = set->data; \
+ harray_flush(map->members, map->hashsize, sizeof(dtype)); \
+ memset(map->cidr, 0, sizeof(map->cidr)); \
+ memset(map->nets, 0, sizeof(map->nets)); \
+ map->elements = 0; \
+}
+
+#define HASH_LIST_HEADER(type) \
+static void \
+type##_list_header(const struct ip_set *set, void *data) \
+{ \
+ const struct ip_set_##type *map = set->data; \
+ struct ip_set_req_##type##_create *header = data; \
+ \
+ header->hashsize = map->hashsize; \
+ header->probes = map->probes; \
+ header->resize = map->resize; \
+ __##type##_list_header(map, header); \
+}
+
+#define HASH_LIST_MEMBERS_SIZE(type, dtype) \
+static int \
+type##_list_members_size(const struct ip_set *set) \
+{ \
+ const struct ip_set_##type *map = set->data; \
+ \
+ return (map->hashsize * sizeof(dtype)); \
+}
+
+#define HASH_LIST_MEMBERS(type, dtype) \
+static void \
+type##_list_members(const struct ip_set *set, void *data) \
+{ \
+ const struct ip_set_##type *map = set->data; \
+ dtype *elem; \
+ uint32_t i; \
+ \
+ for (i = 0; i < map->hashsize; i++) { \
+ elem = HARRAY_ELEM(map->members, dtype *, i); \
+ ((dtype *)data)[i] = *elem; \
+ } \
+}
+
+#define HASH_LIST_MEMBERS_MEMCPY(type, dtype) \
+static void \
+type##_list_members(const struct ip_set *set, void *data) \
+{ \
+ const struct ip_set_##type *map = set->data; \
+ dtype *elem; \
+ uint32_t i; \
+ \
+ for (i = 0; i < map->hashsize; i++) { \
+ elem = HARRAY_ELEM(map->members, dtype *, i); \
+ memcpy((((dtype *)data)+i), elem, sizeof(dtype)); \
+ } \
+}
+
+#define IP_SET_RTYPE(type, __features) \
+struct ip_set_type ip_set_##type = { \
+ .typename = #type, \
+ .features = __features, \
+ .protocol_version = IP_SET_PROTOCOL_VERSION, \
+ .create = &type##_create, \
+ .retry = &type##_retry, \
+ .destroy = &type##_destroy, \
+ .flush = &type##_flush, \
+ .reqsize = sizeof(struct ip_set_req_##type), \
+ .addip = &type##_uadd, \
+ .addip_kernel = &type##_kadd, \
+ .delip = &type##_udel, \
+ .delip_kernel = &type##_kdel, \
+ .testip = &type##_utest, \
+ .testip_kernel = &type##_ktest, \
+ .header_size = sizeof(struct ip_set_req_##type##_create),\
+ .list_header = &type##_list_header, \
+ .list_members_size = &type##_list_members_size, \
+ .list_members = &type##_list_members, \
+ .me = THIS_MODULE, \
+};
+
+/* Helper functions */
+static inline void
+add_cidr_size(uint8_t *cidr, uint8_t size)
+{
+ uint8_t next;
+ int i;
+
+ for (i = 0; i < 30 && cidr[i]; i++) {
+ if (cidr[i] < size) {
+ next = cidr[i];
+ cidr[i] = size;
+ size = next;
+ }
+ }
+ if (i < 30)
+ cidr[i] = size;
+}
+
+static inline void
+del_cidr_size(uint8_t *cidr, uint8_t size)
+{
+ int i;
+
+ for (i = 0; i < 29 && cidr[i]; i++) {
+ if (cidr[i] == size)
+ cidr[i] = size = cidr[i+1];
+ }
+ cidr[29] = 0;
+}
+#else
+#include <arpa/inet.h>
+#endif /* __KERNEL */
+
+#ifndef UINT16_MAX
+#define UINT16_MAX 65535
+#endif
+
+static unsigned char shifts[] = {255, 253, 249, 241, 225, 193, 129, 1};
+
+static inline ip_set_ip_t
+pack_ip_cidr(ip_set_ip_t ip, unsigned char cidr)
+{
+ ip_set_ip_t addr, *paddr = &addr;
+ unsigned char n, t, *a;
+
+ addr = htonl(ip & (0xFFFFFFFF << (32 - (cidr))));
+#ifdef __KERNEL__
+ DP("ip:%u.%u.%u.%u/%u", NIPQUAD(addr), cidr);
+#endif
+ n = cidr / 8;
+ t = cidr % 8;
+ a = &((unsigned char *)paddr)[n];
+ *a = *a /(1 << (8 - t)) + shifts[t];
+#ifdef __KERNEL__
+ DP("n: %u, t: %u, a: %u", n, t, *a);
+ DP("ip:%u.%u.%u.%u/%u, %u.%u.%u.%u",
+ HIPQUAD(ip), cidr, NIPQUAD(addr));
+#endif
+
+ return ntohl(addr);
+}
+
+
+#endif /* __IP_SET_HASHES_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_iphash.h
@@ -0,0 +1,30 @@
+#ifndef __IP_SET_IPHASH_H
+#define __IP_SET_IPHASH_H
+
+#include <linux/netfilter_ipv4/ip_set.h>
+#include <linux/netfilter_ipv4/ip_set_hashes.h>
+
+#define SETTYPE_NAME "iphash"
+
+struct ip_set_iphash {
+ ip_set_ip_t *members; /* the iphash proper */
+ uint32_t elements; /* number of elements */
+ uint32_t hashsize; /* hash size */
+ uint16_t probes; /* max number of probes */
+ uint16_t resize; /* resize factor in percent */
+ ip_set_ip_t netmask; /* netmask */
+ initval_t initval[0]; /* initvals for jhash_1word */
+};
+
+struct ip_set_req_iphash_create {
+ uint32_t hashsize;
+ uint16_t probes;
+ uint16_t resize;
+ ip_set_ip_t netmask;
+};
+
+struct ip_set_req_iphash {
+ ip_set_ip_t ip;
+};
+
+#endif /* __IP_SET_IPHASH_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_ipmap.h
@@ -0,0 +1,57 @@
+#ifndef __IP_SET_IPMAP_H
+#define __IP_SET_IPMAP_H
+
+#include <linux/netfilter_ipv4/ip_set.h>
+#include <linux/netfilter_ipv4/ip_set_bitmaps.h>
+
+#define SETTYPE_NAME "ipmap"
+
+struct ip_set_ipmap {
+ void *members; /* the ipmap proper */
+ ip_set_ip_t first_ip; /* host byte order, included in range */
+ ip_set_ip_t last_ip; /* host byte order, included in range */
+ ip_set_ip_t netmask; /* subnet netmask */
+ ip_set_ip_t sizeid; /* size of set in IPs */
+ ip_set_ip_t hosts; /* number of hosts in a subnet */
+ u_int32_t size; /* size of the ipmap proper */
+};
+
+struct ip_set_req_ipmap_create {
+ ip_set_ip_t from;
+ ip_set_ip_t to;
+ ip_set_ip_t netmask;
+};
+
+struct ip_set_req_ipmap {
+ ip_set_ip_t ip;
+};
+
+static inline unsigned int
+mask_to_bits(ip_set_ip_t mask)
+{
+ unsigned int bits = 32;
+ ip_set_ip_t maskaddr;
+
+ if (mask == 0xFFFFFFFF)
+ return bits;
+
+ maskaddr = 0xFFFFFFFE;
+ while (--bits > 0 && maskaddr != mask)
+ maskaddr <<= 1;
+
+ return bits;
+}
+
+static inline ip_set_ip_t
+range_to_mask(ip_set_ip_t from, ip_set_ip_t to, unsigned int *bits)
+{
+ ip_set_ip_t mask = 0xFFFFFFFE;
+
+ *bits = 32;
+ while (--(*bits) > 0 && mask && (to & mask) != from)
+ mask <<= 1;
+
+ return mask;
+}
+
+#endif /* __IP_SET_IPMAP_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_ipporthash.h
@@ -0,0 +1,33 @@
+#ifndef __IP_SET_IPPORTHASH_H
+#define __IP_SET_IPPORTHASH_H
+
+#include <linux/netfilter_ipv4/ip_set.h>
+#include <linux/netfilter_ipv4/ip_set_hashes.h>
+
+#define SETTYPE_NAME "ipporthash"
+
+struct ip_set_ipporthash {
+ ip_set_ip_t *members; /* the ipporthash proper */
+ uint32_t elements; /* number of elements */
+ uint32_t hashsize; /* hash size */
+ uint16_t probes; /* max number of probes */
+ uint16_t resize; /* resize factor in percent */
+ ip_set_ip_t first_ip; /* host byte order, included in range */
+ ip_set_ip_t last_ip; /* host byte order, included in range */
+ initval_t initval[0]; /* initvals for jhash_1word */
+};
+
+struct ip_set_req_ipporthash_create {
+ uint32_t hashsize;
+ uint16_t probes;
+ uint16_t resize;
+ ip_set_ip_t from;
+ ip_set_ip_t to;
+};
+
+struct ip_set_req_ipporthash {
+ ip_set_ip_t ip;
+ ip_set_ip_t port;
+};
+
+#endif /* __IP_SET_IPPORTHASH_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_ipportiphash.h
@@ -0,0 +1,39 @@
+#ifndef __IP_SET_IPPORTIPHASH_H
+#define __IP_SET_IPPORTIPHASH_H
+
+#include <linux/netfilter_ipv4/ip_set.h>
+#include <linux/netfilter_ipv4/ip_set_hashes.h>
+
+#define SETTYPE_NAME "ipportiphash"
+
+struct ipportip {
+ ip_set_ip_t ip;
+ ip_set_ip_t ip1;
+};
+
+struct ip_set_ipportiphash {
+ struct ipportip *members; /* the ipportip proper */
+ uint32_t elements; /* number of elements */
+ uint32_t hashsize; /* hash size */
+ uint16_t probes; /* max number of probes */
+ uint16_t resize; /* resize factor in percent */
+ ip_set_ip_t first_ip; /* host byte order, included in range */
+ ip_set_ip_t last_ip; /* host byte order, included in range */
+ initval_t initval[0]; /* initvals for jhash_1word */
+};
+
+struct ip_set_req_ipportiphash_create {
+ uint32_t hashsize;
+ uint16_t probes;
+ uint16_t resize;
+ ip_set_ip_t from;
+ ip_set_ip_t to;
+};
+
+struct ip_set_req_ipportiphash {
+ ip_set_ip_t ip;
+ ip_set_ip_t port;
+ ip_set_ip_t ip1;
+};
+
+#endif /* __IP_SET_IPPORTIPHASH_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_ipportnethash.h
@@ -0,0 +1,42 @@
+#ifndef __IP_SET_IPPORTNETHASH_H
+#define __IP_SET_IPPORTNETHASH_H
+
+#include <linux/netfilter_ipv4/ip_set.h>
+#include <linux/netfilter_ipv4/ip_set_hashes.h>
+
+#define SETTYPE_NAME "ipportnethash"
+
+struct ipportip {
+ ip_set_ip_t ip;
+ ip_set_ip_t ip1;
+};
+
+struct ip_set_ipportnethash {
+ struct ipportip *members; /* the ipportip proper */
+ uint32_t elements; /* number of elements */
+ uint32_t hashsize; /* hash size */
+ uint16_t probes; /* max number of probes */
+ uint16_t resize; /* resize factor in percent */
+ ip_set_ip_t first_ip; /* host byte order, included in range */
+ ip_set_ip_t last_ip; /* host byte order, included in range */
+ uint8_t cidr[30]; /* CIDR sizes */
+ uint16_t nets[30]; /* nr of nets by CIDR sizes */
+ initval_t initval[0]; /* initvals for jhash_1word */
+};
+
+struct ip_set_req_ipportnethash_create {
+ uint32_t hashsize;
+ uint16_t probes;
+ uint16_t resize;
+ ip_set_ip_t from;
+ ip_set_ip_t to;
+};
+
+struct ip_set_req_ipportnethash {
+ ip_set_ip_t ip;
+ ip_set_ip_t port;
+ ip_set_ip_t ip1;
+ uint8_t cidr;
+};
+
+#endif /* __IP_SET_IPPORTNETHASH_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_iptree.h
@@ -0,0 +1,39 @@
+#ifndef __IP_SET_IPTREE_H
+#define __IP_SET_IPTREE_H
+
+#include <linux/netfilter_ipv4/ip_set.h>
+
+#define SETTYPE_NAME "iptree"
+
+struct ip_set_iptreed {
+ unsigned long expires[256]; /* x.x.x.ADDR */
+};
+
+struct ip_set_iptreec {
+ struct ip_set_iptreed *tree[256]; /* x.x.ADDR.* */
+};
+
+struct ip_set_iptreeb {
+ struct ip_set_iptreec *tree[256]; /* x.ADDR.*.* */
+};
+
+struct ip_set_iptree {
+ unsigned int timeout;
+ unsigned int gc_interval;
+#ifdef __KERNEL__
+ uint32_t elements; /* number of elements */
+ struct timer_list gc;
+ struct ip_set_iptreeb *tree[256]; /* ADDR.*.*.* */
+#endif
+};
+
+struct ip_set_req_iptree_create {
+ unsigned int timeout;
+};
+
+struct ip_set_req_iptree {
+ ip_set_ip_t ip;
+ unsigned int timeout;
+};
+
+#endif /* __IP_SET_IPTREE_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_iptreemap.h
@@ -0,0 +1,40 @@
+#ifndef __IP_SET_IPTREEMAP_H
+#define __IP_SET_IPTREEMAP_H
+
+#include <linux/netfilter_ipv4/ip_set.h>
+
+#define SETTYPE_NAME "iptreemap"
+
+#ifdef __KERNEL__
+struct ip_set_iptreemap_d {
+ unsigned char bitmap[32]; /* x.x.x.y */
+};
+
+struct ip_set_iptreemap_c {
+ struct ip_set_iptreemap_d *tree[256]; /* x.x.y.x */
+};
+
+struct ip_set_iptreemap_b {
+ struct ip_set_iptreemap_c *tree[256]; /* x.y.x.x */
+ unsigned char dirty[32];
+};
+#endif
+
+struct ip_set_iptreemap {
+ unsigned int gc_interval;
+#ifdef __KERNEL__
+ struct timer_list gc;
+ struct ip_set_iptreemap_b *tree[256]; /* y.x.x.x */
+#endif
+};
+
+struct ip_set_req_iptreemap_create {
+ unsigned int gc_interval;
+};
+
+struct ip_set_req_iptreemap {
+ ip_set_ip_t ip;
+ ip_set_ip_t end;
+};
+
+#endif /* __IP_SET_IPTREEMAP_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_jhash.h
@@ -0,0 +1,157 @@
+#ifndef _LINUX_JHASH_H
+#define _LINUX_JHASH_H
+
+/* jhash.h: Jenkins hash support.
+ *
+ * Copyright (C) 2006. Bob Jenkins (bob_jenkins@burtleburtle.net)
+ *
+ * http://burtleburtle.net/bob/hash/
+ *
+ * These are the credits from Bob's sources:
+ *
+ * lookup3.c, by Bob Jenkins, May 2006, Public Domain.
+ *
+ * These are functions for producing 32-bit hashes for hash table lookup.
+ * hashword(), hashlittle(), hashlittle2(), hashbig(), mix(), and final()
+ * are externally useful functions. Routines to test the hash are included
+ * if SELF_TEST is defined. You can use this free for any purpose. It's in
+ * the public domain. It has no warranty.
+ *
+ * Copyright (C) 2009 Jozsef Kadlecsik (kadlec@blackhole.kfki.hu)
+ *
+ * I've modified Bob's hash to be useful in the Linux kernel, and
+ * any bugs present are my fault. Jozsef
+ */
+
+#define __rot(x,k) (((x)<<(k)) | ((x)>>(32-(k))))
+
+/* __jhash_mix - mix 3 32-bit values reversibly. */
+#define __jhash_mix(a,b,c) \
+{ \
+ a -= c; a ^= __rot(c, 4); c += b; \
+ b -= a; b ^= __rot(a, 6); a += c; \
+ c -= b; c ^= __rot(b, 8); b += a; \
+ a -= c; a ^= __rot(c,16); c += b; \
+ b -= a; b ^= __rot(a,19); a += c; \
+ c -= b; c ^= __rot(b, 4); b += a; \
+}
+
+/* __jhash_final - final mixing of 3 32-bit values (a,b,c) into c */
+#define __jhash_final(a,b,c) \
+{ \
+ c ^= b; c -= __rot(b,14); \
+ a ^= c; a -= __rot(c,11); \
+ b ^= a; b -= __rot(a,25); \
+ c ^= b; c -= __rot(b,16); \
+ a ^= c; a -= __rot(c,4); \
+ b ^= a; b -= __rot(a,14); \
+ c ^= b; c -= __rot(b,24); \
+}
+
+/* The golden ration: an arbitrary value */
+#define JHASH_GOLDEN_RATIO 0xdeadbeef
+
+/* The most generic version, hashes an arbitrary sequence
+ * of bytes. No alignment or length assumptions are made about
+ * the input key. The result depends on endianness.
+ */
+static inline u32 jhash(const void *key, u32 length, u32 initval)
+{
+ u32 a,b,c;
+ const u8 *k = key;
+
+ /* Set up the internal state */
+ a = b = c = JHASH_GOLDEN_RATIO + length + initval;
+
+ /* all but the last block: affect some 32 bits of (a,b,c) */
+ while (length > 12) {
+ a += (k[0] + ((u32)k[1]<<8) + ((u32)k[2]<<16) + ((u32)k[3]<<24));
+ b += (k[4] + ((u32)k[5]<<8) + ((u32)k[6]<<16) + ((u32)k[7]<<24));
+ c += (k[8] + ((u32)k[9]<<8) + ((u32)k[10]<<16) + ((u32)k[11]<<24));
+ __jhash_mix(a, b, c);
+ length -= 12;
+ k += 12;
+ }
+
+ /* last block: affect all 32 bits of (c) */
+ /* all the case statements fall through */
+ switch (length) {
+ case 12: c += (u32)k[11]<<24;
+ case 11: c += (u32)k[10]<<16;
+ case 10: c += (u32)k[9]<<8;
+ case 9 : c += k[8];
+ case 8 : b += (u32)k[7]<<24;
+ case 7 : b += (u32)k[6]<<16;
+ case 6 : b += (u32)k[5]<<8;
+ case 5 : b += k[4];
+ case 4 : a += (u32)k[3]<<24;
+ case 3 : a += (u32)k[2]<<16;
+ case 2 : a += (u32)k[1]<<8;
+ case 1 : a += k[0];
+ __jhash_final(a, b, c);
+ case 0 :
+ break;
+ }
+
+ return c;
+}
+
+/* A special optimized version that handles 1 or more of u32s.
+ * The length parameter here is the number of u32s in the key.
+ */
+static inline u32 jhash2(const u32 *k, u32 length, u32 initval)
+{
+ u32 a, b, c;
+
+ /* Set up the internal state */
+ a = b = c = JHASH_GOLDEN_RATIO + (length<<2) + initval;
+
+ /* handle most of the key */
+ while (length > 3) {
+ a += k[0];
+ b += k[1];
+ c += k[2];
+ __jhash_mix(a, b, c);
+ length -= 3;
+ k += 3;
+ }
+
+ /* handle the last 3 u32's */
+ /* all the case statements fall through */
+ switch (length) {
+ case 3: c += k[2];
+ case 2: b += k[1];
+ case 1: a += k[0];
+ __jhash_final(a, b, c);
+ case 0: /* case 0: nothing left to add */
+ break;
+ }
+
+ return c;
+}
+
+/* A special ultra-optimized versions that knows they are hashing exactly
+ * 3, 2 or 1 word(s).
+ */
+static inline u32 jhash_3words(u32 a, u32 b, u32 c, u32 initval)
+{
+ a += JHASH_GOLDEN_RATIO + initval;
+ b += JHASH_GOLDEN_RATIO + initval;
+ c += JHASH_GOLDEN_RATIO + initval;
+
+ __jhash_final(a, b, c);
+
+ return c;
+}
+
+static inline u32 jhash_2words(u32 a, u32 b, u32 initval)
+{
+ return jhash_3words(0, a, b, initval);
+}
+
+static inline u32 jhash_1word(u32 a, u32 initval)
+{
+ return jhash_3words(0, 0, a, initval);
+}
+
+#endif /* _LINUX_JHASH_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_macipmap.h
@@ -0,0 +1,39 @@
+#ifndef __IP_SET_MACIPMAP_H
+#define __IP_SET_MACIPMAP_H
+
+#include <linux/netfilter_ipv4/ip_set.h>
+#include <linux/netfilter_ipv4/ip_set_bitmaps.h>
+
+#define SETTYPE_NAME "macipmap"
+
+/* general flags */
+#define IPSET_MACIP_MATCHUNSET 1
+
+/* per ip flags */
+#define IPSET_MACIP_ISSET 1
+
+struct ip_set_macipmap {
+ void *members; /* the macipmap proper */
+ ip_set_ip_t first_ip; /* host byte order, included in range */
+ ip_set_ip_t last_ip; /* host byte order, included in range */
+ u_int32_t flags;
+ u_int32_t size; /* size of the ipmap proper */
+};
+
+struct ip_set_req_macipmap_create {
+ ip_set_ip_t from;
+ ip_set_ip_t to;
+ u_int32_t flags;
+};
+
+struct ip_set_req_macipmap {
+ ip_set_ip_t ip;
+ unsigned char ethernet[ETH_ALEN];
+};
+
+struct ip_set_macip {
+ unsigned short match;
+ unsigned char ethernet[ETH_ALEN];
+};
+
+#endif /* __IP_SET_MACIPMAP_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_malloc.h
@@ -0,0 +1,153 @@
+#ifndef _IP_SET_MALLOC_H
+#define _IP_SET_MALLOC_H
+
+#ifdef __KERNEL__
+#include <linux/vmalloc.h>
+
+static size_t max_malloc_size = 0, max_page_size = 0;
+static size_t default_max_malloc_size = 131072; /* Guaranteed: slab.c */
+
+static inline int init_max_page_size(void)
+{
+/* Compatibility glues to support 2.4.36 */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+#define __GFP_NOWARN 0
+
+ /* Guaranteed: slab.c */
+ max_malloc_size = max_page_size = default_max_malloc_size;
+#else
+ size_t page_size = 0;
+
+#define CACHE(x) if (max_page_size == 0 || x < max_page_size) \
+ page_size = x;
+#include <linux/kmalloc_sizes.h>
+#undef CACHE
+ if (page_size) {
+ if (max_malloc_size == 0)
+ max_malloc_size = page_size;
+
+ max_page_size = page_size;
+
+ return 1;
+ }
+#endif
+ return 0;
+}
+
+struct harray {
+ size_t max_elements;
+ void *arrays[0];
+};
+
+static inline void *
+__harray_malloc(size_t hashsize, size_t typesize, gfp_t flags)
+{
+ struct harray *harray;
+ size_t max_elements, size, i, j;
+
+ BUG_ON(max_page_size == 0);
+
+ if (typesize > max_page_size)
+ return NULL;
+
+ max_elements = max_page_size/typesize;
+ size = hashsize/max_elements;
+ if (hashsize % max_elements)
+ size++;
+
+ /* Last pointer signals end of arrays */
+ harray = kmalloc(sizeof(struct harray) + (size + 1) * sizeof(void *),
+ flags);
+
+ if (!harray)
+ return NULL;
+
+ for (i = 0; i < size - 1; i++) {
+ harray->arrays[i] = kmalloc(max_elements * typesize, flags);
+ if (!harray->arrays[i])
+ goto undo;
+ memset(harray->arrays[i], 0, max_elements * typesize);
+ }
+ harray->arrays[i] = kmalloc((hashsize - i * max_elements) * typesize,
+ flags);
+ if (!harray->arrays[i])
+ goto undo;
+ memset(harray->arrays[i], 0, (hashsize - i * max_elements) * typesize);
+
+ harray->max_elements = max_elements;
+ harray->arrays[size] = NULL;
+
+ return (void *)harray;
+
+ undo:
+ for (j = 0; j < i; j++) {
+ kfree(harray->arrays[j]);
+ }
+ kfree(harray);
+ return NULL;
+}
+
+static inline void *
+harray_malloc(size_t hashsize, size_t typesize, gfp_t flags)
+{
+ void *harray;
+
+ do {
+ harray = __harray_malloc(hashsize, typesize, flags|__GFP_NOWARN);
+ } while (harray == NULL && init_max_page_size());
+
+ return harray;
+}
+
+static inline void harray_free(void *h)
+{
+ struct harray *harray = (struct harray *) h;
+ size_t i;
+
+ for (i = 0; harray->arrays[i] != NULL; i++)
+ kfree(harray->arrays[i]);
+ kfree(harray);
+}
+
+static inline void harray_flush(void *h, size_t hashsize, size_t typesize)
+{
+ struct harray *harray = (struct harray *) h;
+ size_t i;
+
+ for (i = 0; harray->arrays[i+1] != NULL; i++)
+ memset(harray->arrays[i], 0, harray->max_elements * typesize);
+ memset(harray->arrays[i], 0,
+ (hashsize - i * harray->max_elements) * typesize);
+}
+
+#define HARRAY_ELEM(h, type, which) \
+({ \
+ struct harray *__h = (struct harray *)(h); \
+ ((type)((__h)->arrays[(which)/(__h)->max_elements]) \
+ + (which)%(__h)->max_elements); \
+})
+
+/* General memory allocation and deallocation */
+static inline void * ip_set_malloc(size_t bytes)
+{
+ BUG_ON(max_malloc_size == 0);
+
+ if (bytes > default_max_malloc_size)
+ return vmalloc(bytes);
+ else
+ return kmalloc(bytes, GFP_KERNEL | __GFP_NOWARN);
+}
+
+static inline void ip_set_free(void * data, size_t bytes)
+{
+ BUG_ON(max_malloc_size == 0);
+
+ if (bytes > default_max_malloc_size)
+ vfree(data);
+ else
+ kfree(data);
+}
+
+#endif /* __KERNEL__ */
+
+#endif /*_IP_SET_MALLOC_H*/
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_nethash.h
@@ -0,0 +1,31 @@
+#ifndef __IP_SET_NETHASH_H
+#define __IP_SET_NETHASH_H
+
+#include <linux/netfilter_ipv4/ip_set.h>
+#include <linux/netfilter_ipv4/ip_set_hashes.h>
+
+#define SETTYPE_NAME "nethash"
+
+struct ip_set_nethash {
+ ip_set_ip_t *members; /* the nethash proper */
+ uint32_t elements; /* number of elements */
+ uint32_t hashsize; /* hash size */
+ uint16_t probes; /* max number of probes */
+ uint16_t resize; /* resize factor in percent */
+ uint8_t cidr[30]; /* CIDR sizes */
+ uint16_t nets[30]; /* nr of nets by CIDR sizes */
+ initval_t initval[0]; /* initvals for jhash_1word */
+};
+
+struct ip_set_req_nethash_create {
+ uint32_t hashsize;
+ uint16_t probes;
+ uint16_t resize;
+};
+
+struct ip_set_req_nethash {
+ ip_set_ip_t ip;
+ uint8_t cidr;
+};
+
+#endif /* __IP_SET_NETHASH_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_portmap.h
@@ -0,0 +1,25 @@
+#ifndef __IP_SET_PORTMAP_H
+#define __IP_SET_PORTMAP_H
+
+#include <linux/netfilter_ipv4/ip_set.h>
+#include <linux/netfilter_ipv4/ip_set_bitmaps.h>
+
+#define SETTYPE_NAME "portmap"
+
+struct ip_set_portmap {
+ void *members; /* the portmap proper */
+ ip_set_ip_t first_ip; /* host byte order, included in range */
+ ip_set_ip_t last_ip; /* host byte order, included in range */
+ u_int32_t size; /* size of the ipmap proper */
+};
+
+struct ip_set_req_portmap_create {
+ ip_set_ip_t from;
+ ip_set_ip_t to;
+};
+
+struct ip_set_req_portmap {
+ ip_set_ip_t ip;
+};
+
+#endif /* __IP_SET_PORTMAP_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ip_set_setlist.h
@@ -0,0 +1,26 @@
+#ifndef __IP_SET_SETLIST_H
+#define __IP_SET_SETLIST_H
+
+#include <linux/netfilter_ipv4/ip_set.h>
+
+#define SETTYPE_NAME "setlist"
+
+#define IP_SET_SETLIST_ADD_AFTER 0
+#define IP_SET_SETLIST_ADD_BEFORE 1
+
+struct ip_set_setlist {
+ uint8_t size;
+ ip_set_id_t index[0];
+};
+
+struct ip_set_req_setlist_create {
+ uint8_t size;
+};
+
+struct ip_set_req_setlist {
+ char name[IP_SET_MAXNAMELEN];
+ char ref[IP_SET_MAXNAMELEN];
+ uint8_t before;
+};
+
+#endif /* __IP_SET_SETLIST_H */
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ipt_set.h
@@ -0,0 +1,21 @@
+#ifndef _IPT_SET_H
+#define _IPT_SET_H
+
+#include <linux/netfilter_ipv4/ip_set.h>
+
+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*/
--- /dev/null
+++ b/net/ipv4/netfilter/ip_set.c
@@ -0,0 +1,2076 @@
+/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
+ * Patrick Schaaf <bof@bof.de>
+ * Copyright (C) 2003-2004 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.
+ */
+
+/* Kernel module for IP set management */
+
+#include <linux/version.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+#include <linux/config.h>
+#endif
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kmod.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+#include <linux/random.h>
+#include <linux/netfilter_ipv4/ip_set_jhash.h>
+#include <linux/errno.h>
+#include <linux/capability.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
+#include <asm/semaphore.h>
+#else
+#include <linux/semaphore.h>
+#endif
+#include <linux/spinlock.h>
+
+#define ASSERT_READ_LOCK(x)
+#define ASSERT_WRITE_LOCK(x)
+#include <linux/netfilter.h>
+#include <linux/netfilter_ipv4/ip_set.h>
+
+static struct list_head set_type_list; /* all registered sets */
+static struct ip_set **ip_set_list; /* all individual sets */
+static DEFINE_RWLOCK(ip_set_lock); /* protects the lists and the hash */
+static DECLARE_MUTEX(ip_set_app_mutex); /* serializes user access */
+static ip_set_id_t ip_set_max = CONFIG_IP_NF_SET_MAX;
+static ip_set_id_t ip_set_bindings_hash_size = CONFIG_IP_NF_SET_HASHSIZE;
+static struct list_head *ip_set_hash; /* hash of bindings */
+static unsigned int ip_set_hash_random; /* random seed */
+
+#define SETNAME_EQ(a,b) (strncmp(a,b,IP_SET_MAXNAMELEN) == 0)
+
+/*
+ * Sets are identified either by the index in ip_set_list or by id.
+ * The id never changes and is used to find a key in the hash.
+ * The index may change by swapping and used at all other places
+ * (set/SET netfilter modules, binding value, etc.)
+ *
+ * Userspace requests are serialized by ip_set_mutex and sets can
+ * be deleted only from userspace. Therefore ip_set_list locking
+ * must obey the following rules:
+ *
+ * - kernel requests: read and write locking mandatory
+ * - user requests: read locking optional, write locking mandatory
+ */
+
+static inline void
+__ip_set_get(ip_set_id_t index)
+{
+ atomic_inc(&ip_set_list[index]->ref);
+}
+
+static inline void
+__ip_set_put(ip_set_id_t index)
+{
+ atomic_dec(&ip_set_list[index]->ref);
+}
+
+/*
+ * Binding routines
+ */
+
+static inline struct ip_set_hash *
+__ip_set_find(u_int32_t key, ip_set_id_t id, ip_set_ip_t ip)
+{
+ struct ip_set_hash *set_hash;
+
+ list_for_each_entry(set_hash, &ip_set_hash[key], list)
+ if (set_hash->id == id && set_hash->ip == ip)
+ return set_hash;
+
+ return NULL;
+}
+
+static ip_set_id_t
+ip_set_find_in_hash(ip_set_id_t id, ip_set_ip_t ip)
+{
+ u_int32_t key = jhash_2words(id, ip, ip_set_hash_random)
+ % ip_set_bindings_hash_size;
+ struct ip_set_hash *set_hash;
+
+ ASSERT_READ_LOCK(&ip_set_lock);
+ IP_SET_ASSERT(ip_set_list[id]);
+ DP("set: %s, ip: %u.%u.%u.%u", ip_set_list[id]->name, HIPQUAD(ip));
+
+ set_hash = __ip_set_find(key, id, ip);
+
+ DP("set: %s, ip: %u.%u.%u.%u, binding: %s", ip_set_list[id]->name,
+ HIPQUAD(ip),
+ set_hash != NULL ? ip_set_list[set_hash->binding]->name : "");
+
+ return (set_hash != NULL ? set_hash->binding : IP_SET_INVALID_ID);
+}
+
+static inline void
+__set_hash_del(struct ip_set_hash *set_hash)
+{
+ ASSERT_WRITE_LOCK(&ip_set_lock);
+ IP_SET_ASSERT(ip_set_list[set_hash->binding]);
+
+ __ip_set_put(set_hash->binding);
+ list_del(&set_hash->list);
+ kfree(set_hash);
+}
+
+static int
+ip_set_hash_del(ip_set_id_t id, ip_set_ip_t ip)
+{
+ u_int32_t key = jhash_2words(id, ip, ip_set_hash_random)
+ % ip_set_bindings_hash_size;
+ struct ip_set_hash *set_hash;
+
+ IP_SET_ASSERT(ip_set_list[id]);
+ DP("set: %s, ip: %u.%u.%u.%u", ip_set_list[id]->name, HIPQUAD(ip));
+ write_lock_bh(&ip_set_lock);
+ set_hash = __ip_set_find(key, id, ip);
+ DP("set: %s, ip: %u.%u.%u.%u, binding: %s", ip_set_list[id]->name,
+ HIPQUAD(ip),
+ set_hash != NULL ? ip_set_list[set_hash->binding]->name : "");
+
+ if (set_hash != NULL)
+ __set_hash_del(set_hash);
+ write_unlock_bh(&ip_set_lock);
+ return 0;
+}
+
+static int
+ip_set_hash_add(ip_set_id_t id, ip_set_ip_t ip, ip_set_id_t binding)
+{
+ u_int32_t key = jhash_2words(id, ip, ip_set_hash_random)
+ % ip_set_bindings_hash_size;
+ struct ip_set_hash *set_hash;
+ int ret = 0;
+
+ IP_SET_ASSERT(ip_set_list[id]);
+ IP_SET_ASSERT(ip_set_list[binding]);
+ DP("set: %s, ip: %u.%u.%u.%u, binding: %s", ip_set_list[id]->name,
+ HIPQUAD(ip), ip_set_list[binding]->name);
+ write_lock_bh(&ip_set_lock);
+ set_hash = __ip_set_find(key, id, ip);
+ if (!set_hash) {
+ set_hash = kmalloc(sizeof(struct ip_set_hash), GFP_ATOMIC);
+ if (!set_hash) {
+ ret = -ENOMEM;
+ goto unlock;
+ }
+ INIT_LIST_HEAD(&set_hash->list);
+ set_hash->id = id;
+ set_hash->ip = ip;
+ list_add(&set_hash->list, &ip_set_hash[key]);
+ } else {
+ IP_SET_ASSERT(ip_set_list[set_hash->binding]);
+ DP("overwrite binding: %s",
+ ip_set_list[set_hash->binding]->name);
+ __ip_set_put(set_hash->binding);
+ }
+ set_hash->binding = binding;
+ __ip_set_get(set_hash->binding);
+ DP("stored: key %u, id %u (%s), ip %u.%u.%u.%u, binding %u (%s)",
+ key, id, ip_set_list[id]->name,
+ HIPQUAD(ip), binding, ip_set_list[binding]->name);
+ unlock:
+ write_unlock_bh(&ip_set_lock);
+ return ret;
+}
+
+#define FOREACH_HASH_DO(fn, args...) \
+({ \
+ ip_set_id_t __key; \
+ struct ip_set_hash *__set_hash; \
+ \
+ for (__key = 0; __key < ip_set_bindings_hash_size; __key++) { \
+ list_for_each_entry(__set_hash, &ip_set_hash[__key], list) \
+ fn(__set_hash , ## args); \
+ } \
+})
+
+#define FOREACH_HASH_RW_DO(fn, args...) \
+({ \
+ ip_set_id_t __key; \
+ struct ip_set_hash *__set_hash, *__n; \
+ \
+ ASSERT_WRITE_LOCK(&ip_set_lock); \
+ for (__key = 0; __key < ip_set_bindings_hash_size; __key++) { \
+ list_for_each_entry_safe(__set_hash, __n, &ip_set_hash[__key], list)\
+ fn(__set_hash , ## args); \
+ } \
+})
+
+/* Add, del and test set entries from kernel */
+
+#define follow_bindings(index, set, ip) \
+((index = ip_set_find_in_hash((set)->id, ip)) != IP_SET_INVALID_ID \
+ || (index = (set)->binding) != IP_SET_INVALID_ID)
+
+int
+ip_set_testip_kernel(ip_set_id_t index,
+ const struct sk_buff *skb,
+ const u_int32_t *flags)
+{
+ struct ip_set *set;
+ ip_set_ip_t ip;
+ int res;
+ unsigned char i = 0;
+
+ IP_SET_ASSERT(flags[i]);
+ read_lock_bh(&ip_set_lock);
+ do {
+ set = ip_set_list[index];
+ IP_SET_ASSERT(set);
+ DP("set %s, index %u", set->name, index);
+ read_lock_bh(&set->lock);
+ res = set->type->testip_kernel(set, skb, &ip, flags, i++);
+ read_unlock_bh(&set->lock);
+ i += !!(set->type->features & IPSET_DATA_DOUBLE);
+ } while (res > 0
+ && flags[i]
+ && follow_bindings(index, set, ip));
+ read_unlock_bh(&ip_set_lock);
+
+ return (res < 0 ? 0 : res);
+}
+
+int
+ip_set_addip_kernel(ip_set_id_t index,
+ const struct sk_buff *skb,
+ const u_int32_t *flags)
+{
+ struct ip_set *set;
+ ip_set_ip_t ip;
+ int res;
+ unsigned char i = 0;
+
+ IP_SET_ASSERT(flags[i]);
+ retry:
+ read_lock_bh(&ip_set_lock);
+ do {
+ set = ip_set_list[index];
+ IP_SET_ASSERT(set);
+ DP("set %s, index %u", set->name, index);
+ write_lock_bh(&set->lock);
+ res = set->type->addip_kernel(set, skb, &ip, flags, i++);
+ write_unlock_bh(&set->lock);
+ i += !!(set->type->features & IPSET_DATA_DOUBLE);
+ } while ((res == 0 || res == -EEXIST)
+ && flags[i]
+ && follow_bindings(index, set, ip));
+ read_unlock_bh(&ip_set_lock);
+
+ if (res == -EAGAIN
+ && set->type->retry
+ && (res = set->type->retry(set)) == 0)
+ goto retry;
+
+ return res;
+}
+
+int
+ip_set_delip_kernel(ip_set_id_t index,
+ const struct sk_buff *skb,
+ const u_int32_t *flags)
+{
+ struct ip_set *set;
+ ip_set_ip_t ip;
+ int res;
+ unsigned char i = 0;
+
+ IP_SET_ASSERT(flags[i]);
+ read_lock_bh(&ip_set_lock);
+ do {
+ set = ip_set_list[index];
+ IP_SET_ASSERT(set);
+ DP("set %s, index %u", set->name, index);
+ write_lock_bh(&set->lock);
+ res = set->type->delip_kernel(set, skb, &ip, flags, i++);
+ write_unlock_bh(&set->lock);
+ i += !!(set->type->features & IPSET_DATA_DOUBLE);
+ } while ((res == 0 || res == -EEXIST)
+ && flags[i]
+ && follow_bindings(index, set, ip));
+ read_unlock_bh(&ip_set_lock);
+
+ return res;
+}
+
+/* Register and deregister settype */
+
+static inline struct ip_set_type *
+find_set_type(const char *name)
+{
+ struct ip_set_type *set_type;
+
+ list_for_each_entry(set_type, &set_type_list, list)
+ if (!strncmp(set_type->typename, name, IP_SET_MAXNAMELEN - 1))
+ return set_type;
+ return NULL;
+}
+
+int
+ip_set_register_set_type(struct ip_set_type *set_type)
+{
+ int ret = 0;
+
+ if (set_type->protocol_version != IP_SET_PROTOCOL_VERSION) {
+ ip_set_printk("'%s' uses wrong protocol version %u (want %u)",
+ set_type->typename,
+ set_type->protocol_version,
+ IP_SET_PROTOCOL_VERSION);
+ return -EINVAL;
+ }
+
+ write_lock_bh(&ip_set_lock);
+ if (find_set_type(set_type->typename)) {
+ /* Duplicate! */
+ ip_set_printk("'%s' already registered!",
+ set_type->typename);
+ ret = -EINVAL;
+ goto unlock;
+ }
+ if (!try_module_get(THIS_MODULE)) {
+ ret = -EFAULT;
+ goto unlock;
+ }
+ list_add(&set_type->list, &set_type_list);
+ DP("'%s' registered.", set_type->typename);
+ unlock:
+ write_unlock_bh(&ip_set_lock);
+ return ret;
+}
+
+void
+ip_set_unregister_set_type(struct ip_set_type *set_type)
+{
+ write_lock_bh(&ip_set_lock);
+ if (!find_set_type(set_type->typename)) {
+ ip_set_printk("'%s' not registered?",
+ set_type->typename);
+ goto unlock;
+ }
+ list_del(&set_type->list);
+ module_put(THIS_MODULE);
+ DP("'%s' unregistered.", set_type->typename);
+ unlock:
+ write_unlock_bh(&ip_set_lock);
+
+}
+
+ip_set_id_t
+__ip_set_get_byname(const char *name, struct ip_set **set)
+{
+ ip_set_id_t i, index = IP_SET_INVALID_ID;
+
+ for (i = 0; i < ip_set_max; i++) {
+ if (ip_set_list[i] != NULL
+ && SETNAME_EQ(ip_set_list[i]->name, name)) {
+ __ip_set_get(i);
+ index = i;
+ *set = ip_set_list[i];
+ break;
+ }
+ }
+ return index;
+}
+
+void __ip_set_put_byindex(ip_set_id_t index)
+{
+ if (ip_set_list[index])
+ __ip_set_put(index);
+}
+
+/*
+ * Userspace routines
+ */
+
+/*
+ * Find set by name, reference it once. The reference makes sure the
+ * thing pointed to, does not go away under our feet. Drop the reference
+ * later, using ip_set_put().
+ */
+ip_set_id_t
+ip_set_get_byname(const char *name)
+{
+ ip_set_id_t i, index = IP_SET_INVALID_ID;
+
+ down(&ip_set_app_mutex);
+ for (i = 0; i < ip_set_max; i++) {
+ if (ip_set_list[i] != NULL
+ && SETNAME_EQ(ip_set_list[i]->name, name)) {
+ __ip_set_get(i);
+ index = i;
+ break;
+ }
+ }
+ up(&ip_set_app_mutex);
+ return index;
+}
+
+/*
+ * Find set by index, reference it once. The reference makes sure the
+ * thing pointed to, does not go away under our feet. Drop the reference
+ * later, using ip_set_put().
+ */
+ip_set_id_t
+ip_set_get_byindex(ip_set_id_t index)
+{
+ down(&ip_set_app_mutex);
+
+ if (index >= ip_set_max)
+ return IP_SET_INVALID_ID;
+
+ if (ip_set_list[index])
+ __ip_set_get(index);
+ else
+ index = IP_SET_INVALID_ID;
+
+ up(&ip_set_app_mutex);
+ return index;
+}
+
+/*
+ * Find the set id belonging to the index.
+ * We are protected by the mutex, so we do not need to use
+ * ip_set_lock. There is no need to reference the sets either.
+ */
+ip_set_id_t
+ip_set_id(ip_set_id_t index)
+{
+ if (index >= ip_set_max || !ip_set_list[index])
+ return IP_SET_INVALID_ID;
+
+ return ip_set_list[index]->id;
+}
+
+/*
+ * If the given set pointer points to a valid set, decrement
+ * reference count by 1. The caller shall not assume the index
+ * to be valid, after calling this function.
+ */
+void ip_set_put_byindex(ip_set_id_t index)
+{
+ down(&ip_set_app_mutex);
+ if (ip_set_list[index])
+ __ip_set_put(index);
+ up(&ip_set_app_mutex);
+}
+
+/* Find a set by name or index */
+static ip_set_id_t
+ip_set_find_byname(const char *name)
+{
+ ip_set_id_t i, index = IP_SET_INVALID_ID;
+
+ for (i = 0; i < ip_set_max; i++) {
+ if (ip_set_list[i] != NULL
+ && SETNAME_EQ(ip_set_list[i]->name, name)) {
+ index = i;
+ break;
+ }
+ }
+ return index;
+}
+
+static ip_set_id_t
+ip_set_find_byindex(ip_set_id_t index)
+{
+ if (index >= ip_set_max || ip_set_list[index] == NULL)
+ index = IP_SET_INVALID_ID;
+
+ return index;
+}
+
+/*
+ * Add, del, test, bind and unbind
+ */
+
+static inline int
+__ip_set_testip(struct ip_set *set,
+ const void *data,
+ u_int32_t size,
+ ip_set_ip_t *ip)
+{
+ int res;
+
+ read_lock_bh(&set->lock);
+ res = set->type->testip(set, data, size, ip);
+ read_unlock_bh(&set->lock);
+
+ return res;
+}
+
+static int
+__ip_set_addip(ip_set_id_t index,
+ const void *data,
+ u_int32_t size)
+{
+ struct ip_set *set = ip_set_list[index];
+ ip_set_ip_t ip;
+ int res;
+
+ IP_SET_ASSERT(set);
+ do {
+ write_lock_bh(&set->lock);
+ res = set->type->addip(set, data, size, &ip);
+ write_unlock_bh(&set->lock);
+ } while (res == -EAGAIN
+ && set->type->retry
+ && (res = set->type->retry(set)) == 0);
+
+ return res;
+}
+
+static int
+ip_set_addip(ip_set_id_t index,
+ const void *data,
+ u_int32_t size)
+{
+ struct ip_set *set = ip_set_list[index];
+
+ IP_SET_ASSERT(set);
+
+ if (size - sizeof(struct ip_set_req_adt) != set->type->reqsize) {
+ ip_set_printk("data length wrong (want %lu, have %zu)",
+ (long unsigned)set->type->reqsize,
+ size - sizeof(struct ip_set_req_adt));
+ return -EINVAL;
+ }
+ return __ip_set_addip(index,
+ data + sizeof(struct ip_set_req_adt),
+ size - sizeof(struct ip_set_req_adt));
+}
+
+static int
+ip_set_delip(ip_set_id_t index,
+ const void *data,
+ u_int32_t size)
+{
+ struct ip_set *set = ip_set_list[index];
+ ip_set_ip_t ip;
+ int res;
+
+ IP_SET_ASSERT(set);
+
+ if (size - sizeof(struct ip_set_req_adt) != set->type->reqsize) {
+ ip_set_printk("data length wrong (want %lu, have %zu)",
+ (long unsigned)set->type->reqsize,
+ size - sizeof(struct ip_set_req_adt));
+ return -EINVAL;
+ }
+ write_lock_bh(&set->lock);
+ res = set->type->delip(set,
+ data + sizeof(struct ip_set_req_adt),
+ size - sizeof(struct ip_set_req_adt),
+ &ip);
+ write_unlock_bh(&set->lock);
+
+ return res;
+}
+
+static int
+ip_set_testip(ip_set_id_t index,
+ const void *data,
+ u_int32_t size)
+{
+ struct ip_set *set = ip_set_list[index];
+ ip_set_ip_t ip;
+ int res;
+
+ IP_SET_ASSERT(set);
+
+ if (size - sizeof(struct ip_set_req_adt) != set->type->reqsize) {
+ ip_set_printk("data length wrong (want %lu, have %zu)",
+ (long unsigned)set->type->reqsize,
+ size - sizeof(struct ip_set_req_adt));
+ return -EINVAL;
+ }
+ res = __ip_set_testip(set,
+ data + sizeof(struct ip_set_req_adt),
+ size - sizeof(struct ip_set_req_adt),
+ &ip);
+
+ return (res > 0 ? -EEXIST : res);
+}
+
+static int
+ip_set_bindip(ip_set_id_t index,
+ const void *data,
+ u_int32_t size)
+{
+ struct ip_set *set = ip_set_list[index];
+ const struct ip_set_req_bind *req_bind;
+ ip_set_id_t binding;
+ ip_set_ip_t ip;
+ int res;
+
+ IP_SET_ASSERT(set);
+ if (size < sizeof(struct ip_set_req_bind))
+ return -EINVAL;
+
+ req_bind = data;
+
+ if (SETNAME_EQ(req_bind->binding, IPSET_TOKEN_DEFAULT)) {
+ /* Default binding of a set */
+ const char *binding_name;
+
+ if (size != sizeof(struct ip_set_req_bind) + IP_SET_MAXNAMELEN)
+ return -EINVAL;
+
+ binding_name = data + sizeof(struct ip_set_req_bind);
+
+ binding = ip_set_find_byname(binding_name);
+ if (binding == IP_SET_INVALID_ID)
+ return -ENOENT;
+
+ write_lock_bh(&ip_set_lock);
+ /* Sets as binding values are referenced */
+ if (set->binding != IP_SET_INVALID_ID)
+ __ip_set_put(set->binding);
+ set->binding = binding;
+ __ip_set_get(set->binding);
+ write_unlock_bh(&ip_set_lock);
+
+ return 0;
+ }
+ binding = ip_set_find_byname(req_bind->binding);
+ if (binding == IP_SET_INVALID_ID)
+ return -ENOENT;
+
+ res = __ip_set_testip(set,
+ data + sizeof(struct ip_set_req_bind),
+ size - sizeof(struct ip_set_req_bind),
+ &ip);
+ DP("set %s, ip: %u.%u.%u.%u, binding %s",
+ set->name, HIPQUAD(ip), ip_set_list[binding]->name);
+
+ if (res >= 0)
+ res = ip_set_hash_add(set->id, ip, binding);
+
+ return res;
+}
+
+#define FOREACH_SET_DO(fn, args...) \
+({ \
+ ip_set_id_t __i; \
+ struct ip_set *__set; \
+ \
+ for (__i = 0; __i < ip_set_max; __i++) { \
+ __set = ip_set_list[__i]; \
+ if (__set != NULL) \
+ fn(__set , ##args); \
+ } \
+})
+
+static inline void
+__set_hash_del_byid(struct ip_set_hash *set_hash, ip_set_id_t id)
+{
+ if (set_hash->id == id)
+ __set_hash_del(set_hash);
+}
+
+static inline void
+__unbind_default(struct ip_set *set)
+{
+ if (set->binding != IP_SET_INVALID_ID) {
+ /* Sets as binding values are referenced */
+ __ip_set_put(set->binding);
+ set->binding = IP_SET_INVALID_ID;
+ }
+}
+
+static int
+ip_set_unbindip(ip_set_id_t index,
+ const void *data,
+ u_int32_t size)
+{
+ struct ip_set *set;
+ const struct ip_set_req_bind *req_bind;
+ ip_set_ip_t ip;
+ int res;
+
+ DP("");
+ if (size < sizeof(struct ip_set_req_bind))
+ return -EINVAL;
+
+ req_bind = data;
+
+ DP("%u %s", index, req_bind->binding);
+ if (index == IP_SET_INVALID_ID) {
+ /* unbind :all: */
+ if (SETNAME_EQ(req_bind->binding, IPSET_TOKEN_DEFAULT)) {
+ /* Default binding of sets */
+ write_lock_bh(&ip_set_lock);
+ FOREACH_SET_DO(__unbind_default);
+ write_unlock_bh(&ip_set_lock);
+ return 0;
+ } else if (SETNAME_EQ(req_bind->binding, IPSET_TOKEN_ALL)) {
+ /* Flush all bindings of all sets*/
+ write_lock_bh(&ip_set_lock);
+ FOREACH_HASH_RW_DO(__set_hash_del);
+ write_unlock_bh(&ip_set_lock);
+ return 0;
+ }
+ DP("unreachable reached!");
+ return -EINVAL;
+ }
+
+ set = ip_set_list[index];
+ IP_SET_ASSERT(set);
+ if (SETNAME_EQ(req_bind->binding, IPSET_TOKEN_DEFAULT)) {
+ /* Default binding of set */
+ ip_set_id_t binding = ip_set_find_byindex(set->binding);
+
+ if (binding == IP_SET_INVALID_ID)
+ return -ENOENT;
+
+ write_lock_bh(&ip_set_lock);
+ /* Sets in hash values are referenced */
+ __ip_set_put(set->binding);
+ set->binding = IP_SET_INVALID_ID;
+ write_unlock_bh(&ip_set_lock);
+
+ return 0;
+ } else if (SETNAME_EQ(req_bind->binding, IPSET_TOKEN_ALL)) {
+ /* Flush all bindings */
+
+ write_lock_bh(&ip_set_lock);
+ FOREACH_HASH_RW_DO(__set_hash_del_byid, set->id);
+ write_unlock_bh(&ip_set_lock);
+ return 0;
+ }
+
+ res = __ip_set_testip(set,
+ data + sizeof(struct ip_set_req_bind),
+ size - sizeof(struct ip_set_req_bind),
+ &ip);
+
+ DP("set %s, ip: %u.%u.%u.%u", set->name, HIPQUAD(ip));
+ if (res >= 0)
+ res = ip_set_hash_del(set->id, ip);
+
+ return res;
+}
+
+static int
+ip_set_testbind(ip_set_id_t index,
+ const void *data,
+ u_int32_t size)
+{
+ struct ip_set *set = ip_set_list[index];
+ const struct ip_set_req_bind *req_bind;
+ ip_set_id_t binding;
+ ip_set_ip_t ip;
+ int res;
+
+ IP_SET_ASSERT(set);
+ if (size < sizeof(struct ip_set_req_bind))
+ return -EINVAL;
+
+ req_bind = data;
+
+ if (SETNAME_EQ(req_bind->binding, IPSET_TOKEN_DEFAULT)) {
+ /* Default binding of set */
+ const char *binding_name;
+
+ if (size != sizeof(struct ip_set_req_bind) + IP_SET_MAXNAMELEN)
+ return -EINVAL;
+
+ binding_name = data + sizeof(struct ip_set_req_bind);
+
+ binding = ip_set_find_byname(binding_name);
+ if (binding == IP_SET_INVALID_ID)
+ return -ENOENT;
+
+ res = (set->binding == binding) ? -EEXIST : 0;
+
+ return res;
+ }
+ binding = ip_set_find_byname(req_bind->binding);
+ if (binding == IP_SET_INVALID_ID)
+ return -ENOENT;
+
+
+ res = __ip_set_testip(set,
+ data + sizeof(struct ip_set_req_bind),
+ size - sizeof(struct ip_set_req_bind),
+ &ip);
+ DP("set %s, ip: %u.%u.%u.%u, binding %s",
+ set->name, HIPQUAD(ip), ip_set_list[binding]->name);
+
+ if (res >= 0)
+ res = (ip_set_find_in_hash(set->id, ip) == binding)
+ ? -EEXIST : 0;
+
+ return res;
+}
+
+static struct ip_set_type *
+find_set_type_rlock(const char *typename)
+{
+ struct ip_set_type *type;
+
+ read_lock_bh(&ip_set_lock);
+ type = find_set_type(typename);
+ if (type == NULL)
+ read_unlock_bh(&ip_set_lock);
+
+ return type;
+}
+
+static int
+find_free_id(const char *name,
+ ip_set_id_t *index,
+ ip_set_id_t *id)
+{
+ ip_set_id_t i;
+
+ *id = IP_SET_INVALID_ID;
+ for (i = 0; i < ip_set_max; i++) {
+ if (ip_set_list[i] == NULL) {
+ if (*id == IP_SET_INVALID_ID)
+ *id = *index = i;
+ } else if (SETNAME_EQ(name, ip_set_list[i]->name))
+ /* Name clash */
+ return -EEXIST;
+ }
+ if (*id == IP_SET_INVALID_ID)
+ /* No free slot remained */
+ return -ERANGE;
+ /* Check that index is usable as id (swapping) */
+ check:
+ for (i = 0; i < ip_set_max; i++) {
+ if (ip_set_list[i] != NULL
+ && ip_set_list[i]->id == *id) {
+ *id = i;
+ goto check;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Create a set
+ */
+static int
+ip_set_create(const char *name,
+ const char *typename,
+ ip_set_id_t restore,
+ const void *data,
+ u_int32_t size)
+{
+ struct ip_set *set;
+ ip_set_id_t index = 0, id;
+ int res = 0;
+
+ DP("setname: %s, typename: %s, id: %u", name, typename, restore);
+
+ /*
+ * First, and without any locks, allocate and initialize
+ * a normal base set structure.
+ */
+ set = kmalloc(sizeof(struct ip_set), GFP_KERNEL);
+ if (!set)
+ return -ENOMEM;
+ rwlock_init(&set->lock);
+ strncpy(set->name, name, IP_SET_MAXNAMELEN);
+ set->binding = IP_SET_INVALID_ID;
+ atomic_set(&set->ref, 0);
+
+ /*
+ * Next, take the &ip_set_lock, check that we know the type,
+ * and take a reference on the type, to make sure it
+ * stays available while constructing our new set.
+ *
+ * After referencing the type, we drop the &ip_set_lock,
+ * and let the new set construction run without locks.
+ */
+ set->type = find_set_type_rlock(typename);
+ if (set->type == NULL) {
+ /* Try loading the module */
+ char modulename[IP_SET_MAXNAMELEN + strlen("ip_set_") + 1];
+ strcpy(modulename, "ip_set_");
+ strcat(modulename, typename);
+ DP("try to load %s", modulename);
+ request_module(modulename);
+ set->type = find_set_type_rlock(typename);
+ }
+ if (set->type == NULL) {
+ ip_set_printk("no set type '%s', set '%s' not created",
+ typename, name);
+ res = -ENOENT;
+ goto out;
+ }
+ if (!try_module_get(set->type->me)) {
+ read_unlock_bh(&ip_set_lock);
+ res = -EFAULT;
+ goto out;
+ }
+ read_unlock_bh(&ip_set_lock);
+
+ /* Check request size */
+ if (size != set->type->header_size) {
+ ip_set_printk("data length wrong (want %lu, have %lu)",
+ (long unsigned)set->type->header_size,
+ (long unsigned)size);
+ goto put_out;
+ }
+
+ /*
+ * Without holding any locks, create private part.
+ */
+ res = set->type->create(set, data, size);
+ if (res != 0)
+ goto put_out;
+
+ /* BTW, res==0 here. */
+
+ /*
+ * Here, we have a valid, constructed set. &ip_set_lock again,
+ * find free id/index and check that it is not already in
+ * ip_set_list.
+ */
+ write_lock_bh(&ip_set_lock);
+ if ((res = find_free_id(set->name, &index, &id)) != 0) {
+ DP("no free id!");
+ goto cleanup;
+ }
+
+ /* Make sure restore gets the same index */
+ if (restore != IP_SET_INVALID_ID && index != restore) {
+ DP("Can't restore, sets are screwed up");
+ res = -ERANGE;
+ goto cleanup;
+ }
+
+ /*
+ * Finally! Add our shiny new set to the list, and be done.
+ */
+ DP("create: '%s' created with index %u, id %u!", set->name, index, id);
+ set->id = id;
+ ip_set_list[index] = set;
+ write_unlock_bh(&ip_set_lock);
+ return res;
+
+ cleanup:
+ write_unlock_bh(&ip_set_lock);
+ set->type->destroy(set);
+ put_out:
+ module_put(set->type->me);
+ out:
+ kfree(set);
+ return res;
+}
+
+/*
+ * Destroy a given existing set
+ */
+static void
+ip_set_destroy_set(ip_set_id_t index)
+{
+ struct ip_set *set = ip_set_list[index];
+
+ IP_SET_ASSERT(set);
+ DP("set: %s", set->name);
+ write_lock_bh(&ip_set_lock);
+ FOREACH_HASH_RW_DO(__set_hash_del_byid, set->id);
+ if (set->binding != IP_SET_INVALID_ID)
+ __ip_set_put(set->binding);
+ ip_set_list[index] = NULL;
+ write_unlock_bh(&ip_set_lock);
+
+ /* Must call it without holding any lock */
+ set->type->destroy(set);
+ module_put(set->type->me);
+ kfree(set);
+}
+
+/*
+ * Destroy a set - or all sets
+ * Sets must not be referenced/used.
+ */
+static int
+ip_set_destroy(ip_set_id_t index)
+{
+ ip_set_id_t i;
+
+ /* ref modification always protected by the mutex */
+ if (index != IP_SET_INVALID_ID) {
+ if (atomic_read(&ip_set_list[index]->ref))
+ return -EBUSY;
+ ip_set_destroy_set(index);
+ } else {
+ for (i = 0; i < ip_set_max; i++) {
+ if (ip_set_list[i] != NULL
+ && (atomic_read(&ip_set_list[i]->ref)))
+ return -EBUSY;
+ }
+
+ for (i = 0; i < ip_set_max; i++) {
+ if (ip_set_list[i] != NULL)
+ ip_set_destroy_set(i);
+ }
+ }
+ return 0;
+}
+
+static void
+ip_set_flush_set(struct ip_set *set)
+{
+ DP("set: %s %u", set->name, set->id);
+
+ write_lock_bh(&set->lock);
+ set->type->flush(set);
+ write_unlock_bh(&set->lock);
+}
+
+/*
+ * Flush data in a set - or in all sets
+ */
+static int
+ip_set_flush(ip_set_id_t index)
+{
+ if (index != IP_SET_INVALID_ID) {
+ IP_SET_ASSERT(ip_set_list[index]);
+ ip_set_flush_set(ip_set_list[index]);
+ } else
+ FOREACH_SET_DO(ip_set_flush_set);
+
+ return 0;
+}
+
+/* Rename a set */
+static int
+ip_set_rename(ip_set_id_t index, const char *name)
+{
+ struct ip_set *set = ip_set_list[index];
+ ip_set_id_t i;
+ int res = 0;
+
+ DP("set: %s to %s", set->name, name);
+ write_lock_bh(&ip_set_lock);
+ for (i = 0; i < ip_set_max; i++) {
+ if (ip_set_list[i] != NULL
+ && SETNAME_EQ(ip_set_list[i]->name, name)) {
+ res = -EEXIST;
+ goto unlock;
+ }
+ }
+ strncpy(set->name, name, IP_SET_MAXNAMELEN);
+ unlock:
+ write_unlock_bh(&ip_set_lock);
+ return res;
+}
+
+/*
+ * Swap two sets so that name/index points to the other.
+ * References are also swapped.
+ */
+static int
+ip_set_swap(ip_set_id_t from_index, ip_set_id_t to_index)
+{
+ struct ip_set *from = ip_set_list[from_index];
+ struct ip_set *to = ip_set_list[to_index];
+ char from_name[IP_SET_MAXNAMELEN];
+ u_int32_t from_ref;
+
+ DP("set: %s to %s", from->name, to->name);
+ /* Features must not change.
+ * Not an artifical restriction anymore, as we must prevent
+ * possible loops created by swapping in setlist type of sets. */
+ if (from->type->features != to->type->features)
+ return -ENOEXEC;
+
+ /* No magic here: ref munging protected by the mutex */
+ write_lock_bh(&ip_set_lock);
+ strncpy(from_name, from->name, IP_SET_MAXNAMELEN);
+ from_ref = atomic_read(&from->ref);
+
+ strncpy(from->name, to->name, IP_SET_MAXNAMELEN);
+ atomic_set(&from->ref, atomic_read(&to->ref));
+ strncpy(to->name, from_name, IP_SET_MAXNAMELEN);
+ atomic_set(&to->ref, from_ref);
+
+ ip_set_list[from_index] = to;
+ ip_set_list[to_index] = from;
+
+ write_unlock_bh(&ip_set_lock);
+ return 0;
+}
+
+/*
+ * List set data
+ */
+
+static inline void
+__set_hash_bindings_size_list(struct ip_set_hash *set_hash,
+ ip_set_id_t id, u_int32_t *size)
+{
+ if (set_hash->id == id)
+ *size += sizeof(struct ip_set_hash_list);
+}
+
+static inline void
+__set_hash_bindings_size_save(struct ip_set_hash *set_hash,
+ ip_set_id_t id, u_int32_t *size)
+{
+ if (set_hash->id == id)
+ *size += sizeof(struct ip_set_hash_save);
+}
+
+static inline void
+__set_hash_bindings(struct ip_set_hash *set_hash,
+ ip_set_id_t id, void *data, int *used)
+{
+ if (set_hash->id == id) {
+ struct ip_set_hash_list *hash_list = data + *used;
+
+ hash_list->ip = set_hash->ip;
+ hash_list->binding = set_hash->binding;
+ *used += sizeof(struct ip_set_hash_list);
+ }
+}
+
+static int ip_set_list_set(ip_set_id_t index,
+ void *data,
+ int *used,
+ int len)
+{
+ struct ip_set *set = ip_set_list[index];
+ struct ip_set_list *set_list;
+
+ /* Pointer to our header */
+ set_list = data + *used;
+
+ DP("set: %s, used: %d %p %p", set->name, *used, data, data + *used);
+
+ /* Get and ensure header size */
+ if (*used + sizeof(struct ip_set_list) > len)
+ goto not_enough_mem;
+ *used += sizeof(struct ip_set_list);
+
+ read_lock_bh(&set->lock);
+ /* Get and ensure set specific header size */
+ set_list->header_size = set->type->header_size;
+ if (*used + set_list->header_size > len)
+ goto unlock_set;
+
+ /* Fill in the header */
+ set_list->index = index;
+ set_list->binding = set->binding;
+ set_list->ref = atomic_read(&set->ref);
+
+ /* Fill in set spefific header data */
+ set->type->list_header(set, data + *used);
+ *used += set_list->header_size;
+
+ /* Get and ensure set specific members size */
+ set_list->members_size = set->type->list_members_size(set);
+ if (*used + set_list->members_size > len)
+ goto unlock_set;
+
+ /* Fill in set spefific members data */
+ set->type->list_members(set, data + *used);
+ *used += set_list->members_size;
+ read_unlock_bh(&set->lock);
+
+ /* Bindings */
+
+ /* Get and ensure set specific bindings size */
+ set_list->bindings_size = 0;
+ FOREACH_HASH_DO(__set_hash_bindings_size_list,
+ set->id, &set_list->bindings_size);
+ if (*used + set_list->bindings_size > len)
+ goto not_enough_mem;
+
+ /* Fill in set spefific bindings data */
+ FOREACH_HASH_DO(__set_hash_bindings, set->id, data, used);
+
+ return 0;
+
+ unlock_set:
+ read_unlock_bh(&set->lock);
+ not_enough_mem:
+ DP("not enough mem, try again");
+ return -EAGAIN;
+}
+
+/*
+ * Save sets
+ */
+static int ip_set_save_set(ip_set_id_t index,
+ void *data,
+ int *used,
+ int len)
+{
+ struct ip_set *set;
+ struct ip_set_save *set_save;
+
+ /* Pointer to our header */
+ set_save = data + *used;
+
+ /* Get and ensure header size */
+ if (*used + sizeof(struct ip_set_save) > len)
+ goto not_enough_mem;
+ *used += sizeof(struct ip_set_save);
+
+ set = ip_set_list[index];
+ DP("set: %s, used: %d(%d) %p %p", set->name, *used, len,
+ data, data + *used);
+
+ read_lock_bh(&set->lock);
+ /* Get and ensure set specific header size */
+ set_save->header_size = set->type->header_size;
+ if (*used + set_save->header_size > len)
+ goto unlock_set;
+
+ /* Fill in the header */
+ set_save->index = index;
+ set_save->binding = set->binding;
+
+ /* Fill in set spefific header data */
+ set->type->list_header(set, data + *used);
+ *used += set_save->header_size;
+
+ DP("set header filled: %s, used: %d(%lu) %p %p", set->name, *used,
+ (unsigned long)set_save->header_size, data, data + *used);
+ /* Get and ensure set specific members size */
+ set_save->members_size = set->type->list_members_size(set);
+ if (*used + set_save->members_size > len)
+ goto unlock_set;
+
+ /* Fill in set spefific members data */
+ set->type->list_members(set, data + *used);
+ *used += set_save->members_size;
+ read_unlock_bh(&set->lock);
+ DP("set members filled: %s, used: %d(%lu) %p %p", set->name, *used,
+ (unsigned long)set_save->members_size, data, data + *used);
+ return 0;
+
+ unlock_set:
+ read_unlock_bh(&set->lock);
+ not_enough_mem:
+ DP("not enough mem, try again");
+ return -EAGAIN;
+}
+
+static inline void
+__set_hash_save_bindings(struct ip_set_hash *set_hash,
+ ip_set_id_t id,
+ void *data,
+ int *used,
+ int len,
+ int *res)
+{
+ if (*res == 0
+ && (id == IP_SET_INVALID_ID || set_hash->id == id)) {
+ struct ip_set_hash_save *hash_save = data + *used;
+ /* Ensure bindings size */
+ if (*used + sizeof(struct ip_set_hash_save) > len) {
+ *res = -ENOMEM;
+ return;
+ }
+ hash_save->id = set_hash->id;
+ hash_save->ip = set_hash->ip;
+ hash_save->binding = set_hash->binding;
+ *used += sizeof(struct ip_set_hash_save);
+ }
+}
+
+static int ip_set_save_bindings(ip_set_id_t index,
+ void *data,
+ int *used,
+ int len)
+{
+ int res = 0;
+ struct ip_set_save *set_save;
+
+ DP("used %u, len %u", *used, len);
+ /* Get and ensure header size */
+ if (*used + sizeof(struct ip_set_save) > len)
+ return -ENOMEM;
+
+ /* Marker */
+ set_save = data + *used;
+ set_save->index = IP_SET_INVALID_ID;
+ set_save->header_size = 0;
+ set_save->members_size = 0;
+ *used += sizeof(struct ip_set_save);
+
+ DP("marker added used %u, len %u", *used, len);
+ /* Fill in bindings data */
+ if (index != IP_SET_INVALID_ID)
+ /* Sets are identified by id in hash */
+ index = ip_set_list[index]->id;
+ FOREACH_HASH_DO(__set_hash_save_bindings, index, data, used, len, &res);
+
+ return res;
+}
+
+/*
+ * Restore sets
+ */
+static int ip_set_restore(void *data,
+ int len)
+{
+ int res = 0;
+ int line = 0, used = 0, members_size;
+ struct ip_set *set;
+ struct ip_set_hash_save *hash_save;
+ struct ip_set_restore *set_restore;
+ ip_set_id_t index;
+
+ /* Loop to restore sets */
+ while (1) {
+ line++;
+
+ DP("%d %zu %d", used, sizeof(struct ip_set_restore), len);
+ /* Get and ensure header size */
+ if (used + sizeof(struct ip_set_restore) > len)
+ return line;
+ set_restore = data + used;
+ used += sizeof(struct ip_set_restore);
+
+ /* Ensure data size */
+ if (used
+ + set_restore->header_size
+ + set_restore->members_size > len)
+ return line;
+
+ /* Check marker */
+ if (set_restore->index == IP_SET_INVALID_ID) {
+ line--;
+ goto bindings;
+ }
+
+ /* Try to create the set */
+ DP("restore %s %s", set_restore->name, set_restore->typename);
+ res = ip_set_create(set_restore->name,
+ set_restore->typename,
+ set_restore->index,
+ data + used,
+ set_restore->header_size);
+
+ if (res != 0)
+ return line;
+ used += set_restore->header_size;
+
+ index = ip_set_find_byindex(set_restore->index);
+ DP("index %u, restore_index %u", index, set_restore->index);
+ if (index != set_restore->index)
+ return line;
+ /* Try to restore members data */
+ set = ip_set_list[index];
+ members_size = 0;
+ DP("members_size %lu reqsize %lu",
+ (unsigned long)set_restore->members_size,
+ (unsigned long)set->type->reqsize);
+ while (members_size + set->type->reqsize <=
+ set_restore->members_size) {
+ line++;
+ DP("members: %d, line %d", members_size, line);
+ res = __ip_set_addip(index,
+ data + used + members_size,
+ set->type->reqsize);
+ if (!(res == 0 || res == -EEXIST))
+ return line;
+ members_size += set->type->reqsize;
+ }
+
+ DP("members_size %lu %d",
+ (unsigned long)set_restore->members_size, members_size);
+ if (members_size != set_restore->members_size)
+ return line++;
+ used += set_restore->members_size;
+ }
+
+ bindings:
+ /* Loop to restore bindings */
+ while (used < len) {
+ line++;
+
+ DP("restore binding, line %u", line);
+ /* Get and ensure size */
+ if (used + sizeof(struct ip_set_hash_save) > len)
+ return line;
+ hash_save = data + used;
+ used += sizeof(struct ip_set_hash_save);
+
+ /* hash_save->id is used to store the index */
+ index = ip_set_find_byindex(hash_save->id);
+ DP("restore binding index %u, id %u, %u -> %u",
+ index, hash_save->id, hash_save->ip, hash_save->binding);
+ if (index != hash_save->id)
+ return line;
+ if (ip_set_find_byindex(hash_save->binding) == IP_SET_INVALID_ID) {
+ DP("corrupt binding set index %u", hash_save->binding);
+ return line;
+ }
+ set = ip_set_list[hash_save->id];
+ /* Null valued IP means default binding */
+ if (hash_save->ip)
+ res = ip_set_hash_add(set->id,
+ hash_save->ip,
+ hash_save->binding);
+ else {
+ IP_SET_ASSERT(set->binding == IP_SET_INVALID_ID);
+ write_lock_bh(&ip_set_lock);
+ set->binding = hash_save->binding;
+ __ip_set_get(set->binding);
+ write_unlock_bh(&ip_set_lock);
+ DP("default binding: %u", set->binding);
+ }
+ if (res != 0)
+ return line;
+ }
+ if (used != len)
+ return line;
+
+ return 0;
+}
+
+static int
+ip_set_sockfn_set(struct sock *sk, int optval, void *user, unsigned int len)
+{
+ void *data;
+ int res = 0; /* Assume OK */
+ unsigned *op;
+ struct ip_set_req_adt *req_adt;
+ ip_set_id_t index = IP_SET_INVALID_ID;
+ int (*adtfn)(ip_set_id_t index,
+ const void *data, u_int32_t size);
+ struct fn_table {
+ int (*fn)(ip_set_id_t index,
+ const void *data, u_int32_t size);
+ } adtfn_table[] =
+ { { ip_set_addip }, { ip_set_delip }, { ip_set_testip},
+ { ip_set_bindip}, { ip_set_unbindip }, { ip_set_testbind },
+ };
+
+ DP("optval=%d, user=%p, len=%d", optval, user, len);
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ if (optval != SO_IP_SET)
+ return -EBADF;
+ if (len <= sizeof(unsigned)) {
+ ip_set_printk("short userdata (want >%zu, got %u)",
+ sizeof(unsigned), len);
+ return -EINVAL;
+ }
+ data = vmalloc(len);
+ if (!data) {
+ DP("out of mem for %u bytes", len);
+ return -ENOMEM;
+ }
+ if (copy_from_user(data, user, len) != 0) {
+ res = -EFAULT;
+ goto done;
+ }
+ if (down_interruptible(&ip_set_app_mutex)) {
+ res = -EINTR;
+ goto done;
+ }
+
+ op = (unsigned *)data;
+ DP("op=%x", *op);
+
+ if (*op < IP_SET_OP_VERSION) {
+ /* Check the version at the beginning of operations */
+ struct ip_set_req_version *req_version = data;
+ if (req_version->version != IP_SET_PROTOCOL_VERSION) {
+ res = -EPROTO;
+ goto done;
+ }
+ }
+
+ switch (*op) {
+ case IP_SET_OP_CREATE:{
+ struct ip_set_req_create *req_create = data;
+
+ if (len < sizeof(struct ip_set_req_create)) {
+ ip_set_printk("short CREATE data (want >=%zu, got %u)",
+ sizeof(struct ip_set_req_create), len);
+ res = -EINVAL;
+ goto done;
+ }
+ req_create->name[IP_SET_MAXNAMELEN - 1] = '\0';
+ req_create->typename[IP_SET_MAXNAMELEN - 1] = '\0';
+ res = ip_set_create(req_create->name,
+ req_create->typename,
+ IP_SET_INVALID_ID,
+ data + sizeof(struct ip_set_req_create),
+ len - sizeof(struct ip_set_req_create));
+ goto done;
+ }
+ case IP_SET_OP_DESTROY:{
+ struct ip_set_req_std *req_destroy = data;
+
+ if (len != sizeof(struct ip_set_req_std)) {
+ ip_set_printk("invalid DESTROY data (want %zu, got %u)",
+ sizeof(struct ip_set_req_std), len);
+ res = -EINVAL;
+ goto done;
+ }
+ if (SETNAME_EQ(req_destroy->name, IPSET_TOKEN_ALL)) {
+ /* Destroy all sets */
+ index = IP_SET_INVALID_ID;
+ } else {
+ req_destroy->name[IP_SET_MAXNAMELEN - 1] = '\0';
+ index = ip_set_find_byname(req_destroy->name);
+
+ if (index == IP_SET_INVALID_ID) {
+ res = -ENOENT;
+ goto done;
+ }
+ }
+
+ res = ip_set_destroy(index);
+ goto done;
+ }
+ case IP_SET_OP_FLUSH:{
+ struct ip_set_req_std *req_flush = data;
+
+ if (len != sizeof(struct ip_set_req_std)) {
+ ip_set_printk("invalid FLUSH data (want %zu, got %u)",
+ sizeof(struct ip_set_req_std), len);
+ res = -EINVAL;
+ goto done;
+ }
+ if (SETNAME_EQ(req_flush->name, IPSET_TOKEN_ALL)) {
+ /* Flush all sets */
+ index = IP_SET_INVALID_ID;
+ } else {
+ req_flush->name[IP_SET_MAXNAMELEN - 1] = '\0';
+ index = ip_set_find_byname(req_flush->name);
+
+ if (index == IP_SET_INVALID_ID) {
+ res = -ENOENT;
+ goto done;
+ }
+ }
+ res = ip_set_flush(index);
+ goto done;
+ }
+ case IP_SET_OP_RENAME:{
+ struct ip_set_req_create *req_rename = data;
+
+ if (len != sizeof(struct ip_set_req_create)) {
+ ip_set_printk("invalid RENAME data (want %zu, got %u)",
+ sizeof(struct ip_set_req_create), len);
+ res = -EINVAL;
+ goto done;
+ }
+
+ req_rename->name[IP_SET_MAXNAMELEN - 1] = '\0';
+ req_rename->typename[IP_SET_MAXNAMELEN - 1] = '\0';
+
+ index = ip_set_find_byname(req_rename->name);
+ if (index == IP_SET_INVALID_ID) {
+ res = -ENOENT;
+ goto done;
+ }
+ res = ip_set_rename(index, req_rename->typename);
+ goto done;
+ }
+ case IP_SET_OP_SWAP:{
+ struct ip_set_req_create *req_swap = data;
+ ip_set_id_t to_index;
+
+ if (len != sizeof(struct ip_set_req_create)) {
+ ip_set_printk("invalid SWAP data (want %zu, got %u)",
+ sizeof(struct ip_set_req_create), len);
+ res = -EINVAL;
+ goto done;
+ }
+
+ req_swap->name[IP_SET_MAXNAMELEN - 1] = '\0';
+ req_swap->typename[IP_SET_MAXNAMELEN - 1] = '\0';
+
+ index = ip_set_find_byname(req_swap->name);
+ if (index == IP_SET_INVALID_ID) {
+ res = -ENOENT;
+ goto done;
+ }
+ to_index = ip_set_find_byname(req_swap->typename);
+ if (to_index == IP_SET_INVALID_ID) {
+ res = -ENOENT;
+ goto done;
+ }
+ res = ip_set_swap(index, to_index);
+ goto done;
+ }
+ default:
+ break; /* Set identified by id */
+ }
+
+ /* There we may have add/del/test/bind/unbind/test_bind operations */
+ if (*op < IP_SET_OP_ADD_IP || *op > IP_SET_OP_TEST_BIND_SET) {
+ res = -EBADMSG;
+ goto done;
+ }
+ adtfn = adtfn_table[*op - IP_SET_OP_ADD_IP].fn;
+
+ if (len < sizeof(struct ip_set_req_adt)) {
+ ip_set_printk("short data in adt request (want >=%zu, got %u)",
+ sizeof(struct ip_set_req_adt), len);
+ res = -EINVAL;
+ goto done;
+ }
+ req_adt = data;
+
+ /* -U :all: :all:|:default: uses IP_SET_INVALID_ID */
+ if (!(*op == IP_SET_OP_UNBIND_SET
+ && req_adt->index == IP_SET_INVALID_ID)) {
+ index = ip_set_find_byindex(req_adt->index);
+ if (index == IP_SET_INVALID_ID) {
+ res = -ENOENT;
+ goto done;
+ }
+ }
+ res = adtfn(index, data, len);
+
+ done:
+ up(&ip_set_app_mutex);
+ vfree(data);
+ if (res > 0)
+ res = 0;
+ DP("final result %d", res);
+ return res;
+}
+
+static int
+ip_set_sockfn_get(struct sock *sk, int optval, void *user, int *len)
+{
+ int res = 0;
+ unsigned *op;
+ ip_set_id_t index = IP_SET_INVALID_ID;
+ void *data;
+ int copylen = *len;
+
+ DP("optval=%d, user=%p, len=%d", optval, user, *len);
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ if (optval != SO_IP_SET)
+ return -EBADF;
+ if (*len < sizeof(unsigned)) {
+ ip_set_printk("short userdata (want >=%zu, got %d)",
+ sizeof(unsigned), *len);
+ return -EINVAL;
+ }
+ data = vmalloc(*len);
+ if (!data) {
+ DP("out of mem for %d bytes", *len);
+ return -ENOMEM;
+ }
+ if (copy_from_user(data, user, *len) != 0) {
+ res = -EFAULT;
+ goto done;
+ }
+ if (down_interruptible(&ip_set_app_mutex)) {
+ res = -EINTR;
+ goto done;
+ }
+
+ op = (unsigned *) data;
+ DP("op=%x", *op);
+
+ if (*op < IP_SET_OP_VERSION) {
+ /* Check the version at the beginning of operations */
+ struct ip_set_req_version *req_version = data;
+ if (req_version->version != IP_SET_PROTOCOL_VERSION) {
+ res = -EPROTO;
+ goto done;
+ }
+ }
+
+ switch (*op) {
+ case IP_SET_OP_VERSION: {
+ struct ip_set_req_version *req_version = data;
+
+ if (*len != sizeof(struct ip_set_req_version)) {
+ ip_set_printk("invalid VERSION (want %zu, got %d)",
+ sizeof(struct ip_set_req_version),
+ *len);
+ res = -EINVAL;
+ goto done;
+ }
+
+ req_version->version = IP_SET_PROTOCOL_VERSION;
+ res = copy_to_user(user, req_version,
+ sizeof(struct ip_set_req_version));
+ goto done;
+ }
+ case IP_SET_OP_GET_BYNAME: {
+ struct ip_set_req_get_set *req_get = data;
+
+ if (*len != sizeof(struct ip_set_req_get_set)) {
+ ip_set_printk("invalid GET_BYNAME (want %zu, got %d)",
+ sizeof(struct ip_set_req_get_set), *len);
+ res = -EINVAL;
+ goto done;
+ }
+ req_get->set.name[IP_SET_MAXNAMELEN - 1] = '\0';
+ index = ip_set_find_byname(req_get->set.name);
+ req_get->set.index = index;
+ goto copy;
+ }
+ case IP_SET_OP_GET_BYINDEX: {
+ struct ip_set_req_get_set *req_get = data;
+
+ if (*len != sizeof(struct ip_set_req_get_set)) {
+ ip_set_printk("invalid GET_BYINDEX (want %zu, got %d)",
+ sizeof(struct ip_set_req_get_set), *len);
+ res = -EINVAL;
+ goto done;
+ }
+ req_get->set.name[IP_SET_MAXNAMELEN - 1] = '\0';
+ index = ip_set_find_byindex(req_get->set.index);
+ strncpy(req_get->set.name,
+ index == IP_SET_INVALID_ID ? ""
+ : ip_set_list[index]->name, IP_SET_MAXNAMELEN);
+ goto copy;
+ }
+ case IP_SET_OP_ADT_GET: {
+ struct ip_set_req_adt_get *req_get = data;
+
+ if (*len != sizeof(struct ip_set_req_adt_get)) {
+ ip_set_printk("invalid ADT_GET (want %zu, got %d)",
+ sizeof(struct ip_set_req_adt_get), *len);
+ res = -EINVAL;
+ goto done;
+ }
+ req_get->set.name[IP_SET_MAXNAMELEN - 1] = '\0';
+ index = ip_set_find_byname(req_get->set.name);
+ if (index != IP_SET_INVALID_ID) {
+ req_get->set.index = index;
+ strncpy(req_get->typename,
+ ip_set_list[index]->type->typename,
+ IP_SET_MAXNAMELEN - 1);
+ } else {
+ res = -ENOENT;
+ goto done;
+ }
+ goto copy;
+ }
+ case IP_SET_OP_MAX_SETS: {
+ struct ip_set_req_max_sets *req_max_sets = data;
+ ip_set_id_t i;
+
+ if (*len != sizeof(struct ip_set_req_max_sets)) {
+ ip_set_printk("invalid MAX_SETS (want %zu, got %d)",
+ sizeof(struct ip_set_req_max_sets), *len);
+ res = -EINVAL;
+ goto done;
+ }
+
+ if (SETNAME_EQ(req_max_sets->set.name, IPSET_TOKEN_ALL)) {
+ req_max_sets->set.index = IP_SET_INVALID_ID;
+ } else {
+ req_max_sets->set.name[IP_SET_MAXNAMELEN - 1] = '\0';
+ req_max_sets->set.index =
+ ip_set_find_byname(req_max_sets->set.name);
+ if (req_max_sets->set.index == IP_SET_INVALID_ID) {
+ res = -ENOENT;
+ goto done;
+ }
+ }
+ req_max_sets->max_sets = ip_set_max;
+ req_max_sets->sets = 0;
+ for (i = 0; i < ip_set_max; i++) {
+ if (ip_set_list[i] != NULL)
+ req_max_sets->sets++;
+ }
+ goto copy;
+ }
+ case IP_SET_OP_LIST_SIZE:
+ case IP_SET_OP_SAVE_SIZE: {
+ struct ip_set_req_setnames *req_setnames = data;
+ struct ip_set_name_list *name_list;
+ struct ip_set *set;
+ ip_set_id_t i;
+ int used;
+
+ if (*len < sizeof(struct ip_set_req_setnames)) {
+ ip_set_printk("short LIST_SIZE (want >=%zu, got %d)",
+ sizeof(struct ip_set_req_setnames), *len);
+ res = -EINVAL;
+ goto done;
+ }
+
+ req_setnames->size = 0;
+ used = sizeof(struct ip_set_req_setnames);
+ for (i = 0; i < ip_set_max; i++) {
+ if (ip_set_list[i] == NULL)
+ continue;
+ name_list = data + used;
+ used += sizeof(struct ip_set_name_list);
+ if (used > copylen) {
+ res = -EAGAIN;
+ goto done;
+ }
+ set = ip_set_list[i];
+ /* Fill in index, name, etc. */
+ name_list->index = i;
+ name_list->id = set->id;
+ strncpy(name_list->name,
+ set->name,
+ IP_SET_MAXNAMELEN - 1);
+ strncpy(name_list->typename,
+ set->type->typename,
+ IP_SET_MAXNAMELEN - 1);
+ DP("filled %s of type %s, index %u\n",
+ name_list->name, name_list->typename,
+ name_list->index);
+ if (!(req_setnames->index == IP_SET_INVALID_ID
+ || req_setnames->index == i))
+ continue;
+ /* Update size */
+ switch (*op) {
+ case IP_SET_OP_LIST_SIZE: {
+ req_setnames->size += sizeof(struct ip_set_list)
+ + set->type->header_size
+ + set->type->list_members_size(set);
+ /* Sets are identified by id in the hash */
+ FOREACH_HASH_DO(__set_hash_bindings_size_list,
+ set->id, &req_setnames->size);
+ break;
+ }
+ case IP_SET_OP_SAVE_SIZE: {
+ req_setnames->size += sizeof(struct ip_set_save)
+ + set->type->header_size
+ + set->type->list_members_size(set);
+ FOREACH_HASH_DO(__set_hash_bindings_size_save,
+ set->id, &req_setnames->size);
+ break;
+ }
+ default:
+ break;
+ }
+ }
+ if (copylen != used) {
+ res = -EAGAIN;
+ goto done;
+ }
+ goto copy;
+ }
+ case IP_SET_OP_LIST: {
+ struct ip_set_req_list *req_list = data;
+ ip_set_id_t i;
+ int used;
+
+ if (*len < sizeof(struct ip_set_req_list)) {
+ ip_set_printk("short LIST (want >=%zu, got %d)",
+ sizeof(struct ip_set_req_list), *len);
+ res = -EINVAL;
+ goto done;
+ }
+ index = req_list->index;
+ if (index != IP_SET_INVALID_ID
+ && ip_set_find_byindex(index) != index) {
+ res = -ENOENT;
+ goto done;
+ }
+ used = 0;
+ if (index == IP_SET_INVALID_ID) {
+ /* List all sets */
+ for (i = 0; i < ip_set_max && res == 0; i++) {
+ if (ip_set_list[i] != NULL)
+ res = ip_set_list_set(i, data, &used, *len);
+ }
+ } else {
+ /* List an individual set */
+ res = ip_set_list_set(index, data, &used, *len);
+ }
+ if (res != 0)
+ goto done;
+ else if (copylen != used) {
+ res = -EAGAIN;
+ goto done;
+ }
+ goto copy;
+ }
+ case IP_SET_OP_SAVE: {
+ struct ip_set_req_list *req_save = data;
+ ip_set_id_t i;
+ int used;
+
+ if (*len < sizeof(struct ip_set_req_list)) {
+ ip_set_printk("short SAVE (want >=%zu, got %d)",
+ sizeof(struct ip_set_req_list), *len);
+ res = -EINVAL;
+ goto done;
+ }
+ index = req_save->index;
+ if (index != IP_SET_INVALID_ID
+ && ip_set_find_byindex(index) != index) {
+ res = -ENOENT;
+ goto done;
+ }
+
+#define SETLIST(set) (strcmp(set->type->typename, "setlist") == 0)
+
+ used = 0;
+ if (index == IP_SET_INVALID_ID) {
+ /* Save all sets: ugly setlist type dependency */
+ int setlist = 0;
+ setlists:
+ for (i = 0; i < ip_set_max && res == 0; i++) {
+ if (ip_set_list[i] != NULL
+ && !(setlist ^ SETLIST(ip_set_list[i])))
+ res = ip_set_save_set(i, data, &used, *len);
+ }
+ if (!setlist) {
+ setlist = 1;
+ goto setlists;
+ }
+ } else {
+ /* Save an individual set */
+ res = ip_set_save_set(index, data, &used, *len);
+ }
+ if (res == 0)
+ res = ip_set_save_bindings(index, data, &used, *len);
+
+ if (res != 0)
+ goto done;
+ else if (copylen != used) {
+ res = -EAGAIN;
+ goto done;
+ }
+ goto copy;
+ }
+ case IP_SET_OP_RESTORE: {
+ struct ip_set_req_setnames *req_restore = data;
+ int line;
+
+ if (*len < sizeof(struct ip_set_req_setnames)
+ || *len != req_restore->size) {
+ ip_set_printk("invalid RESTORE (want =%lu, got %d)",
+ (long unsigned)req_restore->size, *len);
+ res = -EINVAL;
+ goto done;
+ }
+ line = ip_set_restore(data + sizeof(struct ip_set_req_setnames),
+ req_restore->size - sizeof(struct ip_set_req_setnames));
+ DP("ip_set_restore: %d", line);
+ if (line != 0) {
+ res = -EAGAIN;
+ req_restore->size = line;
+ copylen = sizeof(struct ip_set_req_setnames);
+ goto copy;
+ }
+ goto done;
+ }
+ default:
+ res = -EBADMSG;
+ goto done;
+ } /* end of switch(op) */
+
+ copy:
+ DP("set %s, copylen %d", index != IP_SET_INVALID_ID
+ && ip_set_list[index]
+ ? ip_set_list[index]->name
+ : ":all:", copylen);
+ res = copy_to_user(user, data, copylen);
+
+ done:
+ up(&ip_set_app_mutex);
+ vfree(data);
+ if (res > 0)
+ res = 0;
+ DP("final result %d", res);
+ return res;
+}
+
+static struct nf_sockopt_ops so_set = {
+ .pf = PF_INET,
+ .set_optmin = SO_IP_SET,
+ .set_optmax = SO_IP_SET + 1,
+ .set = &ip_set_sockfn_set,
+ .get_optmin = SO_IP_SET,
+ .get_optmax = SO_IP_SET + 1,
+ .get = &ip_set_sockfn_get,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
+ .use = 0,
+#else
+ .owner = THIS_MODULE,
+#endif
+};
+
+static int max_sets, hash_size;
+
+module_param(max_sets, int, 0600);
+MODULE_PARM_DESC(max_sets, "maximal number of sets");
+module_param(hash_size, int, 0600);
+MODULE_PARM_DESC(hash_size, "hash size for bindings");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("module implementing core IP set support");
+
+static int __init ip_set_init(void)
+{
+ int res;
+ ip_set_id_t i;
+
+ get_random_bytes(&ip_set_hash_random, 4);
+ if (max_sets)
+ ip_set_max = max_sets;
+ ip_set_list = vmalloc(sizeof(struct ip_set *) * ip_set_max);
+ if (!ip_set_list) {
+ printk(KERN_ERR "Unable to create ip_set_list\n");
+ return -ENOMEM;
+ }
+ memset(ip_set_list, 0, sizeof(struct ip_set *) * ip_set_max);
+ if (hash_size)
+ ip_set_bindings_hash_size = hash_size;
+ ip_set_hash = vmalloc(sizeof(struct list_head) * ip_set_bindings_hash_size);
+ if (!ip_set_hash) {
+ printk(KERN_ERR "Unable to create ip_set_hash\n");
+ vfree(ip_set_list);
+ return -ENOMEM;
+ }
+ for (i = 0; i < ip_set_bindings_hash_size; i++)
+ INIT_LIST_HEAD(&ip_set_hash[i]);
+
+ INIT_LIST_HEAD(&set_type_list);
+
+ res = nf_register_sockopt(&so_set);
+ if (res != 0) {
+ ip_set_printk("SO_SET registry failed: %d", res);
+ vfree(ip_set_list);
+ vfree(ip_set_hash);
+ return res;
+ }
+
+ return 0;
+}
+
+static void __exit ip_set_fini(void)
+{
+ /* There can't be any existing set or binding */
+ nf_unregister_sockopt(&so_set);
+ vfree(ip_set_list);
+ vfree(ip_set_hash);
+ DP("these are the famous last words");
+}
+
+EXPORT_SYMBOL(ip_set_register_set_type);
+EXPORT_SYMBOL(ip_set_unregister_set_type);
+
+EXPORT_SYMBOL(ip_set_get_byname);
+EXPORT_SYMBOL(ip_set_get_byindex);
+EXPORT_SYMBOL(ip_set_put_byindex);
+EXPORT_SYMBOL(ip_set_id);
+EXPORT_SYMBOL(__ip_set_get_byname);
+EXPORT_SYMBOL(__ip_set_put_byindex);
+
+EXPORT_SYMBOL(ip_set_addip_kernel);
+EXPORT_SYMBOL(ip_set_delip_kernel);
+EXPORT_SYMBOL(ip_set_testip_kernel);
+
+module_init(ip_set_init);
+module_exit(ip_set_fini);
--- /dev/null
+++ b/net/ipv4/netfilter/ip_set_iphash.c
@@ -0,0 +1,166 @@
+/* Copyright (C) 2003-2008 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.
+ */
+
+/* Kernel module implementing an ip hash set */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+#include <linux/netfilter_ipv4/ip_set_jhash.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <linux/spinlock.h>
+#include <linux/random.h>
+
+#include <net/ip.h>
+
+#include <linux/netfilter_ipv4/ip_set_iphash.h>
+
+static int limit = MAX_RANGE;
+
+static inline __u32
+iphash_id(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ struct ip_set_iphash *map = set->data;
+ __u32 id;
+ u_int16_t i;
+ ip_set_ip_t *elem;
+
+ *hash_ip = ip & map->netmask;
+ DP("set: %s, ip:%u.%u.%u.%u, %u.%u.%u.%u, %u.%u.%u.%u",
+ set->name, HIPQUAD(ip), HIPQUAD(*hash_ip), HIPQUAD(map->netmask));
+
+ for (i = 0; i < map->probes; i++) {
+ id = jhash_ip(map, i, *hash_ip) % map->hashsize;
+ DP("hash key: %u", id);
+ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id);
+ if (*elem == *hash_ip)
+ return id;
+ /* No shortcut - there can be deleted entries. */
+ }
+ return UINT_MAX;
+}
+
+static inline int
+iphash_test(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ return (ip && iphash_id(set, hash_ip, ip) != UINT_MAX);
+}
+
+#define KADT_CONDITION
+
+UADT(iphash, test)
+KADT(iphash, test, ipaddr)
+
+static inline int
+__iphash_add(struct ip_set_iphash *map, ip_set_ip_t *ip)
+{
+ __u32 probe;
+ u_int16_t i;
+ ip_set_ip_t *elem, *slot = NULL;
+
+ for (i = 0; i < map->probes; i++) {
+ probe = jhash_ip(map, i, *ip) % map->hashsize;
+ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, probe);
+ if (*elem == *ip)
+ return -EEXIST;
+ if (!(slot || *elem))
+ slot = elem;
+ /* There can be deleted entries, must check all slots */
+ }
+ if (slot) {
+ *slot = *ip;
+ map->elements++;
+ return 0;
+ }
+ /* Trigger rehashing */
+ return -EAGAIN;
+}
+
+static inline int
+iphash_add(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ struct ip_set_iphash *map = set->data;
+
+ if (!ip || map->elements >= limit)
+ return -ERANGE;
+
+ *hash_ip = ip & map->netmask;
+
+ return __iphash_add(map, hash_ip);
+}
+
+UADT(iphash, add)
+KADT(iphash, add, ipaddr)
+
+static inline void
+__iphash_retry(struct ip_set_iphash *tmp, struct ip_set_iphash *map)
+{
+ tmp->netmask = map->netmask;
+}
+
+HASH_RETRY(iphash, ip_set_ip_t)
+
+static inline int
+iphash_del(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ struct ip_set_iphash *map = set->data;
+ ip_set_ip_t id, *elem;
+
+ if (!ip)
+ return -ERANGE;
+
+ id = iphash_id(set, hash_ip, ip);
+ if (id == UINT_MAX)
+ return -EEXIST;
+
+ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id);
+ *elem = 0;
+ map->elements--;
+
+ return 0;
+}
+
+UADT(iphash, del)
+KADT(iphash, del, ipaddr)
+
+static inline int
+__iphash_create(const struct ip_set_req_iphash_create *req,
+ struct ip_set_iphash *map)
+{
+ map->netmask = req->netmask;
+
+ return 0;
+}
+
+HASH_CREATE(iphash, ip_set_ip_t)
+HASH_DESTROY(iphash)
+
+HASH_FLUSH(iphash, ip_set_ip_t)
+
+static inline void
+__iphash_list_header(const struct ip_set_iphash *map,
+ struct ip_set_req_iphash_create *header)
+{
+ header->netmask = map->netmask;
+}
+
+HASH_LIST_HEADER(iphash)
+HASH_LIST_MEMBERS_SIZE(iphash, ip_set_ip_t)
+HASH_LIST_MEMBERS(iphash, ip_set_ip_t)
+
+IP_SET_RTYPE(iphash, IPSET_TYPE_IP | IPSET_DATA_SINGLE)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("iphash type of IP sets");
+module_param(limit, int, 0600);
+MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets");
+
+REGISTER_MODULE(iphash)
--- /dev/null
+++ b/net/ipv4/netfilter/ip_set_ipmap.c
@@ -0,0 +1,142 @@
+/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
+ * Patrick Schaaf <bof@bof.de>
+ * Copyright (C) 2003-2008 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.
+ */
+
+/* Kernel module implementing an IP set type: the single bitmap type */
+
+#include <linux/module.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <linux/spinlock.h>
+
+#include <linux/netfilter_ipv4/ip_set_ipmap.h>
+
+static inline ip_set_ip_t
+ip_to_id(const struct ip_set_ipmap *map, ip_set_ip_t ip)
+{
+ return (ip - map->first_ip)/map->hosts;
+}
+
+static inline int
+ipmap_test(const struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ const struct ip_set_ipmap *map = set->data;
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+
+ *hash_ip = ip & map->netmask;
+ DP("set: %s, ip:%u.%u.%u.%u, %u.%u.%u.%u",
+ set->name, HIPQUAD(ip), HIPQUAD(*hash_ip));
+ return !!test_bit(ip_to_id(map, *hash_ip), map->members);
+}
+
+#define KADT_CONDITION
+
+UADT(ipmap, test)
+KADT(ipmap, test, ipaddr)
+
+static inline int
+ipmap_add(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ struct ip_set_ipmap *map = set->data;
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+
+ *hash_ip = ip & map->netmask;
+ DP("%u.%u.%u.%u, %u.%u.%u.%u", HIPQUAD(ip), HIPQUAD(*hash_ip));
+ if (test_and_set_bit(ip_to_id(map, *hash_ip), map->members))
+ return -EEXIST;
+
+ return 0;
+}
+
+UADT(ipmap, add)
+KADT(ipmap, add, ipaddr)
+
+static inline int
+ipmap_del(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ struct ip_set_ipmap *map = set->data;
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+
+ *hash_ip = ip & map->netmask;
+ DP("%u.%u.%u.%u, %u.%u.%u.%u", HIPQUAD(ip), HIPQUAD(*hash_ip));
+ if (!test_and_clear_bit(ip_to_id(map, *hash_ip), map->members))
+ return -EEXIST;
+
+ return 0;
+}
+
+UADT(ipmap, del)
+KADT(ipmap, del, ipaddr)
+
+static inline int
+__ipmap_create(const struct ip_set_req_ipmap_create *req,
+ struct ip_set_ipmap *map)
+{
+ map->netmask = req->netmask;
+
+ if (req->netmask == 0xFFFFFFFF) {
+ map->hosts = 1;
+ map->sizeid = map->last_ip - map->first_ip + 1;
+ } else {
+ unsigned int mask_bits, netmask_bits;
+ ip_set_ip_t mask;
+
+ map->first_ip &= map->netmask; /* Should we better bark? */
+
+ mask = range_to_mask(map->first_ip, map->last_ip, &mask_bits);
+ netmask_bits = mask_to_bits(map->netmask);
+
+ if ((!mask && (map->first_ip || map->last_ip != 0xFFFFFFFF))
+ || netmask_bits <= mask_bits)
+ return -ENOEXEC;
+
+ DP("mask_bits %u, netmask_bits %u",
+ mask_bits, netmask_bits);
+ map->hosts = 2 << (32 - netmask_bits - 1);
+ map->sizeid = 2 << (netmask_bits - mask_bits - 1);
+ }
+ if (map->sizeid > MAX_RANGE + 1) {
+ ip_set_printk("range too big, %d elements (max %d)",
+ map->sizeid, MAX_RANGE+1);
+ return -ENOEXEC;
+ }
+ DP("hosts %u, sizeid %u", map->hosts, map->sizeid);
+ return bitmap_bytes(0, map->sizeid - 1);
+}
+
+BITMAP_CREATE(ipmap)
+BITMAP_DESTROY(ipmap)
+BITMAP_FLUSH(ipmap)
+
+static inline void
+__ipmap_list_header(const struct ip_set_ipmap *map,
+ struct ip_set_req_ipmap_create *header)
+{
+ header->netmask = map->netmask;
+}
+
+BITMAP_LIST_HEADER(ipmap)
+BITMAP_LIST_MEMBERS_SIZE(ipmap)
+BITMAP_LIST_MEMBERS(ipmap)
+
+IP_SET_TYPE(ipmap, IPSET_TYPE_IP | IPSET_DATA_SINGLE)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("ipmap type of IP sets");
+
+REGISTER_MODULE(ipmap)
--- /dev/null
+++ b/net/ipv4/netfilter/ip_set_ipporthash.c
@@ -0,0 +1,203 @@
+/* Copyright (C) 2003-2008 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.
+ */
+
+/* Kernel module implementing an ip+port hash set */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/skbuff.h>
+#include <linux/netfilter_ipv4/ip_set_jhash.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <linux/spinlock.h>
+#include <linux/random.h>
+
+#include <net/ip.h>
+
+#include <linux/netfilter_ipv4/ip_set_ipporthash.h>
+#include <linux/netfilter_ipv4/ip_set_getport.h>
+
+static int limit = MAX_RANGE;
+
+static inline __u32
+ipporthash_id(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port)
+{
+ struct ip_set_ipporthash *map = set->data;
+ __u32 id;
+ u_int16_t i;
+ ip_set_ip_t *elem;
+
+ *hash_ip = pack_ip_port(map, ip, port);
+
+ DP("set: %s, ipport:%u.%u.%u.%u:%u, %u.%u.%u.%u",
+ set->name, HIPQUAD(ip), port, HIPQUAD(*hash_ip));
+ if (!*hash_ip)
+ return UINT_MAX;
+
+ for (i = 0; i < map->probes; i++) {
+ id = jhash_ip(map, i, *hash_ip) % map->hashsize;
+ DP("hash key: %u", id);
+ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id);
+ if (*elem == *hash_ip)
+ return id;
+ /* No shortcut - there can be deleted entries. */
+ }
+ return UINT_MAX;
+}
+
+static inline int
+ipporthash_test(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port)
+{
+ struct ip_set_ipporthash *map = set->data;
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+
+ return (ipporthash_id(set, hash_ip, ip, port) != UINT_MAX);
+}
+
+#define KADT_CONDITION \
+ ip_set_ip_t port; \
+ \
+ if (flags[index+1] == 0) \
+ return 0; \
+ \
+ port = get_port(skb, flags[index+1]); \
+ \
+ if (port == INVALID_PORT) \
+ return 0;
+
+UADT(ipporthash, test, req->port)
+KADT(ipporthash, test, ipaddr, port)
+
+static inline int
+__ipporthash_add(struct ip_set_ipporthash *map, ip_set_ip_t *ip)
+{
+ __u32 probe;
+ u_int16_t i;
+ ip_set_ip_t *elem, *slot = NULL;
+
+ for (i = 0; i < map->probes; i++) {
+ probe = jhash_ip(map, i, *ip) % map->hashsize;
+ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, probe);
+ if (*elem == *ip)
+ return -EEXIST;
+ if (!(slot || *elem))
+ slot = elem;
+ /* There can be deleted entries, must check all slots */
+ }
+ if (slot) {
+ *slot = *ip;
+ map->elements++;
+ return 0;
+ }
+ /* Trigger rehashing */
+ return -EAGAIN;
+}
+
+static inline int
+ipporthash_add(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port)
+{
+ struct ip_set_ipporthash *map = set->data;
+ if (map->elements > limit)
+ return -ERANGE;
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+
+ *hash_ip = pack_ip_port(map, ip, port);
+
+ if (!*hash_ip)
+ return -ERANGE;
+
+ return __ipporthash_add(map, hash_ip);
+}
+
+UADT(ipporthash, add, req->port)
+KADT(ipporthash, add, ipaddr, port)
+
+static inline void
+__ipporthash_retry(struct ip_set_ipporthash *tmp,
+ struct ip_set_ipporthash *map)
+{
+ tmp->first_ip = map->first_ip;
+ tmp->last_ip = map->last_ip;
+}
+
+HASH_RETRY(ipporthash, ip_set_ip_t)
+
+static inline int
+ipporthash_del(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port)
+{
+ struct ip_set_ipporthash *map = set->data;
+ ip_set_ip_t id;
+ ip_set_ip_t *elem;
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+
+ id = ipporthash_id(set, hash_ip, ip, port);
+
+ if (id == UINT_MAX)
+ return -EEXIST;
+
+ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id);
+ *elem = 0;
+ map->elements--;
+
+ return 0;
+}
+
+UADT(ipporthash, del, req->port)
+KADT(ipporthash, del, ipaddr, port)
+
+static inline int
+__ipporthash_create(const struct ip_set_req_ipporthash_create *req,
+ struct ip_set_ipporthash *map)
+{
+ if (req->to - req->from > MAX_RANGE) {
+ ip_set_printk("range too big, %d elements (max %d)",
+ req->to - req->from + 1, MAX_RANGE+1);
+ return -ENOEXEC;
+ }
+ map->first_ip = req->from;
+ map->last_ip = req->to;
+ return 0;
+}
+
+HASH_CREATE(ipporthash, ip_set_ip_t)
+HASH_DESTROY(ipporthash)
+HASH_FLUSH(ipporthash, ip_set_ip_t)
+
+static inline void
+__ipporthash_list_header(const struct ip_set_ipporthash *map,
+ struct ip_set_req_ipporthash_create *header)
+{
+ header->from = map->first_ip;
+ header->to = map->last_ip;
+}
+
+HASH_LIST_HEADER(ipporthash)
+HASH_LIST_MEMBERS_SIZE(ipporthash, ip_set_ip_t)
+HASH_LIST_MEMBERS(ipporthash, ip_set_ip_t)
+
+IP_SET_RTYPE(ipporthash, IPSET_TYPE_IP | IPSET_TYPE_PORT | IPSET_DATA_DOUBLE)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("ipporthash type of IP sets");
+module_param(limit, int, 0600);
+MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets");
+
+REGISTER_MODULE(ipporthash)
--- /dev/null
+++ b/net/ipv4/netfilter/ip_set_ipportiphash.c
@@ -0,0 +1,216 @@
+/* Copyright (C) 2008 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.
+ */
+
+/* Kernel module implementing an ip+port+ip hash set */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/skbuff.h>
+#include <linux/netfilter_ipv4/ip_set_jhash.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <linux/spinlock.h>
+#include <linux/random.h>
+
+#include <net/ip.h>
+
+#include <linux/netfilter_ipv4/ip_set_ipportiphash.h>
+#include <linux/netfilter_ipv4/ip_set_getport.h>
+
+static int limit = MAX_RANGE;
+
+#define jhash_ip2(map, i, ipport, ip1) \
+ jhash_2words(ipport, ip1, *(map->initval + i))
+
+static inline __u32
+ipportiphash_id(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port, ip_set_ip_t ip1)
+{
+ struct ip_set_ipportiphash *map = set->data;
+ __u32 id;
+ u_int16_t i;
+ struct ipportip *elem;
+
+ *hash_ip = pack_ip_port(map, ip, port);
+ DP("set: %s, ipport:%u.%u.%u.%u:%u, %u.%u.%u.%u",
+ set->name, HIPQUAD(ip), port, HIPQUAD(*hash_ip));
+ if (!(*hash_ip || ip1))
+ return UINT_MAX;
+
+ for (i = 0; i < map->probes; i++) {
+ id = jhash_ip2(map, i, *hash_ip, ip1) % map->hashsize;
+ DP("hash key: %u", id);
+ elem = HARRAY_ELEM(map->members, struct ipportip *, id);
+ if (elem->ip == *hash_ip && elem->ip1 == ip1)
+ return id;
+ /* No shortcut - there can be deleted entries. */
+ }
+ return UINT_MAX;
+}
+
+static inline int
+ipportiphash_test(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port, ip_set_ip_t ip1)
+{
+ struct ip_set_ipportiphash *map = set->data;
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+
+ return (ipportiphash_id(set, hash_ip, ip, port, ip1) != UINT_MAX);
+}
+
+#define KADT_CONDITION \
+ ip_set_ip_t port, ip1; \
+ \
+ if (flags[index+2] == 0) \
+ return 0; \
+ \
+ port = get_port(skb, flags[index+1]); \
+ ip1 = ipaddr(skb, flags[index+2]); \
+ \
+ if (port == INVALID_PORT) \
+ return 0;
+
+UADT(ipportiphash, test, req->port, req->ip1)
+KADT(ipportiphash, test, ipaddr, port, ip1)
+
+static inline int
+__ipportip_add(struct ip_set_ipportiphash *map,
+ ip_set_ip_t hash_ip, ip_set_ip_t ip1)
+{
+ __u32 probe;
+ u_int16_t i;
+ struct ipportip *elem, *slot = NULL;
+
+ for (i = 0; i < map->probes; i++) {
+ probe = jhash_ip2(map, i, hash_ip, ip1) % map->hashsize;
+ elem = HARRAY_ELEM(map->members, struct ipportip *, probe);
+ if (elem->ip == hash_ip && elem->ip1 == ip1)
+ return -EEXIST;
+ if (!(slot || elem->ip || elem->ip1))
+ slot = elem;
+ /* There can be deleted entries, must check all slots */
+ }
+ if (slot) {
+ slot->ip = hash_ip;
+ slot->ip1 = ip1;
+ map->elements++;
+ return 0;
+ }
+ /* Trigger rehashing */
+ return -EAGAIN;
+}
+
+static inline int
+__ipportiphash_add(struct ip_set_ipportiphash *map,
+ struct ipportip *elem)
+{
+ return __ipportip_add(map, elem->ip, elem->ip1);
+}
+
+static inline int
+ipportiphash_add(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port, ip_set_ip_t ip1)
+{
+ struct ip_set_ipportiphash *map = set->data;
+
+ if (map->elements > limit)
+ return -ERANGE;
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+
+ *hash_ip = pack_ip_port(map, ip, port);
+ if (!(*hash_ip || ip1))
+ return -ERANGE;
+
+ return __ipportip_add(map, *hash_ip, ip1);
+}
+
+UADT(ipportiphash, add, req->port, req->ip1)
+KADT(ipportiphash, add, ipaddr, port, ip1)
+
+static inline void
+__ipportiphash_retry(struct ip_set_ipportiphash *tmp,
+ struct ip_set_ipportiphash *map)
+{
+ tmp->first_ip = map->first_ip;
+ tmp->last_ip = map->last_ip;
+}
+
+HASH_RETRY2(ipportiphash, struct ipportip)
+
+static inline int
+ipportiphash_del(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port, ip_set_ip_t ip1)
+{
+ struct ip_set_ipportiphash *map = set->data;
+ ip_set_ip_t id;
+ struct ipportip *elem;
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+
+ id = ipportiphash_id(set, hash_ip, ip, port, ip1);
+
+ if (id == UINT_MAX)
+ return -EEXIST;
+
+ elem = HARRAY_ELEM(map->members, struct ipportip *, id);
+ elem->ip = elem->ip1 = 0;
+ map->elements--;
+
+ return 0;
+}
+
+UADT(ipportiphash, del, req->port, req->ip1)
+KADT(ipportiphash, del, ipaddr, port, ip1)
+
+static inline int
+__ipportiphash_create(const struct ip_set_req_ipportiphash_create *req,
+ struct ip_set_ipportiphash *map)
+{
+ if (req->to - req->from > MAX_RANGE) {
+ ip_set_printk("range too big, %d elements (max %d)",
+ req->to - req->from + 1, MAX_RANGE+1);
+ return -ENOEXEC;
+ }
+ map->first_ip = req->from;
+ map->last_ip = req->to;
+ return 0;
+}
+
+HASH_CREATE(ipportiphash, struct ipportip)
+HASH_DESTROY(ipportiphash)
+HASH_FLUSH(ipportiphash, struct ipportip)
+
+static inline void
+__ipportiphash_list_header(const struct ip_set_ipportiphash *map,
+ struct ip_set_req_ipportiphash_create *header)
+{
+ header->from = map->first_ip;
+ header->to = map->last_ip;
+}
+
+HASH_LIST_HEADER(ipportiphash)
+HASH_LIST_MEMBERS_SIZE(ipportiphash, struct ipportip)
+HASH_LIST_MEMBERS_MEMCPY(ipportiphash, struct ipportip)
+
+IP_SET_RTYPE(ipportiphash, IPSET_TYPE_IP | IPSET_TYPE_PORT
+ | IPSET_TYPE_IP1 | IPSET_DATA_TRIPLE)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("ipportiphash type of IP sets");
+module_param(limit, int, 0600);
+MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets");
+
+REGISTER_MODULE(ipportiphash)
--- /dev/null
+++ b/net/ipv4/netfilter/ip_set_ipportnethash.c
@@ -0,0 +1,304 @@
+/* Copyright (C) 2008 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.
+ */
+
+/* Kernel module implementing an ip+port+net hash set */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/skbuff.h>
+#include <linux/netfilter_ipv4/ip_set_jhash.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <linux/spinlock.h>
+#include <linux/random.h>
+
+#include <net/ip.h>
+
+#include <linux/netfilter_ipv4/ip_set_ipportnethash.h>
+#include <linux/netfilter_ipv4/ip_set_getport.h>
+
+static int limit = MAX_RANGE;
+
+#define jhash_ip2(map, i, ipport, ip1) \
+ jhash_2words(ipport, ip1, *(map->initval + i))
+
+static inline __u32
+ipportnethash_id_cidr(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port,
+ ip_set_ip_t ip1, uint8_t cidr)
+{
+ struct ip_set_ipportnethash *map = set->data;
+ __u32 id;
+ u_int16_t i;
+ struct ipportip *elem;
+
+ *hash_ip = pack_ip_port(map, ip, port);
+ DP("set: %s, ipport:%u.%u.%u.%u:%u, %u.%u.%u.%u",
+ set->name, HIPQUAD(ip), port, HIPQUAD(*hash_ip));
+ ip1 = pack_ip_cidr(ip1, cidr);
+ if (!(*hash_ip || ip1))
+ return UINT_MAX;
+
+ for (i = 0; i < map->probes; i++) {
+ id = jhash_ip2(map, i, *hash_ip, ip1) % map->hashsize;
+ DP("hash key: %u", id);
+ elem = HARRAY_ELEM(map->members, struct ipportip *, id);
+ if (elem->ip == *hash_ip && elem->ip1 == ip1)
+ return id;
+ /* No shortcut - there can be deleted entries. */
+ }
+ return UINT_MAX;
+}
+
+static inline __u32
+ipportnethash_id(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port, ip_set_ip_t ip1)
+{
+ struct ip_set_ipportnethash *map = set->data;
+ __u32 id = UINT_MAX;
+ int i;
+
+ for (i = 0; i < 30 && map->cidr[i]; i++) {
+ id = ipportnethash_id_cidr(set, hash_ip, ip, port, ip1,
+ map->cidr[i]);
+ if (id != UINT_MAX)
+ break;
+ }
+ return id;
+}
+
+static inline int
+ipportnethash_test_cidr(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port,
+ ip_set_ip_t ip1, uint8_t cidr)
+{
+ struct ip_set_ipportnethash *map = set->data;
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+
+ return (ipportnethash_id_cidr(set, hash_ip, ip, port, ip1,
+ cidr) != UINT_MAX);
+}
+
+static inline int
+ipportnethash_test(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port, ip_set_ip_t ip1)
+{
+ struct ip_set_ipportnethash *map = set->data;
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+
+ return (ipportnethash_id(set, hash_ip, ip, port, ip1) != UINT_MAX);
+}
+
+static int
+ipportnethash_utest(struct ip_set *set, const void *data, u_int32_t size,
+ ip_set_ip_t *hash_ip)
+{
+ const struct ip_set_req_ipportnethash *req = data;
+
+ if (req->cidr <= 0 || req->cidr > 32)
+ return -EINVAL;
+ return (req->cidr == 32
+ ? ipportnethash_test(set, hash_ip, req->ip, req->port,
+ req->ip1)
+ : ipportnethash_test_cidr(set, hash_ip, req->ip, req->port,
+ req->ip1, req->cidr));
+}
+
+#define KADT_CONDITION \
+ ip_set_ip_t port, ip1; \
+ \
+ if (flags[index+2] == 0) \
+ return 0; \
+ \
+ port = get_port(skb, flags[index+1]); \
+ ip1 = ipaddr(skb, flags[index+2]); \
+ \
+ if (port == INVALID_PORT) \
+ return 0;
+
+KADT(ipportnethash, test, ipaddr, port, ip1)
+
+static inline int
+__ipportnet_add(struct ip_set_ipportnethash *map,
+ ip_set_ip_t hash_ip, ip_set_ip_t ip1)
+{
+ __u32 probe;
+ u_int16_t i;
+ struct ipportip *elem, *slot = NULL;
+
+ for (i = 0; i < map->probes; i++) {
+ probe = jhash_ip2(map, i, hash_ip, ip1) % map->hashsize;
+ elem = HARRAY_ELEM(map->members, struct ipportip *, probe);
+ if (elem->ip == hash_ip && elem->ip1 == ip1)
+ return -EEXIST;
+ if (!(slot || elem->ip || elem->ip1))
+ slot = elem;
+ /* There can be deleted entries, must check all slots */
+ }
+ if (slot) {
+ slot->ip = hash_ip;
+ slot->ip1 = ip1;
+ map->elements++;
+ return 0;
+ }
+ /* Trigger rehashing */
+ return -EAGAIN;
+}
+
+static inline int
+__ipportnethash_add(struct ip_set_ipportnethash *map,
+ struct ipportip *elem)
+{
+ return __ipportnet_add(map, elem->ip, elem->ip1);
+}
+
+static inline int
+ipportnethash_add(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port,
+ ip_set_ip_t ip1, uint8_t cidr)
+{
+ struct ip_set_ipportnethash *map = set->data;
+ struct ipportip;
+ int ret;
+
+ if (map->elements > limit)
+ return -ERANGE;
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+ if (cidr <= 0 || cidr >= 32)
+ return -EINVAL;
+ if (map->nets[cidr-1] == UINT16_MAX)
+ return -ERANGE;
+
+ *hash_ip = pack_ip_port(map, ip, port);
+ ip1 = pack_ip_cidr(ip1, cidr);
+ if (!(*hash_ip || ip1))
+ return -ERANGE;
+
+ ret =__ipportnet_add(map, *hash_ip, ip1);
+ if (ret == 0) {
+ if (!map->nets[cidr-1]++)
+ add_cidr_size(map->cidr, cidr);
+ map->elements++;
+ }
+ return ret;
+}
+
+#undef KADT_CONDITION
+#define KADT_CONDITION \
+ struct ip_set_ipportnethash *map = set->data; \
+ uint8_t cidr = map->cidr[0] ? map->cidr[0] : 31; \
+ ip_set_ip_t port, ip1; \
+ \
+ if (flags[index+2] == 0) \
+ return 0; \
+ \
+ port = get_port(skb, flags[index+1]); \
+ ip1 = ipaddr(skb, flags[index+2]); \
+ \
+ if (port == INVALID_PORT) \
+ return 0;
+
+UADT(ipportnethash, add, req->port, req->ip1, req->cidr)
+KADT(ipportnethash, add, ipaddr, port, ip1, cidr)
+
+static inline void
+__ipportnethash_retry(struct ip_set_ipportnethash *tmp,
+ struct ip_set_ipportnethash *map)
+{
+ tmp->first_ip = map->first_ip;
+ tmp->last_ip = map->last_ip;
+ memcpy(tmp->cidr, map->cidr, sizeof(tmp->cidr));
+ memcpy(tmp->nets, map->nets, sizeof(tmp->nets));
+}
+
+HASH_RETRY2(ipportnethash, struct ipportip)
+
+static inline int
+ipportnethash_del(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, ip_set_ip_t port,
+ ip_set_ip_t ip1, uint8_t cidr)
+{
+ struct ip_set_ipportnethash *map = set->data;
+ ip_set_ip_t id;
+ struct ipportip *elem;
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+ if (!ip)
+ return -ERANGE;
+ if (cidr <= 0 || cidr >= 32)
+ return -EINVAL;
+
+ id = ipportnethash_id_cidr(set, hash_ip, ip, port, ip1, cidr);
+
+ if (id == UINT_MAX)
+ return -EEXIST;
+
+ elem = HARRAY_ELEM(map->members, struct ipportip *, id);
+ elem->ip = elem->ip1 = 0;
+ map->elements--;
+ if (!map->nets[cidr-1]--)
+ del_cidr_size(map->cidr, cidr);
+
+ return 0;
+}
+
+UADT(ipportnethash, del, req->port, req->ip1, req->cidr)
+KADT(ipportnethash, del, ipaddr, port, ip1, cidr)
+
+static inline int
+__ipportnethash_create(const struct ip_set_req_ipportnethash_create *req,
+ struct ip_set_ipportnethash *map)
+{
+ if (req->to - req->from > MAX_RANGE) {
+ ip_set_printk("range too big, %d elements (max %d)",
+ req->to - req->from + 1, MAX_RANGE+1);
+ return -ENOEXEC;
+ }
+ map->first_ip = req->from;
+ map->last_ip = req->to;
+ memset(map->cidr, 0, sizeof(map->cidr));
+ memset(map->nets, 0, sizeof(map->nets));
+ return 0;
+}
+
+HASH_CREATE(ipportnethash, struct ipportip)
+HASH_DESTROY(ipportnethash)
+HASH_FLUSH_CIDR(ipportnethash, struct ipportip);
+
+static inline void
+__ipportnethash_list_header(const struct ip_set_ipportnethash *map,
+ struct ip_set_req_ipportnethash_create *header)
+{
+ header->from = map->first_ip;
+ header->to = map->last_ip;
+}
+
+HASH_LIST_HEADER(ipportnethash)
+
+HASH_LIST_MEMBERS_SIZE(ipportnethash, struct ipportip)
+HASH_LIST_MEMBERS_MEMCPY(ipportnethash, struct ipportip)
+
+IP_SET_RTYPE(ipportnethash, IPSET_TYPE_IP | IPSET_TYPE_PORT
+ | IPSET_TYPE_IP1 | IPSET_DATA_TRIPLE)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("ipportnethash type of IP sets");
+module_param(limit, int, 0600);
+MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets");
+
+REGISTER_MODULE(ipportnethash)
--- /dev/null
+++ b/net/ipv4/netfilter/ip_set_iptree.c
@@ -0,0 +1,466 @@
+/* Copyright (C) 2005-2008 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.
+ */
+
+/* Kernel module implementing an IP set type: the iptree type */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+
+#include <linux/netfilter_ipv4/ip_set.h>
+#include <linux/netfilter_ipv4/ip_set_bitmaps.h>
+#include <linux/netfilter_ipv4/ip_set_iptree.h>
+
+static int limit = MAX_RANGE;
+
+/* Garbage collection interval in seconds: */
+#define IPTREE_GC_TIME 5*60
+/* Sleep so many milliseconds before trying again
+ * to delete the gc timer at destroying/flushing a set */
+#define IPTREE_DESTROY_SLEEP 100
+
+static __KMEM_CACHE_T__ *branch_cachep;
+static __KMEM_CACHE_T__ *leaf_cachep;
+
+
+#if defined(__LITTLE_ENDIAN)
+#define ABCD(a,b,c,d,addrp) do { \
+ a = ((unsigned char *)addrp)[3]; \
+ b = ((unsigned char *)addrp)[2]; \
+ c = ((unsigned char *)addrp)[1]; \
+ d = ((unsigned char *)addrp)[0]; \
+} while (0)
+#elif defined(__BIG_ENDIAN)
+#define ABCD(a,b,c,d,addrp) do { \
+ a = ((unsigned char *)addrp)[0]; \
+ b = ((unsigned char *)addrp)[1]; \
+ c = ((unsigned char *)addrp)[2]; \
+ d = ((unsigned char *)addrp)[3]; \
+} while (0)
+#else
+#error "Please fix asm/byteorder.h"
+#endif /* __LITTLE_ENDIAN */
+
+#define TESTIP_WALK(map, elem, branch) do { \
+ if ((map)->tree[elem]) { \
+ branch = (map)->tree[elem]; \
+ } else \
+ return 0; \
+} while (0)
+
+static inline int
+iptree_test(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ struct ip_set_iptree *map = set->data;
+ struct ip_set_iptreeb *btree;
+ struct ip_set_iptreec *ctree;
+ struct ip_set_iptreed *dtree;
+ unsigned char a,b,c,d;
+
+ if (!ip)
+ return -ERANGE;
+
+ *hash_ip = ip;
+ ABCD(a, b, c, d, hash_ip);
+ DP("%u %u %u %u timeout %u", a, b, c, d, map->timeout);
+ TESTIP_WALK(map, a, btree);
+ TESTIP_WALK(btree, b, ctree);
+ TESTIP_WALK(ctree, c, dtree);
+ DP("%lu %lu", dtree->expires[d], jiffies);
+ return dtree->expires[d]
+ && (!map->timeout
+ || time_after(dtree->expires[d], jiffies));
+}
+
+#define KADT_CONDITION
+
+UADT(iptree, test)
+KADT(iptree, test, ipaddr)
+
+#define ADDIP_WALK(map, elem, branch, type, cachep) do { \
+ if ((map)->tree[elem]) { \
+ DP("found %u", elem); \
+ branch = (map)->tree[elem]; \
+ } else { \
+ branch = (type *) \
+ kmem_cache_alloc(cachep, GFP_ATOMIC); \
+ if (branch == NULL) \
+ return -ENOMEM; \
+ memset(branch, 0, sizeof(*branch)); \
+ (map)->tree[elem] = branch; \
+ DP("alloc %u", elem); \
+ } \
+} while (0)
+
+static inline int
+iptree_add(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, unsigned int timeout)
+{
+ struct ip_set_iptree *map = set->data;
+ struct ip_set_iptreeb *btree;
+ struct ip_set_iptreec *ctree;
+ struct ip_set_iptreed *dtree;
+ unsigned char a,b,c,d;
+ int ret = 0;
+
+ if (!ip || map->elements >= limit)
+ /* We could call the garbage collector
+ * but it's probably overkill */
+ return -ERANGE;
+
+ *hash_ip = ip;
+ ABCD(a, b, c, d, hash_ip);
+ DP("%u %u %u %u timeout %u", a, b, c, d, timeout);
+ ADDIP_WALK(map, a, btree, struct ip_set_iptreeb, branch_cachep);
+ ADDIP_WALK(btree, b, ctree, struct ip_set_iptreec, branch_cachep);
+ ADDIP_WALK(ctree, c, dtree, struct ip_set_iptreed, leaf_cachep);
+ if (dtree->expires[d]
+ && (!map->timeout || time_after(dtree->expires[d], jiffies)))
+ ret = -EEXIST;
+ if (map->timeout && timeout == 0)
+ timeout = map->timeout;
+ dtree->expires[d] = map->timeout ? (timeout * HZ + jiffies) : 1;
+ /* Lottery: I won! */
+ if (dtree->expires[d] == 0)
+ dtree->expires[d] = 1;
+ DP("%u %lu", d, dtree->expires[d]);
+ if (ret == 0)
+ map->elements++;
+ return ret;
+}
+
+UADT(iptree, add, req->timeout)
+KADT(iptree, add, ipaddr, 0)
+
+#define DELIP_WALK(map, elem, branch) do { \
+ if ((map)->tree[elem]) { \
+ branch = (map)->tree[elem]; \
+ } else \
+ return -EEXIST; \
+} while (0)
+
+static inline int
+iptree_del(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ struct ip_set_iptree *map = set->data;
+ struct ip_set_iptreeb *btree;
+ struct ip_set_iptreec *ctree;
+ struct ip_set_iptreed *dtree;
+ unsigned char a,b,c,d;
+
+ if (!ip)
+ return -ERANGE;
+
+ *hash_ip = ip;
+ ABCD(a, b, c, d, hash_ip);
+ DELIP_WALK(map, a, btree);
+ DELIP_WALK(btree, b, ctree);
+ DELIP_WALK(ctree, c, dtree);
+
+ if (dtree->expires[d]) {
+ dtree->expires[d] = 0;
+ map->elements--;
+ return 0;
+ }
+ return -EEXIST;
+}
+
+UADT(iptree, del)
+KADT(iptree, del, ipaddr)
+
+#define LOOP_WALK_BEGIN(map, i, branch) \
+ for (i = 0; i < 256; i++) { \
+ if (!(map)->tree[i]) \
+ continue; \
+ branch = (map)->tree[i]
+
+#define LOOP_WALK_END }
+
+static void
+ip_tree_gc(unsigned long ul_set)
+{
+ struct ip_set *set = (struct ip_set *) ul_set;
+ struct ip_set_iptree *map = set->data;
+ struct ip_set_iptreeb *btree;
+ struct ip_set_iptreec *ctree;
+ struct ip_set_iptreed *dtree;
+ unsigned int a,b,c,d;
+ unsigned char i,j,k;
+
+ i = j = k = 0;
+ DP("gc: %s", set->name);
+ write_lock_bh(&set->lock);
+ LOOP_WALK_BEGIN(map, a, btree);
+ LOOP_WALK_BEGIN(btree, b, ctree);
+ LOOP_WALK_BEGIN(ctree, c, dtree);
+ for (d = 0; d < 256; d++) {
+ if (dtree->expires[d]) {
+ DP("gc: %u %u %u %u: expires %lu jiffies %lu",
+ a, b, c, d,
+ dtree->expires[d], jiffies);
+ if (map->timeout
+ && time_before(dtree->expires[d], jiffies)) {
+ dtree->expires[d] = 0;
+ map->elements--;
+ } else
+ k = 1;
+ }
+ }
+ if (k == 0) {
+ DP("gc: %s: leaf %u %u %u empty",
+ set->name, a, b, c);
+ kmem_cache_free(leaf_cachep, dtree);
+ ctree->tree[c] = NULL;
+ } else {
+ DP("gc: %s: leaf %u %u %u not empty",
+ set->name, a, b, c);
+ j = 1;
+ k = 0;
+ }
+ LOOP_WALK_END;
+ if (j == 0) {
+ DP("gc: %s: branch %u %u empty",
+ set->name, a, b);
+ kmem_cache_free(branch_cachep, ctree);
+ btree->tree[b] = NULL;
+ } else {
+ DP("gc: %s: branch %u %u not empty",
+ set->name, a, b);
+ i = 1;
+ j = k = 0;
+ }
+ LOOP_WALK_END;
+ if (i == 0) {
+ DP("gc: %s: branch %u empty",
+ set->name, a);
+ kmem_cache_free(branch_cachep, btree);
+ map->tree[a] = NULL;
+ } else {
+ DP("gc: %s: branch %u not empty",
+ set->name, a);
+ i = j = k = 0;
+ }
+ LOOP_WALK_END;
+ write_unlock_bh(&set->lock);
+
+ map->gc.expires = jiffies + map->gc_interval * HZ;
+ add_timer(&map->gc);
+}
+
+static inline void
+init_gc_timer(struct ip_set *set)
+{
+ struct ip_set_iptree *map = set->data;
+
+ /* Even if there is no timeout for the entries,
+ * we still have to call gc because delete
+ * do not clean up empty branches */
+ map->gc_interval = IPTREE_GC_TIME;
+ init_timer(&map->gc);
+ map->gc.data = (unsigned long) set;
+ map->gc.function = ip_tree_gc;
+ map->gc.expires = jiffies + map->gc_interval * HZ;
+ add_timer(&map->gc);
+}
+
+static int
+iptree_create(struct ip_set *set, const void *data, u_int32_t size)
+{
+ const struct ip_set_req_iptree_create *req = data;
+ struct ip_set_iptree *map;
+
+ if (size != sizeof(struct ip_set_req_iptree_create)) {
+ ip_set_printk("data length wrong (want %zu, have %lu)",
+ sizeof(struct ip_set_req_iptree_create),
+ (unsigned long)size);
+ return -EINVAL;
+ }
+
+ map = kmalloc(sizeof(struct ip_set_iptree), GFP_KERNEL);
+ if (!map) {
+ DP("out of memory for %zu bytes",
+ sizeof(struct ip_set_iptree));
+ return -ENOMEM;
+ }
+ memset(map, 0, sizeof(*map));
+ map->timeout = req->timeout;
+ map->elements = 0;
+ set->data = map;
+
+ init_gc_timer(set);
+
+ return 0;
+}
+
+static inline void
+__flush(struct ip_set_iptree *map)
+{
+ struct ip_set_iptreeb *btree;
+ struct ip_set_iptreec *ctree;
+ struct ip_set_iptreed *dtree;
+ unsigned int a,b,c;
+
+ LOOP_WALK_BEGIN(map, a, btree);
+ LOOP_WALK_BEGIN(btree, b, ctree);
+ LOOP_WALK_BEGIN(ctree, c, dtree);
+ kmem_cache_free(leaf_cachep, dtree);
+ LOOP_WALK_END;
+ kmem_cache_free(branch_cachep, ctree);
+ LOOP_WALK_END;
+ kmem_cache_free(branch_cachep, btree);
+ LOOP_WALK_END;
+ map->elements = 0;
+}
+
+static void
+iptree_destroy(struct ip_set *set)
+{
+ struct ip_set_iptree *map = set->data;
+
+ /* gc might be running */
+ while (!del_timer(&map->gc))
+ msleep(IPTREE_DESTROY_SLEEP);
+ __flush(map);
+ kfree(map);
+ set->data = NULL;
+}
+
+static void
+iptree_flush(struct ip_set *set)
+{
+ struct ip_set_iptree *map = set->data;
+ unsigned int timeout = map->timeout;
+
+ /* gc might be running */
+ while (!del_timer(&map->gc))
+ msleep(IPTREE_DESTROY_SLEEP);
+ __flush(map);
+ memset(map, 0, sizeof(*map));
+ map->timeout = timeout;
+
+ init_gc_timer(set);
+}
+
+static void
+iptree_list_header(const struct ip_set *set, void *data)
+{
+ const struct ip_set_iptree *map = set->data;
+ struct ip_set_req_iptree_create *header = data;
+
+ header->timeout = map->timeout;
+}
+
+static int
+iptree_list_members_size(const struct ip_set *set)
+{
+ const struct ip_set_iptree *map = set->data;
+ struct ip_set_iptreeb *btree;
+ struct ip_set_iptreec *ctree;
+ struct ip_set_iptreed *dtree;
+ unsigned int a,b,c,d;
+ unsigned int count = 0;
+
+ LOOP_WALK_BEGIN(map, a, btree);
+ LOOP_WALK_BEGIN(btree, b, ctree);
+ LOOP_WALK_BEGIN(ctree, c, dtree);
+ for (d = 0; d < 256; d++) {
+ if (dtree->expires[d]
+ && (!map->timeout || time_after(dtree->expires[d], jiffies)))
+ count++;
+ }
+ LOOP_WALK_END;
+ LOOP_WALK_END;
+ LOOP_WALK_END;
+
+ DP("members %u", count);
+ return (count * sizeof(struct ip_set_req_iptree));
+}
+
+static void
+iptree_list_members(const struct ip_set *set, void *data)
+{
+ const struct ip_set_iptree *map = set->data;
+ struct ip_set_iptreeb *btree;
+ struct ip_set_iptreec *ctree;
+ struct ip_set_iptreed *dtree;
+ unsigned int a,b,c,d;
+ size_t offset = 0;
+ struct ip_set_req_iptree *entry;
+
+ LOOP_WALK_BEGIN(map, a, btree);
+ LOOP_WALK_BEGIN(btree, b, ctree);
+ LOOP_WALK_BEGIN(ctree, c, dtree);
+ for (d = 0; d < 256; d++) {
+ if (dtree->expires[d]
+ && (!map->timeout || time_after(dtree->expires[d], jiffies))) {
+ entry = data + offset;
+ entry->ip = ((a << 24) | (b << 16) | (c << 8) | d);
+ entry->timeout = !map->timeout ? 0
+ : (dtree->expires[d] - jiffies)/HZ;
+ offset += sizeof(struct ip_set_req_iptree);
+ }
+ }
+ LOOP_WALK_END;
+ LOOP_WALK_END;
+ LOOP_WALK_END;
+}
+
+IP_SET_TYPE(iptree, IPSET_TYPE_IP | IPSET_DATA_SINGLE)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("iptree type of IP sets");
+module_param(limit, int, 0600);
+MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets");
+
+static int __init ip_set_iptree_init(void)
+{
+ int ret;
+
+ branch_cachep = KMEM_CACHE_CREATE("ip_set_iptreeb",
+ sizeof(struct ip_set_iptreeb));
+ if (!branch_cachep) {
+ printk(KERN_ERR "Unable to create ip_set_iptreeb slab cache\n");
+ ret = -ENOMEM;
+ goto out;
+ }
+ leaf_cachep = KMEM_CACHE_CREATE("ip_set_iptreed",
+ sizeof(struct ip_set_iptreed));
+ if (!leaf_cachep) {
+ printk(KERN_ERR "Unable to create ip_set_iptreed slab cache\n");
+ ret = -ENOMEM;
+ goto free_branch;
+ }
+ ret = ip_set_register_set_type(&ip_set_iptree);
+ if (ret == 0)
+ goto out;
+
+ kmem_cache_destroy(leaf_cachep);
+ free_branch:
+ kmem_cache_destroy(branch_cachep);
+ out:
+ return ret;
+}
+
+static void __exit ip_set_iptree_fini(void)
+{
+ /* FIXME: possible race with ip_set_create() */
+ ip_set_unregister_set_type(&ip_set_iptree);
+ kmem_cache_destroy(leaf_cachep);
+ kmem_cache_destroy(branch_cachep);
+}
+
+module_init(ip_set_iptree_init);
+module_exit(ip_set_iptree_fini);
--- /dev/null
+++ b/net/ipv4/netfilter/ip_set_iptreemap.c
@@ -0,0 +1,708 @@
+/* Copyright (C) 2007 Sven Wegener <sven.wegener@stealer.net>
+ *
+ * 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.
+ */
+
+/* This modules implements the iptreemap ipset type. It uses bitmaps to
+ * represent every single IPv4 address as a bit. The bitmaps are managed in a
+ * tree structure, where the first three octets of an address are used as an
+ * index to find the bitmap and the last octet is used as the bit number.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+
+#include <linux/netfilter_ipv4/ip_set.h>
+#include <linux/netfilter_ipv4/ip_set_bitmaps.h>
+#include <linux/netfilter_ipv4/ip_set_iptreemap.h>
+
+#define IPTREEMAP_DEFAULT_GC_TIME (5 * 60)
+#define IPTREEMAP_DESTROY_SLEEP (100)
+
+static __KMEM_CACHE_T__ *cachep_b;
+static __KMEM_CACHE_T__ *cachep_c;
+static __KMEM_CACHE_T__ *cachep_d;
+
+static struct ip_set_iptreemap_d *fullbitmap_d;
+static struct ip_set_iptreemap_c *fullbitmap_c;
+static struct ip_set_iptreemap_b *fullbitmap_b;
+
+#if defined(__LITTLE_ENDIAN)
+#define ABCD(a, b, c, d, addr) \
+ do { \
+ a = ((unsigned char *)addr)[3]; \
+ b = ((unsigned char *)addr)[2]; \
+ c = ((unsigned char *)addr)[1]; \
+ d = ((unsigned char *)addr)[0]; \
+ } while (0)
+#elif defined(__BIG_ENDIAN)
+#define ABCD(a,b,c,d,addrp) do { \
+ a = ((unsigned char *)addrp)[0]; \
+ b = ((unsigned char *)addrp)[1]; \
+ c = ((unsigned char *)addrp)[2]; \
+ d = ((unsigned char *)addrp)[3]; \
+} while (0)
+#else
+#error "Please fix asm/byteorder.h"
+#endif /* __LITTLE_ENDIAN */
+
+#define TESTIP_WALK(map, elem, branch, full) \
+ do { \
+ branch = (map)->tree[elem]; \
+ if (!branch) \
+ return 0; \
+ else if (branch == full) \
+ return 1; \
+ } while (0)
+
+#define ADDIP_WALK(map, elem, branch, type, cachep, full) \
+ do { \
+ branch = (map)->tree[elem]; \
+ if (!branch) { \
+ branch = (type *) kmem_cache_alloc(cachep, GFP_ATOMIC); \
+ if (!branch) \
+ return -ENOMEM; \
+ memset(branch, 0, sizeof(*branch)); \
+ (map)->tree[elem] = branch; \
+ } else if (branch == full) { \
+ return -EEXIST; \
+ } \
+ } while (0)
+
+#define ADDIP_RANGE_LOOP(map, a, a1, a2, hint, branch, full, cachep, free) \
+ for (a = a1; a <= a2; a++) { \
+ branch = (map)->tree[a]; \
+ if (branch != full) { \
+ if ((a > a1 && a < a2) || (hint)) { \
+ if (branch) \
+ free(branch); \
+ (map)->tree[a] = full; \
+ continue; \
+ } else if (!branch) { \
+ branch = kmem_cache_alloc(cachep, GFP_ATOMIC); \
+ if (!branch) \
+ return -ENOMEM; \
+ memset(branch, 0, sizeof(*branch)); \
+ (map)->tree[a] = branch; \
+ }
+
+#define ADDIP_RANGE_LOOP_END() \
+ } \
+ }
+
+#define DELIP_WALK(map, elem, branch, cachep, full, flags) \
+ do { \
+ branch = (map)->tree[elem]; \
+ if (!branch) { \
+ return -EEXIST; \
+ } else if (branch == full) { \
+ branch = kmem_cache_alloc(cachep, flags); \
+ if (!branch) \
+ return -ENOMEM; \
+ memcpy(branch, full, sizeof(*full)); \
+ (map)->tree[elem] = branch; \
+ } \
+ } while (0)
+
+#define DELIP_RANGE_LOOP(map, a, a1, a2, hint, branch, full, cachep, free, flags) \
+ for (a = a1; a <= a2; a++) { \
+ branch = (map)->tree[a]; \
+ if (branch) { \
+ if ((a > a1 && a < a2) || (hint)) { \
+ if (branch != full) \
+ free(branch); \
+ (map)->tree[a] = NULL; \
+ continue; \
+ } else if (branch == full) { \
+ branch = kmem_cache_alloc(cachep, flags); \
+ if (!branch) \
+ return -ENOMEM; \
+ memcpy(branch, full, sizeof(*branch)); \
+ (map)->tree[a] = branch; \
+ }
+
+#define DELIP_RANGE_LOOP_END() \
+ } \
+ }
+
+#define LOOP_WALK_BEGIN(map, i, branch) \
+ for (i = 0; i < 256; i++) { \
+ branch = (map)->tree[i]; \
+ if (likely(!branch)) \
+ continue;
+
+#define LOOP_WALK_END() \
+ }
+
+#define LOOP_WALK_BEGIN_GC(map, i, branch, full, cachep, count) \
+ count = -256; \
+ for (i = 0; i < 256; i++) { \
+ branch = (map)->tree[i]; \
+ if (likely(!branch)) \
+ continue; \
+ count++; \
+ if (branch == full) { \
+ count++; \
+ continue; \
+ }
+
+#define LOOP_WALK_END_GC(map, i, branch, full, cachep, count) \
+ if (-256 == count) { \
+ kmem_cache_free(cachep, branch); \
+ (map)->tree[i] = NULL; \
+ } else if (256 == count) { \
+ kmem_cache_free(cachep, branch); \
+ (map)->tree[i] = full; \
+ } \
+ }
+
+#define LOOP_WALK_BEGIN_COUNT(map, i, branch, inrange, count) \
+ for (i = 0; i < 256; i++) { \
+ if (!(map)->tree[i]) { \
+ if (inrange) { \
+ count++; \
+ inrange = 0; \
+ } \
+ continue; \
+ } \
+ branch = (map)->tree[i];
+
+#define LOOP_WALK_END_COUNT() \
+ }
+
+#define GETVALUE1(a, a1, b1, r) \
+ (a == a1 ? b1 : r)
+
+#define GETVALUE2(a, b, a1, b1, c1, r) \
+ (a == a1 && b == b1 ? c1 : r)
+
+#define GETVALUE3(a, b, c, a1, b1, c1, d1, r) \
+ (a == a1 && b == b1 && c == c1 ? d1 : r)
+
+#define CHECK1(a, a1, a2, b1, b2, c1, c2, d1, d2) \
+ ( \
+ GETVALUE1(a, a1, b1, 0) == 0 \
+ && GETVALUE1(a, a2, b2, 255) == 255 \
+ && c1 == 0 \
+ && c2 == 255 \
+ && d1 == 0 \
+ && d2 == 255 \
+ )
+
+#define CHECK2(a, b, a1, a2, b1, b2, c1, c2, d1, d2) \
+ ( \
+ GETVALUE2(a, b, a1, b1, c1, 0) == 0 \
+ && GETVALUE2(a, b, a2, b2, c2, 255) == 255 \
+ && d1 == 0 \
+ && d2 == 255 \
+ )
+
+#define CHECK3(a, b, c, a1, a2, b1, b2, c1, c2, d1, d2) \
+ ( \
+ GETVALUE3(a, b, c, a1, b1, c1, d1, 0) == 0 \
+ && GETVALUE3(a, b, c, a2, b2, c2, d2, 255) == 255 \
+ )
+
+
+static inline void
+free_d(struct ip_set_iptreemap_d *map)
+{
+ kmem_cache_free(cachep_d, map);
+}
+
+static inline void
+free_c(struct ip_set_iptreemap_c *map)
+{
+ struct ip_set_iptreemap_d *dtree;
+ unsigned int i;
+
+ LOOP_WALK_BEGIN(map, i, dtree) {
+ if (dtree != fullbitmap_d)
+ free_d(dtree);
+ } LOOP_WALK_END();
+
+ kmem_cache_free(cachep_c, map);
+}
+
+static inline void
+free_b(struct ip_set_iptreemap_b *map)
+{
+ struct ip_set_iptreemap_c *ctree;
+ unsigned int i;
+
+ LOOP_WALK_BEGIN(map, i, ctree) {
+ if (ctree != fullbitmap_c)
+ free_c(ctree);
+ } LOOP_WALK_END();
+
+ kmem_cache_free(cachep_b, map);
+}
+
+static inline int
+iptreemap_test(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ struct ip_set_iptreemap *map = set->data;
+ struct ip_set_iptreemap_b *btree;
+ struct ip_set_iptreemap_c *ctree;
+ struct ip_set_iptreemap_d *dtree;
+ unsigned char a, b, c, d;
+
+ *hash_ip = ip;
+
+ ABCD(a, b, c, d, hash_ip);
+
+ TESTIP_WALK(map, a, btree, fullbitmap_b);
+ TESTIP_WALK(btree, b, ctree, fullbitmap_c);
+ TESTIP_WALK(ctree, c, dtree, fullbitmap_d);
+
+ return !!test_bit(d, (void *) dtree->bitmap);
+}
+
+#define KADT_CONDITION
+
+UADT(iptreemap, test)
+KADT(iptreemap, test, ipaddr)
+
+static inline int
+__addip_single(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ struct ip_set_iptreemap *map = (struct ip_set_iptreemap *) set->data;
+ struct ip_set_iptreemap_b *btree;
+ struct ip_set_iptreemap_c *ctree;
+ struct ip_set_iptreemap_d *dtree;
+ unsigned char a, b, c, d;
+
+ *hash_ip = ip;
+
+ ABCD(a, b, c, d, hash_ip);
+
+ ADDIP_WALK(map, a, btree, struct ip_set_iptreemap_b, cachep_b, fullbitmap_b);
+ ADDIP_WALK(btree, b, ctree, struct ip_set_iptreemap_c, cachep_c, fullbitmap_c);
+ ADDIP_WALK(ctree, c, dtree, struct ip_set_iptreemap_d, cachep_d, fullbitmap_d);
+
+ if (__test_and_set_bit(d, (void *) dtree->bitmap))
+ return -EEXIST;
+
+ __set_bit(b, (void *) btree->dirty);
+
+ return 0;
+}
+
+static inline int
+iptreemap_add(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t start, ip_set_ip_t end)
+{
+ struct ip_set_iptreemap *map = set->data;
+ struct ip_set_iptreemap_b *btree;
+ struct ip_set_iptreemap_c *ctree;
+ struct ip_set_iptreemap_d *dtree;
+ unsigned int a, b, c, d;
+ unsigned char a1, b1, c1, d1;
+ unsigned char a2, b2, c2, d2;
+
+ if (start == end)
+ return __addip_single(set, hash_ip, start);
+
+ *hash_ip = start;
+
+ ABCD(a1, b1, c1, d1, &start);
+ ABCD(a2, b2, c2, d2, &end);
+
+ /* This is sooo ugly... */
+ ADDIP_RANGE_LOOP(map, a, a1, a2, CHECK1(a, a1, a2, b1, b2, c1, c2, d1, d2), btree, fullbitmap_b, cachep_b, free_b) {
+ ADDIP_RANGE_LOOP(btree, b, GETVALUE1(a, a1, b1, 0), GETVALUE1(a, a2, b2, 255), CHECK2(a, b, a1, a2, b1, b2, c1, c2, d1, d2), ctree, fullbitmap_c, cachep_c, free_c) {
+ ADDIP_RANGE_LOOP(ctree, c, GETVALUE2(a, b, a1, b1, c1, 0), GETVALUE2(a, b, a2, b2, c2, 255), CHECK3(a, b, c, a1, a2, b1, b2, c1, c2, d1, d2), dtree, fullbitmap_d, cachep_d, free_d) {
+ for (d = GETVALUE3(a, b, c, a1, b1, c1, d1, 0); d <= GETVALUE3(a, b, c, a2, b2, c2, d2, 255); d++)
+ __set_bit(d, (void *) dtree->bitmap);
+ __set_bit(b, (void *) btree->dirty);
+ } ADDIP_RANGE_LOOP_END();
+ } ADDIP_RANGE_LOOP_END();
+ } ADDIP_RANGE_LOOP_END();
+
+ return 0;
+}
+
+UADT0(iptreemap, add, min(req->ip, req->end), max(req->ip, req->end))
+KADT(iptreemap, add, ipaddr, ip)
+
+static inline int
+__delip_single(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, gfp_t flags)
+{
+ struct ip_set_iptreemap *map = set->data;
+ struct ip_set_iptreemap_b *btree;
+ struct ip_set_iptreemap_c *ctree;
+ struct ip_set_iptreemap_d *dtree;
+ unsigned char a,b,c,d;
+
+ *hash_ip = ip;
+
+ ABCD(a, b, c, d, hash_ip);
+
+ DELIP_WALK(map, a, btree, cachep_b, fullbitmap_b, flags);
+ DELIP_WALK(btree, b, ctree, cachep_c, fullbitmap_c, flags);
+ DELIP_WALK(ctree, c, dtree, cachep_d, fullbitmap_d, flags);
+
+ if (!__test_and_clear_bit(d, (void *) dtree->bitmap))
+ return -EEXIST;
+
+ __set_bit(b, (void *) btree->dirty);
+
+ return 0;
+}
+
+static inline int
+iptreemap_del(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t start, ip_set_ip_t end, gfp_t flags)
+{
+ struct ip_set_iptreemap *map = set->data;
+ struct ip_set_iptreemap_b *btree;
+ struct ip_set_iptreemap_c *ctree;
+ struct ip_set_iptreemap_d *dtree;
+ unsigned int a, b, c, d;
+ unsigned char a1, b1, c1, d1;
+ unsigned char a2, b2, c2, d2;
+
+ if (start == end)
+ return __delip_single(set, hash_ip, start, flags);
+
+ *hash_ip = start;
+
+ ABCD(a1, b1, c1, d1, &start);
+ ABCD(a2, b2, c2, d2, &end);
+
+ /* This is sooo ugly... */
+ DELIP_RANGE_LOOP(map, a, a1, a2, CHECK1(a, a1, a2, b1, b2, c1, c2, d1, d2), btree, fullbitmap_b, cachep_b, free_b, flags) {
+ DELIP_RANGE_LOOP(btree, b, GETVALUE1(a, a1, b1, 0), GETVALUE1(a, a2, b2, 255), CHECK2(a, b, a1, a2, b1, b2, c1, c2, d1, d2), ctree, fullbitmap_c, cachep_c, free_c, flags) {
+ DELIP_RANGE_LOOP(ctree, c, GETVALUE2(a, b, a1, b1, c1, 0), GETVALUE2(a, b, a2, b2, c2, 255), CHECK3(a, b, c, a1, a2, b1, b2, c1, c2, d1, d2), dtree, fullbitmap_d, cachep_d, free_d, flags) {
+ for (d = GETVALUE3(a, b, c, a1, b1, c1, d1, 0); d <= GETVALUE3(a, b, c, a2, b2, c2, d2, 255); d++)
+ __clear_bit(d, (void *) dtree->bitmap);
+ __set_bit(b, (void *) btree->dirty);
+ } DELIP_RANGE_LOOP_END();
+ } DELIP_RANGE_LOOP_END();
+ } DELIP_RANGE_LOOP_END();
+
+ return 0;
+}
+
+UADT0(iptreemap, del, min(req->ip, req->end), max(req->ip, req->end), GFP_KERNEL)
+KADT(iptreemap, del, ipaddr, ip, GFP_ATOMIC)
+
+/* Check the status of the bitmap
+ * -1 == all bits cleared
+ * 1 == all bits set
+ * 0 == anything else
+ */
+static inline int
+bitmap_status(struct ip_set_iptreemap_d *dtree)
+{
+ unsigned char first = dtree->bitmap[0];
+ int a;
+
+ for (a = 1; a < 32; a++)
+ if (dtree->bitmap[a] != first)
+ return 0;
+
+ return (first == 0 ? -1 : (first == 255 ? 1 : 0));
+}
+
+static void
+gc(unsigned long addr)
+{
+ struct ip_set *set = (struct ip_set *) addr;
+ struct ip_set_iptreemap *map = set->data;
+ struct ip_set_iptreemap_b *btree;
+ struct ip_set_iptreemap_c *ctree;
+ struct ip_set_iptreemap_d *dtree;
+ unsigned int a, b, c;
+ int i, j, k;
+
+ write_lock_bh(&set->lock);
+
+ LOOP_WALK_BEGIN_GC(map, a, btree, fullbitmap_b, cachep_b, i) {
+ LOOP_WALK_BEGIN_GC(btree, b, ctree, fullbitmap_c, cachep_c, j) {
+ if (!__test_and_clear_bit(b, (void *) btree->dirty))
+ continue;
+ LOOP_WALK_BEGIN_GC(ctree, c, dtree, fullbitmap_d, cachep_d, k) {
+ switch (bitmap_status(dtree)) {
+ case -1:
+ kmem_cache_free(cachep_d, dtree);
+ ctree->tree[c] = NULL;
+ k--;
+ break;
+ case 1:
+ kmem_cache_free(cachep_d, dtree);
+ ctree->tree[c] = fullbitmap_d;
+ k++;
+ break;
+ }
+ } LOOP_WALK_END();
+ } LOOP_WALK_END_GC(btree, b, ctree, fullbitmap_c, cachep_c, k);
+ } LOOP_WALK_END_GC(map, a, btree, fullbitmap_b, cachep_b, j);
+
+ write_unlock_bh(&set->lock);
+
+ map->gc.expires = jiffies + map->gc_interval * HZ;
+ add_timer(&map->gc);
+}
+
+static inline void
+init_gc_timer(struct ip_set *set)
+{
+ struct ip_set_iptreemap *map = set->data;
+
+ init_timer(&map->gc);
+ map->gc.data = (unsigned long) set;
+ map->gc.function = gc;
+ map->gc.expires = jiffies + map->gc_interval * HZ;
+ add_timer(&map->gc);
+}
+
+static int
+iptreemap_create(struct ip_set *set, const void *data, u_int32_t size)
+{
+ const struct ip_set_req_iptreemap_create *req = data;
+ struct ip_set_iptreemap *map;
+
+ map = kzalloc(sizeof(*map), GFP_KERNEL);
+ if (!map)
+ return -ENOMEM;
+
+ map->gc_interval = req->gc_interval ? req->gc_interval : IPTREEMAP_DEFAULT_GC_TIME;
+ set->data = map;
+
+ init_gc_timer(set);
+
+ return 0;
+}
+
+static inline void
+__flush(struct ip_set_iptreemap *map)
+{
+ struct ip_set_iptreemap_b *btree;
+ unsigned int a;
+
+ LOOP_WALK_BEGIN(map, a, btree);
+ if (btree != fullbitmap_b)
+ free_b(btree);
+ LOOP_WALK_END();
+}
+
+static void
+iptreemap_destroy(struct ip_set *set)
+{
+ struct ip_set_iptreemap *map = set->data;
+
+ while (!del_timer(&map->gc))
+ msleep(IPTREEMAP_DESTROY_SLEEP);
+
+ __flush(map);
+ kfree(map);
+
+ set->data = NULL;
+}
+
+static void
+iptreemap_flush(struct ip_set *set)
+{
+ struct ip_set_iptreemap *map = set->data;
+
+ while (!del_timer(&map->gc))
+ msleep(IPTREEMAP_DESTROY_SLEEP);
+
+ __flush(map);
+
+ memset(map, 0, sizeof(*map));
+
+ init_gc_timer(set);
+}
+
+static void
+iptreemap_list_header(const struct ip_set *set, void *data)
+{
+ struct ip_set_iptreemap *map = set->data;
+ struct ip_set_req_iptreemap_create *header = data;
+
+ header->gc_interval = map->gc_interval;
+}
+
+static int
+iptreemap_list_members_size(const struct ip_set *set)
+{
+ struct ip_set_iptreemap *map = set->data;
+ struct ip_set_iptreemap_b *btree;
+ struct ip_set_iptreemap_c *ctree;
+ struct ip_set_iptreemap_d *dtree;
+ unsigned int a, b, c, d, inrange = 0, count = 0;
+
+ LOOP_WALK_BEGIN_COUNT(map, a, btree, inrange, count) {
+ LOOP_WALK_BEGIN_COUNT(btree, b, ctree, inrange, count) {
+ LOOP_WALK_BEGIN_COUNT(ctree, c, dtree, inrange, count) {
+ for (d = 0; d < 256; d++) {
+ if (test_bit(d, (void *) dtree->bitmap)) {
+ inrange = 1;
+ } else if (inrange) {
+ count++;
+ inrange = 0;
+ }
+ }
+ } LOOP_WALK_END_COUNT();
+ } LOOP_WALK_END_COUNT();
+ } LOOP_WALK_END_COUNT();
+
+ if (inrange)
+ count++;
+
+ return (count * sizeof(struct ip_set_req_iptreemap));
+}
+
+static inline u_int32_t
+add_member(void *data, size_t offset, ip_set_ip_t start, ip_set_ip_t end)
+{
+ struct ip_set_req_iptreemap *entry = data + offset;
+
+ entry->ip = start;
+ entry->end = end;
+
+ return sizeof(*entry);
+}
+
+static void
+iptreemap_list_members(const struct ip_set *set, void *data)
+{
+ struct ip_set_iptreemap *map = set->data;
+ struct ip_set_iptreemap_b *btree;
+ struct ip_set_iptreemap_c *ctree;
+ struct ip_set_iptreemap_d *dtree;
+ unsigned int a, b, c, d, inrange = 0;
+ size_t offset = 0;
+ ip_set_ip_t start = 0, end = 0, ip;
+
+ LOOP_WALK_BEGIN(map, a, btree) {
+ LOOP_WALK_BEGIN(btree, b, ctree) {
+ LOOP_WALK_BEGIN(ctree, c, dtree) {
+ for (d = 0; d < 256; d++) {
+ if (test_bit(d, (void *) dtree->bitmap)) {
+ ip = ((a << 24) | (b << 16) | (c << 8) | d);
+ if (!inrange) {
+ inrange = 1;
+ start = ip;
+ } else if (end < ip - 1) {
+ offset += add_member(data, offset, start, end);
+ start = ip;
+ }
+ end = ip;
+ } else if (inrange) {
+ offset += add_member(data, offset, start, end);
+ inrange = 0;
+ }
+ }
+ } LOOP_WALK_END();
+ } LOOP_WALK_END();
+ } LOOP_WALK_END();
+
+ if (inrange)
+ add_member(data, offset, start, end);
+}
+
+IP_SET_TYPE(iptreemap, IPSET_TYPE_IP | IPSET_DATA_SINGLE)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Sven Wegener <sven.wegener@stealer.net>");
+MODULE_DESCRIPTION("iptreemap type of IP sets");
+
+static int __init ip_set_iptreemap_init(void)
+{
+ int ret = -ENOMEM;
+ int a;
+
+ cachep_b = KMEM_CACHE_CREATE("ip_set_iptreemap_b",
+ sizeof(struct ip_set_iptreemap_b));
+ if (!cachep_b) {
+ ip_set_printk("Unable to create ip_set_iptreemap_b slab cache");
+ goto out;
+ }
+
+ cachep_c = KMEM_CACHE_CREATE("ip_set_iptreemap_c",
+ sizeof(struct ip_set_iptreemap_c));
+ if (!cachep_c) {
+ ip_set_printk("Unable to create ip_set_iptreemap_c slab cache");
+ goto outb;
+ }
+
+ cachep_d = KMEM_CACHE_CREATE("ip_set_iptreemap_d",
+ sizeof(struct ip_set_iptreemap_d));
+ if (!cachep_d) {
+ ip_set_printk("Unable to create ip_set_iptreemap_d slab cache");
+ goto outc;
+ }
+
+ fullbitmap_d = kmem_cache_alloc(cachep_d, GFP_KERNEL);
+ if (!fullbitmap_d)
+ goto outd;
+
+ fullbitmap_c = kmem_cache_alloc(cachep_c, GFP_KERNEL);
+ if (!fullbitmap_c)
+ goto outbitmapd;
+
+ fullbitmap_b = kmem_cache_alloc(cachep_b, GFP_KERNEL);
+ if (!fullbitmap_b)
+ goto outbitmapc;
+
+ ret = ip_set_register_set_type(&ip_set_iptreemap);
+ if (0 > ret)
+ goto outbitmapb;
+
+ /* Now init our global bitmaps */
+ memset(fullbitmap_d->bitmap, 0xff, sizeof(fullbitmap_d->bitmap));
+
+ for (a = 0; a < 256; a++)
+ fullbitmap_c->tree[a] = fullbitmap_d;
+
+ for (a = 0; a < 256; a++)
+ fullbitmap_b->tree[a] = fullbitmap_c;
+ memset(fullbitmap_b->dirty, 0, sizeof(fullbitmap_b->dirty));
+
+ return 0;
+
+outbitmapb:
+ kmem_cache_free(cachep_b, fullbitmap_b);
+outbitmapc:
+ kmem_cache_free(cachep_c, fullbitmap_c);
+outbitmapd:
+ kmem_cache_free(cachep_d, fullbitmap_d);
+outd:
+ kmem_cache_destroy(cachep_d);
+outc:
+ kmem_cache_destroy(cachep_c);
+outb:
+ kmem_cache_destroy(cachep_b);
+out:
+
+ return ret;
+}
+
+static void __exit ip_set_iptreemap_fini(void)
+{
+ ip_set_unregister_set_type(&ip_set_iptreemap);
+ kmem_cache_free(cachep_d, fullbitmap_d);
+ kmem_cache_free(cachep_c, fullbitmap_c);
+ kmem_cache_free(cachep_b, fullbitmap_b);
+ kmem_cache_destroy(cachep_d);
+ kmem_cache_destroy(cachep_c);
+ kmem_cache_destroy(cachep_b);
+}
+
+module_init(ip_set_iptreemap_init);
+module_exit(ip_set_iptreemap_fini);
--- /dev/null
+++ b/net/ipv4/netfilter/ip_set_macipmap.c
@@ -0,0 +1,164 @@
+/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
+ * Patrick Schaaf <bof@bof.de>
+ * Martin Josefsson <gandalf@wlug.westbo.se>
+ * Copyright (C) 2003-2008 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.
+ */
+
+/* Kernel module implementing an IP set type: the macipmap type */
+
+#include <linux/module.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <linux/spinlock.h>
+#include <linux/if_ether.h>
+
+#include <linux/netfilter_ipv4/ip_set_macipmap.h>
+
+static int
+macipmap_utest(struct ip_set *set, const void *data, u_int32_t size,
+ ip_set_ip_t *hash_ip)
+{
+ const struct ip_set_macipmap *map = set->data;
+ const struct ip_set_macip *table = map->members;
+ const struct ip_set_req_macipmap *req = data;
+
+ if (req->ip < map->first_ip || req->ip > map->last_ip)
+ return -ERANGE;
+
+ *hash_ip = req->ip;
+ DP("set: %s, ip:%u.%u.%u.%u, %u.%u.%u.%u",
+ set->name, HIPQUAD(req->ip), HIPQUAD(*hash_ip));
+ if (table[req->ip - map->first_ip].match) {
+ return (memcmp(req->ethernet,
+ &table[req->ip - map->first_ip].ethernet,
+ ETH_ALEN) == 0);
+ } else {
+ return (map->flags & IPSET_MACIP_MATCHUNSET ? 1 : 0);
+ }
+}
+
+static int
+macipmap_ktest(struct ip_set *set,
+ const struct sk_buff *skb,
+ ip_set_ip_t *hash_ip,
+ const u_int32_t *flags,
+ unsigned char index)
+{
+ const struct ip_set_macipmap *map = set->data;
+ const struct ip_set_macip *table = map->members;
+ ip_set_ip_t ip;
+
+ ip = ipaddr(skb, flags[index]);
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return 0;
+
+ *hash_ip = ip;
+ DP("set: %s, ip:%u.%u.%u.%u, %u.%u.%u.%u",
+ set->name, HIPQUAD(ip), HIPQUAD(*hash_ip));
+ if (table[ip - map->first_ip].match) {
+ /* Is mac pointer valid?
+ * If so, compare... */
+ return (skb_mac_header(skb) >= skb->head
+ && (skb_mac_header(skb) + ETH_HLEN) <= skb->data
+ && (memcmp(eth_hdr(skb)->h_source,
+ &table[ip - map->first_ip].ethernet,
+ ETH_ALEN) == 0));
+ } else {
+ return (map->flags & IPSET_MACIP_MATCHUNSET ? 1 : 0);
+ }
+}
+
+/* returns 0 on success */
+static inline int
+macipmap_add(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, const unsigned char *ethernet)
+{
+ struct ip_set_macipmap *map = set->data;
+ struct ip_set_macip *table = map->members;
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+ if (table[ip - map->first_ip].match)
+ return -EEXIST;
+
+ *hash_ip = ip;
+ DP("%u.%u.%u.%u, %u.%u.%u.%u", HIPQUAD(ip), HIPQUAD(*hash_ip));
+ memcpy(&table[ip - map->first_ip].ethernet, ethernet, ETH_ALEN);
+ table[ip - map->first_ip].match = IPSET_MACIP_ISSET;
+ return 0;
+}
+
+#define KADT_CONDITION \
+ if (!(skb_mac_header(skb) >= skb->head \
+ && (skb_mac_header(skb) + ETH_HLEN) <= skb->data))\
+ return -EINVAL;
+
+UADT(macipmap, add, req->ethernet)
+KADT(macipmap, add, ipaddr, eth_hdr(skb)->h_source)
+
+static inline int
+macipmap_del(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ struct ip_set_macipmap *map = set->data;
+ struct ip_set_macip *table = map->members;
+
+ if (ip < map->first_ip || ip > map->last_ip)
+ return -ERANGE;
+ if (!table[ip - map->first_ip].match)
+ return -EEXIST;
+
+ *hash_ip = ip;
+ table[ip - map->first_ip].match = 0;
+ DP("%u.%u.%u.%u, %u.%u.%u.%u", HIPQUAD(ip), HIPQUAD(*hash_ip));
+ return 0;
+}
+
+#undef KADT_CONDITION
+#define KADT_CONDITION
+
+UADT(macipmap, del)
+KADT(macipmap, del, ipaddr)
+
+static inline int
+__macipmap_create(const struct ip_set_req_macipmap_create *req,
+ struct ip_set_macipmap *map)
+{
+ if (req->to - req->from > MAX_RANGE) {
+ ip_set_printk("range too big, %d elements (max %d)",
+ req->to - req->from + 1, MAX_RANGE+1);
+ return -ENOEXEC;
+ }
+ map->flags = req->flags;
+ return (req->to - req->from + 1) * sizeof(struct ip_set_macip);
+}
+
+BITMAP_CREATE(macipmap)
+BITMAP_DESTROY(macipmap)
+BITMAP_FLUSH(macipmap)
+
+static inline void
+__macipmap_list_header(const struct ip_set_macipmap *map,
+ struct ip_set_req_macipmap_create *header)
+{
+ header->flags = map->flags;
+}
+
+BITMAP_LIST_HEADER(macipmap)
+BITMAP_LIST_MEMBERS_SIZE(macipmap)
+BITMAP_LIST_MEMBERS(macipmap)
+
+IP_SET_TYPE(macipmap, IPSET_TYPE_IP | IPSET_DATA_SINGLE)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("macipmap type of IP sets");
+
+REGISTER_MODULE(macipmap)
--- /dev/null
+++ b/net/ipv4/netfilter/ip_set_nethash.c
@@ -0,0 +1,225 @@
+/* Copyright (C) 2003-2008 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.
+ */
+
+/* Kernel module implementing a cidr nethash set */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+#include <linux/netfilter_ipv4/ip_set_jhash.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <linux/spinlock.h>
+#include <linux/random.h>
+
+#include <net/ip.h>
+
+#include <linux/netfilter_ipv4/ip_set_nethash.h>
+
+static int limit = MAX_RANGE;
+
+static inline __u32
+nethash_id_cidr(const struct ip_set_nethash *map,
+ ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip,
+ uint8_t cidr)
+{
+ __u32 id;
+ u_int16_t i;
+ ip_set_ip_t *elem;
+
+ *hash_ip = pack_ip_cidr(ip, cidr);
+ if (!*hash_ip)
+ return MAX_RANGE;
+
+ for (i = 0; i < map->probes; i++) {
+ id = jhash_ip(map, i, *hash_ip) % map->hashsize;
+ DP("hash key: %u", id);
+ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id);
+ if (*elem == *hash_ip)
+ return id;
+ /* No shortcut - there can be deleted entries. */
+ }
+ return UINT_MAX;
+}
+
+static inline __u32
+nethash_id(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ const struct ip_set_nethash *map = set->data;
+ __u32 id = UINT_MAX;
+ int i;
+
+ for (i = 0; i < 30 && map->cidr[i]; i++) {
+ id = nethash_id_cidr(map, hash_ip, ip, map->cidr[i]);
+ if (id != UINT_MAX)
+ break;
+ }
+ return id;
+}
+
+static inline int
+nethash_test_cidr(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, uint8_t cidr)
+{
+ const struct ip_set_nethash *map = set->data;
+
+ return (nethash_id_cidr(map, hash_ip, ip, cidr) != UINT_MAX);
+}
+
+static inline int
+nethash_test(struct ip_set *set, ip_set_ip_t *hash_ip, ip_set_ip_t ip)
+{
+ return (nethash_id(set, hash_ip, ip) != UINT_MAX);
+}
+
+static int
+nethash_utest(struct ip_set *set, const void *data, u_int32_t size,
+ ip_set_ip_t *hash_ip)
+{
+ const struct ip_set_req_nethash *req = data;
+
+ if (req->cidr <= 0 || req->cidr > 32)
+ return -EINVAL;
+ return (req->cidr == 32 ? nethash_test(set, hash_ip, req->ip)
+ : nethash_test_cidr(set, hash_ip, req->ip, req->cidr));
+}
+
+#define KADT_CONDITION
+
+KADT(nethash, test, ipaddr)
+
+static inline int
+__nethash_add(struct ip_set_nethash *map, ip_set_ip_t *ip)
+{
+ __u32 probe;
+ u_int16_t i;
+ ip_set_ip_t *elem, *slot = NULL;
+
+ for (i = 0; i < map->probes; i++) {
+ probe = jhash_ip(map, i, *ip) % map->hashsize;
+ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, probe);
+ if (*elem == *ip)
+ return -EEXIST;
+ if (!(slot || *elem))
+ slot = elem;
+ /* There can be deleted entries, must check all slots */
+ }
+ if (slot) {
+ *slot = *ip;
+ map->elements++;
+ return 0;
+ }
+ /* Trigger rehashing */
+ return -EAGAIN;
+}
+
+static inline int
+nethash_add(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, uint8_t cidr)
+{
+ struct ip_set_nethash *map = set->data;
+ int ret;
+
+ if (map->elements >= limit || map->nets[cidr-1] == UINT16_MAX)
+ return -ERANGE;
+ if (cidr <= 0 || cidr >= 32)
+ return -EINVAL;
+
+ *hash_ip = pack_ip_cidr(ip, cidr);
+ DP("%u.%u.%u.%u/%u, %u.%u.%u.%u", HIPQUAD(ip), cidr, HIPQUAD(*hash_ip));
+ if (!*hash_ip)
+ return -ERANGE;
+
+ ret = __nethash_add(map, hash_ip);
+ if (ret == 0) {
+ if (!map->nets[cidr-1]++)
+ add_cidr_size(map->cidr, cidr);
+ map->elements++;
+ }
+
+ return ret;
+}
+
+#undef KADT_CONDITION
+#define KADT_CONDITION \
+ struct ip_set_nethash *map = set->data; \
+ uint8_t cidr = map->cidr[0] ? map->cidr[0] : 31;
+
+UADT(nethash, add, req->cidr)
+KADT(nethash, add, ipaddr, cidr)
+
+static inline void
+__nethash_retry(struct ip_set_nethash *tmp, struct ip_set_nethash *map)
+{
+ memcpy(tmp->cidr, map->cidr, sizeof(tmp->cidr));
+ memcpy(tmp->nets, map->nets, sizeof(tmp->nets));
+}
+
+HASH_RETRY(nethash, ip_set_ip_t)
+
+static inline int
+nethash_del(struct ip_set *set, ip_set_ip_t *hash_ip,
+ ip_set_ip_t ip, uint8_t cidr)
+{
+ struct ip_set_nethash *map = set->data;
+ ip_set_ip_t id, *elem;
+
+ if (cidr <= 0 || cidr >= 32)
+ return -EINVAL;
+
+ id = nethash_id_cidr(map, hash_ip, ip, cidr);
+ if (id == UINT_MAX)
+ return -EEXIST;
+
+ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id);
+ *elem = 0;
+ map->elements--;
+ if (!map->nets[cidr-1]--)
+ del_cidr_size(map->cidr, cidr);
+ return 0;
+}
+
+UADT(nethash, del, req->cidr)
+KADT(nethash, del, ipaddr, cidr)
+
+static inline int
+__nethash_create(const struct ip_set_req_nethash_create *req,
+ struct ip_set_nethash *map)
+{
+ memset(map->cidr, 0, sizeof(map->cidr));
+ memset(map->nets, 0, sizeof(map->nets));
+
+ return 0;
+}
+
+HASH_CREATE(nethash, ip_set_ip_t)
+HASH_DESTROY(nethash)
+
+HASH_FLUSH_CIDR(nethash, ip_set_ip_t)
+
+static inline void
+__nethash_list_header(const struct ip_set_nethash *map,
+ struct ip_set_req_nethash_create *header)
+{
+}
+
+HASH_LIST_HEADER(nethash)
+HASH_LIST_MEMBERS_SIZE(nethash, ip_set_ip_t)
+HASH_LIST_MEMBERS(nethash, ip_set_ip_t)
+
+IP_SET_RTYPE(nethash, IPSET_TYPE_IP | IPSET_DATA_SINGLE)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("nethash type of IP sets");
+module_param(limit, int, 0600);
+MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets");
+
+REGISTER_MODULE(nethash)
--- /dev/null
+++ b/net/ipv4/netfilter/ip_set_portmap.c
@@ -0,0 +1,114 @@
+/* Copyright (C) 2003-2008 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.
+ */
+
+/* Kernel module implementing a port set type as a bitmap */
+
+#include <linux/module.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <linux/spinlock.h>
+
+#include <net/ip.h>
+
+#include <linux/netfilter_ipv4/ip_set_portmap.h>
+#include <linux/netfilter_ipv4/ip_set_getport.h>
+
+static inline int
+portmap_test(const struct ip_set *set, ip_set_ip_t *hash_port,
+ ip_set_ip_t port)
+{
+ const struct ip_set_portmap *map = set->data;
+
+ if (port < map->first_ip || port > map->last_ip)
+ return -ERANGE;
+
+ *hash_port = port;
+ DP("set: %s, port:%u, %u", set->name, port, *hash_port);
+ return !!test_bit(port - map->first_ip, map->members);
+}
+
+#define KADT_CONDITION \
+ if (ip == INVALID_PORT) \
+ return 0;
+
+UADT(portmap, test)
+KADT(portmap, test, get_port)
+
+static inline int
+portmap_add(struct ip_set *set, ip_set_ip_t *hash_port, ip_set_ip_t port)
+{
+ struct ip_set_portmap *map = set->data;
+
+ if (port < map->first_ip || port > map->last_ip)
+ return -ERANGE;
+ if (test_and_set_bit(port - map->first_ip, map->members))
+ return -EEXIST;
+
+ *hash_port = port;
+ DP("port %u", port);
+ return 0;
+}
+
+UADT(portmap, add)
+KADT(portmap, add, get_port)
+
+static inline int
+portmap_del(struct ip_set *set, ip_set_ip_t *hash_port, ip_set_ip_t port)
+{
+ struct ip_set_portmap *map = set->data;
+
+ if (port < map->first_ip || port > map->last_ip)
+ return -ERANGE;
+ if (!test_and_clear_bit(port - map->first_ip, map->members))
+ return -EEXIST;
+
+ *hash_port = port;
+ DP("port %u", port);
+ return 0;
+}
+
+UADT(portmap, del)
+KADT(portmap, del, get_port)
+
+static inline int
+__portmap_create(const struct ip_set_req_portmap_create *req,
+ struct ip_set_portmap *map)
+{
+ if (req->to - req->from > MAX_RANGE) {
+ ip_set_printk("range too big, %d elements (max %d)",
+ req->to - req->from + 1, MAX_RANGE+1);
+ return -ENOEXEC;
+ }
+ return bitmap_bytes(req->from, req->to);
+}
+
+BITMAP_CREATE(portmap)
+BITMAP_DESTROY(portmap)
+BITMAP_FLUSH(portmap)
+
+static inline void
+__portmap_list_header(const struct ip_set_portmap *map,
+ struct ip_set_req_portmap_create *header)
+{
+}
+
+BITMAP_LIST_HEADER(portmap)
+BITMAP_LIST_MEMBERS_SIZE(portmap)
+BITMAP_LIST_MEMBERS(portmap)
+
+IP_SET_TYPE(portmap, IPSET_TYPE_PORT | IPSET_DATA_SINGLE)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("portmap type of IP sets");
+
+REGISTER_MODULE(portmap)
--- /dev/null
+++ b/net/ipv4/netfilter/ip_set_setlist.c
@@ -0,0 +1,330 @@
+/* Copyright (C) 2008 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.
+ */
+
+/* Kernel module implementing an IP set type: the setlist type */
+
+#include <linux/module.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+
+#include <linux/netfilter_ipv4/ip_set.h>
+#include <linux/netfilter_ipv4/ip_set_bitmaps.h>
+#include <linux/netfilter_ipv4/ip_set_setlist.h>
+
+/*
+ * before ==> index, ref
+ * after ==> ref, index
+ */
+
+static inline int
+next_index_eq(const struct ip_set_setlist *map, int i, ip_set_id_t index)
+{
+ return i < map->size && map->index[i] == index;
+}
+
+static int
+setlist_utest(struct ip_set *set, const void *data, u_int32_t size,
+ ip_set_ip_t *hash_ip)
+{
+ const struct ip_set_setlist *map = set->data;
+ const struct ip_set_req_setlist *req = data;
+ ip_set_id_t index, ref = IP_SET_INVALID_ID;
+ int i, res = 0;
+ struct ip_set *s;
+
+ if (req->before && req->ref[0] == '\0')
+ return 0;
+
+ index = __ip_set_get_byname(req->name, &s);
+ if (index == IP_SET_INVALID_ID)
+ return 0;
+ if (req->ref[0] != '\0') {
+ ref = __ip_set_get_byname(req->ref, &s);
+ if (ref == IP_SET_INVALID_ID)
+ goto finish;
+ }
+ for (i = 0; i < map->size
+ && map->index[i] != IP_SET_INVALID_ID; i++) {
+ if (req->before && map->index[i] == index) {
+ res = next_index_eq(map, i + 1, ref);
+ break;
+ } else if (!req->before) {
+ if ((ref == IP_SET_INVALID_ID
+ && map->index[i] == index)
+ || (map->index[i] == ref
+ && next_index_eq(map, i + 1, index))) {
+ res = 1;
+ break;
+ }
+ }
+ }
+ if (ref != IP_SET_INVALID_ID)
+ __ip_set_put_byindex(ref);
+finish:
+ __ip_set_put_byindex(index);
+ return res;
+}
+
+static int
+setlist_ktest(struct ip_set *set,
+ const struct sk_buff *skb,
+ ip_set_ip_t *hash_ip,
+ const u_int32_t *flags,
+ unsigned char index)
+{
+ struct ip_set_setlist *map = set->data;
+ int i, res = 0;
+
+ for (i = 0; i < map->size
+ && map->index[i] != IP_SET_INVALID_ID
+ && res == 0; i++)
+ res = ip_set_testip_kernel(map->index[i], skb, flags);
+ return res;
+}
+
+static inline int
+insert_setlist(struct ip_set_setlist *map, int i, ip_set_id_t index)
+{
+ ip_set_id_t tmp;
+ int j;
+
+ DP("i: %u, last %u\n", i, map->index[map->size - 1]);
+ if (i >= map->size || map->index[map->size - 1] != IP_SET_INVALID_ID)
+ return -ERANGE;
+
+ for (j = i; j < map->size
+ && index != IP_SET_INVALID_ID; j++) {
+ tmp = map->index[j];
+ map->index[j] = index;
+ index = tmp;
+ }
+ return 0;
+}
+
+static int
+setlist_uadd(struct ip_set *set, const void *data, u_int32_t size,
+ ip_set_ip_t *hash_ip)
+{
+ struct ip_set_setlist *map = set->data;
+ const struct ip_set_req_setlist *req = data;
+ ip_set_id_t index, ref = IP_SET_INVALID_ID;
+ int i, res = -ERANGE;
+ struct ip_set *s;
+
+ if (req->before && req->ref[0] == '\0')
+ return -EINVAL;
+
+ index = __ip_set_get_byname(req->name, &s);
+ if (index == IP_SET_INVALID_ID)
+ return -EEXIST;
+ /* "Loop detection" */
+ if (strcmp(s->type->typename, "setlist") == 0)
+ goto finish;
+
+ if (req->ref[0] != '\0') {
+ ref = __ip_set_get_byname(req->ref, &s);
+ if (ref == IP_SET_INVALID_ID) {
+ res = -EEXIST;
+ goto finish;
+ }
+ }
+ for (i = 0; i < map->size; i++) {
+ if (map->index[i] != ref)
+ continue;
+ if (req->before)
+ res = insert_setlist(map, i, index);
+ else
+ res = insert_setlist(map,
+ ref == IP_SET_INVALID_ID ? i : i + 1,
+ index);
+ break;
+ }
+ if (ref != IP_SET_INVALID_ID)
+ __ip_set_put_byindex(ref);
+ /* In case of success, we keep the reference to the set */
+finish:
+ if (res != 0)
+ __ip_set_put_byindex(index);
+ return res;
+}
+
+static int
+setlist_kadd(struct ip_set *set,
+ const struct sk_buff *skb,
+ ip_set_ip_t *hash_ip,
+ const u_int32_t *flags,
+ unsigned char index)
+{
+ struct ip_set_setlist *map = set->data;
+ int i, res = -EINVAL;
+
+ for (i = 0; i < map->size
+ && map->index[i] != IP_SET_INVALID_ID
+ && res != 0; i++)
+ res = ip_set_addip_kernel(map->index[i], skb, flags);
+ return res;
+}
+
+static inline int
+unshift_setlist(struct ip_set_setlist *map, int i)
+{
+ int j;
+
+ for (j = i; j < map->size - 1; j++)
+ map->index[j] = map->index[j+1];
+ map->index[map->size-1] = IP_SET_INVALID_ID;
+ return 0;
+}
+
+static int
+setlist_udel(struct ip_set *set, const void *data, u_int32_t size,
+ ip_set_ip_t *hash_ip)
+{
+ struct ip_set_setlist *map = set->data;
+ const struct ip_set_req_setlist *req = data;
+ ip_set_id_t index, ref = IP_SET_INVALID_ID;
+ int i, res = -EEXIST;
+ struct ip_set *s;
+
+ if (req->before && req->ref[0] == '\0')
+ return -EINVAL;
+
+ index = __ip_set_get_byname(req->name, &s);
+ if (index == IP_SET_INVALID_ID)
+ return -EEXIST;
+ if (req->ref[0] != '\0') {
+ ref = __ip_set_get_byname(req->ref, &s);
+ if (ref == IP_SET_INVALID_ID)
+ goto finish;
+ }
+ for (i = 0; i < map->size
+ && map->index[i] != IP_SET_INVALID_ID; i++) {
+ if (req->before) {
+ if (map->index[i] == index
+ && next_index_eq(map, i + 1, ref)) {
+ res = unshift_setlist(map, i);
+ break;
+ }
+ } else if (ref == IP_SET_INVALID_ID) {
+ if (map->index[i] == index) {
+ res = unshift_setlist(map, i);
+ break;
+ }
+ } else if (map->index[i] == ref
+ && next_index_eq(map, i + 1, index)) {
+ res = unshift_setlist(map, i + 1);
+ break;
+ }
+ }
+ if (ref != IP_SET_INVALID_ID)
+ __ip_set_put_byindex(ref);
+finish:
+ __ip_set_put_byindex(index);
+ /* In case of success, release the reference to the set */
+ if (res == 0)
+ __ip_set_put_byindex(index);
+ return res;
+}
+
+static int
+setlist_kdel(struct ip_set *set,
+ const struct sk_buff *skb,
+ ip_set_ip_t *hash_ip,
+ const u_int32_t *flags,
+ unsigned char index)
+{
+ struct ip_set_setlist *map = set->data;
+ int i, res = -EINVAL;
+
+ for (i = 0; i < map->size
+ && map->index[i] != IP_SET_INVALID_ID
+ && res != 0; i++)
+ res = ip_set_delip_kernel(map->index[i], skb, flags);
+ return res;
+}
+
+static int
+setlist_create(struct ip_set *set, const void *data, u_int32_t size)
+{
+ struct ip_set_setlist *map;
+ const struct ip_set_req_setlist_create *req = data;
+ int i;
+
+ map = kmalloc(sizeof(struct ip_set_setlist) +
+ req->size * sizeof(ip_set_id_t), GFP_KERNEL);
+ if (!map)
+ return -ENOMEM;
+ map->size = req->size;
+ for (i = 0; i < map->size; i++)
+ map->index[i] = IP_SET_INVALID_ID;
+
+ set->data = map;
+ return 0;
+}
+
+static void
+setlist_destroy(struct ip_set *set)
+{
+ struct ip_set_setlist *map = set->data;
+ int i;
+
+ for (i = 0; i < map->size
+ && map->index[i] != IP_SET_INVALID_ID; i++)
+ __ip_set_put_byindex(map->index[i]);
+
+ kfree(map);
+ set->data = NULL;
+}
+
+static void
+setlist_flush(struct ip_set *set)
+{
+ struct ip_set_setlist *map = set->data;
+ int i;
+
+ for (i = 0; i < map->size
+ && map->index[i] != IP_SET_INVALID_ID; i++) {
+ __ip_set_put_byindex(map->index[i]);
+ map->index[i] = IP_SET_INVALID_ID;
+ }
+}
+
+static void
+setlist_list_header(const struct ip_set *set, void *data)
+{
+ const struct ip_set_setlist *map = set->data;
+ struct ip_set_req_setlist_create *header = data;
+
+ header->size = map->size;
+}
+
+static int
+setlist_list_members_size(const struct ip_set *set)
+{
+ const struct ip_set_setlist *map = set->data;
+
+ return map->size * sizeof(ip_set_id_t);
+}
+
+static void
+setlist_list_members(const struct ip_set *set, void *data)
+{
+ struct ip_set_setlist *map = set->data;
+ int i;
+
+ for (i = 0; i < map->size; i++)
+ *((ip_set_id_t *)data + i) = ip_set_id(map->index[i]);
+}
+
+IP_SET_TYPE(setlist, IPSET_TYPE_SETNAME | IPSET_DATA_SINGLE)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("setlist type of IP sets");
+
+REGISTER_MODULE(setlist)
--- /dev/null
+++ b/net/ipv4/netfilter/ipt_set.c
@@ -0,0 +1,238 @@
+/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
+ * Patrick Schaaf <bof@bof.de>
+ * Martin Josefsson <gandalf@wlug.westbo.se>
+ * Copyright (C) 2003-2004 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.
+ */
+
+/* Kernel module to match an IP set. */
+
+#include <linux/module.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
+#include <linux/netfilter_ipv4/ip_tables.h>
+#define xt_register_match ipt_register_match
+#define xt_unregister_match ipt_unregister_match
+#define xt_match ipt_match
+#else
+#include <linux/netfilter/x_tables.h>
+#endif
+#include <linux/netfilter_ipv4/ip_set.h>
+#include <linux/netfilter_ipv4/ipt_set.h>
+
+static inline int
+match_set(const struct ipt_set_info *info,
+ const struct sk_buff *skb,
+ int inv)
+{
+ if (ip_set_testip_kernel(info->index, skb, info->flags))
+ inv = !inv;
+ return inv;
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+static int
+match(const struct sk_buff *skb,
+ const struct net_device *in,
+ const struct net_device *out,
+ const void *matchinfo,
+ int offset,
+ const void *hdr,
+ u_int16_t datalen,
+ int *hotdrop)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
+static int
+match(const struct sk_buff *skb,
+ const struct net_device *in,
+ const struct net_device *out,
+ const void *matchinfo,
+ int offset,
+ int *hotdrop)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+static int
+match(const struct sk_buff *skb,
+ const struct net_device *in,
+ const struct net_device *out,
+ const void *matchinfo,
+ int offset,
+ unsigned int protoff,
+ int *hotdrop)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
+static int
+match(const struct sk_buff *skb,
+ const struct net_device *in,
+ const struct net_device *out,
+ const struct xt_match *match,
+ const void *matchinfo,
+ int offset,
+ unsigned int protoff,
+ int *hotdrop)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+static bool
+match(const struct sk_buff *skb,
+ const struct net_device *in,
+ const struct net_device *out,
+ const struct xt_match *match,
+ const void *matchinfo,
+ int offset,
+ unsigned int protoff,
+ bool *hotdrop)
+#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28) */
+static bool
+match(const struct sk_buff *skb,
+ const struct xt_match_param *par)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+ const struct ipt_set_info_match *info = matchinfo;
+#else
+ const struct ipt_set_info_match *info = par->matchinfo;
+#endif
+
+ return match_set(&info->match_set,
+ skb,
+ info->match_set.flags[0] & IPSET_MATCH_INV);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
+static int
+checkentry(const char *tablename,
+ const struct ipt_ip *ip,
+ void *matchinfo,
+ unsigned int matchsize,
+ unsigned int hook_mask)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+static int
+checkentry(const char *tablename,
+ const void *inf,
+ void *matchinfo,
+ unsigned int matchsize,
+ unsigned int hook_mask)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+static int
+checkentry(const char *tablename,
+ const void *inf,
+ const struct xt_match *match,
+ void *matchinfo,
+ unsigned int matchsize,
+ unsigned int hook_mask)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
+static int
+checkentry(const char *tablename,
+ const void *inf,
+ const struct xt_match *match,
+ void *matchinfo,
+ unsigned int hook_mask)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+static bool
+checkentry(const char *tablename,
+ const void *inf,
+ const struct xt_match *match,
+ void *matchinfo,
+ unsigned int hook_mask)
+#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28) */
+static bool
+checkentry(const struct xt_mtchk_param *par)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+ struct ipt_set_info_match *info = matchinfo;
+#else
+ struct ipt_set_info_match *info = par->matchinfo;
+#endif
+ ip_set_id_t index;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+ if (matchsize != IPT_ALIGN(sizeof(struct ipt_set_info_match))) {
+ ip_set_printk("invalid matchsize %d", matchsize);
+ return 0;
+ }
+#endif
+
+ index = ip_set_get_byindex(info->match_set.index);
+
+ if (index == IP_SET_INVALID_ID) {
+ ip_set_printk("Cannot find set indentified by id %u to match",
+ info->match_set.index);
+ return 0; /* error */
+ }
+ if (info->match_set.flags[IP_SET_MAX_BINDINGS] != 0) {
+ ip_set_printk("That's nasty!");
+ return 0; /* error */
+ }
+
+ return 1;
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+static void destroy(void *matchinfo,
+ unsigned int matchsize)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+static void destroy(const struct xt_match *match,
+ void *matchinfo,
+ unsigned int matchsize)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+static void destroy(const struct xt_match *match,
+ void *matchinfo)
+#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28) */
+static void destroy(const struct xt_mtdtor_param *par)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+ struct ipt_set_info_match *info = matchinfo;
+#else
+ struct ipt_set_info_match *info = par->matchinfo;
+#endif
+
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+ if (matchsize != IPT_ALIGN(sizeof(struct ipt_set_info_match))) {
+ ip_set_printk("invalid matchsize %d", matchsize);
+ return;
+ }
+#endif
+ ip_set_put_byindex(info->match_set.index);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+static struct xt_match set_match = {
+ .name = "set",
+ .match = &match,
+ .checkentry = &checkentry,
+ .destroy = &destroy,
+ .me = THIS_MODULE
+};
+#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) */
+static struct xt_match set_match = {
+ .name = "set",
+ .family = AF_INET,
+ .match = &match,
+ .matchsize = sizeof(struct ipt_set_info_match),
+ .checkentry = &checkentry,
+ .destroy = &destroy,
+ .me = THIS_MODULE
+};
+#endif
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("iptables IP set match module");
+
+static int __init ipt_ipset_init(void)
+{
+ return xt_register_match(&set_match);
+}
+
+static void __exit ipt_ipset_fini(void)
+{
+ xt_unregister_match(&set_match);
+}
+
+module_init(ipt_ipset_init);
+module_exit(ipt_ipset_fini);
--- /dev/null
+++ b/net/ipv4/netfilter/ipt_SET.c
@@ -0,0 +1,242 @@
+/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
+ * Patrick Schaaf <bof@bof.de>
+ * Martin Josefsson <gandalf@wlug.westbo.se>
+ * Copyright (C) 2003-2004 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.
+ */
+
+/* ipt_SET.c - netfilter target to manipulate IP sets */
+
+#include <linux/module.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+#include <linux/version.h>
+
+#include <linux/netfilter_ipv4.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
+#include <linux/netfilter_ipv4/ip_tables.h>
+#define xt_register_target ipt_register_target
+#define xt_unregister_target ipt_unregister_target
+#define xt_target ipt_target
+#define XT_CONTINUE IPT_CONTINUE
+#else
+#include <linux/netfilter/x_tables.h>
+#endif
+#include <linux/netfilter_ipv4/ipt_set.h>
+
+static unsigned int
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+target(struct sk_buff **pskb,
+ unsigned int hooknum,
+ const struct net_device *in,
+ const struct net_device *out,
+ const void *targinfo,
+ void *userinfo)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+target(struct sk_buff **pskb,
+ const struct net_device *in,
+ const struct net_device *out,
+ unsigned int hooknum,
+ const void *targinfo,
+ void *userinfo)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+target(struct sk_buff **pskb,
+ const struct net_device *in,
+ const struct net_device *out,
+ unsigned int hooknum,
+ const struct xt_target *target,
+ const void *targinfo,
+ void *userinfo)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
+target(struct sk_buff **pskb,
+ const struct net_device *in,
+ const struct net_device *out,
+ unsigned int hooknum,
+ const struct xt_target *target,
+ const void *targinfo)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+target(struct sk_buff *skb,
+ const struct net_device *in,
+ const struct net_device *out,
+ unsigned int hooknum,
+ const struct xt_target *target,
+ const void *targinfo)
+#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28) */
+target(struct sk_buff *skb,
+ const struct xt_target_param *par)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+ const struct ipt_set_info_target *info = targinfo;
+#else
+ const struct ipt_set_info_target *info = par->targinfo;
+#endif
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
+ struct sk_buff *skb = *pskb;
+#endif
+
+
+ if (info->add_set.index != IP_SET_INVALID_ID)
+ ip_set_addip_kernel(info->add_set.index,
+ skb,
+ info->add_set.flags);
+ if (info->del_set.index != IP_SET_INVALID_ID)
+ ip_set_delip_kernel(info->del_set.index,
+ skb,
+ info->del_set.flags);
+
+ return XT_CONTINUE;
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
+static int
+checkentry(const char *tablename,
+ const struct ipt_entry *e,
+ void *targinfo,
+ unsigned int targinfosize,
+ unsigned int hook_mask)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+static int
+checkentry(const char *tablename,
+ const void *e,
+ void *targinfo,
+ unsigned int targinfosize,
+ unsigned int hook_mask)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+static int
+checkentry(const char *tablename,
+ const void *e,
+ const struct xt_target *target,
+ void *targinfo,
+ unsigned int targinfosize,
+ unsigned int hook_mask)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
+static int
+checkentry(const char *tablename,
+ const void *e,
+ const struct xt_target *target,
+ void *targinfo,
+ unsigned int hook_mask)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+static bool
+checkentry(const char *tablename,
+ const void *e,
+ const struct xt_target *target,
+ void *targinfo,
+ unsigned int hook_mask)
+#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28) */
+static bool
+checkentry(const struct xt_tgchk_param *par)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+ const struct ipt_set_info_target *info = targinfo;
+#else
+ const struct ipt_set_info_target *info = par->targinfo;
+#endif
+ ip_set_id_t index;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+ if (targinfosize != IPT_ALIGN(sizeof(*info))) {
+ DP("bad target info size %u", targinfosize);
+ return 0;
+ }
+#endif
+
+ if (info->add_set.index != IP_SET_INVALID_ID) {
+ index = ip_set_get_byindex(info->add_set.index);
+ if (index == IP_SET_INVALID_ID) {
+ ip_set_printk("cannot find add_set index %u as target",
+ info->add_set.index);
+ return 0; /* error */
+ }
+ }
+
+ if (info->del_set.index != IP_SET_INVALID_ID) {
+ index = ip_set_get_byindex(info->del_set.index);
+ if (index == IP_SET_INVALID_ID) {
+ ip_set_printk("cannot find del_set index %u as target",
+ info->del_set.index);
+ return 0; /* error */
+ }
+ }
+ if (info->add_set.flags[IP_SET_MAX_BINDINGS] != 0
+ || info->del_set.flags[IP_SET_MAX_BINDINGS] != 0) {
+ ip_set_printk("That's nasty!");
+ return 0; /* error */
+ }
+
+ return 1;
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+static void destroy(void *targetinfo,
+ unsigned int targetsize)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+static void destroy(const struct xt_target *target,
+ void *targetinfo,
+ unsigned int targetsize)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+static void destroy(const struct xt_target *target,
+ void *targetinfo)
+#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28) */
+static void destroy(const struct xt_tgdtor_param *par)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+ const struct ipt_set_info_target *info = targetinfo;
+#else
+ const struct ipt_set_info_target *info = par->targinfo;
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+ if (targetsize != IPT_ALIGN(sizeof(struct ipt_set_info_target))) {
+ ip_set_printk("invalid targetsize %d", targetsize);
+ return;
+ }
+#endif
+ if (info->add_set.index != IP_SET_INVALID_ID)
+ ip_set_put_byindex(info->add_set.index);
+ if (info->del_set.index != IP_SET_INVALID_ID)
+ ip_set_put_byindex(info->del_set.index);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+static struct xt_target SET_target = {
+ .name = "SET",
+ .target = target,
+ .checkentry = checkentry,
+ .destroy = destroy,
+ .me = THIS_MODULE
+};
+#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) */
+static struct xt_target SET_target = {
+ .name = "SET",
+ .family = AF_INET,
+ .target = target,
+ .targetsize = sizeof(struct ipt_set_info_target),
+ .checkentry = checkentry,
+ .destroy = destroy,
+ .me = THIS_MODULE
+};
+#endif
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("iptables IP set target module");
+
+static int __init ipt_SET_init(void)
+{
+ return xt_register_target(&SET_target);
+}
+
+static void __exit ipt_SET_fini(void)
+{
+ xt_unregister_target(&SET_target);
+}
+
+module_init(ipt_SET_init);
+module_exit(ipt_SET_fini);
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -379,5 +379,146 @@ config IP_NF_ARP_MANGLE
Allows altering the ARP packet payload: source and destination
hardware and network addresses.
+config IP_NF_SET
+ tristate "IP set support"
+ depends on INET && NETFILTER
+ help
+ This option adds IP set support to the kernel.
+ In order to define and use sets, you need the userspace utility
+ ipset(8).
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_SET_MAX
+ int "Maximum number of IP sets"
+ default 256
+ range 2 65534
+ depends on IP_NF_SET
+ help
+ You can define here default value of the maximum number
+ of IP sets for the kernel.
+
+ The value can be overriden by the 'max_sets' module
+ parameter of the 'ip_set' module.
+
+config IP_NF_SET_HASHSIZE
+ int "Hash size for bindings of IP sets"
+ default 1024
+ depends on IP_NF_SET
+ help
+ You can define here default value of the hash size for
+ bindings of IP sets.
+
+ The value can be overriden by the 'hash_size' module
+ parameter of the 'ip_set' module.
+
+config IP_NF_SET_IPMAP
+ tristate "ipmap set support"
+ depends on IP_NF_SET
+ help
+ This option adds the ipmap set type support.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_SET_MACIPMAP
+ tristate "macipmap set support"
+ depends on IP_NF_SET
+ help
+ This option adds the macipmap set type support.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_SET_PORTMAP
+ tristate "portmap set support"
+ depends on IP_NF_SET
+ help
+ This option adds the portmap set type support.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_SET_IPHASH
+ tristate "iphash set support"
+ depends on IP_NF_SET
+ help
+ This option adds the iphash set type support.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_SET_NETHASH
+ tristate "nethash set support"
+ depends on IP_NF_SET
+ help
+ This option adds the nethash set type support.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_SET_IPPORTHASH
+ tristate "ipporthash set support"
+ depends on IP_NF_SET
+ help
+ This option adds the ipporthash set type support.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_SET_IPPORTIPHASH
+ tristate "ipportiphash set support"
+ depends on IP_NF_SET
+ help
+ This option adds the ipportiphash set type support.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_SET_IPPORTNETHASH
+ tristate "ipportnethash set support"
+ depends on IP_NF_SET
+ help
+ This option adds the ipportnethash set type support.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_SET_IPTREE
+ tristate "iptree set support"
+ depends on IP_NF_SET
+ help
+ This option adds the iptree set type support.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_SET_IPTREEMAP
+ tristate "iptreemap set support"
+ depends on IP_NF_SET
+ help
+ This option adds the iptreemap set type support.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_SET_SETLIST
+ tristate "setlist set support"
+ depends on IP_NF_SET
+ help
+ This option adds the setlist set type support.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_MATCH_SET
+ tristate "set match support"
+ depends on IP_NF_SET
+ help
+ Set matching matches against given IP sets.
+ You need the ipset utility to create and set up the sets.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_TARGET_SET
+ tristate "SET target support"
+ depends on IP_NF_SET
+ help
+ The SET target makes possible to add/delete entries
+ in IP sets.
+ You need the ipset utility to create and set up the sets.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+
endmenu
--- a/net/ipv4/netfilter/Makefile
+++ b/net/ipv4/netfilter/Makefile
@@ -46,6 +46,7 @@ obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o
obj-$(CONFIG_IP_NF_MATCH_ECN) += ipt_ecn.o
obj-$(CONFIG_IP_NF_MATCH_RECENT) += ipt_recent.o
obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o
+obj-$(CONFIG_IP_NF_MATCH_SET) += ipt_set.o
# targets
obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
@@ -57,6 +58,21 @@ obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += i
obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
obj-$(CONFIG_IP_NF_TARGET_TTL) += ipt_TTL.o
obj-$(CONFIG_IP_NF_TARGET_ULOG) += ipt_ULOG.o
+obj-$(CONFIG_IP_NF_TARGET_SET) += ipt_SET.o
+
+# sets
+obj-$(CONFIG_IP_NF_SET) += ip_set.o
+obj-$(CONFIG_IP_NF_SET_IPMAP) += ip_set_ipmap.o
+obj-$(CONFIG_IP_NF_SET_PORTMAP) += ip_set_portmap.o
+obj-$(CONFIG_IP_NF_SET_MACIPMAP) += ip_set_macipmap.o
+obj-$(CONFIG_IP_NF_SET_IPHASH) += ip_set_iphash.o
+obj-$(CONFIG_IP_NF_SET_NETHASH) += ip_set_nethash.o
+obj-$(CONFIG_IP_NF_SET_IPPORTHASH) += ip_set_ipporthash.o
+obj-$(CONFIG_IP_NF_SET_IPPORTIPHASH) += ip_set_ipportiphash.o
+obj-$(CONFIG_IP_NF_SET_IPPORTNETHASH) += ip_set_ipportnethash.o
+obj-$(CONFIG_IP_NF_SET_IPTREE) += ip_set_iptree.o
+obj-$(CONFIG_IP_NF_SET_IPTREEMAP) += ip_set_iptreemap.o
+obj-$(CONFIG_IP_NF_SET_SETLIST) += ip_set_setlist.o
# generic ARP tables
obj-$(CONFIG_IP_NF_ARPTABLES) += arp_tables.o
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