diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nf_set.h linux-2.6.15.3-nfset/include/linux/netfilter/nf_set.h --- linux-2.6.15.3-orig/include/linux/netfilter/nf_set.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nf_set.h 2006-03-13 19:35:38.000000000 +0100 @@ -0,0 +1,316 @@ +#ifndef __NF_SET_H +#define __NF_SET_H + +/* Copyright (C) 2000-2002 Joakim Axelsson + * Patrick Schaaf + * Martin Josefsson + * Copyright (C) 2003-2004 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#if 1 +#define NF_SET_DEBUG +#endif + +/* 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 nf_set_ip_t; + +/* Sets are identified by an id in kernel space. Tweak with nf_set_id_t + * and NF_SET_INVALID_ID if you want to increase the max number of sets. + */ +typedef uint16_t nf_set_id_t; + +#define NF_SET_INVALID_ID 65535 + +#define NF_SET_MAXNAMELEN 32 /* set names and set typenames */ + +/* Core protocol version */ +#define NF_SET_PROTOCOL_VERSION 1 + +/* + * Option flags for kernel operations (ipt[6]_set_info) + */ +#define NFSET_SRC 0x01 /* Source match/add */ +#define NFSET_DST 0x02 /* Destination match/add */ +#define NFSET_MATCH_INV 0x04 /* Inverse matching */ + +/* Option flags for userspace operations */ +#define NFSET_IGNORE_ERRORS 0x01 /* Ignore errors at add/del */ + +/* + * Set features + */ +#define NFSET_TYPE_IP 0x01 /* IP address type of set */ +#define NFSET_TYPE_IPV4 0x01 /* IP address type of set */ +#define NFSET_TYPE_IPV6 0x02 /* IPv6 address type of set */ +#define NFSET_TYPE_PORT 0x04 /* Port type of set */ +#define NFSET_TYPE_SINGLE 0x08 /* Single data storage */ +#define NFSET_TYPE_DOUBLE 0x10 /* Double data storage */ + +#define NF_SET_MAX_STORAGE 2 /* Double data storage */ + +/* Often used routine in bitmap type of sets */ +static inline int bitmap_bytes(nf_set_ip_t a, nf_set_ip_t b) +{ + return 4 * ((((b - a + 8) / 8) + 3) / 4); +} + +#ifdef __KERNEL__ +#define nf_set_printk(format, args...) \ + do { \ + printk("%s: %s: ", __FILE__, __FUNCTION__); \ + printk(format "\n" , ## args); \ + } while (0) + +#if defined(NF_SET_DEBUG) +#define DP(format, args...) \ + do { \ + printk("%s: %s (DBG): ", __FILE__, __FUNCTION__);\ + printk(format "\n" , ## args); \ + } while (0) +#define NF_SET_ASSERT(x) \ + do { \ + if (!(x)) \ + printk("NF_SET_ASSERT: %s:%i(%s)\n", \ + __FILE__, __LINE__, __FUNCTION__); \ + } while (0) +#else +#define DP(format, args...) +#define NF_SET_ASSERT(x) +#endif + +/* + * Unified set header data + */ +struct nfset_l2proto { + unsigned char ethernet[ETH_ALEN]; +}; + +#define NFSET_FLAG_L2_ETHER 0x00000001 +#define NFSET_FLAG_L2 0x000000ff + +struct nfset_l3proto { + union { + __u32 ipv4; + __u32 ipv6[4]; + } from; + union { + __u32 ipv4; + __u32 ipv6[4]; + } to; + __u32 mask; + __u16 protonum; +}; + +#define NFSET_FLAG_L3_FROM 0x00000100 +#define NFSET_FLAG_L3_TO 0x00000200 +#define NFSET_FLAG_L3_MASK 0x00000400 +#define NFSET_FLAG_L3_PROTONUM 0x00000800 +#define NFSET_FLAG_L3 0x0000ff00 + +struct nfset_l4proto { + __u16 from; + __u16 to; +}; + +#define NFSET_FLAG_L4_FROM 0x00010000 +#define NFSET_FLAG_L4_TO 0x00020000 +#define NFSET_FLAG_L4 0x00ff0000 + +struct nfset_genproto { + __u32 size; + __u32 limit; + __u32 timeout; + __u32 flags; +}; + +#define NFSET_FLAG_GEN_SIZE 0x01000000 +#define NFSET_FLAG_GEN_LIMIT 0x02000000 +#define NFSET_FLAG_GEN_TIMEOUT 0x04000000 +#define NFSET_FLAG_GEN_FLAGS 0x08000000 +#define NFSET_FLAG_GEN 0xff000000 + +struct nfset_proto { + __u32 flags; + struct nfset_l2proto l2; + struct nfset_l3proto l3; + struct nfset_l4proto l4; + struct nfset_genproto gen; +}; + +/* + * The nf_set_subtype definition - there can be more per set type. + * + * Each individual set has a pointer, set->subtype, 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 nf_set; + +struct nf_set_subtype { + /* test for IP in set (kernel: iptables -m set src|dst) + * return 0 if not in set, 1 if in set. + */ + int (*test_kernel) (struct nf_set *set, + const struct sk_buff * skb, + const u_int32_t *flags); + + /* test for IP in set (userspace: nfset -T set IP) + * return 0 if not in set, 1 if in set. + */ + int (*test) (struct nf_set *set, + const void *data, size_t size, + const u_int32_t flags); + + /* Add IP into set (userspace: nfset -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 (*add) (struct nf_set *set, + const void *data, size_t size, + const u_int32_t flags); + + /* 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 (*add_kernel) (struct nf_set *set, + const struct sk_buff * skb, + const u_int32_t *flags); + + /* remove IP from set (userspace: nfset -D set 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 (*del) (struct nf_set *set, + const void *data, size_t size, + const u_int32_t flags); + + /* remove IP from set (kernel: iptables ... -j SET set src) + * 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 (*del_kernel) (struct nf_set *set, + const struct sk_buff * skb, + const u_int32_t *flags); + + /* new set creation - allocated type specific items + */ + int (*create) (struct nf_set *set, + const struct nfset_proto *proto); + + /* set destruction - free type specific items + * There is no return value. + * Can be called only when child sets are destroyed. + */ + void (*destroy) (struct nf_set *set); + + /* set flushing - reset all bits in the set, or something similar. + * There is no return value. + */ + void (*flush) (struct nf_set *set); + + /* 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 nf_set *set, + struct nfset_proto *data); + + /* 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. + */ + int (*list_members) (const struct nf_set *set, + void *buffer, int buflen, + long args[5]); + + /* Subtype creation flags */ + __u32 flags; +}; + +struct nf_set_type { + struct list_head list; /* next in list of set types */ + + char typename[NF_SET_MAXNAMELEN]; /* Type name */ + unsigned int protocol_version; /* Core protocol version */ + unsigned char features; /* NFSET_TYPE_* features */ + unsigned int subtype_base; /* Base index of subtypes */ + unsigned int subtype_next; /* Next unused subtype index */ + struct module *me; /* module pointer */ + + struct nf_set_subtype subtypes[1]; /* The subtypes or versions */ +}; + +/* A generic nfset */ +struct nf_set { + char name[NF_SET_MAXNAMELEN]; /* the name of the set */ + rwlock_t lock; /* lock for concurrency control */ + nf_set_id_t id; /* set id for swapping */ + atomic_t ref; /* in kernel references */ + struct nf_set_type *type; /* the set type */ + struct nf_set_subtype *subtype; /* the set subtype */ + void *data; /* set subtype specific data */ +}; + +/* set type management */ +extern int nf_set_register_set_type(struct nf_set_type *set_type); +extern void nf_set_unregister_set_type(struct nf_set_type *set_type); + +/* get and put sets */ +extern nf_set_id_t nf_set_get_byname(const char name[NF_SET_MAXNAMELEN]); +extern void nf_set_put_byindex(nf_set_id_t id); + +/* slab cache management */ +extern int nf_set_cache_create(size_t size, unsigned int *id); +extern void nf_set_cache_destroy(unsigned int id); +extern void * nf_set_cache_alloc(unsigned int id, gfp_t flags); +extern void nf_set_cache_free(unsigned int id, void *data); + +/* API for ip[6]tables set match, and SET target */ +extern void nf_set_add_kernel(nf_set_id_t index, + const struct sk_buff *skb, + const u_int32_t *flags); +extern void nf_set_del_kernel(nf_set_id_t index, + const struct sk_buff *skb, + const u_int32_t *flags); +extern int nf_set_test_kernel(nf_set_id_t index, + const struct sk_buff *skb, + const u_int32_t *flags); + +#endif /* __KERNEL__ */ + +#endif /*__NF_SET_H*/ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nf_set_iphash.h linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_iphash.h --- linux-2.6.15.3-orig/include/linux/netfilter/nf_set_iphash.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_iphash.h 2006-03-09 16:12:23.000000000 +0100 @@ -0,0 +1,15 @@ +#ifndef __NF_SET_IPHASH_H +#define __NF_SET_IPHASH_H + +#include +#include + +#define SETTYPE_NAME "iphash" +#define MAX_RANGE 0x0000FFFF + +struct nf_set_iphash { + nf_set_ip_t netmask; /* netmask */ + struct __nf_set_iphash map; /* common iphash type of map */ +}; + +#endif /* __NF_SET_IPHASH_H */ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nf_set_iphash_common.h linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_iphash_common.h --- linux-2.6.15.3-orig/include/linux/netfilter/nf_set_iphash_common.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_iphash_common.h 2006-03-13 19:23:29.000000000 +0100 @@ -0,0 +1,223 @@ +#ifndef __NF_SET_IPHASH_COMMON_H +#define __NF_SET_IPHASH_COMMON_H + +#include + +#if BITS_PER_LONG < 64 +#define IPHASH_LEN 3 +#else +#define IPHASH_LEN 4 +#endif + +struct iphash { + struct iphash *next; + nf_set_ip_t ip[IPHASH_LEN]; +}; + +struct __nf_set_iphash { + uint32_t hashsize; /* hash size */ + uint32_t limit; /* max number of IP addresses */ + uint32_t count; /* current number of IP addresses */ + uint32_t initval; /* initval for jhash_1word */ + struct iphash *members[0]; /* the iphash proper */ +}; + +#ifdef __KERNEL__ +static inline int +__iphash_testip(struct __nf_set_iphash *map, nf_set_ip_t ip) +{ + struct iphash *elem; + __u32 id; + int i; + + id = jhash_1word(ip, map->initval) % map->hashsize; + DP("hash key: %u", id); + elem = map->members[id]; + while (elem) { + DP("try bucket %p", elem); + for (i = 0; i < IPHASH_LEN; i++) + if (elem->ip[i] == ip) { + DP("found at %u", i); + return 1; + } + elem = elem->next; + } + return 0; +} + +static inline struct iphash * +__iphash_iphash_alloc(unsigned int cache_id) +{ + struct iphash *elem = (struct iphash *) + nf_set_cache_alloc(cache_id, GFP_ATOMIC); + + if (elem) + memset(elem, 0, sizeof(struct iphash)); + + return elem; +} + +static inline int +__iphash_addip(unsigned int cache_id, + struct __nf_set_iphash *map, nf_set_ip_t ip) +{ + struct iphash *elem; + __u32 id; + int i; + + if (map->count >= map->limit) + return -EOVERFLOW; + + id = jhash_1word(ip, map->initval) % map->hashsize; + DP("hash key: %u", id); + if (!map->members[id]) { + map->members[id] = __iphash_iphash_alloc(cache_id); + if (!map->members[id]) + return -ENOMEM; + DP("create bucket %u (%p)", id, map->members[id]); + } + elem = map->members[id]; + while (1) { + for (i = 0; i < IPHASH_LEN; i++) { + if (elem->ip[i] == ip) + return -EEXIST; + if (!elem->ip[i]) { + elem->ip[i] = ip; + map->count++; + return 0; + } + } + if (!elem->next) { + elem->next = __iphash_iphash_alloc(cache_id); + if (!elem->next) + return -ENOMEM; + DP("create elem %p", elem->next); + } + elem = elem->next; + } + return 0; +} + +static inline struct iphash * +find_last(struct iphash *elem, int *i) +{ + struct iphash *prev; + + if (!elem->next) + return NULL; + + while (elem->next) { + prev = elem; + elem = elem->next; + } + + for (*i = IPHASH_LEN - 1; *i >= 0; (*i)--) { + if (elem->ip[*i]) + return prev; + } + BUG(); + return NULL; +} + +static inline int +__iphash_delip(unsigned int cache_id, + struct __nf_set_iphash *map, nf_set_ip_t ip) +{ + struct iphash *elem, *prev, *pprev; + __u32 id; + int i, j; + + id = jhash_1word(ip, map->initval) % map->hashsize; + DP("hash key: %u", id); + prev = elem = map->members[id]; + while (elem) { + for (i = 0; i < IPHASH_LEN; i++) { + if (elem->ip[i] == ip) { + DP("found at %u", i); + map->count--; + pprev = find_last(elem, &j); + if (pprev) { + DP("found prev %p", pprev); + elem->ip[i] = pprev->next->ip[j]; + pprev->next->ip[j] = 0; + prev = pprev; + elem = prev->next; + } else + elem->ip[i] = 0; + + for (j = 0, i = 0; i < IPHASH_LEN; i++) + if (!elem->ip[i]) + j++; + if (j == IPHASH_LEN) { + DP("freeing %p", elem); + if (elem == map->members[id]) + map->members[id] = NULL; + else + prev->next = NULL; + + nf_set_cache_free(cache_id, elem); + } + return 0; + } + } + prev = elem; + elem = elem->next; + } + return -EEXIST; +} + +static inline void +__iphash_destroy(unsigned int cache_id, struct __nf_set_iphash *map) +{ + struct iphash *elem, *tmp; + uint32_t i; + + for (i = 0; i < map->hashsize; i++) { + elem = map->members[i]; + while (elem) { + tmp = elem->next; + nf_set_cache_free(cache_id, elem); + elem = tmp; + } + } +} + +static inline void +__iphash_flush(unsigned int cache_id, struct __nf_set_iphash *map) +{ + struct iphash *elem, *tmp; + uint32_t i; + + for (i = 0; i < map->hashsize; i++) { + elem = map->members[i]; + while (elem) { + tmp = elem->next; + nf_set_cache_free(cache_id, elem); + elem = tmp; + } + map->members[i] = NULL; + } + map->count = 0; +} + +static inline void +__iphash_list_members(const struct __nf_set_iphash *map, void *data) +{ + struct iphash *elem; + nf_set_ip_t i, k; + int j; + + k = 0; + for (i = 0; i < map->hashsize; i++) { + elem = map->members[i]; + while (elem) { + for (j = 0; j < IPHASH_LEN; j++) + if (elem->ip[j]) + ((nf_set_ip_t *)data)[k++] = + elem->ip[j]; + elem = elem->next; + } + } +} +#endif /* __KERNEL__ */ +#endif /* __NF_SET_IPHASH_COMMON_H */ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nf_set_ipmap.h linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_ipmap.h --- linux-2.6.15.3-orig/include/linux/netfilter/nf_set_ipmap.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_ipmap.h 2006-03-08 23:23:50.000000000 +0100 @@ -0,0 +1,56 @@ +#ifndef __NF_SET_IPMAP_H +#define __NF_SET_IPMAP_H + +#include + +#define SETTYPE_NAME "ipmap" +#define MAX_RANGE 0x0000FFFF + +struct nf_set_ipmap { + void *members; /* the ipmap proper */ + nf_set_ip_t first_ip; /* host byte order, included in range */ + nf_set_ip_t last_ip; /* host byte order, included in range */ + nf_set_ip_t netmask; /* subnet netmask */ + nf_set_ip_t sizeid; /* size of set in IPs */ + nf_set_ip_t hosts; /* number of hosts in a subnet */ +}; + +struct nf_set_req_ipmap_create { + nf_set_ip_t from; + nf_set_ip_t to; + nf_set_ip_t netmask; +}; + +struct nf_set_req_ipmap { + nf_set_ip_t ip; +}; + +unsigned int +mask_to_bits(nf_set_ip_t mask) +{ + unsigned int bits = 32; + nf_set_ip_t maskaddr; + + if (mask == 0xFFFFFFFF) + return bits; + + maskaddr = 0xFFFFFFFE; + while (--bits >= 0 && maskaddr != mask) + maskaddr <<= 1; + + return bits; +} + +nf_set_ip_t +range_to_mask(nf_set_ip_t from, nf_set_ip_t to, unsigned int *bits) +{ + nf_set_ip_t mask = 0xFFFFFFFE; + + *bits = 32; + while (--(*bits) >= 0 && mask && (to & mask) != from) + mask <<= 1; + + return mask; +} + +#endif /* __NF_SET_IPMAP_H */ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nf_set_ipporthash.h linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_ipporthash.h --- linux-2.6.15.3-orig/include/linux/netfilter/nf_set_ipporthash.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_ipporthash.h 2006-03-08 23:24:12.000000000 +0100 @@ -0,0 +1,29 @@ +#ifndef __NF_SET_IPPORTHASH_H +#define __NF_SET_IPPORTHASH_H + +#include +#include + +#define SETTYPE_NAME "ipporthash" +#define MAX_RANGE 0x0000FFFF +#define INVALID_PORT (MAX_RANGE + 1) + +struct nf_set_ipporthash { + nf_set_ip_t first_ip; /* host byte order, included in range */ + nf_set_ip_t last_ip; /* host byte order, included in range */ + struct __nf_set_iphash map; /* common iphash type of map */ +}; + +struct nf_set_req_ipporthash_create { + uint32_t hashsize; + uint32_t limit; + nf_set_ip_t from; + nf_set_ip_t to; +}; + +struct nf_set_req_ipporthash { + nf_set_ip_t ip; + nf_set_ip_t port; +}; + +#endif /* __NF_SET_IPPORTHASH_H */ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nf_set_iptree.h linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_iptree.h --- linux-2.6.15.3-orig/include/linux/netfilter/nf_set_iptree.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_iptree.h 2006-03-08 23:24:51.000000000 +0100 @@ -0,0 +1,42 @@ +#ifndef __NF_SET_IPTREE_H +#define __NF_SET_IPTREE_H + +#include + +#define SETTYPE_NAME "iptree" +#define MAX_RANGE 0x0000FFFF + +struct nf_set_iptreed { + unsigned long expires[256]; /* x.x.x.ADDR */ +}; + +struct nf_set_iptreec { + struct nf_set_iptreed *tree[256]; /* x.x.ADDR.* */ +}; + +struct nf_set_iptreeb { + struct nf_set_iptreec *tree[256]; /* x.ADDR.*.* */ +}; + +struct nf_set_iptree { + uint32_t limit; /* max number of IP addresses */ + uint32_t count; /* current number of IP addresses */ + unsigned int timeout; + unsigned int gc_interval; +#ifdef __KERNEL__ + struct timer_list gc; + struct nf_set_iptreeb *tree[256]; /* ADDR.*.*.* */ +#endif +}; + +struct nf_set_req_iptree_create { + nf_set_ip_t limit; + unsigned int timeout; +}; + +struct nf_set_req_iptree { + nf_set_ip_t ip; + unsigned int timeout; +}; + +#endif /* __NF_SET_IPTREE_H */ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nf_set_jhash.h linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_jhash.h --- linux-2.6.15.3-orig/include/linux/netfilter/nf_set_jhash.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_jhash.h 2006-03-08 17:02:59.000000000 +0100 @@ -0,0 +1,148 @@ +#ifndef _NF_SET_JHASH_H +#define _NF_SET_JHASH_H + +/* This is a copy of linux/jhash.h but the types u32/u8 are changed + * to __u32/__u8 so that the header file can be included into + * userspace code as well. Jozsef Kadlecsik (kadlec@blackhole.kfki.hu) + */ + +/* jhash.h: Jenkins hash support. + * + * Copyright (C) 1996 Bob Jenkins (bob_jenkins@burtleburtle.net) + * + * http://burtleburtle.net/bob/hash/ + * + * These are the credits from Bob's sources: + * + * lookup2.c, by Bob Jenkins, December 1996, Public Domain. + * hash(), hash2(), hash3, and mix() 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 has no warranty. + * + * Copyright (C) 2003 David S. Miller (davem@redhat.com) + * + * I've modified Bob's hash to be useful in the Linux kernel, and + * any bugs present are surely my fault. -DaveM + */ + +/* NOTE: Arguments are modified. */ +#define __jhash_mix(a, b, c) \ +{ \ + a -= b; a -= c; a ^= (c>>13); \ + b -= c; b -= a; b ^= (a<<8); \ + c -= a; c -= b; c ^= (b>>13); \ + a -= b; a -= c; a ^= (c>>12); \ + b -= c; b -= a; b ^= (a<<16); \ + c -= a; c -= b; c ^= (b>>5); \ + a -= b; a -= c; a ^= (c>>3); \ + b -= c; b -= a; b ^= (a<<10); \ + c -= a; c -= b; c ^= (b>>15); \ +} + +/* The golden ration: an arbitrary value */ +#define JHASH_GOLDEN_RATIO 0x9e3779b9 + +/* The most generic version, hashes an arbitrary sequence + * of bytes. No alignment or length assumptions are made about + * the input key. + */ +static inline __u32 jhash(void *key, __u32 length, __u32 initval) +{ + __u32 a, b, c, len; + __u8 *k = key; + + len = length; + a = b = JHASH_GOLDEN_RATIO; + c = initval; + + while (len >= 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); + + k += 12; + len -= 12; + } + + c += length; + switch (len) { + case 11: c += ((__u32)k[10]<<24); + case 10: c += ((__u32)k[9]<<16); + case 9 : c += ((__u32)k[8]<<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_mix(a,b,c); + + 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(__u32 *k, __u32 length, __u32 initval) +{ + __u32 a, b, c, len; + + a = b = JHASH_GOLDEN_RATIO; + c = initval; + len = length; + + while (len >= 3) { + a += k[0]; + b += k[1]; + c += k[2]; + __jhash_mix(a, b, c); + k += 3; len -= 3; + } + + c += length * 4; + + switch (len) { + case 2 : b += k[1]; + case 1 : a += k[0]; + }; + + __jhash_mix(a,b,c); + + return c; +} + + +/* A special ultra-optimized versions that knows they are hashing exactly + * 3, 2 or 1 word(s). + * + * NOTE: In partilar the "c += length; __jhash_mix(a,b,c);" normally + * done at the end is not done here. + */ +static inline __u32 jhash_3words(__u32 a, __u32 b, __u32 c, __u32 initval) +{ + a += JHASH_GOLDEN_RATIO; + b += JHASH_GOLDEN_RATIO; + c += initval; + + __jhash_mix(a, b, c); + + return c; +} + +static inline __u32 jhash_2words(__u32 a, __u32 b, __u32 initval) +{ + return jhash_3words(a, b, 0, initval); +} + +static inline __u32 jhash_1word(__u32 a, __u32 initval) +{ + return jhash_3words(a, 0, 0, initval); +} + +#endif /* _NF_SET_JHASH_H */ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nf_set_macipmap.h linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_macipmap.h --- linux-2.6.15.3-orig/include/linux/netfilter/nf_set_macipmap.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_macipmap.h 2006-03-08 23:25:22.000000000 +0100 @@ -0,0 +1,38 @@ +#ifndef __NF_SET_MACIPMAP_H +#define __NF_SET_MACIPMAP_H + +#include + +#define SETTYPE_NAME "macipmap" +#define MAX_RANGE 0x0000FFFF + +/* general flags */ +#define IPSET_MACIP_MATCHUNSET 1 + +/* per ip flags */ +#define IPSET_MACIP_ISSET 1 + +struct nf_set_macipmap { + void *members; /* the macipmap proper */ + nf_set_ip_t first_ip; /* host byte order, included in range */ + nf_set_ip_t last_ip; /* host byte order, included in range */ + u_int32_t flags; +}; + +struct nf_set_req_macipmap_create { + nf_set_ip_t from; + nf_set_ip_t to; + u_int32_t flags; +}; + +struct nf_set_req_macipmap { + nf_set_ip_t ip; + unsigned char ethernet[ETH_ALEN]; +}; + +struct nf_set_macip { + unsigned short flags; + unsigned char ethernet[ETH_ALEN]; +}; + +#endif /* __NF_SET_MACIPMAP_H */ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nf_set_malloc.h linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_malloc.h --- linux-2.6.15.3-orig/include/linux/netfilter/nf_set_malloc.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_malloc.h 2006-03-08 17:33:42.000000000 +0100 @@ -0,0 +1,33 @@ +#ifndef __NF_SET_MALLOC_H +#define __NF_SET_MALLOC_H + +#ifdef __KERNEL__ + +/* Memory allocation and deallocation */ +static size_t max_malloc_size = 0; + +static inline void init_max_malloc_size(void) +{ +#define CACHE(x) max_malloc_size = x; +#include +#undef CACHE +} + +static inline void * nf_set_malloc(size_t bytes, gfp_t flags) +{ + if (bytes > max_malloc_size) + return vmalloc(bytes); + else + return kmalloc(bytes, flags); +} + +static inline void nf_set_free(void * data, size_t bytes) +{ + if (bytes > max_malloc_size) + vfree(data); + else + kfree(data); +} +#endif /* __KERNEL__ */ + +#endif /*__NF_SET_MALLOC_H*/ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nf_set_nethash.h linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_nethash.h --- linux-2.6.15.3-orig/include/linux/netfilter/nf_set_nethash.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_nethash.h 2006-03-08 23:25:52.000000000 +0100 @@ -0,0 +1,54 @@ +#ifndef __NF_SET_NETHASH_H +#define __NF_SET_NETHASH_H + +#include + +#define SETTYPE_NAME "nethash" +#define MAX_RANGE 0x0000FFFF + +struct nf_set_nethash { + nf_set_ip_t *members; /* the nethash proper */ + uint32_t hashsize; /* hash size */ + uint16_t probes; /* max number of probes */ + uint16_t resize; /* resize factor in percent */ + unsigned char cidr[30]; /* CIDR sizes */ + void *initval[0]; /* initvals for jhash_1word */ +}; + +struct nf_set_req_nethash_create { + uint32_t hashsize; + uint16_t probes; + uint16_t resize; +}; + +struct nf_set_req_nethash { + nf_set_ip_t ip; + unsigned char cidr; +}; + +static unsigned char shifts[] = {255, 253, 249, 241, 225, 193, 129, 1}; + +static inline nf_set_ip_t +pack(nf_set_ip_t ip, unsigned char cidr) +{ + nf_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 /* __NF_SET_NETHASH_H */ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nf_set_portmap.h linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_portmap.h --- linux-2.6.15.3-orig/include/linux/netfilter/nf_set_portmap.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nf_set_portmap.h 2006-03-08 23:26:07.000000000 +0100 @@ -0,0 +1,25 @@ +#ifndef __NF_SET_PORTMAP_H +#define __NF_SET_PORTMAP_H + +#include + +#define SETTYPE_NAME "portmap" +#define MAX_RANGE 0x0000FFFF +#define INVALID_PORT (MAX_RANGE + 1) + +struct nf_set_portmap { + void *members; /* the portmap proper */ + nf_set_ip_t first_port; /* host byte order, included in range */ + nf_set_ip_t last_port; /* host byte order, included in range */ +}; + +struct nf_set_req_portmap_create { + nf_set_ip_t from; + nf_set_ip_t to; +}; + +struct nf_set_req_portmap { + nf_set_ip_t port; +}; + +#endif /* __NF_SET_PORTMAP_H */ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nfnetlink.h linux-2.6.15.3-nfset/include/linux/netfilter/nfnetlink.h --- linux-2.6.15.3-orig/include/linux/netfilter/nfnetlink.h 2006-02-07 00:36:47.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nfnetlink.h 2006-03-13 13:24:08.000000000 +0100 @@ -101,7 +101,8 @@ #define NFNL_SUBSYS_CTNETLINK_EXP 2 #define NFNL_SUBSYS_QUEUE 3 #define NFNL_SUBSYS_ULOG 4 -#define NFNL_SUBSYS_COUNT 5 +#define NFNL_SUBSYS_SET 5 +#define NFNL_SUBSYS_COUNT 6 #ifdef __KERNEL__ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter/nfnetlink_set.h linux-2.6.15.3-nfset/include/linux/netfilter/nfnetlink_set.h --- linux-2.6.15.3-orig/include/linux/netfilter/nfnetlink_set.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter/nfnetlink_set.h 2006-03-13 18:02:17.000000000 +0100 @@ -0,0 +1,128 @@ +#ifndef _NFNETLINK_SET_H +#define _NFNETLINK_SET_H + +enum nfset_msg_types { + NLSET_OP_CREATE, /* Create a new (empty) set */ + NLSET_OP_DESTROY, /* Remove a (empty) set */ + NLSET_OP_FLUSH, /* Remove all elements from a set */ + NLSET_OP_RENAME, /* Rename a set */ + NLSET_OP_SWAP, /* Swap two sets */ + + NLSET_OP_ADT_GET, /* Get set and type */ + NLSET_OP_ADD, /* Add element(s) to a set */ + NLSET_OP_DEL, /* Remove element(s) from a set */ + NLSET_OP_TEST, /* Test an element in a set */ + + NLSET_OP_LIST, /* List all sets */ + NLSET_OP_LIST_SET, /* List a set */ + NLSET_OP_STATS, /* Get set stats */ + + NLSET_MSG_MAX +}; + +/* Main attributes: create */ +enum nfset_attr_set_create_type { + NFSET_CREATE_UNSPEC, + NFSET_CREATE_NAME, /* Name of the set */ + NFSET_CREATE_TYPENAME, /* Type name of the set */ + NFSET_CREATE_SUBTYPE, /* Subtype version */ + NFSET_CREATE_DATA, /* Data: type specific data */ + __NFSET_CREATE_MAX +}; +#define NFSET_CREATE_MAX (__NFSET_CREATE_MAX - 1) + +/* Set header data (create/list): */ +enum nfset_attr_info_type { + NFSET_ATTR_HEADER_UNSPEC, + NFSET_ATTR_HEADER_GENERAL, /* General params */ + NFSET_ATTR_HEADER_L2DATA, /* Layer 2 data */ + NFSET_ATTR_HEADER_L3DATA, /* Layer 3 data */ + NFSET_ATTR_HEADER_L4DATA, /* Layer 4 data */ + __NFSET_ATTR_HEADER_MAX +}; +#define NFSET_ATTR_HEADER_MAX (__NFSET_ATTR_HEADER_MAX - 1) + +enum nfset_attr_general_data_type { + NFSET_ATTR_GENERAL_UNSPEC, + NFSET_ATTR_GENERAL_SIZE, /* Hash size */ + NFSET_ATTR_GENERAL_LIMIT, /* Limit number of elements */ + NFSET_ATTR_GENERAL_TIMEOUT, /* Timeout parameter */ + NFSET_ATTR_GENERAL_FLAGS, /* Set specific create flags */ + __NFSET_ATTR_GENERAL_MAX +}; +#define NFSET_ATTR_GENERAL_MAX (__NFSET_ATTR_GENERAL_MAX - 1) + +enum nfset_attr_layer2_data_type { + NFSET_ATTR_L2_UNSPEC, + NFSET_ATTR_L2_ETHERNET, /* MAC or hardware address */ + __NFSET_ATTR_L2_MAX +}; +#define NFSET_ATTR_L2_MAX (__NFSET_ATTR_L2_MAX - 1) + +enum nfset_attr_layer3_data_type { + NFSET_ATTR_L3_UNSPEC, + NFSET_ATTR_L3_PROTONUM, /* protocol family */ + NFSET_ATTR_L3_IPV4_FROM, /* IPv4 from address */ + NFSET_ATTR_L3_IPV4_TO, /* IPv4 to address */ + NFSET_ATTR_L3_IPV6_FROM, /* IPv6 from address */ + NFSET_ATTR_L3_IPV6_TO, /* IPv6 to address */ + NFSET_ATTR_L3_MASK, /* IPv4/IPv6 netmask */ + __NFSET_ATTR_L3_MAX +}; +#define NFSET_ATTR_L3_MAX (__NFSET_ATTR_L3_MAX - 1) + +enum nfset_attr_layer4_data_type { + NFSET_ATTR_L4_UNSPEC, + NFSET_ATTR_L4_FROM, /* From port */ + NFSET_ATTR_L4_TO, /* To port */ + __NFSET_ATTR_L4_MAX +}; +#define NFSET_ATTR_L4_MAX (__NFSET_ATTR_L4_MAX - 1) + +/* Main attributes: destroy, flush, adt_get, list */ +enum nfset_attr_set_list_type { + NFSET_LIST_UNSPEC, + NFSET_LIST_NAME, /* Name of the set */ + __NFSET_LIST_MAX +}; +#define NFSET_LIST_MAX (__NFSET_LIST_MAX - 1) + +/* Main attributes: list_members */ +enum nfset_attr_set_list_data_type { + NFSET_LIST_DATA_UNSPEC, + NFSET_LIST_DATA, /* Members data */ + __NFSET_LIST_DATA_MAX +}; +#define NFSET_LIST_DATA_MAX (__NFSET_LIST_DATA_MAX - 1) + +/* Main attributes: rename, swap */ +enum nfset_attr_set_rename_type { + NFSET_RENAME_UNSPEC, + NFSET_RENAME_FROM, /* From name */ + NFSET_RENAME_TO, /* To name */ + __NFSET_RENAME_MAX +}; +#define NFSET_RENAME_MAX (__NFSET_RENAME_MAX - 1) + +/* Main attributes: adt */ +enum nfset_attr_set_adt_type { + NFSET_ADT_UNSPEC, + NFSET_ADT_ID, /* Set id */ + NFSET_ADT_FLAGS, /* Flags for add/del/test */ + NFSET_ADT_DATA, /* Set specific data */ + __NFSET_ADT_MAX +}; +#define NFSET_ADT_MAX (__NFSET_ADT_MAX - 1) + +/* Main attributes: reply to adt_get */ +enum nfset_attr_set_get_type { + NFSET_GET_UNSPEC, + NFSET_GET_ID, /* Set id */ + NFSET_GET_TYPENAME, /* Settype name */ + NFSET_GET_SUBTYPE_BASE, /* Base of supported subtypes */ + NFSET_GET_SUBTYPE_NEXT, /* Next, unsupported subtype */ + __NFSET_GET_MAX +}; +#define NFSET_GET_MAX (__NFSET_GET_MAX - 1) + +#endif /* _NFNETLINK_SET_H */ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/include/linux/netfilter_ipv4/ipt_set.h linux-2.6.15.3-nfset/include/linux/netfilter_ipv4/ipt_set.h --- linux-2.6.15.3-orig/include/linux/netfilter_ipv4/ipt_set.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/include/linux/netfilter_ipv4/ipt_set.h 2006-03-13 13:18:31.000000000 +0100 @@ -0,0 +1,23 @@ +#ifndef _IPT_SET_H +#define _IPT_SET_H + +#include + +struct ipt_set_info { + char name[NF_SET_MAXNAMELEN]; + nf_set_id_t index; + u_int32_t flags[NF_SET_MAX_STORAGE + 1]; +}; + +/* match info */ +struct ipt_set_info_match { + struct ipt_set_info match_set; +}; + +/* target info */ +struct ipt_set_info_target { + struct ipt_set_info add_set; + struct ipt_set_info del_set; +}; + +#endif /*_IPT_SET_H*/ diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/ipv4/netfilter/Kconfig linux-2.6.15.3-nfset/net/ipv4/netfilter/Kconfig --- linux-2.6.15.3-orig/net/ipv4/netfilter/Kconfig 2006-02-07 00:36:47.000000000 +0100 +++ linux-2.6.15.3-nfset/net/ipv4/netfilter/Kconfig 2006-03-09 10:22:11.000000000 +0100 @@ -842,5 +842,25 @@ Allows altering the ARP packet payload: source and destination hardware and network addresses. +config IP_NF_MATCH_SET + tristate "set match support" + depends on NF_SET + help + Set matching matches against given IP sets. + You need the nfset 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 NF_SET + help + The SET target makes possible to add/delete entries + in IP sets. + You need the nfset utility to create and set up the sets. + + To compile it as a module, choose M here. If unsure, say N. + + endmenu diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/ipv4/netfilter/Makefile linux-2.6.15.3-nfset/net/ipv4/netfilter/Makefile --- linux-2.6.15.3-orig/net/ipv4/netfilter/Makefile 2006-02-07 00:36:47.000000000 +0100 +++ linux-2.6.15.3-nfset/net/ipv4/netfilter/Makefile 2006-03-08 15:48:16.000000000 +0100 @@ -52,6 +52,7 @@ obj-$(CONFIG_IP_NF_MATCH_SCTP) += ipt_sctp.o obj-$(CONFIG_IP_NF_MATCH_DCCP) += ipt_dccp.o obj-$(CONFIG_IP_NF_MATCH_MARK) += ipt_mark.o +obj-$(CONFIG_IP_NF_MATCH_SET) += ipt_set.o obj-$(CONFIG_IP_NF_MATCH_MAC) += ipt_mac.o obj-$(CONFIG_IP_NF_MATCH_IPRANGE) += ipt_iprange.o obj-$(CONFIG_IP_NF_MATCH_PKTTYPE) += ipt_pkttype.o @@ -92,6 +93,7 @@ obj-$(CONFIG_IP_NF_TARGET_ULOG) += ipt_ULOG.o obj-$(CONFIG_IP_NF_TARGET_TCPMSS) += ipt_TCPMSS.o obj-$(CONFIG_IP_NF_TARGET_NOTRACK) += ipt_NOTRACK.o +obj-$(CONFIG_IP_NF_TARGET_SET) += ipt_SET.o obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o obj-$(CONFIG_IP_NF_TARGET_TTL) += ipt_TTL.o obj-$(CONFIG_IP_NF_TARGET_NFQUEUE) += ipt_NFQUEUE.o diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/ipv4/netfilter/ipt_SET.c linux-2.6.15.3-nfset/net/ipv4/netfilter/ipt_SET.c --- linux-2.6.15.3-orig/net/ipv4/netfilter/ipt_SET.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/net/ipv4/netfilter/ipt_SET.c 2006-03-13 13:22:06.000000000 +0100 @@ -0,0 +1,122 @@ +/* Copyright (C) 2000-2002 Joakim Axelsson + * Patrick Schaaf + * Martin Josefsson + * Copyright (C) 2003-2004 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* ipt_SET.c - netfilter target to manipulate IP sets */ + +#include +#include + +#include +#include + +static unsigned int +target(struct sk_buff **pskb, + const struct net_device *in, + const struct net_device *out, + unsigned int hooknum, + const void *targinfo, + void *userinfo) +{ + const struct ipt_set_info_target *info = targinfo; + + if (info->add_set.index != NF_SET_INVALID_ID) + nf_set_add_kernel(info->add_set.index, + *pskb, + info->add_set.flags); + if (info->del_set.index != NF_SET_INVALID_ID) + nf_set_del_kernel(info->del_set.index, + *pskb, + info->del_set.flags); + + return IPT_CONTINUE; +} + +static int +checkentry(const char *tablename, + const struct ipt_entry *e, + void *targinfo, + unsigned int targinfosize, unsigned int hook_mask) +{ + struct ipt_set_info_target *info = + (struct ipt_set_info_target *) targinfo; + + if (targinfosize != IPT_ALIGN(sizeof(*info))) { + DP("bad target info size %u", targinfosize); + return 0; + } + + if (info->add_set.name[0] != '\0') { + info->add_set.index = nf_set_get_byname(info->add_set.name); + if (info->add_set.index == NF_SET_INVALID_ID) { + nf_set_printk("cannot find set %s as target", + info->add_set.name); + return 0; /* error */ + } + } else + info->add_set.index = NF_SET_INVALID_ID; + + if (info->del_set.name[0] != '\0') { + info->del_set.index = nf_set_get_byname(info->del_set.name); + if (info->del_set.index == NF_SET_INVALID_ID) { + nf_set_printk("cannot find set %s as target", + info->del_set.name); + return 0; /* error */ + } + } else + info->del_set.index = NF_SET_INVALID_ID; + + if (info->add_set.flags[NF_SET_MAX_STORAGE] != 0 + || info->del_set.flags[NF_SET_MAX_STORAGE] != 0) { + nf_set_printk("That's nasty!"); + return 0; /* error */ + } + + return 1; +} + +static void destroy(void *targetinfo, unsigned int targetsize) +{ + struct ipt_set_info_target *info = targetinfo; + + if (targetsize != IPT_ALIGN(sizeof(struct ipt_set_info_target))) { + nf_set_printk("invalid targetsize %d", targetsize); + return; + } + + if (info->add_set.index != NF_SET_INVALID_ID) + nf_set_put_byindex(info->add_set.index); + if (info->del_set.index != NF_SET_INVALID_ID) + nf_set_put_byindex(info->del_set.index); +} + +static struct ipt_target SET_target = { + .name = "SET", + .target = target, + .checkentry = checkentry, + .destroy = destroy, + .me = THIS_MODULE +}; + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jozsef Kadlecsik "); +MODULE_DESCRIPTION("iptables IP set target module"); + +static int __init init(void) +{ + return ipt_register_target(&SET_target); +} + +static void __exit fini(void) +{ + ipt_unregister_target(&SET_target); +} + +module_init(init); +module_exit(fini); diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/ipv4/netfilter/ipt_set.c linux-2.6.15.3-nfset/net/ipv4/netfilter/ipt_set.c --- linux-2.6.15.3-orig/net/ipv4/netfilter/ipt_set.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/net/ipv4/netfilter/ipt_set.c 2006-03-13 13:20:50.000000000 +0100 @@ -0,0 +1,109 @@ +/* Copyright (C) 2000-2002 Joakim Axelsson + * Patrick Schaaf + * Martin Josefsson + * Copyright (C) 2003-2004 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* Kernel module to match an IP set. */ + +#include +#include + +#include +#include + +static inline int +match_set(const struct ipt_set_info *info, + const struct sk_buff *skb, + int inv) +{ + if (nf_set_test_kernel(info->index, skb, info->flags)) + inv = !inv; + return inv; +} + +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) +{ + const struct ipt_set_info_match *info = matchinfo; + + return match_set(&info->match_set, + skb, + info->match_set.flags[0] & NFSET_MATCH_INV); +} + +static int +checkentry(const char *tablename, + const struct ipt_ip *ip, + void *matchinfo, + unsigned int matchsize, + unsigned int hook_mask) +{ + struct ipt_set_info_match *info = + (struct ipt_set_info_match *) matchinfo; + + if (matchsize != IPT_ALIGN(sizeof(struct ipt_set_info_match))) { + nf_set_printk("invalid matchsize %d", matchsize); + return 0; + } + + info->match_set.index = nf_set_get_byname(info->match_set.name); + + if (info->match_set.index == NF_SET_INVALID_ID) { + nf_set_printk("Cannot find set %s to match", + info->match_set.name); + return 0; /* error */ + } + if (info->match_set.flags[NF_SET_MAX_STORAGE] != 0) { + nf_set_printk("That's nasty!"); + return 0; /* error */ + } + + return 1; +} + +static void destroy(void *matchinfo, unsigned int matchsize) +{ + struct ipt_set_info_match *info = matchinfo; + + if (matchsize != IPT_ALIGN(sizeof(struct ipt_set_info_match))) { + nf_set_printk("invalid matchsize %d", matchsize); + return; + } + + nf_set_put_byindex(info->match_set.index); +} + +static struct ipt_match set_match = { + .name = "set", + .match = &match, + .checkentry = &checkentry, + .destroy = &destroy, + .me = THIS_MODULE +}; + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jozsef Kadlecsik "); +MODULE_DESCRIPTION("iptables IP set match module"); + +static int __init init(void) +{ + return ipt_register_match(&set_match); +} + +static void __exit fini(void) +{ + ipt_unregister_match(&set_match); +} + +module_init(init); +module_exit(fini); diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/netfilter/Kconfig linux-2.6.15.3-nfset/net/netfilter/Kconfig --- linux-2.6.15.3-orig/net/netfilter/Kconfig 2006-02-07 00:36:47.000000000 +0100 +++ linux-2.6.15.3-nfset/net/netfilter/Kconfig 2006-03-09 10:23:51.000000000 +0100 @@ -95,4 +95,82 @@ To compile it as a module, choose M here. If unsure, say N. +config 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 + nfset(8). + + To compile it as a module, choose M here. If unsure, say N. + +config NF_SET_MAX + int "Maximum number of IP sets" + default 256 + range 2 65534 + depends on 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 'nf_set' module. + +config NF_SET_IPMAP + tristate "ipmap set support" + depends on 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 NF_SET_MACIPMAP + tristate "macipmap set support" + depends on 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 NF_SET_PORTMAP + tristate "portmap set support" + depends on 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 NF_SET_IPHASH + tristate "iphash set support" + depends on 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 NF_SET_NETHASH + tristate "nethash set support" + depends on 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 NF_SET_IPPORTHASH + tristate "ipporthash set support" + depends on 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 NF_SET_IPTREE + tristate "iptree set support" + depends on NF_SET + help + This option adds the iptree set type support. + + To compile it as a module, choose M here. If unsure, say N. + endmenu diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/netfilter/Makefile linux-2.6.15.3-nfset/net/netfilter/Makefile --- linux-2.6.15.3-orig/net/netfilter/Makefile 2006-02-07 00:36:47.000000000 +0100 +++ linux-2.6.15.3-nfset/net/netfilter/Makefile 2006-03-08 15:48:59.000000000 +0100 @@ -2,6 +2,16 @@ obj-$(CONFIG_NETFILTER) = netfilter.o +# sets +obj-$(CONFIG_NF_SET) += nf_set.o +obj-$(CONFIG_NF_SET_IPMAP) += nf_set_ipmap.o +obj-$(CONFIG_NF_SET_PORTMAP) += nf_set_portmap.o +obj-$(CONFIG_NF_SET_MACIPMAP) += nf_set_macipmap.o +obj-$(CONFIG_NF_SET_IPHASH) += nf_set_iphash.o +obj-$(CONFIG_NF_SET_NETHASH) += nf_set_nethash.o +obj-$(CONFIG_NF_SET_IPPORTHASH) += nf_set_ipporthash.o +obj-$(CONFIG_NF_SET_IPTREE) += nf_set_iptree.o + obj-$(CONFIG_NETFILTER_NETLINK) += nfnetlink.o obj-$(CONFIG_NETFILTER_NETLINK_QUEUE) += nfnetlink_queue.o obj-$(CONFIG_NETFILTER_NETLINK_LOG) += nfnetlink_log.o diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/netfilter/nf_set.c linux-2.6.15.3-nfset/net/netfilter/nf_set.c --- linux-2.6.15.3-orig/net/netfilter/nf_set.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/net/netfilter/nf_set.c 2006-03-13 19:17:05.000000000 +0100 @@ -0,0 +1,1407 @@ +/* Copyright (C) 2000-2002 Joakim Axelsson + * Patrick Schaaf + * Martin Josefsson + * Copyright (C) 2003-2004 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* Kernel module for IP set management */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define ASSERT_READ_LOCK(x) /* dont use that */ +#define ASSERT_WRITE_LOCK(x) +#include +#include +#include +#include + +static struct list_head set_type_list; /* all registered sets */ +static struct nf_set **nf_set_list; /* all individual sets */ +static DEFINE_RWLOCK(nf_set_lock); /* protects the lists */ +static nf_set_id_t nf_set_max = CONFIG_NF_SET_MAX; /* max number of sets */ +static unsigned int nf_set_hash_random; /* random seed */ + +#define NFSET_BUFFER_LEN (NLMSG_GOODSIZE - NFA_LENGTH(0) - NFA_ALIGNTO - 1) + +/* Oh my, netlink_dump_start makes life hard :-( */ +static DEFINE_RWLOCK(nfset_list_lock); /* Protect the global variables */ +static nf_set_id_t nfset_list_id = NF_SET_INVALID_ID; /* The set we are dumping */ +static nf_set_id_t *nfset_list_ids = NULL; /* Snapshot of ids */ +static unsigned char list_buffer[NFSET_BUFFER_LEN]; + +static char __initdata version[] = "0.20"; + +/* Shamelessly stolen from rtnetlink.h */ +#define BUG_TRAP(x) do { \ + if (unlikely(!(x))) { \ + printk(KERN_ERR "KERNEL: assertion (%s) failed at %s (%d)\n", \ + #x, __FILE__ , __LINE__); \ + } \ +} while(0) + +/* + * Unified cache management + */ +struct nf_set_cache { + char name[16]; + size_t size; + unsigned int use; + kmem_cache_t *cache; +}; + +/* Prevent creating the caches with the same name */ +DECLARE_MUTEX(nf_set_cache_mutex); +static struct nf_set_cache *nf_set_cache[8] = {}; + +int nf_set_cache_create(size_t size, unsigned int *id) +{ + struct nf_set_cache *cache; + int i, j, ret = 0; + + down(&nf_set_cache_mutex); + for (i = 0, j = 8; i < 8; i++) { + if (nf_set_cache[i] == NULL && j == 8) + j = i; + else if (nf_set_cache[i] && nf_set_cache[i]->size == size) { + *id = i; + nf_set_cache[i]->use++; + goto up_mutex; + } + } + *id = j; + BUG_TRAP(j == 8); + + cache = kmalloc(sizeof(struct nf_set_cache), GFP_KERNEL); + if (!cache) { + ret = -ENOMEM; + goto up_mutex; + } + + cache->size = size; + sprintf(cache->name, "nf_set_cache%u", size); + cache->use = 1; + cache->cache = kmem_cache_create(cache->name, size, 0, 0, NULL, NULL); + if (cache->cache) + goto up_mutex; + + ret = -ENOMEM; + kfree(cache); + up_mutex: + up(&nf_set_cache_mutex); + + return ret; +} + +void nf_set_cache_destroy(unsigned int id) +{ + BUG_TRAP(!nf_set_cache[id]); + + down(&nf_set_cache_mutex); + if (--nf_set_cache[id]->use > 0) { + up(&nf_set_cache_mutex); + return; + } + kmem_cache_destroy(nf_set_cache[id]->cache); + kfree(nf_set_cache[id]); + nf_set_cache[id] = NULL; + up(&nf_set_cache_mutex); +} + +void * nf_set_cache_alloc(unsigned int id, gfp_t flags) +{ + BUG_TRAP(!nf_set_cache[id]); + return kmem_cache_alloc(nf_set_cache[id]->cache, flags); +} + +void nf_set_cache_free(unsigned int id, void *data) +{ + BUG_TRAP(!nf_set_cache[id]); + kmem_cache_free(nf_set_cache[id]->cache, data); +} + +/* + * Sets can be identified by name, index or id. + * From kernel (i.e netfilter set/SET match and target + * modules) we refer to the sets by the index. + * From userspace we refer to the sets by name and id. + */ + +static inline void +__nf_set_get(nf_set_id_t index) +{ + atomic_inc(&nf_set_list[index]->ref); +} + +static inline void +__nf_set_put(nf_set_id_t index) +{ + atomic_dec(&nf_set_list[index]->ref); +} + +/* + * Kernel space routines + */ + +/* Add, del and test set entries from kernel */ + +int +nf_set_test_kernel(nf_set_id_t index, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + struct nf_set *set; + int res; + + BUG_TRAP(index >= nf_set_max || !flags[0]); + + read_lock_bh(&nf_set_lock); + set = nf_set_list[index]; + read_unlock_bh(&nf_set_lock); + NF_SET_ASSERT(set); + DP("set %s, index %u", set->name, index); + + read_lock_bh(&set->lock); + res = set->subtype->test_kernel(set, skb, flags); + read_unlock_bh(&set->lock); + + return res; +} + +void +nf_set_add_kernel(nf_set_id_t index, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + struct nf_set *set; + + BUG_TRAP(index >= nf_set_max || !flags[0]); + + read_lock_bh(&nf_set_lock); + set = nf_set_list[index]; + read_unlock_bh(&nf_set_lock); + NF_SET_ASSERT(set); + DP("set %s, index %u", set->name, index); + + write_lock_bh(&set->lock); + set->subtype->add_kernel(set, skb, flags); + write_unlock_bh(&set->lock); +} + +void +nf_set_del_kernel(nf_set_id_t index, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + struct nf_set *set; + + BUG_TRAP(index >= nf_set_max || !flags[0]); + + read_lock_bh(&nf_set_lock); + set = nf_set_list[index]; + read_unlock_bh(&nf_set_lock); + NF_SET_ASSERT(set); + DP("set %s, index %u", set->name, index); + + write_lock_bh(&set->lock); + set->subtype->del_kernel(set, skb, flags); + write_unlock_bh(&set->lock); +} + +/* Get set (index) and put by index */ + +nf_set_id_t +nf_set_get_byname(const char *name) +{ + nf_set_id_t i, index = NF_SET_INVALID_ID; + + read_lock_bh(&nf_set_lock); + for (i = 0; i < nf_set_max; i++) { + if (nf_set_list[i] != NULL + && strcmp(nf_set_list[i]->name, name) == 0) { + __nf_set_get(i); + index = i; + break; + } + } + read_unlock_bh(&nf_set_lock); + return index; +} + +void nf_set_put_byindex(nf_set_id_t index) +{ + read_lock_bh(&nf_set_lock); + if (index < nf_set_max && nf_set_list[index]) + __nf_set_put(index); + read_unlock_bh(&nf_set_lock); +} + +/* Register and deregister settype */ + +static inline int +set_type_equal(const struct nf_set_type *set_type, const char *str2) +{ + return !strncmp(set_type->typename, str2, NF_SET_MAXNAMELEN - 1); +} + +static inline struct nf_set_type * +find_set_type(const char *name) +{ + return LIST_FIND(&set_type_list, + set_type_equal, + struct nf_set_type *, + name); +} + +int +nf_set_register_set_type(struct nf_set_type *set_type) +{ + int ret = 0; + + if (set_type->protocol_version != NF_SET_PROTOCOL_VERSION) { + nf_set_printk("'%s' uses wrong protocol version %u (want %u)", + set_type->typename, + set_type->protocol_version, + NF_SET_PROTOCOL_VERSION); + return -EINVAL; + } + + write_lock_bh(&nf_set_lock); + if (find_set_type(set_type->typename)) { + /* Duplicate! */ + nf_set_printk("'%s' already registered!", + set_type->typename); + ret = -EINVAL; + goto unlock; + } + if (!try_module_get(THIS_MODULE)) { + ret = -EFAULT; + goto unlock; + } + list_append(&set_type_list, set_type); + DP("'%s' registered.", set_type->typename); + unlock: + write_unlock_bh(&nf_set_lock); + return ret; +} + +void +nf_set_unregister_set_type(struct nf_set_type *set_type) +{ + write_lock_bh(&nf_set_lock); + if (!find_set_type(set_type->typename)) { + nf_set_printk("'%s' not registered?", + set_type->typename); + goto unlock; + } + LIST_DELETE(&set_type_list, set_type); + module_put(THIS_MODULE); + DP("'%s' unregistered.", set_type->typename); + unlock: + write_unlock_bh(&nf_set_lock); + +} + +/* + * 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 nfset_put(). + */ +static struct nf_set * +nfset_get(const char *name) +{ + nf_set_id_t i; + struct nf_set *set = NULL; + + read_lock_bh(&nf_set_lock); + for (i = 0; i < nf_set_max; i++) { + if (nf_set_list[i] != NULL + && strcmp(nf_set_list[i]->name, name) == 0) { + __nf_set_get(i); + set = nf_set_list[i]; + break; + } + } + read_unlock_bh(&nf_set_lock); + return set; +} + +static struct nf_set * +nfset_get_byid(nf_set_id_t id) +{ + nf_set_id_t i; + struct nf_set *set = NULL; + + read_lock_bh(&nf_set_lock); + for (i = 0; i < nf_set_max; i++) { + if (nf_set_list[i] != NULL + && nf_set_list[i]->id == id) { + __nf_set_get(i); + set = nf_set_list[i]; + break; + } + } + read_unlock_bh(&nf_set_lock); + return set; +} + +/* + * If the given set pointer points to a valid set, decrement + * reference count by 1. The caller shall not assume the id + * to be valid, after calling this function. + */ +static void +nfset_put(nf_set_id_t id) +{ + nf_set_id_t i; + + read_lock_bh(&nf_set_lock); + for (i = 0; i < nf_set_max; i++) { + if (nf_set_list[i] != NULL + && nf_set_list[i]->id == id) { + __nf_set_put(i); + break; + } + } + read_unlock_bh(&nf_set_lock); +} + +/* + * Create a set + */ +static struct nf_set_type * +find_set_type_rlock(const char *typename) +{ + struct nf_set_type *type; + + read_lock_bh(&nf_set_lock); + type = find_set_type(typename); + if (type == NULL) + read_unlock_bh(&nf_set_lock); + + /* read_unlock_bh(&nf_set_lock) is called in nf_set_create! */ + return type; +} + +static int +find_free_id(const char *name, + nf_set_id_t *index, + nf_set_id_t *id) +{ + nf_set_id_t i; + + *id = NF_SET_INVALID_ID; + for (i = 0; i < nf_set_max; i++) { + if (nf_set_list[i] == NULL) { + if (*id == NF_SET_INVALID_ID) + *id = *index = i; + } else if (strcmp(name, nf_set_list[i]->name) == 0) + /* Name clash */ + return -EEXIST; + } + if (*id == NF_SET_INVALID_ID) + /* No free slot remained */ + return -ERANGE; + /* Check that index is usable as id (swapping) */ + check: + for (i = 0; i < nf_set_max; i++) { + if (nf_set_list[i] != NULL + && nf_set_list[i]->id == *id) { + *id = i; + goto check; + } + } + return 0; +} + +/* Convert attributes to the unified set header data */ +static inline int +attr_to_proto_general(struct nfattr *tb[], struct nfset_proto *proto) +{ + if (tb[NFSET_ATTR_GENERAL_SIZE-1]) { + proto->gen.size = + *(__u32 *)NFA_DATA(tb[NFSET_ATTR_GENERAL_SIZE-1]); + proto->flags &= NFSET_FLAG_GEN_SIZE; + } + if (tb[NFSET_ATTR_GENERAL_LIMIT-1]) { + proto->gen.limit = + *(__u32 *)NFA_DATA(tb[NFSET_ATTR_GENERAL_LIMIT-1]); + proto->flags &= NFSET_FLAG_GEN_LIMIT; + } + if (tb[NFSET_ATTR_GENERAL_TIMEOUT-1]) { + proto->gen.timeout = + *(__u32 *)NFA_DATA(tb[NFSET_ATTR_GENERAL_TIMEOUT-1]); + proto->flags &= NFSET_FLAG_GEN_TIMEOUT; + } + if (tb[NFSET_ATTR_GENERAL_FLAGS-1]) { + proto->gen.flags = + *(__u32 *)NFA_DATA(tb[NFSET_ATTR_GENERAL_FLAGS-1]); + proto->flags &= NFSET_FLAG_GEN_FLAGS; + } + return 0; +} + +static inline int +attr_to_proto_l2(struct nfattr *tb[], struct nfset_proto *proto) +{ + if (tb[NFSET_ATTR_L2_ETHERNET-1]) { + strncpy(proto->l2.ethernet, + NFA_DATA(tb[NFSET_ATTR_L2_ETHERNET-1]), + ETH_ALEN); + proto->flags &= NFSET_FLAG_L2_ETHER; + } + return 0; +} + +static inline int +attr_to_proto_l3(struct nfattr *tb[], struct nfset_proto *proto) +{ + if (tb[NFSET_ATTR_L3_PROTONUM-1]) { + proto->l3.protonum = + *(__u16 *)NFA_DATA(tb[NFSET_ATTR_L3_PROTONUM-1]); + proto->flags &= NFSET_FLAG_L3_PROTONUM; + } else + return -1; + + switch (proto->l3.protonum) { + case AF_INET: + if (tb[NFSET_ATTR_L3_IPV4_FROM-1]) { + proto->l3.from.ipv4 = + *(__u32 *)NFA_DATA(tb[NFSET_ATTR_L3_IPV4_FROM-1]); + proto->flags &= NFSET_FLAG_L3_FROM; + } + if (tb[NFSET_ATTR_L3_IPV4_TO-1]) { + proto->l3.to.ipv4 = + *(__u32 *)NFA_DATA(tb[NFSET_ATTR_L3_IPV4_TO-1]); + proto->flags &= NFSET_FLAG_L3_TO; + } + break; + case AF_INET6: + if (tb[NFSET_ATTR_L3_IPV6_FROM-1]) { + memcpy(proto->l3.from.ipv6, + (__u32 *)NFA_DATA(tb[NFSET_ATTR_L3_IPV6_FROM-1]), + sizeof(proto->l3.from.ipv6)); + proto->flags &= NFSET_FLAG_L3_FROM; + } + if (tb[NFSET_ATTR_L3_IPV6_TO-1]) { + memcpy(proto->l3.to.ipv6, + (__u32 *)NFA_DATA(tb[NFSET_ATTR_L3_IPV6_TO-1]), + sizeof(proto->l3.to.ipv6)); + proto->flags &= NFSET_FLAG_L3_TO; + } + break; + } + if (tb[NFSET_ATTR_L3_MASK-1]) { + proto->l3.mask = + *(__u32 *)NFA_DATA(tb[NFSET_ATTR_L3_MASK-1]); + proto->flags &= NFSET_FLAG_L3_MASK; + } + return 0; +} + +static inline int +attr_to_proto_l4(struct nfattr *tb[], struct nfset_proto *proto) +{ + if (tb[NFSET_ATTR_L4_FROM-1]) { + proto->l4.from = + *(__u16 *)NFA_DATA(tb[NFSET_ATTR_L4_FROM-1]); + proto->flags &= NFSET_FLAG_L4_FROM; + } + if (tb[NFSET_ATTR_L4_TO-1]) { + proto->l4.to = + *(__u16 *)NFA_DATA(tb[NFSET_ATTR_L4_TO-1]); + proto->flags &= NFSET_FLAG_L4_TO; + } + return 0; +} + +static int attr_to_proto(struct nfattr *tb[], struct nfset_proto *proto) +{ + if (tb[NFSET_ATTR_HEADER_GENERAL-1]) { + struct nfattr *tb2[NFSET_ATTR_GENERAL_MAX]; + + nfattr_parse_nested(tb2, NFSET_ATTR_GENERAL_MAX, + tb[NFSET_ATTR_HEADER_GENERAL-1]); + + if (attr_to_proto_general(tb2, proto)) + return -1; + } + if (tb[NFSET_ATTR_HEADER_L2DATA-1]) { + struct nfattr *tb2[NFSET_ATTR_L2_MAX]; + + nfattr_parse_nested(tb2, NFSET_ATTR_L2_MAX, + tb[NFSET_ATTR_HEADER_L2DATA-1]); + + if (attr_to_proto_l2(tb2, proto)) + return -1; + } + if (tb[NFSET_ATTR_HEADER_L3DATA-1]) { + struct nfattr *tb2[NFSET_ATTR_L3_MAX]; + + nfattr_parse_nested(tb2, NFSET_ATTR_L3_MAX, + tb[NFSET_ATTR_HEADER_L3DATA-1]); + + if (attr_to_proto_l3(tb2, proto)) + return -1; + } + if (tb[NFSET_ATTR_HEADER_L4DATA-1]) { + struct nfattr *tb2[NFSET_ATTR_L4_MAX]; + + nfattr_parse_nested(tb2, NFSET_ATTR_L4_MAX, + tb[NFSET_ATTR_HEADER_L4DATA-1]); + + if (attr_to_proto_l4(tb2, proto)) + return -1; + } + return 0; +} + +static int +nfset_create(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp) +{ + char *name, *typename; + unsigned int subtype; + struct nf_set *set; + nf_set_id_t index, id; + int res = 0; + struct nfattr *tb2[NFSET_ATTR_HEADER_MAX]; + struct nfset_proto proto = {}; + + if (!tb[NFSET_CREATE_NAME-1]) + return -EINVAL; + name = NFA_DATA(tb[NFSET_CREATE_NAME-1]); + name[NF_SET_MAXNAMELEN-1] = '\0'; + + if (!tb[NFSET_CREATE_TYPENAME-1]) + return -EINVAL; + typename = NFA_DATA(tb[NFSET_CREATE_TYPENAME-1]); + typename[NF_SET_MAXNAMELEN-1] = '\0'; + + if (!tb[NFSET_CREATE_SUBTYPE-1]) + return -EINVAL; + subtype = *(unsigned int *)NFA_DATA(tb[NFSET_CREATE_SUBTYPE-1]); + + /* + * The data part comes in netlink format. + */ + if (!tb[NFSET_CREATE_DATA-1]) + return -EINVAL; + nfattr_parse_nested(tb2, NFSET_ATTR_HEADER_MAX, + tb[NFSET_CREATE_DATA-1]); + if (attr_to_proto(tb2, &proto)) + return -EINVAL; + + /* + * First, and without any locks, allocate and initialize + * a normal base set structure. + */ + DP("setname: %s, typename: %s subtype: %u", name, typename, subtype); + set = kmalloc(sizeof(struct nf_set), GFP_KERNEL); + if (!set) + return -ENOMEM; + set->lock = RW_LOCK_UNLOCKED; + strncpy(set->name, name, NF_SET_MAXNAMELEN); + atomic_set(&set->ref, 0); + + /* + * Next, take the &nf_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 &nf_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[NF_SET_MAXNAMELEN + strlen("nf_set_") + 1]; + strcpy(modulename, "nf_set_"); + strcat(modulename, typename); + DP("try to load %s", modulename); + request_module(modulename); + set->type = find_set_type_rlock(typename); + } + if (set->type == NULL) { + nf_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(&nf_set_lock); + res = -EFAULT; + goto out; + } + read_unlock_bh(&nf_set_lock); + + /* + * Check subtype + */ + if (subtype < set->type->subtype_base + || subtype >= set->type->subtype_next) { + res = -ENOTSUPP; + goto put_out; + } + set->subtype = &set->type->subtypes[subtype]; + + /* + * Without holding any locks, create private part. + */ + res = set->subtype->create(set, &proto); + if (res != 0) + goto put_out; + + /* BTW, res==0 here. */ + + /* + * Here, we have a valid, constructed set. &nf_set_lock again, + * check that it is not already in nf_set_list. + */ + write_lock_bh(&nf_set_lock); + if ((res = find_free_id(set->name, &index, &id)) != 0) { + DP("no free index!"); + 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; + nf_set_list[index] = set; + write_unlock_bh(&nf_set_lock); + return res; + + cleanup: + write_unlock_bh(&nf_set_lock); + set->subtype->destroy(set); + put_out: + module_put(set->type->me); + out: + kfree(set); + return res; +} + +/* + * Destroy a set - or all sets + * Sets must not be referenced/used. + */ +static inline void +__destroy(struct nf_set *set) +{ + set->subtype->destroy(set); + module_put(set->type->me); + kfree(set); +} + +static int +nfset_destroy(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp) +{ + nf_set_id_t i; + char *name; + int ret = 0; + + if (!tb[NFSET_LIST_NAME-1]) + return EINVAL; + name = NFA_DATA(tb[NFSET_LIST_NAME-1]); + name[NF_SET_MAXNAMELEN-1] = '\0'; + DP("setname: %s", name); + + write_lock_bh(&nf_set_lock); + for (i = 0; i < nf_set_max; i++) { + if (nf_set_list[i] != NULL + && (name[0] == '\0' + || strcmp(name, nf_set_list[i]->name) == 0) + && atomic_read(&nf_set_list[i]->ref)) { + ret = -EBUSY; + goto unlock; + } + } + for (i = 0; i < nf_set_max; i++) { + if (nf_set_list[i] != NULL + && (name[0] == '\0' + || strcmp(name, nf_set_list[i]->name) == 0)) { + /* No reference exists and neither can spring into + * existence: no need to use the set lock */ + DP("set: %s", nf_set_list[i]->name); + __destroy(nf_set_list[i]); + nf_set_list[i] = NULL; + } + } +unlock: + write_unlock_bh(&nf_set_lock); + + return ret; +} + +/* + * Flush data in a set - or in all sets + */ +static int +nfset_flush(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp) +{ + struct nf_set *set; + nf_set_id_t i; + char *name; + + if (!tb[NFSET_LIST_NAME-1]) + return EINVAL; + name = NFA_DATA(tb[NFSET_LIST_NAME-1]); + name[NF_SET_MAXNAMELEN-1] = '\0'; + + read_lock_bh(&nf_set_lock); + for (i = 0; i < nf_set_max; i++) + if (nf_set_list[i] != NULL + && (name[0] == '\0' + || strcmp(name, nf_set_list[i]->name) == 0)) { + set = nf_set_list[i]; + DP("set: %s", set->name); + + write_lock_bh(&set->lock); + set->subtype->flush(set); + write_unlock_bh(&set->lock); + } + read_unlock_bh(&nf_set_lock); + + return 0; +} + +/* Rename a set */ +static int +nfset_rename(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp) +{ + struct nf_set *set = NULL; + nf_set_id_t i; + int ret = 0; + char *from, *to; + + if (!tb[NFSET_RENAME_FROM-1]) + return -EINVAL; + from = NFA_DATA(tb[NFSET_RENAME_FROM-1]); + from[NF_SET_MAXNAMELEN-1] = '\0'; + + if (!tb[NFSET_RENAME_TO-1]) + return -EINVAL; + to = NFA_DATA(tb[NFSET_RENAME_TO-1]); + to[NF_SET_MAXNAMELEN-1] = '\0'; + DP("set: from %s to %s", from, to); + + write_lock_bh(&nf_set_lock); + for (i = 0; i < nf_set_max; i++) { + if (nf_set_list[i] != NULL) { + if (strcmp(nf_set_list[i]->name, from) == 0) { + set = nf_set_list[i]; + } else if (strcmp(nf_set_list[i]->name, to) == 0) { + ret = -EEXIST; + goto unlock; + } + } + } + if (set != NULL) + strncpy(set->name, to, NF_SET_MAXNAMELEN); + else + ret = -ENOENT; + unlock: + write_unlock_bh(&nf_set_lock); + return ret; +} + +/* + * Swap two sets so that name/index points to the other. + */ +static int +nfset_swap(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp) +{ + struct nf_set *from_set, *to_set; + u_int32_t from_ref; + nf_set_id_t i, from_id, to_id; + char *from, *to; + int ret = 0; + + if (!tb[NFSET_RENAME_FROM-1]) + return -EINVAL; + from = NFA_DATA(tb[NFSET_RENAME_FROM-1]); + from[NF_SET_MAXNAMELEN-1] = '\0'; + + if (!tb[NFSET_RENAME_TO-1]) + return -EINVAL; + to = NFA_DATA(tb[NFSET_RENAME_TO-1]); + to[NF_SET_MAXNAMELEN-1] = '\0'; + + from_id = to_id = NF_SET_INVALID_ID; + DP("set: from %s to %s", from, to); + write_lock_bh(&nf_set_lock); + for (i = 0; i < nf_set_max; i++) { + if (nf_set_list[i] != NULL) { + if (strcmp(nf_set_list[i]->name, from) == 0) { + from_id = i; + } else if (strcmp(nf_set_list[i]->name, to) == 0) { + to_id = i; + } + } + } + if (from_id == NF_SET_INVALID_ID || to_id == NF_SET_INVALID_ID) { + ret = -EEXIST; + goto unlock; + } + from_set = nf_set_list[from_id]; + to_set = nf_set_list[to_id]; + from_ref = atomic_read(&from_set->ref); + + strncpy(from_set->name, to, NF_SET_MAXNAMELEN); + atomic_set(&from_set->ref, atomic_read(&to_set->ref)); + strncpy(to_set->name, from, NF_SET_MAXNAMELEN); + atomic_set(&to_set->ref, from_ref); + + nf_set_list[from_id] = to_set; + nf_set_list[to_id] = from_set; + + unlock: + write_unlock_bh(&nf_set_lock); + return ret; +} + +static inline struct nlmsghdr *__nfset_nfnetlink_header(struct sk_buff *skb) +{ + int type = 0; + struct nlmsghdr *nlh; + struct nfgenmsg *nfmsg; + + type |= NFNL_SUBSYS_SET << 8; + nlh = NLMSG_PUT(skb, 0, 0, type, sizeof(struct nfgenmsg)); + nfmsg = NLMSG_DATA(nlh); + + nlh->nlmsg_flags = 0; + nfmsg->nfgen_family = AF_INET; + nfmsg->version = NFNETLINK_V0; + nfmsg->res_id = 0; + + return nlh; + +nlmsg_failure: + return NULL; +} + +#define __ADT_TEST 0 +#define __ADT_ADD 1 +#define __ADT_DEL 2 + +static inline int +nfset_adt(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp, int mode) +{ + nf_set_id_t id; + unsigned int flags = 0; + struct nf_set *set; + int res = 0; + + if (!tb[NFSET_ADT_ID-1]) + return -EINVAL; + id = *(nf_set_id_t *)NFA_DATA(tb[NFSET_ADT_ID-1]); + + /* Unused at testing */ + if (tb[NFSET_ADT_FLAGS-1]) + flags = *(unsigned int *)NFA_DATA(tb[NFSET_ADT_FLAGS-1]); + + if (!tb[NFSET_ADT_DATA-1]) + return -EINVAL; + + set = nfset_get_byid(id); + if (set == NULL) + return -ENOENT; + + switch (mode) { + case __ADT_ADD: + write_lock_bh(&set->lock); + res = set->subtype->add(set, + NFA_DATA(tb[NFSET_ADT_DATA-1]), + tb[NFSET_ADT_DATA-1]->nfa_len, + flags); + write_unlock_bh(&set->lock); + break; + case __ADT_DEL: + write_lock_bh(&set->lock); + res = set->subtype->del(set, + NFA_DATA(tb[NFSET_ADT_DATA-1]), + tb[NFSET_ADT_DATA-1]->nfa_len, + flags); + write_unlock_bh(&set->lock); + break; + case __ADT_TEST: + read_lock_bh(&set->lock); + res = set->subtype->test(set, + NFA_DATA(tb[NFSET_ADT_DATA-1]), + tb[NFSET_ADT_DATA-1]->nfa_len, + flags); + read_unlock_bh(&set->lock); + break; + } + + nfset_put(set->id); + return res; +} + +static int +nfset_add(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp) +{ + return nfset_adt(ctnl, skb, nlh, tb, errp, __ADT_ADD); +} + +static int +nfset_del(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp) +{ + return nfset_adt(ctnl, skb, nlh, tb, errp, __ADT_DEL); +} + +static int +nfset_test(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp) +{ + return nfset_adt(ctnl, skb, nlh, tb, errp, __ADT_TEST); +} + +static int +nfset_adt_get(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp) +{ + char *name; + struct sk_buff *skb2; + struct nlmsghdr *nlh2; + unsigned char *b; + struct nf_set *set; + int ret = 0; + + if (!tb[NFSET_LIST_NAME-1]) + return -EINVAL; + name = NFA_DATA(tb[NFSET_LIST_NAME-1]); + name[NF_SET_MAXNAMELEN-1] = '\0'; + + set = nfset_get(name); + if (set == NULL) + return -ENOENT; + + skb2 = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL); + if (!skb2) { + ret = -ENOMEM; + goto alloc_failure; + } + b = skb2->tail; + + nlh2 = __nfset_nfnetlink_header(skb2); + if (!nlh2) { + ret = -ENOSPC; + goto nfattr_failure; + } + + NFA_PUT(skb2, NFSET_GET_ID, + sizeof(nf_set_id_t), + &set->id); + NFA_PUT(skb2, NFSET_GET_TYPENAME, + strlen(set->type->typename), + set->type->typename); + NFA_PUT(skb2, NFSET_GET_SUBTYPE_BASE, + sizeof(unsigned int), + &set->type->subtype_base); + NFA_PUT(skb2, NFSET_GET_SUBTYPE_NEXT, + sizeof(unsigned int), + &set->type->subtype_next); + + nlh2->nlmsg_len = skb2->tail - b; + + nfset_put(set->id); + + return netlink_unicast(ctnl, skb2, NETLINK_CB(skb).pid, MSG_DONTWAIT); + +nfattr_failure: + kfree_skb(skb2); +alloc_failure: + nfset_put(set->id); + return ret; +} + +static int +nfset_stats(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp) +{ + return 0; +} + +static int proto_to_attr(struct sk_buff *skb, struct nfset_proto *proto) +{ + struct nfattr *nest_parms; + + if (proto->flags & NFSET_FLAG_GEN) { + nest_parms = NFA_NEST(skb, NFSET_ATTR_HEADER_GENERAL); + if (proto->flags & NFSET_FLAG_GEN_SIZE) + NFA_PUT(skb, NFSET_ATTR_GENERAL_SIZE, + sizeof(proto->gen.size), + &proto->gen.size); + if (proto->flags & NFSET_FLAG_GEN_LIMIT) + NFA_PUT(skb, NFSET_ATTR_GENERAL_LIMIT, + sizeof(proto->gen.limit), + &proto->gen.limit); + if (proto->flags & NFSET_FLAG_GEN_TIMEOUT) + NFA_PUT(skb, NFSET_ATTR_GENERAL_TIMEOUT, + sizeof(proto->gen.timeout), + &proto->gen.timeout); + if (proto->flags & NFSET_FLAG_GEN_FLAGS) + NFA_PUT(skb, NFSET_ATTR_GENERAL_FLAGS, + sizeof(proto->gen.flags), + &proto->gen.flags); + NFA_NEST_END(skb, nest_parms); + } + if (proto->flags & NFSET_FLAG_L2) { + nest_parms = NFA_NEST(skb, NFSET_ATTR_HEADER_L2DATA); + if (proto->flags & NFSET_FLAG_L2_ETHER) + NFA_PUT(skb, NFSET_ATTR_L2_ETHERNET, + sizeof(proto->l2.ethernet), + &proto->l2.ethernet); + NFA_NEST_END(skb, nest_parms); + } + if (proto->flags & NFSET_FLAG_L3) { + nest_parms = NFA_NEST(skb, NFSET_ATTR_HEADER_L3DATA); + NFA_PUT(skb, NFSET_ATTR_L3_PROTONUM, + sizeof(proto->l3.protonum), + &proto->l3.protonum); + if (proto->l3.protonum == AF_INET) { + if (proto->flags & NFSET_FLAG_L3_FROM) + NFA_PUT(skb, NFSET_ATTR_L3_IPV4_FROM, + sizeof(proto->l3.from.ipv4), + &proto->l3.from.ipv4); + if (proto->flags & NFSET_FLAG_L3_TO) + NFA_PUT(skb, NFSET_ATTR_L3_IPV4_TO, + sizeof(proto->l3.to.ipv4), + &proto->l3.to.ipv4); + } else { + if (proto->flags & NFSET_FLAG_L3_FROM) + NFA_PUT(skb, NFSET_ATTR_L3_IPV6_FROM, + sizeof(proto->l3.from.ipv6), + &proto->l3.from.ipv6); + if (proto->flags & NFSET_FLAG_L3_TO) + NFA_PUT(skb, NFSET_ATTR_L3_IPV6_TO, + sizeof(proto->l3.to.ipv6), + &proto->l3.to.ipv6); + } + if (proto->flags & NFSET_FLAG_L3_MASK) + NFA_PUT(skb, NFSET_ATTR_L3_MASK, + sizeof(proto->l3.mask), + &proto->l3.mask); + NFA_NEST_END(skb, nest_parms); + } + if (proto->flags & NFSET_FLAG_L4) { + nest_parms = NFA_NEST(skb, NFSET_ATTR_HEADER_L4DATA); + if (proto->flags & NFSET_FLAG_L4_FROM) + NFA_PUT(skb, NFSET_ATTR_L4_FROM, + sizeof(proto->l4.from), + &proto->l4.from); + if (proto->flags & NFSET_FLAG_L4_TO) + NFA_PUT(skb, NFSET_ATTR_L4_TO, + sizeof(proto->l4.to), + &proto->l4.to); + NFA_NEST_END(skb, nest_parms); + } + return 0; + +nfattr_failure: + + return -1; +} + +static int list_done(struct netlink_callback *cb) +{ + DP("entered %s\n", __FUNCTION__); + + write_lock_bh(&nfset_list_lock); + kfree(nfset_list_ids); + nfset_list_ids = NULL; + nfset_list_id = NF_SET_INVALID_ID; + write_unlock_bh(&nfset_list_lock); + return 0; +} + +static int +list_dump(struct sk_buff *skb, struct netlink_callback *cb) +{ + struct nlmsghdr *nlh; + unsigned char *b; + int len; + nf_set_id_t i; + struct nf_set *set = NULL; + + b = skb->tail; + nlh = __nfset_nfnetlink_header(skb); + + for (i = nfset_list_id; i < nf_set_max && !set; i++) { + if (nfset_list_ids[i] != NF_SET_INVALID_ID) + /* We siletly ignore deleted sets */ + set = nfset_get_byid(nfset_list_ids[i]); + } + if (!set) + return -1; + + nfset_list_id = i; + if (!cb->args[0]) { + struct nfset_proto proto = {}; + + set->subtype->list_header(set, &proto); + proto_to_attr(skb, &proto); + cb->args[0] = 1; + goto header_listed; + } + read_lock_bh(&set->lock); + len = set->subtype->list_members(set, list_buffer, NFSET_BUFFER_LEN, + cb->args); + read_unlock_bh(&set->lock); + NFA_PUT(skb, NFSET_LIST_DATA, len, list_buffer); + +header_listed: + nlh->nlmsg_len = skb->tail - b; + nfset_put(set->id); + + return skb->len; + +nfattr_failure: + nfset_put(set->id); + return -1; +} + +static int +nfset_list(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp) +{ + int ret = 0; + nf_set_id_t i; + + write_lock_bh(&nfset_list_lock); + if (nfset_list_id != NF_SET_INVALID_ID) { + ret = -EBUSY; + goto failure; + } + nfset_list_ids = kmalloc(nf_set_max * sizeof(nf_set_id_t), GFP_ATOMIC); + if (!nfset_list_ids) { + ret = -ENOMEM; + goto failure; + } + write_unlock_bh(&nfset_list_lock); + read_lock_bh(&nf_set_lock); + for (i = 0; i < nf_set_max; i++) + nfset_list_ids[i] = nf_set_list[i] ? nf_set_list[i]->id + : NF_SET_INVALID_ID; + nfset_list_id = 0; /* index in nfset_list_ids! */ + read_unlock_bh(&nf_set_lock); + + return netlink_dump_start(ctnl, skb, nlh, + list_dump, + list_done); + +failure: + write_unlock_bh(&nfset_list_lock); + return ret; +} + +static int list_set_done(struct netlink_callback *cb) +{ + DP("entered %s\n", __FUNCTION__); + + write_lock_bh(&nfset_list_lock); + nfset_list_id = NF_SET_INVALID_ID; + write_unlock_bh(&nfset_list_lock); + return 0; +} + +static int +list_set_dump(struct sk_buff *skb, struct netlink_callback *cb) +{ + struct nlmsghdr *nlh; + unsigned char *b; + int len; + struct nf_set *set; + + set = nfset_get_byid(nfset_list_id); + if (!set) + return -1; + + b = skb->tail; + nlh = __nfset_nfnetlink_header(skb); + if (!cb->args[0]) { + struct nfset_proto proto = {}; + + set->subtype->list_header(set, &proto); + proto_to_attr(skb, &proto); + cb->args[0] = 1; + goto header_listed; + } + + read_lock_bh(&set->lock); + len = set->subtype->list_members(set, list_buffer, NFSET_BUFFER_LEN, + cb->args); + read_unlock_bh(&set->lock); + NFA_PUT(skb, NFSET_LIST_DATA, len, list_buffer); + +header_listed: + nlh->nlmsg_len = skb->tail - b; + nfset_put(set->id); + + return skb->len; + +nfattr_failure: + nfset_put(set->id); + return -1; +} + +static int +nfset_list_set(struct sock *ctnl, struct sk_buff *skb, + struct nlmsghdr *nlh, struct nfattr *tb[], int *errp) +{ + char *name; + struct nf_set *set; + int ret = 0; + + if (!tb[NFSET_LIST_NAME-1]) + return -EINVAL; + name = NFA_DATA(tb[NFSET_LIST_NAME-1]); + name[NF_SET_MAXNAMELEN-1] = '\0'; + + set = nfset_get(name); + if (set == NULL) + return -ENOENT; + nfset_list_id = set->id; + nfset_put(set->id); + + write_lock_bh(&nfset_list_lock); + if (nfset_list_id == NF_SET_INVALID_ID) + nfset_list_id = set->id; + else { + ret = -EBUSY; + goto failure; + } + write_unlock_bh(&nfset_list_lock); + + return netlink_dump_start(ctnl, skb, nlh, + list_set_dump, + list_set_done); + +failure: + write_unlock_bh(&nfset_list_lock); + return ret; +} + +static struct nfnl_callback nfset_cb[NLSET_MSG_MAX] = { + [NLSET_OP_CREATE] = { .call = nfset_create, + .attr_count = NFSET_CREATE_MAX }, + [NLSET_OP_DESTROY] = { .call = nfset_destroy, + .attr_count = NFSET_LIST_MAX }, + [NLSET_OP_FLUSH] = { .call = nfset_flush, + .attr_count = NFSET_LIST_MAX }, + [NLSET_OP_RENAME] = { .call = nfset_rename, + .attr_count = NFSET_RENAME_MAX }, + [NLSET_OP_SWAP] = { .call = nfset_swap, + .attr_count = NFSET_RENAME_MAX }, + [NLSET_OP_ADT_GET] = { .call = nfset_adt_get, + .attr_count = NFSET_LIST_MAX }, + [NLSET_OP_ADD] = { .call = nfset_add, + .attr_count = NFSET_ADT_MAX }, + [NLSET_OP_DEL] = { .call = nfset_del, + .attr_count = NFSET_ADT_MAX }, + [NLSET_OP_TEST] = { .call = nfset_test, + .attr_count = NFSET_ADT_MAX }, + [NLSET_OP_LIST_SET] = { .call = nfset_list_set, + .attr_count = NFSET_LIST_MAX }, + [NLSET_OP_LIST] = { .call = nfset_list, + .attr_count = 0 }, + [NLSET_OP_STATS] = { .call = nfset_stats, + .attr_count = 0 }, +}; + +static struct nfnetlink_subsystem nfset_subsys = { + .name = "nf_set", + .subsys_id = NFNL_SUBSYS_SET, + .cb_count = NLSET_MSG_MAX, + .cb = nfset_cb +}; + +MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_SET); + +static int max_sets; +module_param(max_sets, int, 0600); +MODULE_PARM_DESC(max_sets, "maximal number of sets"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jozsef Kadlecsik "); +MODULE_DESCRIPTION("module implementing core set support"); + +static int __init init(void) +{ + int ret = 0; + + get_random_bytes(&nf_set_hash_random, 4); + if (max_sets) + nf_set_max = max_sets; + nf_set_list = vmalloc(sizeof(struct nf_set *) * nf_set_max); + if (!nf_set_list) { + printk(KERN_ERR "Unable to create nf_set_list\n"); + return -ENOMEM; + } + memset(nf_set_list, 0, sizeof(struct nf_set *) * nf_set_max); + + INIT_LIST_HEAD(&set_type_list); + + ret = nfnetlink_subsys_register(&nfset_subsys); + if (ret < 0) { + printk("init: cannot register with nfnetlink.\n"); + vfree(nf_set_list); + } + printk("nf_set v.%s\n", version); + return ret; +} + +static void __exit fini(void) +{ + /* There can't be any existing set */ + nfnetlink_subsys_unregister(&nfset_subsys); + vfree(nf_set_list); + DP("these are the famous last words"); +} + +EXPORT_SYMBOL(nf_set_register_set_type); +EXPORT_SYMBOL(nf_set_unregister_set_type); + +EXPORT_SYMBOL(nf_set_get_byname); +EXPORT_SYMBOL(nf_set_put_byindex); + +EXPORT_SYMBOL(nf_set_add_kernel); +EXPORT_SYMBOL(nf_set_del_kernel); +EXPORT_SYMBOL(nf_set_test_kernel); + +module_init(init); +module_exit(fini); diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/netfilter/nf_set_iphash.c linux-2.6.15.3-nfset/net/netfilter/nf_set_iphash.c --- linux-2.6.15.3-orig/net/netfilter/nf_set_iphash.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/net/netfilter/nf_set_iphash.c 2006-03-13 19:36:34.000000000 +0100 @@ -0,0 +1,264 @@ +/* Copyright (C) 2003-2004 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* Kernel module implementing an ip hash set */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +static unsigned int cache_id; + +static inline int +__testip(struct nf_set *set, nf_set_ip_t ip) +{ + struct nf_set_iphash *map = (struct nf_set_iphash *) set->data; + nf_set_ip_t haship = ip & map->netmask; + + DP("set: %s, ip:%u.%u.%u.%u, mask:%u.%u.%u.%u %u.%u.%u.%u", + set->name, HIPQUAD(ip), HIPQUAD(map->netmask), HIPQUAD(haship)); + return __iphash_testip(&map->map, haship); +} + +static int +testip(struct nf_set *set, const void *data, size_t size, unsigned int flags) +{ + nf_set_ip_t *ip = (nf_set_ip_t *) data; + + return __testip(set, ip[0]); +} + +static int +testip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + return __testip(set, + ntohl(flags[0] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr)); +} + +static inline int +__addip(struct nf_set *set, nf_set_ip_t ip) +{ + struct nf_set_iphash *map = (struct nf_set_iphash *) set->data; + nf_set_ip_t haship = ip & map->netmask; + + DP("set: %s, ip:%u.%u.%u.%u, mask:%u.%u.%u.%u %u.%u.%u.%u", + set->name, HIPQUAD(ip), HIPQUAD(map->netmask), HIPQUAD(haship)); + return __iphash_addip(cache_id, &map->map, haship); +} + +static int +addip(struct nf_set *set, const void *data, size_t size, unsigned int flags) +{ + nf_set_ip_t *ip = (nf_set_ip_t *) data; + unsigned int i, len; + int ret = 0; + + for (i = 0, len = 0; len < size; i++, len += sizeof(nf_set_ip_t)) { + ret = __addip(set, ip[i]); + if (ret && !(flags & NFSET_IGNORE_ERRORS)) + return ret; + } + return ret; +} + +static int +addip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + return __addip(set, + ntohl(flags[0] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr)); +} + +static inline int +__delip(struct nf_set *set, nf_set_ip_t ip) +{ + struct nf_set_iphash *map = (struct nf_set_iphash *) set->data; + nf_set_ip_t haship = ip & map->netmask; + + DP("set: %s, ip:%u.%u.%u.%u, mask:%u.%u.%u.%u %u.%u.%u.%u", + set->name, HIPQUAD(ip), HIPQUAD(map->netmask), HIPQUAD(haship)); + return __iphash_delip(cache_id, &map->map, haship); +} + +static int +delip(struct nf_set *set, const void *data, size_t size, unsigned int flags) +{ + nf_set_ip_t *ip = (nf_set_ip_t *) data; + unsigned int i; + int ret = 0; + + for (i = 0; i < size; i += sizeof(nf_set_ip_t)) { + ret = __delip(set, ip[i]); + if (ret && !(flags & NFSET_IGNORE_ERRORS)) + return ret; + } + return ret; +} + +static int +delip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + return __delip(set, + ntohl(flags[0] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr)); +} + +static int create(struct nf_set *set, const struct nfset_proto *data) +{ + struct nf_set_iphash *map; + + if (!(data->flags & set->subtype->flags)) + return -EINVAL; + + if (data->gen.size < 1) { + nf_set_printk("hashsize too small"); + return -ENOEXEC; + } + if (data->gen.limit < 1) { + nf_set_printk("limit too small"); + return -ENOEXEC; + } + + map = kmalloc(sizeof(struct nf_set_iphash) + + data->gen.size * sizeof(struct iphash *), GFP_KERNEL); + if (!map) { + DP("out of memory for %d bytes", + sizeof(struct nf_set_iphash) + + data->gen.size * sizeof(struct iphash *)); + return -ENOMEM; + } + memset(map, 0, + sizeof(struct nf_set_iphash) + + data->gen.size * sizeof(struct iphash *)); + map->netmask = data->l3.mask; + + map->map.hashsize = data->gen.size; + map->map.limit = data->gen.limit; + get_random_bytes(&map->map.initval, 4); + + set->data = map; + return 0; +} + +static void destroy(struct nf_set *set) +{ + struct nf_set_iphash *map = (struct nf_set_iphash *) set->data; + + __iphash_destroy(cache_id, &map->map); + kfree(map); + set->data = NULL; +} + +static void flush(struct nf_set *set) +{ + struct nf_set_iphash *map = (struct nf_set_iphash *) set->data; + + __iphash_flush(cache_id, &map->map); +} + +static void list_header(const struct nf_set *set, struct nfset_proto *data) +{ + struct nf_set_iphash *map = (struct nf_set_iphash *) set->data; + + data->flags = set->subtype->flags; + data->gen.size = map->map.hashsize; + data->gen.limit = map->map.limit; + data->l3.mask = map->netmask; +} + +static int list_members(const struct nf_set *set, void *buffer, int len, + long args[5]) +{ + struct nf_set_iphash *map = (struct nf_set_iphash *) set->data; + nf_set_id_t *ip = (nf_set_id_t *) buffer; + int size; + __u32 i; + + for (size = 0, i = 0; + args[1] < map->map.hashsize && size < len; + args[1]++, i++) { + /* TODO */ + ip[args[1]] = 0; + } + + return size; +} + +static struct nf_set_type nf_set_iphash = { + .typename = SETTYPE_NAME, + .features = NFSET_TYPE_IP | NFSET_TYPE_SINGLE, + .subtype_base = 0, + .subtype_next = 1, + .me = THIS_MODULE, + .subtypes = { + [0] = { + .create = &create, + .flags = (NFSET_FLAG_GEN_SIZE + | NFSET_FLAG_GEN_LIMIT + | NFSET_FLAG_L3_MASK), + .destroy = &destroy, + .flush = &flush, + .add = &addip, + .add_kernel = &addip_kernel, + .del = &delip, + .del_kernel = &delip_kernel, + .test = &testip, + .test_kernel = &testip_kernel, + .list_header = &list_header, + .list_members = &list_members, + }, + }, +}; + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jozsef Kadlecsik "); +MODULE_DESCRIPTION("iphash type of IP sets"); + +static int __init init(void) +{ + int ret; + + ret = nf_set_cache_create(sizeof(struct iphash), &cache_id); + if (ret) { + printk(KERN_ERR "Unable to create slab cache for nf_set_iphash\n"); + return ret; + } + ret = nf_set_register_set_type(&nf_set_iphash); + if (ret) + nf_set_cache_destroy(cache_id); + + return ret; +} + +static void __exit fini(void) +{ + /* FIXME: possible race with nf_set_create() */ + nf_set_unregister_set_type(&nf_set_iphash); + nf_set_cache_destroy(cache_id); +} + +module_init(init); +module_exit(fini); diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/netfilter/nf_set_ipmap.c linux-2.6.15.3-nfset/net/netfilter/nf_set_ipmap.c --- linux-2.6.15.3-orig/net/netfilter/nf_set_ipmap.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/net/netfilter/nf_set_ipmap.c 2006-03-13 14:50:31.000000000 +0100 @@ -0,0 +1,314 @@ +/* Copyright (C) 2000-2002 Joakim Axelsson + * Patrick Schaaf + * Copyright (C) 2003-2004 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* Kernel module implementing an IP set type: the single bitmap type */ + +#include +#include +#include +#include +#include +#include + +#include +#include + +static inline nf_set_ip_t +ip_to_id(const struct nf_set_ipmap *map, nf_set_ip_t ip) +{ + return (ip - map->first_ip)/map->hosts; +} + +static inline int +__testip(struct nf_set *set, nf_set_ip_t ip) +{ + struct nf_set_ipmap *map = (struct nf_set_ipmap *) set->data; + + if (ip < map->first_ip || ip > map->last_ip) + return -ERANGE; + + DP("set: %s, ip:%u.%u.%u.%u, mask:%u.%u.%u.%u %u.%u.%u.%u", + set->name, HIPQUAD(ip), HIPQUAD(map->netmask), HIPQUAD(ip & map->netmask)); + return !!test_bit(ip_to_id(map, ip & map->netmask), map->members); +} + +static int +testip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_ipmap *req = + (struct nf_set_req_ipmap *) data; + + if (size != sizeof(struct nf_set_req_ipmap)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_ipmap), + size); + return -EINVAL; + } + return __testip(set, req->ip); +} + +static int +testip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + int res; + + DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u", + flags[index] & NFSET_SRC ? "SRC" : "DST", + NIPQUAD(skb->nh.iph->saddr), + NIPQUAD(skb->nh.iph->daddr)); + + res = __testip(set, + ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr)); + return (res < 0 ? 0 : res); +} + +static inline int +__addip(struct nf_set *set, nf_set_ip_t ip) +{ + struct nf_set_ipmap *map = (struct nf_set_ipmap *) set->data; + + if (ip < map->first_ip || ip > map->last_ip) + return -ERANGE; + + DP("set: %s, ip:%u.%u.%u.%u, mask:%u.%u.%u.%u %u.%u.%u.%u", + set->name, HIPQUAD(ip), HIPQUAD(map->netmask), HIPQUAD(ip & map->netmask)); + if (test_and_set_bit(ip_to_id(map, ip & map->netmask), map->members)) + return -EEXIST; + + return 0; +} + +static int +addip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_ipmap *req = + (struct nf_set_req_ipmap *) data; + + if (size != sizeof(struct nf_set_req_ipmap)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_ipmap), + size); + return -EINVAL; + } + DP("%u.%u.%u.%u", HIPQUAD(req->ip)); + return __addip(set, req->ip); +} + +static int +addip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + return __addip(set, + ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr)); +} + +static inline int +__delip(struct nf_set *set, nf_set_ip_t ip) +{ + struct nf_set_ipmap *map = (struct nf_set_ipmap *) set->data; + + if (ip < map->first_ip || ip > map->last_ip) + return -ERANGE; + + DP("set: %s, ip:%u.%u.%u.%u, mask:%u.%u.%u.%u %u.%u.%u.%u", + set->name, HIPQUAD(ip), HIPQUAD(map->netmask), HIPQUAD(ip & map->netmask)); + if (!test_and_clear_bit(ip_to_id(map, ip & map->netmask), map->members)) + return -EEXIST; + + return 0; +} + +static int +delip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_ipmap *req = + (struct nf_set_req_ipmap *) data; + + if (size != sizeof(struct nf_set_req_ipmap)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_ipmap), + size); + return -EINVAL; + } + return __delip(set, req->ip); +} + +static int +delip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + return __delip(set, + ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr)); +} + +static int create(struct nf_set *set, const void *data, size_t size) +{ + int newbytes; + struct nf_set_req_ipmap_create *req = + (struct nf_set_req_ipmap_create *) data; + struct nf_set_ipmap *map; + + if (size != sizeof(struct nf_set_req_ipmap_create)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_ipmap_create), + size); + return -EINVAL; + } + + DP("from %u.%u.%u.%u to %u.%u.%u.%u", + HIPQUAD(req->from), HIPQUAD(req->to)); + + if (req->from > req->to) { + DP("bad ip range"); + return -ENOEXEC; + } + + map = kmalloc(sizeof(struct nf_set_ipmap), GFP_KERNEL); + if (!map) { + DP("out of memory for %d bytes", + sizeof(struct nf_set_ipmap)); + return -ENOMEM; + } + map->first_ip = req->from; + map->last_ip = req->to; + 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; + nf_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) { + nf_set_printk("range too big (max %d addresses)", + MAX_RANGE+1); + kfree(map); + return -ENOEXEC; + } + DP("hosts %u, sizeid %u", map->hosts, map->sizeid); + newbytes = bitmap_bytes(0, map->sizeid - 1); + map->members = kmalloc(newbytes, GFP_KERNEL); + if (!map->members) { + DP("out of memory for %d bytes", newbytes); + kfree(map); + return -ENOMEM; + } + memset(map->members, 0, newbytes); + + set->data = map; + return 0; +} + +static void destroy(struct nf_set *set) +{ + struct nf_set_ipmap *map = (struct nf_set_ipmap *) set->data; + + kfree(map->members); + kfree(map); + + set->data = NULL; +} + +static void flush(struct nf_set *set) +{ + struct nf_set_ipmap *map = (struct nf_set_ipmap *) set->data; + memset(map->members, 0, bitmap_bytes(0, map->sizeid - 1)); +} + +static void list_header(const struct nf_set *set, void *data) +{ + struct nf_set_ipmap *map = (struct nf_set_ipmap *) set->data; + struct nf_set_req_ipmap_create *header = + (struct nf_set_req_ipmap_create *) data; + + header->from = map->first_ip; + header->to = map->last_ip; + header->netmask = map->netmask; +} + +static int list_members_size(const struct nf_set *set) +{ + struct nf_set_ipmap *map = (struct nf_set_ipmap *) set->data; + + return bitmap_bytes(0, map->sizeid - 1); +} + +static void list_members(const struct nf_set *set, void *data) +{ + struct nf_set_ipmap *map = (struct nf_set_ipmap *) set->data; + int bytes = bitmap_bytes(0, map->sizeid - 1); + + memcpy(data, map->members, bytes); +} + +static struct nf_set_type nf_set_ipmap = { + .typename = SETTYPE_NAME, + .features = IPSET_TYPE_IP | IPSET_TYPE_SINGLE, + .subtype_base = 0, + .subtype_next = 1, + .me = THIS_MODULE, + .subtypes = { + [0] = { + .create = &create, + .destroy = &destroy, + .flush = &flush, + .reqsize = sizeof(struct nf_set_req_ipmap), + .addip = &addip, + .addip_kernel = &addip_kernel, + .delip = &delip, + .delip_kernel = &delip_kernel, + .testip = &testip, + .testip_kernel = &testip_kernel, + .list = &list, + }, + }, +}; + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jozsef Kadlecsik "); +MODULE_DESCRIPTION("ipmap type of IP sets"); + +static int __init init(void) +{ + return nf_set_register_set_type(&nf_set_ipmap); +} + +static void __exit fini(void) +{ + /* FIXME: possible race with nf_set_create() */ + nf_set_unregister_set_type(&nf_set_ipmap); +} + +module_init(init); +module_exit(fini); diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/netfilter/nf_set_ipporthash.c linux-2.6.15.3-nfset/net/netfilter/nf_set_ipporthash.c --- linux-2.6.15.3-orig/net/netfilter/nf_set_ipporthash.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/net/netfilter/nf_set_ipporthash.c 2006-03-08 23:39:18.000000000 +0100 @@ -0,0 +1,388 @@ +/* Copyright (C) 2003-2004 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* Kernel module implementing an ip+port hash set */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include +#include + +static unsigned int cache_id; + +/* We must handle non-linear skbs */ +static inline nf_set_ip_t +get_port(const struct sk_buff *skb, u_int32_t flags) +{ + struct iphdr *iph = skb->nh.iph; + 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, skb->nh.iph->ihl*4, &tcph, sizeof(tcph)) < 0) + /* No choice either */ + return INVALID_PORT; + + return ntohs(flags & NFSET_SRC ? + tcph.source : tcph.dest); + } + case IPPROTO_UDP: { + struct udphdr udph; + + if (offset) + return INVALID_PORT; + + if (skb_copy_bits(skb, skb->nh.iph->ihl*4, &udph, sizeof(udph)) < 0) + /* No choice either */ + return INVALID_PORT; + + return ntohs(flags & NFSET_SRC ? + udph.source : udph.dest); + } + default: + return INVALID_PORT; + } +} + +#define HASH_IP(map, ip, port) (port + ((ip - ((map)->first_ip)) << 16)) + +static inline int +__testip(struct nf_set *set, nf_set_ip_t ip, nf_set_ip_t port) +{ + struct nf_set_ipporthash *map = (struct nf_set_ipporthash *) set->data; + nf_set_ip_t hash_ip; + + if (ip < map->first_ip || ip > map->last_ip) + return -ERANGE; + + hash_ip = HASH_IP(map, ip, port); + DP("set: %s, ipport:%u.%u.%u.%u:%u, %u.%u.%u.%u", + set->name, HIPQUAD(ip), port, HIPQUAD(hash_ip)); + + return __iphash_testip(&map->map, hash_ip); +} + +static int +testip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_ipporthash *req = + (struct nf_set_req_ipporthash *) data; + + if (size != sizeof(struct nf_set_req_ipporthash)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_ipporthash), + size); + return -EINVAL; + } + return __testip(set, req->ip, req->port); +} + +static int +testip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + nf_set_ip_t port; + + if (flags[index+1] == 0) + return -EINVAL; + + port = get_port(skb, flags[index+1]); + + DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u", + flags[index] & NFSET_SRC ? "SRC" : "DST", + NIPQUAD(skb->nh.iph->saddr), + NIPQUAD(skb->nh.iph->daddr)); + DP("flag %s port %u", + flags[index+1] & NFSET_SRC ? "SRC" : "DST", + port); + if (port == INVALID_PORT) + return 0; + + return __testip(set, + ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr), + port); +} + +static inline int +__addip(struct nf_set *set, nf_set_ip_t ip, nf_set_ip_t port) +{ + struct nf_set_ipporthash *map = + (struct nf_set_ipporthash *) set->data; + nf_set_ip_t hash_ip; + + if (ip < map->first_ip || ip > map->last_ip) + return -ERANGE; + + hash_ip = HASH_IP(map, ip, port); + DP("set: %s, ipport:%u.%u.%u.%u:%u, %u.%u.%u.%u", + set->name, HIPQUAD(ip), port, HIPQUAD(hash_ip)); + + return __iphash_addip(cache_id, &map->map, hash_ip); +} + +static int +addip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_ipporthash *req = + (struct nf_set_req_ipporthash *) data; + + if (size != sizeof(struct nf_set_req_ipporthash)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_ipporthash), + size); + return -EINVAL; + } + return __addip(set, req->ip, req->port); +} + +static int +addip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + nf_set_ip_t port; + + if (flags[index+1] == 0) + return -EINVAL; + + port = get_port(skb, flags[index+1]); + + DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u", + flags[index] & NFSET_SRC ? "SRC" : "DST", + NIPQUAD(skb->nh.iph->saddr), + NIPQUAD(skb->nh.iph->daddr)); + DP("flag %s port %u", + flags[index+1] & NFSET_SRC ? "SRC" : "DST", + port); + if (port == INVALID_PORT) + return -EINVAL; + + return __addip(set, + ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr), + port); +} + +static inline int +__delip(struct nf_set *set, nf_set_ip_t ip, nf_set_ip_t port) +{ + struct nf_set_ipporthash *map = (struct nf_set_ipporthash *) set->data; + nf_set_ip_t hash_ip; + + if (ip < map->first_ip || ip > map->last_ip) + return -ERANGE; + + hash_ip = HASH_IP(map, ip, port); + DP("set: %s, ipport:%u.%u.%u.%u:%u, %u.%u.%u.%u", + set->name, HIPQUAD(ip), port, HIPQUAD(hash_ip)); + + return __iphash_delip(cache_id, &map->map, hash_ip); +} + +static int +delip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_ipporthash *req = + (struct nf_set_req_ipporthash *) data; + + if (size != sizeof(struct nf_set_req_ipporthash)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_ipporthash), + size); + return -EINVAL; + } + return __delip(set, req->ip, req->port); +} + +static int +delip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + nf_set_ip_t port; + + if (flags[index+1] == 0) + return -EINVAL; + + port = get_port(skb, flags[index+1]); + + DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u", + flags[index] & NFSET_SRC ? "SRC" : "DST", + NIPQUAD(skb->nh.iph->saddr), + NIPQUAD(skb->nh.iph->daddr)); + DP("flag %s port %u", + flags[index+1] & NFSET_SRC ? "SRC" : "DST", + port); + if (port == INVALID_PORT) + return -EINVAL; + + return __delip(set, + ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr), + port); +} + +static int create(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_ipporthash_create *req = + (struct nf_set_req_ipporthash_create *) data; + struct nf_set_ipporthash *map; + + if (size != sizeof(struct nf_set_req_ipporthash_create)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_ipporthash_create), + size); + return -EINVAL; + } + + if (req->hashsize < 1) { + nf_set_printk("hashsize too small"); + return -ENOEXEC; + } + + if (req->limit < 1) { + nf_set_printk("limit too small"); + return -ENOEXEC; + } + + map = kmalloc(sizeof(struct nf_set_ipporthash) + + req->hashsize * sizeof(struct iphash *), GFP_KERNEL); + if (!map) { + DP("out of memory for %d bytes", + sizeof(struct nf_set_ipporthash) + + req->hashsize * sizeof(struct iphash *)); + return -ENOMEM; + } + memset(map, 0, + sizeof(struct nf_set_ipporthash) + + req->hashsize * sizeof(struct iphash *)); + map->first_ip = req->from; + map->last_ip = req->to; + map->map.hashsize = req->hashsize; + map->map.limit = req->limit; + get_random_bytes(&map->map.initval, 4); + + set->data = map; + return 0; +} + +static void destroy(struct nf_set *set) +{ + struct nf_set_ipporthash *map = (struct nf_set_ipporthash *) set->data; + + __iphash_destroy(cachep_id, &map->map); + kfree(map); + + set->data = NULL; +} + +static void flush(struct nf_set *set) +{ + struct nf_set_ipporthash *map = (struct nf_set_ipporthash *) set->data; + + __iphash_flush(cache_id, &map->map); +} + +static void list_header(const struct nf_set *set, void *data) +{ + struct nf_set_ipporthash *map = (struct nf_set_ipporthash *) set->data; + struct nf_set_req_ipporthash_create *header = + (struct nf_set_req_ipporthash_create *) data; + + header->hashsize = map->map.hashsize; + header->limit = map->map.limit; + header->from = map->first_ip; + header->to = map->last_ip; +} + +static int list_members_size(const struct nf_set *set) +{ + struct nf_set_ipporthash *map = (struct nf_set_ipporthash *) set->data; + + return (map->map.count * sizeof(nf_set_ip_t)); +} + +static void list_members(const struct nf_set *set, void *data) +{ + struct nf_set_ipporthash *map = (struct nf_set_ipporthash *) set->data; + + __iphash_list_members(&map->map, data); +} + +static struct nf_set_type nf_set_ipporthash = { + .typename = SETTYPE_NAME, + .features = NFSET_TYPE_IP | NFSET_TYPE_PORT | NFSET_TYPE_DOUBLE, + .subtype_base = 0, + .subtype_next = 1, + .me = THIS_MODULE, + .subtypes = { + [0] = { + .create = &create, + .destroy = &destroy, + .flush = &flush, + .reqsize = sizeof(struct nf_set_req_ipporthash), + .addip = &addip, + .addip_kernel = &addip_kernel, + .delip = &delip, + .delip_kernel = &delip_kernel, + .testip = &testip, + .testip_kernel = &testip_kernel, + .list = &list, + }, + }, +}; + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jozsef Kadlecsik "); +MODULE_DESCRIPTION("ipporthash type of IP sets"); + +static int __init init(void) +{ + int ret; + + ret = nf_set_cache_create(sizeof(struct iphash, &cache_id); + if (ret) { + printk(KERN_ERR "Unable to create slab cache for nf_set_iphash\n"); + return ret; + } + ret = nf_set_register_set_type(&nf_set_ipporthash); + if (ret) + nf_set_cache_destroy(cache_id); + + return ret; +} + +static void __exit fini(void) +{ + /* FIXME: possible race with nf_set_create() */ + nf_set_unregister_set_type(&nf_set_ipporthash); + nf_set_cache_destroy(cache_id); +} + +module_init(init); +module_exit(fini); diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/netfilter/nf_set_iptree.c linux-2.6.15.3-nfset/net/netfilter/nf_set_iptree.c --- linux-2.6.15.3-orig/net/netfilter/nf_set_iptree.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/net/netfilter/nf_set_iptree.c 2006-03-09 00:21:15.000000000 +0100 @@ -0,0 +1,526 @@ +/* Copyright (C) 2005 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* Kernel module implementing an IP set type: the iptree type */ + +#include +#include +#include +#include +#include +#include + +#include + +/* 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 unsigned int branch_cache_id; +static unsigned int leaf_cache_id; + +#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) + +#define TESTIP_WALK(map, elem, branch) do { \ + if ((map)->tree[elem]) { \ + branch = (map)->tree[elem]; \ + } else \ + return 0; \ +} while (0) + +static inline int +__testip(struct nf_set *set, nf_set_nf_t ip) +{ + struct nf_set_iptree *map = (struct nf_set_iptree *) set->data; + struct nf_set_iptreeb *btree; + struct nf_set_iptreec *ctree; + struct nf_set_iptreed *dtree; + unsigned char a,b,c,d; + + ABCD(a, b, c, d, &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 !!(map->timeout ? (time_after(dtree->expires[d], jiffies)) + : dtree->expires[d]); +} + +static int +testip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_iptree *req = + (struct nf_set_req_iptree *) data; + + if (size != sizeof(struct nf_set_req_iptree)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_iptree), + size); + return -EINVAL; + } + return __testip(set, req->ip); +} + +static int +testip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + int res; + + DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u", + flags[index] & NFSET_SRC ? "SRC" : "DST", + NIPQUAD(skb->nh.iph->saddr), + NIPQUAD(skb->nh.iph->daddr)); + + res = __testip(set, + ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr)); + return (res < 0 ? 0 : res); +} + +#define ADDIP_WALK(map, elem, branch, type, cache_id, flags) do { \ + if ((map)->tree[elem]) { \ + DP("found %u", elem); \ + branch = (map)->tree[elem]; \ + } else { \ + branch = (type *) \ + nf_set_cache_alloc(cache_id, flags); \ + if (branch == NULL) \ + return -ENOMEM; \ + memset(branch, 0, sizeof(*branch)); \ + (map)->tree[elem] = branch; \ + DP("alloc %u", elem); \ + } \ +} while (0) + +static inline int +__addip(struct nf_set *set, nf_set_nf_t ip, unsigned int timeout, + gfp_t flags) +{ + struct nf_set_iptree *map = (struct nf_set_iptree *) set->data; + struct nf_set_iptreeb *btree; + struct nf_set_iptreec *ctree; + struct nf_set_iptreed *dtree; + unsigned char a,b,c,d; + int ret = 0; + + if (map->count >= map->limit) + return -EOVERFLOW; + + ABCD(a, b, c, d, &ip); + DP("%u %u %u %u timeout %u", a, b, c, d, timeout); + ADDIP_WALK(map, a, btree, struct nf_set_iptreeb, branch_cache_id, flags); + ADDIP_WALK(btree, b, ctree, struct nf_set_iptreec, branch_cache_id, flags); + ADDIP_WALK(ctree, c, dtree, struct nf_set_iptreed, leaf_cache_id, flags); + if (dtree->expires[d] + && (!map->timeout || time_after(dtree->expires[d], jiffies))) + ret = -EEXIST; + dtree->expires[d] = map->timeout ? (timeout * HZ + jiffies) : 1; + /* Lottery */ + if (dtree->expires[d] == 0) + dtree->expires[d] = 1; + DP("%u %lu", d, dtree->expires[d]); + return ret; +} + +static int +addip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_iptree *map = (struct nf_set_iptree *) set->data; + struct nf_set_req_iptree *req = + (struct nf_set_req_iptree *) data; + + if (size != sizeof(struct nf_set_req_iptree)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_iptree), + size); + return -EINVAL; + } + DP("%u.%u.%u.%u %u", HIPQUAD(req->ip), req->timeout); + return __addip(set, req->ip, + req->timeout ? req->timeout : map->timeout, + GFP_ATOMIC); +} + +static int +addip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + struct nf_set_iptree *map = (struct nf_set_iptree *) set->data; + + return __addip(set, + ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr), + map->timeout, + GFP_ATOMIC); +} + +#define DELIP_WALK(map, elem, branch) do { \ + if ((map)->tree[elem]) { \ + branch = (map)->tree[elem]; \ + } else \ + return -EEXIST; \ +} while (0) + +static inline int +__delip(struct nf_set *set, nf_set_nf_t ip) +{ + struct nf_set_iptree *map = (struct nf_set_iptree *) set->data; + struct nf_set_iptreeb *btree; + struct nf_set_iptreec *ctree; + struct nf_set_iptreed *dtree; + unsigned char a,b,c,d; + + ABCD(a, b, c, d, &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->count--; + return 0; + } + return -EEXIST; +} + +static int +delip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_iptree *req = + (struct nf_set_req_iptree *) data; + + if (size != sizeof(struct nf_set_req_iptree)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_iptree), + size); + return -EINVAL; + } + return __delip(set, req->ip); +} + +static int +delip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + return __delip(set, + ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr)); +} + +#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 nf_tree_gc(unsigned long ul_set) +{ + struct nf_set *set = (void *) ul_set; + struct nf_set_iptree *map = (struct nf_set_iptree *) set->data; + struct nf_set_iptreeb *btree; + struct nf_set_iptreec *ctree; + struct nf_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->count--; + } else + k = 1; + } + } + if (k == 0) { + DP("gc: %s: leaf %u %u %u empty", + set->name, a, b, c); + nf_set_cache_free(leaf_cache_id, 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); + nf_set_cache_free(branch_cache_id, 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); + nf_set_cache_free(branch_cache_id, 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 nf_set *set) +{ + struct nf_set_iptree *map = (struct nf_set_iptree *) 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 = nf_tree_gc; + map->gc.expires = jiffies + map->gc_interval * HZ; + add_timer(&map->gc); +} + +static int create(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_iptree_create *req = + (struct nf_set_req_iptree_create *) data; + struct nf_set_iptree *map; + + if (size != sizeof(struct nf_set_req_iptree_create)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_iptree_create), + size); + return -EINVAL; + } + + map = kmalloc(sizeof(struct nf_set_iptree), GFP_KERNEL); + if (!map) { + DP("out of memory for %d bytes", + sizeof(struct nf_set_iptree)); + return -ENOMEM; + } + memset(map, 0, sizeof(*map)); + map->limit = req->limit; + map->timeout = req->timeout; + set->data = map; + + init_gc_timer(set); + + return 0; +} + +static void __flush(struct nf_set_iptree *map) +{ + struct nf_set_iptreeb *btree; + struct nf_set_iptreec *ctree; + struct nf_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); + nf_set_cache_free(leaf_cache_id, dtree); + LOOP_WALK_END; + nf_set_cache_free(branch_cache_id, ctree); + LOOP_WALK_END; + nd_set_cache_free(branch_cache_id, btree); + LOOP_WALK_END; + + map->count = 0; +} + +static void destroy(struct nf_set *set) +{ + struct nf_set_iptree *map = (struct nf_set_iptree *) set->data; + + /* gc might be running */ + while (!del_timer(&map->gc)) + msleep(IPTREE_DESTROY_SLEEP); + __flush(map); + kfree(map); + set->data = NULL; +} + +static void flush(struct nf_set *set) +{ + struct nf_set_iptree *map = (struct nf_set_iptree *) 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 list_header(const struct nf_set *set, void *data) +{ + struct nf_set_iptree *map = (struct nf_set_iptree *) set->data; + struct nf_set_req_iptree_create *header = + (struct nf_set_req_iptree_create *) data; + + header->limit = map->limit; + header->timeout = map->timeout; +} + +static int list_members_size(const struct nf_set *set) +{ + struct nf_set_iptree *map = (struct nf_set_iptree *) set->data; + struct nf_set_iptreeb *btree; + struct nf_set_iptreec *ctree; + struct nf_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 nf_set_req_iptree)); +} + +static void list_members(const struct nf_set *set, void *data) +{ + struct nf_set_iptree *map = (struct nf_set_iptree *) set->data; + struct nf_set_iptreeb *btree; + struct nf_set_iptreec *ctree; + struct nf_set_iptreed *dtree; + unsigned int a,b,c,d; + size_t offset = 0; + struct nf_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 = (struct nf_set_req_iptree *)(data + offset); + entry->ip = ((a << 24) | (b << 16) | (c << 8) | d); + entry->timeout = !map->timeout ? 0 + : (dtree->expires[d] - jiffies)/HZ; + offset += sizeof(struct nf_set_req_iptree); + } + } + LOOP_WALK_END; + LOOP_WALK_END; + LOOP_WALK_END; +} + +static struct nf_set_type nf_set_iptree = { + .typename = SETTYPE_NAME, + .features = NFSET_TYPE_IP | NFSET_TYPE_SINGLE, + .subtype_base = 0, + .subtype_next = 1, + .me = THIS_MODULE, + .subtypes = { + [0] = { + .create = &create, + .destroy = &destroy, + .flush = &flush, + .reqsize = sizeof(struct nf_set_req_iphash), + .addip = &addip, + .addip_kernel = &addip_kernel, + .delip = &delip, + .delip_kernel = &delip_kernel, + .testip = &testip, + .testip_kernel = &testip_kernel, + .list = &list, + }, + }, +}; + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jozsef Kadlecsik "); +MODULE_DESCRIPTION("iptree type of IP sets"); + +static int __init init(void) +{ + int ret; + + ret = nf_set_cache_create(sizeof(struct nf_set_iptreeb), + &branch_cache_id); + if (ret) { + printk(KERN_ERR "Unable to create nf_set_iptreeb slab cache\n"); + ret = -ENOMEM; + goto out; + } + ret = nf_set_cache_create(sizeof(struct nf_set_iptreed), + &leaf_cache_id); + if (ret) { + printk(KERN_ERR "Unable to create nf_set_iptreed slab cache\n"); + ret = -ENOMEM; + goto free_branch; + } + ret = nf_set_register_set_type(&nf_set_iptree); + if (ret == 0) + goto out; + + nf_set_cache_destroy(leaf_cache_id); + free_branch: + nf_set_cache_destroy(branch_cache_id); + out: + return ret; +} + +static void __exit fini(void) +{ + /* FIXME: possible race with nf_set_create() */ + nf_set_unregister_set_type(&nf_set_iptree); + nf_set_cache_destroy(leaf_cache_id); + nf_setcache_destroy(branch_cache_id); +} + +module_init(init); +module_exit(fini); diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/netfilter/nf_set_macipmap.c linux-2.6.15.3-nfset/net/netfilter/nf_set_macipmap.c --- linux-2.6.15.3-orig/net/netfilter/nf_set_macipmap.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/net/netfilter/nf_set_macipmap.c 2006-03-08 23:45:23.000000000 +0100 @@ -0,0 +1,340 @@ +/* Copyright (C) 2000-2002 Joakim Axelsson + * Patrick Schaaf + * Martin Josefsson + * Copyright (C) 2003-2004 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* Kernel module implementing an IP set type: the macipmap type */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +static int +testip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_macipmap *map = (struct nf_set_macipmap *) set->data; + struct nf_set_macip *table = (struct nf_set_macip *) map->members; + struct nf_set_req_macipmap *req = (struct nf_set_req_macipmap *) data; + + if (size != sizeof(struct nf_set_req_macipmap)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_macipmap), + size); + return -EINVAL; + } + + if (req->ip < map->first_ip || req->ip > map->last_ip) + return -ERANGE; + + DP("set: %s, ip:%u.%u.%u.%u", + set->name, HIPQUAD(req->ip)); + if (test_bit(NFSET_MACIP_ISSET, + (void *) &table[req->ip - map->first_ip].flags)) { + return (memcmp(req->ethernet, + &table[req->ip - map->first_ip].ethernet, + ETH_ALEN) == 0); + } else { + return (map->flags & NFSET_MACIP_MATCHUNSET ? 1 : 0); + } +} + +static int +testip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + struct nf_set_macipmap *map = + (struct nf_set_macipmap *) set->data; + struct nf_set_macip *table = + (struct nf_set_macip *) map->members; + nf_set_ip_t ip; + + ip = ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr); + DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u", + flags[index] & NFSET_SRC ? "SRC" : "DST", + NIPQUAD(skb->nh.iph->saddr), + NIPQUAD(skb->nh.iph->daddr)); + + if (ip < map->first_ip || ip > map->last_ip) + return 0; + + DP("set: %s, ip:%u.%u.%u.%u", + set->name, HIPQUAD(ip)); + if (test_bit(NFSET_MACIP_ISSET, + (void *) &table[ip - map->first_ip].flags)) { + /* Is mac pointer valid? + * If so, compare... */ + return (skb->mac.raw >= skb->head + && (skb->mac.raw + ETH_HLEN) <= skb->data + && (memcmp(eth_hdr(skb)->h_source, + &table[ip - map->first_ip].ethernet, + ETH_ALEN) == 0)); + } else { + return (map->flags & NFSET_MACIP_MATCHUNSET ? 1 : 0); + } +} + +/* returns 0 on success */ +static inline int +__addip(struct nf_set *set, + nf_set_ip_t ip, unsigned char *ethernet) +{ + struct nf_set_macipmap *map = + (struct nf_set_macipmap *) set->data; + struct nf_set_macip *table = + (struct nf_set_macip *) map->members; + + if (ip < map->first_ip || ip > map->last_ip) + return -ERANGE; + if (test_and_set_bit(NFSET_MACIP_ISSET, + (void *) &table[ip - map->first_ip].flags)) + return -EEXIST; + + DP("%u.%u.%u.%u", HIPQUAD(ip)); + memcpy(&table[ip - map->first_ip].ethernet, ethernet, ETH_ALEN); + return 0; +} + +static int +addip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_macipmap *req = + (struct nf_set_req_macipmap *) data; + + if (size != sizeof(struct nf_set_req_macipmap)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_macipmap), + size); + return -EINVAL; + } + return __addip(set, req->ip, req->ethernet); +} + +static int +addip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + nf_set_ip_t ip; + + ip = ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr); + + if (!(skb->mac.raw >= skb->head + && (skb->mac.raw + ETH_HLEN) <= skb->data)) + return -EINVAL; + + return __addip(set, ip, eth_hdr(skb)->h_source); +} + +static inline int +__delip(struct nf_set *set, nf_set_ip_t ip) +{ + struct nf_set_macipmap *map = + (struct nf_set_macipmap *) set->data; + struct nf_set_macip *table = + (struct nf_set_macip *) map->members; + + if (ip < map->first_ip || ip > map->last_ip) + return -ERANGE; + + DP("%u.%u.%u.%u", HIPQUAD(ip)); + if (!test_and_clear_bit(NFSET_MACIP_ISSET, + (void *)&table[ip - map->first_ip].flags)) + return -EEXIST; + + return 0; +} + +static int +delip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_macipmap *req = + (struct nf_set_req_macipmap *) data; + + if (size != sizeof(struct nf_set_req_macipmap)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_macipmap), + size); + return -EINVAL; + } + return __delip(set, req->ip); +} + +static int +delip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + return __delip(set, + ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr)); +} + +static inline size_t members_size(nf_set_id_t from, nf_set_id_t to) +{ + return (size_t)((to - from + 1) * sizeof(struct nf_set_macip)); +} + +static int create(struct nf_set *set, const void *data, size_t size) +{ + int newbytes; + struct nf_set_req_macipmap_create *req = + (struct nf_set_req_macipmap_create *) data; + struct nf_set_macipmap *map; + + if (size != sizeof(struct nf_set_req_macipmap_create)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_macipmap_create), + size); + return -EINVAL; + } + + DP("from %u.%u.%u.%u to %u.%u.%u.%u", + HIPQUAD(req->from), HIPQUAD(req->to)); + + if (req->from > req->to) { + DP("bad ip range"); + return -ENOEXEC; + } + + if (req->to - req->from > MAX_RANGE) { + nf_set_printk("range too big (max %d addresses)", + MAX_RANGE+1); + return -ENOEXEC; + } + + map = kmalloc(sizeof(struct nf_set_macipmap), GFP_KERNEL); + if (!map) { + DP("out of memory for %d bytes", + sizeof(struct nf_set_macipmap)); + return -ENOMEM; + } + map->flags = req->flags; + map->first_ip = req->from; + map->last_ip = req->to; + newbytes = members_size(map->first_ip, map->last_ip); + map->members = nf_set_malloc(newbytes); + DP("members: %u %p", newbytes, map->members); + if (!map->members) { + DP("out of memory for %d bytes", newbytes); + kfree(map); + return -ENOMEM; + } + memset(map->members, 0, newbytes); + + set->data = map; + return 0; +} + +static void destroy(struct nf_set *set) +{ + struct nf_set_macipmap *map = + (struct nf_set_macipmap *) set->data; + + nf_set_free(map->members, members_size(map->first_ip, map->last_ip)); + kfree(map); + + set->data = NULL; +} + +static void flush(struct nf_set *set) +{ + struct nf_set_macipmap *map = + (struct nf_set_macipmap *) set->data; + memset(map->members, 0, members_size(map->first_ip, map->last_ip)); +} + +static void list_header(const struct nf_set *set, void *data) +{ + struct nf_set_macipmap *map = + (struct nf_set_macipmap *) set->data; + struct nf_set_req_macipmap_create *header = + (struct nf_set_req_macipmap_create *) data; + + DP("list_header %x %x %u", map->first_ip, map->last_ip, + map->flags); + + header->from = map->first_ip; + header->to = map->last_ip; + header->flags = map->flags; +} + +static int list_members_size(const struct nf_set *set) +{ + struct nf_set_macipmap *map = + (struct nf_set_macipmap *) set->data; + + DP("%u", members_size(map->first_ip, map->last_ip)); + return members_size(map->first_ip, map->last_ip); +} + +static void list_members(const struct nf_set *set, void *data) +{ + struct nf_set_macipmap *map = + (struct nf_set_macipmap *) set->data; + + int bytes = members_size(map->first_ip, map->last_ip); + + DP("members: %u %p", bytes, map->members); + memcpy(data, map->members, bytes); +} + +static struct nf_set_type nf_set_macipmap = { + .typename = SETTYPE_NAME, + .features = NFSET_TYPE_IP | NFSET_TYPE_SINGLE, + .subtype_base = 0, + .subtype_next = 1, + .me = THIS_MODULE, + .subtypes = { + [0] = { + .create = &create, + .destroy = &destroy, + .flush = &flush, + .reqsize = sizeof(struct nf_set_req_macipmap), + .addip = &addip, + .addip_kernel = &addip_kernel, + .delip = &delip, + .delip_kernel = &delip_kernel, + .testip = &testip, + .testip_kernel = &testip_kernel, + .list = &list, + }, + }, +}; + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jozsef Kadlecsik "); +MODULE_DESCRIPTION("macipmap type of IP sets"); + +static int __init init(void) +{ + init_max_malloc_size(); + return nf_set_register_set_type(&nf_set_macipmap); +} + +static void __exit fini(void) +{ + /* FIXME: possible race with nf_set_create() */ + nf_set_unregister_set_type(&nf_set_macipmap); +} + +module_init(init); +module_exit(fini); diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/netfilter/nf_set_nethash.c linux-2.6.15.3-nfset/net/netfilter/nf_set_nethash.c --- linux-2.6.15.3-orig/net/netfilter/nf_set_nethash.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/net/netfilter/nf_set_nethash.c 2006-03-09 08:19:52.000000000 +0100 @@ -0,0 +1,324 @@ +/* Copyright (C) 2003-2004 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* Kernel module implementing a cidr nethash set */ + +#include +#include +#include +#include + +#include + +#include +#include +#include + +static unsigned int cache_id; + +static inline int +__testip_cidr(struct nf_set *set, + nf_set_ip_t ip, + unsigned char cidr) +{ + struct nf_set_nethash *map = (struct nf_set_nethash *) set->data; + + return __iphash_testip(&map->map, pack(ip, cidr)); +} + +static inline int +__testip(struct nf_set *set, nf_set_ip_t ip) +{ + struct nf_set_nethash *map = (struct nf_set_nethash *) set->data; + int ret = 0; + + for (i = 0; i < 30 && map->cidr[i] && !ret; i++) { + ret = hash_ip_cidr(set, ip, map->cidr[i]); + } + return ret; +} + +static int +testip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_nethash *req = + (struct nf_set_req_nethash *) data; + + if (size != sizeof(struct nf_set_req_nethash)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_nethash), + size); + return -EINVAL; + } + return (req->cidr == 32 ? __testip(set, req->ip) + : __testip_cidr(set, req->ip, req->cidr)); +} + +static int +testip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + return __testip(set, + ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr)); +} + +static inline int +__addip(struct nf_set_nethash *map, nf_set_ip_t ip, unsigned char cidr) +{ + nf_set_ip_t hash_ip = pack(ip, cidr); + + DP("%u.%u.%u.%u/%u, %u.%u.%u.%u", HIPQUAD(ip), cidr, HIPQUAD(hash_ip)); + return __iphash_addip(cache_id, hash_ip); +} + +static void +update_cidr_sizes(struct nf_set_nethash *map, unsigned char cidr) +{ + unsigned char next; + int i; + + for (i = 0; i < 30 && map->cidr[i]; i++) { + if (map->cidr[i] == cidr) { + return; + } else if (map->cidr[i] < cidr) { + next = map->cidr[i]; + map->cidr[i] = cidr; + cidr = next; + } + } + if (i < 30) + map->cidr[i] = cidr; +} + +static int +addip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_nethash *map = (struct nf_set_nethash *) set->data; + struct nf_set_req_nethash *req = + (struct nf_set_req_nethash *) data; + int ret; + + if (size != sizeof(struct nf_set_req_nethash)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_nethash), + size); + return -EINVAL; + } + ret = __addip(map, req->ip, req->cidr); + + if (ret == 0) + update_cidr_sizes(map, req->cidr); + + return ret; +} + +static int +addip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + struct nf_set_nethash *map = (struct nf_set_nethash *) set->data; + int ret = -ERANGE; + nf_set_ip_t ip = ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr); + + if (map->cidr[0]) + ret = __addip(map, ip, map->cidr[0]); + + return ret; +} + +static inline int +__delip(struct nf_set_nethash *map, nf_set_ip_t ip, unsigned char cidr) +{ + nf_set_ip_t hash_ip = hash_ip_cidr(map, ip, cidr); + + DP("%u.%u.%u.%u/%u, %u.%u.%u.%u", HIPQUAD(ip), cidr, HIPQUAD(hash_ip)); + return __iphash_delip(cache_id, hash_ip); +} + +static int +delip(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_nethash *map = (struct nf_set_nethash *) set->data; + struct nf_set_req_nethash *req = + (struct nf_set_req_nethash *) data; + + if (size != sizeof(struct nf_set_req_nethash)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_nethash), + size); + return -EINVAL; + } + /* TODO: no garbage collection in map->cidr */ + return __delip(map, req->ip, req->cidr); +} + +static int +delip_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + struct nf_set_nethash *map = (struct nf_set_nethash *) set->data; + int ret = -ERANGE; + nf_set_ip_t ip = ntohl(flags[index] & NFSET_SRC + ? skb->nh.iph->saddr + : skb->nh.iph->daddr); + + if (map->cidr[0]) + ret = __delip(map, ip, map->cidr[0]); + + return ret; +} + +static int create(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_nethash_create *req = + (struct nf_set_req_nethash_create *) data; + struct nf_set_nethash *map; + uint16_t i; + + if (size != sizeof(struct nf_set_req_nethash_create)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_nethash_create), + size); + return -EINVAL; + } + + if (req->hashsize < 1) { + nf_set_printk("hashsize too small"); + return -ENOEXEC; + } + if (req->limit < 1) { + nf_set_printk("limit too small"); + return -ENOEXEC; + } + + map = kmalloc(sizeof(struct nf_set_nethash) + + req->hashsize * sizeof(struct iphash *), GFP_KERNEL); + if (!map) { + DP("out of memory for %d bytes", + sizeof(struct nf_set_nethash) + + req->hashsize * sizeof(struct iphash *)); + return -ENOMEM; + } + memset(map, 0, + sizeof(struct nf_set_nethash) + + req->hashsize * sizeof(struct iphash *)); + + map->map.hashsize = req->hashsize; + map->map.limit = req->limit; + get_random_bytes(&map->map.initval, 4); + memset(map->cidr, 0, 30 * sizeof(unsigned char)); + + set->data = map; + return 0; +} + +static void destroy(struct nf_set *set) +{ + struct nf_set_nethash *map = (struct nf_set_nethash *) set->data; + + __iphash_destroy(cache_id, &map->map); + kfree(map); + + set->data = NULL; +} + +static void flush(struct nf_set *set) +{ + struct nf_set_nethash *map = (struct nf_set_nethash *) set->data; + + __iphash_flush(cache_id, &map->map); + memset(map->cidr, 0, 30 * sizeof(unsigned char)); +} + +static void list_header(const struct nf_set *set, void *data) +{ + struct nf_set_nethash *map = (struct nf_set_nethash *) set->data; + struct nf_set_req_nethash_create *header = + (struct nf_set_req_nethash_create *) data; + + header->hashsize = map->hashsize; + header->probes = map->probes; + header->resize = map->resize; +} + +static int list_members_size(const struct nf_set *set) +{ + struct nf_set_nethash *map = (struct nf_set_nethash *) set->data; + + return (map->hashsize * sizeof(nf_set_ip_t)); +} + +static void list_members(const struct nf_set *set, void *data) +{ + struct nf_set_nethash *map = (struct nf_set_nethash *) set->data; + nf_set_ip_t i, *elem; + + for (i = 0; i < map->hashsize; i++) { + elem = HARRAY_ELEM(map->members, nf_set_ip_t *, i); + ((nf_set_ip_t *)data)[i] = *elem; + } +} + +static struct nf_set_type nf_set_nethash = { + .typename = SETTYPE_NAME, + .features = NFSET_TYPE_IP | NFSET_TYPE_SINGLE, + .subtype_base = 0, + .subtype_next = 1, + .me = THIS_MODULE, + .subtypes = { + [0] = { + .create = &create, + .destroy = &destroy, + .flush = &flush, + .reqsize = sizeof(struct nf_set_req_nethash), + .addip = &addip, + .addip_kernel = &addip_kernel, + .delip = &delip, + .delip_kernel = &delip_kernel, + .testip = &testip, + .testip_kernel = &testip_kernel, + .list = &list, + }, + }, +}; + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jozsef Kadlecsik "); +MODULE_DESCRIPTION("nethash type of IP sets"); + +static int __init init(void) +{ + int ret; + + ret = nf_set_cache_create(sizeof(struct iphash), &cache_id); + if (ret) { + printk(KERN_ERR "Unable to create slab cache for nf_set_iphash\n"); + return ret; + } + ret = nf_set_register_set_type(&nf_set_nethash); + if (ret) + nf_set_cache_destroy(cache_id); + + return ret; +} + +static void __exit fini(void) +{ + /* FIXME: possible race with nf_set_create() */ + nf_set_unregister_set_type(&nf_set_nethash); + nf_set_cache_destroy(cache_id); +} + +module_init(init); +module_exit(fini); diff -urN --exclude-from=/usr/src/diff.exclude linux-2.6.15.3-orig/net/netfilter/nf_set_portmap.c linux-2.6.15.3-nfset/net/netfilter/nf_set_portmap.c --- linux-2.6.15.3-orig/net/netfilter/nf_set_portmap.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15.3-nfset/net/netfilter/nf_set_portmap.c 2006-03-09 00:01:35.000000000 +0100 @@ -0,0 +1,319 @@ +/* Copyright (C) 2003-2004 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* Kernel module implementing a port set type as a bitmap */ + +#include +#include +#include +#include +#include +#include + +#include + +#include + +/* We must handle non-linear skbs */ +static inline nf_set_ip_t +get_port(const struct sk_buff *skb, u_int32_t flags) +{ + struct iphdr *iph = skb->nh.iph; + 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, skb->nh.iph->ihl*4, &tcph, sizeof(tcph)) < 0) + /* No choice either */ + return INVALID_PORT; + + return ntohs(flags & NFSET_SRC ? + tcph.source : tcph.dest); + } + case IPPROTO_UDP: { + struct udphdr udph; + + if (offset) + return INVALID_PORT; + + if (skb_copy_bits(skb, skb->nh.iph->ihl*4, &udph, sizeof(udph)) < 0) + /* No choice either */ + return INVALID_PORT; + + return ntohs(flags & NFSET_SRC ? + udph.source : udph.dest); + } + default: + return INVALID_PORT; + } +} + +static inline int +__testport(struct nf_set *set, nf_set_ip_t port) +{ + struct nf_set_portmap *map = (struct nf_set_portmap *) set->data; + + if (port < map->first_port || port > map->last_port) + return -ERANGE; + + DP("set: %s, port:%u", set->name, port); + return !!test_bit(port - map->first_port, map->members); +} + +static int +testport(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_portmap *req = + (struct nf_set_req_portmap *) data; + + if (size != sizeof(struct nf_set_req_portmap)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_portmap), + size); + return -EINVAL; + } + return __testport(set, req->port); +} + +static int +testport_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + int res; + nf_set_ip_t port = get_port(skb, flags[index]); + + DP("flag %s port %u", flags[index] & NFSET_SRC ? "SRC" : "DST", port); + if (port == INVALID_PORT) + return 0; + + res = __testport(set, port); + + return (res < 0 ? 0 : res); +} + +static inline int +__addport(struct nf_set *set, nf_set_ip_t port) +{ + struct nf_set_portmap *map = (struct nf_set_portmap *) set->data; + + if (port < map->first_port || port > map->last_port) + return -ERANGE; + if (test_and_set_bit(port - map->first_port, map->members)) + return -EEXIST; + + DP("port %u", port); + return 0; +} + +static int +addport(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_portmap *req = + (struct nf_set_req_portmap *) data; + + if (size != sizeof(struct nf_set_req_portmap)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_portmap), + size); + return -EINVAL; + } + return __addport(set, req->port); +} + +static int +addport_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + nf_set_ip_t port = get_port(skb, flags[index]); + + if (port == INVALID_PORT) + return -EINVAL; + + return __addport(set, port); +} + +static inline int +__delport(struct nf_set *set, nf_set_ip_t port) +{ + struct nf_set_portmap *map = (struct nf_set_portmap *) set->data; + + if (port < map->first_port || port > map->last_port) + return -ERANGE; + if (!test_and_clear_bit(port - map->first_port, map->members)) + return -EEXIST; + + DP("port %u", port); + return 0; +} + +static int +delport(struct nf_set *set, const void *data, size_t size) +{ + struct nf_set_req_portmap *req = + (struct nf_set_req_portmap *) data; + + if (size != sizeof(struct nf_set_req_portmap)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_portmap), + size); + return -EINVAL; + } + return __delport(set, req->port); +} + +static int +delport_kernel(struct nf_set *set, + const struct sk_buff *skb, + const u_int32_t *flags) +{ + nf_set_ip_t port = get_port(skb, flags[index]); + + if (port == INVALID_PORT) + return -EINVAL; + + return __delport(set, port); +} + +static int create(struct nf_set *set, const void *data, size_t size) +{ + int newbytes; + struct nf_set_req_portmap_create *req = + (struct nf_set_req_portmap_create *) data; + struct nf_set_portmap *map; + + if (size != sizeof(struct nf_set_req_portmap_create)) { + nf_set_printk("data length wrong (want %zu, have %zu)", + sizeof(struct nf_set_req_portmap_create), + size); + return -EINVAL; + } + + DP("from %u to %u", req->from, req->to); + + if (req->from > req->to) { + DP("bad port range"); + return -ENOEXEC; + } + + if (req->to - req->from > MAX_RANGE) { + nf_set_printk("range too big (max %d ports)", + MAX_RANGE+1); + return -ENOEXEC; + } + + map = kmalloc(sizeof(struct nf_set_portmap), GFP_KERNEL); + if (!map) { + DP("out of memory for %d bytes", + sizeof(struct nf_set_portmap)); + return -ENOMEM; + } + map->first_port = req->from; + map->last_port = req->to; + newbytes = bitmap_bytes(req->from, req->to); + map->members = kmalloc(newbytes, GFP_KERNEL); + if (!map->members) { + DP("out of memory for %d bytes", newbytes); + kfree(map); + return -ENOMEM; + } + memset(map->members, 0, newbytes); + + set->data = map; + return 0; +} + +static void destroy(struct nf_set *set) +{ + struct nf_set_portmap *map = (struct nf_set_portmap *) set->data; + + kfree(map->members); + kfree(map); + + set->data = NULL; +} + +static void flush(struct nf_set *set) +{ + struct nf_set_portmap *map = (struct nf_set_portmap *) set->data; + memset(map->members, 0, bitmap_bytes(map->first_port, map->last_port)); +} + +static void list_header(const struct nf_set *set, void *data) +{ + struct nf_set_portmap *map = (struct nf_set_portmap *) set->data; + struct nf_set_req_portmap_create *header = + (struct nf_set_req_portmap_create *) data; + + DP("list_header %u %u", map->first_port, map->last_port); + + header->from = map->first_port; + header->to = map->last_port; +} + +static int list_members_size(const struct nf_set *set) +{ + struct nf_set_portmap *map = (struct nf_set_portmap *) set->data; + + return bitmap_bytes(map->first_port, map->last_port); +} + +static void list_members(const struct nf_set *set, void *data) +{ + struct nf_set_portmap *map = (struct nf_set_portmap *) set->data; + int bytes = bitmap_bytes(map->first_port, map->last_port); + + memcpy(data, map->members, bytes); +} + +static struct nf_set_type nf_set_portmap = { + .typename = SETTYPE_NAME, + .features = NFSET_TYPE_PORT | NFSET_TYPE_SINGLE, + .subtype_base = 0, + .subtype_next = 1, + .me = THIS_MODULE, + .subtypes = { + [0] = { + .create = &create, + .destroy = &destroy, + .flush = &flush, + .reqsize = sizeof(struct nf_set_req_portmap), + .addip = &addport, + .addip_kernel = &addport_kernel, + .delip = &delport, + .delip_kernel = &delport_kernel, + .testip = &testport, + .testip_kernel = &testport_kernel, + .list = &list, + }, + }, +}; + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jozsef Kadlecsik "); +MODULE_DESCRIPTION("portmap type of IP sets"); + +static int __init init(void) +{ + return nf_set_register_set_type(&nf_set_portmap); +} + +static void __exit fini(void) +{ + /* FIXME: possible race with nf_set_create() */ + nf_set_unregister_set_type(&nf_set_portmap); +} + +module_init(init); +module_exit(fini);