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netfilter: ipset: Bitmap types using the unified code base

Browse source 
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Jozsef Kadlecsik 2013-04-27 14:37:01 +02:00 • committed by Pablo Neira Ayuso
parent 4d73de38c2
commit b0da3905bb
3 changed files with 330 additions and 972 deletions
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359
net/netfilter/ipset/ip_set_bitmap_ip.c
View file

@ -1,6 +1,6 @@
/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
* Patrick Schaaf <bof@bof.de>
* Copyright (C) 2003-2011 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -24,8 +24,6 @@
#include <linux/netfilter/ipset/pfxlen.h>
#include <linux/netfilter/ipset/ip_set.h>
#include <linux/netfilter/ipset/ip_set_bitmap.h>
#define IP_SET_BITMAP_TIMEOUT
#include <linux/netfilter/ipset/ip_set_timeout.h>
#define REVISION_MIN 0
#define REVISION_MAX 0
@ -35,20 +33,28 @@ MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
IP_SET_MODULE_DESC("bitmap:ip", REVISION_MIN, REVISION_MAX);
MODULE_ALIAS("ip_set_bitmap:ip");
#define MTYPE bitmap_ip
/* Type structure */
struct bitmap_ip {
void *members; /* the set members */
void *extensions; /* data extensions */
u32 first_ip; /* host byte order, included in range */
u32 last_ip; /* host byte order, included in range */
u32 elements; /* number of max elements in the set */
u32 hosts; /* number of hosts in a subnet */
size_t memsize; /* members size */
size_t dsize; /* extensions struct size */
size_t offset[IPSET_OFFSET_MAX]; /* Offsets to extensions */
u8 netmask; /* subnet netmask */
u32 timeout; /* timeout parameter */
struct timer_list gc; /* garbage collection */
};
/* Base variant */
/* ADT structure for generic function args */
struct bitmap_ip_adt_elem {
u16 id;
};
static inline u32
ip_to_id(const struct bitmap_ip *m, u32 ip)
@ -56,188 +62,67 @@ ip_to_id(const struct bitmap_ip *m, u32 ip)
return ((ip & ip_set_hostmask(m->netmask)) - m->first_ip)/m->hosts;
}
static int
bitmap_ip_test(struct ip_set *set, void *value, u32 timeout, u32 flags)
{
const struct bitmap_ip *map = set->data;
u16 id = *(u16 *)value;
/* Common functions */
static inline int
bitmap_ip_do_test(const struct bitmap_ip_adt_elem *e, struct bitmap_ip *map)
{
return !!test_bit(e->id, map->members);
}
static inline int
bitmap_ip_gc_test(u16 id, const struct bitmap_ip *map)
{
return !!test_bit(id, map->members);
}
static int
bitmap_ip_add(struct ip_set *set, void *value, u32 timeout, u32 flags)
static inline int
bitmap_ip_do_add(const struct bitmap_ip_adt_elem *e, struct bitmap_ip *map,
u32 flags)
{
struct bitmap_ip *map = set->data;
u16 id = *(u16 *)value;
if (test_and_set_bit(id, map->members))
return -IPSET_ERR_EXIST;
return 0;
return !!test_and_set_bit(e->id, map->members);
}
static int
bitmap_ip_del(struct ip_set *set, void *value, u32 timeout, u32 flags)
static inline int
bitmap_ip_do_del(const struct bitmap_ip_adt_elem *e, struct bitmap_ip *map)
{
struct bitmap_ip *map = set->data;
u16 id = *(u16 *)value;
if (!test_and_clear_bit(id, map->members))
return -IPSET_ERR_EXIST;
return 0;
return !test_and_clear_bit(e->id, map->members);
}
static int
bitmap_ip_list(const struct ip_set *set,
struct sk_buff *skb, struct netlink_callback *cb)
static inline int
bitmap_ip_do_list(struct sk_buff *skb, const struct bitmap_ip *map, u32 id)
{
const struct bitmap_ip *map = set->data;
struct nlattr *atd, *nested;
u32 id, first = cb->args[2];
atd = ipset_nest_start(skb, IPSET_ATTR_ADT);
if (!atd)
return -EMSGSIZE;
for (; cb->args[2] < map->elements; cb->args[2]++) {
id = cb->args[2];
if (!test_bit(id, map->members))
continue;
nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
if (!nested) {
if (id == first) {
nla_nest_cancel(skb, atd);
return -EMSGSIZE;
} else
goto nla_put_failure;
}
if (nla_put_ipaddr4(skb, IPSET_ATTR_IP,
htonl(map->first_ip + id * map->hosts)))
goto nla_put_failure;
ipset_nest_end(skb, nested);
}
ipset_nest_end(skb, atd);
/* Set listing finished */
cb->args[2] = 0;
return 0;
nla_put_failure:
nla_nest_cancel(skb, nested);
ipset_nest_end(skb, atd);
if (unlikely(id == first)) {
cb->args[2] = 0;
return -EMSGSIZE;
}
return 0;
return nla_put_ipaddr4(skb, IPSET_ATTR_IP,
htonl(map->first_ip + id * map->hosts));
}
/* Timeout variant */
static int
bitmap_ip_ttest(struct ip_set *set, void *value, u32 timeout, u32 flags)
static inline int
bitmap_ip_do_head(struct sk_buff *skb, const struct bitmap_ip *map)
{
const struct bitmap_ip *map = set->data;
const unsigned long *members = map->members;
u16 id = *(u16 *)value;
return ip_set_timeout_test(members[id]);
}
static int
bitmap_ip_tadd(struct ip_set *set, void *value, u32 timeout, u32 flags)
{
struct bitmap_ip *map = set->data;
unsigned long *members = map->members;
u16 id = *(u16 *)value;
if (ip_set_timeout_test(members[id]) && !(flags & IPSET_FLAG_EXIST))
return -IPSET_ERR_EXIST;
members[id] = ip_set_timeout_set(timeout);
return 0;
}
static int
bitmap_ip_tdel(struct ip_set *set, void *value, u32 timeout, u32 flags)
{
struct bitmap_ip *map = set->data;
unsigned long *members = map->members;
u16 id = *(u16 *)value;
int ret = -IPSET_ERR_EXIST;
if (ip_set_timeout_test(members[id]))
ret = 0;
members[id] = IPSET_ELEM_UNSET;
return ret;
}
static int
bitmap_ip_tlist(const struct ip_set *set,
struct sk_buff *skb, struct netlink_callback *cb)
{
const struct bitmap_ip *map = set->data;
struct nlattr *adt, *nested;
u32 id, first = cb->args[2];
const unsigned long *members = map->members;
adt = ipset_nest_start(skb, IPSET_ATTR_ADT);
if (!adt)
return -EMSGSIZE;
for (; cb->args[2] < map->elements; cb->args[2]++) {
id = cb->args[2];
if (!ip_set_timeout_test(members[id]))
continue;
nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
if (!nested) {
if (id == first) {
nla_nest_cancel(skb, adt);
return -EMSGSIZE;
} else
goto nla_put_failure;
}
if (nla_put_ipaddr4(skb, IPSET_ATTR_IP,
htonl(map->first_ip + id * map->hosts)) ||
nla_put_net32(skb, IPSET_ATTR_TIMEOUT,
htonl(ip_set_timeout_get(members[id]))))
goto nla_put_failure;
ipset_nest_end(skb, nested);
}
ipset_nest_end(skb, adt);
/* Set listing finished */
cb->args[2] = 0;
return 0;
nla_put_failure:
nla_nest_cancel(skb, nested);
ipset_nest_end(skb, adt);
if (unlikely(id == first)) {
cb->args[2] = 0;
return -EMSGSIZE;
}
return 0;
return nla_put_ipaddr4(skb, IPSET_ATTR_IP, htonl(map->first_ip)) ||
nla_put_ipaddr4(skb, IPSET_ATTR_IP_TO, htonl(map->last_ip)) ||
(map->netmask != 32 &&
nla_put_u8(skb, IPSET_ATTR_NETMASK, map->netmask));
}
static int
bitmap_ip_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
enum ipset_adt adt, const struct ip_set_adt_opt *opt)
enum ipset_adt adt, struct ip_set_adt_opt *opt)
{
struct bitmap_ip *map = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct bitmap_ip_adt_elem e = { };
struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, map);
u32 ip;
ip = ntohl(ip4addr(skb, opt->flags & IPSET_DIM_ONE_SRC));
if (ip < map->first_ip || ip > map->last_ip)
return -IPSET_ERR_BITMAP_RANGE;
ip = ip_to_id(map, ip);
e.id = ip_to_id(map, ip);
return adtfn(set, &ip, opt_timeout(opt, map), opt->cmdflags);
return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
}
static int
@ -246,8 +131,9 @@ bitmap_ip_uadt(struct ip_set *set, struct nlattr *tb[],
{
struct bitmap_ip *map = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
u32 timeout = map->timeout;
u32 ip, ip_to, id;
u32 ip, ip_to;
struct bitmap_ip_adt_elem e = { };
struct ip_set_ext ext = IP_SET_INIT_UEXT(map);
int ret = 0;
if (unlikely(!tb[IPSET_ATTR_IP] ||
@ -257,22 +143,17 @@ bitmap_ip_uadt(struct ip_set *set, struct nlattr *tb[],
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip) ||
ip_set_get_extensions(set, tb, &ext);
if (ret)
return ret;
if (ip < map->first_ip || ip > map->last_ip)
return -IPSET_ERR_BITMAP_RANGE;
if (tb[IPSET_ATTR_TIMEOUT]) {
if (!with_timeout(map->timeout))
return -IPSET_ERR_TIMEOUT;
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
if (adt == IPSET_TEST) {
id = ip_to_id(map, ip);
return adtfn(set, &id, timeout, flags);
e.id = ip_to_id(map, ip);
return adtfn(set, &e, &ext, &ext, flags);
}
if (tb[IPSET_ATTR_IP_TO]) {
@ -297,8 +178,8 @@ bitmap_ip_uadt(struct ip_set *set, struct nlattr *tb[],
return -IPSET_ERR_BITMAP_RANGE;
for (; !before(ip_to, ip); ip += map->hosts) {
id = ip_to_id(map, ip);
ret = adtfn(set, &id, timeout, flags);
e.id = ip_to_id(map, ip);
ret = adtfn(set, &e, &ext, &ext, flags);
if (ret && !ip_set_eexist(ret, flags))
return ret;
@ -308,54 +189,6 @@ bitmap_ip_uadt(struct ip_set *set, struct nlattr *tb[],
return ret;
}
static void
bitmap_ip_destroy(struct ip_set *set)
{
struct bitmap_ip *map = set->data;
if (with_timeout(map->timeout))
del_timer_sync(&map->gc);
ip_set_free(map->members);
kfree(map);
set->data = NULL;
}
static void
bitmap_ip_flush(struct ip_set *set)
{
struct bitmap_ip *map = set->data;
memset(map->members, 0, map->memsize);
}
static int
bitmap_ip_head(struct ip_set *set, struct sk_buff *skb)
{
const struct bitmap_ip *map = set->data;
struct nlattr *nested;
nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
if (!nested)
goto nla_put_failure;
if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, htonl(map->first_ip)) ||
nla_put_ipaddr4(skb, IPSET_ATTR_IP_TO, htonl(map->last_ip)) ||
(map->netmask != 32 &&
nla_put_u8(skb, IPSET_ATTR_NETMASK, map->netmask)) ||
nla_put_net32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref - 1)) ||
nla_put_net32(skb, IPSET_ATTR_MEMSIZE,
htonl(sizeof(*map) + map->memsize)) ||
(with_timeout(map->timeout) &&
nla_put_net32(skb, IPSET_ATTR_TIMEOUT, htonl(map->timeout))))
goto nla_put_failure;
ipset_nest_end(skb, nested);
return 0;
nla_put_failure:
return -EMSGSIZE;
}
static bool
bitmap_ip_same_set(const struct ip_set *a, const struct ip_set *b)
{
@ -365,70 +198,22 @@ bitmap_ip_same_set(const struct ip_set *a, const struct ip_set *b)
return x->first_ip == y->first_ip &&
x->last_ip == y->last_ip &&
x->netmask == y->netmask &&
x->timeout == y->timeout;
x->timeout == y->timeout &&
a->extensions == b->extensions;
}
static const struct ip_set_type_variant bitmap_ip = {
.kadt = bitmap_ip_kadt,
.uadt = bitmap_ip_uadt,
.adt = {
[IPSET_ADD] = bitmap_ip_add,
[IPSET_DEL] = bitmap_ip_del,
[IPSET_TEST] = bitmap_ip_test,
},
.destroy = bitmap_ip_destroy,
.flush = bitmap_ip_flush,
.head = bitmap_ip_head,
.list = bitmap_ip_list,
.same_set = bitmap_ip_same_set,
/* Plain variant */
struct bitmap_ip_elem {
};
static const struct ip_set_type_variant bitmap_tip = {
.kadt = bitmap_ip_kadt,
.uadt = bitmap_ip_uadt,
.adt = {
[IPSET_ADD] = bitmap_ip_tadd,
[IPSET_DEL] = bitmap_ip_tdel,
[IPSET_TEST] = bitmap_ip_ttest,
},
.destroy = bitmap_ip_destroy,
.flush = bitmap_ip_flush,
.head = bitmap_ip_head,
.list = bitmap_ip_tlist,
.same_set = bitmap_ip_same_set,
/* Timeout variant */
struct bitmap_ipt_elem {
unsigned long timeout;
};
static void
bitmap_ip_gc(unsigned long ul_set)
{
struct ip_set *set = (struct ip_set *) ul_set;
struct bitmap_ip *map = set->data;
unsigned long *table = map->members;
u32 id;
/* We run parallel with other readers (test element)
* but adding/deleting new entries is locked out */
read_lock_bh(&set->lock);
for (id = 0; id < map->elements; id++)
if (ip_set_timeout_expired(table[id]))
table[id] = IPSET_ELEM_UNSET;
read_unlock_bh(&set->lock);
map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ;
add_timer(&map->gc);
}
static void
bitmap_ip_gc_init(struct ip_set *set)
{
struct bitmap_ip *map = set->data;
init_timer(&map->gc);
map->gc.data = (unsigned long) set;
map->gc.function = bitmap_ip_gc;
map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ;
add_timer(&map->gc);
}
#include "ip_set_bitmap_gen.h"
/* Create bitmap:ip type of sets */
@ -440,6 +225,13 @@ init_map_ip(struct ip_set *set, struct bitmap_ip *map,
map->members = ip_set_alloc(map->memsize);
if (!map->members)
return false;
if (map->dsize) {
map->extensions = ip_set_alloc(map->dsize * elements);
if (!map->extensions) {
kfree(map->members);
return false;
}
}
map->first_ip = first_ip;
map->last_ip = last_ip;
map->elements = elements;
@ -526,8 +318,12 @@ bitmap_ip_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
if (!map)
return -ENOMEM;
map->memsize = bitmap_bytes(0, elements - 1);
set->variant = &bitmap_ip;
if (tb[IPSET_ATTR_TIMEOUT]) {
map->memsize = elements * sizeof(unsigned long);
map->dsize = sizeof(struct bitmap_ipt_elem);
map->offset[IPSET_OFFSET_TIMEOUT] =
offsetof(struct bitmap_ipt_elem, timeout);
if (!init_map_ip(set, map, first_ip, last_ip,
elements, hosts, netmask)) {
@ -536,19 +332,16 @@ bitmap_ip_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
}
map->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
set->variant = &bitmap_tip;
set->extensions |= IPSET_EXT_TIMEOUT;
bitmap_ip_gc_init(set);
bitmap_ip_gc_init(set, bitmap_ip_gc);
} else {
map->memsize = bitmap_bytes(0, elements - 1);
map->dsize = 0;
if (!init_map_ip(set, map, first_ip, last_ip,
elements, hosts, netmask)) {
kfree(map);
return -ENOMEM;
}
set->variant = &bitmap_ip;
}
return 0;
}

572
net/netfilter/ipset/ip_set_bitmap_ipmac.c
View file

@ -1,7 +1,7 @@
/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
* Patrick Schaaf <bof@bof.de>
* Martin Josefsson <gandalf@wlug.westbo.se>
* Copyright (C) 2003-2011 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -23,7 +23,6 @@
#include <linux/netfilter/ipset/pfxlen.h>
#include <linux/netfilter/ipset/ip_set.h>
#include <linux/netfilter/ipset/ip_set_timeout.h>
#include <linux/netfilter/ipset/ip_set_bitmap.h>
#define REVISION_MIN 0
@ -34,333 +33,198 @@ MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
IP_SET_MODULE_DESC("bitmap:ip,mac", REVISION_MIN, REVISION_MAX);
MODULE_ALIAS("ip_set_bitmap:ip,mac");
#define MTYPE bitmap_ipmac
#define IP_SET_BITMAP_STORED_TIMEOUT
enum {
MAC_EMPTY, /* element is not set */
MAC_FILLED, /* element is set with MAC */
MAC_UNSET, /* element is set, without MAC */
MAC_FILLED, /* element is set with MAC */
};
/* Type structure */
struct bitmap_ipmac {
void *members; /* the set members */
void *extensions; /* MAC + data extensions */
u32 first_ip; /* host byte order, included in range */
u32 last_ip; /* host byte order, included in range */
u32 elements; /* number of max elements in the set */
u32 timeout; /* timeout value */
struct timer_list gc; /* garbage collector */
size_t memsize; /* members size */
size_t dsize; /* size of element */
size_t offset[IPSET_OFFSET_MAX]; /* Offsets to extensions */
};
/* ADT structure for generic function args */
struct ipmac {
u32 id; /* id in array */
unsigned char *ether; /* ethernet address */
struct bitmap_ipmac_adt_elem {
u16 id;
unsigned char *ether;
};
/* Member element without and with timeout */
struct ipmac_elem {
struct bitmap_ipmac_elem {
unsigned char ether[ETH_ALEN];
unsigned char match;
unsigned char filled;
} __attribute__ ((aligned));
struct ipmac_telem {
unsigned char ether[ETH_ALEN];
unsigned char match;
unsigned long timeout;
} __attribute__ ((aligned));
static inline void *
bitmap_ipmac_elem(const struct bitmap_ipmac *map, u32 id)
static inline u32
ip_to_id(const struct bitmap_ipmac *m, u32 ip)
{
return (void *)((char *)map->members + id * map->dsize);
return ip - m->first_ip;
}
static inline bool
bitmap_timeout(const struct bitmap_ipmac *map, u32 id)
static inline struct bitmap_ipmac_elem *
get_elem(void *extensions, u16 id, size_t dsize)
{
const struct ipmac_telem *elem = bitmap_ipmac_elem(map, id);
return ip_set_timeout_test(elem->timeout);
return (struct bitmap_ipmac_elem *)(extensions + id * dsize);
}
static inline bool
bitmap_expired(const struct bitmap_ipmac *map, u32 id)
{
const struct ipmac_telem *elem = bitmap_ipmac_elem(map, id);
/* Common functions */
return ip_set_timeout_expired(elem->timeout);
static inline int
bitmap_ipmac_do_test(const struct bitmap_ipmac_adt_elem *e,
const struct bitmap_ipmac *map)
{
const struct bitmap_ipmac_elem *elem;
if (!test_bit(e->id, map->members))
return 0;
elem = get_elem(map->extensions, e->id, map->dsize);
if (elem->filled == MAC_FILLED)
return e->ether == NULL ||
ether_addr_equal(e->ether, elem->ether);
/* Trigger kernel to fill out the ethernet address */
return -EAGAIN;
}
static inline int
bitmap_ipmac_exist(const struct ipmac_telem *elem)
bitmap_ipmac_gc_test(u16 id, const struct bitmap_ipmac *map)
{
return elem->match == MAC_UNSET ||
(elem->match == MAC_FILLED &&
!ip_set_timeout_expired(elem->timeout));
const struct bitmap_ipmac_elem *elem;
if (!test_bit(id, map->members))
return 0;
elem = get_elem(map->extensions, id, map->dsize);
/* Timer not started for the incomplete elements */
return elem->filled == MAC_FILLED;
}
/* Base variant */
static int
bitmap_ipmac_test(struct ip_set *set, void *value, u32 timeout, u32 flags)
static inline int
bitmap_ipmac_is_filled(const struct bitmap_ipmac_elem *elem)
{
const struct bitmap_ipmac *map = set->data;
const struct ipmac *data = value;
const struct ipmac_elem *elem = bitmap_ipmac_elem(map, data->id);
switch (elem->match) {
case MAC_UNSET:
/* Trigger kernel to fill out the ethernet address */
return -EAGAIN;
case MAC_FILLED:
return data->ether == NULL ||
ether_addr_equal(data->ether, elem->ether);
}
return 0;
return elem->filled == MAC_FILLED;
}
static int
bitmap_ipmac_add(struct ip_set *set, void *value, u32 timeout, u32 flags)
static inline int
bitmap_ipmac_add_timeout(unsigned long *timeout,
const struct bitmap_ipmac_adt_elem *e,
const struct ip_set_ext *ext,
struct bitmap_ipmac *map, int mode)
{
struct bitmap_ipmac *map = set->data;
const struct ipmac *data = value;
struct ipmac_elem *elem = bitmap_ipmac_elem(map, data->id);
u32 t = ext->timeout;
switch (elem->match) {
case MAC_UNSET:
if (!data->ether)
/* Already added without ethernet address */
return -IPSET_ERR_EXIST;
/* Fill the MAC address */
memcpy(elem->ether, data->ether, ETH_ALEN);
elem->match = MAC_FILLED;
break;
case MAC_FILLED:
return -IPSET_ERR_EXIST;
case MAC_EMPTY:
if (data->ether) {
memcpy(elem->ether, data->ether, ETH_ALEN);
elem->match = MAC_FILLED;
} else
elem->match = MAC_UNSET;
}
return 0;
}
static int
bitmap_ipmac_del(struct ip_set *set, void *value, u32 timeout, u32 flags)
{
struct bitmap_ipmac *map = set->data;
const struct ipmac *data = value;
struct ipmac_elem *elem = bitmap_ipmac_elem(map, data->id);
if (elem->match == MAC_EMPTY)
return -IPSET_ERR_EXIST;
elem->match = MAC_EMPTY;
return 0;
}
static int
bitmap_ipmac_list(const struct ip_set *set,
struct sk_buff *skb, struct netlink_callback *cb)
{
const struct bitmap_ipmac *map = set->data;
const struct ipmac_elem *elem;
struct nlattr *atd, *nested;
u32 id, first = cb->args[2];
u32 last = map->last_ip - map->first_ip;
atd = ipset_nest_start(skb, IPSET_ATTR_ADT);
if (!atd)
return -EMSGSIZE;
for (; cb->args[2] <= last; cb->args[2]++) {
id = cb->args[2];
elem = bitmap_ipmac_elem(map, id);
if (elem->match == MAC_EMPTY)
continue;
nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
if (!nested) {
if (id == first) {
nla_nest_cancel(skb, atd);
return -EMSGSIZE;
} else
goto nla_put_failure;
}
if (nla_put_ipaddr4(skb, IPSET_ATTR_IP,
htonl(map->first_ip + id)) ||
(elem->match == MAC_FILLED &&
nla_put(skb, IPSET_ATTR_ETHER, ETH_ALEN,
elem->ether)))
goto nla_put_failure;
ipset_nest_end(skb, nested);
}
ipset_nest_end(skb, atd);
/* Set listing finished */
cb->args[2] = 0;
return 0;
nla_put_failure:
nla_nest_cancel(skb, nested);
ipset_nest_end(skb, atd);
if (unlikely(id == first)) {
cb->args[2] = 0;
return -EMSGSIZE;
}
return 0;
}
/* Timeout variant */
static int
bitmap_ipmac_ttest(struct ip_set *set, void *value, u32 timeout, u32 flags)
{
const struct bitmap_ipmac *map = set->data;
const struct ipmac *data = value;
const struct ipmac_elem *elem = bitmap_ipmac_elem(map, data->id);
switch (elem->match) {
case MAC_UNSET:
/* Trigger kernel to fill out the ethernet address */
return -EAGAIN;
case MAC_FILLED:
return (data->ether == NULL ||
ether_addr_equal(data->ether, elem->ether)) &&
!bitmap_expired(map, data->id);
}
return 0;
}
static int
bitmap_ipmac_tadd(struct ip_set *set, void *value, u32 timeout, u32 flags)
{
struct bitmap_ipmac *map = set->data;
const struct ipmac *data = value;
struct ipmac_telem *elem = bitmap_ipmac_elem(map, data->id);
bool flag_exist = flags & IPSET_FLAG_EXIST;
switch (elem->match) {
case MAC_UNSET:
if (!(data->ether || flag_exist))
/* Already added without ethernet address */
return -IPSET_ERR_EXIST;
/* Fill the MAC address and activate the timer */
memcpy(elem->ether, data->ether, ETH_ALEN);
elem->match = MAC_FILLED;
if (timeout == map->timeout)
if (mode == IPSET_ADD_START_STORED_TIMEOUT) {
if (t == map->timeout)
/* Timeout was not specified, get stored one */
timeout = elem->timeout;
elem->timeout = ip_set_timeout_set(timeout);
break;
case MAC_FILLED:
if (!(bitmap_expired(map, data->id) || flag_exist))
return -IPSET_ERR_EXIST;
/* Fall through */
case MAC_EMPTY:
if (data->ether) {
memcpy(elem->ether, data->ether, ETH_ALEN);
elem->match = MAC_FILLED;
} else
elem->match = MAC_UNSET;
t = *timeout;
ip_set_timeout_set(timeout, t);
} else {
/* If MAC is unset yet, we store plain timeout value
* because the timer is not activated yet
* and we can reuse it later when MAC is filled out,
* possibly by the kernel */
elem->timeout = data->ether ? ip_set_timeout_set(timeout)
: timeout;
break;
if (e->ether)
ip_set_timeout_set(timeout, t);
else
*timeout = t;
}
return 0;
}
static int
bitmap_ipmac_tdel(struct ip_set *set, void *value, u32 timeout, u32 flags)
static inline int
bitmap_ipmac_do_add(const struct bitmap_ipmac_adt_elem *e,
struct bitmap_ipmac *map, u32 flags)
{
struct bitmap_ipmac *map = set->data;
const struct ipmac *data = value;
struct ipmac_telem *elem = bitmap_ipmac_elem(map, data->id);
struct bitmap_ipmac_elem *elem;
if (elem->match == MAC_EMPTY || bitmap_expired(map, data->id))
return -IPSET_ERR_EXIST;
elem->match = MAC_EMPTY;
return 0;
elem = get_elem(map->extensions, e->id, map->dsize);
if (test_and_set_bit(e->id, map->members)) {
if (elem->filled == MAC_FILLED) {
if (e->ether && (flags & IPSET_FLAG_EXIST))
memcpy(elem->ether, e->ether, ETH_ALEN);
return IPSET_ADD_FAILED;
} else if (!e->ether)
/* Already added without ethernet address */
return IPSET_ADD_FAILED;
/* Fill the MAC address and trigger the timer activation */
memcpy(elem->ether, e->ether, ETH_ALEN);
elem->filled = MAC_FILLED;
return IPSET_ADD_START_STORED_TIMEOUT;
} else if (e->ether) {
/* We can store MAC too */
memcpy(elem->ether, e->ether, ETH_ALEN);
elem->filled = MAC_FILLED;
return 0;
} else {
elem->filled = MAC_UNSET;
/* MAC is not stored yet, don't start timer */
return IPSET_ADD_STORE_PLAIN_TIMEOUT;
}
}
static int
bitmap_ipmac_tlist(const struct ip_set *set,
struct sk_buff *skb, struct netlink_callback *cb)
static inline int
bitmap_ipmac_do_del(const struct bitmap_ipmac_adt_elem *e,
struct bitmap_ipmac *map)
{
const struct bitmap_ipmac *map = set->data;
const struct ipmac_telem *elem;
struct nlattr *atd, *nested;
u32 id, first = cb->args[2];
u32 timeout, last = map->last_ip - map->first_ip;
return !test_and_clear_bit(e->id, map->members);
}
atd = ipset_nest_start(skb, IPSET_ATTR_ADT);
if (!atd)
return -EMSGSIZE;
for (; cb->args[2] <= last; cb->args[2]++) {
id = cb->args[2];
elem = bitmap_ipmac_elem(map, id);
if (!bitmap_ipmac_exist(elem))
continue;
nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
if (!nested) {
if (id == first) {
nla_nest_cancel(skb, atd);
return -EMSGSIZE;
} else
goto nla_put_failure;
}
if (nla_put_ipaddr4(skb, IPSET_ATTR_IP,
htonl(map->first_ip + id)) ||
(elem->match == MAC_FILLED &&
nla_put(skb, IPSET_ATTR_ETHER, ETH_ALEN,
elem->ether)))
goto nla_put_failure;
timeout = elem->match == MAC_UNSET ? elem->timeout
: ip_set_timeout_get(elem->timeout);
if (nla_put_net32(skb, IPSET_ATTR_TIMEOUT, htonl(timeout)))
goto nla_put_failure;
ipset_nest_end(skb, nested);
}
ipset_nest_end(skb, atd);
/* Set listing finished */
cb->args[2] = 0;
static inline unsigned long
ip_set_timeout_stored(struct bitmap_ipmac *map, u32 id, unsigned long *timeout)
{
const struct bitmap_ipmac_elem *elem =
get_elem(map->extensions, id, map->dsize);
return 0;
return elem->filled == MAC_FILLED ? ip_set_timeout_get(timeout) :
*timeout;
}
nla_put_failure:
nla_nest_cancel(skb, nested);
ipset_nest_end(skb, atd);
if (unlikely(id == first)) {
cb->args[2] = 0;
return -EMSGSIZE;
}
return 0;
static inline int
bitmap_ipmac_do_list(struct sk_buff *skb, const struct bitmap_ipmac *map,
u32 id)
{
const struct bitmap_ipmac_elem *elem =
get_elem(map->extensions, id, map->dsize);
return nla_put_ipaddr4(skb, IPSET_ATTR_IP,
htonl(map->first_ip + id)) ||
(elem->filled == MAC_FILLED &&
nla_put(skb, IPSET_ATTR_ETHER, ETH_ALEN, elem->ether));
}
static inline int
bitmap_ipmac_do_head(struct sk_buff *skb, const struct bitmap_ipmac *map)
{
return nla_put_ipaddr4(skb, IPSET_ATTR_IP, htonl(map->first_ip)) ||
nla_put_ipaddr4(skb, IPSET_ATTR_IP_TO, htonl(map->last_ip));
}
static int
bitmap_ipmac_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
enum ipset_adt adt, const struct ip_set_adt_opt *opt)
enum ipset_adt adt, struct ip_set_adt_opt *opt)
{
struct bitmap_ipmac *map = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct ipmac data;
struct bitmap_ipmac_adt_elem e = {};
struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, map);
u32 ip;
/* MAC can be src only */
if (!(opt->flags & IPSET_DIM_TWO_SRC))
return 0;
data.id = ntohl(ip4addr(skb, opt->flags & IPSET_DIM_ONE_SRC));
if (data.id < map->first_ip || data.id > map->last_ip)
ip = ntohl(ip4addr(skb, opt->flags & IPSET_DIM_ONE_SRC));
if (ip < map->first_ip || ip > map->last_ip)
return -IPSET_ERR_BITMAP_RANGE;
/* Backward compatibility: we don't check the second flag */
@ -368,10 +232,10 @@ bitmap_ipmac_kadt(struct ip_set *set, const struct sk_buff *skb,
(skb_mac_header(skb) + ETH_HLEN) > skb->data)
return -EINVAL;
data.id -= map->first_ip;
data.ether = eth_hdr(skb)->h_source;
e.id = ip_to_id(map, ip);
e.ether = eth_hdr(skb)->h_source;
return adtfn(set, &data, opt_timeout(opt, map), opt->cmdflags);
return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
}
static int
@ -380,8 +244,9 @@ bitmap_ipmac_uadt(struct ip_set *set, struct nlattr *tb[],
{
const struct bitmap_ipmac *map = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct ipmac data;
u32 timeout = map->timeout;
struct bitmap_ipmac_adt_elem e = {};
struct ip_set_ext ext = IP_SET_INIT_UEXT(map);
u32 ip;
int ret = 0;
if (unlikely(!tb[IPSET_ATTR_IP] ||
@ -391,80 +256,25 @@ bitmap_ipmac_uadt(struct ip_set *set, struct nlattr *tb[],
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &data.id);
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip) ||
ip_set_get_extensions(set, tb, &ext);
if (ret)
return ret;
if (data.id < map->first_ip || data.id > map->last_ip)
if (ip < map->first_ip || ip > map->last_ip)
return -IPSET_ERR_BITMAP_RANGE;
e.id = ip_to_id(map, ip);
if (tb[IPSET_ATTR_ETHER])
data.ether = nla_data(tb[IPSET_ATTR_ETHER]);
e.ether = nla_data(tb[IPSET_ATTR_ETHER]);
else
data.ether = NULL;
e.ether = NULL;
if (tb[IPSET_ATTR_TIMEOUT]) {
if (!with_timeout(map->timeout))
return -IPSET_ERR_TIMEOUT;
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
data.id -= map->first_ip;
ret = adtfn(set, &data, timeout, flags);
ret = adtfn(set, &e, &ext, &ext, flags);
return ip_set_eexist(ret, flags) ? 0 : ret;
}
static void
bitmap_ipmac_destroy(struct ip_set *set)
{
struct bitmap_ipmac *map = set->data;
if (with_timeout(map->timeout))
del_timer_sync(&map->gc);
ip_set_free(map->members);
kfree(map);
set->data = NULL;
}
static void
bitmap_ipmac_flush(struct ip_set *set)
{
struct bitmap_ipmac *map = set->data;
memset(map->members, 0,
(map->last_ip - map->first_ip + 1) * map->dsize);
}
static int
bitmap_ipmac_head(struct ip_set *set, struct sk_buff *skb)
{
const struct bitmap_ipmac *map = set->data;
struct nlattr *nested;
nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
if (!nested)
goto nla_put_failure;
if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, htonl(map->first_ip)) ||
nla_put_ipaddr4(skb, IPSET_ATTR_IP_TO, htonl(map->last_ip)) ||
nla_put_net32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref - 1)) ||
nla_put_net32(skb, IPSET_ATTR_MEMSIZE,
htonl(sizeof(*map) +
((map->last_ip - map->first_ip + 1) *
map->dsize))) ||
(with_timeout(map->timeout) &&
nla_put_net32(skb, IPSET_ATTR_TIMEOUT, htonl(map->timeout))))
goto nla_put_failure;
ipset_nest_end(skb, nested);
return 0;
nla_put_failure:
return -EMSGSIZE;
}
static bool
bitmap_ipmac_same_set(const struct ip_set *a, const struct ip_set *b)
{
@ -473,85 +283,43 @@ bitmap_ipmac_same_set(const struct ip_set *a, const struct ip_set *b)
return x->first_ip == y->first_ip &&
x->last_ip == y->last_ip &&
x->timeout == y->timeout;
x->timeout == y->timeout &&
a->extensions == b->extensions;
}
static const struct ip_set_type_variant bitmap_ipmac = {
.kadt = bitmap_ipmac_kadt,
.uadt = bitmap_ipmac_uadt,
.adt = {
[IPSET_ADD] = bitmap_ipmac_add,
[IPSET_DEL] = bitmap_ipmac_del,
[IPSET_TEST] = bitmap_ipmac_test,
},
.destroy = bitmap_ipmac_destroy,
.flush = bitmap_ipmac_flush,
.head = bitmap_ipmac_head,
.list = bitmap_ipmac_list,
.same_set = bitmap_ipmac_same_set,
/* Plain variant */
/* Timeout variant */
struct bitmap_ipmact_elem {
struct {
unsigned char ether[ETH_ALEN];
unsigned char filled;
} __attribute__ ((aligned));
unsigned long timeout;
};
static const struct ip_set_type_variant bitmap_tipmac = {
.kadt = bitmap_ipmac_kadt,
.uadt = bitmap_ipmac_uadt,
.adt = {
[IPSET_ADD] = bitmap_ipmac_tadd,
[IPSET_DEL] = bitmap_ipmac_tdel,
[IPSET_TEST] = bitmap_ipmac_ttest,
},
.destroy = bitmap_ipmac_destroy,
.flush = bitmap_ipmac_flush,
.head = bitmap_ipmac_head,
.list = bitmap_ipmac_tlist,
.same_set = bitmap_ipmac_same_set,
};
static void
bitmap_ipmac_gc(unsigned long ul_set)
{
struct ip_set *set = (struct ip_set *) ul_set;
struct bitmap_ipmac *map = set->data;
struct ipmac_telem *elem;
u32 id, last = map->last_ip - map->first_ip;
/* We run parallel with other readers (test element)
* but adding/deleting new entries is locked out */
read_lock_bh(&set->lock);
for (id = 0; id <= last; id++) {
elem = bitmap_ipmac_elem(map, id);
if (elem->match == MAC_FILLED &&
ip_set_timeout_expired(elem->timeout))
elem->match = MAC_EMPTY;
}
read_unlock_bh(&set->lock);
map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ;
add_timer(&map->gc);
}
static void
bitmap_ipmac_gc_init(struct ip_set *set)
{
struct bitmap_ipmac *map = set->data;
init_timer(&map->gc);
map->gc.data = (unsigned long) set;
map->gc.function = bitmap_ipmac_gc;
map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ;
add_timer(&map->gc);
}
#include "ip_set_bitmap_gen.h"
/* Create bitmap:ip,mac type of sets */
static bool
init_map_ipmac(struct ip_set *set, struct bitmap_ipmac *map,
u32 first_ip, u32 last_ip)
u32 first_ip, u32 last_ip, u32 elements)
{
map->members = ip_set_alloc((last_ip - first_ip + 1) * map->dsize);
if (!map->members)
return false;
if (map->dsize) {
map->extensions = ip_set_alloc(map->dsize * elements);
if (!map->extensions) {
kfree(map->members);
return false;
}
}
map->first_ip = first_ip;
map->last_ip = last_ip;
map->elements = elements;
map->timeout = IPSET_NO_TIMEOUT;
set->data = map;
@ -605,28 +373,28 @@ bitmap_ipmac_create(struct ip_set *set, struct nlattr *tb[],
if (!map)
return -ENOMEM;
map->memsize = bitmap_bytes(0, elements - 1);
set->variant = &bitmap_ipmac;
if (tb[IPSET_ATTR_TIMEOUT]) {
map->dsize = sizeof(struct ipmac_telem);
map->dsize = sizeof(struct bitmap_ipmact_elem);
map->offset[IPSET_OFFSET_TIMEOUT] =
offsetof(struct bitmap_ipmact_elem, timeout);
if (!init_map_ipmac(set, map, first_ip, last_ip)) {
if (!init_map_ipmac(set, map, first_ip, last_ip, elements)) {
kfree(map);
return -ENOMEM;
}
map->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
set->variant = &bitmap_tipmac;
bitmap_ipmac_gc_init(set);
set->extensions |= IPSET_EXT_TIMEOUT;
bitmap_ipmac_gc_init(set, bitmap_ipmac_gc);
} else {
map->dsize = sizeof(struct ipmac_elem);
map->dsize = sizeof(struct bitmap_ipmac_elem);
if (!init_map_ipmac(set, map, first_ip, last_ip)) {
if (!init_map_ipmac(set, map, first_ip, last_ip, elements)) {
kfree(map);
return -ENOMEM;
}
set->variant = &bitmap_ipmac;
}
return 0;
}

371
net/netfilter/ipset/ip_set_bitmap_port.c
View file

@ -1,4 +1,4 @@
/* Copyright (C) 2003-2011 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
/* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -19,8 +19,6 @@
#include <linux/netfilter/ipset/ip_set.h>
#include <linux/netfilter/ipset/ip_set_bitmap.h>
#include <linux/netfilter/ipset/ip_set_getport.h>
#define IP_SET_BITMAP_TIMEOUT
#include <linux/netfilter/ipset/ip_set_timeout.h>
#define REVISION_MIN 0
#define REVISION_MAX 0
@ -30,194 +28,85 @@ MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
IP_SET_MODULE_DESC("bitmap:port", REVISION_MIN, REVISION_MAX);
MODULE_ALIAS("ip_set_bitmap:port");
#define MTYPE bitmap_port
/* Type structure */
struct bitmap_port {
void *members; /* the set members */
void *extensions; /* data extensions */
u16 first_port; /* host byte order, included in range */
u16 last_port; /* host byte order, included in range */
u32 elements; /* number of max elements in the set */
size_t memsize; /* members size */
size_t dsize; /* extensions struct size */
size_t offset[IPSET_OFFSET_MAX]; /* Offsets to extensions */
u32 timeout; /* timeout parameter */
struct timer_list gc; /* garbage collection */
};
/* Base variant */
/* ADT structure for generic function args */
struct bitmap_port_adt_elem {
u16 id;
};
static int
bitmap_port_test(struct ip_set *set, void *value, u32 timeout, u32 flags)
static inline u16
port_to_id(const struct bitmap_port *m, u16 port)
{
const struct bitmap_port *map = set->data;
u16 id = *(u16 *)value;
return port - m->first_port;
}
/* Common functions */
static inline int
bitmap_port_do_test(const struct bitmap_port_adt_elem *e,
const struct bitmap_port *map)
{
return !!test_bit(e->id, map->members);
}
static inline int
bitmap_port_gc_test(u16 id, const struct bitmap_port *map)
{
return !!test_bit(id, map->members);
}
static int
bitmap_port_add(struct ip_set *set, void *value, u32 timeout, u32 flags)
static inline int
bitmap_port_do_add(const struct bitmap_port_adt_elem *e,
struct bitmap_port *map, u32 flags)
{
struct bitmap_port *map = set->data;
u16 id = *(u16 *)value;
if (test_and_set_bit(id, map->members))
return -IPSET_ERR_EXIST;
return 0;
return !!test_and_set_bit(e->id, map->members);
}
static int
bitmap_port_del(struct ip_set *set, void *value, u32 timeout, u32 flags)
static inline int
bitmap_port_do_del(const struct bitmap_port_adt_elem *e,
struct bitmap_port *map)
{
struct bitmap_port *map = set->data;
u16 id = *(u16 *)value;
if (!test_and_clear_bit(id, map->members))
return -IPSET_ERR_EXIST;
return 0;
return !test_and_clear_bit(e->id, map->members);
}
static int
bitmap_port_list(const struct ip_set *set,
struct sk_buff *skb, struct netlink_callback *cb)
static inline int
bitmap_port_do_list(struct sk_buff *skb, const struct bitmap_port *map, u32 id)
{
const struct bitmap_port *map = set->data;
struct nlattr *atd, *nested;
u16 id, first = cb->args[2];
u16 last = map->last_port - map->first_port;
atd = ipset_nest_start(skb, IPSET_ATTR_ADT);
if (!atd)
return -EMSGSIZE;
for (; cb->args[2] <= last; cb->args[2]++) {
id = cb->args[2];
if (!test_bit(id, map->members))
continue;
nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
if (!nested) {
if (id == first) {
nla_nest_cancel(skb, atd);
return -EMSGSIZE;
} else
goto nla_put_failure;
}
if (nla_put_net16(skb, IPSET_ATTR_PORT,
htons(map->first_port + id)))
goto nla_put_failure;
ipset_nest_end(skb, nested);
}
ipset_nest_end(skb, atd);
/* Set listing finished */
cb->args[2] = 0;
return 0;
nla_put_failure:
nla_nest_cancel(skb, nested);
ipset_nest_end(skb, atd);
if (unlikely(id == first)) {
cb->args[2] = 0;
return -EMSGSIZE;
}
return 0;
return nla_put_net16(skb, IPSET_ATTR_PORT,
htons(map->first_port + id));
}
/* Timeout variant */
static int
bitmap_port_ttest(struct ip_set *set, void *value, u32 timeout, u32 flags)
static inline int
bitmap_port_do_head(struct sk_buff *skb, const struct bitmap_port *map)
{
const struct bitmap_port *map = set->data;
const unsigned long *members = map->members;
u16 id = *(u16 *)value;
return ip_set_timeout_test(members[id]);
}
static int
bitmap_port_tadd(struct ip_set *set, void *value, u32 timeout, u32 flags)
{
struct bitmap_port *map = set->data;
unsigned long *members = map->members;
u16 id = *(u16 *)value;
if (ip_set_timeout_test(members[id]) && !(flags & IPSET_FLAG_EXIST))
return -IPSET_ERR_EXIST;
members[id] = ip_set_timeout_set(timeout);
return 0;
}
static int
bitmap_port_tdel(struct ip_set *set, void *value, u32 timeout, u32 flags)
{
struct bitmap_port *map = set->data;
unsigned long *members = map->members;
u16 id = *(u16 *)value;
int ret = -IPSET_ERR_EXIST;
if (ip_set_timeout_test(members[id]))
ret = 0;
members[id] = IPSET_ELEM_UNSET;
return ret;
}
static int
bitmap_port_tlist(const struct ip_set *set,
struct sk_buff *skb, struct netlink_callback *cb)
{
const struct bitmap_port *map = set->data;
struct nlattr *adt, *nested;
u16 id, first = cb->args[2];
u16 last = map->last_port - map->first_port;
const unsigned long *members = map->members;
adt = ipset_nest_start(skb, IPSET_ATTR_ADT);
if (!adt)
return -EMSGSIZE;
for (; cb->args[2] <= last; cb->args[2]++) {
id = cb->args[2];
if (!ip_set_timeout_test(members[id]))
continue;
nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
if (!nested) {
if (id == first) {
nla_nest_cancel(skb, adt);
return -EMSGSIZE;
} else
goto nla_put_failure;
}
if (nla_put_net16(skb, IPSET_ATTR_PORT,
htons(map->first_port + id)) ||
nla_put_net32(skb, IPSET_ATTR_TIMEOUT,
htonl(ip_set_timeout_get(members[id]))))
goto nla_put_failure;
ipset_nest_end(skb, nested);
}
ipset_nest_end(skb, adt);
/* Set listing finished */
cb->args[2] = 0;
return 0;
nla_put_failure:
nla_nest_cancel(skb, nested);
ipset_nest_end(skb, adt);
if (unlikely(id == first)) {
cb->args[2] = 0;
return -EMSGSIZE;
}
return 0;
return nla_put_net16(skb, IPSET_ATTR_PORT, htons(map->first_port)) ||
nla_put_net16(skb, IPSET_ATTR_PORT_TO, htons(map->last_port));
}
static int
bitmap_port_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
enum ipset_adt adt, const struct ip_set_adt_opt *opt)
enum ipset_adt adt, struct ip_set_adt_opt *opt)
{
struct bitmap_port *map = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct bitmap_port_adt_elem e = {};
struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, map);
__be16 __port;
u16 port = 0;
@ -230,9 +119,9 @@ bitmap_port_kadt(struct ip_set *set, const struct sk_buff *skb,
if (port < map->first_port || port > map->last_port)
return -IPSET_ERR_BITMAP_RANGE;
port -= map->first_port;
e.id = port_to_id(map, port);
return adtfn(set, &port, opt_timeout(opt, map), opt->cmdflags);
return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
}
static int
@ -241,9 +130,10 @@ bitmap_port_uadt(struct ip_set *set, struct nlattr *tb[],
{
struct bitmap_port *map = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
u32 timeout = map->timeout;
struct bitmap_port_adt_elem e = {};
struct ip_set_ext ext = IP_SET_INIT_UEXT(map);
u32 port; /* wraparound */
u16 id, port_to;
u16 port_to;
int ret = 0;
if (unlikely(!ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
@ -257,16 +147,13 @@ bitmap_port_uadt(struct ip_set *set, struct nlattr *tb[],
port = ip_set_get_h16(tb[IPSET_ATTR_PORT]);
if (port < map->first_port || port > map->last_port)
return -IPSET_ERR_BITMAP_RANGE;
if (tb[IPSET_ATTR_TIMEOUT]) {
if (!with_timeout(map->timeout))
return -IPSET_ERR_TIMEOUT;
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
ret = ip_set_get_extensions(set, tb, &ext);
if (ret)
return ret;
if (adt == IPSET_TEST) {
id = port - map->first_port;
return adtfn(set, &id, timeout, flags);
e.id = port_to_id(map, port);
return adtfn(set, &e, &ext, &ext, flags);
}
if (tb[IPSET_ATTR_PORT_TO]) {
@ -283,8 +170,8 @@ bitmap_port_uadt(struct ip_set *set, struct nlattr *tb[],
return -IPSET_ERR_BITMAP_RANGE;
for (; port <= port_to; port++) {
id = port - map->first_port;
ret = adtfn(set, &id, timeout, flags);
e.id = port_to_id(map, port);
ret = adtfn(set, &e, &ext, &ext, flags);
if (ret && !ip_set_eexist(ret, flags))
return ret;
@ -294,52 +181,6 @@ bitmap_port_uadt(struct ip_set *set, struct nlattr *tb[],
return ret;
}
static void
bitmap_port_destroy(struct ip_set *set)
{
struct bitmap_port *map = set->data;
if (with_timeout(map->timeout))
del_timer_sync(&map->gc);
ip_set_free(map->members);
kfree(map);
set->data = NULL;
}
static void
bitmap_port_flush(struct ip_set *set)
{
struct bitmap_port *map = set->data;
memset(map->members, 0, map->memsize);
}
static int
bitmap_port_head(struct ip_set *set, struct sk_buff *skb)
{
const struct bitmap_port *map = set->data;
struct nlattr *nested;
nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
if (!nested)
goto nla_put_failure;
if (nla_put_net16(skb, IPSET_ATTR_PORT, htons(map->first_port)) ||
nla_put_net16(skb, IPSET_ATTR_PORT_TO, htons(map->last_port)) ||
nla_put_net32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref - 1)) ||
nla_put_net32(skb, IPSET_ATTR_MEMSIZE,
htonl(sizeof(*map) + map->memsize)) ||
(with_timeout(map->timeout) &&
nla_put_net32(skb, IPSET_ATTR_TIMEOUT, htonl(map->timeout))))
goto nla_put_failure;
ipset_nest_end(skb, nested);
return 0;
nla_put_failure:
return -EMSGSIZE;
}
static bool
bitmap_port_same_set(const struct ip_set *a, const struct ip_set *b)
{
@ -348,71 +189,21 @@ bitmap_port_same_set(const struct ip_set *a, const struct ip_set *b)
return x->first_port == y->first_port &&
x->last_port == y->last_port &&
x->timeout == y->timeout;
x->timeout == y->timeout &&
a->extensions == b->extensions;
}
static const struct ip_set_type_variant bitmap_port = {
.kadt = bitmap_port_kadt,
.uadt = bitmap_port_uadt,
.adt = {
[IPSET_ADD] = bitmap_port_add,
[IPSET_DEL] = bitmap_port_del,
[IPSET_TEST] = bitmap_port_test,
},
.destroy = bitmap_port_destroy,
.flush = bitmap_port_flush,
.head = bitmap_port_head,
.list = bitmap_port_list,
.same_set = bitmap_port_same_set,
/* Plain variant */
struct bitmap_port_elem {
};
static const struct ip_set_type_variant bitmap_tport = {
.kadt = bitmap_port_kadt,
.uadt = bitmap_port_uadt,
.adt = {
[IPSET_ADD] = bitmap_port_tadd,
[IPSET_DEL] = bitmap_port_tdel,
[IPSET_TEST] = bitmap_port_ttest,
},
.destroy = bitmap_port_destroy,
.flush = bitmap_port_flush,
.head = bitmap_port_head,
.list = bitmap_port_tlist,
.same_set = bitmap_port_same_set,
/* Timeout variant */
struct bitmap_portt_elem {
unsigned long timeout;
};
static void
bitmap_port_gc(unsigned long ul_set)
{
struct ip_set *set = (struct ip_set *) ul_set;
struct bitmap_port *map = set->data;
unsigned long *table = map->members;
u32 id; /* wraparound */
u16 last = map->last_port - map->first_port;
/* We run parallel with other readers (test element)
* but adding/deleting new entries is locked out */
read_lock_bh(&set->lock);
for (id = 0; id <= last; id++)
if (ip_set_timeout_expired(table[id]))
table[id] = IPSET_ELEM_UNSET;
read_unlock_bh(&set->lock);
map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ;
add_timer(&map->gc);
}
static void
bitmap_port_gc_init(struct ip_set *set)
{
struct bitmap_port *map = set->data;
init_timer(&map->gc);
map->gc.data = (unsigned long) set;
map->gc.function = bitmap_port_gc;
map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ;
add_timer(&map->gc);
}
#include "ip_set_bitmap_gen.h"
/* Create bitmap:ip type of sets */
@ -423,6 +214,13 @@ init_map_port(struct ip_set *set, struct bitmap_port *map,
map->members = ip_set_alloc(map->memsize);
if (!map->members)
return false;
if (map->dsize) {
map->extensions = ip_set_alloc(map->dsize * map->elements);
if (!map->extensions) {
kfree(map->members);
return false;
}
}
map->first_port = first_port;
map->last_port = last_port;
map->timeout = IPSET_NO_TIMEOUT;
@ -434,8 +232,7 @@ init_map_port(struct ip_set *set, struct bitmap_port *map,
}
static int
bitmap_port_create(struct ip_set *set, struct nlattr *tb[],
u32 flags)
bitmap_port_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
{
struct bitmap_port *map;
u16 first_port, last_port;
@ -458,28 +255,28 @@ bitmap_port_create(struct ip_set *set, struct nlattr *tb[],
if (!map)
return -ENOMEM;
map->elements = last_port - first_port + 1;
map->memsize = map->elements * sizeof(unsigned long);
set->variant = &bitmap_port;
if (tb[IPSET_ATTR_TIMEOUT]) {
map->memsize = (last_port - first_port + 1)
* sizeof(unsigned long);
map->dsize = sizeof(struct bitmap_portt_elem);
map->offset[IPSET_OFFSET_TIMEOUT] =
offsetof(struct bitmap_portt_elem, timeout);
if (!init_map_port(set, map, first_port, last_port)) {
kfree(map);
return -ENOMEM;
}
map->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
set->variant = &bitmap_tport;
bitmap_port_gc_init(set);
set->extensions |= IPSET_EXT_TIMEOUT;
bitmap_port_gc_init(set, bitmap_port_gc);
} else {
map->memsize = bitmap_bytes(0, last_port - first_port);
pr_debug("memsize: %zu\n", map->memsize);
map->dsize = 0;
if (!init_map_port(set, map, first_port, last_port)) {
kfree(map);
return -ENOMEM;
}
set->variant = &bitmap_port;
}
return 0;
}