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netfilter: ipset: list:set type using the extension interface 

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 2013-04-04 12:21:02 +02:00 committed by Pablo Neira Ayuso
parent 5d50e1d883
commit 7d47d972b5
1 changed files with 322 additions and 267 deletions
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589
net/netfilter/ipset/ip_set_list_set.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 2008-2011 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
/* Copyright (C) 2008-2013 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
@ -13,7 +13,6 @@
#include <linux/errno.h>
#include <linux/netfilter/ipset/ip_set.h>
#include <linux/netfilter/ipset/ip_set_timeout.h>
#include <linux/netfilter/ipset/ip_set_list.h>
#define REVISION_MIN 0
@ -24,19 +23,28 @@ MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
IP_SET_MODULE_DESC("list:set", REVISION_MIN, REVISION_MAX);
MODULE_ALIAS("ip_set_list:set");
/* Member elements without and with timeout */
/* Member elements */
struct set_elem {
ip_set_id_t id;
};
struct set_telem {
ip_set_id_t id;
struct sett_elem {
struct {
ip_set_id_t id;
} __attribute__ ((aligned));
unsigned long timeout;
};
struct set_adt_elem {
ip_set_id_t id;
ip_set_id_t refid;
int before;
};
/* Type structure */
struct list_set {
size_t dsize; /* element size */
size_t offset[IPSET_OFFSET_MAX]; /* Offsets to extensions */
u32 size; /* size of set list array */
u32 timeout; /* timeout value */
struct timer_list gc; /* garbage collection */
@ -49,194 +57,307 @@ list_set_elem(const struct list_set *map, u32 id)
return (struct set_elem *)((void *)map->members + id * map->dsize);
}
static inline struct set_telem *
list_set_telem(const struct list_set *map, u32 id)
{
return (struct set_telem *)((void *)map->members + id * map->dsize);
}
static inline bool
list_set_timeout(const struct list_set *map, u32 id)
{
const struct set_telem *elem = list_set_telem(map, id);
return ip_set_timeout_test(elem->timeout);
}
static inline bool
list_set_expired(const struct list_set *map, u32 id)
{
const struct set_telem *elem = list_set_telem(map, id);
return ip_set_timeout_expired(elem->timeout);
}
/* Set list without and with timeout */
#define ext_timeout(e, m) \
(unsigned long *)((void *)(e) + (m)->offset[IPSET_OFFSET_TIMEOUT])
static int
list_set_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)
list_set_ktest(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
struct ip_set_adt_opt *opt, const struct ip_set_ext *ext)
{
struct list_set *map = set->data;
struct set_elem *elem;
struct set_elem *e;
u32 i;
int ret;
for (i = 0; i < map->size; i++) {
elem = list_set_elem(map, i);
if (elem->id == IPSET_INVALID_ID)
e = list_set_elem(map, i);
if (e->id == IPSET_INVALID_ID)
return 0;
if (with_timeout(map->timeout) && list_set_expired(map, i))
if (SET_WITH_TIMEOUT(set) &&
ip_set_timeout_expired(ext_timeout(e, map)))
continue;
switch (adt) {
case IPSET_TEST:
ret = ip_set_test(elem->id, skb, par, opt);
if (ret > 0)
return ret;
break;
case IPSET_ADD:
ret = ip_set_add(elem->id, skb, par, opt);
if (ret == 0)
return ret;
break;
case IPSET_DEL:
ret = ip_set_del(elem->id, skb, par, opt);
if (ret == 0)
return ret;
break;
default:
break;
}
ret = ip_set_test(e->id, skb, par, opt);
if (ret > 0)
return ret;
}
return 0;
}
static int
list_set_kadd(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
struct ip_set_adt_opt *opt, const struct ip_set_ext *ext)
{
struct list_set *map = set->data;
struct set_elem *e;
u32 i;
int ret;
for (i = 0; i < map->size; i++) {
e = list_set_elem(map, i);
if (e->id == IPSET_INVALID_ID)
return 0;
if (SET_WITH_TIMEOUT(set) &&
ip_set_timeout_expired(ext_timeout(e, map)))
continue;
ret = ip_set_add(e->id, skb, par, opt);
if (ret == 0)
return ret;
}
return 0;
}
static int
list_set_kdel(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
struct ip_set_adt_opt *opt, const struct ip_set_ext *ext)
{
struct list_set *map = set->data;
struct set_elem *e;
u32 i;
int ret;
for (i = 0; i < map->size; i++) {
e = list_set_elem(map, i);
if (e->id == IPSET_INVALID_ID)
return 0;
if (SET_WITH_TIMEOUT(set) &&
ip_set_timeout_expired(ext_timeout(e, map)))
continue;
ret = ip_set_del(e->id, skb, par, opt);
if (ret == 0)
return ret;
}
return 0;
}
static int
list_set_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
enum ipset_adt adt, struct ip_set_adt_opt *opt)
{
struct list_set *map = set->data;
struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, map);
switch (adt) {
case IPSET_TEST:
return list_set_ktest(set, skb, par, opt, &ext);
case IPSET_ADD:
return list_set_kadd(set, skb, par, opt, &ext);
case IPSET_DEL:
return list_set_kdel(set, skb, par, opt, &ext);
default:
break;
}
return -EINVAL;
}
static bool
id_eq(const struct list_set *map, u32 i, ip_set_id_t id)
id_eq(const struct ip_set *set, u32 i, ip_set_id_t id)
{
const struct set_elem *elem;
const struct list_set *map = set->data;
const struct set_elem *e;
if (i < map->size) {
elem = list_set_elem(map, i);
return elem->id == id;
}
if (i >= map->size)
return 0;
return 0;
}
static bool
id_eq_timeout(const struct list_set *map, u32 i, ip_set_id_t id)
{
const struct set_elem *elem;
if (i < map->size) {
elem = list_set_elem(map, i);
return !!(elem->id == id &&
!(with_timeout(map->timeout) &&
list_set_expired(map, i)));
}
return 0;
}
static void
list_elem_add(struct list_set *map, u32 i, ip_set_id_t id)
{
struct set_elem *e;
for (; i < map->size; i++) {
e = list_set_elem(map, i);
swap(e->id, id);
if (e->id == IPSET_INVALID_ID)
break;
}
}
static void
list_elem_tadd(struct list_set *map, u32 i, ip_set_id_t id,
unsigned long timeout)
{
struct set_telem *e;
for (; i < map->size; i++) {
e = list_set_telem(map, i);
swap(e->id, id);
swap(e->timeout, timeout);
if (e->id == IPSET_INVALID_ID)
break;
}
e = list_set_elem(map, i);
return !!(e->id == id &&
!(SET_WITH_TIMEOUT(set) &&
ip_set_timeout_expired(ext_timeout(e, map))));
}
static int
list_set_add(struct list_set *map, u32 i, ip_set_id_t id,
unsigned long timeout)
list_set_add(struct ip_set *set, u32 i, struct set_adt_elem *d,
const struct ip_set_ext *ext)
{
const struct set_elem *e = list_set_elem(map, i);
struct list_set *map = set->data;
struct set_elem *e = list_set_elem(map, i);
if (e->id != IPSET_INVALID_ID) {
const struct set_elem *x = list_set_elem(map, map->size - 1);
if (i == map->size - 1)
/* Last element replaced: e.g. add new,before,last */
ip_set_put_byindex(e->id);
else {
struct set_elem *x = list_set_elem(map, map->size - 1);
/* Last element replaced or pushed off */
if (x->id != IPSET_INVALID_ID)
ip_set_put_byindex(x->id);
/* Last element pushed off */
if (x->id != IPSET_INVALID_ID)
ip_set_put_byindex(x->id);
memmove(list_set_elem(map, i + 1), e,
map->dsize * (map->size - (i + 1)));
}
}
if (with_timeout(map->timeout))
list_elem_tadd(map, i, id, ip_set_timeout_set(timeout));
else
list_elem_add(map, i, id);
e->id = d->id;
if (SET_WITH_TIMEOUT(set))
ip_set_timeout_set(ext_timeout(e, map), ext->timeout);
return 0;
}
static int
list_set_del(struct list_set *map, u32 i)
list_set_del(struct ip_set *set, u32 i)
{
struct set_elem *a = list_set_elem(map, i), *b;
struct list_set *map = set->data;
struct set_elem *e = list_set_elem(map, i);
ip_set_put_byindex(a->id);
ip_set_put_byindex(e->id);
if (i < map->size - 1)
memmove(e, list_set_elem(map, i + 1),
map->dsize * (map->size - (i + 1)));
for (; i < map->size - 1; i++) {
b = list_set_elem(map, i + 1);
a->id = b->id;
if (with_timeout(map->timeout))
((struct set_telem *)a)->timeout =
((struct set_telem *)b)->timeout;
a = b;
if (a->id == IPSET_INVALID_ID)
break;
}
/* Last element */
a->id = IPSET_INVALID_ID;
e = list_set_elem(map, map->size - 1);
e->id = IPSET_INVALID_ID;
return 0;
}
static void
cleanup_entries(struct list_set *map)
set_cleanup_entries(struct ip_set *set)
{
struct set_telem *e;
struct list_set *map = set->data;
struct set_elem *e;
u32 i;
for (i = 0; i < map->size; i++) {
e = list_set_telem(map, i);
if (e->id != IPSET_INVALID_ID && list_set_expired(map, i))
list_set_del(map, i);
e = list_set_elem(map, i);
if (e->id != IPSET_INVALID_ID &&
ip_set_timeout_expired(ext_timeout(e, map)))
list_set_del(set, i);
}
}
static int
list_set_utest(struct ip_set *set, void *value, const struct ip_set_ext *ext,
struct ip_set_ext *mext, u32 flags)
{
struct list_set *map = set->data;
struct set_adt_elem *d = value;
struct set_elem *e;
u32 i;
int ret;
for (i = 0; i < map->size; i++) {
e = list_set_elem(map, i);
if (e->id == IPSET_INVALID_ID)
return 0;
else if (SET_WITH_TIMEOUT(set) &&
ip_set_timeout_expired(ext_timeout(e, map)))
continue;
else if (e->id != d->id)
continue;
if (d->before == 0)
return 1;
else if (d->before > 0)
ret = id_eq(set, i + 1, d->refid);
else
ret = i > 0 && id_eq(set, i - 1, d->refid);
return ret;
}
return 0;
}
static int
list_set_uadd(struct ip_set *set, void *value, const struct ip_set_ext *ext,
struct ip_set_ext *mext, u32 flags)
{
struct list_set *map = set->data;
struct set_adt_elem *d = value;
struct set_elem *e;
bool flag_exist = flags & IPSET_FLAG_EXIST;
u32 i, ret = 0;
/* Check already added element */
for (i = 0; i < map->size; i++) {
e = list_set_elem(map, i);
if (e->id == IPSET_INVALID_ID)
goto insert;
else if (SET_WITH_TIMEOUT(set) &&
ip_set_timeout_expired(ext_timeout(e, map)))
continue;
else if (e->id != d->id)
continue;
if ((d->before > 1 && !id_eq(set, i + 1, d->refid)) ||
(d->before < 0 &&
(i == 0 || !id_eq(set, i - 1, d->refid))))
/* Before/after doesn't match */
return -IPSET_ERR_REF_EXIST;
if (!flag_exist)
/* Can't re-add */
return -IPSET_ERR_EXIST;
/* Update extensions */
if (SET_WITH_TIMEOUT(set))
ip_set_timeout_set(ext_timeout(e, map), ext->timeout);
/* Set is already added to the list */
ip_set_put_byindex(d->id);
return 0;
}
insert:
ret = -IPSET_ERR_LIST_FULL;
for (i = 0; i < map->size && ret == -IPSET_ERR_LIST_FULL; i++) {
e = list_set_elem(map, i);
if (e->id == IPSET_INVALID_ID)
ret = d->before != 0 ? -IPSET_ERR_REF_EXIST
: list_set_add(set, i, d, ext);
else if (e->id != d->refid)
continue;
else if (d->before > 0)
ret = list_set_add(set, i, d, ext);
else if (i + 1 < map->size)
ret = list_set_add(set, i + 1, d, ext);
}
return ret;
}
static int
list_set_udel(struct ip_set *set, void *value, const struct ip_set_ext *ext,
struct ip_set_ext *mext, u32 flags)
{
struct list_set *map = set->data;
struct set_adt_elem *d = value;
struct set_elem *e;
u32 i;
for (i = 0; i < map->size; i++) {
e = list_set_elem(map, i);
if (e->id == IPSET_INVALID_ID)
return d->before != 0 ? -IPSET_ERR_REF_EXIST
: -IPSET_ERR_EXIST;
else if (SET_WITH_TIMEOUT(set) &&
ip_set_timeout_expired(ext_timeout(e, map)))
continue;
else if (e->id != d->id)
continue;
if (d->before == 0)
return list_set_del(set, i);
else if (d->before > 0) {
if (!id_eq(set, i + 1, d->refid))
return -IPSET_ERR_REF_EXIST;
return list_set_del(set, i);
} else if (i == 0 || !id_eq(set, i - 1, d->refid))
return -IPSET_ERR_REF_EXIST;
else
return list_set_del(set, i);
}
return -IPSET_ERR_EXIST;
}
static int
list_set_uadt(struct ip_set *set, struct nlattr *tb[],
enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
{
struct list_set *map = set->data;
bool with_timeout = with_timeout(map->timeout);
bool flag_exist = flags & IPSET_FLAG_EXIST;
int before = 0;
u32 timeout = map->timeout;
ip_set_id_t id, refid = IPSET_INVALID_ID;
const struct set_elem *elem;
ipset_adtfn adtfn = set->variant->adt[adt];
struct set_adt_elem e = { .refid = IPSET_INVALID_ID };
struct ip_set_ext ext = IP_SET_INIT_UEXT(map);
struct ip_set *s;
u32 i;
int ret = 0;
if (unlikely(!tb[IPSET_ATTR_NAME] ||
@ -247,8 +368,11 @@ list_set_uadt(struct ip_set *set, struct nlattr *tb[],
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
id = ip_set_get_byname(nla_data(tb[IPSET_ATTR_NAME]), &s);
if (id == IPSET_INVALID_ID)
ret = ip_set_get_extensions(set, tb, &ext);
if (ret)
return ret;
e.id = ip_set_get_byname(nla_data(tb[IPSET_ATTR_NAME]), &s);
if (e.id == IPSET_INVALID_ID)
return -IPSET_ERR_NAME;
/* "Loop detection" */
if (s->type->features & IPSET_TYPE_NAME) {
@ -258,115 +382,34 @@ list_set_uadt(struct ip_set *set, struct nlattr *tb[],
if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 f = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
before = f & IPSET_FLAG_BEFORE;
e.before = f & IPSET_FLAG_BEFORE;
}
if (before && !tb[IPSET_ATTR_NAMEREF]) {
if (e.before && !tb[IPSET_ATTR_NAMEREF]) {
ret = -IPSET_ERR_BEFORE;
goto finish;
}
if (tb[IPSET_ATTR_NAMEREF]) {
refid = ip_set_get_byname(nla_data(tb[IPSET_ATTR_NAMEREF]),
&s);
if (refid == IPSET_INVALID_ID) {
e.refid = ip_set_get_byname(nla_data(tb[IPSET_ATTR_NAMEREF]),
&s);
if (e.refid == IPSET_INVALID_ID) {
ret = -IPSET_ERR_NAMEREF;
goto finish;
}
if (!before)
before = -1;
if (!e.before)
e.before = -1;
}
if (tb[IPSET_ATTR_TIMEOUT]) {
if (!with_timeout) {
ret = -IPSET_ERR_TIMEOUT;
goto finish;
}
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
if (with_timeout && adt != IPSET_TEST)
cleanup_entries(map);
if (adt != IPSET_TEST && SET_WITH_TIMEOUT(set))
set_cleanup_entries(set);
switch (adt) {
case IPSET_TEST:
for (i = 0; i < map->size && !ret; i++) {
elem = list_set_elem(map, i);
if (elem->id == IPSET_INVALID_ID ||
(before != 0 && i + 1 >= map->size))
break;
else if (with_timeout && list_set_expired(map, i))
continue;
else if (before > 0 && elem->id == id)
ret = id_eq_timeout(map, i + 1, refid);
else if (before < 0 && elem->id == refid)
ret = id_eq_timeout(map, i + 1, id);
else if (before == 0 && elem->id == id)
ret = 1;
}
break;
case IPSET_ADD:
for (i = 0; i < map->size; i++) {
elem = list_set_elem(map, i);
if (elem->id != id)
continue;
if (!(with_timeout && flag_exist)) {
ret = -IPSET_ERR_EXIST;
goto finish;
} else {
struct set_telem *e = list_set_telem(map, i);
if ((before > 1 &&
!id_eq(map, i + 1, refid)) ||
(before < 0 &&
(i == 0 || !id_eq(map, i - 1, refid)))) {
ret = -IPSET_ERR_EXIST;
goto finish;
}
e->timeout = ip_set_timeout_set(timeout);
ip_set_put_byindex(id);
ret = 0;
goto finish;
}
}
ret = -IPSET_ERR_LIST_FULL;
for (i = 0; i < map->size && ret == -IPSET_ERR_LIST_FULL; i++) {
elem = list_set_elem(map, i);
if (elem->id == IPSET_INVALID_ID)
ret = before != 0 ? -IPSET_ERR_REF_EXIST
: list_set_add(map, i, id, timeout);
else if (elem->id != refid)
continue;
else if (before > 0)
ret = list_set_add(map, i, id, timeout);
else if (i + 1 < map->size)
ret = list_set_add(map, i + 1, id, timeout);
}
break;
case IPSET_DEL:
ret = -IPSET_ERR_EXIST;
for (i = 0; i < map->size && ret == -IPSET_ERR_EXIST; i++) {
elem = list_set_elem(map, i);
if (elem->id == IPSET_INVALID_ID) {
ret = before != 0 ? -IPSET_ERR_REF_EXIST
: -IPSET_ERR_EXIST;
break;
} else if (elem->id == id &&
(before == 0 ||
(before > 0 && id_eq(map, i + 1, refid))))
ret = list_set_del(map, i);
else if (elem->id == refid &&
before < 0 && id_eq(map, i + 1, id))
ret = list_set_del(map, i + 1);
}
break;
default:
break;
}
ret = adtfn(set, &e, &ext, &ext, flags);
finish:
if (refid != IPSET_INVALID_ID)
ip_set_put_byindex(refid);
if (e.refid != IPSET_INVALID_ID)
ip_set_put_byindex(e.refid);
if (adt != IPSET_ADD || ret)
ip_set_put_byindex(id);
ip_set_put_byindex(e.id);
return ip_set_eexist(ret, flags) ? 0 : ret;
}
@ -375,14 +418,14 @@ static void
list_set_flush(struct ip_set *set)
{
struct list_set *map = set->data;
struct set_elem *elem;
struct set_elem *e;
u32 i;
for (i = 0; i < map->size; i++) {
elem = list_set_elem(map, i);
if (elem->id != IPSET_INVALID_ID) {
ip_set_put_byindex(elem->id);
elem->id = IPSET_INVALID_ID;
e = list_set_elem(map, i);
if (e->id != IPSET_INVALID_ID) {
ip_set_put_byindex(e->id);
e->id = IPSET_INVALID_ID;
}
}
}
@ -392,7 +435,7 @@ list_set_destroy(struct ip_set *set)
{
struct list_set *map = set->data;
if (with_timeout(map->timeout))
if (SET_WITH_TIMEOUT(set))
del_timer_sync(&map->gc);
list_set_flush(set);
kfree(map);
@ -410,7 +453,7 @@ list_set_head(struct ip_set *set, struct sk_buff *skb)
if (!nested)
goto nla_put_failure;
if (nla_put_net32(skb, IPSET_ATTR_SIZE, htonl(map->size)) ||
(with_timeout(map->timeout) &&
(SET_WITH_TIMEOUT(set) &&
nla_put_net32(skb, IPSET_ATTR_TIMEOUT, htonl(map->timeout))) ||
nla_put_net32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref - 1)) ||
nla_put_net32(skb, IPSET_ATTR_MEMSIZE,
@ -440,7 +483,8 @@ list_set_list(const struct ip_set *set,
e = list_set_elem(map, i);
if (e->id == IPSET_INVALID_ID)
goto finish;
if (with_timeout(map->timeout) && list_set_expired(map, i))
if (SET_WITH_TIMEOUT(set) &&
ip_set_timeout_expired(ext_timeout(e, map)))
continue;
nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
if (!nested) {
@ -453,13 +497,11 @@ list_set_list(const struct ip_set *set,
if (nla_put_string(skb, IPSET_ATTR_NAME,
ip_set_name_byindex(e->id)))
goto nla_put_failure;
if (with_timeout(map->timeout)) {
const struct set_telem *te =
(const struct set_telem *) e;
__be32 to = htonl(ip_set_timeout_get(te->timeout));
if (nla_put_net32(skb, IPSET_ATTR_TIMEOUT, to))
goto nla_put_failure;
}
if (SET_WITH_TIMEOUT(set) &&
nla_put_net32(skb, IPSET_ATTR_TIMEOUT,
htonl(ip_set_timeout_get(
ext_timeout(e, map)))))
goto nla_put_failure;
ipset_nest_end(skb, nested);
}
finish:
@ -485,12 +527,18 @@ list_set_same_set(const struct ip_set *a, const struct ip_set *b)
const struct list_set *y = b->data;
return x->size == y->size &&
x->timeout == y->timeout;
x->timeout == y->timeout &&
a->extensions == b->extensions;
}
static const struct ip_set_type_variant list_set = {
static const struct ip_set_type_variant set_variant = {
.kadt = list_set_kadt,
.uadt = list_set_uadt,
.adt = {
[IPSET_ADD] = list_set_uadd,
[IPSET_DEL] = list_set_udel,
[IPSET_TEST] = list_set_utest,
},
.destroy = list_set_destroy,
.flush = list_set_flush,
.head = list_set_head,
@ -505,7 +553,7 @@ list_set_gc(unsigned long ul_set)
struct list_set *map = set->data;
write_lock_bh(&set->lock);
cleanup_entries(map);
set_cleanup_entries(set);
write_unlock_bh(&set->lock);
map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ;
@ -513,20 +561,20 @@ list_set_gc(unsigned long ul_set)
}
static void
list_set_gc_init(struct ip_set *set)
list_set_gc_init(struct ip_set *set, void (*gc)(unsigned long ul_set))
{
struct list_set *map = set->data;
init_timer(&map->gc);
map->gc.data = (unsigned long) set;
map->gc.function = list_set_gc;
map->gc.function = gc;
map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ;
add_timer(&map->gc);
}
/* Create list:set type of sets */
static bool
static struct list_set *
init_list_set(struct ip_set *set, u32 size, size_t dsize,
unsigned long timeout)
{
@ -536,7 +584,7 @@ init_list_set(struct ip_set *set, u32 size, size_t dsize,
map = kzalloc(sizeof(*map) + size * dsize, GFP_KERNEL);
if (!map)
return false;
return NULL;
map->size = size;
map->dsize = dsize;
@ -548,13 +596,15 @@ init_list_set(struct ip_set *set, u32 size, size_t dsize,
e->id = IPSET_INVALID_ID;
}
return true;
return map;
}
static int
list_set_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
{
struct list_set *map;
u32 size = IP_SET_LIST_DEFAULT_SIZE;
unsigned long timeout = 0;
if (unlikely(!ip_set_optattr_netorder(tb, IPSET_ATTR_SIZE) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT)))
@ -565,18 +615,23 @@ list_set_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
if (size < IP_SET_LIST_MIN_SIZE)
size = IP_SET_LIST_MIN_SIZE;
if (tb[IPSET_ATTR_TIMEOUT])
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
set->variant = &set_variant;
if (tb[IPSET_ATTR_TIMEOUT]) {
if (!init_list_set(set, size, sizeof(struct set_telem),
ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT])))
map = init_list_set(set, size,
sizeof(struct sett_elem), timeout);
if (!map)
return -ENOMEM;
list_set_gc_init(set);
set->extensions |= IPSET_EXT_TIMEOUT;
map->offset[IPSET_OFFSET_TIMEOUT] =
offsetof(struct sett_elem, timeout);
list_set_gc_init(set, list_set_gc);
} else {
if (!init_list_set(set, size, sizeof(struct set_elem),
IPSET_NO_TIMEOUT))
map = init_list_set(set, size, sizeof(struct set_elem), 0);
if (!map)
return -ENOMEM;
}
set->variant = &list_set;
return 0;
}