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netfiler: ipset: Add net namespace for ipset

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This patch adds netns support for ipset.

Major changes were made in ip_set_core.c and ip_set.h.
Global variables are moved to per net namespace.
Added initialization code and the destruction of the network namespace ipset subsystem.
In the prototypes of public functions ip_set_* added parameter "struct net*".

The remaining corrections related to the change prototypes of public functions ip_set_*.

The patch for git://git.netfilter.org/ipset.git commit 6a4ec96c0b8caac5c35474e40e319704d92ca347

Signed-off-by: Vitaly Lavrov <lve@guap.ru>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
This commit is contained in:
Vitaly Lavrov 2013-09-30 17:07:02 +02:00 committed by Jozsef Kadlecsik
parent 3fd986b3d9
commit 1785e8f473
9 changed files with 249 additions and 152 deletions
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16
include/linux/netfilter/ipset/ip_set.h
View file

@ -184,7 +184,8 @@ struct ip_set_type {
u8 revision_min, revision_max;
/* Create set */
int (*create)(struct ip_set *set, struct nlattr *tb[], u32 flags);
int (*create)(struct net *net, struct ip_set *set,
struct nlattr *tb[], u32 flags);
/* Attribute policies */
const struct nla_policy create_policy[IPSET_ATTR_CREATE_MAX + 1];
@ -316,12 +317,13 @@ ip_set_init_counter(struct ip_set_counter *counter,
}
/* register and unregister set references */
extern ip_set_id_t ip_set_get_byname(const char *name, struct ip_set **set);
extern void ip_set_put_byindex(ip_set_id_t index);
extern const char *ip_set_name_byindex(ip_set_id_t index);
extern ip_set_id_t ip_set_nfnl_get(const char *name);
extern ip_set_id_t ip_set_nfnl_get_byindex(ip_set_id_t index);
extern void ip_set_nfnl_put(ip_set_id_t index);
extern ip_set_id_t ip_set_get_byname(struct net *net,
const char *name, struct ip_set **set);
extern void ip_set_put_byindex(struct net *net, ip_set_id_t index);
extern const char *ip_set_name_byindex(struct net *net, ip_set_id_t index);
extern ip_set_id_t ip_set_nfnl_get(struct net *net, const char *name);
extern ip_set_id_t ip_set_nfnl_get_byindex(struct net *net, ip_set_id_t index);
extern void ip_set_nfnl_put(struct net *net, ip_set_id_t index);
/* API for iptables set match, and SET target */

3
net/netfilter/ipset/ip_set_bitmap_ip.c
View file

@ -242,7 +242,8 @@ init_map_ip(struct ip_set *set, struct bitmap_ip *map,
}
static int
bitmap_ip_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
bitmap_ip_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
u32 flags)
{
struct bitmap_ip *map;
u32 first_ip = 0, last_ip = 0, hosts;

2
net/netfilter/ipset/ip_set_bitmap_ipmac.c
View file

@ -309,7 +309,7 @@ init_map_ipmac(struct ip_set *set, struct bitmap_ipmac *map,
}
static int
bitmap_ipmac_create(struct ip_set *set, struct nlattr *tb[],
bitmap_ipmac_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
u32 flags)
{
u32 first_ip = 0, last_ip = 0;

3
net/netfilter/ipset/ip_set_bitmap_port.c
View file

@ -228,7 +228,8 @@ 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 net *net, struct ip_set *set, struct nlattr *tb[],
u32 flags)
{
struct bitmap_port *map;
u16 first_port, last_port;

296
net/netfilter/ipset/ip_set_core.c
View file

@ -17,6 +17,8 @@
#include <linux/spinlock.h>
#include <linux/rculist.h>
#include <net/netlink.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
#include <linux/netfilter.h>
#include <linux/netfilter/x_tables.h>
@ -27,8 +29,17 @@ static LIST_HEAD(ip_set_type_list); /* all registered set types */
static DEFINE_MUTEX(ip_set_type_mutex); /* protects ip_set_type_list */
static DEFINE_RWLOCK(ip_set_ref_lock); /* protects the set refs */
static struct ip_set * __rcu *ip_set_list; /* all individual sets */
static ip_set_id_t ip_set_max = CONFIG_IP_SET_MAX; /* max number of sets */
struct ip_set_net {
struct ip_set * __rcu *ip_set_list; /* all individual sets */
ip_set_id_t ip_set_max; /* max number of sets */
int is_deleted; /* deleted by ip_set_net_exit */
};
static int ip_set_net_id __read_mostly;
static inline struct ip_set_net *ip_set_pernet(struct net *net)
{
return net_generic(net, ip_set_net_id);
}
#define IP_SET_INC 64
#define STREQ(a, b) (strncmp(a, b, IPSET_MAXNAMELEN) == 0)
@ -45,8 +56,8 @@ MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_IPSET);
/* When the nfnl mutex is held: */
#define nfnl_dereference(p) \
rcu_dereference_protected(p, 1)
#define nfnl_set(id) \
nfnl_dereference(ip_set_list)[id]
#define nfnl_set(inst, id) \
nfnl_dereference((inst)->ip_set_list)[id]
/*
* The set types are implemented in modules and registered set types
@ -434,13 +445,14 @@ __ip_set_put(struct ip_set *set)
*/
static inline struct ip_set *
ip_set_rcu_get(ip_set_id_t index)
ip_set_rcu_get(struct net *net, ip_set_id_t index)
{
struct ip_set *set;
struct ip_set_net *inst = ip_set_pernet(net);
rcu_read_lock();
/* ip_set_list itself needs to be protected */
set = rcu_dereference(ip_set_list)[index];
set = rcu_dereference(inst->ip_set_list)[index];
rcu_read_unlock();
return set;
@ -450,7 +462,8 @@ int
ip_set_test(ip_set_id_t index, const struct sk_buff *skb,
const struct xt_action_param *par, struct ip_set_adt_opt *opt)
{
struct ip_set *set = ip_set_rcu_get(index);
struct ip_set *set = ip_set_rcu_get(
dev_net(par->in ? par->in : par->out), index);
int ret = 0;
BUG_ON(set == NULL);
@ -488,7 +501,8 @@ int
ip_set_add(ip_set_id_t index, const struct sk_buff *skb,
const struct xt_action_param *par, struct ip_set_adt_opt *opt)
{
struct ip_set *set = ip_set_rcu_get(index);
struct ip_set *set = ip_set_rcu_get(
dev_net(par->in ? par->in : par->out), index);
int ret;
BUG_ON(set == NULL);
@ -510,7 +524,8 @@ int
ip_set_del(ip_set_id_t index, const struct sk_buff *skb,
const struct xt_action_param *par, struct ip_set_adt_opt *opt)
{
struct ip_set *set = ip_set_rcu_get(index);
struct ip_set *set = ip_set_rcu_get(
dev_net(par->in ? par->in : par->out), index);
int ret = 0;
BUG_ON(set == NULL);
@ -534,14 +549,15 @@ EXPORT_SYMBOL_GPL(ip_set_del);
*
*/
ip_set_id_t
ip_set_get_byname(const char *name, struct ip_set **set)
ip_set_get_byname(struct net *net, const char *name, struct ip_set **set)
{
ip_set_id_t i, index = IPSET_INVALID_ID;
struct ip_set *s;
struct ip_set_net *inst = ip_set_pernet(net);
rcu_read_lock();
for (i = 0; i < ip_set_max; i++) {
s = rcu_dereference(ip_set_list)[i];
for (i = 0; i < inst->ip_set_max; i++) {
s = rcu_dereference(inst->ip_set_list)[i];
if (s != NULL && STREQ(s->name, name)) {
__ip_set_get(s);
index = i;
@ -561,17 +577,26 @@ EXPORT_SYMBOL_GPL(ip_set_get_byname);
* to be valid, after calling this function.
*
*/
void
ip_set_put_byindex(ip_set_id_t index)
static inline void
__ip_set_put_byindex(struct ip_set_net *inst, ip_set_id_t index)
{
struct ip_set *set;
rcu_read_lock();
set = rcu_dereference(ip_set_list)[index];
set = rcu_dereference(inst->ip_set_list)[index];
if (set != NULL)
__ip_set_put(set);
rcu_read_unlock();
}
void
ip_set_put_byindex(struct net *net, ip_set_id_t index)
{
struct ip_set_net *inst = ip_set_pernet(net);
__ip_set_put_byindex(inst, index);
}
EXPORT_SYMBOL_GPL(ip_set_put_byindex);
/*
@ -582,9 +607,9 @@ EXPORT_SYMBOL_GPL(ip_set_put_byindex);
*
*/
const char *
ip_set_name_byindex(ip_set_id_t index)
ip_set_name_byindex(struct net *net, ip_set_id_t index)
{
const struct ip_set *set = ip_set_rcu_get(index);
const struct ip_set *set = ip_set_rcu_get(net, index);
BUG_ON(set == NULL);
BUG_ON(set->ref == 0);
@ -606,14 +631,15 @@ EXPORT_SYMBOL_GPL(ip_set_name_byindex);
* The nfnl mutex is used in the function.
*/
ip_set_id_t
ip_set_nfnl_get(const char *name)
ip_set_nfnl_get(struct net *net, const char *name)
{
ip_set_id_t i, index = IPSET_INVALID_ID;
struct ip_set *s;
struct ip_set_net *inst = ip_set_pernet(net);
nfnl_lock(NFNL_SUBSYS_IPSET);
for (i = 0; i < ip_set_max; i++) {
s = nfnl_set(i);
for (i = 0; i < inst->ip_set_max; i++) {
s = nfnl_set(inst, i);
if (s != NULL && STREQ(s->name, name)) {
__ip_set_get(s);
index = i;
@ -633,15 +659,16 @@ EXPORT_SYMBOL_GPL(ip_set_nfnl_get);
* The nfnl mutex is used in the function.
*/
ip_set_id_t
ip_set_nfnl_get_byindex(ip_set_id_t index)
ip_set_nfnl_get_byindex(struct net *net, ip_set_id_t index)
{
struct ip_set *set;
struct ip_set_net *inst = ip_set_pernet(net);
if (index > ip_set_max)
if (index > inst->ip_set_max)
return IPSET_INVALID_ID;
nfnl_lock(NFNL_SUBSYS_IPSET);
set = nfnl_set(index);
set = nfnl_set(inst, index);
if (set)
__ip_set_get(set);
else
@ -660,13 +687,17 @@ EXPORT_SYMBOL_GPL(ip_set_nfnl_get_byindex);
* The nfnl mutex is used in the function.
*/
void
ip_set_nfnl_put(ip_set_id_t index)
ip_set_nfnl_put(struct net *net, ip_set_id_t index)
{
struct ip_set *set;
struct ip_set_net *inst = ip_set_pernet(net);
nfnl_lock(NFNL_SUBSYS_IPSET);
set = nfnl_set(index);
if (set != NULL)
__ip_set_put(set);
if (!inst->is_deleted) { /* already deleted from ip_set_net_exit() */
set = nfnl_set(inst, index);
if (set != NULL)
__ip_set_put(set);
}
nfnl_unlock(NFNL_SUBSYS_IPSET);
}
EXPORT_SYMBOL_GPL(ip_set_nfnl_put);
@ -724,14 +755,14 @@ static const struct nla_policy ip_set_create_policy[IPSET_ATTR_CMD_MAX + 1] = {
};
static struct ip_set *
find_set_and_id(const char *name, ip_set_id_t *id)
find_set_and_id(struct ip_set_net *inst, const char *name, ip_set_id_t *id)
{
struct ip_set *set = NULL;
ip_set_id_t i;
*id = IPSET_INVALID_ID;
for (i = 0; i < ip_set_max; i++) {
set = nfnl_set(i);
for (i = 0; i < inst->ip_set_max; i++) {
set = nfnl_set(inst, i);
if (set != NULL && STREQ(set->name, name)) {
*id = i;
break;
@ -741,22 +772,23 @@ find_set_and_id(const char *name, ip_set_id_t *id)
}
static inline struct ip_set *
find_set(const char *name)
find_set(struct ip_set_net *inst, const char *name)
{
ip_set_id_t id;
return find_set_and_id(name, &id);
return find_set_and_id(inst, name, &id);
}
static int
find_free_id(const char *name, ip_set_id_t *index, struct ip_set **set)
find_free_id(struct ip_set_net *inst, const char *name, ip_set_id_t *index,
struct ip_set **set)
{
struct ip_set *s;
ip_set_id_t i;
*index = IPSET_INVALID_ID;
for (i = 0; i < ip_set_max; i++) {
s = nfnl_set(i);
for (i = 0; i < inst->ip_set_max; i++) {
s = nfnl_set(inst, i);
if (s == NULL) {
if (*index == IPSET_INVALID_ID)
*index = i;
@ -785,6 +817,8 @@ ip_set_create(struct sock *ctnl, struct sk_buff *skb,
const struct nlmsghdr *nlh,
const struct nlattr * const attr[])
{
struct net *net = sock_net(ctnl);
struct ip_set_net *inst = ip_set_pernet(net);
struct ip_set *set, *clash = NULL;
ip_set_id_t index = IPSET_INVALID_ID;
struct nlattr *tb[IPSET_ATTR_CREATE_MAX+1] = {};
@ -843,7 +877,7 @@ ip_set_create(struct sock *ctnl, struct sk_buff *skb,
goto put_out;
}
ret = set->type->create(set, tb, flags);
ret = set->type->create(net, set, tb, flags);
if (ret != 0)
goto put_out;
@ -854,7 +888,7 @@ ip_set_create(struct sock *ctnl, struct sk_buff *skb,
* by the nfnl mutex. Find the first free index in ip_set_list
* and check clashing.
*/
ret = find_free_id(set->name, &index, &clash);
ret = find_free_id(inst, set->name, &index, &clash);
if (ret == -EEXIST) {
/* If this is the same set and requested, ignore error */
if ((flags & IPSET_FLAG_EXIST) &&
@ -867,9 +901,9 @@ ip_set_create(struct sock *ctnl, struct sk_buff *skb,
goto cleanup;
} else if (ret == -IPSET_ERR_MAX_SETS) {
struct ip_set **list, **tmp;
ip_set_id_t i = ip_set_max + IP_SET_INC;
ip_set_id_t i = inst->ip_set_max + IP_SET_INC;
if (i < ip_set_max || i == IPSET_INVALID_ID)
if (i < inst->ip_set_max || i == IPSET_INVALID_ID)
/* Wraparound */
goto cleanup;
@ -877,14 +911,14 @@ ip_set_create(struct sock *ctnl, struct sk_buff *skb,
if (!list)
goto cleanup;
/* nfnl mutex is held, both lists are valid */
tmp = nfnl_dereference(ip_set_list);
memcpy(list, tmp, sizeof(struct ip_set *) * ip_set_max);
rcu_assign_pointer(ip_set_list, list);
tmp = nfnl_dereference(inst->ip_set_list);
memcpy(list, tmp, sizeof(struct ip_set *) * inst->ip_set_max);
rcu_assign_pointer(inst->ip_set_list, list);
/* Make sure all current packets have passed through */
synchronize_net();
/* Use new list */
index = ip_set_max;
ip_set_max = i;
index = inst->ip_set_max;
inst->ip_set_max = i;
kfree(tmp);
ret = 0;
} else if (ret)
@ -894,7 +928,7 @@ ip_set_create(struct sock *ctnl, struct sk_buff *skb,
* Finally! Add our shiny new set to the list, and be done.
*/
pr_debug("create: '%s' created with index %u!\n", set->name, index);
nfnl_set(index) = set;
nfnl_set(inst, index) = set;
return ret;
@ -917,12 +951,12 @@ ip_set_setname_policy[IPSET_ATTR_CMD_MAX + 1] = {
};
static void
ip_set_destroy_set(ip_set_id_t index)
ip_set_destroy_set(struct ip_set_net *inst, ip_set_id_t index)
{
struct ip_set *set = nfnl_set(index);
struct ip_set *set = nfnl_set(inst, index);
pr_debug("set: %s\n", set->name);
nfnl_set(index) = NULL;
nfnl_set(inst, index) = NULL;
/* Must call it without holding any lock */
set->variant->destroy(set);
@ -935,6 +969,7 @@ ip_set_destroy(struct sock *ctnl, struct sk_buff *skb,
const struct nlmsghdr *nlh,
const struct nlattr * const attr[])
{
struct ip_set_net *inst = ip_set_pernet(sock_net(ctnl));
struct ip_set *s;
ip_set_id_t i;
int ret = 0;
@ -954,21 +989,22 @@ ip_set_destroy(struct sock *ctnl, struct sk_buff *skb,
*/
read_lock_bh(&ip_set_ref_lock);
if (!attr[IPSET_ATTR_SETNAME]) {
for (i = 0; i < ip_set_max; i++) {
s = nfnl_set(i);
for (i = 0; i < inst->ip_set_max; i++) {
s = nfnl_set(inst, i);
if (s != NULL && s->ref) {
ret = -IPSET_ERR_BUSY;
goto out;
}
}
read_unlock_bh(&ip_set_ref_lock);
for (i = 0; i < ip_set_max; i++) {
s = nfnl_set(i);
for (i = 0; i < inst->ip_set_max; i++) {
s = nfnl_set(inst, i);
if (s != NULL)
ip_set_destroy_set(i);
ip_set_destroy_set(inst, i);
}
} else {
s = find_set_and_id(nla_data(attr[IPSET_ATTR_SETNAME]), &i);
s = find_set_and_id(inst, nla_data(attr[IPSET_ATTR_SETNAME]),
&i);
if (s == NULL) {
ret = -ENOENT;
goto out;
@ -978,7 +1014,7 @@ ip_set_destroy(struct sock *ctnl, struct sk_buff *skb,
}
read_unlock_bh(&ip_set_ref_lock);
ip_set_destroy_set(i);
ip_set_destroy_set(inst, i);
}
return 0;
out:
@ -1003,6 +1039,7 @@ ip_set_flush(struct sock *ctnl, struct sk_buff *skb,
const struct nlmsghdr *nlh,
const struct nlattr * const attr[])
{
struct ip_set_net *inst = ip_set_pernet(sock_net(ctnl));
struct ip_set *s;
ip_set_id_t i;
@ -1010,13 +1047,13 @@ ip_set_flush(struct sock *ctnl, struct sk_buff *skb,
return -IPSET_ERR_PROTOCOL;
if (!attr[IPSET_ATTR_SETNAME]) {
for (i = 0; i < ip_set_max; i++) {
s = nfnl_set(i);
for (i = 0; i < inst->ip_set_max; i++) {
s = nfnl_set(inst, i);
if (s != NULL)
ip_set_flush_set(s);
}
} else {
s = find_set(nla_data(attr[IPSET_ATTR_SETNAME]));
s = find_set(inst, nla_data(attr[IPSET_ATTR_SETNAME]));
if (s == NULL)
return -ENOENT;
@ -1042,6 +1079,7 @@ ip_set_rename(struct sock *ctnl, struct sk_buff *skb,
const struct nlmsghdr *nlh,
const struct nlattr * const attr[])
{
struct ip_set_net *inst = ip_set_pernet(sock_net(ctnl));
struct ip_set *set, *s;
const char *name2;
ip_set_id_t i;
@ -1052,7 +1090,7 @@ ip_set_rename(struct sock *ctnl, struct sk_buff *skb,
attr[IPSET_ATTR_SETNAME2] == NULL))
return -IPSET_ERR_PROTOCOL;
set = find_set(nla_data(attr[IPSET_ATTR_SETNAME]));
set = find_set(inst, nla_data(attr[IPSET_ATTR_SETNAME]));
if (set == NULL)
return -ENOENT;
@ -1063,8 +1101,8 @@ ip_set_rename(struct sock *ctnl, struct sk_buff *skb,
}
name2 = nla_data(attr[IPSET_ATTR_SETNAME2]);
for (i = 0; i < ip_set_max; i++) {
s = nfnl_set(i);
for (i = 0; i < inst->ip_set_max; i++) {
s = nfnl_set(inst, i);
if (s != NULL && STREQ(s->name, name2)) {
ret = -IPSET_ERR_EXIST_SETNAME2;
goto out;
@ -1091,6 +1129,7 @@ ip_set_swap(struct sock *ctnl, struct sk_buff *skb,
const struct nlmsghdr *nlh,
const struct nlattr * const attr[])
{
struct ip_set_net *inst = ip_set_pernet(sock_net(ctnl));
struct ip_set *from, *to;
ip_set_id_t from_id, to_id;
char from_name[IPSET_MAXNAMELEN];
@ -1100,11 +1139,13 @@ ip_set_swap(struct sock *ctnl, struct sk_buff *skb,
attr[IPSET_ATTR_SETNAME2] == NULL))
return -IPSET_ERR_PROTOCOL;
from = find_set_and_id(nla_data(attr[IPSET_ATTR_SETNAME]), &from_id);
from = find_set_and_id(inst, nla_data(attr[IPSET_ATTR_SETNAME]),
&from_id);
if (from == NULL)
return -ENOENT;
to = find_set_and_id(nla_data(attr[IPSET_ATTR_SETNAME2]), &to_id);
to = find_set_and_id(inst, nla_data(attr[IPSET_ATTR_SETNAME2]),
&to_id);
if (to == NULL)
return -IPSET_ERR_EXIST_SETNAME2;
@ -1121,8 +1162,8 @@ ip_set_swap(struct sock *ctnl, struct sk_buff *skb,
write_lock_bh(&ip_set_ref_lock);
swap(from->ref, to->ref);
nfnl_set(from_id) = to;
nfnl_set(to_id) = from;
nfnl_set(inst, from_id) = to;
nfnl_set(inst, to_id) = from;
write_unlock_bh(&ip_set_ref_lock);
return 0;
@ -1141,9 +1182,10 @@ ip_set_swap(struct sock *ctnl, struct sk_buff *skb,
static int
ip_set_dump_done(struct netlink_callback *cb)
{
struct ip_set_net *inst = (struct ip_set_net *)cb->data;
if (cb->args[2]) {
pr_debug("release set %s\n", nfnl_set(cb->args[1])->name);
ip_set_put_byindex((ip_set_id_t) cb->args[1]);
pr_debug("release set %s\n", nfnl_set(inst, cb->args[1])->name);
__ip_set_put_byindex(inst, (ip_set_id_t) cb->args[1]);
}
return 0;
}
@ -1169,6 +1211,7 @@ dump_init(struct netlink_callback *cb)
struct nlattr *attr = (void *)nlh + min_len;
u32 dump_type;
ip_set_id_t index;
struct ip_set_net *inst = (struct ip_set_net *)cb->data;
/* Second pass, so parser can't fail */
nla_parse(cda, IPSET_ATTR_CMD_MAX,
@ -1182,7 +1225,7 @@ dump_init(struct netlink_callback *cb)
if (cda[IPSET_ATTR_SETNAME]) {
struct ip_set *set;
set = find_set_and_id(nla_data(cda[IPSET_ATTR_SETNAME]),
set = find_set_and_id(inst, nla_data(cda[IPSET_ATTR_SETNAME]),
&index);
if (set == NULL)
return -ENOENT;
@ -1210,6 +1253,7 @@ ip_set_dump_start(struct sk_buff *skb, struct netlink_callback *cb)
unsigned int flags = NETLINK_CB(cb->skb).portid ? NLM_F_MULTI : 0;
u32 dump_type, dump_flags;
int ret = 0;
struct ip_set_net *inst = (struct ip_set_net *)cb->data;
if (!cb->args[0]) {
ret = dump_init(cb);
@ -1223,18 +1267,18 @@ ip_set_dump_start(struct sk_buff *skb, struct netlink_callback *cb)
}
}
if (cb->args[1] >= ip_set_max)
if (cb->args[1] >= inst->ip_set_max)
goto out;
dump_type = DUMP_TYPE(cb->args[0]);
dump_flags = DUMP_FLAGS(cb->args[0]);
max = dump_type == DUMP_ONE ? cb->args[1] + 1 : ip_set_max;
max = dump_type == DUMP_ONE ? cb->args[1] + 1 : inst->ip_set_max;
dump_last:
pr_debug("args[0]: %u %u args[1]: %ld\n",
dump_type, dump_flags, cb->args[1]);
for (; cb->args[1] < max; cb->args[1]++) {
index = (ip_set_id_t) cb->args[1];
set = nfnl_set(index);
set = nfnl_set(inst, index);
if (set == NULL) {
if (dump_type == DUMP_ONE) {
ret = -ENOENT;
@ -1312,8 +1356,8 @@ next_set:
release_refcount:
/* If there was an error or set is done, release set */
if (ret || !cb->args[2]) {
pr_debug("release set %s\n", nfnl_set(index)->name);
ip_set_put_byindex(index);
pr_debug("release set %s\n", nfnl_set(inst, index)->name);
__ip_set_put_byindex(inst, index);
cb->args[2] = 0;
}
out:
@ -1331,6 +1375,8 @@ ip_set_dump(struct sock *ctnl, struct sk_buff *skb,
const struct nlmsghdr *nlh,
const struct nlattr * const attr[])
{
struct ip_set_net *inst = ip_set_pernet(sock_net(ctnl));
if (unlikely(protocol_failed(attr)))
return -IPSET_ERR_PROTOCOL;
@ -1338,6 +1384,7 @@ ip_set_dump(struct sock *ctnl, struct sk_buff *skb,
struct netlink_dump_control c = {
.dump = ip_set_dump_start,
.done = ip_set_dump_done,
.data = (void *)inst
};
return netlink_dump_start(ctnl, skb, nlh, &c);
}
@ -1416,6 +1463,7 @@ ip_set_uadd(struct sock *ctnl, struct sk_buff *skb,
const struct nlmsghdr *nlh,
const struct nlattr * const attr[])
{
struct ip_set_net *inst = ip_set_pernet(sock_net(ctnl));
struct ip_set *set;
struct nlattr *tb[IPSET_ATTR_ADT_MAX+1] = {};
const struct nlattr *nla;
@ -1434,7 +1482,7 @@ ip_set_uadd(struct sock *ctnl, struct sk_buff *skb,
attr[IPSET_ATTR_LINENO] == NULL))))
return -IPSET_ERR_PROTOCOL;
set = find_set(nla_data(attr[IPSET_ATTR_SETNAME]));
set = find_set(inst, nla_data(attr[IPSET_ATTR_SETNAME]));
if (set == NULL)
return -ENOENT;
@ -1470,6 +1518,7 @@ ip_set_udel(struct sock *ctnl, struct sk_buff *skb,
const struct nlmsghdr *nlh,
const struct nlattr * const attr[])
{
struct ip_set_net *inst = ip_set_pernet(sock_net(ctnl));
struct ip_set *set;
struct nlattr *tb[IPSET_ATTR_ADT_MAX+1] = {};
const struct nlattr *nla;
@ -1488,7 +1537,7 @@ ip_set_udel(struct sock *ctnl, struct sk_buff *skb,
attr[IPSET_ATTR_LINENO] == NULL))))
return -IPSET_ERR_PROTOCOL;
set = find_set(nla_data(attr[IPSET_ATTR_SETNAME]));
set = find_set(inst, nla_data(attr[IPSET_ATTR_SETNAME]));
if (set == NULL)
return -ENOENT;
@ -1524,6 +1573,7 @@ ip_set_utest(struct sock *ctnl, struct sk_buff *skb,
const struct nlmsghdr *nlh,
const struct nlattr * const attr[])
{
struct ip_set_net *inst = ip_set_pernet(sock_net(ctnl));
struct ip_set *set;
struct nlattr *tb[IPSET_ATTR_ADT_MAX+1] = {};
int ret = 0;
@ -1534,7 +1584,7 @@ ip_set_utest(struct sock *ctnl, struct sk_buff *skb,
!flag_nested(attr[IPSET_ATTR_DATA])))
return -IPSET_ERR_PROTOCOL;
set = find_set(nla_data(attr[IPSET_ATTR_SETNAME]));
set = find_set(inst, nla_data(attr[IPSET_ATTR_SETNAME]));
if (set == NULL)
return -ENOENT;
@ -1559,6 +1609,7 @@ ip_set_header(struct sock *ctnl, struct sk_buff *skb,
const struct nlmsghdr *nlh,
const struct nlattr * const attr[])
{
struct ip_set_net *inst = ip_set_pernet(sock_net(ctnl));
const struct ip_set *set;
struct sk_buff *skb2;
struct nlmsghdr *nlh2;
@ -1568,7 +1619,7 @@ ip_set_header(struct sock *ctnl, struct sk_buff *skb,
attr[IPSET_ATTR_SETNAME] == NULL))
return -IPSET_ERR_PROTOCOL;
set = find_set(nla_data(attr[IPSET_ATTR_SETNAME]));
set = find_set(inst, nla_data(attr[IPSET_ATTR_SETNAME]));
if (set == NULL)
return -ENOENT;
@ -1793,8 +1844,10 @@ ip_set_sockfn_get(struct sock *sk, int optval, void __user *user, int *len)
unsigned int *op;
void *data;
int copylen = *len, ret = 0;
struct net *net = sock_net(sk);
struct ip_set_net *inst = ip_set_pernet(net);
if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN))
if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
return -EPERM;
if (optval != SO_IP_SET)
return -EBADF;
@ -1843,7 +1896,7 @@ ip_set_sockfn_get(struct sock *sk, int optval, void __user *user, int *len)
}
req_get->set.name[IPSET_MAXNAMELEN - 1] = '\0';
nfnl_lock(NFNL_SUBSYS_IPSET);
find_set_and_id(req_get->set.name, &id);
find_set_and_id(inst, req_get->set.name, &id);
req_get->set.index = id;
nfnl_unlock(NFNL_SUBSYS_IPSET);
goto copy;
@ -1858,10 +1911,10 @@ ip_set_sockfn_get(struct sock *sk, int optval, void __user *user, int *len)
}
req_get->set.name[IPSET_MAXNAMELEN - 1] = '\0';
nfnl_lock(NFNL_SUBSYS_IPSET);
find_set_and_id(req_get->set.name, &id);
find_set_and_id(inst, req_get->set.name, &id);
req_get->set.index = id;
if (id != IPSET_INVALID_ID)
req_get->family = nfnl_set(id)->family;
req_get->family = nfnl_set(inst, id)->family;
nfnl_unlock(NFNL_SUBSYS_IPSET);
goto copy;
}
@ -1870,12 +1923,12 @@ ip_set_sockfn_get(struct sock *sk, int optval, void __user *user, int *len)
struct ip_set *set;
if (*len != sizeof(struct ip_set_req_get_set) ||
req_get->set.index >= ip_set_max) {
req_get->set.index >= inst->ip_set_max) {
ret = -EINVAL;
goto done;
}
nfnl_lock(NFNL_SUBSYS_IPSET);
set = nfnl_set(req_get->set.index);
set = nfnl_set(inst, req_get->set.index);
strncpy(req_get->set.name, set ? set->name : "",
IPSET_MAXNAMELEN);
nfnl_unlock(NFNL_SUBSYS_IPSET);
@ -1904,49 +1957,82 @@ static struct nf_sockopt_ops so_set __read_mostly = {
.owner = THIS_MODULE,
};
static int __net_init
ip_set_net_init(struct net *net)
{
struct ip_set_net *inst = ip_set_pernet(net);
struct ip_set **list;
inst->ip_set_max = max_sets ? max_sets : CONFIG_IP_SET_MAX;
if (inst->ip_set_max >= IPSET_INVALID_ID)
inst->ip_set_max = IPSET_INVALID_ID - 1;
list = kzalloc(sizeof(struct ip_set *) * inst->ip_set_max, GFP_KERNEL);
if (!list)
return -ENOMEM;
inst->is_deleted = 0;
rcu_assign_pointer(inst->ip_set_list, list);
pr_notice("ip_set: protocol %u\n", IPSET_PROTOCOL);
return 0;
}
static void __net_exit
ip_set_net_exit(struct net *net)
{
struct ip_set_net *inst = ip_set_pernet(net);
struct ip_set *set = NULL;
ip_set_id_t i;
inst->is_deleted = 1; /* flag for ip_set_nfnl_put */
for (i = 0; i < inst->ip_set_max; i++) {
set = nfnl_set(inst, i);
if (set != NULL)
ip_set_destroy_set(inst, i);
}
kfree(rcu_dereference_protected(inst->ip_set_list, 1));
}
static struct pernet_operations ip_set_net_ops = {
.init = ip_set_net_init,
.exit = ip_set_net_exit,
.id = &ip_set_net_id,
.size = sizeof(struct ip_set_net)
};
static int __init
ip_set_init(void)
{
struct ip_set **list;
int ret;
if (max_sets)
ip_set_max = max_sets;
if (ip_set_max >= IPSET_INVALID_ID)
ip_set_max = IPSET_INVALID_ID - 1;
list = kzalloc(sizeof(struct ip_set *) * ip_set_max, GFP_KERNEL);
if (!list)
return -ENOMEM;
rcu_assign_pointer(ip_set_list, list);
ret = nfnetlink_subsys_register(&ip_set_netlink_subsys);
int ret = nfnetlink_subsys_register(&ip_set_netlink_subsys);
if (ret != 0) {
pr_err("ip_set: cannot register with nfnetlink.\n");
kfree(list);
return ret;
}
ret = nf_register_sockopt(&so_set);
if (ret != 0) {
pr_err("SO_SET registry failed: %d\n", ret);
nfnetlink_subsys_unregister(&ip_set_netlink_subsys);
kfree(list);
return ret;
}
pr_notice("ip_set: protocol %u\n", IPSET_PROTOCOL);
ret = register_pernet_subsys(&ip_set_net_ops);
if (ret) {
pr_err("ip_set: cannot register pernet_subsys.\n");
nf_unregister_sockopt(&so_set);
nfnetlink_subsys_unregister(&ip_set_netlink_subsys);
return ret;
}
return 0;
}
static void __exit
ip_set_fini(void)
{
struct ip_set **list = rcu_dereference_protected(ip_set_list, 1);
/* There can't be any existing set */
unregister_pernet_subsys(&ip_set_net_ops);
nf_unregister_sockopt(&so_set);
nfnetlink_subsys_unregister(&ip_set_netlink_subsys);
kfree(list);
pr_debug("these are the famous last words\n");
}

3
net/netfilter/ipset/ip_set_hash_gen.h
View file

@ -1011,7 +1011,8 @@ static const struct ip_set_type_variant mtype_variant = {
#ifdef IP_SET_EMIT_CREATE
static int
IPSET_TOKEN(HTYPE, _create)(struct ip_set *set, struct nlattr *tb[], u32 flags)
IPSET_TOKEN(HTYPE, _create)(struct net *net, struct ip_set *set,
struct nlattr *tb[], u32 flags)
{
u32 hashsize = IPSET_DEFAULT_HASHSIZE, maxelem = IPSET_DEFAULT_MAXELEM;
u8 hbits;

31
net/netfilter/ipset/ip_set_list_set.c
View file

@ -39,6 +39,7 @@ struct set_adt_elem {
struct list_set {
u32 size; /* size of set list array */
struct timer_list gc; /* garbage collection */
struct net *net; /* namespace */
struct set_elem members[0]; /* the set members */
};
@ -171,7 +172,7 @@ list_set_add(struct ip_set *set, u32 i, struct set_adt_elem *d,
if (e->id != IPSET_INVALID_ID) {
if (i == map->size - 1) {
/* Last element replaced: e.g. add new,before,last */
ip_set_put_byindex(e->id);
ip_set_put_byindex(map->net, e->id);
ip_set_ext_destroy(set, e);
} else {
struct set_elem *x = list_set_elem(set, map,
@ -179,7 +180,7 @@ list_set_add(struct ip_set *set, u32 i, struct set_adt_elem *d,
/* Last element pushed off */
if (x->id != IPSET_INVALID_ID) {
ip_set_put_byindex(x->id);
ip_set_put_byindex(map->net, x->id);
ip_set_ext_destroy(set, x);
}
memmove(list_set_elem(set, map, i + 1), e,
@ -205,7 +206,7 @@ list_set_del(struct ip_set *set, u32 i)
struct list_set *map = set->data;
struct set_elem *e = list_set_elem(set, map, i);
ip_set_put_byindex(e->id);
ip_set_put_byindex(map->net, e->id);
ip_set_ext_destroy(set, e);
if (i < map->size - 1)
@ -307,7 +308,7 @@ list_set_uadd(struct ip_set *set, void *value, const struct ip_set_ext *ext,
if (SET_WITH_COMMENT(set))
ip_set_init_comment(ext_comment(e, set), ext);
/* Set is already added to the list */
ip_set_put_byindex(d->id);
ip_set_put_byindex(map->net, d->id);
return 0;
}
insert:
@ -366,6 +367,7 @@ 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;
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(set);
@ -385,7 +387,7 @@ list_set_uadt(struct ip_set *set, struct nlattr *tb[],
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);
e.id = ip_set_get_byname(map->net, nla_data(tb[IPSET_ATTR_NAME]), &s);
if (e.id == IPSET_INVALID_ID)
return -IPSET_ERR_NAME;
/* "Loop detection" */
@ -405,7 +407,8 @@ list_set_uadt(struct ip_set *set, struct nlattr *tb[],
}
if (tb[IPSET_ATTR_NAMEREF]) {
e.refid = ip_set_get_byname(nla_data(tb[IPSET_ATTR_NAMEREF]),
e.refid = ip_set_get_byname(map->net,
nla_data(tb[IPSET_ATTR_NAMEREF]),
&s);
if (e.refid == IPSET_INVALID_ID) {
ret = -IPSET_ERR_NAMEREF;
@ -421,9 +424,9 @@ list_set_uadt(struct ip_set *set, struct nlattr *tb[],
finish:
if (e.refid != IPSET_INVALID_ID)
ip_set_put_byindex(e.refid);
ip_set_put_byindex(map->net, e.refid);
if (adt != IPSET_ADD || ret)
ip_set_put_byindex(e.id);
ip_set_put_byindex(map->net, e.id);
return ip_set_eexist(ret, flags) ? 0 : ret;
}
@ -438,7 +441,7 @@ list_set_flush(struct ip_set *set)
for (i = 0; i < map->size; i++) {
e = list_set_elem(set, map, i);
if (e->id != IPSET_INVALID_ID) {
ip_set_put_byindex(e->id);
ip_set_put_byindex(map->net, e->id);
ip_set_ext_destroy(set, e);
e->id = IPSET_INVALID_ID;
}
@ -510,7 +513,7 @@ list_set_list(const struct ip_set *set,
goto nla_put_failure;
}
if (nla_put_string(skb, IPSET_ATTR_NAME,
ip_set_name_byindex(e->id)))
ip_set_name_byindex(map->net, e->id)))
goto nla_put_failure;
if (ip_set_put_extensions(skb, set, e, true))
goto nla_put_failure;
@ -587,7 +590,7 @@ list_set_gc_init(struct ip_set *set, void (*gc)(unsigned long ul_set))
/* Create list:set type of sets */
static bool
init_list_set(struct ip_set *set, u32 size)
init_list_set(struct net *net, struct ip_set *set, u32 size)
{
struct list_set *map;
struct set_elem *e;
@ -598,6 +601,7 @@ init_list_set(struct ip_set *set, u32 size)
return false;
map->size = size;
map->net = net;
set->data = map;
for (i = 0; i < size; i++) {
@ -609,7 +613,8 @@ init_list_set(struct ip_set *set, u32 size)
}
static int
list_set_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
list_set_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
u32 flags)
{
u32 size = IP_SET_LIST_DEFAULT_SIZE;
@ -625,7 +630,7 @@ list_set_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
set->variant = &set_variant;
set->dsize = ip_set_elem_len(set, tb, sizeof(struct set_elem));
if (!init_list_set(set, size))
if (!init_list_set(net, set, size))
return -ENOMEM;
if (tb[IPSET_ATTR_TIMEOUT]) {
set->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);

40
net/netfilter/xt_set.c
View file

@ -81,7 +81,7 @@ set_match_v0_checkentry(const struct xt_mtchk_param *par)
struct xt_set_info_match_v0 *info = par->matchinfo;
ip_set_id_t index;
index = ip_set_nfnl_get_byindex(info->match_set.index);
index = ip_set_nfnl_get_byindex(par->net, info->match_set.index);
if (index == IPSET_INVALID_ID) {
pr_warning("Cannot find set indentified by id %u to match\n",
@ -91,7 +91,7 @@ set_match_v0_checkentry(const struct xt_mtchk_param *par)
if (info->match_set.u.flags[IPSET_DIM_MAX-1] != 0) {
pr_warning("Protocol error: set match dimension "
"is over the limit!\n");
ip_set_nfnl_put(info->match_set.index);
ip_set_nfnl_put(par->net, info->match_set.index);
return -ERANGE;
}
@ -106,7 +106,7 @@ set_match_v0_destroy(const struct xt_mtdtor_param *par)
{
struct xt_set_info_match_v0 *info = par->matchinfo;
ip_set_nfnl_put(info->match_set.index);
ip_set_nfnl_put(par->net, info->match_set.index);
}
/* Revision 1 match */
@ -131,7 +131,7 @@ set_match_v1_checkentry(const struct xt_mtchk_param *par)
struct xt_set_info_match_v1 *info = par->matchinfo;
ip_set_id_t index;
index = ip_set_nfnl_get_byindex(info->match_set.index);
index = ip_set_nfnl_get_byindex(par->net, info->match_set.index);
if (index == IPSET_INVALID_ID) {
pr_warning("Cannot find set indentified by id %u to match\n",
@ -141,7 +141,7 @@ set_match_v1_checkentry(const struct xt_mtchk_param *par)
if (info->match_set.dim > IPSET_DIM_MAX) {
pr_warning("Protocol error: set match dimension "
"is over the limit!\n");
ip_set_nfnl_put(info->match_set.index);
ip_set_nfnl_put(par->net, info->match_set.index);
return -ERANGE;
}
@ -153,7 +153,7 @@ set_match_v1_destroy(const struct xt_mtdtor_param *par)
{
struct xt_set_info_match_v1 *info = par->matchinfo;
ip_set_nfnl_put(info->match_set.index);
ip_set_nfnl_put(par->net, info->match_set.index);
}
/* Revision 3 match */
@ -228,7 +228,7 @@ set_target_v0_checkentry(const struct xt_tgchk_param *par)
ip_set_id_t index;
if (info->add_set.index != IPSET_INVALID_ID) {
index = ip_set_nfnl_get_byindex(info->add_set.index);
index = ip_set_nfnl_get_byindex(par->net, info->add_set.index);
if (index == IPSET_INVALID_ID) {
pr_warning("Cannot find add_set index %u as target\n",
info->add_set.index);
@ -237,12 +237,12 @@ set_target_v0_checkentry(const struct xt_tgchk_param *par)
}
if (info->del_set.index != IPSET_INVALID_ID) {
index = ip_set_nfnl_get_byindex(info->del_set.index);
index = ip_set_nfnl_get_byindex(par->net, info->del_set.index);
if (index == IPSET_INVALID_ID) {
pr_warning("Cannot find del_set index %u as target\n",
info->del_set.index);
if (info->add_set.index != IPSET_INVALID_ID)
ip_set_nfnl_put(info->add_set.index);
ip_set_nfnl_put(par->net, info->add_set.index);
return -ENOENT;
}
}
@ -251,9 +251,9 @@ set_target_v0_checkentry(const struct xt_tgchk_param *par)
pr_warning("Protocol error: SET target dimension "
"is over the limit!\n");
if (info->add_set.index != IPSET_INVALID_ID)
ip_set_nfnl_put(info->add_set.index);
ip_set_nfnl_put(par->net, info->add_set.index);
if (info->del_set.index != IPSET_INVALID_ID)
ip_set_nfnl_put(info->del_set.index);
ip_set_nfnl_put(par->net, info->del_set.index);
return -ERANGE;
}
@ -270,9 +270,9 @@ set_target_v0_destroy(const struct xt_tgdtor_param *par)
const struct xt_set_info_target_v0 *info = par->targinfo;
if (info->add_set.index != IPSET_INVALID_ID)
ip_set_nfnl_put(info->add_set.index);
ip_set_nfnl_put(par->net, info->add_set.index);
if (info->del_set.index != IPSET_INVALID_ID)
ip_set_nfnl_put(info->del_set.index);
ip_set_nfnl_put(par->net, info->del_set.index);
}
/* Revision 1 target */
@ -301,7 +301,7 @@ set_target_v1_checkentry(const struct xt_tgchk_param *par)
ip_set_id_t index;
if (info->add_set.index != IPSET_INVALID_ID) {
index = ip_set_nfnl_get_byindex(info->add_set.index);
index = ip_set_nfnl_get_byindex(par->net, info->add_set.index);
if (index == IPSET_INVALID_ID) {
pr_warning("Cannot find add_set index %u as target\n",
info->add_set.index);
@ -310,12 +310,12 @@ set_target_v1_checkentry(const struct xt_tgchk_param *par)
}
if (info->del_set.index != IPSET_INVALID_ID) {
index = ip_set_nfnl_get_byindex(info->del_set.index);
index = ip_set_nfnl_get_byindex(par->net, info->del_set.index);
if (index == IPSET_INVALID_ID) {
pr_warning("Cannot find del_set index %u as target\n",
info->del_set.index);
if (info->add_set.index != IPSET_INVALID_ID)
ip_set_nfnl_put(info->add_set.index);
ip_set_nfnl_put(par->net, info->add_set.index);
return -ENOENT;
}
}
@ -324,9 +324,9 @@ set_target_v1_checkentry(const struct xt_tgchk_param *par)
pr_warning("Protocol error: SET target dimension "
"is over the limit!\n");
if (info->add_set.index != IPSET_INVALID_ID)
ip_set_nfnl_put(info->add_set.index);
ip_set_nfnl_put(par->net, info->add_set.index);
if (info->del_set.index != IPSET_INVALID_ID)
ip_set_nfnl_put(info->del_set.index);
ip_set_nfnl_put(par->net, info->del_set.index);
return -ERANGE;
}
@ -339,9 +339,9 @@ set_target_v1_destroy(const struct xt_tgdtor_param *par)
const struct xt_set_info_target_v1 *info = par->targinfo;
if (info->add_set.index != IPSET_INVALID_ID)
ip_set_nfnl_put(info->add_set.index);
ip_set_nfnl_put(par->net, info->add_set.index);
if (info->del_set.index != IPSET_INVALID_ID)
ip_set_nfnl_put(info->del_set.index);
ip_set_nfnl_put(par->net, info->del_set.index);
}
/* Revision 2 target */

7
net/sched/em_ipset.c
View file

@ -24,11 +24,12 @@ static int em_ipset_change(struct tcf_proto *tp, void *data, int data_len,
{
struct xt_set_info *set = data;
ip_set_id_t index;
struct net *net = qdisc_dev(tp->q)->nd_net;
if (data_len != sizeof(*set))
return -EINVAL;
index = ip_set_nfnl_get_byindex(set->index);
index = ip_set_nfnl_get_byindex(net, set->index);
if (index == IPSET_INVALID_ID)
return -ENOENT;
@ -37,7 +38,7 @@ static int em_ipset_change(struct tcf_proto *tp, void *data, int data_len,
if (em->data)
return 0;
ip_set_nfnl_put(index);
ip_set_nfnl_put(net, index);
return -ENOMEM;
}
@ -45,7 +46,7 @@ static void em_ipset_destroy(struct tcf_proto *p, struct tcf_ematch *em)
{
const struct xt_set_info *set = (const void *) em->data;
if (set) {
ip_set_nfnl_put(set->index);
ip_set_nfnl_put(qdisc_dev(p->q)->nd_net, set->index);
kfree((void *) em->data);
}
}