@@ -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 */
@@ -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;
@@ -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;
@@ -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;
@@ -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 __init
-ip_set_init(void)
+static int __net_init
+ip_set_net_init(struct net *net)
{
+ struct ip_set_net *inst = ip_set_pernet(net);
+
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;
+ 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 *) * ip_set_max, GFP_KERNEL);
+ 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)
+};
+
- rcu_assign_pointer(ip_set_list, list);
- ret = nfnetlink_subsys_register(&ip_set_netlink_subsys);
+static int __init
+ip_set_init(void)
+{
+ 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");
}
@@ -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;
@@ -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]);
@@ -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 */
@@ -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);
}
}