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Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_netfilter.c2
-rw-r--r--net/bridge/netfilter/ebtable_broute.c26
-rw-r--r--net/bridge/netfilter/ebtable_filter.c41
-rw-r--r--net/bridge/netfilter/ebtable_nat.c38
-rw-r--r--net/bridge/netfilter/ebtables.c52
5 files changed, 118 insertions, 41 deletions
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index 274194b7824..a65e43a17fb 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -369,7 +369,7 @@ static int br_nf_pre_routing_finish(struct sk_buff *skb)
if (err != -EHOSTUNREACH || !in_dev || IN_DEV_FORWARD(in_dev))
goto free_skb;
- if (!ip_route_output_key(&init_net, &rt, &fl)) {
+ if (!ip_route_output_key(dev_net(dev), &rt, &fl)) {
/* - Bridged-and-DNAT'ed traffic doesn't
* require ip_forwarding. */
if (((struct dst_entry *)rt)->dev == dev) {
diff --git a/net/bridge/netfilter/ebtable_broute.c b/net/bridge/netfilter/ebtable_broute.c
index 246626bb0c8..8604dfc1fc3 100644
--- a/net/bridge/netfilter/ebtable_broute.c
+++ b/net/bridge/netfilter/ebtable_broute.c
@@ -56,29 +56,47 @@ static int ebt_broute(struct sk_buff *skb)
int ret;
ret = ebt_do_table(NF_BR_BROUTING, skb, skb->dev, NULL,
- &broute_table);
+ dev_net(skb->dev)->xt.broute_table);
if (ret == NF_DROP)
return 1; /* route it */
return 0; /* bridge it */
}
+static int __net_init broute_net_init(struct net *net)
+{
+ net->xt.broute_table = ebt_register_table(net, &broute_table);
+ if (IS_ERR(net->xt.broute_table))
+ return PTR_ERR(net->xt.broute_table);
+ return 0;
+}
+
+static void __net_exit broute_net_exit(struct net *net)
+{
+ ebt_unregister_table(net->xt.broute_table);
+}
+
+static struct pernet_operations broute_net_ops = {
+ .init = broute_net_init,
+ .exit = broute_net_exit,
+};
+
static int __init ebtable_broute_init(void)
{
int ret;
- ret = ebt_register_table(&broute_table);
+ ret = register_pernet_subsys(&broute_net_ops);
if (ret < 0)
return ret;
/* see br_input.c */
rcu_assign_pointer(br_should_route_hook, ebt_broute);
- return ret;
+ return 0;
}
static void __exit ebtable_broute_fini(void)
{
rcu_assign_pointer(br_should_route_hook, NULL);
synchronize_net();
- ebt_unregister_table(&broute_table);
+ unregister_pernet_subsys(&broute_net_ops);
}
module_init(ebtable_broute_init);
diff --git a/net/bridge/netfilter/ebtable_filter.c b/net/bridge/netfilter/ebtable_filter.c
index 1a58af51a2e..2b2e8040a9c 100644
--- a/net/bridge/netfilter/ebtable_filter.c
+++ b/net/bridge/netfilter/ebtable_filter.c
@@ -61,29 +61,36 @@ static struct ebt_table frame_filter =
};
static unsigned int
-ebt_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
+ebt_in_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
const struct net_device *out, int (*okfn)(struct sk_buff *))
{
- return ebt_do_table(hook, skb, in, out, &frame_filter);
+ return ebt_do_table(hook, skb, in, out, dev_net(in)->xt.frame_filter);
+}
+
+static unsigned int
+ebt_out_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
+ const struct net_device *out, int (*okfn)(struct sk_buff *))
+{
+ return ebt_do_table(hook, skb, in, out, dev_net(out)->xt.frame_filter);
}
static struct nf_hook_ops ebt_ops_filter[] __read_mostly = {
{
- .hook = ebt_hook,
+ .hook = ebt_in_hook,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_LOCAL_IN,
.priority = NF_BR_PRI_FILTER_BRIDGED,
},
{
- .hook = ebt_hook,
+ .hook = ebt_in_hook,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_FORWARD,
.priority = NF_BR_PRI_FILTER_BRIDGED,
},
{
- .hook = ebt_hook,
+ .hook = ebt_out_hook,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_LOCAL_OUT,
@@ -91,23 +98,41 @@ static struct nf_hook_ops ebt_ops_filter[] __read_mostly = {
},
};
+static int __net_init frame_filter_net_init(struct net *net)
+{
+ net->xt.frame_filter = ebt_register_table(net, &frame_filter);
+ if (IS_ERR(net->xt.frame_filter))
+ return PTR_ERR(net->xt.frame_filter);
+ return 0;
+}
+
+static void __net_exit frame_filter_net_exit(struct net *net)
+{
+ ebt_unregister_table(net->xt.frame_filter);
+}
+
+static struct pernet_operations frame_filter_net_ops = {
+ .init = frame_filter_net_init,
+ .exit = frame_filter_net_exit,
+};
+
static int __init ebtable_filter_init(void)
{
int ret;
- ret = ebt_register_table(&frame_filter);
+ ret = register_pernet_subsys(&frame_filter_net_ops);
if (ret < 0)
return ret;
ret = nf_register_hooks(ebt_ops_filter, ARRAY_SIZE(ebt_ops_filter));
if (ret < 0)
- ebt_unregister_table(&frame_filter);
+ unregister_pernet_subsys(&frame_filter_net_ops);
return ret;
}
static void __exit ebtable_filter_fini(void)
{
nf_unregister_hooks(ebt_ops_filter, ARRAY_SIZE(ebt_ops_filter));
- ebt_unregister_table(&frame_filter);
+ unregister_pernet_subsys(&frame_filter_net_ops);
}
module_init(ebtable_filter_init);
diff --git a/net/bridge/netfilter/ebtable_nat.c b/net/bridge/netfilter/ebtable_nat.c
index f60c1e78e57..3fe1ae87e35 100644
--- a/net/bridge/netfilter/ebtable_nat.c
+++ b/net/bridge/netfilter/ebtable_nat.c
@@ -61,36 +61,36 @@ static struct ebt_table frame_nat =
};
static unsigned int
-ebt_nat_dst(unsigned int hook, struct sk_buff *skb, const struct net_device *in
+ebt_nat_in(unsigned int hook, struct sk_buff *skb, const struct net_device *in
, const struct net_device *out, int (*okfn)(struct sk_buff *))
{
- return ebt_do_table(hook, skb, in, out, &frame_nat);
+ return ebt_do_table(hook, skb, in, out, dev_net(in)->xt.frame_nat);
}
static unsigned int
-ebt_nat_src(unsigned int hook, struct sk_buff *skb, const struct net_device *in
+ebt_nat_out(unsigned int hook, struct sk_buff *skb, const struct net_device *in
, const struct net_device *out, int (*okfn)(struct sk_buff *))
{
- return ebt_do_table(hook, skb, in, out, &frame_nat);
+ return ebt_do_table(hook, skb, in, out, dev_net(out)->xt.frame_nat);
}
static struct nf_hook_ops ebt_ops_nat[] __read_mostly = {
{
- .hook = ebt_nat_dst,
+ .hook = ebt_nat_out,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_LOCAL_OUT,
.priority = NF_BR_PRI_NAT_DST_OTHER,
},
{
- .hook = ebt_nat_src,
+ .hook = ebt_nat_out,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_POST_ROUTING,
.priority = NF_BR_PRI_NAT_SRC,
},
{
- .hook = ebt_nat_dst,
+ .hook = ebt_nat_in,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_PRE_ROUTING,
@@ -98,23 +98,41 @@ static struct nf_hook_ops ebt_ops_nat[] __read_mostly = {
},
};
+static int __net_init frame_nat_net_init(struct net *net)
+{
+ net->xt.frame_nat = ebt_register_table(net, &frame_nat);
+ if (IS_ERR(net->xt.frame_nat))
+ return PTR_ERR(net->xt.frame_nat);
+ return 0;
+}
+
+static void __net_exit frame_nat_net_exit(struct net *net)
+{
+ ebt_unregister_table(net->xt.frame_nat);
+}
+
+static struct pernet_operations frame_nat_net_ops = {
+ .init = frame_nat_net_init,
+ .exit = frame_nat_net_exit,
+};
+
static int __init ebtable_nat_init(void)
{
int ret;
- ret = ebt_register_table(&frame_nat);
+ ret = register_pernet_subsys(&frame_nat_net_ops);
if (ret < 0)
return ret;
ret = nf_register_hooks(ebt_ops_nat, ARRAY_SIZE(ebt_ops_nat));
if (ret < 0)
- ebt_unregister_table(&frame_nat);
+ unregister_pernet_subsys(&frame_nat_net_ops);
return ret;
}
static void __exit ebtable_nat_fini(void)
{
nf_unregister_hooks(ebt_ops_nat, ARRAY_SIZE(ebt_ops_nat));
- ebt_unregister_table(&frame_nat);
+ unregister_pernet_subsys(&frame_nat_net_ops);
}
module_init(ebtable_nat_init);
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 0fa208e8640..fa108c46e85 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -55,7 +55,6 @@
static DEFINE_MUTEX(ebt_mutex);
-static LIST_HEAD(ebt_tables);
static struct xt_target ebt_standard_target = {
.name = "standard",
@@ -315,9 +314,11 @@ find_inlist_lock(struct list_head *head, const char *name, const char *prefix,
}
static inline struct ebt_table *
-find_table_lock(const char *name, int *error, struct mutex *mutex)
+find_table_lock(struct net *net, const char *name, int *error,
+ struct mutex *mutex)
{
- return find_inlist_lock(&ebt_tables, name, "ebtable_", error, mutex);
+ return find_inlist_lock(&net->xt.tables[NFPROTO_BRIDGE], name,
+ "ebtable_", error, mutex);
}
static inline int
@@ -944,7 +945,7 @@ static void get_counters(struct ebt_counter *oldcounters,
}
/* replace the table */
-static int do_replace(void __user *user, unsigned int len)
+static int do_replace(struct net *net, void __user *user, unsigned int len)
{
int ret, i, countersize;
struct ebt_table_info *newinfo;
@@ -1016,7 +1017,7 @@ static int do_replace(void __user *user, unsigned int len)
if (ret != 0)
goto free_counterstmp;
- t = find_table_lock(tmp.name, &ret, &ebt_mutex);
+ t = find_table_lock(net, tmp.name, &ret, &ebt_mutex);
if (!t) {
ret = -ENOENT;
goto free_iterate;
@@ -1097,7 +1098,7 @@ free_newinfo:
return ret;
}
-int ebt_register_table(struct ebt_table *table)
+struct ebt_table *ebt_register_table(struct net *net, struct ebt_table *table)
{
struct ebt_table_info *newinfo;
struct ebt_table *t;
@@ -1109,14 +1110,21 @@ int ebt_register_table(struct ebt_table *table)
repl->entries_size == 0 ||
repl->counters || table->private) {
BUGPRINT("Bad table data for ebt_register_table!!!\n");
- return -EINVAL;
+ return ERR_PTR(-EINVAL);
+ }
+
+ /* Don't add one table to multiple lists. */
+ table = kmemdup(table, sizeof(struct ebt_table), GFP_KERNEL);
+ if (!table) {
+ ret = -ENOMEM;
+ goto out;
}
countersize = COUNTER_OFFSET(repl->nentries) * nr_cpu_ids;
newinfo = vmalloc(sizeof(*newinfo) + countersize);
ret = -ENOMEM;
if (!newinfo)
- return -ENOMEM;
+ goto free_table;
p = vmalloc(repl->entries_size);
if (!p)
@@ -1148,7 +1156,7 @@ int ebt_register_table(struct ebt_table *table)
if (table->check && table->check(newinfo, table->valid_hooks)) {
BUGPRINT("The table doesn't like its own initial data, lol\n");
- return -EINVAL;
+ return ERR_PTR(-EINVAL);
}
table->private = newinfo;
@@ -1157,7 +1165,7 @@ int ebt_register_table(struct ebt_table *table)
if (ret != 0)
goto free_chainstack;
- list_for_each_entry(t, &ebt_tables, list) {
+ list_for_each_entry(t, &net->xt.tables[NFPROTO_BRIDGE], list) {
if (strcmp(t->name, table->name) == 0) {
ret = -EEXIST;
BUGPRINT("Table name already exists\n");
@@ -1170,9 +1178,9 @@ int ebt_register_table(struct ebt_table *table)
ret = -ENOENT;
goto free_unlock;
}
- list_add(&table->list, &ebt_tables);
+ list_add(&table->list, &net->xt.tables[NFPROTO_BRIDGE]);
mutex_unlock(&ebt_mutex);
- return 0;
+ return table;
free_unlock:
mutex_unlock(&ebt_mutex);
free_chainstack:
@@ -1184,7 +1192,10 @@ free_chainstack:
vfree(newinfo->entries);
free_newinfo:
vfree(newinfo);
- return ret;
+free_table:
+ kfree(table);
+out:
+ return ERR_PTR(ret);
}
void ebt_unregister_table(struct ebt_table *table)
@@ -1198,6 +1209,10 @@ void ebt_unregister_table(struct ebt_table *table)
mutex_lock(&ebt_mutex);
list_del(&table->list);
mutex_unlock(&ebt_mutex);
+ EBT_ENTRY_ITERATE(table->private->entries, table->private->entries_size,
+ ebt_cleanup_entry, NULL);
+ if (table->private->nentries)
+ module_put(table->me);
vfree(table->private->entries);
if (table->private->chainstack) {
for_each_possible_cpu(i)
@@ -1205,10 +1220,11 @@ void ebt_unregister_table(struct ebt_table *table)
vfree(table->private->chainstack);
}
vfree(table->private);
+ kfree(table);
}
/* userspace just supplied us with counters */
-static int update_counters(void __user *user, unsigned int len)
+static int update_counters(struct net *net, void __user *user, unsigned int len)
{
int i, ret;
struct ebt_counter *tmp;
@@ -1228,7 +1244,7 @@ static int update_counters(void __user *user, unsigned int len)
return -ENOMEM;
}
- t = find_table_lock(hlp.name, &ret, &ebt_mutex);
+ t = find_table_lock(net, hlp.name, &ret, &ebt_mutex);
if (!t)
goto free_tmp;
@@ -1386,10 +1402,10 @@ static int do_ebt_set_ctl(struct sock *sk,
switch(cmd) {
case EBT_SO_SET_ENTRIES:
- ret = do_replace(user, len);
+ ret = do_replace(sock_net(sk), user, len);
break;
case EBT_SO_SET_COUNTERS:
- ret = update_counters(user, len);
+ ret = update_counters(sock_net(sk), user, len);
break;
default:
ret = -EINVAL;
@@ -1406,7 +1422,7 @@ static int do_ebt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
if (copy_from_user(&tmp, user, sizeof(tmp)))
return -EFAULT;
- t = find_table_lock(tmp.name, &ret, &ebt_mutex);
+ t = find_table_lock(sock_net(sk), tmp.name, &ret, &ebt_mutex);
if (!t)
return ret;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 08:59:51 +0000