#include <net/sock.h>
#include <net/fib_rules.h>
-static LIST_HEAD(rules_ops);
-static DEFINE_SPINLOCK(rules_mod_lock);
-
int fib_default_rule_add(struct fib_rules_ops *ops,
u32 pref, u32 table, u32 flags)
{
r->pref = pref;
r->table = table;
r->flags = flags;
+ r->fr_net = hold_net(ops->fro_net);
/* The lock is not required here, the list in unreacheable
* at the moment this function is called */
struct fib_rules_ops *ops, struct nlmsghdr *nlh,
u32 pid);
-static struct fib_rules_ops *lookup_rules_ops(int family)
+static struct fib_rules_ops *lookup_rules_ops(struct net *net, int family)
{
struct fib_rules_ops *ops;
rcu_read_lock();
- list_for_each_entry_rcu(ops, &rules_ops, list) {
+ list_for_each_entry_rcu(ops, &net->rules_ops, list) {
if (ops->family == family) {
if (!try_module_get(ops->owner))
ops = NULL;
static void flush_route_cache(struct fib_rules_ops *ops)
{
if (ops->flush_cache)
- ops->flush_cache();
+ ops->flush_cache(ops);
}
int fib_rules_register(struct fib_rules_ops *ops)
{
int err = -EEXIST;
struct fib_rules_ops *o;
+ struct net *net;
+
+ net = ops->fro_net;
if (ops->rule_size < sizeof(struct fib_rule))
return -EINVAL;
ops->action == NULL)
return -EINVAL;
- spin_lock(&rules_mod_lock);
- list_for_each_entry(o, &rules_ops, list)
+ spin_lock(&net->rules_mod_lock);
+ list_for_each_entry(o, &net->rules_ops, list)
if (ops->family == o->family)
goto errout;
- list_add_tail_rcu(&ops->list, &rules_ops);
+ hold_net(net);
+ list_add_tail_rcu(&ops->list, &net->rules_ops);
err = 0;
errout:
- spin_unlock(&rules_mod_lock);
+ spin_unlock(&net->rules_mod_lock);
return err;
}
EXPORT_SYMBOL_GPL(fib_rules_register);
-static void cleanup_ops(struct fib_rules_ops *ops)
+void fib_rules_cleanup_ops(struct fib_rules_ops *ops)
{
struct fib_rule *rule, *tmp;
fib_rule_put(rule);
}
}
+EXPORT_SYMBOL_GPL(fib_rules_cleanup_ops);
-int fib_rules_unregister(struct fib_rules_ops *ops)
+void fib_rules_unregister(struct fib_rules_ops *ops)
{
- int err = 0;
- struct fib_rules_ops *o;
+ struct net *net = ops->fro_net;
- spin_lock(&rules_mod_lock);
- list_for_each_entry(o, &rules_ops, list) {
- if (o == ops) {
- list_del_rcu(&o->list);
- cleanup_ops(ops);
- goto out;
- }
- }
-
- err = -ENOENT;
-out:
- spin_unlock(&rules_mod_lock);
+ spin_lock(&net->rules_mod_lock);
+ list_del_rcu(&ops->list);
+ fib_rules_cleanup_ops(ops);
+ spin_unlock(&net->rules_mod_lock);
synchronize_rcu();
-
- return err;
+ release_net(net);
}
EXPORT_SYMBOL_GPL(fib_rules_unregister);
static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
{
- struct net *net = skb->sk->sk_net;
+ struct net *net = sock_net(skb->sk);
struct fib_rule_hdr *frh = nlmsg_data(nlh);
struct fib_rules_ops *ops = NULL;
struct fib_rule *rule, *r, *last = NULL;
struct nlattr *tb[FRA_MAX+1];
int err = -EINVAL, unresolved = 0;
- if (net != &init_net)
- return -EINVAL;
-
if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*frh)))
goto errout;
- ops = lookup_rules_ops(frh->family);
+ ops = lookup_rules_ops(net, frh->family);
if (ops == NULL) {
- err = EAFNOSUPPORT;
+ err = -EAFNOSUPPORT;
goto errout;
}
err = -ENOMEM;
goto errout;
}
+ rule->fr_net = hold_net(net);
if (tb[FRA_PRIORITY])
rule->pref = nla_get_u32(tb[FRA_PRIORITY]);
rule->table = frh_get_table(frh, tb);
if (!rule->pref && ops->default_pref)
- rule->pref = ops->default_pref();
+ rule->pref = ops->default_pref(ops);
err = -EINVAL;
if (tb[FRA_GOTO]) {
return 0;
errout_free:
+ release_net(rule->fr_net);
kfree(rule);
errout:
rules_ops_put(ops);
static int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
{
- struct net *net = skb->sk->sk_net;
+ struct net *net = sock_net(skb->sk);
struct fib_rule_hdr *frh = nlmsg_data(nlh);
struct fib_rules_ops *ops = NULL;
struct fib_rule *rule, *tmp;
struct nlattr *tb[FRA_MAX+1];
int err = -EINVAL;
- if (net != &init_net)
- return -EINVAL;
-
if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*frh)))
goto errout;
- ops = lookup_rules_ops(frh->family);
+ ops = lookup_rules_ops(net, frh->family);
if (ops == NULL) {
- err = EAFNOSUPPORT;
+ err = -EAFNOSUPPORT;
goto errout;
}
static int fib_nl_dumprule(struct sk_buff *skb, struct netlink_callback *cb)
{
- struct net *net = skb->sk->sk_net;
+ struct net *net = sock_net(skb->sk);
struct fib_rules_ops *ops;
int idx = 0, family;
- if (net != &init_net)
- return -EINVAL;
-
family = rtnl_msg_family(cb->nlh);
if (family != AF_UNSPEC) {
/* Protocol specific dump request */
- ops = lookup_rules_ops(family);
+ ops = lookup_rules_ops(net, family);
if (ops == NULL)
return -EAFNOSUPPORT;
}
rcu_read_lock();
- list_for_each_entry_rcu(ops, &rules_ops, list) {
+ list_for_each_entry_rcu(ops, &net->rules_ops, list) {
if (idx < cb->args[0] || !try_module_get(ops->owner))
goto skip;
struct fib_rules_ops *ops, struct nlmsghdr *nlh,
u32 pid)
{
+ struct net *net;
struct sk_buff *skb;
int err = -ENOBUFS;
+ net = ops->fro_net;
skb = nlmsg_new(fib_rule_nlmsg_size(ops, rule), GFP_KERNEL);
if (skb == NULL)
goto errout;
kfree_skb(skb);
goto errout;
}
- err = rtnl_notify(skb, &init_net, pid, ops->nlgroup, nlh, GFP_KERNEL);
+
+ rtnl_notify(skb, net, pid, ops->nlgroup, nlh, GFP_KERNEL);
+ return;
errout:
if (err < 0)
- rtnl_set_sk_err(&init_net, ops->nlgroup, err);
+ rtnl_set_sk_err(net, ops->nlgroup, err);
}
static void attach_rules(struct list_head *rules, struct net_device *dev)
void *ptr)
{
struct net_device *dev = ptr;
+ struct net *net = dev_net(dev);
struct fib_rules_ops *ops;
- if (dev->nd_net != &init_net)
- return NOTIFY_DONE;
-
ASSERT_RTNL();
rcu_read_lock();
switch (event) {
case NETDEV_REGISTER:
- list_for_each_entry(ops, &rules_ops, list)
+ list_for_each_entry(ops, &net->rules_ops, list)
attach_rules(&ops->rules_list, dev);
break;
case NETDEV_UNREGISTER:
- list_for_each_entry(ops, &rules_ops, list)
+ list_for_each_entry(ops, &net->rules_ops, list)
detach_rules(&ops->rules_list, dev);
break;
}
.notifier_call = fib_rules_event,
};
+static int fib_rules_net_init(struct net *net)
+{
+ INIT_LIST_HEAD(&net->rules_ops);
+ spin_lock_init(&net->rules_mod_lock);
+ return 0;
+}
+
+static struct pernet_operations fib_rules_net_ops = {
+ .init = fib_rules_net_init,
+};
+
static int __init fib_rules_init(void)
{
+ int err;
rtnl_register(PF_UNSPEC, RTM_NEWRULE, fib_nl_newrule, NULL);
rtnl_register(PF_UNSPEC, RTM_DELRULE, fib_nl_delrule, NULL);
rtnl_register(PF_UNSPEC, RTM_GETRULE, NULL, fib_nl_dumprule);
- return register_netdevice_notifier(&fib_rules_notifier);
+ err = register_pernet_subsys(&fib_rules_net_ops);
+ if (err < 0)
+ goto fail;
+
+ err = register_netdevice_notifier(&fib_rules_notifier);
+ if (err < 0)
+ goto fail_unregister;
+
+ return 0;
+
+fail_unregister:
+ unregister_pernet_subsys(&fib_rules_net_ops);
+fail:
+ rtnl_unregister(PF_UNSPEC, RTM_NEWRULE);
+ rtnl_unregister(PF_UNSPEC, RTM_DELRULE);
+ rtnl_unregister(PF_UNSPEC, RTM_GETRULE);
+ return err;
}
subsys_initcall(fib_rules_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff