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authorDenis V. Lunev <den@openvz.org>2008-01-10 03:22:17 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-28 15:01:25 -0800
commit7b1a74fdbb9ec38a9780620fae25519fde4b21ee (patch)
treea8405f9a3e30cf6750d60aff16e555d4901ce57f /net/ipv4/fib_frontend.c
parentdbb50165b512f6c9b7aae10af73ae5b6d811f4d0 (diff)
downloadop-kernel-dev-7b1a74fdbb9ec38a9780620fae25519fde4b21ee.zip
op-kernel-dev-7b1a74fdbb9ec38a9780620fae25519fde4b21ee.tar.gz
[NETNS]: Refactor fib initialization so it can handle multiple namespaces.
This patch makes the fib to be initialized as a subsystem for the network namespaces. The code does not handle several namespaces yet, so in case of a creation of a network namespace, the creation/initialization will not occur. Acked-by: Benjamin Thery <benjamin.thery@bull.net> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/fib_frontend.c')
-rw-r--r--net/ipv4/fib_frontend.c88
1 files changed, 80 insertions, 8 deletions
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 1bb956b..0484cae 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -59,7 +59,7 @@ struct fib_table *ip_fib_main_table;
#define FIB_TABLE_HASHSZ 1
static struct hlist_head fib_table_hash[FIB_TABLE_HASHSZ];
-static int __init fib4_rules_init(void)
+static int __net_init fib4_rules_init(struct net *net)
{
ip_fib_local_table = fib_hash_init(RT_TABLE_LOCAL);
if (ip_fib_local_table == NULL)
@@ -863,10 +863,18 @@ static void nl_fib_input(struct sk_buff *skb)
netlink_unicast(fibnl, skb, pid, MSG_DONTWAIT);
}
-static void nl_fib_lookup_init(void)
+static int nl_fib_lookup_init(struct net *net)
{
- fibnl = netlink_kernel_create(&init_net, NETLINK_FIB_LOOKUP, 0,
+ fibnl = netlink_kernel_create(net, NETLINK_FIB_LOOKUP, 0,
nl_fib_input, NULL, THIS_MODULE);
+ if (fibnl == NULL)
+ return -EAFNOSUPPORT;
+ return 0;
+}
+
+static void nl_fib_lookup_exit(struct net *net)
+{
+ sock_put(fibnl);
}
static void fib_disable_ip(struct net_device *dev, int force)
@@ -949,22 +957,86 @@ static struct notifier_block fib_netdev_notifier = {
.notifier_call =fib_netdev_event,
};
-void __init ip_fib_init(void)
+static int __net_init ip_fib_net_init(struct net *net)
{
unsigned int i;
for (i = 0; i < FIB_TABLE_HASHSZ; i++)
INIT_HLIST_HEAD(&fib_table_hash[i]);
- BUG_ON(fib4_rules_init());
+ return fib4_rules_init(net);
+}
- register_netdevice_notifier(&fib_netdev_notifier);
- register_inetaddr_notifier(&fib_inetaddr_notifier);
- nl_fib_lookup_init();
+static void __net_exit ip_fib_net_exit(struct net *net)
+{
+ unsigned int i;
+
+#ifdef CONFIG_IP_MULTIPLE_TABLES
+ fib4_rules_exit(net);
+#endif
+
+ for (i = 0; i < FIB_TABLE_HASHSZ; i++) {
+ struct fib_table *tb;
+ struct hlist_head *head;
+ struct hlist_node *node, *tmp;
+ head = &fib_table_hash[i];
+ hlist_for_each_entry_safe(tb, node, tmp, head, tb_hlist) {
+ hlist_del(node);
+ tb->tb_flush(tb);
+ kfree(tb);
+ }
+ }
+}
+
+static int __net_init fib_net_init(struct net *net)
+{
+ int error;
+
+ error = 0;
+ if (net != &init_net)
+ goto out;
+
+ error = ip_fib_net_init(net);
+ if (error < 0)
+ goto out;
+ error = nl_fib_lookup_init(net);
+ if (error < 0)
+ goto out_nlfl;
+ error = fib_proc_init(net);
+ if (error < 0)
+ goto out_proc;
+out:
+ return error;
+
+out_proc:
+ nl_fib_lookup_exit(net);
+out_nlfl:
+ ip_fib_net_exit(net);
+ goto out;
+}
+
+static void __net_exit fib_net_exit(struct net *net)
+{
+ fib_proc_exit(net);
+ nl_fib_lookup_exit(net);
+ ip_fib_net_exit(net);
+}
+
+static struct pernet_operations fib_net_ops = {
+ .init = fib_net_init,
+ .exit = fib_net_exit,
+};
+
+void __init ip_fib_init(void)
+{
rtnl_register(PF_INET, RTM_NEWROUTE, inet_rtm_newroute, NULL);
rtnl_register(PF_INET, RTM_DELROUTE, inet_rtm_delroute, NULL);
rtnl_register(PF_INET, RTM_GETROUTE, NULL, inet_dump_fib);
+
+ register_pernet_subsys(&fib_net_ops);
+ register_netdevice_notifier(&fib_netdev_notifier);
+ register_inetaddr_notifier(&fib_inetaddr_notifier);
}
EXPORT_SYMBOL(inet_addr_type);
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