diff options
author | Denis V. Lunev <den@openvz.org> | 2008-01-10 12:22:17 +0100 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-01-29 00:01:25 +0100 |
commit | 7b1a74fdbb9ec38a9780620fae25519fde4b21ee (patch) | |
tree | a8405f9a3e30cf6750d60aff16e555d4901ce57f /net/ipv4 | |
parent | [IPV4]: Check fib4_rules_init failure. (diff) | |
download | linux-7b1a74fdbb9ec38a9780620fae25519fde4b21ee.tar.xz linux-7b1a74fdbb9ec38a9780620fae25519fde4b21ee.zip |
[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')
-rw-r--r-- | net/ipv4/af_inet.c | 4 | ||||
-rw-r--r-- | net/ipv4/fib_frontend.c | 88 | ||||
-rw-r--r-- | net/ipv4/fib_hash.c | 6 | ||||
-rw-r--r-- | net/ipv4/fib_rules.c | 11 | ||||
-rw-r--r-- | net/ipv4/fib_trie.c | 6 |
5 files changed, 90 insertions, 25 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index d5b8cb1dad67..40ecaae7be32 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1475,15 +1475,11 @@ static int __init ipv4_proc_init(void) goto out_tcp; if (udp4_proc_init()) goto out_udp; - if (fib_proc_init(&init_net)) - goto out_fib; if (ip_misc_proc_init()) goto out_misc; out: return rc; out_misc: - fib_proc_exit(&init_net); -out_fib: udp4_proc_exit(); out_udp: tcp4_proc_exit(); diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index 1bb956b3be28..0484cae02736 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); diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c index 8de21bc4947a..694a072d8090 100644 --- a/net/ipv4/fib_hash.c +++ b/net/ipv4/fib_hash.c @@ -746,11 +746,7 @@ static int fn_hash_dump(struct fib_table *tb, struct sk_buff *skb, struct netlin return skb->len; } -#ifdef CONFIG_IP_MULTIPLE_TABLES -struct fib_table * fib_hash_init(u32 id) -#else -struct fib_table * __init fib_hash_init(u32 id) -#endif +struct fib_table *fib_hash_init(u32 id) { struct fib_table *tb; diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c index 0751734ecf41..1aae61c8ea6a 100644 --- a/net/ipv4/fib_rules.c +++ b/net/ipv4/fib_rules.c @@ -311,11 +311,11 @@ static int __init fib_default_rules_init(void) return 0; } -int __init fib4_rules_init() +int __net_init fib4_rules_init(struct net *net) { int err; - fib_rules_register(&init_net, &fib4_rules_ops); + fib_rules_register(net, &fib4_rules_ops); err = fib_default_rules_init(); if (err < 0) goto fail; @@ -323,6 +323,11 @@ int __init fib4_rules_init() fail: /* also cleans all rules already added */ - fib_rules_unregister(&init_net, &fib4_rules_ops); + fib_rules_unregister(net, &fib4_rules_ops); return err; } + +void __net_exit fib4_rules_exit(struct net *net) +{ + fib_rules_unregister(net, &fib4_rules_ops); +} diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 4bbfaeedf210..92b687e6a472 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -1956,11 +1956,7 @@ out: /* Fix more generic FIB names for init later */ -#ifdef CONFIG_IP_MULTIPLE_TABLES -struct fib_table * fib_hash_init(u32 id) -#else -struct fib_table * __init fib_hash_init(u32 id) -#endif +struct fib_table *fib_hash_init(u32 id) { struct fib_table *tb; struct trie *t; 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