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Diffstat (limited to 'net/ipv6/ip6_fib.c')
-rw-r--r--net/ipv6/ip6_fib.c161
1 files changed, 93 insertions, 68 deletions
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 04d7749..7b549f0 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -166,16 +166,13 @@ static __inline__ void rt6_release(struct rt6_info *rt)
dst_free(&rt->u.dst);
}
-static struct fib6_table *fib6_main_tbl;
-
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
#define FIB_TABLE_HASHSZ 256
#else
#define FIB_TABLE_HASHSZ 1
#endif
-static struct hlist_head *fib_table_hash;
-static void fib6_link_table(struct fib6_table *tb)
+static void fib6_link_table(struct net *net, struct fib6_table *tb)
{
unsigned int h;
@@ -191,13 +188,11 @@ static void fib6_link_table(struct fib6_table *tb)
* No protection necessary, this is the only list mutatation
* operation, tables never disappear once they exist.
*/
- hlist_add_head_rcu(&tb->tb6_hlist, &fib_table_hash[h]);
+ hlist_add_head_rcu(&tb->tb6_hlist, &net->ipv6.fib_table_hash[h]);
}
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
-static struct fib6_table *fib6_local_tbl;
-
static struct fib6_table *fib6_alloc_table(u32 id)
{
struct fib6_table *table;
@@ -212,26 +207,27 @@ static struct fib6_table *fib6_alloc_table(u32 id)
return table;
}
-struct fib6_table *fib6_new_table(u32 id)
+struct fib6_table *fib6_new_table(struct net *net, u32 id)
{
struct fib6_table *tb;
if (id == 0)
id = RT6_TABLE_MAIN;
- tb = fib6_get_table(id);
+ tb = fib6_get_table(net, id);
if (tb)
return tb;
tb = fib6_alloc_table(id);
if (tb != NULL)
- fib6_link_table(tb);
+ fib6_link_table(net, tb);
return tb;
}
-struct fib6_table *fib6_get_table(u32 id)
+struct fib6_table *fib6_get_table(struct net *net, u32 id)
{
struct fib6_table *tb;
+ struct hlist_head *head;
struct hlist_node *node;
unsigned int h;
@@ -239,7 +235,8 @@ struct fib6_table *fib6_get_table(u32 id)
id = RT6_TABLE_MAIN;
h = id & (FIB_TABLE_HASHSZ - 1);
rcu_read_lock();
- hlist_for_each_entry_rcu(tb, node, &fib_table_hash[h], tb6_hlist) {
+ head = &net->ipv6.fib_table_hash[h];
+ hlist_for_each_entry_rcu(tb, node, head, tb6_hlist) {
if (tb->tb6_id == id) {
rcu_read_unlock();
return tb;
@@ -250,33 +247,32 @@ struct fib6_table *fib6_get_table(u32 id)
return NULL;
}
-static void __init fib6_tables_init(void)
+static void fib6_tables_init(struct net *net)
{
- fib6_link_table(fib6_main_tbl);
- fib6_link_table(fib6_local_tbl);
+ fib6_link_table(net, net->ipv6.fib6_main_tbl);
+ fib6_link_table(net, net->ipv6.fib6_local_tbl);
}
-
#else
-struct fib6_table *fib6_new_table(u32 id)
+struct fib6_table *fib6_new_table(struct net *net, u32 id)
{
- return fib6_get_table(id);
+ return fib6_get_table(net, id);
}
-struct fib6_table *fib6_get_table(u32 id)
+struct fib6_table *fib6_get_table(struct net *net, u32 id)
{
- return fib6_main_tbl;
+ return net->ipv6.fib6_main_tbl;
}
-struct dst_entry *fib6_rule_lookup(struct flowi *fl, int flags,
- pol_lookup_t lookup)
+struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi *fl,
+ int flags, pol_lookup_t lookup)
{
- return (struct dst_entry *) lookup(fib6_main_tbl, fl, flags);
+ return (struct dst_entry *) lookup(net->ipv6.fib6_main_tbl, fl, flags);
}
-static void __init fib6_tables_init(void)
+static void fib6_tables_init(struct net *net)
{
- fib6_link_table(fib6_main_tbl);
+ fib6_link_table(net, net->ipv6.fib6_main_tbl);
}
#endif
@@ -357,11 +353,9 @@ static int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb)
struct fib6_walker_t *w;
struct fib6_table *tb;
struct hlist_node *node;
+ struct hlist_head *head;
int res = 0;
- if (net != &init_net)
- return 0;
-
s_h = cb->args[0];
s_e = cb->args[1];
@@ -390,7 +384,8 @@ static int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb)
for (h = s_h; h < FIB_TABLE_HASHSZ; h++, s_e = 0) {
e = 0;
- hlist_for_each_entry(tb, node, &fib_table_hash[h], tb6_hlist) {
+ head = &net->ipv6.fib_table_hash[h];
+ hlist_for_each_entry(tb, node, head, tb6_hlist) {
if (e < s_e)
goto next;
res = fib6_dump_table(tb, skb, cb);
@@ -1360,12 +1355,13 @@ void fib6_clean_all(int (*func)(struct rt6_info *, void *arg),
{
struct fib6_table *table;
struct hlist_node *node;
+ struct hlist_head *head;
unsigned int h;
rcu_read_lock();
for (h = 0; h < FIB_TABLE_HASHSZ; h++) {
- hlist_for_each_entry_rcu(table, node, &fib_table_hash[h],
- tb6_hlist) {
+ head = &init_net.ipv6.fib_table_hash[h];
+ hlist_for_each_entry_rcu(table, node, head, tb6_hlist) {
write_lock_bh(&table->tb6_lock);
fib6_clean_tree(&table->tb6_root, func, prune, arg);
write_unlock_bh(&table->tb6_lock);
@@ -1466,55 +1462,88 @@ void fib6_run_gc(unsigned long dummy)
spin_unlock_bh(&fib6_gc_lock);
}
-int __init fib6_init(void)
+static int fib6_net_init(struct net *net)
{
- int ret = -ENOMEM;
- fib6_node_kmem = kmem_cache_create("fib6_nodes",
- sizeof(struct fib6_node),
- 0, SLAB_HWCACHE_ALIGN,
- NULL);
- if (!fib6_node_kmem)
- goto out;
+ int ret;
- fib_table_hash = kzalloc(sizeof(*fib_table_hash)*FIB_TABLE_HASHSZ,
- GFP_KERNEL);
- if (!fib_table_hash)
- goto out_kmem_cache_create;
+ ret = -ENOMEM;
+ net->ipv6.fib_table_hash =
+ kzalloc(sizeof(*net->ipv6.fib_table_hash)*FIB_TABLE_HASHSZ,
+ GFP_KERNEL);
+ if (!net->ipv6.fib_table_hash)
+ goto out;
- fib6_main_tbl = kzalloc(sizeof(*fib6_main_tbl), GFP_KERNEL);
- if (!fib6_main_tbl)
+ net->ipv6.fib6_main_tbl = kzalloc(sizeof(*net->ipv6.fib6_main_tbl),
+ GFP_KERNEL);
+ if (!net->ipv6.fib6_main_tbl)
goto out_fib_table_hash;
- fib6_main_tbl->tb6_id = RT6_TABLE_MAIN;
- fib6_main_tbl->tb6_root.leaf = &ip6_null_entry;
- fib6_main_tbl->tb6_root.fn_flags = RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO;
+ net->ipv6.fib6_main_tbl->tb6_id = RT6_TABLE_MAIN;
+ net->ipv6.fib6_main_tbl->tb6_root.leaf = &ip6_null_entry;
+ net->ipv6.fib6_main_tbl->tb6_root.fn_flags =
+ RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO;
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
- fib6_local_tbl = kzalloc(sizeof(*fib6_local_tbl), GFP_KERNEL);
- if (!fib6_local_tbl)
+ net->ipv6.fib6_local_tbl = kzalloc(sizeof(*net->ipv6.fib6_local_tbl),
+ GFP_KERNEL);
+ if (!net->ipv6.fib6_local_tbl)
goto out_fib6_main_tbl;
-
- fib6_local_tbl->tb6_id = RT6_TABLE_LOCAL;
- fib6_local_tbl->tb6_root.leaf = &ip6_null_entry;
- fib6_local_tbl->tb6_root.fn_flags = RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO;
+ net->ipv6.fib6_local_tbl->tb6_id = RT6_TABLE_LOCAL;
+ net->ipv6.fib6_local_tbl->tb6_root.leaf = &ip6_null_entry;
+ net->ipv6.fib6_local_tbl->tb6_root.fn_flags =
+ RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO;
#endif
+ fib6_tables_init(net);
- fib6_tables_init();
-
- ret = __rtnl_register(PF_INET6, RTM_GETROUTE, NULL, inet6_dump_fib);
- if (ret)
- goto out_fib6_local_tbl;
+ ret = 0;
out:
return ret;
-out_fib6_local_tbl:
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
- kfree(fib6_local_tbl);
out_fib6_main_tbl:
+ kfree(net->ipv6.fib6_main_tbl);
#endif
- kfree(fib6_main_tbl);
out_fib_table_hash:
- kfree(fib_table_hash);
+ kfree(net->ipv6.fib_table_hash);
+ goto out;
+ }
+
+static void fib6_net_exit(struct net *net)
+{
+#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+ kfree(net->ipv6.fib6_local_tbl);
+#endif
+ kfree(net->ipv6.fib6_main_tbl);
+ kfree(net->ipv6.fib_table_hash);
+}
+
+static struct pernet_operations fib6_net_ops = {
+ .init = fib6_net_init,
+ .exit = fib6_net_exit,
+};
+
+int __init fib6_init(void)
+{
+ int ret = -ENOMEM;
+ fib6_node_kmem = kmem_cache_create("fib6_nodes",
+ sizeof(struct fib6_node),
+ 0, SLAB_HWCACHE_ALIGN,
+ NULL);
+ if (!fib6_node_kmem)
+ goto out;
+
+ ret = register_pernet_subsys(&fib6_net_ops);
+ if (ret)
+ goto out_kmem_cache_create;
+
+ ret = __rtnl_register(PF_INET6, RTM_GETROUTE, NULL, inet6_dump_fib);
+ if (ret)
+ goto out_unregister_subsys;
+out:
+ return ret;
+
+out_unregister_subsys:
+ unregister_pernet_subsys(&fib6_net_ops);
out_kmem_cache_create:
kmem_cache_destroy(fib6_node_kmem);
goto out;
@@ -1523,10 +1552,6 @@ out_kmem_cache_create:
void fib6_gc_cleanup(void)
{
del_timer(&ip6_fib_timer);
-#ifdef CONFIG_IPV6_MULTIPLE_TABLES
- kfree(fib6_local_tbl);
-#endif
- kfree(fib6_main_tbl);
- kfree(fib_table_hash);
+ unregister_pernet_subsys(&fib6_net_ops);
kmem_cache_destroy(fib6_node_kmem);
}
generated by cgit v1.1 at 2024-05-18 00:17:10 +0000