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Date: Mon, 14 Jan 2008 21:00:08 -0800
From: Stephen Hemminger <stephen.hemminger@...tta.com>
To: unlisted-recipients:; (no To-header on input)
Cc: David Miller <davem@...emloft.net>, robert.olsson@....uu.se,
netdev@...r.kernel.org
Subject: [PATCH 2/6] [IPV4] fib hash|trie initialization
Initialization of the slab cache's should be done when IP is
initialized to make sure of available memory, and that code
can be marked __init.
Signed-off-by: Stephen Hemminger <stephen.hemminger@...tta.com>
---
Applies after statistics (#1) patch for net-2.6.25
include/net/ip_fib.h | 5 +++--
net/ipv4/fib_frontend.c | 9 ++++++---
net/ipv4/fib_hash.c | 24 +++++++++++-------------
net/ipv4/fib_trie.c | 16 ++++++++--------
4 files changed, 28 insertions(+), 26 deletions(-)
--- a/include/net/ip_fib.h 2008-01-14 14:59:32.000000000 -0800
+++ b/include/net/ip_fib.h 2008-01-14 15:01:12.000000000 -0800
@@ -231,8 +231,9 @@ extern int fib_sync_down(__be32 local, s
extern int fib_sync_up(struct net_device *dev);
extern __be32 __fib_res_prefsrc(struct fib_result *res);
-/* Exported by fib_hash.c */
-extern struct fib_table *fib_hash_init(u32 id);
+/* Exported by fib_{hash|trie}.c */
+extern void fib_hash_init(void);
+extern struct fib_table *fib_hash_table(u32 id);
static inline void fib_combine_itag(u32 *itag, struct fib_result *res)
{
--- a/net/ipv4/fib_frontend.c 2008-01-14 14:59:32.000000000 -0800
+++ b/net/ipv4/fib_frontend.c 2008-01-14 15:01:12.000000000 -0800
@@ -53,11 +53,11 @@ static int __net_init fib4_rules_init(st
{
struct fib_table *local_table, *main_table;
- local_table = fib_hash_init(RT_TABLE_LOCAL);
+ local_table = fib_hash_table(RT_TABLE_LOCAL);
if (local_table == NULL)
return -ENOMEM;
- main_table = fib_hash_init(RT_TABLE_MAIN);
+ main_table = fib_hash_table(RT_TABLE_MAIN);
if (main_table == NULL)
goto fail;
@@ -83,7 +83,8 @@ struct fib_table *fib_new_table(struct n
tb = fib_get_table(net, id);
if (tb)
return tb;
- tb = fib_hash_init(id);
+
+ tb = fib_hash_table(id);
if (!tb)
return NULL;
h = id & (FIB_TABLE_HASHSZ - 1);
@@ -1042,6 +1043,8 @@ void __init ip_fib_init(void)
register_pernet_subsys(&fib_net_ops);
register_netdevice_notifier(&fib_netdev_notifier);
register_inetaddr_notifier(&fib_inetaddr_notifier);
+
+ fib_hash_init();
}
EXPORT_SYMBOL(inet_addr_type);
--- a/net/ipv4/fib_hash.c 2008-01-14 14:59:32.000000000 -0800
+++ b/net/ipv4/fib_hash.c 2008-01-14 15:01:12.000000000 -0800
@@ -746,21 +746,19 @@ static int fn_hash_dump(struct fib_table
return skb->len;
}
-struct fib_table *fib_hash_init(u32 id)
+void __init fib_hash_init(void)
{
- struct fib_table *tb;
+ fn_hash_kmem = kmem_cache_create("ip_fib_hash", sizeof(struct fib_node),
+ 0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
+
+ fn_alias_kmem = kmem_cache_create("ip_fib_alias", sizeof(struct fib_alias),
+ 0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
+
+}
- if (fn_hash_kmem == NULL)
- fn_hash_kmem = kmem_cache_create("ip_fib_hash",
- sizeof(struct fib_node),
- 0, SLAB_HWCACHE_ALIGN,
- NULL);
-
- if (fn_alias_kmem == NULL)
- fn_alias_kmem = kmem_cache_create("ip_fib_alias",
- sizeof(struct fib_alias),
- 0, SLAB_HWCACHE_ALIGN,
- NULL);
+struct fib_table *fib_hash_table(u32 id)
+{
+ struct fib_table *tb;
tb = kmalloc(sizeof(struct fib_table) + sizeof(struct fn_hash),
GFP_KERNEL);
--- a/net/ipv4/fib_trie.c 2008-01-14 15:01:12.000000000 -0800
+++ b/net/ipv4/fib_trie.c 2008-01-14 20:57:41.000000000 -0800
@@ -1923,19 +1923,19 @@ out:
return -1;
}
-/* Fix more generic FIB names for init later */
+void __init fib_hash_init(void)
+{
+ fn_alias_kmem = kmem_cache_create("ip_fib_alias", sizeof(struct fib_alias),
+ 0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
+}
-struct fib_table *fib_hash_init(u32 id)
+
+/* Fix more generic FIB names for init later */
+struct fib_table *fib_hash_table(u32 id)
{
struct fib_table *tb;
struct trie *t;
- if (fn_alias_kmem == NULL)
- fn_alias_kmem = kmem_cache_create("ip_fib_alias",
- sizeof(struct fib_alias),
- 0, SLAB_HWCACHE_ALIGN,
- NULL);
-
tb = kmalloc(sizeof(struct fib_table) + sizeof(struct trie),
GFP_KERNEL);
if (tb == NULL)
--
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