From 687509e6e5592f4acecfa80a8466a2c789a3b641 Mon Sep 17 00:00:00 2001
From: "Eric W. Biederman" <ebiederm@xmission.com>
Date: Fri, 7 Dec 2007 00:47:47 -0800
Subject: [PATCH] --- yaml --- r: 78363 b: refs/heads/master c:
 877a9bff3889512d7326d6bf0ba6ed3ddda6d772 h: refs/heads/master i:   78361:
 bb259b3bd1971d25173b81b5005f29cad8e5d7bc   78359:
 5be8fa09e823902fe33e46679bfdf9c304dde939 v: v3

---
 [refs]                    |  2 +-
 trunk/net/ipv4/fib_trie.c | 47 ++++++++++++++++++++++++++++-----------
 2 files changed, 35 insertions(+), 14 deletions(-)

diff --git a/[refs] b/[refs]
index 108cb86fc46e..05143a983547 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: bb803175865dd030420eebbc87298414c7725019
+refs/heads/master: 877a9bff3889512d7326d6bf0ba6ed3ddda6d772
diff --git a/trunk/net/ipv4/fib_trie.c b/trunk/net/ipv4/fib_trie.c
index 1010b469d7d3..13a80aa911d8 100644
--- a/trunk/net/ipv4/fib_trie.c
+++ b/trunk/net/ipv4/fib_trie.c
@@ -164,7 +164,6 @@ static struct tnode *halve(struct trie *t, struct tnode *tn);
 static void tnode_free(struct tnode *tn);
 
 static struct kmem_cache *fn_alias_kmem __read_mostly;
-static struct trie *trie_local = NULL, *trie_main = NULL;
 
 static inline struct tnode *node_parent(struct node *node)
 {
@@ -2002,11 +2001,6 @@ struct fib_table * __init fib_hash_init(u32 id)
 
 	trie_init(t);
 
-	if (id == RT_TABLE_LOCAL)
-		trie_local = t;
-	else if (id == RT_TABLE_MAIN)
-		trie_main = t;
-
 	if (id == RT_TABLE_LOCAL)
 		printk(KERN_INFO "IPv4 FIB: Using LC-trie version %s\n", VERSION);
 
@@ -2016,6 +2010,7 @@ struct fib_table * __init fib_hash_init(u32 id)
 #ifdef CONFIG_PROC_FS
 /* Depth first Trie walk iterator */
 struct fib_trie_iter {
+	struct trie *trie_local, *trie_main;
 	struct tnode *tnode;
 	struct trie *trie;
 	unsigned index;
@@ -2182,7 +2177,20 @@ static void trie_show_stats(struct seq_file *seq, struct trie_stat *stat)
 
 static int fib_triestat_seq_show(struct seq_file *seq, void *v)
 {
+	struct trie *trie_local, *trie_main;
 	struct trie_stat *stat;
+	struct fib_table *tb;
+
+	trie_local = NULL;
+	tb = fib_get_table(RT_TABLE_LOCAL);
+	if (tb)
+		trie_local = (struct trie *) tb->tb_data;
+
+	trie_main = NULL;
+	tb = fib_get_table(RT_TABLE_MAIN);
+	if (tb)
+		trie_main = (struct trie *) tb->tb_data;
+
 
 	stat = kmalloc(sizeof(*stat), GFP_KERNEL);
 	if (!stat)
@@ -2226,13 +2234,13 @@ static struct node *fib_trie_get_idx(struct fib_trie_iter *iter,
 	loff_t idx = 0;
 	struct node *n;
 
-	for (n = fib_trie_get_first(iter, trie_local);
+	for (n = fib_trie_get_first(iter, iter->trie_local);
 	     n; ++idx, n = fib_trie_get_next(iter)) {
 		if (pos == idx)
 			return n;
 	}
 
-	for (n = fib_trie_get_first(iter, trie_main);
+	for (n = fib_trie_get_first(iter, iter->trie_main);
 	     n; ++idx, n = fib_trie_get_next(iter)) {
 		if (pos == idx)
 			return n;
@@ -2242,10 +2250,23 @@ static struct node *fib_trie_get_idx(struct fib_trie_iter *iter,
 
 static void *fib_trie_seq_start(struct seq_file *seq, loff_t *pos)
 {
+	struct fib_trie_iter *iter = seq->private;
+	struct fib_table *tb;
+
+	if (!iter->trie_local) {
+		tb = fib_get_table(RT_TABLE_LOCAL);
+		if (tb)
+			iter->trie_local = (struct trie *) tb->tb_data;
+	}
+	if (!iter->trie_main) {
+		tb = fib_get_table(RT_TABLE_MAIN);
+		if (tb)
+			iter->trie_main = (struct trie *) tb->tb_data;
+	}
 	rcu_read_lock();
 	if (*pos == 0)
 		return SEQ_START_TOKEN;
-	return fib_trie_get_idx(seq->private, *pos - 1);
+	return fib_trie_get_idx(iter, *pos - 1);
 }
 
 static void *fib_trie_seq_next(struct seq_file *seq, void *v, loff_t *pos)
@@ -2263,8 +2284,8 @@ static void *fib_trie_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 		return v;
 
 	/* continue scan in next trie */
-	if (iter->trie == trie_local)
-		return fib_trie_get_first(iter, trie_main);
+	if (iter->trie == iter->trie_local)
+		return fib_trie_get_first(iter, iter->trie_main);
 
 	return NULL;
 }
@@ -2330,7 +2351,7 @@ static int fib_trie_seq_show(struct seq_file *seq, void *v)
 		return 0;
 
 	if (!node_parent(n)) {
-		if (iter->trie == trie_local)
+		if (iter->trie == iter->trie_local)
 			seq_puts(seq, "<local>:\n");
 		else
 			seq_puts(seq, "<main>:\n");
@@ -2429,7 +2450,7 @@ static int fib_route_seq_show(struct seq_file *seq, void *v)
 		return 0;
 	}
 
-	if (iter->trie == trie_local)
+	if (iter->trie == iter->trie_local)
 		return 0;
 	if (IS_TNODE(l))
 		return 0;