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[IPV4]: Move trie_local and trie_main into the proc iterator.

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We only use these variables when displaying the trie in proc so
place them into the iterator to make this explicit.  We should
probably do something smarter to handle the CONFIG_IP_MULTIPLE_TABLES
case but at least this makes it clear that the silliness is limited
to the display in /proc.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman 2007-12-07 00:47:47 -08:00 committed by David S. Miller
parent bb80317586
commit 877a9bff38
1 changed files with 34 additions and 13 deletions
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47
net/ipv4/fib_trie.c
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@ -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;