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Diffstat (limited to 'net/ipv4/fib_trie.c')
-rw-r--r--net/ipv4/fib_trie.c24
1 files changed, 17 insertions, 7 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index e320b32373e..ccd3efc6a17 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -50,7 +50,7 @@
* Patrick McHardy <kaber@trash.net>
*/
-#define VERSION "0.404"
+#define VERSION "0.406"
#include <linux/config.h>
#include <asm/uaccess.h>
@@ -84,7 +84,7 @@
#include "fib_lookup.h"
#undef CONFIG_IP_FIB_TRIE_STATS
-#define MAX_CHILDS 16384
+#define MAX_STAT_DEPTH 32
#define KEYLENGTH (8*sizeof(t_key))
#define MASK_PFX(k, l) (((l)==0)?0:(k >> (KEYLENGTH-l)) << (KEYLENGTH-l))
@@ -154,7 +154,7 @@ struct trie_stat {
unsigned int tnodes;
unsigned int leaves;
unsigned int nullpointers;
- unsigned int nodesizes[MAX_CHILDS];
+ unsigned int nodesizes[MAX_STAT_DEPTH];
};
struct trie {
@@ -2040,7 +2040,15 @@ rescan:
static struct node *fib_trie_get_first(struct fib_trie_iter *iter,
struct trie *t)
{
- struct node *n = rcu_dereference(t->trie);
+ struct node *n ;
+
+ if(!t)
+ return NULL;
+
+ n = rcu_dereference(t->trie);
+
+ if(!iter)
+ return NULL;
if (n && IS_TNODE(n)) {
iter->tnode = (struct tnode *) n;
@@ -2072,7 +2080,9 @@ static void trie_collect_stats(struct trie *t, struct trie_stat *s)
int i;
s->tnodes++;
- s->nodesizes[tn->bits]++;
+ if(tn->bits < MAX_STAT_DEPTH)
+ s->nodesizes[tn->bits]++;
+
for (i = 0; i < (1<<tn->bits); i++)
if (!tn->child[i])
s->nullpointers++;
@@ -2102,8 +2112,8 @@ static void trie_show_stats(struct seq_file *seq, struct trie_stat *stat)
seq_printf(seq, "\tInternal nodes: %d\n\t", stat->tnodes);
bytes += sizeof(struct tnode) * stat->tnodes;
- max = MAX_CHILDS-1;
- while (max >= 0 && stat->nodesizes[max] == 0)
+ max = MAX_STAT_DEPTH;
+ while (max > 0 && stat->nodesizes[max-1] == 0)
max--;
pointers = 0;