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| author | Robert Olsson <robert.olsson@its.uu.se> | 2006-03-20 21:35:01 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-03-20 21:35:01 -0800 |
| commit | 06ef921d60bbf6f765d1b9492fb4fc88ac7814bd (patch) | |
| tree | c59cb40d0f28621e782b1938ea0bfa5d6720c75a | |
| parent | 5ddf0eb2bfd613e941dd8748870c71da2e5ad409 (diff) | |
| download | linux-rt-06ef921d60bbf6f765d1b9492fb4fc88ac7814bd.tar.gz | |
[IPV4]: fib_trie stats fix
fib_triestats has been buggy and caused oopses some platforms as
openwrt. The patch below should cure those problems.
Signed-off-by: Robert Olsson <robert.olsson@its.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/fib_trie.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 8aa31fe514ee..ccd3efc6a173 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -50,7 +50,7 @@ * Patrick McHardy <kaber@trash.net> */ -#define VERSION "0.405" +#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 { @@ -2080,7 +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++; @@ -2110,8 +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; |