diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/fib_trie.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 281e5e00025f..dea2f80e08c3 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -961,12 +961,12 @@ static struct tnode *fib_find_node(struct trie *t, u32 key) * prefix plus zeros for the bits in the cindex. The index * is the difference between the key and this value. From * this we can actually derive several pieces of data. - * if !(index >> bits) - * we know the value is cindex - * else + * if (index & (~0ul << bits)) * we have a mismatch in skip bits and failed + * else + * we know the value is cindex */ - if (index >> n->bits) + if (index & (~0ul << n->bits)) return NULL; /* we have found a leaf. Prefixes have already been compared */ @@ -1301,12 +1301,12 @@ int fib_table_lookup(struct fib_table *tb, const struct flowi4 *flp, * prefix plus zeros for the "bits" in the prefix. The index * is the difference between the key and this value. From * this we can actually derive several pieces of data. - * if !(index >> bits) - * we know the value is child index - * else + * if (index & (~0ul << bits)) * we have a mismatch in skip bits and failed + * else + * we know the value is cindex */ - if (index >> n->bits) + if (index & (~0ul << n->bits)) break; /* we have found a leaf. Prefixes have already been compared */ |