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| author | baker.zhang <baker.kernel@gmail.com> | 2013-10-08 11:36:51 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-10-10 00:08:07 -0400 |
| commit | 4c60f1d67fae632743df9324301e3cb2682f54d4 (patch) | |
| tree | 4fc98e10c4297e290f559024bf9e4a18f2c0d3f3 /net/ipv4/fib_trie.c | |
| parent | 5c70ef85a2f26d8a0e1aaa7b4cbfff44fda36585 (diff) | |
| download | linux-4c60f1d67fae632743df9324301e3cb2682f54d4.tar.bz2 | |
fib_trie: only calc for the un-first node
This is a enhancement.
for the first node in fib_trie, newpos is 0, bit is 1.
Only for the leaf or node with unmatched key need calc pos.
Signed-off-by: baker.zhang <baker.kernel@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/fib_trie.c')
| -rw-r--r-- | net/ipv4/fib_trie.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 45c74ba03970..ec9a9ef4ce50 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -1117,12 +1117,8 @@ static struct list_head *fib_insert_node(struct trie *t, u32 key, int plen) * first tnode need some special handling */ - if (tp) - pos = tp->pos+tp->bits; - else - pos = 0; - if (n) { + pos = tp ? tp->pos+tp->bits : 0; newpos = tkey_mismatch(key, pos, n->key); tn = tnode_new(n->key, newpos, 1); } else { |