Commit 4c60f1d6 authored Oct 08, 2013 by baker.zhang Committed by David S. Miller Oct 10, 2013

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>

parent 5c70ef85

net/ipv4/fib_trie.c

+1 −5

Original line number	Diff line number	Diff line
		@@ -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 {