From 4c60f1d67fae632743df9324301e3cb2682f54d4 Mon Sep 17 00:00:00 2001
From: "baker.zhang" <baker.kernel@gmail.com>
Date: Tue, 8 Oct 2013 11:36:51 +0800
Subject: [PATCH] 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>
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