netdev - [PATCH] ipv6: unneccessary to get address prefix in addrconf_get_prefix

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Date:	Mon, 23 Dec 2013 09:32:38 +0800
From:	roy.qing.li@...il.com
To:	netdev@...r.kernel.org
Subject: [PATCH] ipv6: unneccessary to get address prefix in addrconf_get_prefix_route

From: Li RongQing <roy.qing.li@...il.com>

Since addrconf_get_prefix_route inputs the address prefix to fib6_locate,
which does not uses the data which is out of the prefix_len length,
so do not need to use ipv6_addr_prefix to get address prefix.

Signed-off-by: Li RongQing <roy.qing.li@...il.com>
---
 net/ipv6/addrconf.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 3c3425e..def65f6 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -988,12 +988,9 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp)
 	 * --yoshfuji
 	 */
 	if ((ifp->flags & IFA_F_PERMANENT) && onlink < 1) {
-		struct in6_addr prefix;
 		struct rt6_info *rt;
 
-		ipv6_addr_prefix(&prefix, &ifp->addr, ifp->prefix_len);
-
-		rt = addrconf_get_prefix_route(&prefix,
+		rt = addrconf_get_prefix_route(&ifp->addr,
 					       ifp->prefix_len,
 					       ifp->idev->dev,
 					       0, RTF_GATEWAY | RTF_DEFAULT);
-- 
1.7.10.4

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