From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 27 Sep 2006 05:21:22 +0000 (-0700)
Subject: [IPV4] bug: open-coded inet_make_mask() in fib_semantic_match() is broken
X-Git-Tag: firefly_0821_release~33232^2~124
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=1e8aa6f125d959d1a9f16a3f15e9ebbc6df63935;p=firefly-linux-kernel-4.4.55.git

[IPV4] bug: open-coded inet_make_mask() in fib_semantic_match() is broken

... and works only on little-endian

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 66b78df1c672..f7567e92cd9e 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -914,8 +914,7 @@ out_fill_res:
 	res->fi = fa->fa_info;
 #ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED
 	res->netmask = mask;
-	res->network = zone &
-		(0xFFFFFFFF >> (32 - prefixlen));
+	res->network = zone & inet_make_mask(prefixlen);
 #endif
 	atomic_inc(&res->fi->fib_clntref);
 	return 0;