linux-kernel - [ 06/49] ipv4: fix definition of FIB_TABLE

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Message-Id: <20130326225840.236713866@linuxfoundation.org>
Date:	Tue, 26 Mar 2013 16:01:03 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, "Denis V. Lunev" <den@...nvz.org>,
	Tingwei Liu <tingw.liu@...il.com>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	"David S. Miller" <davem@...emloft.net>
Subject: [ 06/49] ipv4: fix definition of FIB_TABLE_HASHSZ

3.0-stable review patch.  If anyone has any objections, please let me know.

------------------


From: "Denis V. Lunev" <den@...nvz.org>

[ Upstream commit 5b9e12dbf92b441b37136ea71dac59f05f2673a9 ]

a long time ago by the commit

  commit 93456b6d7753def8760b423ac6b986eb9d5a4a95
  Author: Denis V. Lunev <den@...nvz.org>
  Date:   Thu Jan 10 03:23:38 2008 -0800

    [IPV4]: Unify access to the routing tables.

the defenition of FIB_HASH_TABLE size has obtained wrong dependency:
it should depend upon CONFIG_IP_MULTIPLE_TABLES (as was in the original
code) but it was depended from CONFIG_IP_ROUTE_MULTIPATH

This patch returns the situation to the original state.

The problem was spotted by Tingwei Liu.

Signed-off-by: Denis V. Lunev <den@...nvz.org>
CC: Tingwei Liu <tingw.liu@...il.com>
CC: Alexey Kuznetsov <kuznet@....inr.ac.ru>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 include/net/ip_fib.h |   12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -129,18 +129,16 @@ struct fib_result_nl {
 };
 
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
-
 #define FIB_RES_NH(res)		((res).fi->fib_nh[(res).nh_sel])
-
-#define FIB_TABLE_HASHSZ 2
-
 #else /* CONFIG_IP_ROUTE_MULTIPATH */
-
 #define FIB_RES_NH(res)		((res).fi->fib_nh[0])
+#endif /* CONFIG_IP_ROUTE_MULTIPATH */
 
+#ifdef CONFIG_IP_MULTIPLE_TABLES
 #define FIB_TABLE_HASHSZ 256
-
-#endif /* CONFIG_IP_ROUTE_MULTIPATH */
+#else
+#define FIB_TABLE_HASHSZ 2
+#endif
 
 extern __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh);
 


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