From e06e7c615877026544ad7f8b309d1a3706410383 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@sunset.davemloft.net>
Date: Sun, 10 Jun 2007 17:22:39 -0700
Subject: [IPV4]: The scheduled removal of multipath cached routing support.

With help from Chris Wedgwood.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/ipv4/multipath_random.c | 114 --------------------------------------------
 1 file changed, 114 deletions(-)
 delete mode 100644 net/ipv4/multipath_random.c

(limited to 'net/ipv4/multipath_random.c')

diff --git a/net/ipv4/multipath_random.c b/net/ipv4/multipath_random.c
deleted file mode 100644
index c312785d14d0..000000000000
--- a/net/ipv4/multipath_random.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- *              Random policy for multipath.
- *
- *
- * Version:	$Id: multipath_random.c,v 1.1.2.3 2004/09/21 08:42:11 elueck Exp $
- *
- * Authors:	Einar Lueck <elueck@de.ibm.com><lkml@einar-lueck.de>
- *
- *		This program is free software; you can redistribute it and/or
- *		modify it under the terms of the GNU General Public License
- *		as published by the Free Software Foundation; either version
- *		2 of the License, or (at your option) any later version.
- */
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/timer.h>
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/fcntl.h>
-#include <linux/stat.h>
-#include <linux/socket.h>
-#include <linux/in.h>
-#include <linux/inet.h>
-#include <linux/netdevice.h>
-#include <linux/inetdevice.h>
-#include <linux/igmp.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/module.h>
-#include <linux/mroute.h>
-#include <linux/init.h>
-#include <linux/random.h>
-#include <net/ip.h>
-#include <net/protocol.h>
-#include <linux/skbuff.h>
-#include <net/sock.h>
-#include <net/icmp.h>
-#include <net/udp.h>
-#include <net/raw.h>
-#include <linux/notifier.h>
-#include <linux/if_arp.h>
-#include <linux/netfilter_ipv4.h>
-#include <net/ipip.h>
-#include <net/checksum.h>
-#include <net/ip_mp_alg.h>
-
-#define MULTIPATH_MAX_CANDIDATES 40
-
-static void random_select_route(const struct flowi *flp,
-				struct rtable *first,
-				struct rtable **rp)
-{
-	struct rtable *rt;
-	struct rtable *decision;
-	unsigned char candidate_count = 0;
-
-	/* count all candidate */
-	for (rt = rcu_dereference(first); rt;
-	     rt = rcu_dereference(rt->u.dst.rt_next)) {
-		if ((rt->u.dst.flags & DST_BALANCED) != 0 &&
-		    multipath_comparekeys(&rt->fl, flp))
-			++candidate_count;
-	}
-
-	/* choose a random candidate */
-	decision = first;
-	if (candidate_count > 1) {
-		unsigned char i = 0;
-		unsigned char candidate_no = (unsigned char)
-			(random32() % candidate_count);
-
-		/* find chosen candidate and adjust GC data for all candidates
-		 * to ensure they stay in cache
-		 */
-		for (rt = first; rt; rt = rt->u.dst.rt_next) {
-			if ((rt->u.dst.flags & DST_BALANCED) != 0 &&
-			    multipath_comparekeys(&rt->fl, flp)) {
-				rt->u.dst.lastuse = jiffies;
-
-				if (i == candidate_no)
-					decision = rt;
-
-				if (i >= candidate_count)
-					break;
-
-				i++;
-			}
-		}
-	}
-
-	decision->u.dst.__use++;
-	*rp = decision;
-}
-
-static struct ip_mp_alg_ops random_ops = {
-	.mp_alg_select_route	=	random_select_route,
-};
-
-static int __init random_init(void)
-{
-	return multipath_alg_register(&random_ops, IP_MP_ALG_RANDOM);
-}
-
-static void __exit random_exit(void)
-{
-	multipath_alg_unregister(&random_ops, IP_MP_ALG_RANDOM);
-}
-
-module_init(random_init);
-module_exit(random_exit);
-MODULE_LICENSE("GPL");
-- 
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