netdev - [PATCH 13/15] ipv4: Kill rt->rt

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Message-Id: <20120718.112437.1514603987324499891.davem@davemloft.net>
Date:	Wed, 18 Jul 2012 11:24:37 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	netdev@...r.kernel.org
Subject: [PATCH 13/15] ipv4: Kill rt->rt_oif


Never actually used.

It was being set on output routes to the original OIF specified in the
flow key used for the lookup.

But the only user was in ipmr_rt_fib_lookup() which always runs on an
input route.

Signed-off-by: David S. Miller <davem@...emloft.net>
---
 include/net/route.h     |    1 -
 net/ipv4/ipmr.c         |    1 -
 net/ipv4/route.c        |    5 -----
 net/ipv4/xfrm4_policy.c |    1 -
 4 files changed, 8 deletions(-)

diff --git a/include/net/route.h b/include/net/route.h
index 6d111bc..ee3bf84 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -50,7 +50,6 @@ struct rtable {
 
 	int			rt_route_iif;
 	int			rt_iif;
-	int			rt_oif;
 
 	/* Info on neighbour */
 	__be32			rt_gateway;
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index eee3bf6..fa75f73 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1795,7 +1795,6 @@ static struct mr_table *ipmr_rt_fib_lookup(struct net *net, struct sk_buff *skb)
 		.daddr = iph->daddr,
 		.saddr = iph->saddr,
 		.flowi4_tos = RT_TOS(iph->tos),
-		.flowi4_oif = rt->rt_oif,
 		.flowi4_iif = rt->rt_iif,
 		.flowi4_mark = skb->mark,
 	};
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 2190fc4..4da374c 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1298,7 +1298,6 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 	rth->rt_type	= RTN_MULTICAST;
 	rth->rt_route_iif = dev->ifindex;
 	rth->rt_iif	= dev->ifindex;
-	rth->rt_oif	= 0;
 	rth->rt_pmtu	= 0;
 	rth->rt_gateway	= 0;
 	rth->fi = NULL;
@@ -1429,7 +1428,6 @@ static int __mkroute_input(struct sk_buff *skb,
 	rth->rt_type = res->type;
 	rth->rt_route_iif = in_dev->dev->ifindex;
 	rth->rt_iif 	= in_dev->dev->ifindex;
-	rth->rt_oif 	= 0;
 	rth->rt_pmtu	= 0;
 	rth->rt_gateway	= 0;
 	rth->fi = NULL;
@@ -1608,7 +1606,6 @@ local_input:
 	rth->rt_type	= res.type;
 	rth->rt_route_iif = dev->ifindex;
 	rth->rt_iif	= dev->ifindex;
-	rth->rt_oif	= 0;
 	rth->rt_pmtu	= 0;
 	rth->rt_gateway	= 0;
 	rth->fi = NULL;
@@ -1774,7 +1771,6 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
 	rth->rt_type	= type;
 	rth->rt_route_iif = 0;
 	rth->rt_iif	= orig_oif ? : dev_out->ifindex;
-	rth->rt_oif	= orig_oif;
 	rth->rt_pmtu	= 0;
 	rth->rt_gateway = 0;
 	rth->fi = NULL;
@@ -2050,7 +2046,6 @@ struct dst_entry *ipv4_blackhole_route(struct net *net, struct dst_entry *dst_or
 
 		rt->rt_route_iif = ort->rt_route_iif;
 		rt->rt_iif = ort->rt_iif;
-		rt->rt_oif = ort->rt_oif;
 		rt->rt_pmtu = ort->rt_pmtu;
 
 		rt->rt_genid = rt_genid(net);
diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index 6074b69..3c99b4c 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -81,7 +81,6 @@ static int xfrm4_fill_dst(struct xfrm_dst *xdst, struct net_device *dev,
 
 	xdst->u.rt.rt_route_iif = fl4->flowi4_iif;
 	xdst->u.rt.rt_iif = fl4->flowi4_iif;
-	xdst->u.rt.rt_oif = fl4->flowi4_oif;
 
 	xdst->u.dst.dev = dev;
 	dev_hold(dev);
-- 
1.7.10.4

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