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Commit 4fd551d7 authored by David S. Miller's avatar David S. Miller
Browse files

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.

Adjust the only user, ipmr_rt_fib_lookup(), for greater correctness of
the flowi4_oif and flowi4_iif values, thanks to feedback from Julian
Anastasov.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 93ac5341

include/net/route.h

+0 −1
Original line number Diff line number Diff line
@@ -50,7 +50,6 @@ struct rtable { 


	int			rt_route_iif;

	int			rt_iif;

	int			rt_oif;



	/* Info on neighbour */

	__be32			rt_gateway;

net/ipv4/ipmr.c

+5 −2
Original line number Diff line number Diff line
@@ -1795,8 +1795,11 @@ 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_oif = (rt_is_output_route(rt) ?

			       skb->dev->ifindex : 0),

		.flowi4_iif = (rt_is_output_route(rt) ?

			       net->loopback_dev->ifindex :

			       skb->dev->ifindex),

		.flowi4_mark = skb->mark,

	};

	struct mr_table *mrt;

net/ipv4/route.c

+0 −5
Original line number Diff line number Diff line
@@ -1332,7 +1332,6 @@ 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;
@@ -1463,7 +1462,6 @@ 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;
@@ -1642,7 +1640,6 @@ 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;
@@ -1808,7 +1805,6 @@ 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;
@@ -2085,7 +2081,6 @@ 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);

net/ipv4/xfrm4_policy.c

+0 −1
Original line number Diff line number Diff line
@@ -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);