net/ipv4: Remove fib table id from rtable

Remove rt_table_id from rtable. It was added for getroute to return the
table id that was hit in the lookup. With the changes for fibmatch the
table id can be extracted from the fib_info returned in the fib_result
so it no longer needs to be in rtable directly.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/vrf.c

@@ -736,7 +736,6 @@ static int vrf_rtable_create(struct net_device *dev)
 		return -ENOMEM;
 
 	rth->dst.output	= vrf_output;
-	rth->rt_table_id = vrf->tb_id;
 
 	rcu_assign_pointer(vrf->rth, rth);
 

include/net/route.h

@@ -65,8 +65,6 @@ struct rtable {
 	/* Miscellaneous cached information */
 	u32			rt_pmtu;
 
-	u32			rt_table_id;
-
 	struct list_head	rt_uncached;
 	struct uncached_list	*rt_uncached_list;
 };

net/ipv4/route.c

@@ -1509,7 +1509,6 @@ struct rtable *rt_dst_alloc(struct net_device *dev,
 		rt->rt_pmtu = 0;
 		rt->rt_gateway = 0;
 		rt->rt_uses_gateway = 0;
-		rt->rt_table_id = 0;
 		INIT_LIST_HEAD(&rt->rt_uncached);
 
 		rt->dst.output = ip_output;
@@ -1727,8 +1726,6 @@ static int __mkroute_input(struct sk_buff *skb,
 	}
 
 	rth->rt_is_input = 1;
-	if (res->table)
-		rth->rt_table_id = res->table->tb_id;
 	RT_CACHE_STAT_INC(in_slow_tot);
 
 	rth->dst.input = ip_forward;
@@ -2001,8 +1998,6 @@ out:	return err;
 	rth->dst.tclassid = itag;
 #endif
 	rth->rt_is_input = 1;
-	if (res->table)
-		rth->rt_table_id = res->table->tb_id;
 
 	RT_CACHE_STAT_INC(in_slow_tot);
 	if (res->type == RTN_UNREACHABLE) {
@@ -2231,8 +2226,6 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
 		return ERR_PTR(-ENOBUFS);
 
 	rth->rt_iif = orig_oif;
-	if (res->table)
-		rth->rt_table_id = res->table->tb_id;
 
 	RT_CACHE_STAT_INC(out_slow_tot);
 
@@ -2762,7 +2755,7 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh,
 		rt->rt_flags |= RTCF_NOTIFY;
 
 	if (rtm->rtm_flags & RTM_F_LOOKUP_TABLE)
-		table_id = rt->rt_table_id;
+		table_id = res.table ? res.table->tb_id : 0;
 
 	if (rtm->rtm_flags & RTM_F_FIB_MATCH) {
 		if (!res.fi) {

net/ipv4/xfrm4_policy.c

@@ -100,7 +100,6 @@ static int xfrm4_fill_dst(struct xfrm_dst *xdst, struct net_device *dev,
 	xdst->u.rt.rt_gateway = rt->rt_gateway;
 	xdst->u.rt.rt_uses_gateway = rt->rt_uses_gateway;
 	xdst->u.rt.rt_pmtu = rt->rt_pmtu;
-	xdst->u.rt.rt_table_id = rt->rt_table_id;
 	INIT_LIST_HEAD(&xdst->u.rt.rt_uncached);
 
 	return 0;