From c753796769e4fb0cd813b6e5801b3c01f4681d4f Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Thu, 11 Nov 2010 17:07:48 -0800
Subject: ipv4: Make rt->fl.iif tests lest obscure.

When we test rt->fl.iif against zero, we're seeing if it's
an output or an input route.

Make that explicit with some helper functions.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/decnet/dn_route.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'net/decnet')

diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 94a9eb1d313..474d54dd08c 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -1181,7 +1181,7 @@ static int __dn_route_output_key(struct dst_entry **pprt, const struct flowi *fl
 			if ((flp->fld_dst == rt->fl.fld_dst) &&
 			    (flp->fld_src == rt->fl.fld_src) &&
 			    (flp->mark == rt->fl.mark) &&
-			    (rt->fl.iif == 0) &&
+			    dn_is_output_route(rt) &&
 			    (rt->fl.oif == flp->oif)) {
 				dst_use(&rt->dst, jiffies);
 				rcu_read_unlock_bh();
@@ -1512,7 +1512,7 @@ static int dn_rt_fill_info(struct sk_buff *skb, u32 pid, u32 seq,
 	if (rtnl_put_cacheinfo(skb, &rt->dst, 0, 0, 0, expires,
 			       rt->dst.error) < 0)
 		goto rtattr_failure;
-	if (rt->fl.iif)
+	if (dn_is_input_route(rt))
 		RTA_PUT(skb, RTA_IIF, sizeof(int), &rt->fl.iif);
 
 	nlh->nlmsg_len = skb_tail_pointer(skb) - b;
-- 
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