netdev - [PATCH net-next 7/9] net: Remove martian

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Message-Id: <1442962523-3974-8-git-send-email-dsa@cumulusnetworks.com>
Date:	Tue, 22 Sep 2015 15:55:21 -0700
From:	David Ahern <dsa@...ulusnetworks.com>
To:	netdev@...r.kernel.org
Cc:	David Ahern <dsa@...ulusnetworks.com>
Subject: [PATCH net-next 7/9] net: Remove martian_destination label

Move call to ip_handle_martian_dest to various jump sites. The
function only increments a counter and possibly does additional
logging if CONFIG_IP_ROUTE_VERBOSE is enabled.

Signed-off-by: David Ahern <dsa@...ulusnetworks.com>
---
 net/ipv4/route.c | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index b5c3844b85d3..efc8e58c1964 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1791,15 +1791,19 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 	if (ipv4_is_lbcast(daddr) || (saddr == 0 && daddr == 0))
 		goto brd_input;
 
-	if (ipv4_is_zeronet(daddr))
-		goto martian_destination;
+	if (ipv4_is_zeronet(daddr)) {
+		ip_handle_martian_dest(dev, in_dev, daddr, saddr);
+		goto out;
+	}
 
 	/* Following code try to avoid calling IN_DEV_NET_ROUTE_LOCALNET(),
 	 * and call it once if daddr or/and saddr are loopback addresses
 	 */
 	if (ipv4_is_loopback(daddr)) {
-		if (!IN_DEV_NET_ROUTE_LOCALNET(in_dev, net))
-			goto martian_destination;
+		if (!IN_DEV_NET_ROUTE_LOCALNET(in_dev, net)) {
+			ip_handle_martian_dest(dev, in_dev, daddr, saddr);
+			goto out;
+		}
 	} else if (ipv4_is_loopback(saddr)) {
 		if (!IN_DEV_NET_ROUTE_LOCALNET(in_dev, net)) {
 			ip_handle_martian_source(dev, in_dev, skb, daddr, saddr);
@@ -1841,8 +1845,11 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 		err = -EHOSTUNREACH;
 		goto no_route;
 	}
-	if (res.type != RTN_UNICAST)
-		goto martian_destination;
+	if (res.type != RTN_UNICAST) {
+		err = -EINVAL;
+		ip_handle_martian_dest(dev, in_dev, daddr, saddr);
+		goto out;
+	}
 
 	err = ip_mkroute_input(skb, &res, &fl4, in_dev, daddr, saddr, tos);
 out:	return err;
@@ -1876,11 +1883,6 @@ out:	return err;
 	res.fi = NULL;
 	res.table = NULL;
 	goto local_input;
-
-martian_destination:
-	err = -EINVAL;
-	ip_handle_martian_dest(dev, in_dev, daddr, saddr);
-	goto out;
 }
 
 int ip_route_input_noref(struct sk_buff *skb, __be32 daddr, __be32 saddr,
-- 
1.9.1

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