netdev - [PATCH][net-next] ipv4: unnecessary to set err on no

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 29 Sep 2014 17:16:38 +0800
From:	roy.qing.li@...il.com
To:	netdev@...r.kernel.org
Subject: [PATCH][net-next] ipv4: unnecessary to set err on no_route path

From: Li RongQing <roy.qing.li@...il.com>

When the code skips to no_route label, it will skip to local_input at last,
then err will be reset on the local_input path before exit function.

Signed-off-by: Li RongQing <roy.qing.li@...il.com>
---
 net/ipv4/route.c |   11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index d4bd68d..403914b 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1704,11 +1704,9 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 	fl4.daddr = daddr;
 	fl4.saddr = saddr;
 	err = fib_lookup(net, &fl4, &res);
-	if (err != 0) {
-		if (!IN_DEV_FORWARD(in_dev))
-			err = -EHOSTUNREACH;
+	if (err != 0)
 		goto no_route;
-	}
+
 
 	if (res.type == RTN_BROADCAST)
 		goto brd_input;
@@ -1721,10 +1719,9 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 		goto local_input;
 	}
 
-	if (!IN_DEV_FORWARD(in_dev)) {
-		err = -EHOSTUNREACH;
+	if (!IN_DEV_FORWARD(in_dev))
 		goto no_route;
-	}
+
 	if (res.type != RTN_UNICAST)
 		goto martian_destination;
 
-- 
1.7.10.4

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html