diff mbox

ipv4: distinguish EHOSTUNREACH from the ENETUNREACH

Message ID 52FDEF4E.3010806@cn.fujitsu.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Duan Jiong Feb. 14, 2014, 10:26 a.m. UTC
since commit 251da413("ipv4: Cache ip_error() routes even when not forwarding."),
the counter IPSTATS_MIB_INADDRERRORS can't work correctly, because the value of
err was always set to ENETUNREACH.

Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
---
 net/ipv4/route.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

Comments

David Miller Feb. 17, 2014, 4:46 a.m. UTC | #1
From: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Date: Fri, 14 Feb 2014 18:26:22 +0800

> since commit 251da413("ipv4: Cache ip_error() routes even when not forwarding."),
> the counter IPSTATS_MIB_INADDRERRORS can't work correctly, because the value of
> err was always set to ENETUNREACH.
> 
> Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>

Applied, thanks.
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diff mbox

Patch

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 25071b4..6f6dd85 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1695,8 +1695,11 @@  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 (err != 0) {
+		if (!IN_DEV_FORWARD(in_dev))
+			err = -EHOSTUNREACH;
 		goto no_route;
+	}
 
 	RT_CACHE_STAT_INC(in_slow_tot);
 
@@ -1712,8 +1715,10 @@  static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 		goto local_input;
 	}
 
-	if (!IN_DEV_FORWARD(in_dev))
+	if (!IN_DEV_FORWARD(in_dev)) {
+		err = -EHOSTUNREACH;
 		goto no_route;
+	}
 	if (res.type != RTN_UNICAST)
 		goto martian_destination;