netdev - [PATCH] [IPv6] SNMP: Increment OutNoRoutes when connecting to unreachable network

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Message-Id: <20071206152948.1f593cd5.mitch@linux.vnet.ibm.com>
Date:	Thu, 6 Dec 2007 15:29:48 +0900
From:	Mitsuru Chinen <mitch@...ux.vnet.ibm.com>
To:	netdev@...r.kernel.org
Cc:	David Miller <davem@...emloft.net>
Subject: [PATCH] [IPv6] SNMP: Increment OutNoRoutes when connecting to
 unreachable network

IPv6 stack doesn't increment OutNoRoutes counter when IP datagrams
is being discarded because no route could be found to transmit them
to their destination. IPv6 stack should increment the counter.
Incidentally, IPv4 stack increments that counter in such situation.

Signed-off-by: Mitsuru Chinen <mitch@...ux.vnet.ibm.com>
---
 net/ipv6/ip6_output.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 89cca7c..388a098 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -960,6 +960,8 @@ static int ip6_dst_lookup_tail(struct sock *sk,
 	return 0;
 
 out_err_release:
+	if (err == -ENETUNREACH)
+		IP6_INC_STATS_BH(NULL, IPSTATS_MIB_OUTNOROUTES);
 	dst_release(*dst);
 	*dst = NULL;
 	return err;
-- 
1.5.3.4

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