[IPV4] SNMP: Support InNoRoutes

An IP datagram which is being discarded because of no routes in the
forwarding path should be counted as InNoRoutes.

Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 324e7e0fdb2a..63ab5230c611 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -340,6 +340,8 @@ static inline int ip_rcv_finish(struct sk_buff *skb)
                 if (unlikely(err)) {
                         if (err == -EHOSTUNREACH)
                                 IP_INC_STATS_BH(IPSTATS_MIB_INADDRERRORS);
+                        else if (err == -ENETUNREACH)
+                                IP_INC_STATS_BH(IPSTATS_MIB_INNOROUTES);
                         goto drop;
                 }
         }