[IPV4]: Fix "ipOutNoRoutes" counter error for TCP and UDP

Signed-off-by: Wei Dong <weidong@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 13 insertions, 3 deletions

diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c
index dd02a45d0f67..0301dd468cf4 100644
--- a/net/ipv4/datagram.c
+++ b/net/ipv4/datagram.c
@@ -50,8 +50,12 @@ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
                                RT_CONN_FLAGS(sk), oif,
                                sk->sk_protocol,
                                inet->sport, usin->sin_port, sk, 1);
-        if (err)
+        if (err) {
+                if (err == -ENETUNREACH)
+                        IP_INC_STATS_BH(IPSTATS_MIB_OUTNOROUTES);
                 return err;
+        }
+
         if ((rt->rt_flags & RTCF_BROADCAST) && !sock_flag(sk, SOCK_BROADCAST)) {
                 ip_rt_put(rt);
                 return -EACCES;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 5a3e7f839fc5..47c61055eb60 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -192,8 +192,11 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
                                RT_CONN_FLAGS(sk), sk->sk_bound_dev_if,
                                IPPROTO_TCP,
                                inet->sport, usin->sin_port, sk, 1);
-        if (tmp < 0)
+        if (tmp < 0) {
+                if (tmp == -ENETUNREACH)
+                        IP_INC_STATS_BH(IPSTATS_MIB_OUTNOROUTES);
                 return tmp;
+        }
 
         if (rt->rt_flags & (RTCF_MULTICAST | RTCF_BROADCAST)) {
                 ip_rt_put(rt);
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 4c7e95fa090d..5da703e699da 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -722,8 +722,11 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                                                  .dport = dport } } };
                 security_sk_classify_flow(sk, &fl);
                 err = ip_route_output_flow(&rt, &fl, sk, 1);
-                if (err)
+                if (err) {
+                        if (err == -ENETUNREACH)
+                                IP_INC_STATS_BH(IPSTATS_MIB_OUTNOROUTES);
                         goto out;
+                }
 
                 err = -EACCES;
                 if ((rt->rt_flags & RTCF_BROADCAST) &&