Upstream commit:
commit bc22a0e2ea03b75b51a1f722f93821744b5b5ff1
Author: Nicolas Dichtel <nicolas.dich...@6wind.com>

    iptunnel: make rx/tx bytes counters consistent

    This was already done a long time ago in
    commit 64194c31a0b6 ("inet: Make tunnel RX/TX byte counters more 
consistent")
    but tx path was broken (at least since 3.10).

    Before the patch the gre header was included on tx.

    After the patch:
    $ ping -c1 192.168.0.121 ; ip -s l ls dev gre1
    PING 192.168.0.121 (192.168.0.121) 56(84) bytes of data.
    64 bytes from 192.168.0.121: icmp_req=1 ttl=64 time=2.95 ms

    --- 192.168.0.121 ping statistics ---
    1 packets transmitted, 1 received, 0% packet loss, time 0ms
    rtt min/avg/max/mdev = 2.955/2.955/2.955/0.000 ms
    7: gre1@NONE: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1468 qdisc noqueue state 
UNKNOWN mode DEFAULT group default
        link/gre 10.16.0.249 peer 10.16.0.121
        RX: bytes  packets  errors  dropped overrun mcast
        84         1        0       0       0       0
        TX: bytes  packets  errors  dropped carrier collsns
        84         1        0       0       0       0

    Reported-by: Julien Meunier <julien.meun...@6wind.com>
    Signed-off-by: Nicolas Dichtel <nicolas.dich...@6wind.com>
    Signed-off-by: David S. Miller <da...@davemloft.net>

Signed-off-by: Pravin B Shelar <pshe...@ovn.org>
---
 datapath/linux/compat/ip_tunnels_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/datapath/linux/compat/ip_tunnels_core.c 
b/datapath/linux/compat/ip_tunnels_core.c
index 84684bf..9a7af73 100644
--- a/datapath/linux/compat/ip_tunnels_core.c
+++ b/datapath/linux/compat/ip_tunnels_core.c
@@ -43,7 +43,7 @@ void rpl_iptunnel_xmit(struct sock *sk, struct rtable *rt, 
struct sk_buff *skb,
                       __be16 df, bool xnet)
 {
        struct net_device *dev = skb->dev;
-       int pkt_len = skb->len;
+       int pkt_len = skb->len - skb_inner_network_offset(skb);
        struct iphdr *iph;
        int err;
 
-- 
1.9.1

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