[PATCH net-next] lwt: fix rx checksum setting for lwt devices tunneling over ipv6

[Paolo Abeni]

the commit 35e2d1152b22 ("tunnels: Allow IPv6 UDP checksums to be
correctly controlled.") changed the default xmit checksum setting
for lwt vxlan/geneve ipv6 tunnels, so that now the checksum is not
set into external UDP header.
This commit changes the rx checksum setting for both lwt vxlan/geneve
devices created by openvswitch accordingly, so that lwt over ipv6
tunnel pairs are again able to communicate with default values.

Signed-off-by: Paolo Abeni <pab...@redhat.com>
---
 drivers/net/geneve.c          | 3 ++-
 net/openvswitch/vport-vxlan.c | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index 0b14ac3..d8d8f33 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -1441,7 +1441,8 @@ struct net_device *geneve_dev_create_fb(struct net *net, 
const char *name,
                return dev;
 
        err = geneve_configure(net, dev, &geneve_remote_unspec,
-                              0, 0, 0, htons(dst_port), true, 0);
+                              0, 0, 0, htons(dst_port), true,
+                              GENEVE_F_UDP_ZERO_CSUM6_RX);
        if (err) {
                free_netdev(dev);
                return ERR_PTR(err);
diff --git a/net/openvswitch/vport-vxlan.c b/net/openvswitch/vport-vxlan.c
index 1605691..d933cb8 100644
--- a/net/openvswitch/vport-vxlan.c
+++ b/net/openvswitch/vport-vxlan.c
@@ -90,7 +90,7 @@ static struct vport *vxlan_tnl_create(const struct 
vport_parms *parms)
        int err;
        struct vxlan_config conf = {
                .no_share = true,
-               .flags = VXLAN_F_COLLECT_METADATA,
+               .flags = VXLAN_F_COLLECT_METADATA | VXLAN_F_UDP_ZERO_CSUM6_RX,
        };
 
        if (!options) {
-- 
1.8.3.1