1 files changed, 4 insertions, 0 deletions

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index a1b5d5e03064..035db6350037 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1557,6 +1557,10 @@ static int ipgre_newlink(struct net *src_net, struct net_device *dev, struct nla
         if (!tb[IFLA_MTU])
                 dev->mtu = mtu;
 
+        /* Can use a lockless transmit, unless we generate output sequences */
+        if (!(nt->parms.o_flags & GRE_SEQ))
+                dev->features |= NETIF_F_LLTX;
+
         err = register_netdevice(dev);
         if (err)
                 goto out;