ipvlan: disable l2e local xmit

euler inclusion
category: bugfix
bugzilla: NA
CVE: NA

-------------------------------------------------

Ipvlan l2e mode will cache skbuff for local xmit in
ipvlan_xmit_mode_l2e. But when tso/gso is disabled,
this would result in performance loss.

So we should stop caching the skbuff when tso/gso is
disabled.
Signed-off-by: Nlinmiaohe <linmiaohe@huawei.com>
Reviewed-by: NWei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: NZhang Xiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: NKeefe Liu <liuqifa@huawei.com>
Reviewed-by: NWei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/net/ipvlan/ipvlan_core.c

@@ -796,8 +796,9 @@ static int ipvlan_xmit_mode_l2e(struct sk_buff *skb, struct net_device *dev)
 					return NET_XMIT_DROP;
 				}
 
-				if (unlikely(ipvlan_l2e_local_xmit_event(ipvlan,
-									 &skb)))
+				if (unlikely((dev->features &
+					(NETIF_F_GSO | NETIF_F_TSO)) &&
+				    ipvlan_l2e_local_xmit_event(ipvlan, &skb)))
 					return NET_XMIT_DROP;
 				return ipvlan_rcv_frame(addr, &skb, true);
 			}