[PATCH 4.18 011/235] erspan: return PACKET_REJECT when the appropriate tunnel is not found

4.18-stable review patch. If anyone has any objections, please let me know. -- From: Haishuang Yan [ Upstream commit 5a64506b5c2c3cdb29d817723205330378075448 ] If erspan tunnel hasn't been established, we'd better send icmp port unreachable message after receive erspan

[PATCH 4.18 011/235] erspan: return PACKET_REJECT when the appropriate tunnel is not found

4.18-stable review patch. If anyone has any objections, please let me know. -- From: Haishuang Yan [ Upstream commit 5a64506b5c2c3cdb29d817723205330378075448 ] If erspan tunnel hasn't been established, we'd better send icmp port unreachable message after receive erspan