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Date: Mon, 10 Sep 2018 22:19:47 +0800 From: Haishuang Yan <yanhaishuang@...s.chinamobile.com> To: "David S. Miller" <davem@...emloft.net>, Alexey Kuznetsov <kuznet@....inr.ac.ru> Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Haishuang Yan <yanhaishuang@...s.chinamobile.com>, William Tu <u9012063@...il.com> Subject: [PATCH 1/2] erspan: return PACKET_REJECT when the appropriate tunnel is not found If erspan tunnel hasn't been established, we'd better send icmp port unreachable message after receive erspan packets. Fixes: 84e54fe0a5ea ("gre: introduce native tunnel support for ERSPAN") Cc: William Tu <u9012063@...il.com> Signed-off-by: Haishuang Yan <yanhaishuang@...s.chinamobile.com> --- net/ipv4/ip_gre.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index ae714ae..85a714d 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -328,6 +328,8 @@ static int erspan_rcv(struct sk_buff *skb, struct tnl_ptk_info *tpi, ip_tunnel_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error); return PACKET_RCVD; } + return PACKET_REJECT; + drop: kfree_skb(skb); return PACKET_RCVD; -- 1.8.3.1
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