[PATCH 2/2] ip6_gre: fix error path when ip6erspan_rcv failed
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STALE3233d
From: Haishuang Yan <hidden>
Date: 2017-12-14 16:05:54
Also in:
lkml
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
Same as ipv4 code, when ip6erspan_rcv call return PACKET_REJECT, we
should call icmpv6_send to send icmp unreachable message in error path.
Fixes: 5a963eb61b7c ("ip6_gre: Add ERSPAN native tunnel support")
Cc: William Tu <redacted>
Signed-off-by: Haishuang Yan <redacted>
---
net/ipv6/ip6_gre.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index b8b0e4b..68e7eef 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c@@ -580,12 +580,13 @@ static int gre_rcv(struct sk_buff *skb) if (unlikely(tpi.proto == htons(ETH_P_ERSPAN))) { if (ip6erspan_rcv(skb, hdr_len, &tpi) == PACKET_RCVD) return 0; - goto drop; + goto out; } if (ip6gre_rcv(skb, &tpi) == PACKET_RCVD) return 0; +out: icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0); drop: kfree_skb(skb);
--
1.8.3.1