diff options
| author | Haishuang Yan <yanhaishuang@cmss.chinamobile.com> | 2017-12-20 05:21:46 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-24 13:01:27 +0300 |
| commit | 9cd6c84e93779530e6b5ae2b6da0befe41ab3e54 (patch) | |
| tree | ddb5b4188a4bca94a02a9959a3fe5deab6cd1bdf /net/ipv4/ip_gre.c | |
| parent | e6cfc525163ea3375113a9dcc234c2cdd8dbf643 (diff) | |
| download | linux-9cd6c84e93779530e6b5ae2b6da0befe41ab3e54.tar.xz | |
ip_gre: fix error path when erspan_rcv failed
[ Upstream commit dd8d5b8c5b22e31079b259b8bfb686f1fac1080a ]
When erspan_rcv call return PACKET_REJECT, we shoudn't call ipgre_rcv to
process packets again, instead send icmp unreachable message in error
path.
Fixes: 84e54fe0a5ea ("gre: introduce native tunnel support for ERSPAN")
Acked-by: William Tu <u9012063@gmail.com>
Cc: William Tu <u9012063@gmail.com>
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/ipv4/ip_gre.c')
| -rw-r--r-- | net/ipv4/ip_gre.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 1933654007c4..c872be8f4065 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -408,11 +408,13 @@ static int gre_rcv(struct sk_buff *skb) if (unlikely(tpi.proto == htons(ETH_P_ERSPAN))) { if (erspan_rcv(skb, &tpi, hdr_len) == PACKET_RCVD) return 0; + goto out; } if (ipgre_rcv(skb, &tpi, hdr_len) == PACKET_RCVD) return 0; +out: icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0); drop: kfree_skb(skb); |