diff options
| author | Jesse Gross <jesse@nicira.com> | 2015-03-26 16:53:39 -0700 |
|---|---|---|
| committer | Jesse Gross <jesse@nicira.com> | 2015-04-07 16:26:34 -0700 |
| commit | 6432e527ce4bc1d67b8fe8ec111817b52953b7c3 (patch) | |
| tree | aa866933c46073a4f5819b14ec5ae9d736ff92ab /lib | |
| parent | 6625245743a8621a8eee1fd67add15120ed042f8 (diff) | |
| download | openvswitch-6432e527ce4bc1d67b8fe8ec111817b52953b7c3.tar.gz | |
tunneling: Add check for GRE protocol is Ethernet.
On receive, the userspace GRE code doesn't check the protocol
field. Since OVS only understands Ethernet packets, this adds a
check that the inner protocol is Ethernet and discards other types
of packets.
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Pritesh Kothari <pritesh.kothari@cisco.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/netdev-vport.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/netdev-vport.c b/lib/netdev-vport.c index d4de0d1f1..1ee68bcc1 100644 --- a/lib/netdev-vport.c +++ b/lib/netdev-vport.c @@ -911,6 +911,10 @@ parse_gre_header(struct dp_packet *packet, return -EINVAL; } + if (greh->protocol != htons(ETH_TYPE_TEB)) { + return -EINVAL; + } + hlen = gre_header_len(greh->flags); if (hlen > dp_packet_size(packet)) { return -EINVAL; |