diff options
| author |   Martin Varghese <martin.varghese@nokia.com> | 2020-02-24 10:58:35 +0530 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-02-24 13:31:42 -0800 |
| commit | 4b5f67232d956a5f837082578ba682410ccab498 (patch) | |
| tree | 67ffe228d2f2ca046679df0b151678fbb20e8302 /include/net/bareudp.h | |
| parent | net: UDP tunnel encapsulation module for tunnelling different protocols like MPLS, IP, NSH etc. (diff) | |
| download | wireguard-linux-4b5f67232d956a5f837082578ba682410ccab498.tar.xz wireguard-linux-4b5f67232d956a5f837082578ba682410ccab498.zip | |
net: Special handling for IP & MPLS.
Special handling is needed in bareudp module for IP & MPLS as they
support more than one ethertypes.
MPLS has 2 ethertypes. 0x8847 for MPLS unicast and 0x8848 for MPLS multicast.
While decapsulating MPLS packet from UDP packet the tunnel destination IP
address is checked to determine the ethertype. The ethertype of the packet
will be set to 0x8848 if the tunnel destination IP address is a multicast
IP address. The ethertype of the packet will be set to 0x8847 if the
tunnel destination IP address is a unicast IP address.
IP has 2 ethertypes.0x0800 for IPV4 and 0x86dd for IPv6. The version
field of the IP header tunnelled will be checked to determine the ethertype.
This special handling to tunnel additional ethertypes will be disabled
by default and can be enabled using a flag called multiproto. This flag can
be used only with ethertypes 0x8847 and 0x0800.
Signed-off-by: Martin Varghese <martin.varghese@nokia.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/bareudp.h')
| -rw-r--r-- | include/net/bareudp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/bareudp.h b/include/net/bareudp.h index 513fae6f6ba1..cb03f6f15956 100644 --- a/include/net/bareudp.h +++ b/include/net/bareudp.h @@ -10,6 +10,7 @@ struct bareudp_conf { __be16 ethertype; __be16 port; u16 sport_min; + bool multi_proto_mode; }; struct net_device *bareudp_dev_create(struct net *net, const char *name, |