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authorGravatar Martin Varghese <martin.varghese@nokia.com> 2020-02-24 10:58:35 +0530
committerGravatar David S. Miller <davem@davemloft.net> 2020-02-24 13:31:42 -0800
commit4b5f67232d956a5f837082578ba682410ccab498 (patch)
tree67ffe228d2f2ca046679df0b151678fbb20e8302 /include
parentnet: UDP tunnel encapsulation module for tunnelling different protocols like ... (diff)
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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')
-rw-r--r--include/net/bareudp.h1
-rw-r--r--include/uapi/linux/if_link.h1
2 files changed, 2 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,
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index fb4b33af23d5..61e0801c82df 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -596,6 +596,7 @@ enum {
IFLA_BAREUDP_PORT,
IFLA_BAREUDP_ETHERTYPE,
IFLA_BAREUDP_SRCPORT_MIN,
+ IFLA_BAREUDP_MULTIPROTO_MODE,
__IFLA_BAREUDP_MAX
};