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net: erspan: add support for openvswitch
The first patch refactors the erspan header definitions.
Originally, the erspan fields are defined as a group into a __be16 field,
and use mask and offset to access each field. This is more costly due to
calling ntohs/htons and error-prone. The first patch changes it to use
bitfields. The second patch creates erspan.h in UAPI and move the definition
'struct erspan_metadata' to it for later openvswitch to use. The final patch
introduces the new OVS tunnel key attribute, OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS,
to program both v1 and v2 erspan tunnel for openvswitch.
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Signed-off-by: David S. Miller <davem@davemloft.net>
projects / kernel.git / commit