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ofproto_v1_5_parser: Add OFPActionCopyField support

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OpenFlow Spec 1.5 introduces Copy-Field action which allows to copy
the value from one header or pipeline field into another header or
pipeline field (EXT-320).

This patch add Copy-Field action support.

Signed-off-by: IWASE Yusuke <iwase.yusuke0@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
This commit is contained in:
Yusuke Iwase 2015-07-22 13:50:30 +09:00 committed by FUJITA Tomonori
parent 00a920c440
commit ecb1d55607
1 changed files with 52 additions and 0 deletions
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52
ryu/ofproto/ofproto_v1_5_parser.py
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@ -5588,6 +5588,58 @@ class OFPActionPopPbb(OFPAction):
return cls()
@OFPAction.register_action_type(ofproto.OFPAT_COPY_FIELD,
ofproto.OFP_ACTION_COPY_FIELD_SIZE)
class OFPActionCopyField(OFPAction):
"""
Copy Field action
This action copy value between header and register.
================ ======================================================
Attribute Description
================ ======================================================
n_bits Number of bits to copy.
src_offset Starting bit offset in source.
dst_offset Starting bit offset in destination.
oxm_ids List of ``OFPOxmId`` instances.
The first element of this list, src_oxm_id,
identifies the field where the value is copied from.
The second element of this list, dst_oxm_id,
identifies the field where the value is copied to.
The default is [].
================ ======================================================
"""
def __init__(self, n_bits=0, src_offset=0, dst_offset=0, oxm_ids=[],
type_=None, len_=None):
super(OFPActionCopyField, self).__init__()
self.n_bits = n_bits
self.src_offset = src_offset
self.dst_offset = dst_offset
self.oxm_ids = oxm_ids
@classmethod
def parser(cls, buf, offset):
(type_, len_, n_bits, src_offset, dst_offset) = struct.unpack_from(
ofproto.OFP_ACTION_COPY_FIELD_PACK_STR, buf, offset)
offset += ofproto.OFP_ACTION_COPY_FIELD_SIZE
rest = buf[offset:offset + len_]
oxm_ids = []
while rest:
i, rest = OFPOxmId.parse(rest)
oxm_ids.append(i)
return cls(n_bits, src_offset, dst_offset, oxm_ids, type_, len_)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_ACTION_COPY_FIELD_PACK_STR, buf,
offset, self.type, self.len,
self.n_bits, self.src_offset, self.dst_offset)
for i in self.oxm_ids:
buf += i.serialize()
@OFPAction.register_action_type(ofproto.OFPAT_METER,
ofproto.OFP_ACTION_METER_SIZE)
class OFPActionMeter(OFPAction):