def mk_simple_flow_mod(match_fields, actions, command=ofp.OFPFC_ADD,
next_table_id=None, **kw):
"""
Convenience function to generare ofp_flow_mod message with OXM BASIC match
composed from the match_fields, and single APPLY_ACTIONS instruction with
a list if ofp_action objects.
:param match_fields: list(ofp_oxm_ofb_field)
:param actions: list(ofp_action)
:param command: one of OFPFC_*
:param kw: additional keyword-based params to ofp_flow_mod
:return: initialized ofp_flow_mod object
"""
instructions = [
ofp.ofp_instruction(
type=ofp.OFPIT_APPLY_ACTIONS,
actions=ofp.ofp_instruction_actions(actions=actions)
)
]
if next_table_id is not None:
instructions.append(ofp.ofp_instruction(
type=ofp.OFPIT_GOTO_TABLE,
goto_table=ofp.ofp_instruction_goto_table(table_id=next_table_id)
))
return ofp.ofp_flow_mod(
command=command,
match=ofp.ofp_match(
type=ofp.OFPMT_OXM,
oxm_fields=[
ofp.ofp_oxm_field(
oxm_class=ofp.OFPXMC_OPENFLOW_BASIC,
ofb_field=field
) for field in match_fields
]
),
instructions=instructions,
**kw
)
def mk_instructions_from_actions(actions):
instructions_action = ofp.ofp_instruction_actions()
instructions_action.actions.extend(actions)
instruction = ofp.ofp_instruction(type=ofp.OFPIT_APPLY_ACTIONS,
actions=instructions_action)
return [instruction]
def loxi_meter_to_ofp_instruction(lo):
return pb2.ofp_instruction(
type=pb2.OFPIT_METER,
meter=pb2.ofp_instruction_meter(meter_id=lo.meter_id))
def loxi_write_actions_to_ofp_instruction(lo):
return pb2.ofp_instruction(type=pb2.OFPIT_WRITE_ACTIONS,
actions=pb2.ofp_instruction_actions(
actions=[to_grpc(a) for a in lo.actions]))
def loxi_write_metadata_to_ofp_instruction(lo):
return pb2.ofp_instruction(
type=pb2.OFPIT_WRITE_METADATA,
write_metadata=pb2.ofp_instruction_write_metadata(
metadata=lo.metadata, metadata_mask=lo.metadata_mask))
def loxi_goto_table_to_ofp_instruction(lo):
return pb2.ofp_instruction(
type=pb2.OFPIT_GOTO_TABLE,
goto_table=pb2.ofp_instruction_goto_table(table_id=lo.table_id))
def loxi_clear_actions_to_ofp_instruction(lo):
return pb2.ofp_instruction(type=pb2.OFPIT_CLEAR_ACTIONS)
def loxi_apply_actions_to_ofp_instruction(lo):
return pb2.ofp_instruction(type=pb2.OFPIT_APPLY_ACTIONS,
actions=pb2.ofp_instruction_actions(
actions=[to_grpc(a) for a in lo.actions]))
