class NextTablesProperty(Property):
"""Next Tables Property.
This class represents Property with the following types:
OFPTFPT_NEXT_TABLES
OFPTFPT_NEXT_TABLES_MISS
"""
next_table_ids = ListOfInstruction()
def __init__(self, property_type=TableFeaturePropType.OFPTFPT_NEXT_TABLES,
next_table_ids=None):
"""Create a NextTablesProperty with the optional parameters below.
Args:
type(|TableFeaturePropType_v0x04|):
Property Type value of this instance.
next_table_ids (|ListOfInstruction_v0x04|):
List of InstructionGotoTable instances.
"""
super().__init__(property_type)
self.next_table_ids = (ListOfInstruction() if next_table_ids is None
else next_table_ids)
self.update_length()
class InstructionsProperty(Property):
"""Instructions property.
This class represents Property with the following types:
OFPTFPT_INSTRUCTIONS
OFPTFPT_INSTRUCTIONS_MISS
"""
instruction_ids = ListOfInstruction()
def __init__(self,
property_type=TableFeaturePropType.OFPTFPT_INSTRUCTIONS,
instruction_ids=None):
"""Create a InstructionsProperty with the optional parameters below.
Args:
type(|TableFeaturePropType_v0x04|):
Property Type value of this instance.
next_table_ids(|ListOfInstruction_v0x04|):
List of InstructionGotoTable instances.
"""
super().__init__(property_type=property_type)
self.instruction_ids = instruction_ids if instruction_ids else []
self.update_length()
def __init__(self,
xid=None,
cookie=0,
cookie_mask=0,
table_id=0,
command=None,
idle_timeout=0,
hard_timeout=0,
priority=0,
buffer_id=OFP_NO_BUFFER,
out_port=PortNo.OFPP_ANY,
out_group=Group.OFPG_ANY,
flags=FlowModFlags.OFPFF_SEND_FLOW_REM,
match=None,
instructions=None):
"""Create a FlowMod with the optional parameters below.
Args:
xid (int): xid to be used on the message header.
cookie (int): Opaque controller-issued identifier.
cookie_mask (int): Mask used to restrict the cookie bits that must
match when the command is OFPFC_MODIFY* or OFPFC_DELETE*. A
value of 0 indicates no restriction.
table_id (int): ID of the table to put the flow in. For
OFPFC_DELETE_* commands, OFPTT_ALL can also be used to delete
matching flows from all tables.
command (~pyof.v0x04.controller2switch.flow_mod.FlowModCommand):
One of OFPFC_*.
idle_timeout (int): Idle time before discarding (seconds).
hard_timeout (int): Max time before discarding (seconds).
priority (int): Priority level of flow entry.
buffer_id (int): Buffered packet to apply to, or OFP_NO_BUFFER. Not
meaningful for OFPFC_DELETE*.
out_port (int): For OFPFC_DELETE* commands, require matching
entries to include this as an output port. A value of OFPP_ANY
indicates no restriction.
out_group (int): For OFPFC_DELETE* commands, require matching
entries to include this as an output group. A value of OFPG_ANY
indicates no restriction.
flags (~pyof.v0x04.controller2switch.flow_mod.FlowModFlags):
One of OFPFF_*.
match (~pyof.v0x04.common.flow_match.Match):
Fields to match. Variable size.
"""
super().__init__(xid)
self.cookie = cookie
self.cookie_mask = cookie_mask
self.table_id = table_id
self.command = command
self.idle_timeout = idle_timeout
self.hard_timeout = hard_timeout
self.priority = priority
self.buffer_id = buffer_id
self.out_port = out_port
self.out_group = out_group
self.flags = flags
self.match = Match() if match is None else match
self.instructions = instructions or ListOfInstruction()
def _new_list_of_instructions():
"""Crate new ListOfInstruction."""
output = ActionOutput(port=PortNo.OFPP_CONTROLLER)
loa = ListOfActions([output])
instruction = InstructionApplyAction(loa)
return ListOfInstruction([instruction])
class FlowStats(GenericStruct):
"""Body of reply to OFPST_FLOW request."""
length = UBInt16()
table_id = UBInt8()
#: Align to 32 bits.
pad = Pad(1)
duration_sec = UBInt32()
duration_nsec = UBInt32()
priority = UBInt16()
idle_timeout = UBInt16()
hard_timeout = UBInt16()
flags = UBInt16()
#: Align to 64-bits
pad2 = Pad(4)
cookie = UBInt64()
packet_count = UBInt64()
byte_count = UBInt64()
match = Match()
instructions = ListOfInstruction()
def __init__(self, length=None, table_id=None, duration_sec=None,
duration_nsec=None, priority=None, idle_timeout=None,
hard_timeout=None, flags=None, cookie=None, packet_count=None,
byte_count=None, match=None, instructions=None):
"""Create a FlowStats with the optional parameters below.
Args:
length (int): Length of this entry.
table_id (int): ID of table flow came from.
duration_sec (int): Time flow has been alive in seconds.
duration_nsec (int): Time flow has been alive in nanoseconds in
addition to duration_sec.
priority (int): Priority of the entry. Only meaningful when this
is not an exact-match entry.
idle_timeout (int): Number of seconds idle before expiration.
hard_timeout (int): Number of seconds before expiration.
cookie (int): Opaque controller-issued identifier.
packet_count (int): Number of packets in flow.
byte_count (int): Number of bytes in flow.
match (~pyof.v0x04.common.flow_match.Match): Description of fields.
"""
super().__init__()
self.length = length
self.table_id = table_id
self.duration_sec = duration_sec
self.duration_nsec = duration_nsec
self.priority = priority
self.idle_timeout = idle_timeout
self.hard_timeout = hard_timeout
self.flags = flags
self.cookie = cookie
self.packet_count = packet_count
self.byte_count = byte_count
self.match = match
self.instructions = instructions or []
def unpack(self, buff, offset=0):
"""Unpack a binary message into this object's attributes.
Pass the correct length for list unpacking.
Args:
buff (bytes): Binary data package to be unpacked.
offset (int): Where to begin unpacking.
"""
unpack_length = UBInt16()
unpack_length.unpack(buff, offset)
super().unpack(buff[:offset+unpack_length], offset)