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add initial OF1.2 support

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Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
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FUJITA Tomonori 2012-02-23 12:57:22 +09:00
parent de3308d10c
commit bee5d55e80
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# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation.
# Copyright (C) 2012 Isaku Yamahata <yamahata at valinux co jp>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from struct import calcsize
MAX_XID = 0xffffffff
# define constants
OFP_VERSION = 0x03
OFP_MAX_TABLE_NAME_LEN = 32
OFP_MAX_TABLE_NAME_LEN_STR = str(OFP_MAX_TABLE_NAME_LEN)
OFP_MAX_PORT_NAME_LEN = 16
OFP_TCP_PORT = 6633
OFP_SSL_PORT = 6633
OFP_ETH_ALEN = 6
OFP_ETH_ALEN_STR = str(OFP_ETH_ALEN)
# enum ofp_port_no
OFPP_MAX = 0xffffff00
OFPP_IN_PORT = 0xfffffff8 # Send the packet out the input port. This
# virtual port must be explicitly used
# in order to send back out of the input
# port.
OFPP_TABLE = 0xfffffff9 # Perform actions in flow table.
# NB: This can only be the destination
# port for packet-out messages.
OFPP_NORMAL = 0xfffffffa # Process with normal L2/L3 switching.
OFPP_FLOOD = 0xfffffffb # All physical ports except input port and
# those disabled by STP.
OFPP_ALL = 0xfffffffc # All physical ports except input port.
OFPP_CONTROLLER = 0xfffffffd # Send to controller.
OFPP_LOCAL = 0xfffffffe # Local openflow "port".
OFPP_NONE = 0xffffffff # Not associated with a physical port.
# enum ofp_type
OFPT_HELLO = 0 # Symmetric message
OFPT_ERROR = 1 # Symmetric message
OFPT_ECHO_REQUEST = 2 # Symmetric message
OFPT_ECHO_REPLY = 3 # Symmetric message
OFPT_EXPERIMENTER = 4 # Symmetric message
OFPT_FEATURES_REQUEST = 5 # Controller/switch message
OFPT_FEATURES_REPLY = 6 # Controller/switch message
OFPT_GET_CONFIG_REQUEST = 7 # Controller/switch message
OFPT_GET_CONFIG_REPLY = 8 # Controller/switch message
OFPT_SET_CONFIG = 9 # Controller/switch message
OFPT_PACKET_IN = 10 # Async message
OFPT_FLOW_REMOVED = 11 # Async message
OFPT_PORT_STATUS = 12 # Async message
OFPT_PACKET_OUT = 13 # Controller/switch message
OFPT_FLOW_MOD = 14 # Controller/switch message
OFPT_GROUP_MOD = 15 # Controller/switch message
OFPT_PORT_MOD = 16 # Controller/switch message
OFPT_TABLE_MOD = 17 # Controller/switch message
OFPT_STATS_REQUEST = 18 # Controller/switch message
OFPT_STATS_REPLY = 19 # Controller/switch message
OFPT_BARRIER_REQUEST = 20 # Controller/switch message
OFPT_BARRIER_REPLY = 21 # Controller/switch message
OFPT_QUEUE_GET_CONFIG_REQUEST = 22 # Controller/switch message
OFPT_QUEUE_GET_CONFIG_REPLY = 23 # Controller/switch message
OFPT_ROLE_REQUEST = 24 # Controller/switch message
OFPT_ROLE_REPLY = 25 # Controller/switch message
OFP_HEADER_PACK_STR = '!BBHI'
OFP_HEADER_SIZE = 8
OFP_MSG_SIZE_MAX = 65535
assert calcsize(OFP_HEADER_PACK_STR) == OFP_HEADER_SIZE
# define constants
OFP_DEFAULT_MISS_SEND_LEN = 128
# enum ofp_config_flags
OFPC_FRAG_NORMAL = 0 # No special handling for fragments.
OFPC_FRAG_DROP = 1 # Drop fragments.
OFPC_FRAG_REASM = 2 # Reassemble (only if OFPC_IP_REASM set).
OFPC_FRAG_MASK = 3
OFPC_INVALID_TTL_TO_CONTROLLER = 1 << 2 # Send packets with invalid
# TTL to the controller.
# enum ofp_table
OFPTT_MAX = 0xfe
OFPTT_ALL = 0xff
# enum ofp_table_config
OFPTC_TABLE_MISS_CONTROLLER = 0
OFPTC_TABLE_MISS_CONTINUE = 1 << 0
OFPTC_TABLE_MISS_DROP = 1 << 1
OFPTC_TABLE_MISS_MASK = 3
OFP_SWITCH_CONFIG_PACK_STR = '!HH'
OFP_SWITCH_CONFIG_SIZE = 12
assert (calcsize(OFP_SWITCH_CONFIG_PACK_STR) + OFP_HEADER_SIZE ==
OFP_SWITCH_CONFIG_SIZE)
# enum ofp_capabilities
OFPC_FLOW_STATS = 1 << 0 # Flow statistics.
OFPC_TABLE_STATS = 1 << 1 # Table statistics.
OFPC_PORT_STATS = 1 << 2 # Port statistics.
OFPC_GROUP_STATS = 1 << 3 # 802.1d spanning tree.
OFPC_IP_REASM = 1 << 5 # Can reassemble IP fragments.
OFPC_QUEUE_STATS = 1 << 6 # Queue statistics.
OFPC_PORT_BLOCKED = 1 << 8 # Match IP addresses in ARP pkts.
# enum ofp_port_config
OFPPC_PORT_DOWN = 1 << 0 # Port is administratively down.
OFPPC_NO_RECV = 1 << 2 # Drop all packets recieved by port.
OFPPC_NO_FWD = 1 << 5 # Drop packets forwarded to port.
OFPPC_NO_PACKET_IN = 1 << 6 # Do not send packet-in msgs for port.
# enum ofp_port_state
OFPPS_LINK_DOWN = 1 << 0 # No physical link present.
OFPPS_BLOCKED = 1 << 1 # Port is blocked.
OFPPS_LIVE = 1 << 2 # Live for Fast Failover Group.
# enum ofp_port_features
OFPPF_10MB_HD = 1 << 0 # 10 Mb half-duplex rate support.
OFPPF_10MB_FD = 1 << 1 # 10 Mb full-duplex rate support.
OFPPF_100MB_HD = 1 << 2 # 100 Mb half-duplex rate support.
OFPPF_100MB_FD = 1 << 3 # 100 Mb full-duplex rate support.
OFPPF_1GB_HD = 1 << 4 # 1 Gb half-duplex rate support.
OFPPF_1GB_FD = 1 << 5 # 1 Gb full-duplex rate support.
OFPPF_10GB_FD = 1 << 6 # 10 Gb full-duplex rate support.
OFPPF_40GB_FD = 1 << 7 # 40 Gb full-duplex rate support.
OFPPF_100GB_FD = 1 << 8 # 100 Gb full-duplex rate support.
OFPPF_1TB_FD = 1 << 9 # 1 Tb full-duplex rate support.
OFPPF_OTHER = 1 << 10 # Other rate, not in the list.
OFPPF_COPPER = 1 << 11 # Copper medium.
OFPPF_FIBER = 1 << 12 # Fiber medium.
OFPPF_AUTONEG = 1 << 13 # Auto-negotiation.
OFPPF_PAUSE = 1 << 14 # Pause.
OFPPF_PAUSE_ASYM = 1 << 15 # Asymmetric pause.
_OFP_PORT_PACK_STR = 'I4x' + OFP_ETH_ALEN_STR + 's' + '2x' + \
str(OFP_MAX_PORT_NAME_LEN) + 's' + 'IIIIIIII'
OFP_PORT_PACK_STR = '!' + _OFP_PORT_PACK_STR
OFP_PORT_SIZE = 64
assert calcsize(OFP_PORT_PACK_STR) == OFP_PORT_SIZE
OFP_SWITCH_FEATURES_PACK_STR = '!QIB3xII'
OFP_SWITCH_FEATURES_SIZE = 32
assert (calcsize(OFP_SWITCH_FEATURES_PACK_STR) + OFP_HEADER_SIZE ==
OFP_SWITCH_FEATURES_SIZE)
# enum ofp_port_reason
OFPPR_ADD = 0 # The port was added.
OFPPR_DELETE = 1 # The port was removed.
OFPPR_MODIFY = 2 # Some attribute of the port has changed.
OFP_PORT_STATUS_PACK_STR = '!B7x' + _OFP_PORT_PACK_STR
OFP_PORT_STATUS_DESC_OFFSET = OFP_HEADER_SIZE + 8
OFP_PORT_STATUS_SIZE = 80
assert (calcsize(OFP_PORT_STATUS_PACK_STR) + OFP_HEADER_SIZE ==
OFP_PORT_STATUS_SIZE)
OFP_PORT_MOD_PACK_STR = '!I4x' + OFP_ETH_ALEN_STR + 'B2xIII4x'
OFP_PORT_MOD_SIZE = 40
assert calcsize(OFP_PORT_MOD_PACK_STR) + OFP_HEADER_SIZE == OFP_PORT_MOD_SIZE
# enum ofp_packet_in_reason
OFPR_NO_MATCH = 0 # No matching flow.
OFPR_ACTION = 1 # Action explicitly output to controller.
OFPR_INVALID_TTL = 2 # Packet has invalid TTL.
_OFP_MATCH_PACK_STR = 'HHBBBB'
OFP_MATCH_PACK_STR = '!' + _OFP_MATCH_PACK_STR
OFP_MATCH_SIZE = 8
assert calcsize(OFP_MATCH_PACK_STR) == OFP_MATCH_SIZE
OFP_PACKET_IN_PACK_STR = '!IHBB' # the last 2x is for ofp_packet_in::data
OFP_PACKET_IN_SIZE = 24
OFP_PACKET_IN_DATA_OFFSET = 18
assert calcsize(OFP_PACKET_IN_PACK_STR) + OFP_MATCH_SIZE + OFP_HEADER_SIZE ==\
OFP_PACKET_IN_SIZE
# enum ofp_action_type
OFPAT_OUTPUT = 0 # Output to switch port.
OFPAT_COPY_TTL_OUT = 11 # Copy TTL "outwards" -- from
# next-to-outermost to outermost
OFPAT_COPY_TTL_IN = 12 # Copy TTL "inwards" -- from outermost to
# next-to-outermost
OFPAT_SET_MPLS_TTL = 15 # MPLS TTL.
OFPAT_DEC_MPLS_TTL = 16 # Decrement MPLS TTL
OFPAT_PUSH_VLAN = 17 # Push a new VLAN tag
OFPAT_POP_VLAN = 18 # Pop the outer VLAN tag
OFPAT_PUSH_MPLS = 19 # Push a new MPLS tag
OFPAT_POP_MPLS = 20 # Pop the outer MPLS tag
OFPAT_SET_QUEUE = 21 # Set queue id when outputting to a port
OFPAT_GROUP = 22 # Apply group
OFPAT_SET_NW_TTL = 23 # IP TTL.
OFPAT_DEC_NW_TTL = 24 # Decrement IP TTL.
OFPAT_SET_FIELD = 25 # Set a header field using OXM TLV format.
OFPAT_EXPERIMENTER = 0xffff
OFP_ACTION_OUTPUT_PACK_STR = '!HHIH6x'
OFP_ACTION_OUTPUT_SIZE = 16
assert calcsize(OFP_ACTION_OUTPUT_PACK_STR) == OFP_ACTION_OUTPUT_SIZE
OFP_ACTION_OUTPUT_LEN = 16
# enum ofp_controller_max_len
OFPCML_MAX = 0xffe5 # maximum max_len value which can be used to
# request a specific byte length.
OFPCML_NO_BUFFER = 0xffff # indicates that no buffering should be
# applied and the whole packet is to be
# sent to the controller.
OFP_ACTION_EXPERIMENTER_HEADER_PACK_STR = '!HHI'
OFP_ACTION_EXPERIMENTER_HEADER_SIZE = 8
assert (calcsize(OFP_ACTION_EXPERIMENTER_HEADER_PACK_STR) ==
OFP_ACTION_EXPERIMENTER_HEADER_SIZE)
OFP_ACTION_HEADER_PACK_STR = '!HH4x'
OFP_ACTION_HEADER_SIZE = 8
assert calcsize(OFP_ACTION_HEADER_PACK_STR) == OFP_ACTION_HEADER_SIZE
OFP_PACKET_OUT_PACK_STR = '!IIH6x'
OFP_PACKET_OUT_SIZE = 24
assert (calcsize(OFP_PACKET_OUT_PACK_STR) + OFP_HEADER_SIZE ==
OFP_PACKET_OUT_SIZE)
# enum ofp_flow_mod_command
OFPFC_ADD = 0 # New flow.
OFPFC_MODIFY = 1 # Modify all matching flows.
OFPFC_MODIFY_STRICT = 2 # Modify entry strictly matching wildcards
OFPFC_DELETE = 3 # Delete all matching flows.
OFPFC_DELETE_STRICT = 4 # Strictly match wildcards and priority.
# enum ofp_group_mod_command
OFPGC_ADD = 0 # New group.
OFPGC_MODIFY = 1 # Modify all matching groups.
FPGC_DELETE = 2 # Delete all matching groups.
# enum ofp_match_type
OFPMT_STANDARD = 0 # Deprecated
OFPMT_OXM = 1 # OpenFlow Extensible Match
# enum ofp_mxm_class
OFPXMC_NXM_0 = 0x0000 # Backward compatibility with NXM
OFPXMC_NXM_1 = 0x0001 # Backward compatibility with NXM
OFPXMC_OPENFLOW_BASIC = 0x8000 # Basic class for OpenFlow
OFPXMC_EXPERIMENTER = 0xFFFF # Experimenter class
# enmu oxm_ofb_match_fields
OFPXMT_OFB_IN_PORT = 0 # Switch input port.
OFPXMT_OFB_IN_PHY_PORT = 1 # Switch physical input port.
OFPXMT_OFB_METADATA = 2 # Metadata passed between tables.
OFPXMT_OFB_ETH_DST = 3 # Ethernet destination address.
OFPXMT_OFB_ETH_SRC = 4 # Ethernet source address.
OFPXMT_OFB_ETH_TYPE = 5 # Ethernet frame type.
OFPXMT_OFB_VLAN_VID = 6 # VLAN id.
OFPXMT_OFB_VLAN_PCP = 7 # VLAN priority.
OFPXMT_OFB_IP_DSCP = 8 # IP DSCP (6 bits in ToS field).
OFPXMT_OFB_IP_ECN = 9 # IP ECN (2 bits in ToS field).
OFPXMT_OFB_IP_PROTO = 10 # IP protocol.
OFPXMT_OFB_IPV4_SRC = 11 # IPv4 source address.
OFPXMT_OFB_IPV4_DST = 12 # IPv4 destination address.
OFPXMT_OFB_TCP_SRC = 13 # TCP source port.
OFPXMT_OFB_TCP_DST = 14 # TCP destination port.
OFPXMT_OFB_UDP_SRC = 15 # UDP source port.
OFPXMT_OFB_UDP_DST = 16 # UDP destination port.
OFPXMT_OFB_SCTP_SRC = 17 # SCTP source port.
OFPXMT_OFB_SCTP_DST = 18 # SCTP destination port.
OFPXMT_OFB_ICMPV4_TYPE = 19 # ICMP type.
OFPXMT_OFB_ICMPV4_CODE = 20 # ICMP code.
OFPXMT_OFB_ARP_OP = 21 # ARP opcode.
OFPXMT_OFB_ARP_SPA = 22 # ARP source IPv4 address.
OFPXMT_OFB_ARP_TPA = 23 # ARP target IPv4 address.
OFPXMT_OFB_ARP_SHA = 24 # ARP source hardware address.
OFPXMT_OFB_ARP_THA = 25 # ARP target hardware address.
OFPXMT_OFB_IPV6_SRC = 26 # IPv6 source address.
OFPXMT_OFB_IPV6_DST = 27 # IPv6 destination address.
OFPXMT_OFB_IPV6_FLABEL = 28 # IPv6 Flow Label
OFPXMT_OFB_ICMPV6_TYPE = 29 # ICMPv6 type.
OFPXMT_OFB_ICMPV6_CODE = 30 # ICMPv6 code.
OFPXMT_OFB_IPV6_ND_TARGET = 31 # Target address for ND.
OFPXMT_OFB_IPV6_ND_SLL = 32 # Source link-layer for ND.
OFPXMT_OFB_IPV6_ND_TLL = 33 # Target link-layer for ND.
OFPXMT_OFB_MPLS_LABEL = 34 # MPLS label.
OFPXMT_OFB_MPLS_TC = 35 # MPLS TC.
# enum ofp_vlan_id
OFPVID_PRESENT = 0x1000 # bit that indicate that a VLAN id is set.
OFPVID_NONE = 0x0000 # No VLAN id was set.
# enum ofp_instruction_type
OFPID_GOTO_TABLE = 1 # Setup the next table in the lookup pipeline.
OFPIT_WRITE_METADATA = 2 # Setup the metadata field for use later in
# pipeline.
OFPIT_WRITE_ACTIONS = 3 # Write the action(s) onto the datapath
# action set
OFPIT_APPLY_ACTIONS = 4 # Applies the action(s) immediately
OFPIT_CLEAR_ACTIONS = 5 # Clears all actions from the datapath action
# set
OFPIT_EXPERIMENTER = 0xFFFF # Experimenter instruction
OFP_FLOW_PERMANENT = 0
OFP_DEFAULT_PRIORITY = 0x8000
# enum ofp_flow_mod_flags
OFPFF_SEND_FLOW_REM = 1 << 0 # Send flow removed message when flow
# expires or is deleted.
OFPFF_CHECK_OVERLAP = 1 << 1 # Check for overlapping entries first.
OFPFF_RESET_COUNT = 1 << 2 # Reset flow packet and byte counts.
_OFP_FLOW_MOD_PACK_STR0 = 'QQBBHHHIIIH2x'
OFP_FLOW_MOD_PACK_STR = '!' + _OFP_FLOW_MOD_PACK_STR0 + _OFP_MATCH_PACK_STR
OFP_FLOW_MOD_PACK_STR0 = '!' + _OFP_FLOW_MOD_PACK_STR0
OFP_FLOW_MOD_SIZE = 56
assert (calcsize(OFP_FLOW_MOD_PACK_STR) + OFP_HEADER_SIZE == OFP_FLOW_MOD_SIZE)
# enum ofp_flow_removed_reason
OFPRR_IDLE_TIMEOUT = 0 # Flow idle time exceeded idle_timeout.
OFPRR_HARD_TIMEOUT = 1 # Time exceeded hard_timeout.
OFPRR_DELETE = 2 # Evicted by a DELETE flow mod.
OFPRR_GROUP_DELETE = 3 # Group was removed.
_OFP_FLOW_REMOVED_PACK_STR0 = 'QHBBIIHHQQ'
OFP_FLOW_REMOVED_PACK_STR = '!' + _OFP_FLOW_REMOVED_PACK_STR0 + \
_OFP_MATCH_PACK_STR
OFP_FLOW_REMOVED_PACK_STR0 = '!' + _OFP_FLOW_REMOVED_PACK_STR0
OFP_FLOW_REMOVED_SIZE = 56
assert (calcsize(OFP_FLOW_REMOVED_PACK_STR) + OFP_HEADER_SIZE ==
OFP_FLOW_REMOVED_SIZE)
# enum ofp_group_mod_command
OFPGC_ADD = 0 # New group.
OFPGC_MODIFY = 1 # Modify all matching groups.
OFPGC_DELETE = 2 # Deletes all matching groups.
# enum ofp_group_type
OFPGT_ALL = 0 # All (multicast/broadcast) group.
OFPGT_SELECT = 1 # Select group.
OFPGT_INDIRECT = 2 # Indirect group.
OFPGT_FF = 3 # Fast failover group.
# enum ofp_error_type
OFPET_HELLO_FAILED = 0 # Hello protocol failed.
OFPET_BAD_REQUEST = 1 # Request was not understood.
OFPET_BAD_ACTION = 2 # Error in action description.
OFPET_BAD_INSTRUCTION = 3 # Error in instruction list.
OFPET_BAD_MATCH = 4 # Error in match.
OFPET_FLOW_MOD_FAILED = 5 # Problem modifying flow entry.
OFPET_GROUP_MOD_FAILED = 6 # Problem modifying group entry.
OFPET_PORT_MOD_FAILED = 7 # OFPT_PORT_MOD failed.
OFPET_TABLE_MOD_FAILED = 8 # Table mod request failed.
OFPET_QUEUE_OP_FAILED = 9 # Queue operation failed.
OFPET_SWITCH_CONFIG_FAILED = 10 # Switch config request failed.
OFPET_ROLE_REQUEST_FAILED = 11 # Controller Role request failed.
OFPET_EXPERIMENTER = 0xffff # Experimenter error messages.
# enum ofp_hello_failed_code
OFPHFC_INCOMPATIBLE = 0 # No compatible version.
OFPHFC_EPERM = 1 # Permissions error.
# enum ofp_bad_request_code
OFPBRC_BAD_VERSION = 0 # ofp_header.version not supported.
OFPBRC_BAD_TYPE = 1 # ofp_header.type not supported.
OFPBRC_BAD_STAT = 2 # ofp_stats_msg.type not supported.
OFPBRC_BAD_EXPERIMENTER = 3 # Experimenter id not supported
# (in ofp_experimenter_header
# or ofp_stats_request or ofp_stats_reply).
OFPBRC_BAD_EXP_TYPE = 4 # Experimenter type not supported.
OFPBRC_EPERM = 5 # Permissions error.
OFPBRC_BAD_LEN = 6 # Wrong request length for type.
OFPBRC_BUFFER_EMPTY = 7 # Specified buffer has already been used.
OFPBRC_BUFFER_UNKNOWN = 8 # Specified buffer does not exist.
OFPBRC_BAD_TABLE_ID = 9 # Specified table-id invalid or does not exist.
OFPBRC_IS_SLAVE = 10 # Denied because controller is slave.
OFPBRC_BAD_PORT = 11 # Invalid port.
OFBRC_BAD_PACKET = 12 # Invalid packet in packet-out
# enum ofp_bad_action_code
OFPBAC_BAD_TYPE = 0 # Unknown action type.
OFPBAC_BAD_LEN = 1 # Length problem in actions.
OFPBAC_BAD_EXPERIMENTER = 2 # Unknown experimenter id specified.
OFPBAC_BAD_EXP_TYPE = 3 # Unknown action type for experimenter id.
OFPBAC_BAD_OUT_PORT = 4 # Problem validating output action.
OFPBAC_BAD_ARGUMENT = 5 # Bad action argument.
OFPBAC_EPERM = 6 # Permissions error.
OFPBAC_TOO_MANY = 7 # Can't handle this many actions.
OFPBAC_BAD_QUEUE = 8 # Problem validating output queue.
OFPBAC_BAD_OUT_GROUP = 9 # Invalid group id in forward action.
OFPBAC_MATCH_INCONSISTENT = 10 # Action can't apply for this match,
# or Set-Field missing prerequisite.
OFPBAC_UNSUPPORTED_ORDER = 11 # Action order is unsupported for
# the action list in an Apply-Actions
# instruction
OFPBAC_BAD_TAG = 12 # Actions uses an unsupported tag/encap.
OFBAC_BAD_SET_TYPE = 13 # Unsupported type in SET_FIELD action.
OFPBAC_BAD_SET_LEN = 14 # Length problem in SET_FIELD action.
OFPBAC_BAD_SET_ARGUMENT = 15 # Bad arguement in SET_FIELD action.
# enum ofp_bad_instruction_code
OFPBIC_UNKNOWN_INST = 0 # Unknown instruction.
OFPBIC_UNSUP_INST = 1 # Switch or table does not support
# the instruction.
OFPBIC_BAD_TABLE_ID = 2 # Invalid Table-Id specified
OFPBIC_UNSUP_METADATA = 3 # Metadata value unsupported by datapath.
OFPBIC_UNSUP_METADATA_MASK = 4 # Metadata mask value unsupported by
# datapath.
OFPBIC_BAD_EXPERIMENTER = 5 # Unknown experimenter id specified.
OFPBIC_BAD_EXP_TYPE = 6 # Unknown instruction for experimenter id.
OFPBIC_BAD_EXP_LEN = 7 # Length problem in instrucitons.
OFPBIC_EPERM = 8 # Permissions error.
# enum ofp_bad_match_code
OFPBMC_BAD_TYPE = 0 # Unsupported match type apecified by
# the match.
OFPBMC_BAD_LEN = 1 # Length problem in math.
OFPBMC_BAD_TAG = 2 # Match uses an unsupported tag/encap.
OFPBMC_BAD_DL_ADDR_MASK = 3 # Unsupported datalink addr mask -
# switch does not support arbitrary
# datalink address mask.
OFPBMC_BAD_NW_ADDR_MASK = 4 # Unsupported network addr mask -
# switch does not support arbitrary
# network addres mask.
OFPBMC_BAD_WILDCARDS = 5 # Unsupported combination of fields
# masked or omitted in the match.
OFPBMC_BAD_FIELD = 6 # Unsupported field type in the match.
OFPBMC_BAD_VALUE = 7 # Unsupported value in a match field.
OFPBMC_BAD_MASK = 8 # Unsupported mask specified in the
# match.
OFPBMC_BAD_PREREQ = 9 # A prerequisite was not met.
OFPBMC_DUP_FIELD = 10 # A field type was duplicated.
OFPBMC_EPERM = 11 # Permissions error.
# enum ofp_flow_mod_failed_code
OFPFMFC_UNKNOWN = 0 # Unspecified error.
OFPFMFC_TABLES_FULL = 1 # Flow not added because table was full.
OFPFMFC_BAD_TABLE_ID = 2 # Table does not exist
OFPFMFC_OVERLAP = 3 # Attempted to add overlapping flow
# with CHECK_OVERLAP flag set.
OFPFMFC_EPERM = 4 # Permissions error.
OFPFMFC_BAD_TIMEOUT = 5 # Flow not added because of
# unsupported idle/hard timeout.
OFPFMFC_BAD_COMMAND = 6 # Unsupported or unknown command.
OFPFMFC_BAD_FLAGS = 7 # Unsupported or unknown flags.
# enum ofp_group_mod_failed_code
OFPGMFC_GROUP_EXISTS = 0
OFPGMFC_INVALID_GROUP = 1
OFPGMFC_WEIGHT_UNSUPPORTED = 2 # Switch does not support unequal load
# sharing with select groups.
OFPGMFC_OUT_OF_GROUPS = 3 # The group table is full.
OFPGMFC_OUT_OF_BUCKETS = 4 # The maximum number of action buckets
# for a group has been exceeded.
OFPGMFC_CHAINING_UNSUPPORTED = 5 # Switch does not support groups that
# forward to groups.
OFPGMFC_WATCH_UNSUPPORTED = 6 # This group cannot watch the
# watch_port or watch_group specified.
OFPGMFC_LOOP = 7 # Group entry would cause a loop.
OFPGMFC_UNKNOWN_GROUP = 8 # Group not modified because a group
# MODIFY attempted to modify a
# non-existent group.
OFPGMFC_CHAINED_GROUP = 9 # Group not deleted because another
# group is forwarding to it.
OFPGMFC_BAD_TYPE = 10 # Unsupported or unknown group type.
OFPGMFC_BAD_COMMAND = 11 # Unsupported or unknown command.
OFPGMFC_BAD_BUCKET = 12 # Error in bucket.
OFPGMFC_BAD_WATCH = 13 # Error in watch port/group.
OFPGMFC_EPERM = 14 # Permissions error.
# enum ofp_port_mod_failed_code
OFPPMFC_BAD_PORT = 0 # Specified port does not exist.
OFPPMFC_BAD_HW_ADDR = 1 # Specified hardware address does not
# match the port number.
OFPPMFC_BAD_CONFIG = 2 # Specified config is invalid.
OFPPMFC_BAD_ADVERTISE = 3 # Specified advertise is invalid.
OFPPMFC_EPERM = 4 # Permissions error.
# enum ofp_table_mod_failed_code
OFPTMFC_BAD_TABLE = 0 # Specified table does not exist.
OFPTMFC_BAD_CONFIG = 1 # Specified config is invalid.
OFPTMFC_EPERM = 2 # Permissions error
# enum ofp_queue_op_failed_code
OFPQOFC_BAD_PORT = 0 # Invalid port (or port does not exist).
OFPQOFC_BAD_QUEUE = 1 # Queue does not exist.
OFPQOFC_EPERM = 2 # Permissions error.
# enum ofp_switch_config_failed_code
OFPSCFC_BAD_FLAGS = 0 # Specified flags is invalid.
OFPSCFC_BAD_LEN = 1 # Specified len is invalid.
OFPQCFC_EPERM = 2 # Permissions error.
# enum ofp_role_request_failed_code
OFPRRFC_STALE = 0 # Stale Message: old generation_id.
OFPRRFC_UNSUP = 1 # Controller role change unsupported.
OFPRRFC_BAD_ROLE = 2 # Invalid role.
# enum ofp_queue_properties
OFPQT_MIN_RATE = 1 # Minimum datarate guaranteed.
OFPQT_MAX_RATE = 2 # Maximum datarate.
OFPQT_EXPERIMENTER = 0xffff # Experimenter defined property.
OFP_ERROR_MSG_PACK_STR = '!HH'
OFP_ERROR_MSG_SIZE = 12
assert calcsize(OFP_ERROR_MSG_PACK_STR) + OFP_HEADER_SIZE == OFP_ERROR_MSG_SIZE
# enum ofp_stats_types
OFPST_DESC = 0
OFPST_FLOW = 1
OFPST_AGGREGATE = 2
OFPST_TABLE = 3
OFPST_PORT = 4
OFPST_QUEUE = 5
OFPST_GROUP = 6
OFPST_GROUP_DESC = 7
OFPST_GROUP_FEATURES = 8
OFPST_EXPERIMENTER = 0xffff
# enmu ofp_group_capabilities
OFPGFC_SELECT_WEIGHT = 1 << 0 # Support weight for select groups.
OFPGFC_SELECT_LIVENESS = 1 << 1 # Support liveness for select groups.
OFPGFC_CHAINING = 1 << 2 # Support chaining groups.
OFPGFC_CHAINING_CHECKS = 1 << 3 # Check chaining for loops and delete
_OFP_STATS_MSG_PACK_STR = 'HH4x'
OFP_STATS_MSG_PACK_STR = '!' + _OFP_STATS_MSG_PACK_STR
OFP_STATS_MSG_SIZE = 16
assert calcsize(OFP_STATS_MSG_PACK_STR) + OFP_HEADER_SIZE == OFP_STATS_MSG_SIZE
# enum ofp_controller_role
OFPCR_ROLE_NOCHANGE = 0 # Don't change current role.
OFPCR_ROLE_EQUAL = 1 # Default role, full access.
OFPCR_ROLE_MASTER = 2 # Full access, at most one master.
OFPCR_ROLE_SLAVE = 3 # Read-only access.
# define constants
DESC_STR_LEN = 256
DESC_STR_LEN_STR = str(DESC_STR_LEN)
SERIAL_NUM_LEN = 32
SERIAL_NUM_LEN_STR = str(SERIAL_NUM_LEN)
OFP_DESC_STATS_PACK_STR = '!' + \
DESC_STR_LEN_STR + 'c' + \
DESC_STR_LEN_STR + 'c' + \
DESC_STR_LEN_STR + 'c' + \
SERIAL_NUM_LEN_STR + 'c' + \
DESC_STR_LEN_STR + 'c'
OFP_DESC_STATS_SIZE = 1056
assert calcsize(OFP_DESC_STATS_PACK_STR) == OFP_DESC_STATS_SIZE
OFP_FLOW_STATS_REQUEST_PACK_STR = '!B3xII4xQQ' + _OFP_MATCH_PACK_STR
OFP_FLOW_STATS_REQUEST_SIZE = 40
assert calcsize(OFP_FLOW_STATS_REQUEST_PACK_STR) == OFP_FLOW_STATS_REQUEST_SIZE
OFP_FLOW_STATS_PACK_STR = '!HBxIIHHH6xQQQ' + _OFP_MATCH_PACK_STR
OFP_FLOW_STATS_SIZE = 56
assert calcsize(OFP_FLOW_STATS_PACK_STR) == OFP_FLOW_STATS_SIZE
OFP_AGGREGATE_STATS_REPLY_PACK_STR = '!QQI4x'
OFP_AGGREGATE_STATS_REPLY_SIZE = 24
assert calcsize(OFP_AGGREGATE_STATS_REPLY_PACK_STR) == \
OFP_AGGREGATE_STATS_REPLY_SIZE
OFP_TABLE_STATS_PACK_STR = '!B7x' + OFP_MAX_TABLE_NAME_LEN_STR + \
'cQQIIQQQQIIIIQQ'
OFP_TABLE_STATS_SIZE = 128
assert calcsize(OFP_TABLE_STATS_PACK_STR) == OFP_TABLE_STATS_SIZE
OFP_PORT_STATS_REQUEST_PACK_STR = '!I4x'
OFP_PORT_STATS_REQUEST_SIZE = 8
assert calcsize(OFP_PORT_STATS_REQUEST_PACK_STR) == OFP_PORT_STATS_REQUEST_SIZE
OFP_PORT_STATS_PACK_STR = '!H6xQQQQQQQQQQQQ'
OFP_PORT_STATS_SIZE = 104
assert calcsize(OFP_PORT_STATS_PACK_STR) == OFP_PORT_STATS_SIZE
OFPQ_ALL = 0xffffffff
OFP_QUEUE_STATS_PACK_STR = '!IIQQQ'
OFP_QUEUE_STATS_SIZE = 32
assert calcsize(OFP_QUEUE_STATS_PACK_STR) == OFP_QUEUE_STATS_SIZE
OFP_EXPERIMENTER_STATS_PACK_STR = '!II'
OFP_EXPERIMENTER_STATS_SIZE = 8
assert calcsize(OFP_EXPERIMENTER_STATS_PACK_STR) == OFP_EXPERIMENTER_STATS_SIZE

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# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation.
# Copyright (C) 2012 Isaku Yamahata <yamahata at valinux co jp>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import collections
import struct
from ofproto_parser import MsgBase, msg_pack_into, msg_str_attr
from . import ofproto_parser
from . import ofproto_v1_2
import logging
LOG = logging.getLogger('ryu.ofproto.ofproto_v1_2_parser')
_MSG_PARSERS = {}
# TODO: clean up the following duplicated code
def _set_msg_type(msg_type):
def _set_cls_msg_type(cls):
cls.cls_msg_type = msg_type
return cls
return _set_cls_msg_type
def _register_parser(cls):
'''class decorator to register msg parser'''
assert cls.cls_msg_type is not None
assert cls.cls_msg_type not in _MSG_PARSERS
_MSG_PARSERS[cls.cls_msg_type] = cls.parser
return cls
@ofproto_parser.register_msg_parser(ofproto_v1_2.OFP_VERSION)
def msg_parser(datapath, version, msg_type, msg_len, xid, buf):
parser = _MSG_PARSERS.get(msg_type)
return parser(datapath, version, msg_type, msg_len, xid, buf)
class OFPPort(collections.namedtuple('OFPPort', (
'port_no', 'hw_addr', 'name', 'config', 'state', 'curr',
'advertised', 'supported', 'peer', 'curr_speed', 'max_speed'))):
@classmethod
def parser(cls, buf, offset):
port = struct.unpack_from(ofproto_v1_2.OFP_PORT_PACK_STR, buf, offset)
return cls(*port)
@_register_parser
@_set_msg_type(ofproto_v1_2.OFPT_HELLO)
class OFPHello(MsgBase):
def __init__(self, datapath):
super(OFPHello, self).__init__(datapath)
@_set_msg_type(ofproto_v1_2.OFPT_FEATURES_REQUEST)
class OFPFeaturesRequest(MsgBase):
def __init__(self, datapath):
super(OFPFeaturesRequest, self).__init__(datapath)
@_register_parser
@_set_msg_type(ofproto_v1_2.OFPT_FEATURES_REPLY)
class OFPSwitchFeatures(MsgBase):
def __init__(self, datapath):
super(OFPSwitchFeatures, self).__init__(datapath)
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPSwitchFeatures, cls).parser(datapath, version, msg_type,
msg_len, xid, buf)
(msg.datapath_id,
msg.n_buffers,
msg.n_tables,
msg.capabilities, reserved) = struct.unpack_from(
ofproto_v1_2.OFP_SWITCH_FEATURES_PACK_STR, msg.buf,
ofproto_v1_2.OFP_HEADER_SIZE)
msg.ports = {}
n_ports = ((msg_len - ofproto_v1_2.OFP_SWITCH_FEATURES_SIZE) /
ofproto_v1_2.OFP_PORT_SIZE)
offset = ofproto_v1_2.OFP_SWITCH_FEATURES_SIZE
for i in range(n_ports):
port = OFPPort.parser(msg.buf, offset)
msg.ports[port.port_no] = port
offset += ofproto_v1_2.OFP_PORT_SIZE
return msg
@_set_msg_type(ofproto_v1_2.OFPT_SET_CONFIG)
class OFPSetConfig(MsgBase):
def __init__(self, datapath, flags=None, miss_send_len=None):
super(OFPSetConfig, self).__init__(datapath)
self.flags = flags
self.miss_send_len = miss_send_len
def _serialize_body(self):
assert self.flags is not None
assert self.miss_send_len is not None
msg_pack_into(ofproto_v1_2.OFP_SWITCH_CONFIG_PACK_STR,
self.buf, ofproto_v1_2.OFP_HEADER_SIZE,
self.flags, self.miss_send_len)