1# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation. 2# Copyright (C) 2012 Isaku Yamahata <yamahata at valinux co jp> 3# 4# Licensed under the Apache License, Version 2.0 (the "License"); 5# you may not use this file except in compliance with the License. 6# You may obtain a copy of the License at 7# 8# http://www.apache.org/licenses/LICENSE-2.0 9# 10# Unless required by applicable law or agreed to in writing, software 11# distributed under the License is distributed on an "AS IS" BASIS, 12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 13# implied. 14# See the License for the specific language governing permissions and 15# limitations under the License. 16 17""" 18OpenFlow 1.3 definitions. 19""" 20 21from ryu.lib import type_desc 22from ryu.ofproto import nicira_ext 23from ryu.ofproto import ofproto_utils 24from ryu.ofproto import oxm_fields 25 26from struct import calcsize 27 28# struct ofp_header 29OFP_HEADER_PACK_STR = '!BBHI' 30OFP_HEADER_SIZE = 8 31assert calcsize(OFP_HEADER_PACK_STR) == OFP_HEADER_SIZE 32 33# enum ofp_type 34OFPT_HELLO = 0 # Symmetric message 35OFPT_ERROR = 1 # Symmetric message 36OFPT_ECHO_REQUEST = 2 # Symmetric message 37OFPT_ECHO_REPLY = 3 # Symmetric message 38OFPT_EXPERIMENTER = 4 # Symmetric message 39 40OFPT_FEATURES_REQUEST = 5 # Controller/switch message 41OFPT_FEATURES_REPLY = 6 # Controller/switch message 42OFPT_GET_CONFIG_REQUEST = 7 # Controller/switch message 43OFPT_GET_CONFIG_REPLY = 8 # Controller/switch message 44OFPT_SET_CONFIG = 9 # Controller/switch message 45 46OFPT_PACKET_IN = 10 # Async message 47OFPT_FLOW_REMOVED = 11 # Async message 48OFPT_PORT_STATUS = 12 # Async message 49 50OFPT_PACKET_OUT = 13 # Controller/switch message 51OFPT_FLOW_MOD = 14 # Controller/switch message 52OFPT_GROUP_MOD = 15 # Controller/switch message 53OFPT_PORT_MOD = 16 # Controller/switch message 54OFPT_TABLE_MOD = 17 # Controller/switch message 55 56OFPT_MULTIPART_REQUEST = 18 # Controller/switch message 57OFPT_MULTIPART_REPLY = 19 # Controller/switch message 58 59OFPT_BARRIER_REQUEST = 20 # Controller/switch message 60OFPT_BARRIER_REPLY = 21 # Controller/switch message 61OFPT_QUEUE_GET_CONFIG_REQUEST = 22 # Controller/switch message 62OFPT_QUEUE_GET_CONFIG_REPLY = 23 # Controller/switch message 63 64OFPT_ROLE_REQUEST = 24 # Controller/switch message 65OFPT_ROLE_REPLY = 25 # Controller/switch message 66 67OFPT_GET_ASYNC_REQUEST = 26 # Controller/switch message 68OFPT_GET_ASYNC_REPLY = 27 # Controller/switch message 69OFPT_SET_ASYNC = 28 # Controller/switch message 70 71OFPT_METER_MOD = 29 # Controller/switch message 72 73# struct ofp_port 74OFP_MAX_PORT_NAME_LEN = 16 75OFP_ETH_ALEN = 6 76OFP_ETH_ALEN_STR = str(OFP_ETH_ALEN) 77_OFP_PORT_PACK_STR = 'I4x' + OFP_ETH_ALEN_STR + 's' + '2x' + \ 78 str(OFP_MAX_PORT_NAME_LEN) + 's' + 'IIIIIIII' 79OFP_PORT_PACK_STR = '!' + _OFP_PORT_PACK_STR 80OFP_PORT_SIZE = 64 81assert calcsize(OFP_PORT_PACK_STR) == OFP_PORT_SIZE 82 83# enum ofp_port_config 84OFPPC_PORT_DOWN = 1 << 0 # Port is administratively down. 85OFPPC_NO_RECV = 1 << 2 # Drop all packets recieved by port. 86OFPPC_NO_FWD = 1 << 5 # Drop packets forwarded to port. 87OFPPC_NO_PACKET_IN = 1 << 6 # Do not send packet-in msgs for port. 88 89# enum ofp_port_state 90OFPPS_LINK_DOWN = 1 << 0 # No physical link present. 91OFPPS_BLOCKED = 1 << 1 # Port is blocked. 92OFPPS_LIVE = 1 << 2 # Live for Fast Failover Group. 93 94# enum ofp_port_no 95OFPP_MAX = 0xffffff00 96OFPP_IN_PORT = 0xfffffff8 # Send the packet out the input port. This 97 # virtual port must be explicitly used 98 # in order to send back out of the input 99 # port. 100OFPP_TABLE = 0xfffffff9 # Perform actions in flow table. 101 # NB: This can only be the destination 102 # port for packet-out messages. 103OFPP_NORMAL = 0xfffffffa # Process with normal L2/L3 switching. 104OFPP_FLOOD = 0xfffffffb # All physical ports except input port and 105 # those disabled by STP. 106OFPP_ALL = 0xfffffffc # All physical ports except input port. 107OFPP_CONTROLLER = 0xfffffffd # Send to controller. 108OFPP_LOCAL = 0xfffffffe # Local openflow "port". 109OFPP_ANY = 0xffffffff # Not associated with a physical port. 110 111# All ones is used to indicate all queues in a port (for stats retrieval). 112OFPQ_ALL = 0xffffffff 113 114# enum ofp_port_features 115OFPPF_10MB_HD = 1 << 0 # 10 Mb half-duplex rate support. 116OFPPF_10MB_FD = 1 << 1 # 10 Mb full-duplex rate support. 117OFPPF_100MB_HD = 1 << 2 # 100 Mb half-duplex rate support. 118OFPPF_100MB_FD = 1 << 3 # 100 Mb full-duplex rate support. 119OFPPF_1GB_HD = 1 << 4 # 1 Gb half-duplex rate support. 120OFPPF_1GB_FD = 1 << 5 # 1 Gb full-duplex rate support. 121OFPPF_10GB_FD = 1 << 6 # 10 Gb full-duplex rate support. 122OFPPF_40GB_FD = 1 << 7 # 40 Gb full-duplex rate support. 123OFPPF_100GB_FD = 1 << 8 # 100 Gb full-duplex rate support. 124OFPPF_1TB_FD = 1 << 9 # 1 Tb full-duplex rate support. 125OFPPF_OTHER = 1 << 10 # Other rate, not in the list. 126OFPPF_COPPER = 1 << 11 # Copper medium. 127OFPPF_FIBER = 1 << 12 # Fiber medium. 128OFPPF_AUTONEG = 1 << 13 # Auto-negotiation. 129OFPPF_PAUSE = 1 << 14 # Pause. 130OFPPF_PAUSE_ASYM = 1 << 15 # Asymmetric pause. 131 132# struct ofp_packet_queue 133OFP_PACKET_QUEUE_PACK_STR = '!IIH6x' 134OFP_PACKET_QUEUE_SIZE = 16 135assert calcsize(OFP_PACKET_QUEUE_PACK_STR) == OFP_PACKET_QUEUE_SIZE 136 137# enum ofp_queue_properties 138OFPQT_MIN_RATE = 1 # Minimum datarate guaranteed. 139OFPQT_MAX_RATE = 2 # Maximum datarate. 140OFPQT_EXPERIMENTER = 0xffff # Experimenter defined property. 141 142# struct ofp_queue_prop_header 143OFP_QUEUE_PROP_HEADER_PACK_STR = '!HH4x' 144OFP_QUEUE_PROP_HEADER_SIZE = 8 145assert calcsize(OFP_QUEUE_PROP_HEADER_PACK_STR) == OFP_QUEUE_PROP_HEADER_SIZE 146 147# struct ofp_queue_prop_min_rate 148OFP_QUEUE_PROP_MIN_RATE_PACK_STR = '!H6x' 149OFP_QUEUE_PROP_MIN_RATE_SIZE = 16 150assert (calcsize(OFP_QUEUE_PROP_MIN_RATE_PACK_STR) + 151 OFP_QUEUE_PROP_HEADER_SIZE) == OFP_QUEUE_PROP_MIN_RATE_SIZE 152 153# struct ofp_queue_prop_max_rate 154OFP_QUEUE_PROP_MAX_RATE_PACK_STR = '!H6x' 155OFP_QUEUE_PROP_MAX_RATE_SIZE = 16 156assert (calcsize(OFP_QUEUE_PROP_MAX_RATE_PACK_STR) + 157 OFP_QUEUE_PROP_HEADER_SIZE) == OFP_QUEUE_PROP_MAX_RATE_SIZE 158 159# struct ofp_queue_prop_experimenter 160OFP_QUEUE_PROP_EXPERIMENTER_PACK_STR = '!I4x' 161OFP_QUEUE_PROP_EXPERIMENTER_SIZE = 16 162assert (calcsize(OFP_QUEUE_PROP_EXPERIMENTER_PACK_STR) + 163 OFP_QUEUE_PROP_HEADER_SIZE) == OFP_QUEUE_PROP_EXPERIMENTER_SIZE 164 165# struct ofp_match 166_OFP_MATCH_PACK_STR = 'HHBBBB' 167OFP_MATCH_PACK_STR = '!' + _OFP_MATCH_PACK_STR 168OFP_MATCH_SIZE = 8 169assert calcsize(OFP_MATCH_PACK_STR) == OFP_MATCH_SIZE 170 171# enum ofp_match_type 172OFPMT_STANDARD = 0 # Deprecated 173OFPMT_OXM = 1 # OpenFlow Extensible Match 174 175# enum ofp_oxm_class 176OFPXMC_NXM_0 = 0x0000 # Backward compatibility with NXM 177OFPXMC_NXM_1 = 0x0001 # Backward compatibility with NXM 178OFPXMC_OPENFLOW_BASIC = 0x8000 # Basic class for OpenFlow 179OFPXMC_EXPERIMENTER = 0xFFFF # Experimenter class 180 181# enum ofp_vlan_id 182OFPVID_PRESENT = 0x1000 # bit that indicate that a VLAN id is set. 183OFPVID_NONE = 0x0000 # No VLAN id was set. 184 185# enum ofp_ipv6exthdr_flags 186OFPIEH_NONEXT = 1 << 0 # "No next header" encountered. 187OFPIEH_ESP = 1 << 1 # Encrypted Sec Payload header present. 188OFPIEH_AUTH = 1 << 2 # Authentication header present. 189OFPIEH_DEST = 1 << 3 # 1 or 2 dest headers present. 190OFPIEH_FRAG = 1 << 4 # Fragment header present. 191OFPIEH_ROUTER = 1 << 5 # Router header present. 192OFPIEH_HOP = 1 << 6 # Hop-by-hop header present. 193OFPIEH_UNREP = 1 << 7 # Unexpected repeats encountered. 194OFPIEH_UNSEQ = 1 << 8 # Unexpected sequencing encountered. 195 196# ofp_oxm_experimenter_header 197OFP_OXM_EXPERIMENTER_HEADER_PACK_STR = '!II' 198OFP_OXM_EXPERIMENTER_HEADER_SIZE = 8 199assert (calcsize(OFP_OXM_EXPERIMENTER_HEADER_PACK_STR) == 200 OFP_OXM_EXPERIMENTER_HEADER_SIZE) 201 202# enum ofp_instruction_type 203OFPIT_GOTO_TABLE = 1 # Setup the next table in the lookup pipeline. 204OFPIT_WRITE_METADATA = 2 # Setup the metadata field for use later in 205 # pipeline. 206OFPIT_WRITE_ACTIONS = 3 # Write the action(s) onto the datapath 207 # action set 208OFPIT_APPLY_ACTIONS = 4 # Applies the action(s) immediately 209OFPIT_CLEAR_ACTIONS = 5 # Clears all actions from the datapath action 210 # set 211OFPIT_METER = 6 # Apply meter (rate limiter) 212OFPIT_EXPERIMENTER = 0xFFFF # Experimenter instruction 213 214# struct ofp_instruction_goto_table 215OFP_INSTRUCTION_GOTO_TABLE_PACK_STR = '!HHB3x' 216OFP_INSTRUCTION_GOTO_TABLE_SIZE = 8 217assert (calcsize(OFP_INSTRUCTION_GOTO_TABLE_PACK_STR) == 218 OFP_INSTRUCTION_GOTO_TABLE_SIZE) 219 220# struct ofp_instruction_write_metadata 221OFP_INSTRUCTION_WRITE_METADATA_PACK_STR = '!HH4xQQ' 222OFP_INSTRUCTION_WRITE_METADATA_SIZE = 24 223assert (calcsize(OFP_INSTRUCTION_WRITE_METADATA_PACK_STR) == 224 OFP_INSTRUCTION_WRITE_METADATA_SIZE) 225 226# struct ofp_instruction_actions 227OFP_INSTRUCTION_ACTIONS_PACK_STR = '!HH4x' 228OFP_INSTRUCTION_ACTIONS_SIZE = 8 229assert (calcsize(OFP_INSTRUCTION_ACTIONS_PACK_STR) == 230 OFP_INSTRUCTION_ACTIONS_SIZE) 231 232# struct ofp_instruction_meter 233OFP_INSTRUCTION_METER_PACK_STR = '!HHI' 234OFP_INSTRUCTION_METER_SIZE = 8 235assert calcsize(OFP_INSTRUCTION_METER_PACK_STR) == OFP_INSTRUCTION_METER_SIZE 236 237# enum ofp_action_type 238OFPAT_OUTPUT = 0 # Output to switch port. 239OFPAT_COPY_TTL_OUT = 11 # Copy TTL "outwards" -- from 240 # next-to-outermost to outermost 241OFPAT_COPY_TTL_IN = 12 # Copy TTL "inwards" -- from outermost to 242 # next-to-outermost 243OFPAT_SET_MPLS_TTL = 15 # MPLS TTL. 244OFPAT_DEC_MPLS_TTL = 16 # Decrement MPLS TTL 245OFPAT_PUSH_VLAN = 17 # Push a new VLAN tag 246OFPAT_POP_VLAN = 18 # Pop the outer VLAN tag 247OFPAT_PUSH_MPLS = 19 # Push a new MPLS tag 248OFPAT_POP_MPLS = 20 # Pop the outer MPLS tag 249OFPAT_SET_QUEUE = 21 # Set queue id when outputting to a port 250OFPAT_GROUP = 22 # Apply group 251OFPAT_SET_NW_TTL = 23 # IP TTL. 252OFPAT_DEC_NW_TTL = 24 # Decrement IP TTL. 253OFPAT_SET_FIELD = 25 # Set a header field using OXM TLV format. 254OFPAT_PUSH_PBB = 26 # Push a new PBB service tag (I-TAG) 255OFPAT_POP_PBB = 27 # Pop the outer PBB service tag (I-TAG) 256OFPAT_EXPERIMENTER = 0xffff 257 258# struct ofp_action_header 259OFP_ACTION_HEADER_PACK_STR = '!HH4x' 260OFP_ACTION_HEADER_SIZE = 8 261assert calcsize(OFP_ACTION_HEADER_PACK_STR) == OFP_ACTION_HEADER_SIZE 262 263# struct ofp_action_output 264OFP_ACTION_OUTPUT_PACK_STR = '!HHIH6x' 265OFP_ACTION_OUTPUT_SIZE = 16 266assert calcsize(OFP_ACTION_OUTPUT_PACK_STR) == OFP_ACTION_OUTPUT_SIZE 267 268# enum ofp_controller_max_len 269OFPCML_MAX = 0xffe5 # maximum max_len value which can be used to 270 # request a specific byte length. 271OFPCML_NO_BUFFER = 0xffff # indicates that no buffering should be 272 # applied and the whole packet is to be 273 # sent to the controller. 274 275# struct ofp_action_group 276OFP_ACTION_GROUP_PACK_STR = '!HHI' 277OFP_ACTION_GROUP_SIZE = 8 278assert calcsize(OFP_ACTION_GROUP_PACK_STR) == OFP_ACTION_GROUP_SIZE 279 280# struct ofp_action_set_queue 281OFP_ACTION_SET_QUEUE_PACK_STR = '!HHI' 282OFP_ACTION_SET_QUEUE_SIZE = 8 283assert calcsize(OFP_ACTION_SET_QUEUE_PACK_STR) == OFP_ACTION_SET_QUEUE_SIZE 284 285# struct ofp_action_mpls_ttl 286OFP_ACTION_MPLS_TTL_PACK_STR = '!HHB3x' 287OFP_ACTION_MPLS_TTL_SIZE = 8 288assert calcsize(OFP_ACTION_MPLS_TTL_PACK_STR) == OFP_ACTION_MPLS_TTL_SIZE 289 290# struct ofp_action_nw_ttl 291OFP_ACTION_NW_TTL_PACK_STR = '!HHB3x' 292OFP_ACTION_NW_TTL_SIZE = 8 293assert calcsize(OFP_ACTION_NW_TTL_PACK_STR) == OFP_ACTION_NW_TTL_SIZE 294 295# struct ofp_action_push 296OFP_ACTION_PUSH_PACK_STR = '!HHH2x' 297OFP_ACTION_PUSH_SIZE = 8 298assert calcsize(OFP_ACTION_PUSH_PACK_STR) == OFP_ACTION_PUSH_SIZE 299 300# struct ofp_action_pop_mpls 301OFP_ACTION_POP_MPLS_PACK_STR = '!HHH2x' 302OFP_ACTION_POP_MPLS_SIZE = 8 303assert calcsize(OFP_ACTION_POP_MPLS_PACK_STR) == OFP_ACTION_POP_MPLS_SIZE 304 305# struct ofp_action_set_field 306OFP_ACTION_SET_FIELD_PACK_STR = '!HH4x' 307OFP_ACTION_SET_FIELD_SIZE = 8 308assert calcsize(OFP_ACTION_SET_FIELD_PACK_STR) == OFP_ACTION_SET_FIELD_SIZE 309 310# struct ofp_action_experimenter_header 311OFP_ACTION_EXPERIMENTER_HEADER_PACK_STR = '!HHI' 312OFP_ACTION_EXPERIMENTER_HEADER_SIZE = 8 313assert (calcsize(OFP_ACTION_EXPERIMENTER_HEADER_PACK_STR) == 314 OFP_ACTION_EXPERIMENTER_HEADER_SIZE) 315 316# ofp_switch_features 317OFP_SWITCH_FEATURES_PACK_STR = '!QIBB2xII' 318OFP_SWITCH_FEATURES_SIZE = 32 319assert (calcsize(OFP_SWITCH_FEATURES_PACK_STR) + OFP_HEADER_SIZE == 320 OFP_SWITCH_FEATURES_SIZE) 321 322# enum ofp_capabilities 323OFPC_FLOW_STATS = 1 << 0 # Flow statistics. 324OFPC_TABLE_STATS = 1 << 1 # Table statistics. 325OFPC_PORT_STATS = 1 << 2 # Port statistics. 326OFPC_GROUP_STATS = 1 << 3 # Group statistics. 327OFPC_IP_REASM = 1 << 5 # Can reassemble IP fragments. 328OFPC_QUEUE_STATS = 1 << 6 # Queue statistics. 329OFPC_PORT_BLOCKED = 1 << 8 # Switch will block looping ports. 330 331# struct ofp_switch_config 332OFP_SWITCH_CONFIG_PACK_STR = '!HH' 333OFP_SWITCH_CONFIG_SIZE = 12 334assert (calcsize(OFP_SWITCH_CONFIG_PACK_STR) + OFP_HEADER_SIZE == 335 OFP_SWITCH_CONFIG_SIZE) 336 337# enum ofp_config_flags 338OFPC_FRAG_NORMAL = 0 # No special handling for fragments. 339OFPC_FRAG_DROP = 1 # Drop fragments. 340OFPC_FRAG_REASM = 2 # Reassemble (only if OFPC_IP_REASM set). 341OFPC_FRAG_MASK = 3 342 343# enum ofp_table 344OFPTT_MAX = 0xfe 345OFPTT_ALL = 0xff 346 347# struct ofp_table_mod 348OFP_TABLE_MOD_PACK_STR = '!B3xI' 349OFP_TABLE_MOD_SIZE = 16 350assert (calcsize(OFP_TABLE_MOD_PACK_STR) + OFP_HEADER_SIZE == 351 OFP_TABLE_MOD_SIZE) 352 353_OFP_FLOW_MOD_PACK_STR0 = 'QQBBHHHIIIH2x' 354OFP_FLOW_MOD_PACK_STR = '!' + _OFP_FLOW_MOD_PACK_STR0 + _OFP_MATCH_PACK_STR 355OFP_FLOW_MOD_PACK_STR0 = '!' + _OFP_FLOW_MOD_PACK_STR0 356OFP_FLOW_MOD_SIZE = 56 357assert (calcsize(OFP_FLOW_MOD_PACK_STR) + OFP_HEADER_SIZE == 358 OFP_FLOW_MOD_SIZE) 359 360# enum ofp_flow_mod_command 361OFPFC_ADD = 0 # New flow. 362OFPFC_MODIFY = 1 # Modify all matching flows. 363OFPFC_MODIFY_STRICT = 2 # Modify entry strictly matching wildcards 364OFPFC_DELETE = 3 # Delete all matching flows. 365OFPFC_DELETE_STRICT = 4 # Strictly match wildcards and priority. 366 367# By default, choose a priority in the middle. 368OFP_DEFAULT_PRIORITY = 0x8000 369 370# enum ofp_flow_mod_flags 371OFPFF_SEND_FLOW_REM = 1 << 0 # Send flow removed message when flow 372 # expires or is deleted. 373OFPFF_CHECK_OVERLAP = 1 << 1 # Check for overlapping entries first. 374OFPFF_RESET_COUNTS = 1 << 2 # Reset flow packet and byte counts. 375OFPFF_NO_PKT_COUNTS = 1 << 3 # Don't keep track of packet count. 376OFPFF_NO_BYT_COUNTS = 1 << 4 # Don't keep track of byte count. 377 378# struct ofp_group_mod 379OFP_GROUP_MOD_PACK_STR = '!HBxI' 380OFP_GROUP_MOD_SIZE = 16 381assert (calcsize(OFP_GROUP_MOD_PACK_STR) + OFP_HEADER_SIZE == 382 OFP_GROUP_MOD_SIZE) 383 384# enum ofp_group_mod_command 385OFPGC_ADD = 0 # New group. 386OFPGC_MODIFY = 1 # Modify all matching groups. 387OFPGC_DELETE = 2 # Delete all matching groups. 388 389# enum ofp_group 390OFPG_MAX = 0xffffff00 # Last usable group number. 391# Fake groups 392OFPG_ALL = 0xfffffffc # Represents all groups for group delete commands. 393OFPG_ANY = 0xffffffff # Wildcard group used only for flow stats requests. 394 # Selects all flows regardless of group 395 # (including flows with no group). 396 397# enum ofp_group_type 398OFPGT_ALL = 0 # All (multicast/broadcast) group. 399OFPGT_SELECT = 1 # Select group. 400OFPGT_INDIRECT = 2 # Indirect group. 401OFPGT_FF = 3 # Fast failover group. 402 403# struct ofp_bucket 404OFP_BUCKET_PACK_STR = '!HHII4x' 405OFP_BUCKET_SIZE = 16 406assert calcsize(OFP_BUCKET_PACK_STR) == OFP_BUCKET_SIZE 407 408# struct ofp_port_mod 409OFP_PORT_MOD_PACK_STR = '!I4x' + OFP_ETH_ALEN_STR + 's2xIII4x' 410OFP_PORT_MOD_SIZE = 40 411assert (calcsize(OFP_PORT_MOD_PACK_STR) + OFP_HEADER_SIZE == 412 OFP_PORT_MOD_SIZE) 413 414# struct ofp_meter_mod 415OFP_METER_MOD_PACK_STR = '!HHI' 416OFP_METER_MOD_SIZE = 16 417assert (calcsize(OFP_METER_MOD_PACK_STR) + OFP_HEADER_SIZE == 418 OFP_METER_MOD_SIZE) 419 420# enum ofp_meter 421OFPM_MAX = 0xffff0000 422OFPM_SLOWPATH = 0xfffffffd # Meter for slow datapath, if any. 423OFPM_CONTROLLER = 0xfffffffe # Meter for controller connection. 424OFPM_ALL = 0xffffffff # Represents all meters for stat requests 425 # commands. 426 427# enum ofp_meter_mod_command 428OFPMC_ADD = 0 # New meter. 429OFPMC_MODIFY = 1 # Modify specified meter. 430OFPMC_DELETE = 2 # Delete specified meter. 431 432# enum ofp_meter_flags 433OFPMF_KBPS = 1 << 0 # Rate value in kb/s (kilo-bit per second). 434OFPMF_PKTPS = 1 << 1 # Rate value in packet/sec. 435OFPMF_BURST = 1 << 2 # Do burst size. 436OFPMF_STATS = 1 << 3 # Collect statistics. 437 438# struct ofp_meter_band_header 439OFP_METER_BAND_HEADER_PACK_STR = '!HHII' 440OFP_METER_BAND_HEADER_SIZE = 12 441assert (calcsize(OFP_METER_BAND_HEADER_PACK_STR) == 442 OFP_METER_BAND_HEADER_SIZE) 443 444# enum ofp_meter_band_type 445OFPMBT_DROP = 1 # Drop packet. 446OFPMBT_DSCP_REMARK = 2 # Remark DSCP in the IP header. 447OFPMBT_EXPERIMENTER = 0xFFFF # Experimenter meter band. 448 449# struct ofp_meter_band_drop 450OFP_METER_BAND_DROP_PACK_STR = '!HHII4x' 451OFP_METER_BAND_DROP_SIZE = 16 452assert (calcsize(OFP_METER_BAND_DROP_PACK_STR) == 453 OFP_METER_BAND_DROP_SIZE) 454 455# struct ofp_meter_band_dscp_remark 456OFP_METER_BAND_DSCP_REMARK_PACK_STR = '!HHIIB3x' 457OFP_METER_BAND_DSCP_REMARK_SIZE = 16 458assert (calcsize(OFP_METER_BAND_DSCP_REMARK_PACK_STR) == 459 OFP_METER_BAND_DSCP_REMARK_SIZE) 460 461# struct ofp_meter_band_experimenter 462OFP_METER_BAND_EXPERIMENTER_PACK_STR = '!HHIII' 463OFP_METER_BAND_EXPERIMENTER_SIZE = 16 464assert (calcsize(OFP_METER_BAND_EXPERIMENTER_PACK_STR) == 465 OFP_METER_BAND_EXPERIMENTER_SIZE) 466 467# struct ofp_multipart_request 468OFP_MULTIPART_REQUEST_PACK_STR = '!HH4x' 469OFP_MULTIPART_REQUEST_SIZE = 16 470assert (calcsize(OFP_MULTIPART_REQUEST_PACK_STR) + OFP_HEADER_SIZE == 471 OFP_MULTIPART_REQUEST_SIZE) 472 473# enum ofp_multipart_request_flags 474OFPMPF_REQ_MORE = 1 << 0 # More requests to follow. 475 476# struct ofp_multipart_reply 477OFP_MULTIPART_REPLY_PACK_STR = '!HH4x' 478OFP_MULTIPART_REPLY_SIZE = 16 479assert (calcsize(OFP_MULTIPART_REPLY_PACK_STR) + OFP_HEADER_SIZE == 480 OFP_MULTIPART_REPLY_SIZE) 481 482# enum ofp_multipart_reply_flags 483OFPMPF_REPLY_MORE = 1 << 0 # More replies to follow. 484 485# enum ofp_multipart_types 486OFPMP_DESC = 0 487OFPMP_FLOW = 1 488OFPMP_AGGREGATE = 2 489OFPMP_TABLE = 3 490OFPMP_PORT_STATS = 4 491OFPMP_QUEUE = 5 492OFPMP_GROUP = 6 493OFPMP_GROUP_DESC = 7 494OFPMP_GROUP_FEATURES = 8 495OFPMP_METER = 9 496OFPMP_METER_CONFIG = 10 497OFPMP_METER_FEATURES = 11 498OFPMP_TABLE_FEATURES = 12 499OFPMP_PORT_DESC = 13 500OFPMP_EXPERIMENTER = 0xffff 501 502# struct ofp_desc 503DESC_STR_LEN = 256 504DESC_STR_LEN_STR = str(DESC_STR_LEN) 505SERIAL_NUM_LEN = 32 506SERIAL_NUM_LEN_STR = str(SERIAL_NUM_LEN) 507OFP_DESC_PACK_STR = '!' + \ 508 DESC_STR_LEN_STR + 's' + \ 509 DESC_STR_LEN_STR + 's' + \ 510 DESC_STR_LEN_STR + 's' + \ 511 SERIAL_NUM_LEN_STR + 's' + \ 512 DESC_STR_LEN_STR + 's' 513OFP_DESC_SIZE = 1056 514assert calcsize(OFP_DESC_PACK_STR) == OFP_DESC_SIZE 515 516 517# struct ofp_flow_stats_request 518_OFP_FLOW_STATS_REQUEST_0_PACK_STR = 'B3xII4xQQ' 519OFP_FLOW_STATS_REQUEST_0_PACK_STR = '!' + _OFP_FLOW_STATS_REQUEST_0_PACK_STR 520OFP_FLOW_STATS_REQUEST_0_SIZE = 32 521assert (calcsize(OFP_FLOW_STATS_REQUEST_0_PACK_STR) == 522 OFP_FLOW_STATS_REQUEST_0_SIZE) 523OFP_FLOW_STATS_REQUEST_PACK_STR = (OFP_FLOW_STATS_REQUEST_0_PACK_STR + 524 _OFP_MATCH_PACK_STR) 525OFP_FLOW_STATS_REQUEST_SIZE = 40 526assert (calcsize(OFP_FLOW_STATS_REQUEST_PACK_STR) == 527 OFP_FLOW_STATS_REQUEST_SIZE) 528 529# struct ofp_flow_stats 530_OFP_FLOW_STATS_0_PACK_STR = 'HBxIIHHHH4xQQQ' 531OFP_FLOW_STATS_0_PACK_STR = '!' + _OFP_FLOW_STATS_0_PACK_STR 532OFP_FLOW_STATS_0_SIZE = 48 533assert calcsize(OFP_FLOW_STATS_0_PACK_STR) == OFP_FLOW_STATS_0_SIZE 534OFP_FLOW_STATS_PACK_STR = (OFP_FLOW_STATS_0_PACK_STR + 535 _OFP_MATCH_PACK_STR) 536OFP_FLOW_STATS_SIZE = 56 537assert calcsize(OFP_FLOW_STATS_PACK_STR) == OFP_FLOW_STATS_SIZE 538 539# struct ofp_flow_stats_request 540_OFP_AGGREGATE_STATS_REQUEST_0_PACK_STR = 'B3xII4xQQ' 541OFP_AGGREGATE_STATS_REQUEST_0_PACK_STR = '!' + \ 542 _OFP_AGGREGATE_STATS_REQUEST_0_PACK_STR 543OFP_AGGREGATE_STATS_REQUEST_0_SIZE = 32 544assert (calcsize(OFP_AGGREGATE_STATS_REQUEST_0_PACK_STR) == 545 OFP_AGGREGATE_STATS_REQUEST_0_SIZE) 546OFP_AGGREGATE_STATS_REQUEST_PACK_STR = \ 547 OFP_AGGREGATE_STATS_REQUEST_0_PACK_STR + _OFP_MATCH_PACK_STR 548OFP_AGGREGATE_STATS_REQUEST_SIZE = 40 549assert (calcsize(OFP_AGGREGATE_STATS_REQUEST_PACK_STR) == 550 OFP_AGGREGATE_STATS_REQUEST_SIZE) 551 552# struct ofp_aggregate_stats_request 553OFP_AGGREGATE_STATS_REQUEST_PACK_STR = '!B3xII4xQQ' + _OFP_MATCH_PACK_STR 554OFP_AGGREGATE_STATS_REQUEST_SIZE = 40 555assert (calcsize(OFP_AGGREGATE_STATS_REQUEST_PACK_STR) == 556 OFP_AGGREGATE_STATS_REQUEST_SIZE) 557 558# struct ofp_aggregate_stats_reply 559OFP_AGGREGATE_STATS_REPLY_PACK_STR = '!QQI4x' 560OFP_AGGREGATE_STATS_REPLY_SIZE = 24 561assert (calcsize(OFP_AGGREGATE_STATS_REPLY_PACK_STR) == 562 OFP_AGGREGATE_STATS_REPLY_SIZE) 563 564# struct ofp_table_stats 565OFP_TABLE_STATS_PACK_STR = '!B3xIQQ' 566OFP_TABLE_STATS_SIZE = 24 567assert calcsize(OFP_TABLE_STATS_PACK_STR) == OFP_TABLE_STATS_SIZE 568 569# struct ofp_table_features 570OFP_MAX_TABLE_NAME_LEN = 32 571OFP_MAX_TABLE_NAME_LEN_STR = str(OFP_MAX_TABLE_NAME_LEN) 572OFP_TABLE_FEATURES_PACK_STR = '!HB5x' + OFP_MAX_TABLE_NAME_LEN_STR + \ 573 's' + 'QQII' 574OFP_TABLE_FEATURES_SIZE = 64 575assert (calcsize(OFP_TABLE_FEATURES_PACK_STR) == 576 OFP_TABLE_FEATURES_SIZE) 577 578# enum ofp_table_feature_prop_type 579OFPTFPT_INSTRUCTIONS = 0 580OFPTFPT_INSTRUCTIONS_MISS = 1 581OFPTFPT_NEXT_TABLES = 2 582OFPTFPT_NEXT_TABLES_MISS = 3 583OFPTFPT_WRITE_ACTIONS = 4 584OFPTFPT_WRITE_ACTIONS_MISS = 5 585OFPTFPT_APPLY_ACTIONS = 6 586OFPTFPT_APPLY_ACTIONS_MISS = 7 587OFPTFPT_MATCH = 8 588OFPTFPT_WILDCARDS = 10 589OFPTFPT_WRITE_SETFIELD = 12 590OFPTFPT_WRITE_SETFIELD_MISS = 13 591OFPTFPT_APPLY_SETFIELD = 14 592OFPTFPT_APPLY_SETFIELD_MISS = 15 593OFPTFPT_EXPERIMENTER = 0xFFFE 594OFPTFPT_EXPERIMENTER_MISS = 0xFFFF 595 596# struct ofp_table_feature_prop_instructions 597OFP_TABLE_FEATURE_PROP_INSTRUCTIONS_PACK_STR = '!HH' 598OFP_TABLE_FEATURE_PROP_INSTRUCTIONS_SIZE = 4 599assert (calcsize(OFP_TABLE_FEATURE_PROP_INSTRUCTIONS_PACK_STR) == 600 OFP_TABLE_FEATURE_PROP_INSTRUCTIONS_SIZE) 601 602# struct ofp_table_feature_prop_next_tables 603OFP_TABLE_FEATURE_PROP_NEXT_TABLES_PACK_STR = '!HH' 604OFP_TABLE_FEATURE_PROP_NEXT_TABLES_SIZE = 4 605assert (calcsize(OFP_TABLE_FEATURE_PROP_NEXT_TABLES_PACK_STR) == 606 OFP_TABLE_FEATURE_PROP_NEXT_TABLES_SIZE) 607 608# struct ofp_table_feature_prop_actions 609OFP_TABLE_FEATURE_PROP_ACTIONS_PACK_STR = '!HH' 610OFP_TABLE_FEATURE_PROP_ACTIONS_SIZE = 4 611assert (calcsize(OFP_TABLE_FEATURE_PROP_ACTIONS_PACK_STR) == 612 OFP_TABLE_FEATURE_PROP_ACTIONS_SIZE) 613 614# struct ofp_table_feature_prop_oxm 615OFP_TABLE_FEATURE_PROP_OXM_PACK_STR = '!HH' 616OFP_TABLE_FEATURE_PROP_OXM_SIZE = 4 617assert (calcsize(OFP_TABLE_FEATURE_PROP_OXM_PACK_STR) == 618 OFP_TABLE_FEATURE_PROP_OXM_SIZE) 619 620# struct ofp_port_stats_request 621OFP_PORT_STATS_REQUEST_PACK_STR = '!I4x' 622OFP_PORT_STATS_REQUEST_SIZE = 8 623assert (calcsize(OFP_PORT_STATS_REQUEST_PACK_STR) == 624 OFP_PORT_STATS_REQUEST_SIZE) 625 626# struct ofp_port_stats 627OFP_PORT_STATS_PACK_STR = '!I4xQQQQQQQQQQQQII' 628OFP_PORT_STATS_SIZE = 112 629assert calcsize(OFP_PORT_STATS_PACK_STR) == OFP_PORT_STATS_SIZE 630 631# struct ofp_queue_stats_request 632OFP_QUEUE_STATS_REQUEST_PACK_STR = '!II' 633OFP_QUEUE_STATS_REQUEST_SIZE = 8 634assert (calcsize(OFP_QUEUE_STATS_REQUEST_PACK_STR) == 635 OFP_QUEUE_STATS_REQUEST_SIZE) 636 637# struct ofp_queue_stats 638OFP_QUEUE_STATS_PACK_STR = '!IIQQQII' 639OFP_QUEUE_STATS_SIZE = 40 640assert calcsize(OFP_QUEUE_STATS_PACK_STR) == OFP_QUEUE_STATS_SIZE 641 642# struct ofp_group_stats_request 643OFP_GROUP_STATS_REQUEST_PACK_STR = '!I4x' 644OFP_GROUP_STATS_REQUEST_SIZE = 8 645assert (calcsize(OFP_GROUP_STATS_REQUEST_PACK_STR) == 646 OFP_GROUP_STATS_REQUEST_SIZE) 647 648# struct ofp_group_stats 649OFP_GROUP_STATS_PACK_STR = '!H2xII4xQQII' 650OFP_GROUP_STATS_SIZE = 40 651assert calcsize(OFP_GROUP_STATS_PACK_STR) == OFP_GROUP_STATS_SIZE 652 653# struct ofp_bucket_counter 654OFP_BUCKET_COUNTER_PACK_STR = '!QQ' 655OFP_BUCKET_COUNTER_SIZE = 16 656assert calcsize(OFP_BUCKET_COUNTER_PACK_STR) == OFP_BUCKET_COUNTER_SIZE 657 658# struct ofp_group_desc 659OFP_GROUP_DESC_PACK_STR = '!HBxI' 660OFP_GROUP_DESC_SIZE = 8 661assert calcsize(OFP_GROUP_DESC_PACK_STR) == OFP_GROUP_DESC_SIZE 662 663# struct ofp_group_desc_stats 664OFP_GROUP_DESC_STATS_PACK_STR = OFP_GROUP_DESC_PACK_STR 665OFP_GROUP_DESC_STATS_SIZE = OFP_GROUP_DESC_SIZE 666assert calcsize(OFP_GROUP_DESC_STATS_PACK_STR) == OFP_GROUP_DESC_STATS_SIZE 667 668# struct ofp_group_features 669OFP_GROUP_FEATURES_PACK_STR = '!II4I4I' 670OFP_GROUP_FEATURES_SIZE = 40 671assert calcsize(OFP_GROUP_FEATURES_PACK_STR) == OFP_GROUP_FEATURES_SIZE 672 673# enum ofp_group_capabilities 674OFPGFC_SELECT_WEIGHT = 1 << 0 # Support weight for select groups. 675OFPGFC_SELECT_LIVENESS = 1 << 1 # Support liveness for select groups. 676OFPGFC_CHAINING = 1 << 2 # Support chaining groups. 677OFPGFC_CHAINING_CHECKS = 1 << 3 # Check chaining for loops and delete 678 679# struct ofp_meter_multipart_request 680OFP_METER_MULTIPART_REQUEST_PACK_STR = '!I4x' 681OFP_METER_MULTIPART_REQUEST_SIZE = 8 682assert (calcsize(OFP_METER_MULTIPART_REQUEST_PACK_STR) == 683 OFP_METER_MULTIPART_REQUEST_SIZE) 684 685# struct ofp_meter_stats 686OFP_METER_STATS_PACK_STR = '!IH6xIQQII' 687OFP_METER_STATS_SIZE = 40 688assert calcsize(OFP_METER_STATS_PACK_STR) == OFP_METER_STATS_SIZE 689 690# struct ofp_meter_band_stats 691OFP_METER_BAND_STATS_PACK_STR = '!QQ' 692OFP_METER_BAND_STATS_SIZE = 16 693assert (calcsize(OFP_METER_BAND_STATS_PACK_STR) == 694 OFP_METER_BAND_STATS_SIZE) 695 696# struct ofp_meter_config 697OFP_METER_CONFIG_PACK_STR = '!HHI' 698OFP_METER_CONFIG_SIZE = 8 699assert calcsize(OFP_METER_CONFIG_PACK_STR) == OFP_METER_CONFIG_SIZE 700 701# struct ofp_meter_features 702OFP_METER_FEATURES_PACK_STR = '!IIIBB2x' 703OFP_METER_FEATURES_SIZE = 16 704assert (calcsize(OFP_METER_FEATURES_PACK_STR) == 705 OFP_METER_FEATURES_SIZE) 706 707# struct ofp_experimenter_multipart_header 708OFP_EXPERIMENTER_MULTIPART_HEADER_PACK_STR = '!II' 709OFP_EXPERIMENTER_MULTIPART_HEADER_SIZE = 8 710assert (calcsize(OFP_EXPERIMENTER_MULTIPART_HEADER_PACK_STR) == 711 OFP_EXPERIMENTER_MULTIPART_HEADER_SIZE) 712 713# struct ofp_queue_get_config_request 714OFP_QUEUE_GET_CONFIG_REQUEST_PACK_STR = '!I4x' 715OFP_QUEUE_GET_CONFIG_REQUEST_SIZE = 16 716assert (calcsize(OFP_QUEUE_GET_CONFIG_REQUEST_PACK_STR) + 717 OFP_HEADER_SIZE) == OFP_QUEUE_GET_CONFIG_REQUEST_SIZE 718 719# struct ofp_queue_get_config_reply 720OFP_QUEUE_GET_CONFIG_REPLY_PACK_STR = '!I4x' 721OFP_QUEUE_GET_CONFIG_REPLY_SIZE = 16 722assert (calcsize(OFP_QUEUE_GET_CONFIG_REPLY_PACK_STR) + 723 OFP_HEADER_SIZE) == OFP_QUEUE_GET_CONFIG_REPLY_SIZE 724 725# struct ofp_packet_out 726OFP_PACKET_OUT_PACK_STR = '!IIH6x' 727OFP_PACKET_OUT_SIZE = 24 728assert (calcsize(OFP_PACKET_OUT_PACK_STR) + OFP_HEADER_SIZE == 729 OFP_PACKET_OUT_SIZE) 730 731# struct ofp_role_request 732OFP_ROLE_REQUEST_PACK_STR = '!I4xQ' 733OFP_ROLE_REQUEST_SIZE = 24 734assert (calcsize(OFP_ROLE_REQUEST_PACK_STR) + OFP_HEADER_SIZE == 735 OFP_ROLE_REQUEST_SIZE) 736 737# enum ofp_controller_role 738OFPCR_ROLE_NOCHANGE = 0 # Don't change current role. 739OFPCR_ROLE_EQUAL = 1 # Default role, full access. 740OFPCR_ROLE_MASTER = 2 # Full access, at most one master. 741OFPCR_ROLE_SLAVE = 3 # Read-only access. 742 743# struct ofp_async_config 744OFP_ASYNC_CONFIG_PACK_STR = '!2I2I2I' 745OFP_ASYNC_CONFIG_SIZE = 32 746assert (calcsize(OFP_ASYNC_CONFIG_PACK_STR) + OFP_HEADER_SIZE == 747 OFP_ASYNC_CONFIG_SIZE) 748 749# struct ofp_packet_in 750OFP_PACKET_IN_PACK_STR = '!IHBBQ' 751OFP_PACKET_IN_SIZE = 32 752assert (calcsize(OFP_PACKET_IN_PACK_STR) + OFP_MATCH_SIZE + OFP_HEADER_SIZE == 753 OFP_PACKET_IN_SIZE) 754 755# enum ofp_packet_in_reason 756OFPR_NO_MATCH = 0 # No matching flow. 757OFPR_ACTION = 1 # Action explicitly output to controller. 758OFPR_INVALID_TTL = 2 # Packet has invalid TTL. 759 760# struct ofp_flow_removed 761_OFP_FLOW_REMOVED_PACK_STR0 = 'QHBBIIHHQQ' 762OFP_FLOW_REMOVED_PACK_STR = '!' + _OFP_FLOW_REMOVED_PACK_STR0 + \ 763 _OFP_MATCH_PACK_STR 764OFP_FLOW_REMOVED_PACK_STR0 = '!' + _OFP_FLOW_REMOVED_PACK_STR0 765OFP_FLOW_REMOVED_SIZE = 56 766assert (calcsize(OFP_FLOW_REMOVED_PACK_STR) + OFP_HEADER_SIZE == 767 OFP_FLOW_REMOVED_SIZE) 768 769# enum ofp_flow_removed_reason 770OFPRR_IDLE_TIMEOUT = 0 # Flow idle time exceeded idle_timeout. 771OFPRR_HARD_TIMEOUT = 1 # Time exceeded hard_timeout. 772OFPRR_DELETE = 2 # Evicted by a DELETE flow mod. 773OFPRR_GROUP_DELETE = 3 # Group was removed. 774 775# struct ofp_port_status 776OFP_PORT_STATUS_PACK_STR = '!B7x' + _OFP_PORT_PACK_STR 777OFP_PORT_STATUS_DESC_OFFSET = OFP_HEADER_SIZE + 8 778OFP_PORT_STATUS_SIZE = 80 779assert (calcsize(OFP_PORT_STATUS_PACK_STR) + OFP_HEADER_SIZE == 780 OFP_PORT_STATUS_SIZE) 781 782# enum ofp_port_reason 783OFPPR_ADD = 0 # The port was added. 784OFPPR_DELETE = 1 # The port was removed. 785OFPPR_MODIFY = 2 # Some attribute of the port has changed. 786 787# OFPMP_EXPERIMENTER 788# struct onf_experimenter_multipart_msg 789# (experimenter == ONF_EXPERIMENTER_ID) 790ONFMP_FLOW_MONITOR = 1870 791 792# EXT-187 seems to have a lot of flaws. 793# XXX the spec mentions ONFST_FLOW_MONITOR in some places. 794# we assume it's same as ONFMP_FLOW_MONITOR. 795# XXX the spec uses OFPP_NONE. we assume it means OFPP_ANY. 796# XXX onf_flow_update_full.length is commented to be 24. 797# but it needs to tell the actual length of instructions. 798# we assume it's variable. 799# XXX the spec seems confused between instructions and actions 800# for onf_flow_update_full/ONFFMF_ACTIONS. we assume they all 801# are instructions. 802# XXX the spec does not define payload structures for any of 803# ONFT_FLOW_MONITOR_CANCEL, ONFT_FLOW_MONITOR_PAUSED, or 804# ONFT_FLOW_MONITOR_RESUMED. we assume they are same as NX. 805# according to NX spec (OVS nicira-ext.h and ofp-msg.h): 806# NXT_FLOW_MONITOR_CANCEL: a single u32 'id'. 807# NXT_FLOW_MONITOR_PAUSED/RESUMED: empty payload 808# (OF1.4 uses something different; OFPFMC_DELETE for CANCEL and 809# OFPFME_ for PAUSED/RESUMED.) 810# XXX onf_flow_monitor_request and onf_flow_update_full use 811# match_len + oxm_fields instead of ofp_match. this pointless 812# diverge from OF1.4 looks like a botch when updating from OF1.0. 813# XXX the spec mentions "the current implementation of Open vSwitch" 814# but, as of writing this, it doesn't have this extension implemented 815# at all. we assume that it is about OF1.0 NX. 816# XXX the spec mentions nx13_flow_monitor_request but i couldn't find 817# it in OVS nicira-ext.h. 818 819# onf_flow_monitor_request 820# ONFMP_FLOW_MONITOR request's body is zero or more instances of this. 821# id, flags, match_len, out_put, table_id, zeros[3] 822ONF_FLOW_MONITOR_REQUEST_PACK_STR = '!IHHIB3x' 823ONF_FLOW_MONITOR_REQUEST_SIZE = 16 824assert (calcsize(ONF_FLOW_MONITOR_REQUEST_PACK_STR) == 825 ONF_FLOW_MONITOR_REQUEST_SIZE) 826 827# onf_flow_monitor_request.flags 828ONFFMF_INITIAL = 1 << 0 829ONFFMF_ADD = 1 << 1 830ONFFMF_DELETE = 1 << 2 831ONFFMF_MODIFY = 1 << 3 832ONFFMF_ACTIONS = 1 << 4 833ONFFMF_OWN = 1 << 5 834 835# onf_flow_update_header 836# ONFMP_FLOW_MONITOR request's body is an array of this 837# length, event 838ONF_FLOW_UPDATE_HEADER_PACK_STR = '!HH' 839ONF_FLOW_UPDATE_HEADER_SIZE = 4 840assert (calcsize(ONF_FLOW_UPDATE_HEADER_PACK_STR) == 841 ONF_FLOW_UPDATE_HEADER_SIZE) 842 843# onf_flow_update_full, excluding onf_flow_update_header 844# reason, priority, idle_timeout, hard_timeout, match_len, table_id, 845# pad, cookie 846ONF_FLOW_UPDATE_FULL_PACK_STR = '!HHHHHBxQ' 847ONF_FLOW_UPDATE_FULL_SIZE = 24 - ONF_FLOW_UPDATE_HEADER_SIZE 848assert (calcsize(ONF_FLOW_UPDATE_FULL_PACK_STR) == 849 ONF_FLOW_UPDATE_FULL_SIZE) 850 851# onf_flow_update_abbrev, excluding onf_flow_update_header 852# xid 853ONF_FLOW_UPDATE_ABBREV_PACK_STR = '!I' 854ONF_FLOW_UPDATE_ABBREV_SIZE = 8 - ONF_FLOW_UPDATE_HEADER_SIZE 855assert (calcsize(ONF_FLOW_UPDATE_ABBREV_PACK_STR) == 856 ONF_FLOW_UPDATE_ABBREV_SIZE) 857 858# enum onf_flow_udpate_event 859ONFFME_ADDED = 0 # some variations in the spec; ONFMFE_ADD, ONFFME_ADD 860ONFFME_DELETED = 1 861ONFFME_MODIFIED = 2 862ONFFME_ABBREV = 3 863 864# enum onf_flow_monitor_msg_type 865ONFT_FLOW_MONITOR_CANCEL = 1870 # controller -> switch 866ONFT_FLOW_MONITOR_PAUSED = 1871 # switch -> controller 867ONFT_FLOW_MONITOR_RESUMED = 1872 # switch -> controller 868 869# EXT-230 Bundle extension 870 871# enum onf_exp_type 872ONF_ET_BUNDLE_CONTROL = 2300 873ONF_ET_BUNDLE_ADD_MESSAGE = 2301 874 875ONF_BUNDLE_CTRL_PACK_STR = '!IHH' 876ONF_BUNDLE_CTRL_SIZE = 8 877assert (calcsize(ONF_BUNDLE_CTRL_PACK_STR) == 878 ONF_BUNDLE_CTRL_SIZE) 879 880ONF_BUNDLE_ADD_MSG_PACK_STR = '!I2xH' 881ONF_BUNDLE_ADD_MSG_SIZE = 16 - OFP_HEADER_SIZE 882assert (calcsize(ONF_BUNDLE_ADD_MSG_PACK_STR) == 883 ONF_BUNDLE_ADD_MSG_SIZE) 884 885# enum onf_bundle_ctrl_type 886ONF_BCT_OPEN_REQUEST = 0 887ONF_BCT_OPEN_REPLY = 1 888ONF_BCT_CLOSE_REQUEST = 2 889ONF_BCT_CLOSE_REPLY = 3 890ONF_BCT_COMMIT_REQUEST = 4 891ONF_BCT_COMMIT_REPLY = 5 892ONF_BCT_DISCARD_REQUEST = 6 893ONF_BCT_DISCARD_REPLY = 7 894 895# enum onf_bundle_flags 896ONF_BF_ATOMIC = 1 << 0 897ONF_BF_ORDERED = 1 << 1 898 899# enum onf_bundle_prop_type 900ONF_ET_BPT_EXPERIMENTER = 0xffff 901 902# struct ofp_error_msg 903OFP_ERROR_MSG_PACK_STR = '!HH' 904OFP_ERROR_MSG_SIZE = 12 905assert (calcsize(OFP_ERROR_MSG_PACK_STR) + OFP_HEADER_SIZE == 906 OFP_ERROR_MSG_SIZE) 907 908# enum ofp_error_type 909OFPET_HELLO_FAILED = 0 # Hello protocol failed. 910OFPET_BAD_REQUEST = 1 # Request was not understood. 911OFPET_BAD_ACTION = 2 # Error in action description. 912OFPET_BAD_INSTRUCTION = 3 # Error in instruction list. 913OFPET_BAD_MATCH = 4 # Error in match. 914OFPET_FLOW_MOD_FAILED = 5 # Problem modifying flow entry. 915OFPET_GROUP_MOD_FAILED = 6 # Problem modifying group entry. 916OFPET_PORT_MOD_FAILED = 7 # OFPT_PORT_MOD failed. 917OFPET_TABLE_MOD_FAILED = 8 # Table mod request failed. 918OFPET_QUEUE_OP_FAILED = 9 # Queue operation failed. 919OFPET_SWITCH_CONFIG_FAILED = 10 # Switch config request failed. 920OFPET_ROLE_REQUEST_FAILED = 11 # Controller Role request failed. 921OFPET_METER_MOD_FAILED = 12 # Error in meter. 922OFPET_TABLE_FEATURES_FAILED = 13 # Setting table features failed. 923OFPET_EXPERIMENTER = 0xffff # Experimenter error messages. 924 925# enum ofp_hello_failed_code 926OFPHFC_INCOMPATIBLE = 0 # No compatible version. 927OFPHFC_EPERM = 1 # Permissions error. 928 929# enum ofp_bad_request_code 930OFPBRC_BAD_VERSION = 0 # ofp_header.version not supported. 931OFPBRC_BAD_TYPE = 1 # ofp_header.type not supported. 932OFPBRC_BAD_MULTIPART = 2 # ofp_multipart_request.type not 933 # supported. 934OFPBRC_BAD_EXPERIMENTER = 3 # Experimenter id not supported 935 # (in ofp_experimenter_header 936 # or ofp_multipart_request or 937 # ofp_multipart_reply). 938OFPBRC_BAD_EXP_TYPE = 4 # Experimenter type not supported. 939OFPBRC_EPERM = 5 # Permissions error. 940OFPBRC_BAD_LEN = 6 # Wrong request length for type. 941OFPBRC_BUFFER_EMPTY = 7 # Specified buffer has already been 942 # used. 943OFPBRC_BUFFER_UNKNOWN = 8 # Specified buffer does not exist. 944OFPBRC_BAD_TABLE_ID = 9 # Specified table-id invalid or does 945 # not exist. 946OFPBRC_IS_SLAVE = 10 # Denied because controller is slave. 947OFPBRC_BAD_PORT = 11 # Invalid port. 948OFPBRC_BAD_PACKET = 12 # Invalid packet in packet-out 949OFPBRC_MULTIPART_BUFFER_OVERFLOW = 13 # ofp_multipart_request 950 # overflowed the assigned buffer. 951 952# enum ofp_bad_action_code 953OFPBAC_BAD_TYPE = 0 # Unknown action type. 954OFPBAC_BAD_LEN = 1 # Length problem in actions. 955OFPBAC_BAD_EXPERIMENTER = 2 # Unknown experimenter id specified. 956OFPBAC_BAD_EXP_TYPE = 3 # Unknown action type for experimenter id. 957OFPBAC_BAD_OUT_PORT = 4 # Problem validating output action. 958OFPBAC_BAD_ARGUMENT = 5 # Bad action argument. 959OFPBAC_EPERM = 6 # Permissions error. 960OFPBAC_TOO_MANY = 7 # Can't handle this many actions. 961OFPBAC_BAD_QUEUE = 8 # Problem validating output queue. 962OFPBAC_BAD_OUT_GROUP = 9 # Invalid group id in forward action. 963OFPBAC_MATCH_INCONSISTENT = 10 # Action can't apply for this match, 964 # or Set-Field missing prerequisite. 965OFPBAC_UNSUPPORTED_ORDER = 11 # Action order is unsupported for 966 # the action list in an Apply-Actions 967 # instruction 968OFPBAC_BAD_TAG = 12 # Actions uses an unsupported tag/encap. 969OFPBAC_BAD_SET_TYPE = 13 # Unsupported type in SET_FIELD action. 970OFPBAC_BAD_SET_LEN = 14 # Length problem in SET_FIELD action. 971OFPBAC_BAD_SET_ARGUMENT = 15 # Bad arguement in SET_FIELD action. 972 973# enum ofp_bad_instruction_code 974OFPBIC_UNKNOWN_INST = 0 # Unknown instruction. 975OFPBIC_UNSUP_INST = 1 # Switch or table does not support 976 # the instruction. 977OFPBIC_BAD_TABLE_ID = 2 # Invalid Table-Id specified 978OFPBIC_UNSUP_METADATA = 3 # Metadata value unsupported by datapath. 979OFPBIC_UNSUP_METADATA_MASK = 4 # Metadata mask value unsupported by 980 # datapath. 981OFPBIC_BAD_EXPERIMENTER = 5 # Unknown experimenter id specified. 982OFPBIC_BAD_EXP_TYPE = 6 # Unknown instruction for experimenter id. 983OFPBIC_BAD_LEN = 7 # Length problem in instrucitons. 984OFPBIC_EPERM = 8 # Permissions error. 985 986# enum ofp_bad_match_code 987OFPBMC_BAD_TYPE = 0 # Unsupported match type apecified by 988 # the match. 989OFPBMC_BAD_LEN = 1 # Length problem in math. 990OFPBMC_BAD_TAG = 2 # Match uses an unsupported tag/encap. 991OFPBMC_BAD_DL_ADDR_MASK = 3 # Unsupported datalink addr mask - 992 # switch does not support arbitrary 993 # datalink address mask. 994OFPBMC_BAD_NW_ADDR_MASK = 4 # Unsupported network addr mask - 995 # switch does not support arbitrary 996 # network addres mask. 997OFPBMC_BAD_WILDCARDS = 5 # Unsupported combination of fields 998 # masked or omitted in the match. 999OFPBMC_BAD_FIELD = 6 # Unsupported field type in the match. 1000OFPBMC_BAD_VALUE = 7 # Unsupported value in a match field. 1001OFPBMC_BAD_MASK = 8 # Unsupported mask specified in the 1002 # match. 1003OFPBMC_BAD_PREREQ = 9 # A prerequisite was not met. 1004OFPBMC_DUP_FIELD = 10 # A field type was duplicated. 1005OFPBMC_EPERM = 11 # Permissions error. 1006 1007# enum ofp_flow_mod_failed_code 1008OFPFMFC_UNKNOWN = 0 # Unspecified error. 1009OFPFMFC_TABLE_FULL = 1 # Flow not added because table was full. 1010OFPFMFC_BAD_TABLE_ID = 2 # Table does not exist 1011OFPFMFC_OVERLAP = 3 # Attempted to add overlapping flow 1012 # with CHECK_OVERLAP flag set. 1013OFPFMFC_EPERM = 4 # Permissions error. 1014OFPFMFC_BAD_TIMEOUT = 5 # Flow not added because of 1015 # unsupported idle/hard timeout. 1016OFPFMFC_BAD_COMMAND = 6 # Unsupported or unknown command. 1017OFPFMFC_BAD_FLAGS = 7 # Unsupported or unknown flags. 1018 1019# enum ofp_group_mod_failed_code 1020OFPGMFC_GROUP_EXISTS = 0 1021OFPGMFC_INVALID_GROUP = 1 1022OFPGMFC_WEIGHT_UNSUPPORTED = 2 # Switch does not support unequal load 1023 # sharing with select groups. 1024OFPGMFC_OUT_OF_GROUPS = 3 # The group table is full. 1025OFPGMFC_OUT_OF_BUCKETS = 4 # The maximum number of action buckets 1026 # for a group has been exceeded. 1027OFPGMFC_CHAINING_UNSUPPORTED = 5 # Switch does not support groups that 1028 # forward to groups. 1029OFPGMFC_WATCH_UNSUPPORTED = 6 # This group cannot watch the 1030 # watch_port or watch_group specified. 1031OFPGMFC_LOOP = 7 # Group entry would cause a loop. 1032OFPGMFC_UNKNOWN_GROUP = 8 # Group not modified because a group 1033 # MODIFY attempted to modify a 1034 # non-existent group. 1035OFPGMFC_CHAINED_GROUP = 9 # Group not deleted because another 1036 # group is forwarding to it. 1037OFPGMFC_BAD_TYPE = 10 # Unsupported or unknown group type. 1038OFPGMFC_BAD_COMMAND = 11 # Unsupported or unknown command. 1039OFPGMFC_BAD_BUCKET = 12 # Error in bucket. 1040OFPGMFC_BAD_WATCH = 13 # Error in watch port/group. 1041OFPGMFC_EPERM = 14 # Permissions error. 1042 1043# enum ofp_port_mod_failed_code 1044OFPPMFC_BAD_PORT = 0 # Specified port does not exist. 1045OFPPMFC_BAD_HW_ADDR = 1 # Specified hardware address does not 1046 # match the port number. 1047OFPPMFC_BAD_CONFIG = 2 # Specified config is invalid. 1048OFPPMFC_BAD_ADVERTISE = 3 # Specified advertise is invalid. 1049OFPPMFC_EPERM = 4 # Permissions error. 1050 1051# enum ofp_table_mod_failed_code 1052OFPTMFC_BAD_TABLE = 0 # Specified table does not exist. 1053OFPTMFC_BAD_CONFIG = 1 # Specified config is invalid. 1054OFPTMFC_EPERM = 2 # Permissions error 1055 1056# enum ofp_queue_op_failed_code 1057OFPQOFC_BAD_PORT = 0 # Invalid port (or port does not exist). 1058OFPQOFC_BAD_QUEUE = 1 # Queue does not exist. 1059OFPQOFC_EPERM = 2 # Permissions error. 1060 1061# enum ofp_switch_config_failed_code 1062OFPSCFC_BAD_FLAGS = 0 # Specified flags is invalid. 1063OFPSCFC_BAD_LEN = 1 # Specified len is invalid. 1064OFPQCFC_EPERM = 2 # Permissions error (depracated). 1065 # New or updated Ryu applications shall use 1066 # OFPSCFC_EPERM. The variable name is a typo of 1067 # in specifications before v1.3.1 (EXT-208). 1068OFPSCFC_EPERM = 2 # Permissions error. 1069 1070# enum ofp_role_request_failed_code 1071OFPRRFC_STALE = 0 # Stale Message: old generation_id. 1072OFPRRFC_UNSUP = 1 # Controller role change unsupported. 1073OFPRRFC_BAD_ROLE = 2 # Invalid role. 1074 1075# enum ofp_meter_mod_failed_code 1076OFPMMFC_UNKNOWN = 0 # Unspecified error. 1077OFPMMFC_METER_EXISTS = 1 # Meter not added because a Meter ADD 1078 # attempted to replace an existing Meter. 1079OFPMMFC_INVALID_METER = 2 # Meter not added because Meter specified 1080 # is invalid. 1081OFPMMFC_UNKNOWN_METER = 3 # Meter not modified because a Meter 1082 # MODIFY attempted to modify a non-existent 1083 # Meter. 1084OFPMMFC_BAD_COMMAND = 4 # Unsupported or unknown command. 1085OFPMMFC_BAD_FLAGS = 5 # Flag configuration unsupported. 1086OFPMMFC_BAD_RATE = 6 # Rate unsupported. 1087OFPMMFC_BAD_BURST = 7 # Burst size unsupported. 1088OFPMMFC_BAD_BAND = 8 # Band unsupported. 1089OFPMMFC_BAD_BAND_VALUE = 9 # Band value unsupported. 1090OFPMMFC_OUT_OF_METERS = 10 # No more meters availabile. 1091OFPMMFC_OUT_OF_BANDS = 11 # The maximum number of properties 1092 # for a meter has been exceeded. 1093 1094# enum ofp_table_features_failed_code 1095OFPTFFC_BAD_TABLE = 0 # Specified table does not exist. 1096OFPTFFC_BAD_METADATA = 1 # Invalid metadata mask. 1097OFPTFFC_BAD_TYPE = 2 # Unknown property type. 1098OFPTFFC_BAD_LEN = 3 # Length problem in properties. 1099OFPTFFC_BAD_ARGUMENT = 4 # Unsupported property value. 1100OFPTFFC_EPERM = 5 # Permissions error. 1101 1102# struct ofp_error_experimenter_msg 1103OFP_ERROR_EXPERIMENTER_MSG_PACK_STR = '!HHI' 1104OFP_ERROR_EXPERIMENTER_MSG_SIZE = 16 1105assert (calcsize(OFP_ERROR_EXPERIMENTER_MSG_PACK_STR) + 1106 OFP_HEADER_SIZE) == OFP_ERROR_EXPERIMENTER_MSG_SIZE 1107 1108# struct ofp_experimenter_header 1109OFP_EXPERIMENTER_HEADER_PACK_STR = '!II' 1110OFP_EXPERIMENTER_HEADER_SIZE = 16 1111assert (calcsize(OFP_EXPERIMENTER_HEADER_PACK_STR) + OFP_HEADER_SIZE 1112 == OFP_EXPERIMENTER_HEADER_SIZE) 1113 1114# exp_type values for OFPET_EXPERIMENTER (experimenter=ONF_EXPERIMENTER_ID) 1115ONFERR_ET_UNKNOWN = 2300 1116ONFERR_ET_EPERM = 2301 1117ONFERR_ET_BAD_ID = 2302 1118ONFERR_ET_BUNDLE_EXIST = 2303 1119ONFERR_ET_BUNDLE_CLOSED = 2304 1120ONFERR_ET_OUT_OF_BUNDLES = 2305 1121ONFERR_ET_BAD_TYPE = 2306 1122ONFERR_ET_BAD_FLAGS = 2307 1123ONFERR_ET_MSG_BAD_LEN = 2308 1124ONFERR_ET_MSG_BAD_XID = 2309 1125ONFERR_ET_MSG_UNSUP = 2310 1126ONFERR_ET_MSG_CONFLICT = 2311 1127ONFERR_ET_MSG_TOO_MANY = 2312 1128ONFERR_ET_FAILED = 2313 1129ONFERR_ET_TIMEOUT = 2314 1130ONFERR_ET_BUNDLE_IN_PROGRESS = 2315 1131ONFERR_ET_CANT_SYNC = 2320 1132ONFERR_ET_BAD_PRIORITY = 2360 1133ONFERR_ET_ASYNC_INVALUD = 2370 1134ONFERR_ET_ASYNC_UNSUPPORTED = 2371 1135ONFERR_ET_ASYNC_EPERM = 2372 1136ONFERR_DUP_INSTRUCTION = 2600 # the lack of _ET_ is per spec 1137ONFERR_ET_MPART_REQUEST_TIMEOUT = 2640 1138ONFERR_ET_MPART_REPLY_TIMEOUT = 2641 1139 1140# struct ofp_hello 1141OFP_HELLO_HEADER_SIZE = 8 1142 1143# struct ofp_hello_elem_header 1144OFP_HELLO_ELEM_HEADER_PACK_STR = '!HH' 1145OFP_HELLO_ELEM_HEADER_SIZE = 4 1146assert (calcsize(OFP_HELLO_ELEM_HEADER_PACK_STR) == OFP_HELLO_ELEM_HEADER_SIZE) 1147 1148# enum ofp_hello_elem_type 1149OFPHET_VERSIONBITMAP = 1 1150 1151# struct ofp_hello_elem_versionbitmap 1152OFP_HELLO_ELEM_VERSIONBITMAP_HEADER_PACK_STR = '!HH' 1153OFP_HELLO_ELEM_VERSIONBITMAP_HEADER_SIZE = 4 1154assert (calcsize(OFP_HELLO_ELEM_VERSIONBITMAP_HEADER_PACK_STR) == 1155 OFP_HELLO_ELEM_VERSIONBITMAP_HEADER_SIZE) 1156 1157# OXM 1158 1159 1160def _oxm_tlv_header(class_, field, hasmask, length): 1161 return (class_ << 16) | (field << 9) | (hasmask << 8) | length 1162 1163 1164def oxm_tlv_header(field, length): 1165 return _oxm_tlv_header(OFPXMC_OPENFLOW_BASIC, field, 0, length) 1166 1167 1168def oxm_tlv_header_w(field, length): 1169 return _oxm_tlv_header(OFPXMC_OPENFLOW_BASIC, field, 1, length * 2) 1170 1171 1172def oxm_tlv_header_extract_hasmask(header): 1173 return (header >> 8) & 1 1174 1175 1176def oxm_tlv_header_extract_length(header): 1177 if oxm_tlv_header_extract_hasmask(header): 1178 length = (header & 0xff) // 2 1179 else: 1180 length = header & 0xff 1181 return length 1182 1183 1184oxm_types = [ 1185 oxm_fields.OpenFlowBasic('in_port', 0, type_desc.Int4), 1186 oxm_fields.OpenFlowBasic('in_phy_port', 1, type_desc.Int4), 1187 oxm_fields.OpenFlowBasic('metadata', 2, type_desc.Int8), 1188 oxm_fields.OpenFlowBasic('eth_dst', 3, type_desc.MacAddr), 1189 oxm_fields.OpenFlowBasic('eth_src', 4, type_desc.MacAddr), 1190 oxm_fields.OpenFlowBasic('eth_type', 5, type_desc.Int2), 1191 oxm_fields.OpenFlowBasic('vlan_vid', 6, type_desc.Int2), 1192 oxm_fields.OpenFlowBasic('vlan_pcp', 7, type_desc.Int1), 1193 oxm_fields.OpenFlowBasic('ip_dscp', 8, type_desc.Int1), 1194 oxm_fields.OpenFlowBasic('ip_ecn', 9, type_desc.Int1), 1195 oxm_fields.OpenFlowBasic('ip_proto', 10, type_desc.Int1), 1196 oxm_fields.OpenFlowBasic('ipv4_src', 11, type_desc.IPv4Addr), 1197 oxm_fields.OpenFlowBasic('ipv4_dst', 12, type_desc.IPv4Addr), 1198 oxm_fields.OpenFlowBasic('tcp_src', 13, type_desc.Int2), 1199 oxm_fields.OpenFlowBasic('tcp_dst', 14, type_desc.Int2), 1200 oxm_fields.OpenFlowBasic('udp_src', 15, type_desc.Int2), 1201 oxm_fields.OpenFlowBasic('udp_dst', 16, type_desc.Int2), 1202 oxm_fields.OpenFlowBasic('sctp_src', 17, type_desc.Int2), 1203 oxm_fields.OpenFlowBasic('sctp_dst', 18, type_desc.Int2), 1204 oxm_fields.OpenFlowBasic('icmpv4_type', 19, type_desc.Int1), 1205 oxm_fields.OpenFlowBasic('icmpv4_code', 20, type_desc.Int1), 1206 oxm_fields.OpenFlowBasic('arp_op', 21, type_desc.Int2), 1207 oxm_fields.OpenFlowBasic('arp_spa', 22, type_desc.IPv4Addr), 1208 oxm_fields.OpenFlowBasic('arp_tpa', 23, type_desc.IPv4Addr), 1209 oxm_fields.OpenFlowBasic('arp_sha', 24, type_desc.MacAddr), 1210 oxm_fields.OpenFlowBasic('arp_tha', 25, type_desc.MacAddr), 1211 oxm_fields.OpenFlowBasic('ipv6_src', 26, type_desc.IPv6Addr), 1212 oxm_fields.OpenFlowBasic('ipv6_dst', 27, type_desc.IPv6Addr), 1213 oxm_fields.OpenFlowBasic('ipv6_flabel', 28, type_desc.Int4), 1214 oxm_fields.OpenFlowBasic('icmpv6_type', 29, type_desc.Int1), 1215 oxm_fields.OpenFlowBasic('icmpv6_code', 30, type_desc.Int1), 1216 oxm_fields.OpenFlowBasic('ipv6_nd_target', 31, type_desc.IPv6Addr), 1217 oxm_fields.OpenFlowBasic('ipv6_nd_sll', 32, type_desc.MacAddr), 1218 oxm_fields.OpenFlowBasic('ipv6_nd_tll', 33, type_desc.MacAddr), 1219 oxm_fields.OpenFlowBasic('mpls_label', 34, type_desc.Int4), 1220 oxm_fields.OpenFlowBasic('mpls_tc', 35, type_desc.Int1), 1221 oxm_fields.OpenFlowBasic('mpls_bos', 36, type_desc.Int1), 1222 oxm_fields.OpenFlowBasic('pbb_isid', 37, type_desc.Int3), 1223 oxm_fields.OpenFlowBasic('tunnel_id', 38, type_desc.Int8), 1224 oxm_fields.OpenFlowBasic('ipv6_exthdr', 39, type_desc.Int2), 1225 # EXT-256 Old version of ONF Extension 1226 oxm_fields.OldONFExperimenter('pbb_uca', 2560, type_desc.Int1), 1227 # EXT-109 TCP flags match field Extension 1228 oxm_fields.ONFExperimenter('tcp_flags', 42, type_desc.Int2), 1229 # EXT-233 Output match Extension 1230 # NOTE(yamamoto): The spec says uint64_t but I assume it's an error. 1231 oxm_fields.ONFExperimenter('actset_output', 43, type_desc.Int4), 1232] + nicira_ext.oxm_types 1233 1234oxm_fields.generate(__name__) 1235 1236 1237# Note: struct ofp_prop_experimenter is specific to this implementation. 1238# It does not have a corresponding structure in the specification. 1239# This structure defines common structure for ofp_*_prop_experimenter. 1240# struct ofp_prop_experimenter 1241OFP_PROP_EXPERIMENTER_PACK_STR = '!HHII' 1242OFP_PROP_EXPERIMENTER_SIZE = 12 1243assert (calcsize(OFP_PROP_EXPERIMENTER_PACK_STR) == 1244 OFP_PROP_EXPERIMENTER_SIZE) 1245 1246# generate utility methods 1247ofproto_utils.generate(__name__) 1248 1249# define constants 1250OFP_VERSION = 0x04 1251OFP_TCP_PORT = 6633 1252MAX_XID = 0xffffffff 1253 1254OFP_NO_BUFFER = 0xffffffff 1255