/* Copyright (c) 2008, 2011, 2012, 2013, 2014, 2016 The Board of Trustees of The Leland Stanford * Junior University * * We are making the OpenFlow specification and associated documentation * (Software) available for public use and benefit with the expectation * that others will use, modify and enhance the Software and contribute * those enhancements back to the community. However, since we would * like to make the Software available for broadest use, with as few * restrictions as possible permission is hereby granted, free of * charge, to any person obtaining a copy of this Software to deal in * the Software under the copyrights without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * The name and trademarks of copyright holder(s) may NOT be used in * advertising or publicity pertaining to the Software or any * derivatives without specific, written prior permission. */ /* * Copyright (c) 2008-2014 Nicira, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef OPENFLOW_COMMON_H #define OPENFLOW_COMMON_H 1 #include #ifdef SWIG #define OFP_ASSERT(EXPR) /* SWIG can't handle OFP_ASSERT. */ #elif !defined(__cplusplus) /* Build-time assertion for use in a declaration context. */ #define OFP_ASSERT(EXPR) \ extern int (*build_assert(void))[ sizeof(struct { \ unsigned int build_assert_failed : (EXPR) ? 1 : -1; })] #else /* __cplusplus */ #include #define OFP_ASSERT BOOST_STATIC_ASSERT #endif /* __cplusplus */ /* Version number: * Non-experimental versions released: 0x01 0x02 * Experimental versions released: 0x81 -- 0x99 */ /* The most significant bit being set in the version field indicates an * experimental OpenFlow version. */ enum ofp_version { OFP10_VERSION = 0x01, OFP11_VERSION = 0x02, OFP12_VERSION = 0x03, OFP13_VERSION = 0x04, OFP14_VERSION = 0x05, OFP15_VERSION = 0x06 }; /* Vendor (aka experimenter) IDs. * * These are used in various places in OpenFlow to identify an extension * defined by some vendor, as opposed to a standardized part of the core * OpenFlow protocol. * * Vendor IDs whose top 8 bits are 0 hold an Ethernet OUI in their low 24 bits. * The Open Networking Foundation assigns vendor IDs whose top 8 bits are * nonzero. * * A few vendor IDs are special: * * - OF_VENDOR_ID is not a real vendor ID and does not appear in the * OpenFlow protocol itself. It can occasionally be useful within Open * vSwitch to identify a standardized part of OpenFlow. * * - ONF_VENDOR_ID is being used within the ONF "extensibility" working * group to identify extensions being proposed for standardization. * * The list is sorted numerically. */ #define OF_VENDOR_ID 0 #define HPL_VENDOR_ID 0x000004EA /* HP Labs. */ #define NTR_VENDOR_ID 0x0000154d /* Netronome. */ #define NTR_COMPAT_VENDOR_ID 0x00001540 /* Incorrect value used in v2.4. */ #define NX_VENDOR_ID 0x00002320 /* Nicira. */ #define ONF_VENDOR_ID 0x4f4e4600 /* Open Networking Foundation. */ #define OFP_MAX_TABLE_NAME_LEN 32 #define OFP_MAX_PORT_NAME_LEN 16 #define OFP_OLD_PORT 6633 #define OFP_PORT 6653 #define OFP_DEFAULT_MISS_SEND_LEN 128 /* Values below this cutoff are 802.3 packets and the two bytes * following MAC addresses are used as a frame length. Otherwise, the * two bytes are used as the Ethernet type. */ #define OFP_DL_TYPE_ETH2_CUTOFF 0x0600 /* Value of dl_type to indicate that the frame does not include an * Ethernet type. */ #define OFP_DL_TYPE_NOT_ETH_TYPE 0x05ff /* Value used in "idle_timeout" and "hard_timeout" to indicate that the entry * is permanent. */ #define OFP_FLOW_PERMANENT 0 /* By default, choose a priority in the middle. */ #define OFP_DEFAULT_PRIORITY 0x8000 /* Header on all OpenFlow packets. */ struct ofp_header { uint8_t version; /* An OpenFlow version number, e.g. OFP10_VERSION. */ uint8_t type; /* One of the OFPT_ constants. */ ovs_be16 length; /* Length including this ofp_header. */ ovs_be32 xid; /* Transaction id associated with this packet. Replies use the same id as was in the request to facilitate pairing. */ }; OFP_ASSERT(sizeof(struct ofp_header) == 8); /* OFPT_ERROR: Error message (datapath -> controller). */ struct ofp_error_msg { ovs_be16 type; ovs_be16 code; uint8_t data[0]; /* Variable-length data. Interpreted based on the type and code. */ }; OFP_ASSERT(sizeof(struct ofp_error_msg) == 4); enum ofp_config_flags { /* Handling of IP fragments. */ 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_NX_MATCH = 3, /* Make first fragments available for matching. */ OFPC_FRAG_MASK = 3, /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OpenFlow 1.3 */ /* TTL processing - applicable for IP and MPLS packets. */ OFPC_INVALID_TTL_TO_CONTROLLER = 1 << 2, /* Send packets with invalid TTL to the controller. */ }; /* Switch configuration. */ struct ofp_switch_config { ovs_be16 flags; /* OFPC_* flags. */ ovs_be16 miss_send_len; /* Max bytes of new flow that datapath should send to the controller. */ }; OFP_ASSERT(sizeof(struct ofp_switch_config) == 4); /* Common flags to indicate behavior of the physical port. These flags are * used in ofp_port to describe the current configuration. They are used in * the ofp_port_mod message to configure the port's behavior. */ enum ofp_port_config { OFPPC_PORT_DOWN = 1 << 0, /* Port is administratively down. */ OFPPC_NO_RECV = 1 << 2, /* Drop all packets received 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. */ }; /* Common current state of the physical port. These are not configurable from * the controller. */ enum ofp_port_state { OFPPS_LINK_DOWN = 1 << 0, /* No physical link present. */ }; /* Common features of physical ports available in a datapath. */ 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. */ }; /* Generic OpenFlow property header, as used by various messages in OF1.3+, and * especially in OF1.4. * * The OpenFlow specs prefer to define a new structure with a specialized name * each time this property structure comes up: struct * ofp_port_desc_prop_header, struct ofp_controller_status_prop_header, struct * ofp_table_mod_prop_header, and more. They're all the same, so it's easier * to unify them. */ struct ofp_prop_header { ovs_be16 type; ovs_be16 len; /* Followed by: * - 'len - 4' bytes of payload. * - PAD_SIZE(len, 8) bytes of zeros. */ }; OFP_ASSERT(sizeof(struct ofp_prop_header) == 4); /* Generic OpenFlow experimenter property header. * * Again the OpenFlow specs define this over and over again and it's easier to * unify them. */ struct ofp_prop_experimenter { ovs_be16 type; /* Generally 0xffff (in one case 0xfffe). */ ovs_be16 len; /* Length in bytes of this property. */ ovs_be32 experimenter; /* Experimenter ID which takes the same form as * in struct ofp_experimenter_header. */ ovs_be32 exp_type; /* Experimenter defined. */ /* Followed by: * - 'len - 12' bytes of payload. * - PAD_SIZE(len, 8) bytes of zeros. */ }; OFP_ASSERT(sizeof(struct ofp_prop_experimenter) == 12); /* Switch features. */ struct ofp_switch_features { ovs_be64 datapath_id; /* Datapath unique ID. The lower 48-bits are for a MAC address, while the upper 16-bits are implementer-defined. */ ovs_be32 n_buffers; /* Max packets buffered at once. */ uint8_t n_tables; /* Number of tables supported by datapath. */ uint8_t auxiliary_id; /* OF 1.3: Identify auxiliary connections */ uint8_t pad[2]; /* Align to 64-bits. */ /* Features. */ ovs_be32 capabilities; /* OFPC_*, OFPC10_*, OFPC11_*, OFPC12_*. */ ovs_be32 actions; /* Bitmap of supported "ofp_action_type"s. * DEPRECATED in OpenFlow 1.1 */ /* Followed by an array of struct ofp10_phy_port or struct ofp11_port * structures. The number is inferred from header.length. * REMOVED in OpenFlow 1.3 */ }; OFP_ASSERT(sizeof(struct ofp_switch_features) == 24); /* Common capabilities supported by the datapath (struct ofp_switch_features, * member capabilities). */ 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_IP_REASM = 1 << 5, /* Can reassemble IP fragments. */ OFPC_QUEUE_STATS = 1 << 6, /* Queue statistics. */ OFPC_ARP_MATCH_IP = 1 << 7 /* Match IP addresses in ARP pkts. */ }; /* Why is this packet being sent to the controller? */ enum ofp_packet_in_reason { /* Standard reasons. */ OFPR_NO_MATCH, /* No matching flow. */ OFPR_ACTION, /* Action explicitly output to controller. */ OFPR_INVALID_TTL, /* Packet has invalid TTL. */ OFPR_ACTION_SET, /* Output to controller in action set */ OFPR_GROUP, /* Output to controller in group bucket */ OFPR_PACKET_OUT, /* Output to controller in packet-out */ #define OFPR10_BITS \ ((1u << OFPR_NO_MATCH) | (1u << OFPR_ACTION) | (1u << OFPR_INVALID_TTL)) #define OFPR14_BITS \ (OFPR10_BITS | \ (1u << OFPR_ACTION_SET) | (1u << OFPR_GROUP) | (1u << OFPR_PACKET_OUT)) /* Nonstandard reason--not exposed via OpenFlow. */ OFPR_EXPLICIT_MISS, OFPR_IMPLICIT_MISS, OFPR_N_REASONS }; enum ofp_flow_mod_command { OFPFC_ADD, /* New flow. */ OFPFC_MODIFY, /* Modify all matching flows. */ OFPFC_MODIFY_STRICT, /* Modify entry strictly matching wildcards */ OFPFC_DELETE, /* Delete all matching flows. */ OFPFC_DELETE_STRICT /* Strictly match wildcards and priority. */ }; 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. */ }; /* Why was this flow removed? */ enum ofp_flow_removed_reason { OFPRR_IDLE_TIMEOUT, /* Flow idle time exceeded idle_timeout. */ OFPRR_HARD_TIMEOUT, /* Time exceeded hard_timeout. */ OFPRR_DELETE, /* Evicted by a DELETE flow mod. */ OFPRR_GROUP_DELETE, /* Group was removed. */ OFPRR_METER_DELETE, /* Meter was removed. */ OFPRR_EVICTION, /* Switch eviction to free resources. */ #define OFPRR10_BITS \ ((1u << OFPRR_IDLE_TIMEOUT) | \ (1u << OFPRR_HARD_TIMEOUT) | \ (1u << OFPRR_DELETE)) #define OFPRR14_BITS \ (OFPRR10_BITS | \ (1u << OFPRR_GROUP_DELETE) | \ (1u << OFPRR_METER_DELETE) | \ (1u << OFPRR_EVICTION)) OVS_OFPRR_NONE /* OVS internal_use only, keep last!. */ }; /* What changed about the physical port */ enum ofp_port_reason { OFPPR_ADD, /* The port was added. */ OFPPR_DELETE, /* The port was removed. */ OFPPR_MODIFY, /* Some attribute of the port has changed. */ #define OFPPR_BITS ((1u << OFPPR_ADD) | \ (1u << OFPPR_DELETE) | \ (1u << OFPPR_MODIFY)) OFPPR_N_REASONS /* Denotes number of reasons. */ }; /* A physical port has changed in the datapath */ struct ofp_port_status { uint8_t reason; /* One of OFPPR_*. */ uint8_t pad[7]; /* Align to 64-bits. */ /* Followed by struct ofp10_phy_port, struct ofp11_port, or struct * ofp14_port. */ }; OFP_ASSERT(sizeof(struct ofp_port_status) == 8); enum ofp_stats_reply_flags { OFPSF_REPLY_MORE = 1 << 0 /* More replies to follow. */ }; #define DESC_STR_LEN 256 #define SERIAL_NUM_LEN 32 /* Body of reply to OFPST_DESC request. Each entry is a NULL-terminated ASCII * string. */ struct ofp_desc_stats { char mfr_desc[DESC_STR_LEN]; /* Manufacturer description. */ char hw_desc[DESC_STR_LEN]; /* Hardware description. */ char sw_desc[DESC_STR_LEN]; /* Software description. */ char serial_num[SERIAL_NUM_LEN]; /* Serial number. */ char dp_desc[DESC_STR_LEN]; /* Human readable description of the datapath. */ }; OFP_ASSERT(sizeof(struct ofp_desc_stats) == 1056); /* Reply to OFPST_AGGREGATE request. */ struct ofp_aggregate_stats_reply { ovs_32aligned_be64 packet_count; /* Number of packets in flows. */ ovs_32aligned_be64 byte_count; /* Number of bytes in flows. */ ovs_be32 flow_count; /* Number of flows. */ uint8_t pad[4]; /* Align to 64 bits. */ }; OFP_ASSERT(sizeof(struct ofp_aggregate_stats_reply) == 24); /* The match type indicates the match structure (set of fields that compose the * match) in use. The match type is placed in the type field at the beginning * of all match structures. The "OpenFlow Extensible Match" type corresponds * to OXM TLV format described below and must be supported by all OpenFlow * switches. Extensions that define other match types may be published on the * ONF wiki. Support for extensions is optional. */ enum ofp_match_type { OFPMT_STANDARD = 0, /* The match fields defined in the ofp11_match structure apply */ OFPMT_OXM = 1, /* OpenFlow Extensible Match */ }; /* Group numbering. Groups can use any number up to OFPG_MAX. */ enum ofp_group { /* Last usable group number. */ OFPG_MAX = 0xffffff00, /* Fake groups. */ OFPG_ALL = 0xfffffffc, /* All groups, for group delete commands. */ OFPG_ANY = 0xffffffff /* Wildcard, for flow stats requests. */ }; /* Group configuration flags */ enum 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 */ }; enum ofp_hello_elem_type { OFPHET_VERSIONBITMAP = 1, /* Bitmap of version supported. */ }; /* Common header for all Hello Elements */ struct ofp_hello_elem_header { ovs_be16 type; /* One of OFPHET_*. */ ovs_be16 length; /* Length in bytes of this element. */ }; OFP_ASSERT(sizeof(struct ofp_hello_elem_header) == 4); /* Table numbering. Tables can use any number up to OFPT_MAX. */ enum ofp_table { /* Last usable table number. */ OFPTT_MAX = 0xfe, /* Fake tables. */ OFPTT_ALL = 0xff /* Wildcard table used for table config, flow stats and flow deletes. */ }; enum ofp_table_config { /* OpenFlow 1.1 and 1.2 defined this field as shown. * OpenFlow 1.3 and later mark this field as deprecated, but have not * reused it for any new purpose. */ OFPTC11_TABLE_MISS_CONTROLLER = 0 << 0, /* Send to controller. */ OFPTC11_TABLE_MISS_CONTINUE = 1 << 0, /* Go to next table, like OF1.0. */ OFPTC11_TABLE_MISS_DROP = 2 << 0, /* Drop the packet. */ OFPTC11_TABLE_MISS_MASK = 3 << 0, /* OpenFlow 1.4. */ OFPTC14_EVICTION = 1 << 2, /* Allow table to evict flows. */ OFPTC14_VACANCY_EVENTS = 1 << 3, /* Enable vacancy events. */ }; #endif /* openflow/openflow-common.h */