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/* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
* Junior University
* Copyright (c) 2011 Open Networking Foundation
*
* 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.
*/
/* OpenFlow: protocol between controller and datapath. */
#ifndef OPENFLOW_OPENFLOW_H
#define OPENFLOW_OPENFLOW_H 1
#ifdef __KERNEL__
#include <linux/types.h>
#else
#include <stdint.h>
#endif
#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 */
#define OFP_ASSERT(_EXPR) typedef int build_assert_failed[(_EXPR) ? 1 : -1]
#endif /* __cplusplus */
#ifndef SWIG
#define OFP_PACKED __attribute__((packed))
#else
#define OFP_PACKED /* SWIG doesn't understand __attribute. */
#endif
/* Version number:
* Non-experimental versions released: 0x01 = 1.0 ; 0x02 = 1.1 ; 0x03 = 1.2
* Experimental versions released: 0x81 -- 0x99
*/
/* The most significant bit being set in the version field indicates an
* experimental OpenFlow version.
*/
#define OFP_VERSION 0x03
#define OFP_MAX_TABLE_NAME_LEN 32
#define OFP_MAX_PORT_NAME_LEN 16
#define OFP_TCP_PORT 6633
#define OFP_SSL_PORT 6633
#define OFP_ETH_ALEN 6 /* Bytes in an Ethernet address. */
/* Port numbering. Ports are numbered starting from 1. */
enum ofp_port_no {
/* Maximum number of physical and logical switch ports. */
OFPP_MAX = 0xffffff00,
/* Reserved OpenFlow Port (fake output "ports"). */
OFPP_IN_PORT = 0xfffffff8, /* Send the packet out the input port. This
reserved port must be explicitly used
in order to send back out of the input
port. */
OFPP_TABLE = 0xfffffff9, /* Submit the packet to the first flow table
NB: This destination port can only be
used in packet-out messages. */
OFPP_NORMAL = 0xfffffffa, /* Process with normal L2/L3 switching. */
OFPP_FLOOD = 0xfffffffb, /* All physical ports in VLAN, except input
port and those blocked or link down. */
OFPP_ALL = 0xfffffffc, /* All physical ports except input port. */
OFPP_CONTROLLER = 0xfffffffd, /* Send to controller. */
OFPP_LOCAL = 0xfffffffe, /* Local openflow "port". */
OFPP_ANY = 0xffffffff /* Wildcard port used only for flow mod
(delete) and flow stats requests. Selects
all flows regardless of output port
(including flows with no output port). */
};
enum ofp_type {
/* Immutable messages. */
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 */
/* Switch configuration messages. */
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 */
/* Asynchronous messages. */
OFPT_PACKET_IN = 10, /* Async message */
OFPT_FLOW_REMOVED = 11, /* Async message */
OFPT_PORT_STATUS = 12, /* Async message */
/* Controller command messages. */
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 */
/* Statistics messages. */
OFPT_STATS_REQUEST = 18, /* Controller/switch message */
OFPT_STATS_REPLY = 19, /* Controller/switch message */
/* Barrier messages. */
OFPT_BARRIER_REQUEST = 20, /* Controller/switch message */
OFPT_BARRIER_REPLY = 21, /* Controller/switch message */
/* Queue Configuration messages. */
OFPT_QUEUE_GET_CONFIG_REQUEST = 22, /* Controller/switch message */
OFPT_QUEUE_GET_CONFIG_REPLY = 23, /* Controller/switch message */
/* Controller role change request messages. */
OFPT_ROLE_REQUEST = 24, /* Controller/switch message */
OFPT_ROLE_REPLY = 25, /* Controller/switch message */
};
/* Header on all OpenFlow packets. */
struct ofp_header {
uint8_t version; /* OFP_VERSION. */
uint8_t type; /* One of the OFPT_ constants. */
uint16_t length; /* Length including this ofp_header. */
uint32_t 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_HELLO. This message has an empty body, but implementations must
* ignore any data included in the body, to allow for future extensions. */
struct ofp_hello {
struct ofp_header header;
};
#define OFP_DEFAULT_MISS_SEND_LEN 128
enum ofp_config_flags {
/* Handling of IP fragments. */
OFPC_FRAG_NORMAL = 0, /* No special handling for fragments. */
OFPC_FRAG_DROP = 1 << 0, /* Drop fragments. */
OFPC_FRAG_REASM = 1 << 1, /* Reassemble (only if OFPC_IP_REASM set). */
OFPC_FRAG_MASK = 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 {
struct ofp_header header;
uint16_t flags; /* OFPC_* flags. */
uint16_t miss_send_len; /* Max bytes of new flow that datapath
should send to the controller. See
ofp_controller_max_len for valid values.
*/
};
OFP_ASSERT(sizeof(struct ofp_switch_config) == 12);
/* Flags to indicate behavior of the flow table for unmatched packets.
These flags are used in ofp_table_stats messages to describe the current
configuration and in ofp_table_mod messages to configure table behavior. */
enum ofp_table_config {
OFPTC_TABLE_MISS_CONTROLLER = 0, /* Send to controller. */
OFPTC_TABLE_MISS_CONTINUE = 1 << 0, /* Continue to the next table in the
pipeline (OpenFlow 1.0
behavior). */
OFPTC_TABLE_MISS_DROP = 1 << 1, /* Drop the packet. */
OFPTC_TABLE_MISS_MASK = 3
};
/* 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. */
};
/* Configure/Modify behavior of a flow table */
struct ofp_table_mod {
struct ofp_header header;
uint8_t table_id; /* ID of the table, OFPTT_ALL indicates all tables */
uint8_t pad[3]; /* Pad to 32 bits */
uint32_t config; /* Bitmap of OFPTC_* flags */
};
OFP_ASSERT(sizeof(struct ofp_table_mod) == 16);
/* Capabilities supported by the datapath. */
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, /* Group statistics. */
OFPC_IP_REASM = 1 << 5, /* Can reassemble IP fragments. */
OFPC_QUEUE_STATS = 1 << 6, /* Queue statistics. */
OFPC_PORT_BLOCKED = 1 << 8 /* Switch will block looping ports. */
};
/* 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. */
};
/* 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. */
OFPPS_BLOCKED = 1 << 1, /* Port is blocked */
OFPPS_LIVE = 1 << 2, /* Live for Fast Failover Group. */
};
/* Features of 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. */
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. */
};
/* Description of a port */
struct ofp_port {
uint32_t port_no;
uint8_t pad[4];
uint8_t hw_addr[OFP_ETH_ALEN];
uint8_t pad2[2]; /* Align to 64 bits. */
char name[OFP_MAX_PORT_NAME_LEN]; /* Null-terminated */
uint32_t config; /* Bitmap of OFPPC_* flags. */
uint32_t state; /* Bitmap of OFPPS_* flags. */
/* Bitmaps of OFPPF_* that describe features. All bits zeroed if
* unsupported or unavailable. */
uint32_t curr; /* Current features. */
uint32_t advertised; /* Features being advertised by the port. */
uint32_t supported; /* Features supported by the port. */
uint32_t peer; /* Features advertised by peer. */
uint32_t curr_speed; /* Current port bitrate in kbps. */
uint32_t max_speed; /* Max port bitrate in kbps */
};
OFP_ASSERT(sizeof(struct ofp_port) == 64);
/* Switch features. */
struct ofp_switch_features {
struct ofp_header header;
uint64_t datapath_id; /* Datapath unique ID. The lower 48-bits are for
a MAC address, while the upper 16-bits are
implementer-defined. */
uint32_t n_buffers; /* Max packets buffered at once. */
uint8_t n_tables; /* Number of tables supported by datapath. */
uint8_t pad[3]; /* Align to 64-bits. */
/* Features. */
uint32_t capabilities; /* Bitmap of support "ofp_capabilities". */
uint32_t reserved;
/* Port info.*/
struct ofp_port ports[0]; /* Port definitions. The number of ports
is inferred from the length field in
the header. */
};
OFP_ASSERT(sizeof(struct ofp_switch_features) == 32);
/* What changed about the physical port */
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. */
};
/* A physical port has changed in the datapath */
struct ofp_port_status {
struct ofp_header header;
uint8_t reason; /* One of OFPPR_*. */
uint8_t pad[7]; /* Align to 64-bits. */
struct ofp_port desc;
};
OFP_ASSERT(sizeof(struct ofp_port_status) == 80);
/* Modify behavior of the physical port */
struct ofp_port_mod {
struct ofp_header header;
uint32_t port_no;
uint8_t pad[4];
uint8_t hw_addr[OFP_ETH_ALEN]; /* The hardware address is not
configurable. This is used to
sanity-check the request, so it must
be the same as returned in an
ofp_port struct. */
uint8_t pad2[2]; /* Pad to 64 bits. */
uint32_t config; /* Bitmap of OFPPC_* flags. */
uint32_t mask; /* Bitmap of OFPPC_* flags to be changed. */
uint32_t advertise; /* Bitmap of OFPPF_*. Zero all bits to prevent
any action taking place. */
uint8_t pad3[4]; /* Pad to 64 bits. */
};
OFP_ASSERT(sizeof(struct ofp_port_mod) == 40);
/* ## -------------------------- ## */
/* ## OpenFlow Extensible Match. ## */
/* ## -------------------------- ## */
/* 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, /* Deprecated. */
OFPMT_OXM = 1, /* OpenFlow Extensible Match */
};
/* Fields to match against flows */
struct ofp_match {
uint16_t type; /* One of OFPMT_* */
uint16_t length; /* Length of ofp_match (excluding padding) */
/* Followed by:
* - Exactly (length - 4) (possibly 0) bytes containing OXM TLVs, then
* - Exactly ((length + 7)/8*8 - length) (between 0 and 7) bytes of
* all-zero bytes
* In summary, ofp_match is padded as needed, to make its overall size
* a multiple of 8, to preserve alignement in structures using it.
*/
uint8_t oxm_fields[4]; /* OXMs start here - Make compiler happy */
};
OFP_ASSERT(sizeof(struct ofp_match) == 8);
/* Components of a OXM TLV header. */
#define OXM_HEADER__(CLASS, FIELD, HASMASK, LENGTH) \
(((CLASS) << 16) | ((FIELD) << 9) | ((HASMASK) << 8) | (LENGTH))
#define OXM_HEADER(CLASS, FIELD, LENGTH) \
OXM_HEADER__(CLASS, FIELD, 0, LENGTH)
#define OXM_HEADER_W(CLASS, FIELD, LENGTH) \
OXM_HEADER__(CLASS, FIELD, 1, (LENGTH) * 2)
#define OXM_CLASS(HEADER) ((HEADER) >> 16)
#define OXM_FIELD(HEADER) (((HEADER) >> 9) & 0x7f)
#define OXM_TYPE(HEADER) (((HEADER) >> 9) & 0x7fffff)
#define OXM_HASMASK(HEADER) (((HEADER) >> 8) & 1)
#define OXM_LENGTH(HEADER) ((HEADER) & 0xff)
#define OXM_MAKE_WILD_HEADER(HEADER) \
OXM_HEADER_W(OXM_CLASS(HEADER), OXM_FIELD(HEADER), OXM_LENGTH(HEADER))
/* OXM Class IDs.
* The high order bit differentiate reserved classes from member classes.
* Classes 0x0000 to 0x7FFF are member classes, allocated by ONF.
* Classes 0x8000 to 0xFFFE are reserved classes, reserved for standardisation.
*/
enum ofp_oxm_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 */
};
/* OXM Flow match field types for OpenFlow basic class. */
enum 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. */
};
#define OFPXMT_OFB_ALL ((UINT64_C(1) << 36) - 1)
/* OpenFlow port on which the packet was received.
* May be a physical port, a logical port, or the reserved port OFPP_LOCAL
*
* Prereqs: None.
*
* Format: 32-bit integer in network byte order.
*
* Masking: Not maskable. */
#define OXM_OF_IN_PORT OXM_HEADER (0x8000, OFPXMT_OFB_IN_PORT, 4)
/* Physical port on which the packet was received.
*
* Consider a packet received on a tunnel interface defined over a link
* aggregation group (LAG) with two physical port members. If the tunnel
* interface is the logical port bound to OpenFlow. In this case,
* OFPXMT_OF_IN_PORT is the tunnel's port number and OFPXMT_OF_IN_PHY_PORT is
* the physical port number of the LAG on which the tunnel is configured.
*
* When a packet is received directly on a physical port and not processed by a
* logical port, OFPXMT_OF_IN_PORT and OFPXMT_OF_IN_PHY_PORT have the same
* value.
*
* This field is usually not available in a regular match and only available
* in ofp_packet_in messages when it's different from OXM_OF_IN_PORT.
*
* Prereqs: OXM_OF_IN_PORT must be present.
*
* Format: 32-bit integer in network byte order.
*
* Masking: Not maskable. */
#define OXM_OF_IN_PHY_PORT OXM_HEADER (0x8000, OFPXMT_OFB_IN_PHY_PORT, 4)
/* Table metadata.
*
* Prereqs: None.
*
* Format: 64-bit integer in network byte order.
*
* Masking: Arbitrary masks.
*/
#define OXM_OF_METADATA OXM_HEADER (0x8000, OFPXMT_OFB_METADATA, 8)
#define OXM_OF_METADATA_W OXM_HEADER_W(0x8000, OFPXMT_OFB_METADATA, 8)
/* Source or destination address in Ethernet header.
*
* Prereqs: None.
*
* Format: 48-bit Ethernet MAC address.
*
* Masking: Arbitrary masks. */
#define OXM_OF_ETH_DST OXM_HEADER (0x8000, OFPXMT_OFB_ETH_DST, 6)
#define OXM_OF_ETH_DST_W OXM_HEADER_W(0x8000, OFPXMT_OFB_ETH_DST, 6)
#define OXM_OF_ETH_SRC OXM_HEADER (0x8000, OFPXMT_OFB_ETH_SRC, 6)
#define OXM_OF_ETH_SRC_W OXM_HEADER_W(0x8000, OFPXMT_OFB_ETH_SRC, 6)
/* Packet's Ethernet type.
*
* Prereqs: None.
*
* Format: 16-bit integer in network byte order.
*
* Masking: Not maskable. */
#define OXM_OF_ETH_TYPE OXM_HEADER (0x8000, OFPXMT_OFB_ETH_TYPE, 2)
/* The VLAN id is 12-bits, so we can use the entire 16 bits to indicate
* special conditions.
*/
enum ofp_vlan_id {
OFPVID_PRESENT = 0x1000, /* Bit that indicate that a VLAN id is set */
OFPVID_NONE = 0x0000, /* No VLAN id was set. */
};
/* Define for compatibility */
#define OFP_VLAN_NONE OFPVID_NONE
/* 802.1Q VID.
*
* For a packet with an 802.1Q header, this is the VLAN-ID (VID) from the
* outermost tag, with the CFI bit forced to 1. For a packet with no 802.1Q
* header, this has value OFPVID_NONE.
*
* Prereqs: None.
*
* Format: 16-bit integer in network byte order with bit 13 indicating
* presence of VLAN header and 3 most-significant bits forced to 0.
* Only the lower 13 bits have meaning.
*
* Masking: Arbitrary masks.
*
* This field can be used in various ways:
*
* - If it is not constrained at all, the nx_match matches packets without
* an 802.1Q header or with an 802.1Q header that has any VID value.
*
* - Testing for an exact match with 0x0 matches only packets without
* an 802.1Q header.
*
* - Testing for an exact match with a VID value with CFI=1 matches packets
* that have an 802.1Q header with a specified VID.
*
* - Testing for an exact match with a nonzero VID value with CFI=0 does
* not make sense. The switch may reject this combination.
*
* - Testing with nxm_value=0, nxm_mask=0x0fff matches packets with no 802.1Q
* header or with an 802.1Q header with a VID of 0.
*
* - Testing with nxm_value=0x1000, nxm_mask=0x1000 matches packets with
* an 802.1Q header that has any VID value.
*/
#define OXM_OF_VLAN_VID OXM_HEADER (0x8000, OFPXMT_OFB_VLAN_VID, 2)
#define OXM_OF_VLAN_VID_W OXM_HEADER_W(0x8000, OFPXMT_OFB_VLAN_VID, 2)
/* 802.1Q PCP.
*
* For a packet with an 802.1Q header, this is the VLAN-PCP from the
* outermost tag. For a packet with no 802.1Q header, this has value
* 0.
*
* Prereqs: OXM_OF_VLAN_VID must be different from OFPVID_NONE.
*
* Format: 8-bit integer with 5 most-significant bits forced to 0.
* Only the lower 3 bits have meaning.
*
* Masking: Not maskable.
*/
#define OXM_OF_VLAN_PCP OXM_HEADER (0x8000, OFPXMT_OFB_VLAN_PCP, 1)
/* The Diff Serv Code Point (DSCP) bits of the IP header.
* Part of the IPv4 ToS field or the IPv6 Traffic Class field.
*
* Prereqs: OXM_OF_ETH_TYPE must be either 0x0800 or 0x86dd.
*
* Format: 8-bit integer with 2 most-significant bits forced to 0.
* Only the lower 6 bits have meaning.
*
* Masking: Not maskable. */
#define OXM_OF_IP_DSCP OXM_HEADER (0x8000, OFPXMT_OFB_IP_DSCP, 1)
/* The ECN bits of the IP header.
* Part of the IPv4 ToS field or the IPv6 Traffic Class field.
*
* Prereqs: OXM_OF_ETH_TYPE must be either 0x0800 or 0x86dd.
*
* Format: 8-bit integer with 6 most-significant bits forced to 0.
* Only the lower 2 bits have meaning.
*
* Masking: Not maskable. */
#define OXM_OF_IP_ECN OXM_HEADER (0x8000, OFPXMT_OFB_IP_ECN, 1)
/* The "protocol" byte in the IP header.
*
* Prereqs: OXM_OF_ETH_TYPE must be either 0x0800 or 0x86dd.
*
* Format: 8-bit integer.
*
* Masking: Not maskable. */
#define OXM_OF_IP_PROTO OXM_HEADER (0x8000, OFPXMT_OFB_IP_PROTO, 1)
/* The source or destination address in the IP header.
*
* Prereqs: OXM_OF_ETH_TYPE must match 0x0800 exactly.
*
* Format: 32-bit integer in network byte order.
*
* Masking: Arbitrary masks.
*/
#define OXM_OF_IPV4_SRC OXM_HEADER (0x8000, OFPXMT_OFB_IPV4_SRC, 4)
#define OXM_OF_IPV4_SRC_W OXM_HEADER_W(0x8000, OFPXMT_OFB_IPV4_SRC, 4)
#define OXM_OF_IPV4_DST OXM_HEADER (0x8000, OFPXMT_OFB_IPV4_DST, 4)
#define OXM_OF_IPV4_DST_W OXM_HEADER_W(0x8000, OFPXMT_OFB_IPV4_DST, 4)
/* The source or destination port in the TCP header.
*
* Prereqs:
* OXM_OF_ETH_TYPE must be either 0x0800 or 0x86dd.
* OXM_OF_IP_PROTO must match 6 exactly.
*
* Format: 16-bit integer in network byte order.
*
* Masking: Not maskable. */
#define OXM_OF_TCP_SRC OXM_HEADER (0x8000, OFPXMT_OFB_TCP_SRC, 2)
#define OXM_OF_TCP_DST OXM_HEADER (0x8000, OFPXMT_OFB_TCP_DST, 2)
/* The source or destination port in the UDP header.
*
* Prereqs:
* OXM_OF_ETH_TYPE must match either 0x0800 or 0x86dd.
* OXM_OF_IP_PROTO must match 17 exactly.
*
* Format: 16-bit integer in network byte order.
*
* Masking: Not maskable. */
#define OXM_OF_UDP_SRC OXM_HEADER (0x8000, OFPXMT_OFB_UDP_SRC, 2)
#define OXM_OF_UDP_DST OXM_HEADER (0x8000, OFPXMT_OFB_UDP_DST, 2)
/* The source or destination port in the SCTP header.
*
* Prereqs:
* OXM_OF_ETH_TYPE must match either 0x0800 or 0x86dd.
* OXM_OF_IP_PROTO must match 132 exactly.
*
* Format: 16-bit integer in network byte order.
*
* Masking: Not maskable. */
#define OXM_OF_SCTP_SRC OXM_HEADER (0x8000, OFPXMT_OFB_SCTP_SRC, 2)
#define OXM_OF_SCTP_DST OXM_HEADER (0x8000, OFPXMT_OFB_SCTP_DST, 2)
/* The type or code in the ICMP header.
*
* Prereqs:
* OXM_OF_ETH_TYPE must match 0x0800 exactly.
* OXM_OF_IP_PROTO must match 1 exactly.
*
* Format: 8-bit integer.
*
* Masking: Not maskable. */
#define OXM_OF_ICMPV4_TYPE OXM_HEADER (0x8000, OFPXMT_OFB_ICMPV4_TYPE, 1)
#define OXM_OF_ICMPV4_CODE OXM_HEADER (0x8000, OFPXMT_OFB_ICMPV4_CODE, 1)
/* ARP opcode.
*
* For an Ethernet+IP ARP packet, the opcode in the ARP header. Always 0
* otherwise.
*
* Prereqs: OXM_OF_ETH_TYPE must match 0x0806 exactly.
*
* Format: 16-bit integer in network byte order.
*
* Masking: Not maskable. */
#define OXM_OF_ARP_OP OXM_HEADER (0x8000, OFPXMT_OFB_ARP_OP, 2)
/* For an Ethernet+IP ARP packet, the source or target protocol address
* in the ARP header. Always 0 otherwise.
*
* Prereqs: OXM_OF_ETH_TYPE must match 0x0806 exactly.
*
* Format: 32-bit integer in network byte order.
*
* Masking: Arbitrary masks.
*/
#define OXM_OF_ARP_SPA OXM_HEADER (0x8000, OFPXMT_OFB_ARP_SPA, 4)
#define OXM_OF_ARP_SPA_W OXM_HEADER_W(0x8000, OFPXMT_OFB_ARP_SPA, 4)
#define OXM_OF_ARP_TPA OXM_HEADER (0x8000, OFPXMT_OFB_ARP_TPA, 4)
#define OXM_OF_ARP_TPA_W OXM_HEADER_W(0x8000, OFPXMT_OFB_ARP_TPA, 4)
/* For an Ethernet+IP ARP packet, the source or target hardware address
* in the ARP header. Always 0 otherwise.
*
* Prereqs: OXM_OF_ETH_TYPE must match 0x0806 exactly.
*
* Format: 48-bit Ethernet MAC address.
*
* Masking: Not maskable. */
#define OXM_OF_ARP_SHA OXM_HEADER (0x8000, OFPXMT_OFB_ARP_SHA, 6)
#define OXM_OF_ARP_THA OXM_HEADER (0x8000, OFPXMT_OFB_ARP_THA, 6)
/* The source or destination address in the IPv6 header.
*
* Prereqs: OXM_OF_ETH_TYPE must match 0x86dd exactly.
*
* Format: 128-bit IPv6 address.
*
* Masking: Arbitrary masks.
*/
#define OXM_OF_IPV6_SRC OXM_HEADER (0x8000, OFPXMT_OFB_IPV6_SRC, 16)
#define OXM_OF_IPV6_SRC_W OXM_HEADER_W(0x8000, OFPXMT_OFB_IPV6_SRC, 16)
#define OXM_OF_IPV6_DST OXM_HEADER (0x8000, OFPXMT_OFB_IPV6_DST, 16)
#define OXM_OF_IPV6_DST_W OXM_HEADER_W(0x8000, OFPXMT_OFB_IPV6_DST, 16)
/* The IPv6 Flow Label
*
* Prereqs:
* OXM_OF_ETH_TYPE must match 0x86dd exactly
*
* Format: 32-bit integer with 12 most-significant bits forced to 0.
* Only the lower 20 bits have meaning.
*
* Masking: Maskable. */
#define OXM_OF_IPV6_FLABEL OXM_HEADER (0x8000, OFPXMT_OFB_IPV6_FLABEL, 4)
/* The type or code in the ICMPv6 header.
*
* Prereqs:
* OXM_OF_ETH_TYPE must match 0x86dd exactly.
* OXM_OF_IP_PROTO must match 58 exactly.
*
* Format: 8-bit integer.
*
* Masking: Not maskable. */
#define OXM_OF_ICMPV6_TYPE OXM_HEADER (0x8000, OFPXMT_OFB_ICMPV6_TYPE, 1)
#define OXM_OF_ICMPV6_CODE OXM_HEADER (0x8000, OFPXMT_OFB_ICMPV6_CODE, 1)
/* The target address in an IPv6 Neighbor Discovery message.
*
* Prereqs:
* OXM_OF_ETH_TYPE must match 0x86dd exactly.
* OXM_OF_IP_PROTO must match 58 exactly.
* OXM_OF_ICMPV6_TYPE must be either 135 or 136.
*
* Format: 128-bit IPv6 address.
*
* Masking: Not maskable. */
#define OXM_OF_IPV6_ND_TARGET OXM_HEADER (0x8000, OFPXMT_OFB_IPV6_ND_TARGET, 16)
/* The source link-layer address option in an IPv6 Neighbor Discovery
* message.
*
* Prereqs:
* OXM_OF_ETH_TYPE must match 0x86dd exactly.
* OXM_OF_IP_PROTO must match 58 exactly.
* OXM_OF_ICMPV6_TYPE must be exactly 135.
*
* Format: 48-bit Ethernet MAC address.
*
* Masking: Not maskable. */
#define OXM_OF_IPV6_ND_SLL OXM_HEADER (0x8000, OFPXMT_OFB_IPV6_ND_SLL, 6)
/* The target link-layer address option in an IPv6 Neighbor Discovery
* message.
*
* Prereqs:
* OXM_OF_ETH_TYPE must match 0x86dd exactly.
* OXM_OF_IP_PROTO must match 58 exactly.
* OXM_OF_ICMPV6_TYPE must be exactly 136.
*
* Format: 48-bit Ethernet MAC address.
*
* Masking: Not maskable. */
#define OXM_OF_IPV6_ND_TLL OXM_HEADER (0x8000, OFPXMT_OFB_IPV6_ND_TLL, 6)
/* The LABEL in the first MPLS shim header.
*
* Prereqs:
* OXM_OF_ETH_TYPE must match 0x8847 or 0x8848 exactly.
*
* Format: 32-bit integer in network byte order with 12 most-significant
* bits forced to 0. Only the lower 20 bits have meaning.
*
* Masking: Not maskable. */
#define OXM_OF_MPLS_LABEL OXM_HEADER (0x8000, OFPXMT_OFB_MPLS_LABEL, 4)
/* The TC in the first MPLS shim header.
*
* Prereqs:
* OXM_OF_ETH_TYPE must match 0x8847 or 0x8848 exactly.
*
* Format: 8-bit integer with 5 most-significant bits forced to 0.
* Only the lower 3 bits have meaning.
*
* Masking: Not maskable. */
#define OXM_OF_MPLS_TC OXM_HEADER (0x8000, OFPXMT_OFB_MPLS_TC, 1)
/* Header for OXM experimenter match fields. */
struct ofp_oxm_experimenter_header {
uint32_t oxm_header; /* oxm_class = OFPXMC_EXPERIMENTER */
uint32_t experimenter; /* Experimenter ID which takes the same
form as in struct ofp_experimenter_header. */
};
OFP_ASSERT(sizeof(struct ofp_oxm_experimenter_header) == 8);
/* ## ----------------- ## */
/* ## OpenFlow Actions. ## */
/* ## ----------------- ## */
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
};
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. */
};
/* Action structure for OFPAT_OUTPUT, which sends packets out 'port'.
* When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max
* number of bytes to send. A 'max_len' of zero means no bytes of the
* packet should be sent. A 'max_len' of OFPCML_NO_BUFFER means that
* the packet is not buffered and the complete packet is to be sent to
* the controller. */
struct ofp_action_output {
uint16_t type; /* OFPAT_OUTPUT. */
uint16_t len; /* Length is 16. */
uint32_t port; /* Output port. */
uint16_t max_len; /* Max length to send to controller. */
uint8_t pad[6]; /* Pad to 64 bits. */
};
OFP_ASSERT(sizeof(struct ofp_action_output) == 16);
/* Action structure for OFPAT_SET_MPLS_TTL. */
struct ofp_action_mpls_ttl {
uint16_t type; /* OFPAT_SET_MPLS_TTL. */
uint16_t len; /* Length is 8. */
uint8_t mpls_ttl; /* MPLS TTL */
uint8_t pad[3];
};
OFP_ASSERT(sizeof(struct ofp_action_mpls_ttl) == 8);
/* Action structure for OFPAT_PUSH_VLAN/MPLS. */
struct ofp_action_push {
uint16_t type; /* OFPAT_PUSH_VLAN/MPLS. */
uint16_t len; /* Length is 8. */
uint16_t ethertype; /* Ethertype */
uint8_t pad[2];
};
OFP_ASSERT(sizeof(struct ofp_action_push) == 8);
/* Action structure for OFPAT_POP_MPLS. */
struct ofp_action_pop_mpls {
uint16_t type; /* OFPAT_POP_MPLS. */
uint16_t len; /* Length is 8. */
uint16_t ethertype; /* Ethertype */
uint8_t pad[2];
};
OFP_ASSERT(sizeof(struct ofp_action_pop_mpls) == 8);
/* Action structure for OFPAT_GROUP. */
struct ofp_action_group {
uint16_t type; /* OFPAT_GROUP. */
uint16_t len; /* Length is 8. */
uint32_t group_id; /* Group identifier. */
};
OFP_ASSERT(sizeof(struct ofp_action_group) == 8);
/* Action structure for OFPAT_SET_NW_TTL. */
struct ofp_action_nw_ttl {
uint16_t type; /* OFPAT_SET_NW_TTL. */
uint16_t len; /* Length is 8. */
uint8_t nw_ttl; /* IP TTL */
uint8_t pad[3];
};
OFP_ASSERT(sizeof(struct ofp_action_nw_ttl) == 8);
/* Action structure for OFPAT_SET_FIELD. */
struct ofp_action_set_field {
uint16_t type; /* OFPAT_SET_FIELD. */
uint16_t len; /* Length is padded to 64 bits. */
/* Followed by:
* - Exactly oxm_len bytes containing a single OXM TLV, then
* - Exactly ((oxm_len + 4) + 7)/8*8 - (oxm_len + 4) (between 0 and 7)
* bytes of all-zero bytes
*/
uint8_t field[4]; /* OXM TLV - Make compiler happy */
};
OFP_ASSERT(sizeof(struct ofp_action_set_field) == 8);
/* Action header for OFPAT_EXPERIMENTER.
* The rest of the body is experimenter-defined. */
struct ofp_action_experimenter_header {
uint16_t type; /* OFPAT_EXPERIMENTER. */
uint16_t len; /* Length is a multiple of 8. */
uint32_t experimenter; /* Experimenter ID which takes the same
form as in struct
ofp_experimenter_header. */
};
OFP_ASSERT(sizeof(struct ofp_action_experimenter_header) == 8);
/* Action header that is common to all actions. The length includes the
* header and any padding used to make the action 64-bit aligned.
* NB: The length of an action *must* always be a multiple of eight. */
struct ofp_action_header {
uint16_t type; /* One of OFPAT_*. */
uint16_t len; /* Length of action, including this
header. This is the length of action,
including any padding to make it
64-bit aligned. */
uint8_t pad[4];
};
OFP_ASSERT(sizeof(struct ofp_action_header) == 8);
/* ## ---------------------- ## */
/* ## OpenFlow Instructions. ## */
/* ## ---------------------- ## */
enum ofp_instruction_type {
OFPIT_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 */
};
/* Generic ofp_instruction structure */
struct ofp_instruction {
uint16_t type; /* Instruction type */
uint16_t len; /* Length of this struct in bytes. */
uint8_t pad[4]; /* Align to 64-bits */
};
OFP_ASSERT(sizeof(struct ofp_instruction) == 8);
/* Instruction structure for OFPIT_GOTO_TABLE */
struct ofp_instruction_goto_table {
uint16_t type; /* OFPIT_GOTO_TABLE */
uint16_t len; /* Length of this struct in bytes. */
uint8_t table_id; /* Set next table in the lookup pipeline */
uint8_t pad[3]; /* Pad to 64 bits. */
};
OFP_ASSERT(sizeof(struct ofp_instruction_goto_table) == 8);
/* Instruction structure for OFPIT_WRITE_METADATA */
struct ofp_instruction_write_metadata {
uint16_t type; /* OFPIT_WRITE_METADATA */
uint16_t len; /* Length of this struct in bytes. */
uint8_t pad[4]; /* Align to 64-bits */
uint64_t metadata; /* Metadata value to write */
uint64_t metadata_mask; /* Metadata write bitmask */
};
OFP_ASSERT(sizeof(struct ofp_instruction_write_metadata) == 24);
/* Instruction structure for OFPIT_WRITE/APPLY/CLEAR_ACTIONS */
struct ofp_instruction_actions {
uint16_t type; /* One of OFPIT_*_ACTIONS */
uint16_t len; /* Length of this struct in bytes. */
uint8_t pad[4]; /* Align to 64-bits */
struct ofp_action_header actions[0]; /* Actions associated with
OFPIT_WRITE_ACTIONS and
OFPIT_APPLY_ACTIONS */
};
OFP_ASSERT(sizeof(struct ofp_instruction_actions) == 8);
/* Instruction structure for experimental instructions */
struct ofp_instruction_experimenter {
uint16_t type; /* OFPIT_EXPERIMENTER */
uint16_t len; /* Length of this struct in bytes */
uint32_t experimenter; /* Experimenter ID which takes the same form
as in struct ofp_experimenter_header. */
/* Experimenter-defined arbitrary additional data. */
};
OFP_ASSERT(sizeof(struct ofp_instruction_experimenter) == 8);
/* ## --------------------------- ## */
/* ## OpenFlow Flow Modification. ## */
/* ## --------------------------- ## */
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 and
priority. */
OFPFC_DELETE = 3, /* Delete all matching flows. */
OFPFC_DELETE_STRICT = 4, /* Delete entry strictly matching wildcards and
priority. */
};
/* 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
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_COUNTS = 1 << 2 /* Reset flow packet and byte counts. */
};
/* Flow setup and teardown (controller -> datapath). */
struct ofp_flow_mod {
struct ofp_header header;
uint64_t cookie; /* Opaque controller-issued identifier. */
uint64_t cookie_mask; /* Mask used to restrict the cookie bits
that must match when the command is
OFPFC_MODIFY* or OFPFC_DELETE*. A value
of 0 indicates no restriction. */
/* Flow actions. */
uint8_t table_id; /* ID of the table to put the flow in.
For OFPFC_DELETE_* commands, OFPTT_ALL
can also be used to delete matching
flows from all tables. */
uint8_t command; /* One of OFPFC_*. */
uint16_t idle_timeout; /* Idle time before discarding (seconds). */
uint16_t hard_timeout; /* Max time before discarding (seconds). */
uint16_t priority; /* Priority level of flow entry. */
uint32_t buffer_id; /* Buffered packet to apply to, or
OFP_NO_BUFFER.
Not meaningful for OFPFC_DELETE*. */
uint32_t out_port; /* For OFPFC_DELETE* commands, require
matching entries to include this as an
output port. A value of OFPP_ANY
indicates no restriction. */
uint32_t out_group; /* For OFPFC_DELETE* commands, require
matching entries to include this as an
output group. A value of OFPG_ANY
indicates no restriction. */
uint16_t flags; /* One of OFPFF_*. */
uint8_t pad[2];
struct ofp_match match; /* Fields to match. Variable size. */
//struct ofp_instruction instructions[0]; /* Instruction set */
};
OFP_ASSERT(sizeof(struct ofp_flow_mod) == 56);
/* 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, /* Represents all groups for group delete
commands. */
OFPG_ANY = 0xffffffff /* Wildcard group used only for flow stats
requests. Selects all flows regardless of
group (including flows with no group).
*/
};
/* Group commands */
enum ofp_group_mod_command {
OFPGC_ADD = 0, /* New group. */
OFPGC_MODIFY = 1, /* Modify all matching groups. */
OFPGC_DELETE = 2, /* Delete all matching groups. */
};
/* Bucket for use in groups. */
struct ofp_bucket {
uint16_t len; /* Length the bucket in bytes, including
this header and any padding to make it
64-bit aligned. */
uint16_t weight; /* Relative weight of bucket. Only
defined for select groups. */
uint32_t watch_port; /* Port whose state affects whether this
bucket is live. Only required for fast
failover groups. */
uint32_t watch_group; /* Group whose state affects whether this
bucket is live. Only required for fast
failover groups. */
uint8_t pad[4];
struct ofp_action_header actions[0]; /* The action length is inferred
from the length field in the
header. */
};
OFP_ASSERT(sizeof(struct ofp_bucket) == 16);
/* Group setup and teardown (controller -> datapath). */
struct ofp_group_mod {
struct ofp_header header;
uint16_t command; /* One of OFPGC_*. */
uint8_t type; /* One of OFPGT_*. */
uint8_t pad; /* Pad to 64 bits. */
uint32_t group_id; /* Group identifier. */
struct ofp_bucket buckets[0]; /* The length of the bucket array is inferred
from the length field in the header. */
};
OFP_ASSERT(sizeof(struct ofp_group_mod) == 16);
/* Group types. Values in the range [128, 255] are reserved for experimental
* use. */
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. */
};
/* Special buffer-id to indicate 'no buffer' */
#define OFP_NO_BUFFER 0xffffffff
/* Send packet (controller -> datapath). */
struct ofp_packet_out {
struct ofp_header header;
uint32_t buffer_id; /* ID assigned by datapath (OFP_NO_BUFFER
if none). */
uint32_t in_port; /* Packet's input port or OFPP_CONTROLLER. */
uint16_t actions_len; /* Size of action array in bytes. */
uint8_t pad[6];
struct ofp_action_header actions[0]; /* Action list. */
/* uint8_t data[0]; */ /* Packet data. The length is inferred
from the length field in the header.
(Only meaningful if buffer_id == -1.) */
};
OFP_ASSERT(sizeof(struct ofp_packet_out) == 24);
/* Why is this packet being sent to the controller? */
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 */
};
/* Packet received on port (datapath -> controller). */
struct ofp_packet_in {
struct ofp_header header;
uint32_t buffer_id; /* ID assigned by datapath. */
uint16_t total_len; /* Full length of frame. */
uint8_t reason; /* Reason packet is being sent (one of OFPR_*) */
uint8_t table_id; /* ID of the table that was looked up */
struct ofp_match match; /* Packet metadata. Variable size. */
/* Followed by:
* - Exactly 2 all-zero padding bytes, then
* - An Ethernet frame whose length is inferred from header.length.
* The padding bytes preceding the Ethernet frame ensure that the IP
* header (if any) following the Ethernet header is 32-bit aligned.
*/
//uint8_t pad[2]; /* Align to 64 bit + 16 bit */
//uint8_t data[0]; /* Ethernet frame */
};
OFP_ASSERT(sizeof(struct ofp_packet_in) == 24);
/* Why was this flow removed? */
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. */
};
/* Flow removed (datapath -> controller). */
struct ofp_flow_removed {
struct ofp_header header;
uint64_t cookie; /* Opaque controller-issued identifier. */
uint16_t priority; /* Priority level of flow entry. */
uint8_t reason; /* One of OFPRR_*. */
uint8_t table_id; /* ID of the table */
uint32_t duration_sec; /* Time flow was alive in seconds. */
uint32_t duration_nsec; /* Time flow was alive in nanoseconds beyond
duration_sec. */
uint16_t idle_timeout; /* Idle timeout from original flow mod. */
uint16_t hard_timeout; /* Hard timeout from original flow mod. */
uint64_t packet_count;
uint64_t byte_count;
struct ofp_match match; /* Description of fields. Variable size. */
};
OFP_ASSERT(sizeof(struct ofp_flow_removed) == 56);
/* Values for 'type' in ofp_error_message. These values are immutable: they
* will not change in future versions of the protocol (although new values may
* be added). */
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, /* Port mod request 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. */
};
/* ofp_error_msg 'code' values for OFPET_HELLO_FAILED. 'data' contains an
* ASCII text string that may give failure details. */
enum ofp_hello_failed_code {
OFPHFC_INCOMPATIBLE = 0, /* No compatible version. */
OFPHFC_EPERM = 1, /* Permissions error. */
};
/* ofp_error_msg 'code' values for OFPET_BAD_REQUEST. 'data' contains at least
* the first 64 bytes of the failed request. */
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_request.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. */
OFPBRC_BAD_PACKET = 12, /* Invalid packet in packet-out. */
};
/* ofp_error_msg 'code' values for OFPET_BAD_ACTION. 'data' contains at least
* the first 64 bytes of the failed request. */
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 for experimenter id. */
OFPBAC_BAD_OUT_PORT = 4, /* Problem validating output port. */
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. */
OFPBAC_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 argument in SET_FIELD action. */
};
/* ofp_error_msg 'code' values for OFPET_BAD_INSTRUCTION. 'data' contains at least
* the first 64 bytes of the failed request. */
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_LEN = 7, /* Length problem in instructions. */
OFPBIC_EPERM = 8, /* Permissions error. */
};
/* ofp_error_msg 'code' values for OFPET_BAD_MATCH. 'data' contains at least
* the first 64 bytes of the failed request. */
enum ofp_bad_match_code {
OFPBMC_BAD_TYPE = 0, /* Unsupported match type specified by the
match */
OFPBMC_BAD_LEN = 1, /* Length problem in match. */
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
address 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,
field is not dl-address or nw-address. */
OFPBMC_BAD_PREREQ = 9, /* A prerequisite was not met. */
OFPBMC_DUP_FIELD = 10, /* A field type was duplicated. */
OFPBMC_EPERM = 11, /* Permissions error. */
};
/* ofp_error_msg 'code' values for OFPET_FLOW_MOD_FAILED. 'data' contains
* at least the first 64 bytes of the failed request. */
enum ofp_flow_mod_failed_code {
OFPFMFC_UNKNOWN = 0, /* Unspecified error. */
OFPFMFC_TABLE_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. */
};
/* ofp_error_msg 'code' values for OFPET_GROUP_MOD_FAILED. 'data' contains
* at least the first 64 bytes of the failed request. */
enum ofp_group_mod_failed_code {
OFPGMFC_GROUP_EXISTS = 0, /* Group not added because a group ADD
attempted to replace an
already-present group. */
OFPGMFC_INVALID_GROUP = 1, /* Group not added because Group
specified is invalid. */
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. */
};
/* ofp_error_msg 'code' values for OFPET_PORT_MOD_FAILED. 'data' contains
* at least the first 64 bytes of the failed request. */
enum ofp_port_mod_failed_code {
OFPPMFC_BAD_PORT = 0, /* Specified port number 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. */
};
/* ofp_error_msg 'code' values for OFPET_TABLE_MOD_FAILED. 'data' contains
* at least the first 64 bytes of the failed request. */
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. */
};
/* ofp_error msg 'code' values for OFPET_QUEUE_OP_FAILED. 'data' contains
* at least the first 64 bytes of the failed request */
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. */
};
/* ofp_error_msg 'code' values for OFPET_SWITCH_CONFIG_FAILED. 'data' contains
* at least the first 64 bytes of the failed request. */
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. */
};
/* ofp_error_msg 'code' values for OFPET_ROLE_REQUEST_FAILED. 'data' contains
* at least the first 64 bytes of the failed request. */
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. */
};
/* OFPT_ERROR: Error message (datapath -> controller). */
struct ofp_error_msg {
struct ofp_header header;
uint16_t type;
uint16_t code;
uint8_t data[0]; /* Variable-length data. Interpreted based
on the type and code. No padding. */
};
OFP_ASSERT(sizeof(struct ofp_error_msg) == 12);
/* OFPET_EXPERIMENTER: Error message (datapath -> controller). */
struct ofp_error_experimenter_msg {
struct ofp_header header;
uint16_t type; /* OFPET_EXPERIMENTER. */
uint16_t exp_type; /* Experimenter defined. */
uint32_t experimenter; /* Experimenter ID which takes the same form
as in struct ofp_experimenter_header. */
uint8_t data[0]; /* Variable-length data. Interpreted based
on the type and code. No padding. */
};
OFP_ASSERT(sizeof(struct ofp_error_experimenter_msg) == 16);
enum ofp_stats_types {
/* Description of this OpenFlow switch.
* The request body is empty.
* The reply body is struct ofp_desc_stats. */
OFPST_DESC = 0,
/* Individual flow statistics.
* The request body is struct ofp_flow_stats_request.
* The reply body is an array of struct ofp_flow_stats. */
OFPST_FLOW = 1,
/* Aggregate flow statistics.
* The request body is struct ofp_aggregate_stats_request.
* The reply body is struct ofp_aggregate_stats_reply. */
OFPST_AGGREGATE = 2,
/* Flow table statistics.
* The request body is empty.
* The reply body is an array of struct ofp_table_stats. */
OFPST_TABLE = 3,
/* Port statistics.
* The request body is struct ofp_port_stats_request.
* The reply body is an array of struct ofp_port_stats. */
OFPST_PORT = 4,
/* Queue statistics for a port
* The request body is struct ofp_queue_stats_request.
* The reply body is an array of struct ofp_queue_stats */
OFPST_QUEUE = 5,
/* Group counter statistics.
* The request body is struct ofp_group_stats_request.
* The reply is an array of struct ofp_group_stats. */
OFPST_GROUP = 6,
/* Group description statistics.
* The request body is empty.
* The reply body is an array of struct ofp_group_desc_stats. */
OFPST_GROUP_DESC = 7,
/* Group features.
* The request body is empty.
* The reply body is struct ofp_group_features_stats. */
OFPST_GROUP_FEATURES = 8,
/* Experimenter extension.
* The request and reply bodies begin with
* struct ofp_experimenter_stats_header.
* The request and reply bodies are otherwise experimenter-defined. */
OFPST_EXPERIMENTER = 0xffff
};
struct ofp_stats_request {
struct ofp_header header;
uint16_t type; /* One of the OFPST_* constants. */
uint16_t flags; /* OFPSF_REQ_* flags (none yet defined). */
uint8_t pad[4];
uint8_t body[0]; /* Body of the request. */
};
OFP_ASSERT(sizeof(struct ofp_stats_request) == 16);
enum ofp_stats_reply_flags {
OFPSF_REPLY_MORE = 1 << 0 /* More replies to follow. */
};
struct ofp_stats_reply {
struct ofp_header header;
uint16_t type; /* One of the OFPST_* constants. */
uint16_t flags; /* OFPSF_REPLY_* flags. */
uint8_t pad[4];
uint8_t body[0]; /* Body of the reply. */
};
OFP_ASSERT(sizeof(struct ofp_stats_reply) == 16);
#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 datapath. */
};
OFP_ASSERT(sizeof(struct ofp_desc_stats) == 1056);
/* Body for ofp_stats_request of type OFPST_FLOW. */
struct ofp_flow_stats_request {
uint8_t table_id; /* ID of table to read (from ofp_table_stats),
OFPTT_ALL for all tables. */
uint8_t pad[3]; /* Align to 32 bits. */
uint32_t out_port; /* Require matching entries to include this
as an output port. A value of OFPP_ANY
indicates no restriction. */
uint32_t out_group; /* Require matching entries to include this
as an output group. A value of OFPG_ANY
indicates no restriction. */
uint8_t pad2[4]; /* Align to 64 bits. */
uint64_t cookie; /* Require matching entries to contain this
cookie value */
uint64_t cookie_mask; /* Mask used to restrict the cookie bits that
must match. A value of 0 indicates
no restriction. */
struct ofp_match match; /* Fields to match. Variable size. */
};
OFP_ASSERT(sizeof(struct ofp_flow_stats_request) == 40);
/* Body of reply to OFPST_FLOW request. */
struct ofp_flow_stats {
uint16_t length; /* Length of this entry. */
uint8_t table_id; /* ID of table flow came from. */
uint8_t pad;
uint32_t duration_sec; /* Time flow has been alive in seconds. */
uint32_t duration_nsec; /* Time flow has been alive in nanoseconds beyond
duration_sec. */
uint16_t priority; /* Priority of the entry. */
uint16_t idle_timeout; /* Number of seconds idle before expiration. */
uint16_t hard_timeout; /* Number of seconds before expiration. */
uint8_t pad2[6]; /* Align to 64-bits. */
uint64_t cookie; /* Opaque controller-issued identifier. */
uint64_t packet_count; /* Number of packets in flow. */
uint64_t byte_count; /* Number of bytes in flow. */
struct ofp_match match; /* Description of fields. Variable size. */
//struct ofp_instruction instructions[0]; /* Instruction set. */
};
OFP_ASSERT(sizeof(struct ofp_flow_stats) == 56);
/* Body for ofp_stats_request of type OFPST_AGGREGATE. */
struct ofp_aggregate_stats_request {
uint8_t table_id; /* ID of table to read (from ofp_table_stats)
OFPTT_ALL for all tables. */
uint8_t pad[3]; /* Align to 32 bits. */
uint32_t out_port; /* Require matching entries to include this
as an output port. A value of OFPP_ANY
indicates no restriction. */
uint32_t out_group; /* Require matching entries to include this
as an output group. A value of OFPG_ANY
indicates no restriction. */
uint8_t pad2[4]; /* Align to 64 bits. */
uint64_t cookie; /* Require matching entries to contain this
cookie value */
uint64_t cookie_mask; /* Mask used to restrict the cookie bits that
must match. A value of 0 indicates
no restriction. */
struct ofp_match match; /* Fields to match. Variable size. */
};
OFP_ASSERT(sizeof(struct ofp_aggregate_stats_request) == 40);
/* Body of reply to OFPST_AGGREGATE request. */
struct ofp_aggregate_stats_reply {
uint64_t packet_count; /* Number of packets in flows. */
uint64_t byte_count; /* Number of bytes in flows. */
uint32_t flow_count; /* Number of flows. */
uint8_t pad[4]; /* Align to 64 bits. */
};
OFP_ASSERT(sizeof(struct ofp_aggregate_stats_reply) == 24);
/* Body of reply to OFPST_TABLE request. */
struct ofp_table_stats {
uint8_t table_id; /* Identifier of table. Lower numbered tables
are consulted first. */
uint8_t pad[7]; /* Align to 64-bits. */
char name[OFP_MAX_TABLE_NAME_LEN];
uint64_t match; /* Bitmap of (1 << OFPXMT_*) that indicate the
fields the table can match on. */
uint64_t wildcards; /* Bitmap of (1 << OFPXMT_*) wildcards that are
supported by the table. */
uint32_t write_actions; /* Bitmap of OFPAT_* that are supported
by the table with OFPIT_WRITE_ACTIONS. */
uint32_t apply_actions; /* Bitmap of OFPAT_* that are supported
by the table with OFPIT_APPLY_ACTIONS. */
uint64_t write_setfields;/* Bitmap of (1 << OFPXMT_*) header fields that
can be set with OFPIT_WRITE_ACTIONS. */
uint64_t apply_setfields;/* Bitmap of (1 << OFPXMT_*) header fields that
can be set with OFPIT_APPLY_ACTIONS. */
uint64_t metadata_match; /* Bits of metadata table can match. */
uint64_t metadata_write; /* Bits of metadata table can write. */
uint32_t instructions; /* Bitmap of OFPIT_* values supported. */
uint32_t config; /* Bitmap of OFPTC_* values */
uint32_t max_entries; /* Max number of entries supported. */
uint32_t active_count; /* Number of active entries. */
uint64_t lookup_count; /* Number of packets looked up in table. */
uint64_t matched_count; /* Number of packets that hit table. */
};
OFP_ASSERT(sizeof(struct ofp_table_stats) == 128);
/* Body for ofp_stats_request of type OFPST_PORT. */
struct ofp_port_stats_request {
uint32_t port_no; /* OFPST_PORT message must request statistics
* either for a single port (specified in
* port_no) or for all ports (if port_no ==
* OFPP_ANY). */
uint8_t pad[4];
};
OFP_ASSERT(sizeof(struct ofp_port_stats_request) == 8);
/* Body of reply to OFPST_PORT request. If a counter is unsupported, set
* the field to all ones. */
struct ofp_port_stats {
uint32_t port_no;
uint8_t pad[4]; /* Align to 64-bits. */
uint64_t rx_packets; /* Number of received packets. */
uint64_t tx_packets; /* Number of transmitted packets. */
uint64_t rx_bytes; /* Number of received bytes. */
uint64_t tx_bytes; /* Number of transmitted bytes. */
uint64_t rx_dropped; /* Number of packets dropped by RX. */
uint64_t tx_dropped; /* Number of packets dropped by TX. */
uint64_t rx_errors; /* Number of receive errors. This is a super-set
of more specific receive errors and should be
greater than or equal to the sum of all
rx_*_err values. */
uint64_t tx_errors; /* Number of transmit errors. This is a super-set
of more specific transmit errors and should be
greater than or equal to the sum of all
tx_*_err values (none currently defined.) */
uint64_t rx_frame_err; /* Number of frame alignment errors. */
uint64_t rx_over_err; /* Number of packets with RX overrun. */
uint64_t rx_crc_err; /* Number of CRC errors. */
uint64_t collisions; /* Number of collisions. */
};
OFP_ASSERT(sizeof(struct ofp_port_stats) == 104);
/* Body of OFPST_GROUP request. */
struct ofp_group_stats_request {
uint32_t group_id; /* All groups if OFPG_ALL. */
uint8_t pad[4]; /* Align to 64 bits. */
};
OFP_ASSERT(sizeof(struct ofp_group_stats_request) == 8);
/* Used in group stats replies. */
struct ofp_bucket_counter {
uint64_t packet_count; /* Number of packets processed by bucket. */
uint64_t byte_count; /* Number of bytes processed by bucket. */
};
OFP_ASSERT(sizeof(struct ofp_bucket_counter) == 16);
/* Body of reply to OFPST_GROUP request. */
struct ofp_group_stats {
uint16_t length; /* Length of this entry. */
uint8_t pad[2]; /* Align to 64 bits. */
uint32_t group_id; /* Group identifier. */
uint32_t ref_count; /* Number of flows or groups that directly forward
to this group. */
uint8_t pad2[4]; /* Align to 64 bits. */
uint64_t packet_count; /* Number of packets processed by group. */
uint64_t byte_count; /* Number of bytes processed by group. */
struct ofp_bucket_counter bucket_stats[0];
};
OFP_ASSERT(sizeof(struct ofp_group_stats) == 32);
/* Body of reply to OFPST_GROUP_DESC request. */
struct ofp_group_desc_stats {
uint16_t length; /* Length of this entry. */
uint8_t type; /* One of OFPGT_*. */
uint8_t pad; /* Pad to 64 bits. */
uint32_t group_id; /* Group identifier. */
struct ofp_bucket buckets[0];
};
OFP_ASSERT(sizeof(struct ofp_group_desc_stats) == 8);
/* 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 */
};
/* Body of reply to OFPST_GROUP_FEATURES request. Group features. */
struct ofp_group_features_stats {
uint32_t types; /* Bitmap of OFPGT_* values supported. */
uint32_t capabilities; /* Bitmap of OFPGFC_* capability supported. */
uint32_t max_groups[4]; /* Maximum number of groups for each type. */
uint32_t actions[4]; /* Bitmaps of OFPAT_* that are supported. */
};
OFP_ASSERT(sizeof(struct ofp_group_features_stats) == 40);
/* Body for ofp_stats_request/reply of type OFPST_EXPERIMENTER. */
struct ofp_experimenter_stats_header {
uint32_t experimenter; /* Experimenter ID which takes the same form
as in struct ofp_experimenter_header. */
uint32_t exp_type; /* Experimenter defined. */
/* Experimenter-defined arbitrary additional data. */
};
OFP_ASSERT(sizeof(struct ofp_experimenter_stats_header) == 8);
/* Experimenter extension. */
struct ofp_experimenter_header {
struct ofp_header header; /* Type OFPT_EXPERIMENTER. */
uint32_t experimenter; /* Experimenter ID:
* - MSB 0: low-order bytes are IEEE OUI.
* - MSB != 0: defined by ONF. */
uint32_t exp_type; /* Experimenter defined. */
/* Experimenter-defined arbitrary additional data. */
};
OFP_ASSERT(sizeof(struct ofp_experimenter_header) == 16);
/* All ones is used to indicate all queues in a port (for stats retrieval). */
#define OFPQ_ALL 0xffffffff
/* Min rate > 1000 means not configured. */
#define OFPQ_MIN_RATE_UNCFG 0xffff
/* Max rate > 1000 means not configured. */
#define OFPQ_MAX_RATE_UNCFG 0xffff
enum ofp_queue_properties {
OFPQT_MIN_RATE = 1, /* Minimum datarate guaranteed. */
OFPQT_MAX_RATE = 2, /* Maximum datarate. */
OFPQT_EXPERIMENTER = 0xffff /* Experimenter defined property. */
};
/* Common description for a queue. */
struct ofp_queue_prop_header {
uint16_t property; /* One of OFPQT_. */
uint16_t len; /* Length of property, including this header. */
uint8_t pad[4]; /* 64-bit alignemnt. */
};
OFP_ASSERT(sizeof(struct ofp_queue_prop_header) == 8);
/* Min-Rate queue property description. */
struct ofp_queue_prop_min_rate {
struct ofp_queue_prop_header prop_header; /* prop: OFPQT_MIN, len: 16. */
uint16_t rate; /* In 1/10 of a percent; >1000 -> disabled. */
uint8_t pad[6]; /* 64-bit alignment */
};
OFP_ASSERT(sizeof(struct ofp_queue_prop_min_rate) == 16);
/* Max-Rate queue property description. */
struct ofp_queue_prop_max_rate {
struct ofp_queue_prop_header prop_header; /* prop: OFPQT_MAX, len: 16. */
uint16_t rate; /* In 1/10 of a percent; >1000 -> disabled. */
uint8_t pad[6]; /* 64-bit alignment */
};
OFP_ASSERT(sizeof(struct ofp_queue_prop_max_rate) == 16);
/* Experimenter queue property description. */
struct ofp_queue_prop_experimenter {
struct ofp_queue_prop_header prop_header; /* prop: OFPQT_EXPERIMENTER, len: 16. */
uint32_t experimenter; /* Experimenter ID which takes the same
form as in struct
ofp_experimenter_header. */
uint8_t pad[4]; /* 64-bit alignment */
uint8_t data[0]; /* Experimenter defined data. */
};
OFP_ASSERT(sizeof(struct ofp_queue_prop_experimenter) == 16);
/* Full description for a queue. */
struct ofp_packet_queue {
uint32_t queue_id; /* id for the specific queue. */
uint32_t port; /* Port this queue is attached to. */
uint16_t len; /* Length in bytes of this queue desc. */
uint8_t pad[6]; /* 64-bit alignment. */
struct ofp_queue_prop_header properties[0]; /* List of properties. */
};
OFP_ASSERT(sizeof(struct ofp_packet_queue) == 16);
/* Query for port queue configuration. */
struct ofp_queue_get_config_request {
struct ofp_header header;
uint32_t port; /* Port to be queried. Should refer
to a valid physical port (i.e. < OFPP_MAX),
or OFPP_ANY to request all configured
queues.*/
uint8_t pad[4];
};
OFP_ASSERT(sizeof(struct ofp_queue_get_config_request) == 16);
/* Queue configuration for a given port. */
struct ofp_queue_get_config_reply {
struct ofp_header header;
uint32_t port;
uint8_t pad[4];
struct ofp_packet_queue queues[0]; /* List of configured queues. */
};
OFP_ASSERT(sizeof(struct ofp_queue_get_config_reply) == 16);
/* OFPAT_SET_QUEUE action struct: send packets to given queue on port. */
struct ofp_action_set_queue {
uint16_t type; /* OFPAT_SET_QUEUE. */
uint16_t len; /* Len is 8. */
uint32_t queue_id; /* Queue id for the packets. */
};
OFP_ASSERT(sizeof(struct ofp_action_set_queue) == 8);
struct ofp_queue_stats_request {
uint32_t port_no; /* All ports if OFPP_ANY. */
uint32_t queue_id; /* All queues if OFPQ_ALL. */
};
OFP_ASSERT(sizeof(struct ofp_queue_stats_request) == 8);
struct ofp_queue_stats {
uint32_t port_no;
uint32_t queue_id; /* Queue i.d */
uint64_t tx_bytes; /* Number of transmitted bytes. */
uint64_t tx_packets; /* Number of transmitted packets. */
uint64_t tx_errors; /* Number of packets dropped due to overrun. */
};
OFP_ASSERT(sizeof(struct ofp_queue_stats) == 32);
/* Configures the "role" of the sending controller. The default role is:
*
* - Equal (NX_ROLE_EQUAL), which allows the controller access to all
* OpenFlow features. All controllers have equal responsibility.
*
* The other possible roles are a related pair:
*
* - Master (NX_ROLE_MASTER) is equivalent to Equal, except that there may
* be at most one Master controller at a time: when a controller
* configures itself as Master, any existing Master is demoted to the
* Slave role.
*
* - Slave (NX_ROLE_SLAVE) allows the controller read-only access to
* OpenFlow features. In particular attempts to modify the flow table
* will be rejected with an OFPBRC_EPERM error.
*
* Slave controllers do not receive OFPT_PACKET_IN or OFPT_FLOW_REMOVED
* messages, but they do receive OFPT_PORT_STATUS messages.
*/
/* Controller roles. */
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. */
};
/* Role request and reply message. */
struct ofp_role_request {
struct ofp_header header; /* Type OFPT_ROLE_REQUEST/OFPT_ROLE_REPLY. */
uint32_t role; /* One of NX_ROLE_*. */
uint8_t pad[4]; /* Align to 64 bits. */
uint64_t generation_id; /* Master Election Generation Id */
};
OFP_ASSERT(sizeof(struct ofp_role_request) == 24);
#endif /* openflow/openflow.h */