2 * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira Networks.
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:
8 * http://www.apache.org/licenses/LICENSE-2.0
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 implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 /* OpenFlow: protocol between controller and datapath. */
19 #ifndef OPENFLOW_OPENFLOW10_H
20 #define OPENFLOW_OPENFLOW10_H 1
22 #include "openflow/openflow-common.h"
24 /* Port numbering. Physical ports are numbered starting from 1. */
26 /* Maximum number of physical switch ports. */
29 /* Fake output "ports". */
30 OFPP_IN_PORT = 0xfff8, /* Send the packet out the input port. This
31 virtual port must be explicitly used
32 in order to send back out of the input
34 OFPP_TABLE = 0xfff9, /* Perform actions in flow table.
35 NB: This can only be the destination
36 port for packet-out messages. */
37 OFPP_NORMAL = 0xfffa, /* Process with normal L2/L3 switching. */
38 OFPP_FLOOD = 0xfffb, /* All physical ports except input port and
39 those disabled by STP. */
40 OFPP_ALL = 0xfffc, /* All physical ports except input port. */
41 OFPP_CONTROLLER = 0xfffd, /* Send to controller. */
42 OFPP_LOCAL = 0xfffe, /* Local openflow "port". */
43 OFPP_NONE = 0xffff /* Not associated with a physical port. */
47 /* Immutable messages. */
48 OFPT_HELLO, /* Symmetric message */
49 OFPT_ERROR, /* Symmetric message */
50 OFPT_ECHO_REQUEST, /* Symmetric message */
51 OFPT_ECHO_REPLY, /* Symmetric message */
52 OFPT_VENDOR, /* Symmetric message */
54 /* Switch configuration messages. */
55 OFPT_FEATURES_REQUEST, /* Controller/switch message */
56 OFPT_FEATURES_REPLY, /* Controller/switch message */
57 OFPT_GET_CONFIG_REQUEST, /* Controller/switch message */
58 OFPT_GET_CONFIG_REPLY, /* Controller/switch message */
59 OFPT_SET_CONFIG, /* Controller/switch message */
61 /* Asynchronous messages. */
62 OFPT_PACKET_IN, /* Async message */
63 OFPT_FLOW_REMOVED, /* Async message */
64 OFPT_PORT_STATUS, /* Async message */
66 /* Controller command messages. */
67 OFPT_PACKET_OUT, /* Controller/switch message */
68 OFPT_FLOW_MOD, /* Controller/switch message */
69 OFPT_PORT_MOD, /* Controller/switch message */
71 /* Statistics messages. */
72 OFPT_STATS_REQUEST, /* Controller/switch message */
73 OFPT_STATS_REPLY, /* Controller/switch message */
75 /* Barrier messages. */
76 OFPT_BARRIER_REQUEST, /* Controller/switch message */
77 OFPT_BARRIER_REPLY, /* Controller/switch message */
79 /* Queue Configuration messages. */
80 OFPT_QUEUE_GET_CONFIG_REQUEST, /* Controller/switch message */
81 OFPT_QUEUE_GET_CONFIG_REPLY /* Controller/switch message */
84 /* Header on all OpenFlow packets. */
86 uint8_t version; /* An OpenFlow version number, e.g. OFP10_VERSION. */
87 uint8_t type; /* One of the OFPT_ constants. */
88 ovs_be16 length; /* Length including this ofp_header. */
89 ovs_be32 xid; /* Transaction id associated with this packet.
90 Replies use the same id as was in the request
91 to facilitate pairing. */
93 OFP_ASSERT(sizeof(struct ofp_header) == 8);
95 /* OFPT_HELLO. This message has an empty body, but implementations must
96 * ignore any data included in the body, to allow for future extensions. */
98 struct ofp_header header;
101 #define OFP_DEFAULT_MISS_SEND_LEN 128
103 enum ofp_config_flags {
104 /* Handling of IP fragments. */
105 OFPC_FRAG_NORMAL = 0, /* No special handling for fragments. */
106 OFPC_FRAG_DROP = 1, /* Drop fragments. */
107 OFPC_FRAG_REASM = 2, /* Reassemble (only if OFPC_IP_REASM set). */
108 OFPC_FRAG_NX_MATCH = 3, /* Make first fragments available for matching. */
111 /* TTL processing - applicable for IP and MPLS packets. */
112 OFPC_INVALID_TTL_TO_CONTROLLER = 1 << 2, /* Send packets with invalid TTL
113 to the controller. */
116 /* Switch configuration. */
117 struct ofp_switch_config {
118 struct ofp_header header;
119 ovs_be16 flags; /* OFPC_* flags. */
120 ovs_be16 miss_send_len; /* Max bytes of new flow that datapath should
121 send to the controller. */
123 OFP_ASSERT(sizeof(struct ofp_switch_config) == 12);
125 /* Capabilities supported by the datapath. */
126 enum ofp_capabilities {
127 OFPC_FLOW_STATS = 1 << 0, /* Flow statistics. */
128 OFPC_TABLE_STATS = 1 << 1, /* Table statistics. */
129 OFPC_PORT_STATS = 1 << 2, /* Port statistics. */
130 OFPC_STP = 1 << 3, /* 802.1d spanning tree. */
131 OFPC_RESERVED = 1 << 4, /* Reserved, must not be set. */
132 OFPC_IP_REASM = 1 << 5, /* Can reassemble IP fragments. */
133 OFPC_QUEUE_STATS = 1 << 6, /* Queue statistics. */
134 OFPC_ARP_MATCH_IP = 1 << 7 /* Match IP addresses in ARP
138 /* Flags to indicate behavior of the physical port. These flags are
139 * used in ofp_phy_port to describe the current configuration. They are
140 * used in the ofp_port_mod message to configure the port's behavior.
142 enum ofp_port_config {
143 OFPPC_PORT_DOWN = 1 << 0, /* Port is administratively down. */
145 OFPPC_NO_STP = 1 << 1, /* Disable 802.1D spanning tree on port. */
146 OFPPC_NO_RECV = 1 << 2, /* Drop all packets except 802.1D
147 spanning tree packets. */
148 OFPPC_NO_RECV_STP = 1 << 3, /* Drop received 802.1D STP packets. */
149 OFPPC_NO_FLOOD = 1 << 4, /* Do not include this port when flooding. */
150 OFPPC_NO_FWD = 1 << 5, /* Drop packets forwarded to port. */
151 OFPPC_NO_PACKET_IN = 1 << 6 /* Do not send packet-in msgs for port. */
154 /* Current state of the physical port. These are not configurable from
157 enum ofp_port_state {
158 OFPPS_LINK_DOWN = 1 << 0, /* No physical link present. */
160 /* The OFPPS_STP_* bits have no effect on switch operation. The
161 * controller must adjust OFPPC_NO_RECV, OFPPC_NO_FWD, and
162 * OFPPC_NO_PACKET_IN appropriately to fully implement an 802.1D spanning
164 OFPPS_STP_LISTEN = 0 << 8, /* Not learning or relaying frames. */
165 OFPPS_STP_LEARN = 1 << 8, /* Learning but not relaying frames. */
166 OFPPS_STP_FORWARD = 2 << 8, /* Learning and relaying frames. */
167 OFPPS_STP_BLOCK = 3 << 8, /* Not part of spanning tree. */
168 OFPPS_STP_MASK = 3 << 8 /* Bit mask for OFPPS_STP_* values. */
171 /* Features of physical ports available in a datapath. */
172 enum ofp_port_features {
173 OFPPF_10MB_HD = 1 << 0, /* 10 Mb half-duplex rate support. */
174 OFPPF_10MB_FD = 1 << 1, /* 10 Mb full-duplex rate support. */
175 OFPPF_100MB_HD = 1 << 2, /* 100 Mb half-duplex rate support. */
176 OFPPF_100MB_FD = 1 << 3, /* 100 Mb full-duplex rate support. */
177 OFPPF_1GB_HD = 1 << 4, /* 1 Gb half-duplex rate support. */
178 OFPPF_1GB_FD = 1 << 5, /* 1 Gb full-duplex rate support. */
179 OFPPF_10GB_FD = 1 << 6, /* 10 Gb full-duplex rate support. */
180 OFPPF_COPPER = 1 << 7, /* Copper medium. */
181 OFPPF_FIBER = 1 << 8, /* Fiber medium. */
182 OFPPF_AUTONEG = 1 << 9, /* Auto-negotiation. */
183 OFPPF_PAUSE = 1 << 10, /* Pause. */
184 OFPPF_PAUSE_ASYM = 1 << 11 /* Asymmetric pause. */
187 /* Description of a physical port */
188 struct ofp_phy_port {
190 uint8_t hw_addr[OFP_ETH_ALEN];
191 char name[OFP_MAX_PORT_NAME_LEN]; /* Null-terminated */
193 ovs_be32 config; /* Bitmap of OFPPC_* flags. */
194 ovs_be32 state; /* Bitmap of OFPPS_* flags. */
196 /* Bitmaps of OFPPF_* that describe features. All bits zeroed if
197 * unsupported or unavailable. */
198 ovs_be32 curr; /* Current features. */
199 ovs_be32 advertised; /* Features being advertised by the port. */
200 ovs_be32 supported; /* Features supported by the port. */
201 ovs_be32 peer; /* Features advertised by peer. */
203 OFP_ASSERT(sizeof(struct ofp_phy_port) == 48);
205 /* Switch features. */
206 struct ofp_switch_features {
207 struct ofp_header header;
208 ovs_be64 datapath_id; /* Datapath unique ID. The lower 48-bits are for
209 a MAC address, while the upper 16-bits are
210 implementer-defined. */
212 ovs_be32 n_buffers; /* Max packets buffered at once. */
214 uint8_t n_tables; /* Number of tables supported by datapath. */
215 uint8_t pad[3]; /* Align to 64-bits. */
218 ovs_be32 capabilities; /* Bitmap of support "ofp_capabilities". */
219 ovs_be32 actions; /* Bitmap of supported "ofp_action_type"s. */
222 struct ofp_phy_port ports[0]; /* Port definitions. The number of ports
223 is inferred from the length field in
226 OFP_ASSERT(sizeof(struct ofp_switch_features) == 32);
228 /* What changed about the physical port */
229 enum ofp_port_reason {
230 OFPPR_ADD, /* The port was added. */
231 OFPPR_DELETE, /* The port was removed. */
232 OFPPR_MODIFY /* Some attribute of the port has changed. */
235 /* A physical port has changed in the datapath */
236 struct ofp_port_status {
237 struct ofp_header header;
238 uint8_t reason; /* One of OFPPR_*. */
239 uint8_t pad[7]; /* Align to 64-bits. */
240 struct ofp_phy_port desc;
242 OFP_ASSERT(sizeof(struct ofp_port_status) == 64);
244 /* Modify behavior of the physical port */
245 struct ofp_port_mod {
246 struct ofp_header header;
248 uint8_t hw_addr[OFP_ETH_ALEN]; /* The hardware address is not
249 configurable. This is used to
250 sanity-check the request, so it must
251 be the same as returned in an
252 ofp_phy_port struct. */
254 ovs_be32 config; /* Bitmap of OFPPC_* flags. */
255 ovs_be32 mask; /* Bitmap of OFPPC_* flags to be changed. */
257 ovs_be32 advertise; /* Bitmap of "ofp_port_features"s. Zero all
258 bits to prevent any action taking place. */
259 uint8_t pad[4]; /* Pad to 64-bits. */
261 OFP_ASSERT(sizeof(struct ofp_port_mod) == 32);
263 /* Why is this packet being sent to the controller? */
264 enum ofp_packet_in_reason {
265 OFPR_NO_MATCH, /* No matching flow. */
266 OFPR_ACTION, /* Action explicitly output to controller. */
267 OFPR_INVALID_TTL /* Packet has invalid TTL. */,
271 /* Packet received on port (datapath -> controller). */
272 struct ofp_packet_in {
273 struct ofp_header header;
274 ovs_be32 buffer_id; /* ID assigned by datapath. */
275 ovs_be16 total_len; /* Full length of frame. */
276 ovs_be16 in_port; /* Port on which frame was received. */
277 uint8_t reason; /* Reason packet is being sent (one of OFPR_*) */
279 uint8_t data[0]; /* Ethernet frame, halfway through 32-bit word,
280 so the IP header is 32-bit aligned. The
281 amount of data is inferred from the length
282 field in the header. Because of padding,
283 offsetof(struct ofp_packet_in, data) ==
284 sizeof(struct ofp_packet_in) - 2. */
286 OFP_ASSERT(sizeof(struct ofp_packet_in) == 20);
288 enum ofp_action_type {
289 OFPAT_OUTPUT, /* Output to switch port. */
290 OFPAT_SET_VLAN_VID, /* Set the 802.1q VLAN id. */
291 OFPAT_SET_VLAN_PCP, /* Set the 802.1q priority. */
292 OFPAT_STRIP_VLAN, /* Strip the 802.1q header. */
293 OFPAT_SET_DL_SRC, /* Ethernet source address. */
294 OFPAT_SET_DL_DST, /* Ethernet destination address. */
295 OFPAT_SET_NW_SRC, /* IP source address. */
296 OFPAT_SET_NW_DST, /* IP destination address. */
297 OFPAT_SET_NW_TOS, /* IP ToS (DSCP field, 6 bits). */
298 OFPAT_SET_TP_SRC, /* TCP/UDP source port. */
299 OFPAT_SET_TP_DST, /* TCP/UDP destination port. */
300 OFPAT_ENQUEUE, /* Output to queue. */
301 OFPAT_VENDOR = 0xffff
304 /* Action structure for OFPAT_OUTPUT, which sends packets out 'port'.
305 * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max
306 * number of bytes to send. A 'max_len' of zero means no bytes of the
307 * packet should be sent. */
308 struct ofp_action_output {
309 ovs_be16 type; /* OFPAT_OUTPUT. */
310 ovs_be16 len; /* Length is 8. */
311 ovs_be16 port; /* Output port. */
312 ovs_be16 max_len; /* Max length to send to controller. */
314 OFP_ASSERT(sizeof(struct ofp_action_output) == 8);
316 /* The VLAN id is 12 bits, so we can use the entire 16 bits to indicate
317 * special conditions. All ones is used to match that no VLAN id was
319 #define OFP_VLAN_NONE 0xffff
321 /* Action structure for OFPAT_SET_VLAN_VID. */
322 struct ofp_action_vlan_vid {
323 ovs_be16 type; /* OFPAT_SET_VLAN_VID. */
324 ovs_be16 len; /* Length is 8. */
325 ovs_be16 vlan_vid; /* VLAN id. */
328 OFP_ASSERT(sizeof(struct ofp_action_vlan_vid) == 8);
330 /* Action structure for OFPAT_SET_VLAN_PCP. */
331 struct ofp_action_vlan_pcp {
332 ovs_be16 type; /* OFPAT_SET_VLAN_PCP. */
333 ovs_be16 len; /* Length is 8. */
334 uint8_t vlan_pcp; /* VLAN priority. */
337 OFP_ASSERT(sizeof(struct ofp_action_vlan_pcp) == 8);
339 /* Action structure for OFPAT_SET_DL_SRC/DST. */
340 struct ofp_action_dl_addr {
341 ovs_be16 type; /* OFPAT_SET_DL_SRC/DST. */
342 ovs_be16 len; /* Length is 16. */
343 uint8_t dl_addr[OFP_ETH_ALEN]; /* Ethernet address. */
346 OFP_ASSERT(sizeof(struct ofp_action_dl_addr) == 16);
348 /* Action structure for OFPAT_SET_NW_SRC/DST. */
349 struct ofp_action_nw_addr {
350 ovs_be16 type; /* OFPAT_SET_TW_SRC/DST. */
351 ovs_be16 len; /* Length is 8. */
352 ovs_be32 nw_addr; /* IP address. */
354 OFP_ASSERT(sizeof(struct ofp_action_nw_addr) == 8);
356 /* Action structure for OFPAT_SET_NW_TOS. */
357 struct ofp_action_nw_tos {
358 ovs_be16 type; /* OFPAT_SET_TW_TOS. */
359 ovs_be16 len; /* Length is 8. */
360 uint8_t nw_tos; /* IP TOS (DSCP field, 6 bits). */
363 OFP_ASSERT(sizeof(struct ofp_action_nw_tos) == 8);
365 /* Action structure for OFPAT_SET_TP_SRC/DST. */
366 struct ofp_action_tp_port {
367 ovs_be16 type; /* OFPAT_SET_TP_SRC/DST. */
368 ovs_be16 len; /* Length is 8. */
369 ovs_be16 tp_port; /* TCP/UDP port. */
372 OFP_ASSERT(sizeof(struct ofp_action_tp_port) == 8);
374 /* Action header for OFPAT_VENDOR. The rest of the body is vendor-defined. */
375 struct ofp_action_vendor_header {
376 ovs_be16 type; /* OFPAT_VENDOR. */
377 ovs_be16 len; /* Length is a multiple of 8. */
378 ovs_be32 vendor; /* Vendor ID, which takes the same form
379 as in "struct ofp_vendor_header". */
381 OFP_ASSERT(sizeof(struct ofp_action_vendor_header) == 8);
383 /* Action header that is common to all actions. The length includes the
384 * header and any padding used to make the action 64-bit aligned.
385 * NB: The length of an action *must* always be a multiple of eight. */
386 struct ofp_action_header {
387 ovs_be16 type; /* One of OFPAT_*. */
388 ovs_be16 len; /* Length of action, including this
389 header. This is the length of action,
390 including any padding to make it
394 OFP_ASSERT(sizeof(struct ofp_action_header) == 8);
396 /* OFPAT_ENQUEUE action struct: send packets to given queue on port. */
397 struct ofp_action_enqueue {
398 ovs_be16 type; /* OFPAT_ENQUEUE. */
399 ovs_be16 len; /* Len is 16. */
400 ovs_be16 port; /* Port that queue belongs. Should
401 refer to a valid physical port
402 (i.e. < OFPP_MAX) or OFPP_IN_PORT. */
403 uint8_t pad[6]; /* Pad for 64-bit alignment. */
404 ovs_be32 queue_id; /* Where to enqueue the packets. */
406 OFP_ASSERT(sizeof(struct ofp_action_enqueue) == 16);
410 struct ofp_action_header header;
411 struct ofp_action_vendor_header vendor;
412 struct ofp_action_output output;
413 struct ofp_action_vlan_vid vlan_vid;
414 struct ofp_action_vlan_pcp vlan_pcp;
415 struct ofp_action_nw_addr nw_addr;
416 struct ofp_action_nw_tos nw_tos;
417 struct ofp_action_tp_port tp_port;
419 OFP_ASSERT(sizeof(union ofp_action) == 8);
421 /* Send packet (controller -> datapath). */
422 struct ofp_packet_out {
423 struct ofp_header header;
424 ovs_be32 buffer_id; /* ID assigned by datapath or UINT32_MAX. */
425 ovs_be16 in_port; /* Packet's input port (OFPP_NONE if none). */
426 ovs_be16 actions_len; /* Size of action array in bytes. */
428 * - Exactly 'actions_len' bytes (possibly 0 bytes, and always a multiple
429 * of 8) containing actions.
430 * - If 'buffer_id' == UINT32_MAX, packet data to fill out the remainder
431 * of the message length.
434 OFP_ASSERT(sizeof(struct ofp_packet_out) == 16);
436 enum ofp_flow_mod_command {
437 OFPFC_ADD, /* New flow. */
438 OFPFC_MODIFY, /* Modify all matching flows. */
439 OFPFC_MODIFY_STRICT, /* Modify entry strictly matching wildcards */
440 OFPFC_DELETE, /* Delete all matching flows. */
441 OFPFC_DELETE_STRICT /* Strictly match wildcards and priority. */
444 /* Flow wildcards. */
445 enum ofp_flow_wildcards {
446 OFPFW_IN_PORT = 1 << 0, /* Switch input port. */
447 OFPFW_DL_VLAN = 1 << 1, /* VLAN vid. */
448 OFPFW_DL_SRC = 1 << 2, /* Ethernet source address. */
449 OFPFW_DL_DST = 1 << 3, /* Ethernet destination address. */
450 OFPFW_DL_TYPE = 1 << 4, /* Ethernet frame type. */
451 OFPFW_NW_PROTO = 1 << 5, /* IP protocol. */
452 OFPFW_TP_SRC = 1 << 6, /* TCP/UDP source port. */
453 OFPFW_TP_DST = 1 << 7, /* TCP/UDP destination port. */
455 /* IP source address wildcard bit count. 0 is exact match, 1 ignores the
456 * LSB, 2 ignores the 2 least-significant bits, ..., 32 and higher wildcard
457 * the entire field. This is the *opposite* of the usual convention where
458 * e.g. /24 indicates that 8 bits (not 24 bits) are wildcarded. */
459 OFPFW_NW_SRC_SHIFT = 8,
460 OFPFW_NW_SRC_BITS = 6,
461 OFPFW_NW_SRC_MASK = ((1 << OFPFW_NW_SRC_BITS) - 1) << OFPFW_NW_SRC_SHIFT,
462 OFPFW_NW_SRC_ALL = 32 << OFPFW_NW_SRC_SHIFT,
464 /* IP destination address wildcard bit count. Same format as source. */
465 OFPFW_NW_DST_SHIFT = 14,
466 OFPFW_NW_DST_BITS = 6,
467 OFPFW_NW_DST_MASK = ((1 << OFPFW_NW_DST_BITS) - 1) << OFPFW_NW_DST_SHIFT,
468 OFPFW_NW_DST_ALL = 32 << OFPFW_NW_DST_SHIFT,
470 OFPFW_DL_VLAN_PCP = 1 << 20, /* VLAN priority. */
471 OFPFW_NW_TOS = 1 << 21, /* IP ToS (DSCP field, 6 bits). */
473 /* Wildcard all fields. */
474 OFPFW_ALL = ((1 << 22) - 1)
477 /* The wildcards for ICMP type and code fields use the transport source
478 * and destination port fields, respectively. */
479 #define OFPFW_ICMP_TYPE OFPFW_TP_SRC
480 #define OFPFW_ICMP_CODE OFPFW_TP_DST
482 /* Values below this cutoff are 802.3 packets and the two bytes
483 * following MAC addresses are used as a frame length. Otherwise, the
484 * two bytes are used as the Ethernet type.
486 #define OFP_DL_TYPE_ETH2_CUTOFF 0x0600
488 /* Value of dl_type to indicate that the frame does not include an
491 #define OFP_DL_TYPE_NOT_ETH_TYPE 0x05ff
493 /* The VLAN id is 12-bits, so we can use the entire 16 bits to indicate
494 * special conditions. All ones indicates that no VLAN id was set.
496 #define OFP_VLAN_NONE 0xffff
498 /* Fields to match against flows */
500 ovs_be32 wildcards; /* Wildcard fields. */
501 ovs_be16 in_port; /* Input switch port. */
502 uint8_t dl_src[OFP_ETH_ALEN]; /* Ethernet source address. */
503 uint8_t dl_dst[OFP_ETH_ALEN]; /* Ethernet destination address. */
504 ovs_be16 dl_vlan; /* Input VLAN. */
505 uint8_t dl_vlan_pcp; /* Input VLAN priority. */
506 uint8_t pad1[1]; /* Align to 64-bits. */
507 ovs_be16 dl_type; /* Ethernet frame type. */
508 uint8_t nw_tos; /* IP ToS (DSCP field, 6 bits). */
509 uint8_t nw_proto; /* IP protocol or lower 8 bits of
511 uint8_t pad2[2]; /* Align to 64-bits. */
512 ovs_be32 nw_src; /* IP source address. */
513 ovs_be32 nw_dst; /* IP destination address. */
514 ovs_be16 tp_src; /* TCP/UDP source port. */
515 ovs_be16 tp_dst; /* TCP/UDP destination port. */
517 OFP_ASSERT(sizeof(struct ofp_match) == 40);
519 /* Value used in "idle_timeout" and "hard_timeout" to indicate that the entry
521 #define OFP_FLOW_PERMANENT 0
523 /* By default, choose a priority in the middle. */
524 #define OFP_DEFAULT_PRIORITY 0x8000
526 enum ofp_flow_mod_flags {
527 OFPFF_SEND_FLOW_REM = 1 << 0, /* Send flow removed message when flow
528 * expires or is deleted. */
529 OFPFF_CHECK_OVERLAP = 1 << 1, /* Check for overlapping entries first. */
530 OFPFF_EMERG = 1 << 2 /* Ramark this is for emergency. */
533 /* Flow setup and teardown (controller -> datapath). */
534 struct ofp_flow_mod {
535 struct ofp_header header;
536 struct ofp_match match; /* Fields to match */
537 ovs_be64 cookie; /* Opaque controller-issued identifier. */
540 ovs_be16 command; /* One of OFPFC_*. */
541 ovs_be16 idle_timeout; /* Idle time before discarding (seconds). */
542 ovs_be16 hard_timeout; /* Max time before discarding (seconds). */
543 ovs_be16 priority; /* Priority level of flow entry. */
544 ovs_be32 buffer_id; /* Buffered packet to apply to (or -1).
545 Not meaningful for OFPFC_DELETE*. */
546 ovs_be16 out_port; /* For OFPFC_DELETE* commands, require
547 matching entries to include this as an
548 output port. A value of OFPP_NONE
549 indicates no restriction. */
550 ovs_be16 flags; /* One of OFPFF_*. */
551 struct ofp_action_header actions[0]; /* The action length is inferred
552 from the length field in the
555 OFP_ASSERT(sizeof(struct ofp_flow_mod) == 72);
557 /* Why was this flow removed? */
558 enum ofp_flow_removed_reason {
559 OFPRR_IDLE_TIMEOUT, /* Flow idle time exceeded idle_timeout. */
560 OFPRR_HARD_TIMEOUT, /* Time exceeded hard_timeout. */
561 OFPRR_DELETE /* Evicted by a DELETE flow mod. */
564 /* Flow removed (datapath -> controller). */
565 struct ofp_flow_removed {
566 struct ofp_header header;
567 struct ofp_match match; /* Description of fields. */
568 ovs_be64 cookie; /* Opaque controller-issued identifier. */
570 ovs_be16 priority; /* Priority level of flow entry. */
571 uint8_t reason; /* One of OFPRR_*. */
572 uint8_t pad[1]; /* Align to 32-bits. */
574 ovs_be32 duration_sec; /* Time flow was alive in seconds. */
575 ovs_be32 duration_nsec; /* Time flow was alive in nanoseconds beyond
577 ovs_be16 idle_timeout; /* Idle timeout from original flow mod. */
578 uint8_t pad2[2]; /* Align to 64-bits. */
579 ovs_be64 packet_count;
582 OFP_ASSERT(sizeof(struct ofp_flow_removed) == 88);
584 /* OFPT_ERROR: Error message (datapath -> controller). */
585 struct ofp_error_msg {
586 struct ofp_header header;
590 uint8_t data[0]; /* Variable-length data. Interpreted based
591 on the type and code. */
593 OFP_ASSERT(sizeof(struct ofp_error_msg) == 12);
595 enum ofp_stats_types {
596 /* Description of this OpenFlow switch.
597 * The request is struct ofp_stats_msg.
598 * The reply is struct ofp_desc_stats. */
601 /* Individual flow statistics.
602 * The request is struct ofp_flow_stats_request.
603 * The reply body is an array of struct ofp_flow_stats. */
606 /* Aggregate flow statistics.
607 * The request is struct ofp_flow_stats_request.
608 * The reply is struct ofp_aggregate_stats_reply. */
611 /* Flow table statistics.
612 * The request is struct ofp_stats_msg.
613 * The reply body is an array of struct ofp_table_stats. */
616 /* Physical port statistics.
617 * The request is struct ofp_port_stats_request.
618 * The reply body is an array of struct ofp_port_stats. */
621 /* Queue statistics for a port.
622 * The request body is struct ofp_queue_stats_request.
623 * The reply body is an array of struct ofp_queue_stats. */
627 * The request and reply begin with "struct ofp_vendor_stats". */
628 OFPST_VENDOR = 0xffff
631 /* Statistics request or reply message. */
632 struct ofp_stats_msg {
633 struct ofp_header header;
634 ovs_be16 type; /* One of the OFPST_* constants. */
635 ovs_be16 flags; /* Requests: always 0.
636 * Replies: 0 or OFPSF_REPLY_MORE. */
638 OFP_ASSERT(sizeof(struct ofp_stats_msg) == 12);
640 enum ofp_stats_reply_flags {
641 OFPSF_REPLY_MORE = 1 << 0 /* More replies to follow. */
644 #define DESC_STR_LEN 256
645 #define SERIAL_NUM_LEN 32
646 /* Reply to OFPST_DESC request. Each entry is a NULL-terminated ASCII
648 struct ofp_desc_stats {
649 struct ofp_stats_msg osm;
650 char mfr_desc[DESC_STR_LEN]; /* Manufacturer description. */
651 char hw_desc[DESC_STR_LEN]; /* Hardware description. */
652 char sw_desc[DESC_STR_LEN]; /* Software description. */
653 char serial_num[SERIAL_NUM_LEN]; /* Serial number. */
654 char dp_desc[DESC_STR_LEN]; /* Human readable description of
657 OFP_ASSERT(sizeof(struct ofp_desc_stats) == 1068);
659 /* Stats request of type OFPST_AGGREGATE or OFPST_FLOW. */
660 struct ofp_flow_stats_request {
661 struct ofp_stats_msg osm;
662 struct ofp_match match; /* Fields to match. */
663 uint8_t table_id; /* ID of table to read (from ofp_table_stats)
664 or 0xff for all tables. */
665 uint8_t pad; /* Align to 32 bits. */
666 ovs_be16 out_port; /* Require matching entries to include this
667 as an output port. A value of OFPP_NONE
668 indicates no restriction. */
670 OFP_ASSERT(sizeof(struct ofp_flow_stats_request) == 56);
672 /* Body of reply to OFPST_FLOW request. */
673 struct ofp_flow_stats {
674 ovs_be16 length; /* Length of this entry. */
675 uint8_t table_id; /* ID of table flow came from. */
677 struct ofp_match match; /* Description of fields. */
678 ovs_be32 duration_sec; /* Time flow has been alive in seconds. */
679 ovs_be32 duration_nsec; /* Time flow has been alive in nanoseconds
680 beyond duration_sec. */
681 ovs_be16 priority; /* Priority of the entry. Only meaningful
682 when this is not an exact-match entry. */
683 ovs_be16 idle_timeout; /* Number of seconds idle before expiration. */
684 ovs_be16 hard_timeout; /* Number of seconds before expiration. */
685 uint8_t pad2[6]; /* Align to 64 bits. */
686 ovs_32aligned_be64 cookie; /* Opaque controller-issued identifier. */
687 ovs_32aligned_be64 packet_count; /* Number of packets in flow. */
688 ovs_32aligned_be64 byte_count; /* Number of bytes in flow. */
689 struct ofp_action_header actions[0]; /* Actions. */
691 OFP_ASSERT(sizeof(struct ofp_flow_stats) == 88);
693 /* Reply to OFPST_AGGREGATE request. */
694 struct ofp_aggregate_stats_reply {
695 struct ofp_stats_msg osm;
696 ovs_32aligned_be64 packet_count; /* Number of packets in flows. */
697 ovs_32aligned_be64 byte_count; /* Number of bytes in flows. */
698 ovs_be32 flow_count; /* Number of flows. */
699 uint8_t pad[4]; /* Align to 64 bits. */
701 OFP_ASSERT(sizeof(struct ofp_aggregate_stats_reply) == 36);
703 /* Body of reply to OFPST_TABLE request. */
704 struct ofp_table_stats {
705 uint8_t table_id; /* Identifier of table. Lower numbered tables
706 are consulted first. */
707 uint8_t pad[3]; /* Align to 32-bits. */
708 char name[OFP_MAX_TABLE_NAME_LEN];
709 ovs_be32 wildcards; /* Bitmap of OFPFW_* wildcards that are
710 supported by the table. */
711 ovs_be32 max_entries; /* Max number of entries supported. */
712 ovs_be32 active_count; /* Number of active entries. */
713 ovs_32aligned_be64 lookup_count; /* # of packets looked up in table. */
714 ovs_32aligned_be64 matched_count; /* Number of packets that hit table. */
716 OFP_ASSERT(sizeof(struct ofp_table_stats) == 64);
718 /* Stats request of type OFPST_PORT. */
719 struct ofp_port_stats_request {
720 struct ofp_stats_msg osm;
721 ovs_be16 port_no; /* OFPST_PORT message may request statistics
722 for a single port (specified with port_no)
723 or for all ports (port_no == OFPP_NONE). */
726 OFP_ASSERT(sizeof(struct ofp_port_stats_request) == 20);
728 /* Body of reply to OFPST_PORT request. If a counter is unsupported, set
729 * the field to all ones. */
730 struct ofp_port_stats {
732 uint8_t pad[6]; /* Align to 64-bits. */
733 ovs_32aligned_be64 rx_packets; /* Number of received packets. */
734 ovs_32aligned_be64 tx_packets; /* Number of transmitted packets. */
735 ovs_32aligned_be64 rx_bytes; /* Number of received bytes. */
736 ovs_32aligned_be64 tx_bytes; /* Number of transmitted bytes. */
737 ovs_32aligned_be64 rx_dropped; /* Number of packets dropped by RX. */
738 ovs_32aligned_be64 tx_dropped; /* Number of packets dropped by TX. */
739 ovs_32aligned_be64 rx_errors; /* Number of receive errors. This is a
740 super-set of receive errors and should be
741 great than or equal to the sum of all
743 ovs_32aligned_be64 tx_errors; /* Number of transmit errors. This is a
744 super-set of transmit errors. */
745 ovs_32aligned_be64 rx_frame_err; /* Number of frame alignment errors. */
746 ovs_32aligned_be64 rx_over_err; /* Number of packets with RX overrun. */
747 ovs_32aligned_be64 rx_crc_err; /* Number of CRC errors. */
748 ovs_32aligned_be64 collisions; /* Number of collisions. */
750 OFP_ASSERT(sizeof(struct ofp_port_stats) == 104);
752 /* All ones is used to indicate all queues in a port (for stats retrieval). */
753 #define OFPQ_ALL 0xffffffff
755 /* Body for stats request of type OFPST_QUEUE. */
756 struct ofp_queue_stats_request {
757 struct ofp_stats_msg osm;
758 ovs_be16 port_no; /* All ports if OFPP_ALL. */
759 uint8_t pad[2]; /* Align to 32-bits. */
760 ovs_be32 queue_id; /* All queues if OFPQ_ALL. */
762 OFP_ASSERT(sizeof(struct ofp_queue_stats_request) == 20);
764 /* Body for stats reply of type OFPST_QUEUE consists of an array of this
766 struct ofp_queue_stats {
768 uint8_t pad[2]; /* Align to 32-bits. */
769 ovs_be32 queue_id; /* Queue id. */
770 ovs_32aligned_be64 tx_bytes; /* Number of transmitted bytes. */
771 ovs_32aligned_be64 tx_packets; /* Number of transmitted packets. */
772 ovs_32aligned_be64 tx_errors; /* # of packets dropped due to overrun. */
774 OFP_ASSERT(sizeof(struct ofp_queue_stats) == 32);
776 /* Vendor extension stats message. */
777 struct ofp_vendor_stats_msg {
778 struct ofp_stats_msg osm; /* Type OFPST_VENDOR. */
779 ovs_be32 vendor; /* Vendor ID:
780 * - MSB 0: low-order bytes are IEEE OUI.
781 * - MSB != 0: defined by OpenFlow
783 /* Followed by vendor-defined arbitrary additional data. */
785 OFP_ASSERT(sizeof(struct ofp_vendor_stats_msg) == 16);
787 /* Vendor extension. */
788 struct ofp_vendor_header {
789 struct ofp_header header; /* Type OFPT_VENDOR. */
790 ovs_be32 vendor; /* Vendor ID:
791 * - MSB 0: low-order bytes are IEEE OUI.
792 * - MSB != 0: defined by OpenFlow
794 /* Vendor-defined arbitrary additional data. */
796 OFP_ASSERT(sizeof(struct ofp_vendor_header) == 12);
798 #endif /* openflow/openflow-1.0.h */