include/openflow/openflow-1.0.h

   1 /*
   2  * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira Networks.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 /* OpenFlow: protocol between controller and datapath. */
  18
  19 #ifndef OPENFLOW_OPENFLOW10_H
  20 #define OPENFLOW_OPENFLOW10_H 1
  21
  22 #include "openflow/openflow-common.h"
  23
  24 /* Port numbering.  Physical ports are numbered starting from 1. */
  25 enum ofp_port {
  26     /* Maximum number of physical switch ports. */
  27     OFPP_MAX = 0xff00,
  28
  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
  33                                   port. */
  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. */
  44 };
  45
  46 /* OpenFlow 1.0 specific message types, in addition to the common message
  47  * types. */
  48 enum ofp10_type {
  49     /* Controller command messages. */
  50     OFPT10_PACKET_OUT = 13,     /* Controller/switch message */
  51     OFPT10_FLOW_MOD,            /* Controller/switch message */
  52     OFPT10_PORT_MOD,            /* Controller/switch message */
  53
  54     /* Statistics messages. */
  55     OFPT10_STATS_REQUEST,       /* Controller/switch message */
  56     OFPT10_STATS_REPLY,         /* Controller/switch message */
  57
  58     /* Barrier messages. */
  59     OFPT10_BARRIER_REQUEST,     /* Controller/switch message */
  60     OFPT10_BARRIER_REPLY,       /* Controller/switch message */
  61
  62     /* Queue Configuration messages. */
  63     OFPT10_QUEUE_GET_CONFIG_REQUEST,  /* Controller/switch message */
  64     OFPT10_QUEUE_GET_CONFIG_REPLY     /* Controller/switch message */
  65 };
  66
  67 /* OFPT_HELLO.  This message has an empty body, but implementations must
  68  * ignore any data included in the body, to allow for future extensions. */
  69 struct ofp_hello {
  70     struct ofp_header header;
  71 };
  72
  73 #define OFP_DEFAULT_MISS_SEND_LEN   128
  74
  75 enum ofp_config_flags {
  76     /* Handling of IP fragments. */
  77     OFPC_FRAG_NORMAL   = 0,  /* No special handling for fragments. */
  78     OFPC_FRAG_DROP     = 1,  /* Drop fragments. */
  79     OFPC_FRAG_REASM    = 2,  /* Reassemble (only if OFPC_IP_REASM set). */
  80     OFPC_FRAG_NX_MATCH = 3,  /* Make first fragments available for matching. */
  81     OFPC_FRAG_MASK     = 3,
  82
  83     /* TTL processing - applicable for IP and MPLS packets. */
  84     OFPC_INVALID_TTL_TO_CONTROLLER = 1 << 2, /* Send packets with invalid TTL
  85                                                 to the controller. */
  86 };
  87
  88 /* Switch configuration. */
  89 struct ofp_switch_config {
  90     struct ofp_header header;
  91     ovs_be16 flags;             /* OFPC_* flags. */
  92     ovs_be16 miss_send_len;     /* Max bytes of new flow that datapath should
  93                                    send to the controller. */
  94 };
  95 OFP_ASSERT(sizeof(struct ofp_switch_config) == 12);
  96
  97 /* OpenFlow 1.0 specific capabilities supported by the datapath (struct
  98  * ofp_switch_features, member capabilities). */
  99 enum ofp10_capabilities {
 100     OFPC10_STP            = 1 << 3,  /* 802.1d spanning tree. */
 101     OFPC10_RESERVED       = 1 << 4,  /* Reserved, must not be set. */
 102 };
 103
 104 /* OpenFlow 1.0 specific flags to indicate behavior of the physical port.
 105  * These flags are used in ofp10_phy_port to describe the current
 106  * configuration.  They are used in the ofp10_port_mod message to configure the
 107  * port's behavior.
 108  */
 109 enum ofp10_port_config {
 110     OFPPC10_NO_STP       = 1 << 1, /* Disable 802.1D spanning tree on port. */
 111     OFPPC10_NO_RECV_STP  = 1 << 3, /* Drop received 802.1D STP packets. */
 112     OFPPC10_NO_FLOOD     = 1 << 4, /* Do not include port when flooding. */
 113 #define OFPPC10_ALL (OFPPC_PORT_DOWN | OFPPC10_NO_STP | OFPPC_NO_RECV | \
 114                      OFPPC10_NO_RECV_STP | OFPPC10_NO_FLOOD | OFPPC_NO_FWD | \
 115                      OFPPC_NO_PACKET_IN)
 116 };
 117
 118 /* OpenFlow 1.0 specific current state of the physical port.  These are not
 119  * configurable from the controller.
 120  */
 121 enum ofp10_port_state {
 122     /* The OFPPS10_STP_* bits have no effect on switch operation.  The
 123      * controller must adjust OFPPC_NO_RECV, OFPPC_NO_FWD, and
 124      * OFPPC_NO_PACKET_IN appropriately to fully implement an 802.1D spanning
 125      * tree. */
 126     OFPPS10_STP_LISTEN  = 0 << 8, /* Not learning or relaying frames. */
 127     OFPPS10_STP_LEARN   = 1 << 8, /* Learning but not relaying frames. */
 128     OFPPS10_STP_FORWARD = 2 << 8, /* Learning and relaying frames. */
 129     OFPPS10_STP_BLOCK   = 3 << 8, /* Not part of spanning tree. */
 130     OFPPS10_STP_MASK    = 3 << 8  /* Bit mask for OFPPS10_STP_* values. */
 131
 132 #define OFPPS10_ALL (OFPPS_LINK_DOWN | OFPPS10_STP_MASK)
 133 };
 134
 135 /* OpenFlow 1.0 specific features of physical ports available in a datapath. */
 136 enum ofp10_port_features {
 137     OFPPF10_COPPER     = 1 << 7,  /* Copper medium. */
 138     OFPPF10_FIBER      = 1 << 8,  /* Fiber medium. */
 139     OFPPF10_AUTONEG    = 1 << 9,  /* Auto-negotiation. */
 140     OFPPF10_PAUSE      = 1 << 10, /* Pause. */
 141     OFPPF10_PAUSE_ASYM = 1 << 11  /* Asymmetric pause. */
 142 };
 143
 144 /* Description of a physical port */
 145 struct ofp10_phy_port {
 146     ovs_be16 port_no;
 147     uint8_t hw_addr[OFP_ETH_ALEN];
 148     char name[OFP_MAX_PORT_NAME_LEN]; /* Null-terminated */
 149
 150     ovs_be32 config;        /* Bitmap of OFPPC_* and OFPPC10_* flags. */
 151     ovs_be32 state;         /* Bitmap of OFPPS_* and OFPPS10_* flags. */
 152
 153     /* Bitmaps of OFPPF_* and OFPPF10_* that describe features.  All bits
 154      * zeroed if unsupported or unavailable. */
 155     ovs_be32 curr;          /* Current features. */
 156     ovs_be32 advertised;    /* Features being advertised by the port. */
 157     ovs_be32 supported;     /* Features supported by the port. */
 158     ovs_be32 peer;          /* Features advertised by peer. */
 159 };
 160 OFP_ASSERT(sizeof(struct ofp10_phy_port) == 48);
 161
 162 /* Modify behavior of the physical port */
 163 struct ofp10_port_mod {
 164     struct ofp_header header;
 165     ovs_be16 port_no;
 166     uint8_t hw_addr[OFP_ETH_ALEN]; /* The hardware address is not
 167                                       configurable.  This is used to
 168                                       sanity-check the request, so it must
 169                                       be the same as returned in an
 170                                       ofp10_phy_port struct. */
 171
 172     ovs_be32 config;        /* Bitmap of OFPPC_* flags. */
 173     ovs_be32 mask;          /* Bitmap of OFPPC_* flags to be changed. */
 174
 175     ovs_be32 advertise;     /* Bitmap of "ofp_port_features"s.  Zero all
 176                                bits to prevent any action taking place. */
 177     uint8_t pad[4];         /* Pad to 64-bits. */
 178 };
 179 OFP_ASSERT(sizeof(struct ofp10_port_mod) == 32);
 180
 181 /* Why is this packet being sent to the controller? */
 182 enum ofp_packet_in_reason {
 183     OFPR_NO_MATCH,          /* No matching flow. */
 184     OFPR_ACTION,            /* Action explicitly output to controller. */
 185     OFPR_INVALID_TTL        /* Packet has invalid TTL. */,
 186     OFPR_N_REASONS
 187 };
 188
 189 /* Packet received on port (datapath -> controller). */
 190 struct ofp_packet_in {
 191     struct ofp_header header;
 192     ovs_be32 buffer_id;     /* ID assigned by datapath. */
 193     ovs_be16 total_len;     /* Full length of frame. */
 194     ovs_be16 in_port;       /* Port on which frame was received. */
 195     uint8_t reason;         /* Reason packet is being sent (one of OFPR_*) */
 196     uint8_t pad;
 197     uint8_t data[0];        /* Ethernet frame, halfway through 32-bit word,
 198                                so the IP header is 32-bit aligned.  The
 199                                amount of data is inferred from the length
 200                                field in the header.  Because of padding,
 201                                offsetof(struct ofp_packet_in, data) ==
 202                                sizeof(struct ofp_packet_in) - 2. */
 203 };
 204 OFP_ASSERT(sizeof(struct ofp_packet_in) == 20);
 205
 206 enum ofp10_action_type {
 207     OFPAT10_OUTPUT,             /* Output to switch port. */
 208     OFPAT10_SET_VLAN_VID,       /* Set the 802.1q VLAN id. */
 209     OFPAT10_SET_VLAN_PCP,       /* Set the 802.1q priority. */
 210     OFPAT10_STRIP_VLAN,         /* Strip the 802.1q header. */
 211     OFPAT10_SET_DL_SRC,         /* Ethernet source address. */
 212     OFPAT10_SET_DL_DST,         /* Ethernet destination address. */
 213     OFPAT10_SET_NW_SRC,         /* IP source address. */
 214     OFPAT10_SET_NW_DST,         /* IP destination address. */
 215     OFPAT10_SET_NW_TOS,         /* IP ToS (DSCP field, 6 bits). */
 216     OFPAT10_SET_TP_SRC,         /* TCP/UDP source port. */
 217     OFPAT10_SET_TP_DST,         /* TCP/UDP destination port. */
 218     OFPAT10_ENQUEUE,            /* Output to queue. */
 219     OFPAT10_VENDOR = 0xffff
 220 };
 221
 222 /* Action structure for OFPAT10_OUTPUT, which sends packets out 'port'.
 223  * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max
 224  * number of bytes to send.  A 'max_len' of zero means no bytes of the
 225  * packet should be sent. */
 226 struct ofp_action_output {
 227     ovs_be16 type;                  /* OFPAT10_OUTPUT. */
 228     ovs_be16 len;                   /* Length is 8. */
 229     ovs_be16 port;                  /* Output port. */
 230     ovs_be16 max_len;               /* Max length to send to controller. */
 231 };
 232 OFP_ASSERT(sizeof(struct ofp_action_output) == 8);
 233
 234 /* The VLAN id is 12 bits, so we can use the entire 16 bits to indicate
 235  * special conditions.  All ones is used to match that no VLAN id was
 236  * set. */
 237 #define OFP_VLAN_NONE      0xffff
 238
 239 /* Action structure for OFPAT10_SET_VLAN_VID. */
 240 struct ofp_action_vlan_vid {
 241     ovs_be16 type;                  /* OFPAT10_SET_VLAN_VID. */
 242     ovs_be16 len;                   /* Length is 8. */
 243     ovs_be16 vlan_vid;              /* VLAN id. */
 244     uint8_t pad[2];
 245 };
 246 OFP_ASSERT(sizeof(struct ofp_action_vlan_vid) == 8);
 247
 248 /* Action structure for OFPAT10_SET_VLAN_PCP. */
 249 struct ofp_action_vlan_pcp {
 250     ovs_be16 type;                  /* OFPAT10_SET_VLAN_PCP. */
 251     ovs_be16 len;                   /* Length is 8. */
 252     uint8_t vlan_pcp;               /* VLAN priority. */
 253     uint8_t pad[3];
 254 };
 255 OFP_ASSERT(sizeof(struct ofp_action_vlan_pcp) == 8);
 256
 257 /* Action structure for OFPAT10_SET_DL_SRC/DST. */
 258 struct ofp_action_dl_addr {
 259     ovs_be16 type;                  /* OFPAT10_SET_DL_SRC/DST. */
 260     ovs_be16 len;                   /* Length is 16. */
 261     uint8_t dl_addr[OFP_ETH_ALEN];  /* Ethernet address. */
 262     uint8_t pad[6];
 263 };
 264 OFP_ASSERT(sizeof(struct ofp_action_dl_addr) == 16);
 265
 266 /* Action structure for OFPAT10_SET_NW_SRC/DST. */
 267 struct ofp_action_nw_addr {
 268     ovs_be16 type;                  /* OFPAT10_SET_TW_SRC/DST. */
 269     ovs_be16 len;                   /* Length is 8. */
 270     ovs_be32 nw_addr;               /* IP address. */
 271 };
 272 OFP_ASSERT(sizeof(struct ofp_action_nw_addr) == 8);
 273
 274 /* Action structure for OFPAT10_SET_NW_TOS. */
 275 struct ofp_action_nw_tos {
 276     ovs_be16 type;                  /* OFPAT10_SET_TW_TOS. */
 277     ovs_be16 len;                   /* Length is 8. */
 278     uint8_t nw_tos;                 /* IP TOS (DSCP field, 6 bits). */
 279     uint8_t pad[3];
 280 };
 281 OFP_ASSERT(sizeof(struct ofp_action_nw_tos) == 8);
 282
 283 /* Action structure for OFPAT10_SET_TP_SRC/DST. */
 284 struct ofp_action_tp_port {
 285     ovs_be16 type;                  /* OFPAT10_SET_TP_SRC/DST. */
 286     ovs_be16 len;                   /* Length is 8. */
 287     ovs_be16 tp_port;               /* TCP/UDP port. */
 288     uint8_t pad[2];
 289 };
 290 OFP_ASSERT(sizeof(struct ofp_action_tp_port) == 8);
 291
 292 /* Action header for OFPAT10_VENDOR. The rest of the body is vendor-defined. */
 293 struct ofp_action_vendor_header {
 294     ovs_be16 type;                  /* OFPAT10_VENDOR. */
 295     ovs_be16 len;                   /* Length is a multiple of 8. */
 296     ovs_be32 vendor;                /* Vendor ID, which takes the same form
 297                                        as in "struct ofp_vendor_header". */
 298 };
 299 OFP_ASSERT(sizeof(struct ofp_action_vendor_header) == 8);
 300
 301 /* Action header that is common to all actions.  The length includes the
 302  * header and any padding used to make the action 64-bit aligned.
 303  * NB: The length of an action *must* always be a multiple of eight. */
 304 struct ofp_action_header {
 305     ovs_be16 type;                  /* One of OFPAT10_*. */
 306     ovs_be16 len;                   /* Length of action, including this
 307                                        header.  This is the length of action,
 308                                        including any padding to make it
 309                                        64-bit aligned. */
 310     uint8_t pad[4];
 311 };
 312 OFP_ASSERT(sizeof(struct ofp_action_header) == 8);
 313
 314 /* OFPAT10_ENQUEUE action struct: send packets to given queue on port. */
 315 struct ofp_action_enqueue {
 316     ovs_be16 type;            /* OFPAT10_ENQUEUE. */
 317     ovs_be16 len;             /* Len is 16. */
 318     ovs_be16 port;            /* Port that queue belongs. Should
 319                                  refer to a valid physical port
 320                                  (i.e. < OFPP_MAX) or OFPP_IN_PORT. */
 321     uint8_t pad[6];           /* Pad for 64-bit alignment. */
 322     ovs_be32 queue_id;        /* Where to enqueue the packets. */
 323 };
 324 OFP_ASSERT(sizeof(struct ofp_action_enqueue) == 16);
 325
 326 union ofp_action {
 327     ovs_be16 type;
 328     struct ofp_action_header header;
 329     struct ofp_action_vendor_header vendor;
 330     struct ofp_action_output output;
 331     struct ofp_action_vlan_vid vlan_vid;
 332     struct ofp_action_vlan_pcp vlan_pcp;
 333     struct ofp_action_nw_addr nw_addr;
 334     struct ofp_action_nw_tos nw_tos;
 335     struct ofp_action_tp_port tp_port;
 336 };
 337 OFP_ASSERT(sizeof(union ofp_action) == 8);
 338
 339 /* Send packet (controller -> datapath). */
 340 struct ofp_packet_out {
 341     struct ofp_header header;
 342     ovs_be32 buffer_id;           /* ID assigned by datapath or UINT32_MAX. */
 343     ovs_be16 in_port;             /* Packet's input port (OFPP_NONE if none). */
 344     ovs_be16 actions_len;         /* Size of action array in bytes. */
 345     /* Followed by:
 346      *   - Exactly 'actions_len' bytes (possibly 0 bytes, and always a multiple
 347      *     of 8) containing actions.
 348      *   - If 'buffer_id' == UINT32_MAX, packet data to fill out the remainder
 349      *     of the message length.
 350      */
 351 };
 352 OFP_ASSERT(sizeof(struct ofp_packet_out) == 16);
 353
 354 enum ofp_flow_mod_command {
 355     OFPFC_ADD,              /* New flow. */
 356     OFPFC_MODIFY,           /* Modify all matching flows. */
 357     OFPFC_MODIFY_STRICT,    /* Modify entry strictly matching wildcards */
 358     OFPFC_DELETE,           /* Delete all matching flows. */
 359     OFPFC_DELETE_STRICT     /* Strictly match wildcards and priority. */
 360 };
 361
 362 /* Flow wildcards. */
 363 enum ofp_flow_wildcards {
 364     OFPFW_IN_PORT    = 1 << 0,  /* Switch input port. */
 365     OFPFW_DL_VLAN    = 1 << 1,  /* VLAN vid. */
 366     OFPFW_DL_SRC     = 1 << 2,  /* Ethernet source address. */
 367     OFPFW_DL_DST     = 1 << 3,  /* Ethernet destination address. */
 368     OFPFW_DL_TYPE    = 1 << 4,  /* Ethernet frame type. */
 369     OFPFW_NW_PROTO   = 1 << 5,  /* IP protocol. */
 370     OFPFW_TP_SRC     = 1 << 6,  /* TCP/UDP source port. */
 371     OFPFW_TP_DST     = 1 << 7,  /* TCP/UDP destination port. */
 372
 373     /* IP source address wildcard bit count.  0 is exact match, 1 ignores the
 374      * LSB, 2 ignores the 2 least-significant bits, ..., 32 and higher wildcard
 375      * the entire field.  This is the *opposite* of the usual convention where
 376      * e.g. /24 indicates that 8 bits (not 24 bits) are wildcarded. */
 377     OFPFW_NW_SRC_SHIFT = 8,
 378     OFPFW_NW_SRC_BITS = 6,
 379     OFPFW_NW_SRC_MASK = ((1 << OFPFW_NW_SRC_BITS) - 1) << OFPFW_NW_SRC_SHIFT,
 380     OFPFW_NW_SRC_ALL = 32 << OFPFW_NW_SRC_SHIFT,
 381
 382     /* IP destination address wildcard bit count.  Same format as source. */
 383     OFPFW_NW_DST_SHIFT = 14,
 384     OFPFW_NW_DST_BITS = 6,
 385     OFPFW_NW_DST_MASK = ((1 << OFPFW_NW_DST_BITS) - 1) << OFPFW_NW_DST_SHIFT,
 386     OFPFW_NW_DST_ALL = 32 << OFPFW_NW_DST_SHIFT,
 387
 388     OFPFW_DL_VLAN_PCP = 1 << 20, /* VLAN priority. */
 389     OFPFW_NW_TOS = 1 << 21, /* IP ToS (DSCP field, 6 bits). */
 390
 391     /* Wildcard all fields. */
 392     OFPFW_ALL = ((1 << 22) - 1)
 393 };
 394
 395 /* The wildcards for ICMP type and code fields use the transport source
 396  * and destination port fields, respectively. */
 397 #define OFPFW_ICMP_TYPE OFPFW_TP_SRC
 398 #define OFPFW_ICMP_CODE OFPFW_TP_DST
 399
 400 /* Values below this cutoff are 802.3 packets and the two bytes
 401  * following MAC addresses are used as a frame length.  Otherwise, the
 402  * two bytes are used as the Ethernet type.
 403  */
 404 #define OFP_DL_TYPE_ETH2_CUTOFF   0x0600
 405
 406 /* Value of dl_type to indicate that the frame does not include an
 407  * Ethernet type.
 408  */
 409 #define OFP_DL_TYPE_NOT_ETH_TYPE  0x05ff
 410
 411 /* The VLAN id is 12-bits, so we can use the entire 16 bits to indicate
 412  * special conditions.  All ones indicates that no VLAN id was set.
 413  */
 414 #define OFP_VLAN_NONE      0xffff
 415
 416 /* Fields to match against flows */
 417 struct ofp_match {
 418     ovs_be32 wildcards;        /* Wildcard fields. */
 419     ovs_be16 in_port;          /* Input switch port. */
 420     uint8_t dl_src[OFP_ETH_ALEN]; /* Ethernet source address. */
 421     uint8_t dl_dst[OFP_ETH_ALEN]; /* Ethernet destination address. */
 422     ovs_be16 dl_vlan;          /* Input VLAN. */
 423     uint8_t dl_vlan_pcp;       /* Input VLAN priority. */
 424     uint8_t pad1[1];           /* Align to 64-bits. */
 425     ovs_be16 dl_type;          /* Ethernet frame type. */
 426     uint8_t nw_tos;            /* IP ToS (DSCP field, 6 bits). */
 427     uint8_t nw_proto;          /* IP protocol or lower 8 bits of
 428                                   ARP opcode. */
 429     uint8_t pad2[2];           /* Align to 64-bits. */
 430     ovs_be32 nw_src;           /* IP source address. */
 431     ovs_be32 nw_dst;           /* IP destination address. */
 432     ovs_be16 tp_src;           /* TCP/UDP source port. */
 433     ovs_be16 tp_dst;           /* TCP/UDP destination port. */
 434 };
 435 OFP_ASSERT(sizeof(struct ofp_match) == 40);
 436
 437 /* Value used in "idle_timeout" and "hard_timeout" to indicate that the entry
 438  * is permanent. */
 439 #define OFP_FLOW_PERMANENT 0
 440
 441 /* By default, choose a priority in the middle. */
 442 #define OFP_DEFAULT_PRIORITY 0x8000
 443
 444 enum ofp_flow_mod_flags {
 445     OFPFF_SEND_FLOW_REM = 1 << 0,  /* Send flow removed message when flow
 446                                     * expires or is deleted. */
 447     OFPFF_CHECK_OVERLAP = 1 << 1,  /* Check for overlapping entries first. */
 448     OFPFF_EMERG         = 1 << 2   /* Ramark this is for emergency. */
 449 };
 450
 451 /* Flow setup and teardown (controller -> datapath). */
 452 struct ofp_flow_mod {
 453     struct ofp_header header;
 454     struct ofp_match match;      /* Fields to match */
 455     ovs_be64 cookie;             /* Opaque controller-issued identifier. */
 456
 457     /* Flow actions. */
 458     ovs_be16 command;             /* One of OFPFC_*. */
 459     ovs_be16 idle_timeout;        /* Idle time before discarding (seconds). */
 460     ovs_be16 hard_timeout;        /* Max time before discarding (seconds). */
 461     ovs_be16 priority;            /* Priority level of flow entry. */
 462     ovs_be32 buffer_id;           /* Buffered packet to apply to (or -1).
 463                                      Not meaningful for OFPFC_DELETE*. */
 464     ovs_be16 out_port;            /* For OFPFC_DELETE* commands, require
 465                                      matching entries to include this as an
 466                                      output port.  A value of OFPP_NONE
 467                                      indicates no restriction. */
 468     ovs_be16 flags;               /* One of OFPFF_*. */
 469     struct ofp_action_header actions[0]; /* The action length is inferred
 470                                             from the length field in the
 471                                             header. */
 472 };
 473 OFP_ASSERT(sizeof(struct ofp_flow_mod) == 72);
 474
 475 /* Why was this flow removed? */
 476 enum ofp_flow_removed_reason {
 477     OFPRR_IDLE_TIMEOUT,         /* Flow idle time exceeded idle_timeout. */
 478     OFPRR_HARD_TIMEOUT,         /* Time exceeded hard_timeout. */
 479     OFPRR_DELETE                /* Evicted by a DELETE flow mod. */
 480 };
 481
 482 /* Flow removed (datapath -> controller). */
 483 struct ofp_flow_removed {
 484     struct ofp_header header;
 485     struct ofp_match match;   /* Description of fields. */
 486     ovs_be64 cookie;          /* Opaque controller-issued identifier. */
 487
 488     ovs_be16 priority;        /* Priority level of flow entry. */
 489     uint8_t reason;           /* One of OFPRR_*. */
 490     uint8_t pad[1];           /* Align to 32-bits. */
 491
 492     ovs_be32 duration_sec;    /* Time flow was alive in seconds. */
 493     ovs_be32 duration_nsec;   /* Time flow was alive in nanoseconds beyond
 494                                  duration_sec. */
 495     ovs_be16 idle_timeout;    /* Idle timeout from original flow mod. */
 496     uint8_t pad2[2];          /* Align to 64-bits. */
 497     ovs_be64 packet_count;
 498     ovs_be64 byte_count;
 499 };
 500 OFP_ASSERT(sizeof(struct ofp_flow_removed) == 88);
 501
 502 /* OFPT_ERROR: Error message (datapath -> controller). */
 503 struct ofp_error_msg {
 504     struct ofp_header header;
 505
 506     ovs_be16 type;
 507     ovs_be16 code;
 508     uint8_t data[0];          /* Variable-length data.  Interpreted based
 509                                  on the type and code. */
 510 };
 511 OFP_ASSERT(sizeof(struct ofp_error_msg) == 12);
 512
 513 enum ofp_stats_types {
 514     /* Description of this OpenFlow switch.
 515      * The request is struct ofp_stats_msg.
 516      * The reply is struct ofp_desc_stats. */
 517     OFPST_DESC,
 518
 519     /* Individual flow statistics.
 520      * The request is struct ofp_flow_stats_request.
 521      * The reply body is an array of struct ofp_flow_stats. */
 522     OFPST_FLOW,
 523
 524     /* Aggregate flow statistics.
 525      * The request is struct ofp_flow_stats_request.
 526      * The reply is struct ofp_aggregate_stats_reply. */
 527     OFPST_AGGREGATE,
 528
 529     /* Flow table statistics.
 530      * The request is struct ofp_stats_msg.
 531      * The reply body is an array of struct ofp_table_stats. */
 532     OFPST_TABLE,
 533
 534     /* Physical port statistics.
 535      * The request is struct ofp_port_stats_request.
 536      * The reply body is an array of struct ofp_port_stats. */
 537     OFPST_PORT,
 538
 539     /* Queue statistics for a port.
 540      * The request body is struct ofp_queue_stats_request.
 541      * The reply body is an array of struct ofp_queue_stats. */
 542     OFPST_QUEUE,
 543
 544     /* Vendor extension.
 545      * The request and reply begin with "struct ofp_vendor_stats". */
 546     OFPST_VENDOR = 0xffff
 547 };
 548
 549 /* Statistics request or reply message. */
 550 struct ofp_stats_msg {
 551     struct ofp_header header;
 552     ovs_be16 type;              /* One of the OFPST_* constants. */
 553     ovs_be16 flags;             /* Requests: always 0.
 554                                  * Replies: 0 or OFPSF_REPLY_MORE. */
 555 };
 556 OFP_ASSERT(sizeof(struct ofp_stats_msg) == 12);
 557
 558 enum ofp_stats_reply_flags {
 559     OFPSF_REPLY_MORE  = 1 << 0  /* More replies to follow. */
 560 };
 561
 562 #define DESC_STR_LEN   256
 563 #define SERIAL_NUM_LEN 32
 564 /* Reply to OFPST_DESC request.  Each entry is a NULL-terminated ASCII
 565  * string. */
 566 struct ofp_desc_stats {
 567     struct ofp_stats_msg osm;
 568     char mfr_desc[DESC_STR_LEN];       /* Manufacturer description. */
 569     char hw_desc[DESC_STR_LEN];        /* Hardware description. */
 570     char sw_desc[DESC_STR_LEN];        /* Software description. */
 571     char serial_num[SERIAL_NUM_LEN];   /* Serial number. */
 572     char dp_desc[DESC_STR_LEN];        /* Human readable description of
 573                                           the datapath. */
 574 };
 575 OFP_ASSERT(sizeof(struct ofp_desc_stats) == 1068);
 576
 577 /* Stats request of type OFPST_AGGREGATE or OFPST_FLOW. */
 578 struct ofp_flow_stats_request {
 579     struct ofp_stats_msg osm;
 580     struct ofp_match match;   /* Fields to match. */
 581     uint8_t table_id;         /* ID of table to read (from ofp_table_stats)
 582                                  or 0xff for all tables. */
 583     uint8_t pad;              /* Align to 32 bits. */
 584     ovs_be16 out_port;        /* Require matching entries to include this
 585                                  as an output port.  A value of OFPP_NONE
 586                                  indicates no restriction. */
 587 };
 588 OFP_ASSERT(sizeof(struct ofp_flow_stats_request) == 56);
 589
 590 /* Body of reply to OFPST_FLOW request. */
 591 struct ofp_flow_stats {
 592     ovs_be16 length;          /* Length of this entry. */
 593     uint8_t table_id;         /* ID of table flow came from. */
 594     uint8_t pad;
 595     struct ofp_match match;   /* Description of fields. */
 596     ovs_be32 duration_sec;    /* Time flow has been alive in seconds. */
 597     ovs_be32 duration_nsec;   /* Time flow has been alive in nanoseconds
 598                                  beyond duration_sec. */
 599     ovs_be16 priority;        /* Priority of the entry. Only meaningful
 600                                  when this is not an exact-match entry. */
 601     ovs_be16 idle_timeout;    /* Number of seconds idle before expiration. */
 602     ovs_be16 hard_timeout;    /* Number of seconds before expiration. */
 603     uint8_t pad2[6];          /* Align to 64 bits. */
 604     ovs_32aligned_be64 cookie;       /* Opaque controller-issued identifier. */
 605     ovs_32aligned_be64 packet_count; /* Number of packets in flow. */
 606     ovs_32aligned_be64 byte_count;   /* Number of bytes in flow. */
 607     struct ofp_action_header actions[0]; /* Actions. */
 608 };
 609 OFP_ASSERT(sizeof(struct ofp_flow_stats) == 88);
 610
 611 /* Reply to OFPST_AGGREGATE request. */
 612 struct ofp_aggregate_stats_reply {
 613     struct ofp_stats_msg osm;
 614     ovs_32aligned_be64 packet_count; /* Number of packets in flows. */
 615     ovs_32aligned_be64 byte_count;   /* Number of bytes in flows. */
 616     ovs_be32 flow_count;      /* Number of flows. */
 617     uint8_t pad[4];           /* Align to 64 bits. */
 618 };
 619 OFP_ASSERT(sizeof(struct ofp_aggregate_stats_reply) == 36);
 620
 621 /* Body of reply to OFPST_TABLE request. */
 622 struct ofp_table_stats {
 623     uint8_t table_id;        /* Identifier of table.  Lower numbered tables
 624                                 are consulted first. */
 625     uint8_t pad[3];          /* Align to 32-bits. */
 626     char name[OFP_MAX_TABLE_NAME_LEN];
 627     ovs_be32 wildcards;      /* Bitmap of OFPFW_* wildcards that are
 628                                 supported by the table. */
 629     ovs_be32 max_entries;    /* Max number of entries supported. */
 630     ovs_be32 active_count;   /* Number of active entries. */
 631     ovs_32aligned_be64 lookup_count;  /* # of packets looked up in table. */
 632     ovs_32aligned_be64 matched_count; /* Number of packets that hit table. */
 633 };
 634 OFP_ASSERT(sizeof(struct ofp_table_stats) == 64);
 635
 636 /* Stats request of type OFPST_PORT. */
 637 struct ofp_port_stats_request {
 638     struct ofp_stats_msg osm;
 639     ovs_be16 port_no;        /* OFPST_PORT message may request statistics
 640                                 for a single port (specified with port_no)
 641                                 or for all ports (port_no == OFPP_NONE). */
 642     uint8_t pad[6];
 643 };
 644 OFP_ASSERT(sizeof(struct ofp_port_stats_request) == 20);
 645
 646 /* Body of reply to OFPST_PORT request. If a counter is unsupported, set
 647  * the field to all ones. */
 648 struct ofp_port_stats {
 649     ovs_be16 port_no;
 650     uint8_t pad[6];          /* Align to 64-bits. */
 651     ovs_32aligned_be64 rx_packets;     /* Number of received packets. */
 652     ovs_32aligned_be64 tx_packets;     /* Number of transmitted packets. */
 653     ovs_32aligned_be64 rx_bytes;       /* Number of received bytes. */
 654     ovs_32aligned_be64 tx_bytes;       /* Number of transmitted bytes. */
 655     ovs_32aligned_be64 rx_dropped;     /* Number of packets dropped by RX. */
 656     ovs_32aligned_be64 tx_dropped;     /* Number of packets dropped by TX. */
 657     ovs_32aligned_be64 rx_errors; /* Number of receive errors.  This is a
 658                                      super-set of receive errors and should be
 659                                      great than or equal to the sum of all
 660                                      rx_*_err values. */
 661     ovs_32aligned_be64 tx_errors; /* Number of transmit errors.  This is a
 662                                      super-set of transmit errors. */
 663     ovs_32aligned_be64 rx_frame_err; /* Number of frame alignment errors. */
 664     ovs_32aligned_be64 rx_over_err;  /* Number of packets with RX overrun. */
 665     ovs_32aligned_be64 rx_crc_err;   /* Number of CRC errors. */
 666     ovs_32aligned_be64 collisions;   /* Number of collisions. */
 667 };
 668 OFP_ASSERT(sizeof(struct ofp_port_stats) == 104);
 669
 670 /* All ones is used to indicate all queues in a port (for stats retrieval). */
 671 #define OFPQ_ALL      0xffffffff
 672
 673 /* Body for stats request of type OFPST_QUEUE. */
 674 struct ofp_queue_stats_request {
 675     struct ofp_stats_msg osm;
 676     ovs_be16 port_no;        /* All ports if OFPP_ALL. */
 677     uint8_t pad[2];          /* Align to 32-bits. */
 678     ovs_be32 queue_id;       /* All queues if OFPQ_ALL. */
 679 };
 680 OFP_ASSERT(sizeof(struct ofp_queue_stats_request) == 20);
 681
 682 /* Body for stats reply of type OFPST_QUEUE consists of an array of this
 683  * structure type. */
 684 struct ofp_queue_stats {
 685     ovs_be16 port_no;
 686     uint8_t pad[2];          /* Align to 32-bits. */
 687     ovs_be32 queue_id;       /* Queue id. */
 688     ovs_32aligned_be64 tx_bytes;   /* Number of transmitted bytes. */
 689     ovs_32aligned_be64 tx_packets; /* Number of transmitted packets. */
 690     ovs_32aligned_be64 tx_errors;  /* # of packets dropped due to overrun. */
 691 };
 692 OFP_ASSERT(sizeof(struct ofp_queue_stats) == 32);
 693
 694 /* Vendor extension stats message. */
 695 struct ofp_vendor_stats_msg {
 696     struct ofp_stats_msg osm;   /* Type OFPST_VENDOR. */
 697     ovs_be32 vendor;            /* Vendor ID:
 698                                  * - MSB 0: low-order bytes are IEEE OUI.
 699                                  * - MSB != 0: defined by OpenFlow
 700                                  *   consortium. */
 701     /* Followed by vendor-defined arbitrary additional data. */
 702 };
 703 OFP_ASSERT(sizeof(struct ofp_vendor_stats_msg) == 16);
 704
 705 /* Vendor extension. */
 706 struct ofp_vendor_header {
 707     struct ofp_header header;   /* Type OFPT_VENDOR. */
 708     ovs_be32 vendor;            /* Vendor ID:
 709                                  * - MSB 0: low-order bytes are IEEE OUI.
 710                                  * - MSB != 0: defined by OpenFlow
 711                                  *   consortium. */
 712     /* Vendor-defined arbitrary additional data. */
 713 };
 714 OFP_ASSERT(sizeof(struct ofp_vendor_header) == 12);
 715
 716 #endif /* openflow/openflow-1.0.h */