1 2 /* 3 * Copyright (c) 2007-2013 Nicira, Inc. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of version 2 of the GNU General Public 7 * License as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, but 10 * WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 17 * 02110-1301, USA 18 */ 19 20 #ifndef _UAPI__LINUX_OPENVSWITCH_H 21 #define _UAPI__LINUX_OPENVSWITCH_H 1 22 23 #include <linux/types.h> 24 #include <linux/if_ether.h> 25 26 /** 27 * struct ovs_header - header for OVS Generic Netlink messages. 28 * @dp_ifindex: ifindex of local port for datapath (0 to make a request not 29 * specific to a datapath). 30 * 31 * Attributes following the header are specific to a particular OVS Generic 32 * Netlink family, but all of the OVS families use this header. 33 */ 34 35 struct ovs_header { 36 int dp_ifindex; 37 }; 38 39 /* Datapaths. */ 40 41 #define OVS_DATAPATH_FAMILY "ovs_datapath" 42 #define OVS_DATAPATH_MCGROUP "ovs_datapath" 43 44 /* V2: 45 * - API users are expected to provide OVS_DP_ATTR_USER_FEATURES 46 * when creating the datapath. 47 */ 48 #define OVS_DATAPATH_VERSION 2 49 50 /* First OVS datapath version to support features */ 51 #define OVS_DP_VER_FEATURES 2 52 53 enum ovs_datapath_cmd { 54 OVS_DP_CMD_UNSPEC, 55 OVS_DP_CMD_NEW, 56 OVS_DP_CMD_DEL, 57 OVS_DP_CMD_GET, 58 OVS_DP_CMD_SET 59 }; 60 61 /** 62 * enum ovs_datapath_attr - attributes for %OVS_DP_* commands. 63 * @OVS_DP_ATTR_NAME: Name of the network device that serves as the "local 64 * port". This is the name of the network device whose dp_ifindex is given in 65 * the &struct ovs_header. Always present in notifications. Required in 66 * %OVS_DP_NEW requests. May be used as an alternative to specifying 67 * dp_ifindex in other requests (with a dp_ifindex of 0). 68 * @OVS_DP_ATTR_UPCALL_PID: The Netlink socket in userspace that is initially 69 * set on the datapath port (for OVS_ACTION_ATTR_MISS). Only valid on 70 * %OVS_DP_CMD_NEW requests. A value of zero indicates that upcalls should 71 * not be sent. 72 * @OVS_DP_ATTR_STATS: Statistics about packets that have passed through the 73 * datapath. Always present in notifications. 74 * @OVS_DP_ATTR_MEGAFLOW_STATS: Statistics about mega flow masks usage for the 75 * datapath. Always present in notifications. 76 * 77 * These attributes follow the &struct ovs_header within the Generic Netlink 78 * payload for %OVS_DP_* commands. 79 */ 80 enum ovs_datapath_attr { 81 OVS_DP_ATTR_UNSPEC, 82 OVS_DP_ATTR_NAME, /* name of dp_ifindex netdev */ 83 OVS_DP_ATTR_UPCALL_PID, /* Netlink PID to receive upcalls */ 84 OVS_DP_ATTR_STATS, /* struct ovs_dp_stats */ 85 OVS_DP_ATTR_MEGAFLOW_STATS, /* struct ovs_dp_megaflow_stats */ 86 OVS_DP_ATTR_USER_FEATURES, /* OVS_DP_F_* */ 87 __OVS_DP_ATTR_MAX 88 }; 89 90 #define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1) 91 92 struct ovs_dp_stats { 93 __u64 n_hit; /* Number of flow table matches. */ 94 __u64 n_missed; /* Number of flow table misses. */ 95 __u64 n_lost; /* Number of misses not sent to userspace. */ 96 __u64 n_flows; /* Number of flows present */ 97 }; 98 99 struct ovs_dp_megaflow_stats { 100 __u64 n_mask_hit; /* Number of masks used for flow lookups. */ 101 __u32 n_masks; /* Number of masks for the datapath. */ 102 __u32 pad0; /* Pad for future expension. */ 103 __u64 pad1; /* Pad for future expension. */ 104 __u64 pad2; /* Pad for future expension. */ 105 }; 106 107 struct ovs_vport_stats { 108 __u64 rx_packets; /* total packets received */ 109 __u64 tx_packets; /* total packets transmitted */ 110 __u64 rx_bytes; /* total bytes received */ 111 __u64 tx_bytes; /* total bytes transmitted */ 112 __u64 rx_errors; /* bad packets received */ 113 __u64 tx_errors; /* packet transmit problems */ 114 __u64 rx_dropped; /* no space in linux buffers */ 115 __u64 tx_dropped; /* no space available in linux */ 116 }; 117 118 /* Allow last Netlink attribute to be unaligned */ 119 #define OVS_DP_F_UNALIGNED (1 << 0) 120 121 /* Fixed logical ports. */ 122 #define OVSP_LOCAL ((__u32)0) 123 124 /* Packet transfer. */ 125 126 #define OVS_PACKET_FAMILY "ovs_packet" 127 #define OVS_PACKET_VERSION 0x1 128 129 enum ovs_packet_cmd { 130 OVS_PACKET_CMD_UNSPEC, 131 132 /* Kernel-to-user notifications. */ 133 OVS_PACKET_CMD_MISS, /* Flow table miss. */ 134 OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */ 135 136 /* Userspace commands. */ 137 OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */ 138 }; 139 140 /** 141 * enum ovs_packet_attr - attributes for %OVS_PACKET_* commands. 142 * @OVS_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire 143 * packet as received, from the start of the Ethernet header onward. For 144 * %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by 145 * actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is 146 * the flow key extracted from the packet as originally received. 147 * @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key 148 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows 149 * userspace to adapt its flow setup strategy by comparing its notion of the 150 * flow key against the kernel's. 151 * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used 152 * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes. 153 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION 154 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an 155 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content 156 * specified there. 157 * 158 * These attributes follow the &struct ovs_header within the Generic Netlink 159 * payload for %OVS_PACKET_* commands. 160 */ 161 enum ovs_packet_attr { 162 OVS_PACKET_ATTR_UNSPEC, 163 OVS_PACKET_ATTR_PACKET, /* Packet data. */ 164 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */ 165 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 166 OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */ 167 __OVS_PACKET_ATTR_MAX 168 }; 169 170 #define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1) 171 172 /* Virtual ports. */ 173 174 #define OVS_VPORT_FAMILY "ovs_vport" 175 #define OVS_VPORT_MCGROUP "ovs_vport" 176 #define OVS_VPORT_VERSION 0x1 177 178 enum ovs_vport_cmd { 179 OVS_VPORT_CMD_UNSPEC, 180 OVS_VPORT_CMD_NEW, 181 OVS_VPORT_CMD_DEL, 182 OVS_VPORT_CMD_GET, 183 OVS_VPORT_CMD_SET 184 }; 185 186 enum ovs_vport_type { 187 OVS_VPORT_TYPE_UNSPEC, 188 OVS_VPORT_TYPE_NETDEV, /* network device */ 189 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */ 190 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */ 191 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */ 192 __OVS_VPORT_TYPE_MAX 193 }; 194 195 #define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1) 196 197 /** 198 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands. 199 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath. 200 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type 201 * of vport. 202 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device 203 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes 204 * plus a null terminator. 205 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information. 206 * @OVS_VPORT_ATTR_UPCALL_PID: The Netlink socket in userspace that 207 * OVS_PACKET_CMD_MISS upcalls will be directed to for packets received on 208 * this port. A value of zero indicates that upcalls should not be sent. 209 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for 210 * packets sent or received through the vport. 211 * 212 * These attributes follow the &struct ovs_header within the Generic Netlink 213 * payload for %OVS_VPORT_* commands. 214 * 215 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and 216 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is 217 * optional; if not specified a free port number is automatically selected. 218 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type 219 * of vport. 220 * 221 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to 222 * look up the vport to operate on; otherwise dp_idx from the &struct 223 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport. 224 */ 225 enum ovs_vport_attr { 226 OVS_VPORT_ATTR_UNSPEC, 227 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */ 228 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */ 229 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */ 230 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */ 231 OVS_VPORT_ATTR_UPCALL_PID, /* u32 Netlink PID to receive upcalls */ 232 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */ 233 __OVS_VPORT_ATTR_MAX 234 }; 235 236 #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1) 237 238 /* OVS_VPORT_ATTR_OPTIONS attributes for tunnels. 239 */ 240 enum { 241 OVS_TUNNEL_ATTR_UNSPEC, 242 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */ 243 __OVS_TUNNEL_ATTR_MAX 244 }; 245 246 #define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1) 247 248 /* Flows. */ 249 250 #define OVS_FLOW_FAMILY "ovs_flow" 251 #define OVS_FLOW_MCGROUP "ovs_flow" 252 #define OVS_FLOW_VERSION 0x1 253 254 enum ovs_flow_cmd { 255 OVS_FLOW_CMD_UNSPEC, 256 OVS_FLOW_CMD_NEW, 257 OVS_FLOW_CMD_DEL, 258 OVS_FLOW_CMD_GET, 259 OVS_FLOW_CMD_SET 260 }; 261 262 struct ovs_flow_stats { 263 __u64 n_packets; /* Number of matched packets. */ 264 __u64 n_bytes; /* Number of matched bytes. */ 265 }; 266 267 enum ovs_key_attr { 268 OVS_KEY_ATTR_UNSPEC, 269 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */ 270 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */ 271 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */ 272 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */ 273 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */ 274 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */ 275 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */ 276 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */ 277 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */ 278 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */ 279 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */ 280 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */ 281 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */ 282 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */ 283 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */ 284 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */ 285 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */ 286 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */ 287 288 #ifdef __KERNEL__ 289 OVS_KEY_ATTR_IPV4_TUNNEL, /* struct ovs_key_ipv4_tunnel */ 290 #endif 291 __OVS_KEY_ATTR_MAX 292 }; 293 294 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1) 295 296 enum ovs_tunnel_key_attr { 297 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */ 298 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */ 299 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */ 300 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */ 301 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */ 302 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */ 303 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */ 304 __OVS_TUNNEL_KEY_ATTR_MAX 305 }; 306 307 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1) 308 309 /** 310 * enum ovs_frag_type - IPv4 and IPv6 fragment type 311 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment. 312 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0. 313 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset. 314 * 315 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct 316 * ovs_key_ipv6. 317 */ 318 enum ovs_frag_type { 319 OVS_FRAG_TYPE_NONE, 320 OVS_FRAG_TYPE_FIRST, 321 OVS_FRAG_TYPE_LATER, 322 __OVS_FRAG_TYPE_MAX 323 }; 324 325 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1) 326 327 struct ovs_key_ethernet { 328 __u8 eth_src[ETH_ALEN]; 329 __u8 eth_dst[ETH_ALEN]; 330 }; 331 332 struct ovs_key_ipv4 { 333 __be32 ipv4_src; 334 __be32 ipv4_dst; 335 __u8 ipv4_proto; 336 __u8 ipv4_tos; 337 __u8 ipv4_ttl; 338 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */ 339 }; 340 341 struct ovs_key_ipv6 { 342 __be32 ipv6_src[4]; 343 __be32 ipv6_dst[4]; 344 __be32 ipv6_label; /* 20-bits in least-significant bits. */ 345 __u8 ipv6_proto; 346 __u8 ipv6_tclass; 347 __u8 ipv6_hlimit; 348 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */ 349 }; 350 351 struct ovs_key_tcp { 352 __be16 tcp_src; 353 __be16 tcp_dst; 354 }; 355 356 struct ovs_key_udp { 357 __be16 udp_src; 358 __be16 udp_dst; 359 }; 360 361 struct ovs_key_sctp { 362 __be16 sctp_src; 363 __be16 sctp_dst; 364 }; 365 366 struct ovs_key_icmp { 367 __u8 icmp_type; 368 __u8 icmp_code; 369 }; 370 371 struct ovs_key_icmpv6 { 372 __u8 icmpv6_type; 373 __u8 icmpv6_code; 374 }; 375 376 struct ovs_key_arp { 377 __be32 arp_sip; 378 __be32 arp_tip; 379 __be16 arp_op; 380 __u8 arp_sha[ETH_ALEN]; 381 __u8 arp_tha[ETH_ALEN]; 382 }; 383 384 struct ovs_key_nd { 385 __u32 nd_target[4]; 386 __u8 nd_sll[ETH_ALEN]; 387 __u8 nd_tll[ETH_ALEN]; 388 }; 389 390 /** 391 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands. 392 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow 393 * key. Always present in notifications. Required for all requests (except 394 * dumps). 395 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying 396 * the actions to take for packets that match the key. Always present in 397 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for 398 * %OVS_FLOW_CMD_SET requests. 399 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this 400 * flow. Present in notifications if the stats would be nonzero. Ignored in 401 * requests. 402 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the 403 * TCP flags seen on packets in this flow. Only present in notifications for 404 * TCP flows, and only if it would be nonzero. Ignored in requests. 405 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on 406 * the system monotonic clock, at which a packet was last processed for this 407 * flow. Only present in notifications if a packet has been processed for this 408 * flow. Ignored in requests. 409 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the 410 * last-used time, accumulated TCP flags, and statistics for this flow. 411 * Otherwise ignored in requests. Never present in notifications. 412 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the 413 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact 414 * match with corresponding flow key bit, while mask bit value '0' specifies 415 * a wildcarded match. Omitting attribute is treated as wildcarding all 416 * corresponding fields. Optional for all requests. If not present, 417 * all flow key bits are exact match bits. 418 * 419 * These attributes follow the &struct ovs_header within the Generic Netlink 420 * payload for %OVS_FLOW_* commands. 421 */ 422 enum ovs_flow_attr { 423 OVS_FLOW_ATTR_UNSPEC, 424 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */ 425 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 426 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */ 427 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */ 428 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */ 429 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */ 430 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */ 431 __OVS_FLOW_ATTR_MAX 432 }; 433 434 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1) 435 436 /** 437 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action. 438 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with 439 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of 440 * %UINT32_MAX samples all packets and intermediate values sample intermediate 441 * fractions of packets. 442 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event. 443 * Actions are passed as nested attributes. 444 * 445 * Executes the specified actions with the given probability on a per-packet 446 * basis. 447 */ 448 enum ovs_sample_attr { 449 OVS_SAMPLE_ATTR_UNSPEC, 450 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */ 451 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 452 __OVS_SAMPLE_ATTR_MAX, 453 }; 454 455 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1) 456 457 /** 458 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action. 459 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION 460 * message should be sent. Required. 461 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is 462 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA. 463 */ 464 enum ovs_userspace_attr { 465 OVS_USERSPACE_ATTR_UNSPEC, 466 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */ 467 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */ 468 __OVS_USERSPACE_ATTR_MAX 469 }; 470 471 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1) 472 473 /** 474 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument. 475 * @vlan_tpid: Tag protocol identifier (TPID) to push. 476 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set 477 * (but it will not be set in the 802.1Q header that is pushed). 478 * 479 * The @vlan_tpid value is typically %ETH_P_8021Q. The only acceptable TPID 480 * values are those that the kernel module also parses as 802.1Q headers, to 481 * prevent %OVS_ACTION_ATTR_PUSH_VLAN followed by %OVS_ACTION_ATTR_POP_VLAN 482 * from having surprising results. 483 */ 484 struct ovs_action_push_vlan { 485 __be16 vlan_tpid; /* 802.1Q TPID. */ 486 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */ 487 }; 488 489 /** 490 * enum ovs_action_attr - Action types. 491 * 492 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port. 493 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested 494 * %OVS_USERSPACE_ATTR_* attributes. 495 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The 496 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its 497 * value. 498 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q header onto the 499 * packet. 500 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q header off the packet. 501 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in 502 * the nested %OVS_SAMPLE_ATTR_* attributes. 503 * 504 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all 505 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment 506 * type may not be changed. 507 */ 508 509 enum ovs_action_attr { 510 OVS_ACTION_ATTR_UNSPEC, 511 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */ 512 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */ 513 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */ 514 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */ 515 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */ 516 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */ 517 __OVS_ACTION_ATTR_MAX 518 }; 519 520 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1) 521 522 #endif /* _LINUX_OPENVSWITCH_H */ 523