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 /* Allow datapath to associate multiple Netlink PIDs to each vport */ 122 #define OVS_DP_F_VPORT_PIDS (1 << 1) 123 124 /* Fixed logical ports. */ 125 #define OVSP_LOCAL ((__u32)0) 126 127 /* Packet transfer. */ 128 129 #define OVS_PACKET_FAMILY "ovs_packet" 130 #define OVS_PACKET_VERSION 0x1 131 132 enum ovs_packet_cmd { 133 OVS_PACKET_CMD_UNSPEC, 134 135 /* Kernel-to-user notifications. */ 136 OVS_PACKET_CMD_MISS, /* Flow table miss. */ 137 OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */ 138 139 /* Userspace commands. */ 140 OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */ 141 }; 142 143 /** 144 * enum ovs_packet_attr - attributes for %OVS_PACKET_* commands. 145 * @OVS_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire 146 * packet as received, from the start of the Ethernet header onward. For 147 * %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by 148 * actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is 149 * the flow key extracted from the packet as originally received. 150 * @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key 151 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows 152 * userspace to adapt its flow setup strategy by comparing its notion of the 153 * flow key against the kernel's. 154 * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used 155 * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes. 156 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION 157 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an 158 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content 159 * specified there. 160 * 161 * These attributes follow the &struct ovs_header within the Generic Netlink 162 * payload for %OVS_PACKET_* commands. 163 */ 164 enum ovs_packet_attr { 165 OVS_PACKET_ATTR_UNSPEC, 166 OVS_PACKET_ATTR_PACKET, /* Packet data. */ 167 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */ 168 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 169 OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */ 170 __OVS_PACKET_ATTR_MAX 171 }; 172 173 #define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1) 174 175 /* Virtual ports. */ 176 177 #define OVS_VPORT_FAMILY "ovs_vport" 178 #define OVS_VPORT_MCGROUP "ovs_vport" 179 #define OVS_VPORT_VERSION 0x1 180 181 enum ovs_vport_cmd { 182 OVS_VPORT_CMD_UNSPEC, 183 OVS_VPORT_CMD_NEW, 184 OVS_VPORT_CMD_DEL, 185 OVS_VPORT_CMD_GET, 186 OVS_VPORT_CMD_SET 187 }; 188 189 enum ovs_vport_type { 190 OVS_VPORT_TYPE_UNSPEC, 191 OVS_VPORT_TYPE_NETDEV, /* network device */ 192 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */ 193 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */ 194 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */ 195 __OVS_VPORT_TYPE_MAX 196 }; 197 198 #define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1) 199 200 /** 201 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands. 202 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath. 203 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type 204 * of vport. 205 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device 206 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes 207 * plus a null terminator. 208 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information. 209 * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace 210 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets 211 * received on this port. If this is a single-element array of value 0, 212 * upcalls should not be sent. 213 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for 214 * packets sent or received through the vport. 215 * 216 * These attributes follow the &struct ovs_header within the Generic Netlink 217 * payload for %OVS_VPORT_* commands. 218 * 219 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and 220 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is 221 * optional; if not specified a free port number is automatically selected. 222 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type 223 * of vport. 224 * 225 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to 226 * look up the vport to operate on; otherwise dp_idx from the &struct 227 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport. 228 */ 229 enum ovs_vport_attr { 230 OVS_VPORT_ATTR_UNSPEC, 231 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */ 232 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */ 233 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */ 234 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */ 235 OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */ 236 /* receiving upcalls */ 237 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */ 238 __OVS_VPORT_ATTR_MAX 239 }; 240 241 #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1) 242 243 /* OVS_VPORT_ATTR_OPTIONS attributes for tunnels. 244 */ 245 enum { 246 OVS_TUNNEL_ATTR_UNSPEC, 247 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */ 248 __OVS_TUNNEL_ATTR_MAX 249 }; 250 251 #define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1) 252 253 /* Flows. */ 254 255 #define OVS_FLOW_FAMILY "ovs_flow" 256 #define OVS_FLOW_MCGROUP "ovs_flow" 257 #define OVS_FLOW_VERSION 0x1 258 259 enum ovs_flow_cmd { 260 OVS_FLOW_CMD_UNSPEC, 261 OVS_FLOW_CMD_NEW, 262 OVS_FLOW_CMD_DEL, 263 OVS_FLOW_CMD_GET, 264 OVS_FLOW_CMD_SET 265 }; 266 267 struct ovs_flow_stats { 268 __u64 n_packets; /* Number of matched packets. */ 269 __u64 n_bytes; /* Number of matched bytes. */ 270 }; 271 272 enum ovs_key_attr { 273 OVS_KEY_ATTR_UNSPEC, 274 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */ 275 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */ 276 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */ 277 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */ 278 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */ 279 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */ 280 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */ 281 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */ 282 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */ 283 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */ 284 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */ 285 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */ 286 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */ 287 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */ 288 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */ 289 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */ 290 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */ 291 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */ 292 293 #ifdef __KERNEL__ 294 OVS_KEY_ATTR_IPV4_TUNNEL, /* struct ovs_key_ipv4_tunnel */ 295 #endif 296 __OVS_KEY_ATTR_MAX 297 }; 298 299 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1) 300 301 enum ovs_tunnel_key_attr { 302 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */ 303 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */ 304 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */ 305 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */ 306 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */ 307 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */ 308 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */ 309 __OVS_TUNNEL_KEY_ATTR_MAX 310 }; 311 312 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1) 313 314 /** 315 * enum ovs_frag_type - IPv4 and IPv6 fragment type 316 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment. 317 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0. 318 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset. 319 * 320 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct 321 * ovs_key_ipv6. 322 */ 323 enum ovs_frag_type { 324 OVS_FRAG_TYPE_NONE, 325 OVS_FRAG_TYPE_FIRST, 326 OVS_FRAG_TYPE_LATER, 327 __OVS_FRAG_TYPE_MAX 328 }; 329 330 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1) 331 332 struct ovs_key_ethernet { 333 __u8 eth_src[ETH_ALEN]; 334 __u8 eth_dst[ETH_ALEN]; 335 }; 336 337 struct ovs_key_ipv4 { 338 __be32 ipv4_src; 339 __be32 ipv4_dst; 340 __u8 ipv4_proto; 341 __u8 ipv4_tos; 342 __u8 ipv4_ttl; 343 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */ 344 }; 345 346 struct ovs_key_ipv6 { 347 __be32 ipv6_src[4]; 348 __be32 ipv6_dst[4]; 349 __be32 ipv6_label; /* 20-bits in least-significant bits. */ 350 __u8 ipv6_proto; 351 __u8 ipv6_tclass; 352 __u8 ipv6_hlimit; 353 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */ 354 }; 355 356 struct ovs_key_tcp { 357 __be16 tcp_src; 358 __be16 tcp_dst; 359 }; 360 361 struct ovs_key_udp { 362 __be16 udp_src; 363 __be16 udp_dst; 364 }; 365 366 struct ovs_key_sctp { 367 __be16 sctp_src; 368 __be16 sctp_dst; 369 }; 370 371 struct ovs_key_icmp { 372 __u8 icmp_type; 373 __u8 icmp_code; 374 }; 375 376 struct ovs_key_icmpv6 { 377 __u8 icmpv6_type; 378 __u8 icmpv6_code; 379 }; 380 381 struct ovs_key_arp { 382 __be32 arp_sip; 383 __be32 arp_tip; 384 __be16 arp_op; 385 __u8 arp_sha[ETH_ALEN]; 386 __u8 arp_tha[ETH_ALEN]; 387 }; 388 389 struct ovs_key_nd { 390 __u32 nd_target[4]; 391 __u8 nd_sll[ETH_ALEN]; 392 __u8 nd_tll[ETH_ALEN]; 393 }; 394 395 /** 396 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands. 397 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow 398 * key. Always present in notifications. Required for all requests (except 399 * dumps). 400 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying 401 * the actions to take for packets that match the key. Always present in 402 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for 403 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without 404 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions, 405 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given. 406 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this 407 * flow. Present in notifications if the stats would be nonzero. Ignored in 408 * requests. 409 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the 410 * TCP flags seen on packets in this flow. Only present in notifications for 411 * TCP flows, and only if it would be nonzero. Ignored in requests. 412 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on 413 * the system monotonic clock, at which a packet was last processed for this 414 * flow. Only present in notifications if a packet has been processed for this 415 * flow. Ignored in requests. 416 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the 417 * last-used time, accumulated TCP flags, and statistics for this flow. 418 * Otherwise ignored in requests. Never present in notifications. 419 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the 420 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact 421 * match with corresponding flow key bit, while mask bit value '0' specifies 422 * a wildcarded match. Omitting attribute is treated as wildcarding all 423 * corresponding fields. Optional for all requests. If not present, 424 * all flow key bits are exact match bits. 425 * 426 * These attributes follow the &struct ovs_header within the Generic Netlink 427 * payload for %OVS_FLOW_* commands. 428 */ 429 enum ovs_flow_attr { 430 OVS_FLOW_ATTR_UNSPEC, 431 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */ 432 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 433 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */ 434 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */ 435 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */ 436 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */ 437 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */ 438 __OVS_FLOW_ATTR_MAX 439 }; 440 441 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1) 442 443 /** 444 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action. 445 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with 446 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of 447 * %UINT32_MAX samples all packets and intermediate values sample intermediate 448 * fractions of packets. 449 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event. 450 * Actions are passed as nested attributes. 451 * 452 * Executes the specified actions with the given probability on a per-packet 453 * basis. 454 */ 455 enum ovs_sample_attr { 456 OVS_SAMPLE_ATTR_UNSPEC, 457 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */ 458 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 459 __OVS_SAMPLE_ATTR_MAX, 460 }; 461 462 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1) 463 464 /** 465 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action. 466 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION 467 * message should be sent. Required. 468 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is 469 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA. 470 */ 471 enum ovs_userspace_attr { 472 OVS_USERSPACE_ATTR_UNSPEC, 473 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */ 474 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */ 475 __OVS_USERSPACE_ATTR_MAX 476 }; 477 478 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1) 479 480 /** 481 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument. 482 * @vlan_tpid: Tag protocol identifier (TPID) to push. 483 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set 484 * (but it will not be set in the 802.1Q header that is pushed). 485 * 486 * The @vlan_tpid value is typically %ETH_P_8021Q. The only acceptable TPID 487 * values are those that the kernel module also parses as 802.1Q headers, to 488 * prevent %OVS_ACTION_ATTR_PUSH_VLAN followed by %OVS_ACTION_ATTR_POP_VLAN 489 * from having surprising results. 490 */ 491 struct ovs_action_push_vlan { 492 __be16 vlan_tpid; /* 802.1Q TPID. */ 493 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */ 494 }; 495 496 /** 497 * enum ovs_action_attr - Action types. 498 * 499 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port. 500 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested 501 * %OVS_USERSPACE_ATTR_* attributes. 502 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The 503 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its 504 * value. 505 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q header onto the 506 * packet. 507 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q header off the packet. 508 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in 509 * the nested %OVS_SAMPLE_ATTR_* attributes. 510 * 511 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all 512 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment 513 * type may not be changed. 514 */ 515 516 enum ovs_action_attr { 517 OVS_ACTION_ATTR_UNSPEC, 518 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */ 519 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */ 520 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */ 521 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */ 522 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */ 523 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */ 524 __OVS_ACTION_ATTR_MAX 525 }; 526 527 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1) 528 529 #endif /* _LINUX_OPENVSWITCH_H */ 530