1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 3 /* 4 * Copyright (c) 2007-2017 Nicira, Inc. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of version 2 of the GNU General Public 8 * License as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18 * 02110-1301, USA 19 */ 20 21 #ifndef _UAPI__LINUX_OPENVSWITCH_H 22 #define _UAPI__LINUX_OPENVSWITCH_H 1 23 24 #include <linux/types.h> 25 #include <linux/if_ether.h> 26 27 /** 28 * struct ovs_header - header for OVS Generic Netlink messages. 29 * @dp_ifindex: ifindex of local port for datapath (0 to make a request not 30 * specific to a datapath). 31 * 32 * Attributes following the header are specific to a particular OVS Generic 33 * Netlink family, but all of the OVS families use this header. 34 */ 35 36 struct ovs_header { 37 int dp_ifindex; 38 }; 39 40 /* Datapaths. */ 41 42 #define OVS_DATAPATH_FAMILY "ovs_datapath" 43 #define OVS_DATAPATH_MCGROUP "ovs_datapath" 44 45 /* V2: 46 * - API users are expected to provide OVS_DP_ATTR_USER_FEATURES 47 * when creating the datapath. 48 */ 49 #define OVS_DATAPATH_VERSION 2 50 51 /* First OVS datapath version to support features */ 52 #define OVS_DP_VER_FEATURES 2 53 54 enum ovs_datapath_cmd { 55 OVS_DP_CMD_UNSPEC, 56 OVS_DP_CMD_NEW, 57 OVS_DP_CMD_DEL, 58 OVS_DP_CMD_GET, 59 OVS_DP_CMD_SET 60 }; 61 62 /** 63 * enum ovs_datapath_attr - attributes for %OVS_DP_* commands. 64 * @OVS_DP_ATTR_NAME: Name of the network device that serves as the "local 65 * port". This is the name of the network device whose dp_ifindex is given in 66 * the &struct ovs_header. Always present in notifications. Required in 67 * %OVS_DP_NEW requests. May be used as an alternative to specifying 68 * dp_ifindex in other requests (with a dp_ifindex of 0). 69 * @OVS_DP_ATTR_UPCALL_PID: The Netlink socket in userspace that is initially 70 * set on the datapath port (for OVS_ACTION_ATTR_MISS). Only valid on 71 * %OVS_DP_CMD_NEW requests. A value of zero indicates that upcalls should 72 * not be sent. 73 * @OVS_DP_ATTR_PER_CPU_PIDS: Per-cpu array of PIDs for upcalls when 74 * OVS_DP_F_DISPATCH_UPCALL_PER_CPU feature is set. 75 * @OVS_DP_ATTR_STATS: Statistics about packets that have passed through the 76 * datapath. Always present in notifications. 77 * @OVS_DP_ATTR_MEGAFLOW_STATS: Statistics about mega flow masks usage for the 78 * datapath. Always present in notifications. 79 * 80 * These attributes follow the &struct ovs_header within the Generic Netlink 81 * payload for %OVS_DP_* commands. 82 */ 83 enum ovs_datapath_attr { 84 OVS_DP_ATTR_UNSPEC, 85 OVS_DP_ATTR_NAME, /* name of dp_ifindex netdev */ 86 OVS_DP_ATTR_UPCALL_PID, /* Netlink PID to receive upcalls */ 87 OVS_DP_ATTR_STATS, /* struct ovs_dp_stats */ 88 OVS_DP_ATTR_MEGAFLOW_STATS, /* struct ovs_dp_megaflow_stats */ 89 OVS_DP_ATTR_USER_FEATURES, /* OVS_DP_F_* */ 90 OVS_DP_ATTR_PAD, 91 OVS_DP_ATTR_MASKS_CACHE_SIZE, 92 OVS_DP_ATTR_PER_CPU_PIDS, /* Netlink PIDS to receive upcalls in 93 * per-cpu dispatch mode 94 */ 95 __OVS_DP_ATTR_MAX 96 }; 97 98 #define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1) 99 100 struct ovs_dp_stats { 101 __u64 n_hit; /* Number of flow table matches. */ 102 __u64 n_missed; /* Number of flow table misses. */ 103 __u64 n_lost; /* Number of misses not sent to userspace. */ 104 __u64 n_flows; /* Number of flows present */ 105 }; 106 107 struct ovs_dp_megaflow_stats { 108 __u64 n_mask_hit; /* Number of masks used for flow lookups. */ 109 __u32 n_masks; /* Number of masks for the datapath. */ 110 __u32 pad0; /* Pad for future expension. */ 111 __u64 n_cache_hit; /* Number of cache matches for flow lookups. */ 112 __u64 pad1; /* Pad for future expension. */ 113 }; 114 115 struct ovs_vport_stats { 116 __u64 rx_packets; /* total packets received */ 117 __u64 tx_packets; /* total packets transmitted */ 118 __u64 rx_bytes; /* total bytes received */ 119 __u64 tx_bytes; /* total bytes transmitted */ 120 __u64 rx_errors; /* bad packets received */ 121 __u64 tx_errors; /* packet transmit problems */ 122 __u64 rx_dropped; /* no space in linux buffers */ 123 __u64 tx_dropped; /* no space available in linux */ 124 }; 125 126 /* Allow last Netlink attribute to be unaligned */ 127 #define OVS_DP_F_UNALIGNED (1 << 0) 128 129 /* Allow datapath to associate multiple Netlink PIDs to each vport */ 130 #define OVS_DP_F_VPORT_PIDS (1 << 1) 131 132 /* Allow tc offload recirc sharing */ 133 #define OVS_DP_F_TC_RECIRC_SHARING (1 << 2) 134 135 /* Allow per-cpu dispatch of upcalls */ 136 #define OVS_DP_F_DISPATCH_UPCALL_PER_CPU (1 << 3) 137 138 /* Fixed logical ports. */ 139 #define OVSP_LOCAL ((__u32)0) 140 141 /* Packet transfer. */ 142 143 #define OVS_PACKET_FAMILY "ovs_packet" 144 #define OVS_PACKET_VERSION 0x1 145 146 enum ovs_packet_cmd { 147 OVS_PACKET_CMD_UNSPEC, 148 149 /* Kernel-to-user notifications. */ 150 OVS_PACKET_CMD_MISS, /* Flow table miss. */ 151 OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */ 152 153 /* Userspace commands. */ 154 OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */ 155 }; 156 157 /** 158 * enum ovs_packet_attr - attributes for %OVS_PACKET_* commands. 159 * @OVS_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire 160 * packet as received, from the start of the Ethernet header onward. For 161 * %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by 162 * actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is 163 * the flow key extracted from the packet as originally received. 164 * @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key 165 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows 166 * userspace to adapt its flow setup strategy by comparing its notion of the 167 * flow key against the kernel's. 168 * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used 169 * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes. 170 * Also used in upcall when %OVS_ACTION_ATTR_USERSPACE has optional 171 * %OVS_USERSPACE_ATTR_ACTIONS attribute. 172 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION 173 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an 174 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content 175 * specified there. 176 * @OVS_PACKET_ATTR_EGRESS_TUN_KEY: Present for an %OVS_PACKET_CMD_ACTION 177 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an 178 * %OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute, which is sent only if the 179 * output port is actually a tunnel port. Contains the output tunnel key 180 * extracted from the packet as nested %OVS_TUNNEL_KEY_ATTR_* attributes. 181 * @OVS_PACKET_ATTR_MRU: Present for an %OVS_PACKET_CMD_ACTION and 182 * @OVS_PACKET_ATTR_LEN: Packet size before truncation. 183 * %OVS_PACKET_ATTR_USERSPACE action specify the Maximum received fragment 184 * size. 185 * @OVS_PACKET_ATTR_HASH: Packet hash info (e.g. hash, sw_hash and l4_hash in skb). 186 * 187 * These attributes follow the &struct ovs_header within the Generic Netlink 188 * payload for %OVS_PACKET_* commands. 189 */ 190 enum ovs_packet_attr { 191 OVS_PACKET_ATTR_UNSPEC, 192 OVS_PACKET_ATTR_PACKET, /* Packet data. */ 193 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */ 194 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 195 OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */ 196 OVS_PACKET_ATTR_EGRESS_TUN_KEY, /* Nested OVS_TUNNEL_KEY_ATTR_* 197 attributes. */ 198 OVS_PACKET_ATTR_UNUSED1, 199 OVS_PACKET_ATTR_UNUSED2, 200 OVS_PACKET_ATTR_PROBE, /* Packet operation is a feature probe, 201 error logging should be suppressed. */ 202 OVS_PACKET_ATTR_MRU, /* Maximum received IP fragment size. */ 203 OVS_PACKET_ATTR_LEN, /* Packet size before truncation. */ 204 OVS_PACKET_ATTR_HASH, /* Packet hash. */ 205 __OVS_PACKET_ATTR_MAX 206 }; 207 208 #define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1) 209 210 /* Virtual ports. */ 211 212 #define OVS_VPORT_FAMILY "ovs_vport" 213 #define OVS_VPORT_MCGROUP "ovs_vport" 214 #define OVS_VPORT_VERSION 0x1 215 216 enum ovs_vport_cmd { 217 OVS_VPORT_CMD_UNSPEC, 218 OVS_VPORT_CMD_NEW, 219 OVS_VPORT_CMD_DEL, 220 OVS_VPORT_CMD_GET, 221 OVS_VPORT_CMD_SET 222 }; 223 224 enum ovs_vport_type { 225 OVS_VPORT_TYPE_UNSPEC, 226 OVS_VPORT_TYPE_NETDEV, /* network device */ 227 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */ 228 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */ 229 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */ 230 OVS_VPORT_TYPE_GENEVE, /* Geneve tunnel. */ 231 __OVS_VPORT_TYPE_MAX 232 }; 233 234 #define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1) 235 236 /** 237 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands. 238 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath. 239 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type 240 * of vport. 241 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device 242 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes 243 * plus a null terminator. 244 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information. 245 * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace 246 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets 247 * received on this port. If this is a single-element array of value 0, 248 * upcalls should not be sent. 249 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for 250 * packets sent or received through the vport. 251 * 252 * These attributes follow the &struct ovs_header within the Generic Netlink 253 * payload for %OVS_VPORT_* commands. 254 * 255 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and 256 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is 257 * optional; if not specified a free port number is automatically selected. 258 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type 259 * of vport. 260 * 261 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to 262 * look up the vport to operate on; otherwise dp_idx from the &struct 263 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport. 264 */ 265 enum ovs_vport_attr { 266 OVS_VPORT_ATTR_UNSPEC, 267 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */ 268 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */ 269 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */ 270 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */ 271 OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */ 272 /* receiving upcalls */ 273 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */ 274 OVS_VPORT_ATTR_PAD, 275 OVS_VPORT_ATTR_IFINDEX, 276 OVS_VPORT_ATTR_NETNSID, 277 __OVS_VPORT_ATTR_MAX 278 }; 279 280 #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1) 281 282 enum { 283 OVS_VXLAN_EXT_UNSPEC, 284 OVS_VXLAN_EXT_GBP, /* Flag or __u32 */ 285 __OVS_VXLAN_EXT_MAX, 286 }; 287 288 #define OVS_VXLAN_EXT_MAX (__OVS_VXLAN_EXT_MAX - 1) 289 290 291 /* OVS_VPORT_ATTR_OPTIONS attributes for tunnels. 292 */ 293 enum { 294 OVS_TUNNEL_ATTR_UNSPEC, 295 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */ 296 OVS_TUNNEL_ATTR_EXTENSION, 297 __OVS_TUNNEL_ATTR_MAX 298 }; 299 300 #define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1) 301 302 /* Flows. */ 303 304 #define OVS_FLOW_FAMILY "ovs_flow" 305 #define OVS_FLOW_MCGROUP "ovs_flow" 306 #define OVS_FLOW_VERSION 0x1 307 308 enum ovs_flow_cmd { 309 OVS_FLOW_CMD_UNSPEC, 310 OVS_FLOW_CMD_NEW, 311 OVS_FLOW_CMD_DEL, 312 OVS_FLOW_CMD_GET, 313 OVS_FLOW_CMD_SET 314 }; 315 316 struct ovs_flow_stats { 317 __u64 n_packets; /* Number of matched packets. */ 318 __u64 n_bytes; /* Number of matched bytes. */ 319 }; 320 321 enum ovs_key_attr { 322 OVS_KEY_ATTR_UNSPEC, 323 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */ 324 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */ 325 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */ 326 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */ 327 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */ 328 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */ 329 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */ 330 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */ 331 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */ 332 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */ 333 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */ 334 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */ 335 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */ 336 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */ 337 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */ 338 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */ 339 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */ 340 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */ 341 OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash 342 is not computed by the datapath. */ 343 OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */ 344 OVS_KEY_ATTR_MPLS, /* array of struct ovs_key_mpls. 345 * The implementation may restrict 346 * the accepted length of the array. */ 347 OVS_KEY_ATTR_CT_STATE, /* u32 bitmask of OVS_CS_F_* */ 348 OVS_KEY_ATTR_CT_ZONE, /* u16 connection tracking zone. */ 349 OVS_KEY_ATTR_CT_MARK, /* u32 connection tracking mark */ 350 OVS_KEY_ATTR_CT_LABELS, /* 16-octet connection tracking label */ 351 OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4, /* struct ovs_key_ct_tuple_ipv4 */ 352 OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6, /* struct ovs_key_ct_tuple_ipv6 */ 353 OVS_KEY_ATTR_NSH, /* Nested set of ovs_nsh_key_* */ 354 OVS_KEY_ATTR_IPV6_EXTHDRS, /* struct ovs_key_ipv6_exthdr */ 355 356 #ifdef __KERNEL__ 357 OVS_KEY_ATTR_TUNNEL_INFO, /* struct ip_tunnel_info */ 358 #endif 359 __OVS_KEY_ATTR_MAX 360 }; 361 362 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1) 363 364 enum ovs_tunnel_key_attr { 365 /* OVS_TUNNEL_KEY_ATTR_NONE, standard nl API requires this attribute! */ 366 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */ 367 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */ 368 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */ 369 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */ 370 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */ 371 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */ 372 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */ 373 OVS_TUNNEL_KEY_ATTR_OAM, /* No argument. OAM frame. */ 374 OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, /* Array of Geneve options. */ 375 OVS_TUNNEL_KEY_ATTR_TP_SRC, /* be16 src Transport Port. */ 376 OVS_TUNNEL_KEY_ATTR_TP_DST, /* be16 dst Transport Port. */ 377 OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS, /* Nested OVS_VXLAN_EXT_* */ 378 OVS_TUNNEL_KEY_ATTR_IPV6_SRC, /* struct in6_addr src IPv6 address. */ 379 OVS_TUNNEL_KEY_ATTR_IPV6_DST, /* struct in6_addr dst IPv6 address. */ 380 OVS_TUNNEL_KEY_ATTR_PAD, 381 OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS, /* struct erspan_metadata */ 382 OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE, /* No argument. IPV4_INFO_BRIDGE mode.*/ 383 __OVS_TUNNEL_KEY_ATTR_MAX 384 }; 385 386 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1) 387 388 /** 389 * enum ovs_frag_type - IPv4 and IPv6 fragment type 390 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment. 391 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0. 392 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset. 393 * 394 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct 395 * ovs_key_ipv6. 396 */ 397 enum ovs_frag_type { 398 OVS_FRAG_TYPE_NONE, 399 OVS_FRAG_TYPE_FIRST, 400 OVS_FRAG_TYPE_LATER, 401 __OVS_FRAG_TYPE_MAX 402 }; 403 404 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1) 405 406 struct ovs_key_ethernet { 407 __u8 eth_src[ETH_ALEN]; 408 __u8 eth_dst[ETH_ALEN]; 409 }; 410 411 struct ovs_key_mpls { 412 __be32 mpls_lse; 413 }; 414 415 struct ovs_key_ipv4 { 416 __be32 ipv4_src; 417 __be32 ipv4_dst; 418 __u8 ipv4_proto; 419 __u8 ipv4_tos; 420 __u8 ipv4_ttl; 421 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */ 422 }; 423 424 struct ovs_key_ipv6 { 425 __be32 ipv6_src[4]; 426 __be32 ipv6_dst[4]; 427 __be32 ipv6_label; /* 20-bits in least-significant bits. */ 428 __u8 ipv6_proto; 429 __u8 ipv6_tclass; 430 __u8 ipv6_hlimit; 431 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */ 432 }; 433 434 /* separate structure to support backward compatibility with older user space */ 435 struct ovs_key_ipv6_exthdrs { 436 __u16 hdrs; 437 }; 438 439 struct ovs_key_tcp { 440 __be16 tcp_src; 441 __be16 tcp_dst; 442 }; 443 444 struct ovs_key_udp { 445 __be16 udp_src; 446 __be16 udp_dst; 447 }; 448 449 struct ovs_key_sctp { 450 __be16 sctp_src; 451 __be16 sctp_dst; 452 }; 453 454 struct ovs_key_icmp { 455 __u8 icmp_type; 456 __u8 icmp_code; 457 }; 458 459 struct ovs_key_icmpv6 { 460 __u8 icmpv6_type; 461 __u8 icmpv6_code; 462 }; 463 464 struct ovs_key_arp { 465 __be32 arp_sip; 466 __be32 arp_tip; 467 __be16 arp_op; 468 __u8 arp_sha[ETH_ALEN]; 469 __u8 arp_tha[ETH_ALEN]; 470 }; 471 472 struct ovs_key_nd { 473 __be32 nd_target[4]; 474 __u8 nd_sll[ETH_ALEN]; 475 __u8 nd_tll[ETH_ALEN]; 476 }; 477 478 #define OVS_CT_LABELS_LEN_32 4 479 #define OVS_CT_LABELS_LEN (OVS_CT_LABELS_LEN_32 * sizeof(__u32)) 480 struct ovs_key_ct_labels { 481 union { 482 __u8 ct_labels[OVS_CT_LABELS_LEN]; 483 __u32 ct_labels_32[OVS_CT_LABELS_LEN_32]; 484 }; 485 }; 486 487 /* OVS_KEY_ATTR_CT_STATE flags */ 488 #define OVS_CS_F_NEW 0x01 /* Beginning of a new connection. */ 489 #define OVS_CS_F_ESTABLISHED 0x02 /* Part of an existing connection. */ 490 #define OVS_CS_F_RELATED 0x04 /* Related to an established 491 * connection. */ 492 #define OVS_CS_F_REPLY_DIR 0x08 /* Flow is in the reply direction. */ 493 #define OVS_CS_F_INVALID 0x10 /* Could not track connection. */ 494 #define OVS_CS_F_TRACKED 0x20 /* Conntrack has occurred. */ 495 #define OVS_CS_F_SRC_NAT 0x40 /* Packet's source address/port was 496 * mangled by NAT. 497 */ 498 #define OVS_CS_F_DST_NAT 0x80 /* Packet's destination address/port 499 * was mangled by NAT. 500 */ 501 502 #define OVS_CS_F_NAT_MASK (OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT) 503 504 struct ovs_key_ct_tuple_ipv4 { 505 __be32 ipv4_src; 506 __be32 ipv4_dst; 507 __be16 src_port; 508 __be16 dst_port; 509 __u8 ipv4_proto; 510 }; 511 512 struct ovs_key_ct_tuple_ipv6 { 513 __be32 ipv6_src[4]; 514 __be32 ipv6_dst[4]; 515 __be16 src_port; 516 __be16 dst_port; 517 __u8 ipv6_proto; 518 }; 519 520 enum ovs_nsh_key_attr { 521 OVS_NSH_KEY_ATTR_UNSPEC, 522 OVS_NSH_KEY_ATTR_BASE, /* struct ovs_nsh_key_base. */ 523 OVS_NSH_KEY_ATTR_MD1, /* struct ovs_nsh_key_md1. */ 524 OVS_NSH_KEY_ATTR_MD2, /* variable-length octets for MD type 2. */ 525 __OVS_NSH_KEY_ATTR_MAX 526 }; 527 528 #define OVS_NSH_KEY_ATTR_MAX (__OVS_NSH_KEY_ATTR_MAX - 1) 529 530 struct ovs_nsh_key_base { 531 __u8 flags; 532 __u8 ttl; 533 __u8 mdtype; 534 __u8 np; 535 __be32 path_hdr; 536 }; 537 538 #define NSH_MD1_CONTEXT_SIZE 4 539 540 struct ovs_nsh_key_md1 { 541 __be32 context[NSH_MD1_CONTEXT_SIZE]; 542 }; 543 544 /** 545 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands. 546 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow 547 * key. Always present in notifications. Required for all requests (except 548 * dumps). 549 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying 550 * the actions to take for packets that match the key. Always present in 551 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for 552 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without 553 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions, 554 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given. 555 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this 556 * flow. Present in notifications if the stats would be nonzero. Ignored in 557 * requests. 558 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the 559 * TCP flags seen on packets in this flow. Only present in notifications for 560 * TCP flows, and only if it would be nonzero. Ignored in requests. 561 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on 562 * the system monotonic clock, at which a packet was last processed for this 563 * flow. Only present in notifications if a packet has been processed for this 564 * flow. Ignored in requests. 565 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the 566 * last-used time, accumulated TCP flags, and statistics for this flow. 567 * Otherwise ignored in requests. Never present in notifications. 568 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the 569 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact 570 * match with corresponding flow key bit, while mask bit value '0' specifies 571 * a wildcarded match. Omitting attribute is treated as wildcarding all 572 * corresponding fields. Optional for all requests. If not present, 573 * all flow key bits are exact match bits. 574 * @OVS_FLOW_ATTR_UFID: A value between 1-16 octets specifying a unique 575 * identifier for the flow. Causes the flow to be indexed by this value rather 576 * than the value of the %OVS_FLOW_ATTR_KEY attribute. Optional for all 577 * requests. Present in notifications if the flow was created with this 578 * attribute. 579 * @OVS_FLOW_ATTR_UFID_FLAGS: A 32-bit value of OR'd %OVS_UFID_F_* 580 * flags that provide alternative semantics for flow installation and 581 * retrieval. Optional for all requests. 582 * 583 * These attributes follow the &struct ovs_header within the Generic Netlink 584 * payload for %OVS_FLOW_* commands. 585 */ 586 enum ovs_flow_attr { 587 OVS_FLOW_ATTR_UNSPEC, 588 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */ 589 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 590 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */ 591 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */ 592 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */ 593 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */ 594 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */ 595 OVS_FLOW_ATTR_PROBE, /* Flow operation is a feature probe, error 596 * logging should be suppressed. */ 597 OVS_FLOW_ATTR_UFID, /* Variable length unique flow identifier. */ 598 OVS_FLOW_ATTR_UFID_FLAGS,/* u32 of OVS_UFID_F_*. */ 599 OVS_FLOW_ATTR_PAD, 600 __OVS_FLOW_ATTR_MAX 601 }; 602 603 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1) 604 605 /** 606 * Omit attributes for notifications. 607 * 608 * If a datapath request contains an %OVS_UFID_F_OMIT_* flag, then the datapath 609 * may omit the corresponding %OVS_FLOW_ATTR_* from the response. 610 */ 611 #define OVS_UFID_F_OMIT_KEY (1 << 0) 612 #define OVS_UFID_F_OMIT_MASK (1 << 1) 613 #define OVS_UFID_F_OMIT_ACTIONS (1 << 2) 614 615 /** 616 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action. 617 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with 618 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of 619 * %UINT32_MAX samples all packets and intermediate values sample intermediate 620 * fractions of packets. 621 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event. 622 * Actions are passed as nested attributes. 623 * 624 * Executes the specified actions with the given probability on a per-packet 625 * basis. 626 */ 627 enum ovs_sample_attr { 628 OVS_SAMPLE_ATTR_UNSPEC, 629 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */ 630 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 631 __OVS_SAMPLE_ATTR_MAX, 632 633 #ifdef __KERNEL__ 634 OVS_SAMPLE_ATTR_ARG /* struct sample_arg */ 635 #endif 636 }; 637 638 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1) 639 640 #ifdef __KERNEL__ 641 struct sample_arg { 642 bool exec; /* When true, actions in sample will not 643 * change flow keys. False otherwise. 644 */ 645 u32 probability; /* Same value as 646 * 'OVS_SAMPLE_ATTR_PROBABILITY'. 647 */ 648 }; 649 #endif 650 651 /** 652 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action. 653 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION 654 * message should be sent. Required. 655 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is 656 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA. 657 * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get 658 * tunnel info. 659 * @OVS_USERSPACE_ATTR_ACTIONS: If present, send actions with upcall. 660 */ 661 enum ovs_userspace_attr { 662 OVS_USERSPACE_ATTR_UNSPEC, 663 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */ 664 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */ 665 OVS_USERSPACE_ATTR_EGRESS_TUN_PORT, /* Optional, u32 output port 666 * to get tunnel info. */ 667 OVS_USERSPACE_ATTR_ACTIONS, /* Optional flag to get actions. */ 668 __OVS_USERSPACE_ATTR_MAX 669 }; 670 671 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1) 672 673 struct ovs_action_trunc { 674 __u32 max_len; /* Max packet size in bytes. */ 675 }; 676 677 /** 678 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument. 679 * @mpls_lse: MPLS label stack entry to push. 680 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame. 681 * 682 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and 683 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected. 684 */ 685 struct ovs_action_push_mpls { 686 __be32 mpls_lse; 687 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */ 688 }; 689 690 /** 691 * struct ovs_action_add_mpls - %OVS_ACTION_ATTR_ADD_MPLS action 692 * argument. 693 * @mpls_lse: MPLS label stack entry to push. 694 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame. 695 * @tun_flags: MPLS tunnel attributes. 696 * 697 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and 698 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected. 699 */ 700 struct ovs_action_add_mpls { 701 __be32 mpls_lse; 702 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */ 703 __u16 tun_flags; 704 }; 705 706 #define OVS_MPLS_L3_TUNNEL_FLAG_MASK (1 << 0) /* Flag to specify the place of 707 * insertion of MPLS header. 708 * When false, the MPLS header 709 * will be inserted at the start 710 * of the packet. 711 * When true, the MPLS header 712 * will be inserted at the start 713 * of the l3 header. 714 */ 715 716 /** 717 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument. 718 * @vlan_tpid: Tag protocol identifier (TPID) to push. 719 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set 720 * (but it will not be set in the 802.1Q header that is pushed). 721 * 722 * The @vlan_tpid value is typically %ETH_P_8021Q or %ETH_P_8021AD. 723 * The only acceptable TPID values are those that the kernel module also parses 724 * as 802.1Q or 802.1AD headers, to prevent %OVS_ACTION_ATTR_PUSH_VLAN followed 725 * by %OVS_ACTION_ATTR_POP_VLAN from having surprising results. 726 */ 727 struct ovs_action_push_vlan { 728 __be16 vlan_tpid; /* 802.1Q or 802.1ad TPID. */ 729 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */ 730 }; 731 732 /* Data path hash algorithm for computing Datapath hash. 733 * 734 * The algorithm type only specifies the fields in a flow 735 * will be used as part of the hash. Each datapath is free 736 * to use its own hash algorithm. The hash value will be 737 * opaque to the user space daemon. 738 */ 739 enum ovs_hash_alg { 740 OVS_HASH_ALG_L4, 741 }; 742 743 /* 744 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument. 745 * @hash_alg: Algorithm used to compute hash prior to recirculation. 746 * @hash_basis: basis used for computing hash. 747 */ 748 struct ovs_action_hash { 749 __u32 hash_alg; /* One of ovs_hash_alg. */ 750 __u32 hash_basis; 751 }; 752 753 /** 754 * enum ovs_ct_attr - Attributes for %OVS_ACTION_ATTR_CT action. 755 * @OVS_CT_ATTR_COMMIT: If present, commits the connection to the conntrack 756 * table. This allows future packets for the same connection to be identified 757 * as 'established' or 'related'. The flow key for the current packet will 758 * retain the pre-commit connection state. 759 * @OVS_CT_ATTR_ZONE: u16 connection tracking zone. 760 * @OVS_CT_ATTR_MARK: u32 value followed by u32 mask. For each bit set in the 761 * mask, the corresponding bit in the value is copied to the connection 762 * tracking mark field in the connection. 763 * @OVS_CT_ATTR_LABELS: %OVS_CT_LABELS_LEN value followed by %OVS_CT_LABELS_LEN 764 * mask. For each bit set in the mask, the corresponding bit in the value is 765 * copied to the connection tracking label field in the connection. 766 * @OVS_CT_ATTR_HELPER: variable length string defining conntrack ALG. 767 * @OVS_CT_ATTR_NAT: Nested OVS_NAT_ATTR_* for performing L3 network address 768 * translation (NAT) on the packet. 769 * @OVS_CT_ATTR_FORCE_COMMIT: Like %OVS_CT_ATTR_COMMIT, but instead of doing 770 * nothing if the connection is already committed will check that the current 771 * packet is in conntrack entry's original direction. If directionality does 772 * not match, will delete the existing conntrack entry and commit a new one. 773 * @OVS_CT_ATTR_EVENTMASK: Mask of bits indicating which conntrack event types 774 * (enum ip_conntrack_events IPCT_*) should be reported. For any bit set to 775 * zero, the corresponding event type is not generated. Default behavior 776 * depends on system configuration, but typically all event types are 777 * generated, hence listening on NFNLGRP_CONNTRACK_UPDATE events may get a lot 778 * of events. Explicitly passing this attribute allows limiting the updates 779 * received to the events of interest. The bit 1 << IPCT_NEW, 1 << 780 * IPCT_RELATED, and 1 << IPCT_DESTROY must be set to ones for those events to 781 * be received on NFNLGRP_CONNTRACK_NEW and NFNLGRP_CONNTRACK_DESTROY groups, 782 * respectively. Remaining bits control the changes for which an event is 783 * delivered on the NFNLGRP_CONNTRACK_UPDATE group. 784 * @OVS_CT_ATTR_TIMEOUT: Variable length string defining conntrack timeout. 785 */ 786 enum ovs_ct_attr { 787 OVS_CT_ATTR_UNSPEC, 788 OVS_CT_ATTR_COMMIT, /* No argument, commits connection. */ 789 OVS_CT_ATTR_ZONE, /* u16 zone id. */ 790 OVS_CT_ATTR_MARK, /* mark to associate with this connection. */ 791 OVS_CT_ATTR_LABELS, /* labels to associate with this connection. */ 792 OVS_CT_ATTR_HELPER, /* netlink helper to assist detection of 793 related connections. */ 794 OVS_CT_ATTR_NAT, /* Nested OVS_NAT_ATTR_* */ 795 OVS_CT_ATTR_FORCE_COMMIT, /* No argument */ 796 OVS_CT_ATTR_EVENTMASK, /* u32 mask of IPCT_* events. */ 797 OVS_CT_ATTR_TIMEOUT, /* Associate timeout with this connection for 798 * fine-grain timeout tuning. */ 799 __OVS_CT_ATTR_MAX 800 }; 801 802 #define OVS_CT_ATTR_MAX (__OVS_CT_ATTR_MAX - 1) 803 804 /** 805 * enum ovs_nat_attr - Attributes for %OVS_CT_ATTR_NAT. 806 * 807 * @OVS_NAT_ATTR_SRC: Flag for Source NAT (mangle source address/port). 808 * @OVS_NAT_ATTR_DST: Flag for Destination NAT (mangle destination 809 * address/port). Only one of (@OVS_NAT_ATTR_SRC, @OVS_NAT_ATTR_DST) may be 810 * specified. Effective only for packets for ct_state NEW connections. 811 * Packets of committed connections are mangled by the NAT action according to 812 * the committed NAT type regardless of the flags specified. As a corollary, a 813 * NAT action without a NAT type flag will only mangle packets of committed 814 * connections. The following NAT attributes only apply for NEW 815 * (non-committed) connections, and they may be included only when the CT 816 * action has the @OVS_CT_ATTR_COMMIT flag and either @OVS_NAT_ATTR_SRC or 817 * @OVS_NAT_ATTR_DST is also included. 818 * @OVS_NAT_ATTR_IP_MIN: struct in_addr or struct in6_addr 819 * @OVS_NAT_ATTR_IP_MAX: struct in_addr or struct in6_addr 820 * @OVS_NAT_ATTR_PROTO_MIN: u16 L4 protocol specific lower boundary (port) 821 * @OVS_NAT_ATTR_PROTO_MAX: u16 L4 protocol specific upper boundary (port) 822 * @OVS_NAT_ATTR_PERSISTENT: Flag for persistent IP mapping across reboots 823 * @OVS_NAT_ATTR_PROTO_HASH: Flag for pseudo random L4 port mapping (MD5) 824 * @OVS_NAT_ATTR_PROTO_RANDOM: Flag for fully randomized L4 port mapping 825 */ 826 enum ovs_nat_attr { 827 OVS_NAT_ATTR_UNSPEC, 828 OVS_NAT_ATTR_SRC, 829 OVS_NAT_ATTR_DST, 830 OVS_NAT_ATTR_IP_MIN, 831 OVS_NAT_ATTR_IP_MAX, 832 OVS_NAT_ATTR_PROTO_MIN, 833 OVS_NAT_ATTR_PROTO_MAX, 834 OVS_NAT_ATTR_PERSISTENT, 835 OVS_NAT_ATTR_PROTO_HASH, 836 OVS_NAT_ATTR_PROTO_RANDOM, 837 __OVS_NAT_ATTR_MAX, 838 }; 839 840 #define OVS_NAT_ATTR_MAX (__OVS_NAT_ATTR_MAX - 1) 841 842 /* 843 * struct ovs_action_push_eth - %OVS_ACTION_ATTR_PUSH_ETH action argument. 844 * @addresses: Source and destination MAC addresses. 845 * @eth_type: Ethernet type 846 */ 847 struct ovs_action_push_eth { 848 struct ovs_key_ethernet addresses; 849 }; 850 851 /* 852 * enum ovs_check_pkt_len_attr - Attributes for %OVS_ACTION_ATTR_CHECK_PKT_LEN. 853 * 854 * @OVS_CHECK_PKT_LEN_ATTR_PKT_LEN: u16 Packet length to check for. 855 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER: Nested OVS_ACTION_ATTR_* 856 * actions to apply if the packer length is greater than the specified 857 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN. 858 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL - Nested OVS_ACTION_ATTR_* 859 * actions to apply if the packer length is lesser or equal to the specified 860 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN. 861 */ 862 enum ovs_check_pkt_len_attr { 863 OVS_CHECK_PKT_LEN_ATTR_UNSPEC, 864 OVS_CHECK_PKT_LEN_ATTR_PKT_LEN, 865 OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER, 866 OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL, 867 __OVS_CHECK_PKT_LEN_ATTR_MAX, 868 869 #ifdef __KERNEL__ 870 OVS_CHECK_PKT_LEN_ATTR_ARG /* struct check_pkt_len_arg */ 871 #endif 872 }; 873 874 #define OVS_CHECK_PKT_LEN_ATTR_MAX (__OVS_CHECK_PKT_LEN_ATTR_MAX - 1) 875 876 #ifdef __KERNEL__ 877 struct check_pkt_len_arg { 878 u16 pkt_len; /* Same value as OVS_CHECK_PKT_LEN_ATTR_PKT_LEN'. */ 879 bool exec_for_greater; /* When true, actions in IF_GREATER will 880 * not change flow keys. False otherwise. 881 */ 882 bool exec_for_lesser_equal; /* When true, actions in IF_LESS_EQUAL 883 * will not change flow keys. False 884 * otherwise. 885 */ 886 }; 887 #endif 888 889 /** 890 * enum ovs_action_attr - Action types. 891 * 892 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port. 893 * @OVS_ACTION_ATTR_TRUNC: Output packet to port with truncated packet size. 894 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested 895 * %OVS_USERSPACE_ATTR_* attributes. 896 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The 897 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its 898 * value. 899 * @OVS_ACTION_ATTR_SET_MASKED: Replaces the contents of an existing header. A 900 * nested %OVS_KEY_ATTR_* attribute specifies a header to modify, its value, 901 * and a mask. For every bit set in the mask, the corresponding bit value 902 * is copied from the value to the packet header field, rest of the bits are 903 * left unchanged. The non-masked value bits must be passed in as zeroes. 904 * Masking is not supported for the %OVS_KEY_ATTR_TUNNEL attribute. 905 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q or 802.1ad header 906 * onto the packet. 907 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q or 802.1ad header 908 * from the packet. 909 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in 910 * the nested %OVS_SAMPLE_ATTR_* attributes. 911 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the 912 * top of the packets MPLS label stack. Set the ethertype of the 913 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to 914 * indicate the new packet contents. 915 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the 916 * packet's MPLS label stack. Set the encapsulating frame's ethertype to 917 * indicate the new packet contents. This could potentially still be 918 * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there 919 * is no MPLS label stack, as determined by ethertype, no action is taken. 920 * @OVS_ACTION_ATTR_CT: Track the connection. Populate the conntrack-related 921 * entries in the flow key. 922 * @OVS_ACTION_ATTR_PUSH_ETH: Push a new outermost Ethernet header onto the 923 * packet. 924 * @OVS_ACTION_ATTR_POP_ETH: Pop the outermost Ethernet header off the 925 * packet. 926 * @OVS_ACTION_ATTR_CT_CLEAR: Clear conntrack state from the packet. 927 * @OVS_ACTION_ATTR_PUSH_NSH: push NSH header to the packet. 928 * @OVS_ACTION_ATTR_POP_NSH: pop the outermost NSH header off the packet. 929 * @OVS_ACTION_ATTR_METER: Run packet through a meter, which may drop the 930 * packet, or modify the packet (e.g., change the DSCP field). 931 * @OVS_ACTION_ATTR_CLONE: make a copy of the packet and execute a list of 932 * actions without affecting the original packet and key. 933 * @OVS_ACTION_ATTR_CHECK_PKT_LEN: Check the packet length and execute a set 934 * of actions if greater than the specified packet length, else execute 935 * another set of actions. 936 * @OVS_ACTION_ATTR_ADD_MPLS: Push a new MPLS label stack entry at the 937 * start of the packet or at the start of the l3 header depending on the value 938 * of l3 tunnel flag in the tun_flags field of OVS_ACTION_ATTR_ADD_MPLS 939 * argument. 940 * 941 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all 942 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment 943 * type may not be changed. 944 * 945 * @OVS_ACTION_ATTR_SET_TO_MASKED: Kernel internal masked set action translated 946 * from the @OVS_ACTION_ATTR_SET. 947 */ 948 949 enum ovs_action_attr { 950 OVS_ACTION_ATTR_UNSPEC, 951 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */ 952 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */ 953 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */ 954 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */ 955 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */ 956 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */ 957 OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */ 958 OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */ 959 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */ 960 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */ 961 OVS_ACTION_ATTR_SET_MASKED, /* One nested OVS_KEY_ATTR_* including 962 * data immediately followed by a mask. 963 * The data must be zero for the unmasked 964 * bits. */ 965 OVS_ACTION_ATTR_CT, /* Nested OVS_CT_ATTR_* . */ 966 OVS_ACTION_ATTR_TRUNC, /* u32 struct ovs_action_trunc. */ 967 OVS_ACTION_ATTR_PUSH_ETH, /* struct ovs_action_push_eth. */ 968 OVS_ACTION_ATTR_POP_ETH, /* No argument. */ 969 OVS_ACTION_ATTR_CT_CLEAR, /* No argument. */ 970 OVS_ACTION_ATTR_PUSH_NSH, /* Nested OVS_NSH_KEY_ATTR_*. */ 971 OVS_ACTION_ATTR_POP_NSH, /* No argument. */ 972 OVS_ACTION_ATTR_METER, /* u32 meter ID. */ 973 OVS_ACTION_ATTR_CLONE, /* Nested OVS_CLONE_ATTR_*. */ 974 OVS_ACTION_ATTR_CHECK_PKT_LEN, /* Nested OVS_CHECK_PKT_LEN_ATTR_*. */ 975 OVS_ACTION_ATTR_ADD_MPLS, /* struct ovs_action_add_mpls. */ 976 OVS_ACTION_ATTR_DEC_TTL, /* Nested OVS_DEC_TTL_ATTR_*. */ 977 978 __OVS_ACTION_ATTR_MAX, /* Nothing past this will be accepted 979 * from userspace. */ 980 981 #ifdef __KERNEL__ 982 OVS_ACTION_ATTR_SET_TO_MASKED, /* Kernel module internal masked 983 * set action converted from 984 * OVS_ACTION_ATTR_SET. */ 985 #endif 986 }; 987 988 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1) 989 990 /* Meters. */ 991 #define OVS_METER_FAMILY "ovs_meter" 992 #define OVS_METER_MCGROUP "ovs_meter" 993 #define OVS_METER_VERSION 0x1 994 995 enum ovs_meter_cmd { 996 OVS_METER_CMD_UNSPEC, 997 OVS_METER_CMD_FEATURES, /* Get features supported by the datapath. */ 998 OVS_METER_CMD_SET, /* Add or modify a meter. */ 999 OVS_METER_CMD_DEL, /* Delete a meter. */ 1000 OVS_METER_CMD_GET /* Get meter stats. */ 1001 }; 1002 1003 enum ovs_meter_attr { 1004 OVS_METER_ATTR_UNSPEC, 1005 OVS_METER_ATTR_ID, /* u32 meter ID within datapath. */ 1006 OVS_METER_ATTR_KBPS, /* No argument. If set, units in kilobits 1007 * per second. Otherwise, units in 1008 * packets per second. 1009 */ 1010 OVS_METER_ATTR_STATS, /* struct ovs_flow_stats for the meter. */ 1011 OVS_METER_ATTR_BANDS, /* Nested attributes for meter bands. */ 1012 OVS_METER_ATTR_USED, /* u64 msecs last used in monotonic time. */ 1013 OVS_METER_ATTR_CLEAR, /* Flag to clear stats, used. */ 1014 OVS_METER_ATTR_MAX_METERS, /* u32 number of meters supported. */ 1015 OVS_METER_ATTR_MAX_BANDS, /* u32 max number of bands per meter. */ 1016 OVS_METER_ATTR_PAD, 1017 __OVS_METER_ATTR_MAX 1018 }; 1019 1020 #define OVS_METER_ATTR_MAX (__OVS_METER_ATTR_MAX - 1) 1021 1022 enum ovs_band_attr { 1023 OVS_BAND_ATTR_UNSPEC, 1024 OVS_BAND_ATTR_TYPE, /* u32 OVS_METER_BAND_TYPE_* constant. */ 1025 OVS_BAND_ATTR_RATE, /* u32 band rate in meter units (see above). */ 1026 OVS_BAND_ATTR_BURST, /* u32 burst size in meter units. */ 1027 OVS_BAND_ATTR_STATS, /* struct ovs_flow_stats for the band. */ 1028 __OVS_BAND_ATTR_MAX 1029 }; 1030 1031 #define OVS_BAND_ATTR_MAX (__OVS_BAND_ATTR_MAX - 1) 1032 1033 enum ovs_meter_band_type { 1034 OVS_METER_BAND_TYPE_UNSPEC, 1035 OVS_METER_BAND_TYPE_DROP, /* Drop exceeding packets. */ 1036 __OVS_METER_BAND_TYPE_MAX 1037 }; 1038 1039 #define OVS_METER_BAND_TYPE_MAX (__OVS_METER_BAND_TYPE_MAX - 1) 1040 1041 /* Conntrack limit */ 1042 #define OVS_CT_LIMIT_FAMILY "ovs_ct_limit" 1043 #define OVS_CT_LIMIT_MCGROUP "ovs_ct_limit" 1044 #define OVS_CT_LIMIT_VERSION 0x1 1045 1046 enum ovs_ct_limit_cmd { 1047 OVS_CT_LIMIT_CMD_UNSPEC, 1048 OVS_CT_LIMIT_CMD_SET, /* Add or modify ct limit. */ 1049 OVS_CT_LIMIT_CMD_DEL, /* Delete ct limit. */ 1050 OVS_CT_LIMIT_CMD_GET /* Get ct limit. */ 1051 }; 1052 1053 enum ovs_ct_limit_attr { 1054 OVS_CT_LIMIT_ATTR_UNSPEC, 1055 OVS_CT_LIMIT_ATTR_ZONE_LIMIT, /* Nested struct ovs_zone_limit. */ 1056 __OVS_CT_LIMIT_ATTR_MAX 1057 }; 1058 1059 #define OVS_CT_LIMIT_ATTR_MAX (__OVS_CT_LIMIT_ATTR_MAX - 1) 1060 1061 #define OVS_ZONE_LIMIT_DEFAULT_ZONE -1 1062 1063 struct ovs_zone_limit { 1064 int zone_id; 1065 __u32 limit; 1066 __u32 count; 1067 }; 1068 1069 enum ovs_dec_ttl_attr { 1070 OVS_DEC_TTL_ATTR_UNSPEC, 1071 OVS_DEC_TTL_ATTR_ACTION, /* Nested struct nlattr */ 1072 __OVS_DEC_TTL_ATTR_MAX 1073 }; 1074 1075 #define OVS_DEC_TTL_ATTR_MAX (__OVS_DEC_TTL_ATTR_MAX - 1) 1076 1077 #endif /* _LINUX_OPENVSWITCH_H */ 1078