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_* */ 354 355 #ifdef __KERNEL__ 356 OVS_KEY_ATTR_TUNNEL_INFO, /* struct ip_tunnel_info */ 357 #endif 358 __OVS_KEY_ATTR_MAX 359 }; 360 361 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1) 362 363 enum ovs_tunnel_key_attr { 364 /* OVS_TUNNEL_KEY_ATTR_NONE, standard nl API requires this attribute! */ 365 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */ 366 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */ 367 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */ 368 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */ 369 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */ 370 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */ 371 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */ 372 OVS_TUNNEL_KEY_ATTR_OAM, /* No argument. OAM frame. */ 373 OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, /* Array of Geneve options. */ 374 OVS_TUNNEL_KEY_ATTR_TP_SRC, /* be16 src Transport Port. */ 375 OVS_TUNNEL_KEY_ATTR_TP_DST, /* be16 dst Transport Port. */ 376 OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS, /* Nested OVS_VXLAN_EXT_* */ 377 OVS_TUNNEL_KEY_ATTR_IPV6_SRC, /* struct in6_addr src IPv6 address. */ 378 OVS_TUNNEL_KEY_ATTR_IPV6_DST, /* struct in6_addr dst IPv6 address. */ 379 OVS_TUNNEL_KEY_ATTR_PAD, 380 OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS, /* struct erspan_metadata */ 381 OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE, /* No argument. IPV4_INFO_BRIDGE mode.*/ 382 __OVS_TUNNEL_KEY_ATTR_MAX 383 }; 384 385 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1) 386 387 /** 388 * enum ovs_frag_type - IPv4 and IPv6 fragment type 389 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment. 390 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0. 391 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset. 392 * 393 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct 394 * ovs_key_ipv6. 395 */ 396 enum ovs_frag_type { 397 OVS_FRAG_TYPE_NONE, 398 OVS_FRAG_TYPE_FIRST, 399 OVS_FRAG_TYPE_LATER, 400 __OVS_FRAG_TYPE_MAX 401 }; 402 403 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1) 404 405 struct ovs_key_ethernet { 406 __u8 eth_src[ETH_ALEN]; 407 __u8 eth_dst[ETH_ALEN]; 408 }; 409 410 struct ovs_key_mpls { 411 __be32 mpls_lse; 412 }; 413 414 struct ovs_key_ipv4 { 415 __be32 ipv4_src; 416 __be32 ipv4_dst; 417 __u8 ipv4_proto; 418 __u8 ipv4_tos; 419 __u8 ipv4_ttl; 420 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */ 421 }; 422 423 struct ovs_key_ipv6 { 424 __be32 ipv6_src[4]; 425 __be32 ipv6_dst[4]; 426 __be32 ipv6_label; /* 20-bits in least-significant bits. */ 427 __u8 ipv6_proto; 428 __u8 ipv6_tclass; 429 __u8 ipv6_hlimit; 430 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */ 431 }; 432 433 struct ovs_key_tcp { 434 __be16 tcp_src; 435 __be16 tcp_dst; 436 }; 437 438 struct ovs_key_udp { 439 __be16 udp_src; 440 __be16 udp_dst; 441 }; 442 443 struct ovs_key_sctp { 444 __be16 sctp_src; 445 __be16 sctp_dst; 446 }; 447 448 struct ovs_key_icmp { 449 __u8 icmp_type; 450 __u8 icmp_code; 451 }; 452 453 struct ovs_key_icmpv6 { 454 __u8 icmpv6_type; 455 __u8 icmpv6_code; 456 }; 457 458 struct ovs_key_arp { 459 __be32 arp_sip; 460 __be32 arp_tip; 461 __be16 arp_op; 462 __u8 arp_sha[ETH_ALEN]; 463 __u8 arp_tha[ETH_ALEN]; 464 }; 465 466 struct ovs_key_nd { 467 __be32 nd_target[4]; 468 __u8 nd_sll[ETH_ALEN]; 469 __u8 nd_tll[ETH_ALEN]; 470 }; 471 472 #define OVS_CT_LABELS_LEN_32 4 473 #define OVS_CT_LABELS_LEN (OVS_CT_LABELS_LEN_32 * sizeof(__u32)) 474 struct ovs_key_ct_labels { 475 union { 476 __u8 ct_labels[OVS_CT_LABELS_LEN]; 477 __u32 ct_labels_32[OVS_CT_LABELS_LEN_32]; 478 }; 479 }; 480 481 /* OVS_KEY_ATTR_CT_STATE flags */ 482 #define OVS_CS_F_NEW 0x01 /* Beginning of a new connection. */ 483 #define OVS_CS_F_ESTABLISHED 0x02 /* Part of an existing connection. */ 484 #define OVS_CS_F_RELATED 0x04 /* Related to an established 485 * connection. */ 486 #define OVS_CS_F_REPLY_DIR 0x08 /* Flow is in the reply direction. */ 487 #define OVS_CS_F_INVALID 0x10 /* Could not track connection. */ 488 #define OVS_CS_F_TRACKED 0x20 /* Conntrack has occurred. */ 489 #define OVS_CS_F_SRC_NAT 0x40 /* Packet's source address/port was 490 * mangled by NAT. 491 */ 492 #define OVS_CS_F_DST_NAT 0x80 /* Packet's destination address/port 493 * was mangled by NAT. 494 */ 495 496 #define OVS_CS_F_NAT_MASK (OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT) 497 498 struct ovs_key_ct_tuple_ipv4 { 499 __be32 ipv4_src; 500 __be32 ipv4_dst; 501 __be16 src_port; 502 __be16 dst_port; 503 __u8 ipv4_proto; 504 }; 505 506 struct ovs_key_ct_tuple_ipv6 { 507 __be32 ipv6_src[4]; 508 __be32 ipv6_dst[4]; 509 __be16 src_port; 510 __be16 dst_port; 511 __u8 ipv6_proto; 512 }; 513 514 enum ovs_nsh_key_attr { 515 OVS_NSH_KEY_ATTR_UNSPEC, 516 OVS_NSH_KEY_ATTR_BASE, /* struct ovs_nsh_key_base. */ 517 OVS_NSH_KEY_ATTR_MD1, /* struct ovs_nsh_key_md1. */ 518 OVS_NSH_KEY_ATTR_MD2, /* variable-length octets for MD type 2. */ 519 __OVS_NSH_KEY_ATTR_MAX 520 }; 521 522 #define OVS_NSH_KEY_ATTR_MAX (__OVS_NSH_KEY_ATTR_MAX - 1) 523 524 struct ovs_nsh_key_base { 525 __u8 flags; 526 __u8 ttl; 527 __u8 mdtype; 528 __u8 np; 529 __be32 path_hdr; 530 }; 531 532 #define NSH_MD1_CONTEXT_SIZE 4 533 534 struct ovs_nsh_key_md1 { 535 __be32 context[NSH_MD1_CONTEXT_SIZE]; 536 }; 537 538 /** 539 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands. 540 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow 541 * key. Always present in notifications. Required for all requests (except 542 * dumps). 543 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying 544 * the actions to take for packets that match the key. Always present in 545 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for 546 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without 547 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions, 548 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given. 549 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this 550 * flow. Present in notifications if the stats would be nonzero. Ignored in 551 * requests. 552 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the 553 * TCP flags seen on packets in this flow. Only present in notifications for 554 * TCP flows, and only if it would be nonzero. Ignored in requests. 555 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on 556 * the system monotonic clock, at which a packet was last processed for this 557 * flow. Only present in notifications if a packet has been processed for this 558 * flow. Ignored in requests. 559 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the 560 * last-used time, accumulated TCP flags, and statistics for this flow. 561 * Otherwise ignored in requests. Never present in notifications. 562 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the 563 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact 564 * match with corresponding flow key bit, while mask bit value '0' specifies 565 * a wildcarded match. Omitting attribute is treated as wildcarding all 566 * corresponding fields. Optional for all requests. If not present, 567 * all flow key bits are exact match bits. 568 * @OVS_FLOW_ATTR_UFID: A value between 1-16 octets specifying a unique 569 * identifier for the flow. Causes the flow to be indexed by this value rather 570 * than the value of the %OVS_FLOW_ATTR_KEY attribute. Optional for all 571 * requests. Present in notifications if the flow was created with this 572 * attribute. 573 * @OVS_FLOW_ATTR_UFID_FLAGS: A 32-bit value of OR'd %OVS_UFID_F_* 574 * flags that provide alternative semantics for flow installation and 575 * retrieval. Optional for all requests. 576 * 577 * These attributes follow the &struct ovs_header within the Generic Netlink 578 * payload for %OVS_FLOW_* commands. 579 */ 580 enum ovs_flow_attr { 581 OVS_FLOW_ATTR_UNSPEC, 582 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */ 583 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 584 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */ 585 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */ 586 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */ 587 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */ 588 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */ 589 OVS_FLOW_ATTR_PROBE, /* Flow operation is a feature probe, error 590 * logging should be suppressed. */ 591 OVS_FLOW_ATTR_UFID, /* Variable length unique flow identifier. */ 592 OVS_FLOW_ATTR_UFID_FLAGS,/* u32 of OVS_UFID_F_*. */ 593 OVS_FLOW_ATTR_PAD, 594 __OVS_FLOW_ATTR_MAX 595 }; 596 597 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1) 598 599 /** 600 * Omit attributes for notifications. 601 * 602 * If a datapath request contains an %OVS_UFID_F_OMIT_* flag, then the datapath 603 * may omit the corresponding %OVS_FLOW_ATTR_* from the response. 604 */ 605 #define OVS_UFID_F_OMIT_KEY (1 << 0) 606 #define OVS_UFID_F_OMIT_MASK (1 << 1) 607 #define OVS_UFID_F_OMIT_ACTIONS (1 << 2) 608 609 /** 610 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action. 611 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with 612 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of 613 * %UINT32_MAX samples all packets and intermediate values sample intermediate 614 * fractions of packets. 615 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event. 616 * Actions are passed as nested attributes. 617 * 618 * Executes the specified actions with the given probability on a per-packet 619 * basis. 620 */ 621 enum ovs_sample_attr { 622 OVS_SAMPLE_ATTR_UNSPEC, 623 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */ 624 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 625 __OVS_SAMPLE_ATTR_MAX, 626 627 #ifdef __KERNEL__ 628 OVS_SAMPLE_ATTR_ARG /* struct sample_arg */ 629 #endif 630 }; 631 632 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1) 633 634 #ifdef __KERNEL__ 635 struct sample_arg { 636 bool exec; /* When true, actions in sample will not 637 * change flow keys. False otherwise. 638 */ 639 u32 probability; /* Same value as 640 * 'OVS_SAMPLE_ATTR_PROBABILITY'. 641 */ 642 }; 643 #endif 644 645 /** 646 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action. 647 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION 648 * message should be sent. Required. 649 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is 650 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA. 651 * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get 652 * tunnel info. 653 * @OVS_USERSPACE_ATTR_ACTIONS: If present, send actions with upcall. 654 */ 655 enum ovs_userspace_attr { 656 OVS_USERSPACE_ATTR_UNSPEC, 657 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */ 658 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */ 659 OVS_USERSPACE_ATTR_EGRESS_TUN_PORT, /* Optional, u32 output port 660 * to get tunnel info. */ 661 OVS_USERSPACE_ATTR_ACTIONS, /* Optional flag to get actions. */ 662 __OVS_USERSPACE_ATTR_MAX 663 }; 664 665 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1) 666 667 struct ovs_action_trunc { 668 __u32 max_len; /* Max packet size in bytes. */ 669 }; 670 671 /** 672 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument. 673 * @mpls_lse: MPLS label stack entry to push. 674 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame. 675 * 676 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and 677 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected. 678 */ 679 struct ovs_action_push_mpls { 680 __be32 mpls_lse; 681 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */ 682 }; 683 684 /** 685 * struct ovs_action_add_mpls - %OVS_ACTION_ATTR_ADD_MPLS action 686 * argument. 687 * @mpls_lse: MPLS label stack entry to push. 688 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame. 689 * @tun_flags: MPLS tunnel attributes. 690 * 691 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and 692 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected. 693 */ 694 struct ovs_action_add_mpls { 695 __be32 mpls_lse; 696 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */ 697 __u16 tun_flags; 698 }; 699 700 #define OVS_MPLS_L3_TUNNEL_FLAG_MASK (1 << 0) /* Flag to specify the place of 701 * insertion of MPLS header. 702 * When false, the MPLS header 703 * will be inserted at the start 704 * of the packet. 705 * When true, the MPLS header 706 * will be inserted at the start 707 * of the l3 header. 708 */ 709 710 /** 711 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument. 712 * @vlan_tpid: Tag protocol identifier (TPID) to push. 713 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set 714 * (but it will not be set in the 802.1Q header that is pushed). 715 * 716 * The @vlan_tpid value is typically %ETH_P_8021Q or %ETH_P_8021AD. 717 * The only acceptable TPID values are those that the kernel module also parses 718 * as 802.1Q or 802.1AD headers, to prevent %OVS_ACTION_ATTR_PUSH_VLAN followed 719 * by %OVS_ACTION_ATTR_POP_VLAN from having surprising results. 720 */ 721 struct ovs_action_push_vlan { 722 __be16 vlan_tpid; /* 802.1Q or 802.1ad TPID. */ 723 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */ 724 }; 725 726 /* Data path hash algorithm for computing Datapath hash. 727 * 728 * The algorithm type only specifies the fields in a flow 729 * will be used as part of the hash. Each datapath is free 730 * to use its own hash algorithm. The hash value will be 731 * opaque to the user space daemon. 732 */ 733 enum ovs_hash_alg { 734 OVS_HASH_ALG_L4, 735 }; 736 737 /* 738 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument. 739 * @hash_alg: Algorithm used to compute hash prior to recirculation. 740 * @hash_basis: basis used for computing hash. 741 */ 742 struct ovs_action_hash { 743 __u32 hash_alg; /* One of ovs_hash_alg. */ 744 __u32 hash_basis; 745 }; 746 747 /** 748 * enum ovs_ct_attr - Attributes for %OVS_ACTION_ATTR_CT action. 749 * @OVS_CT_ATTR_COMMIT: If present, commits the connection to the conntrack 750 * table. This allows future packets for the same connection to be identified 751 * as 'established' or 'related'. The flow key for the current packet will 752 * retain the pre-commit connection state. 753 * @OVS_CT_ATTR_ZONE: u16 connection tracking zone. 754 * @OVS_CT_ATTR_MARK: u32 value followed by u32 mask. For each bit set in the 755 * mask, the corresponding bit in the value is copied to the connection 756 * tracking mark field in the connection. 757 * @OVS_CT_ATTR_LABELS: %OVS_CT_LABELS_LEN value followed by %OVS_CT_LABELS_LEN 758 * mask. For each bit set in the mask, the corresponding bit in the value is 759 * copied to the connection tracking label field in the connection. 760 * @OVS_CT_ATTR_HELPER: variable length string defining conntrack ALG. 761 * @OVS_CT_ATTR_NAT: Nested OVS_NAT_ATTR_* for performing L3 network address 762 * translation (NAT) on the packet. 763 * @OVS_CT_ATTR_FORCE_COMMIT: Like %OVS_CT_ATTR_COMMIT, but instead of doing 764 * nothing if the connection is already committed will check that the current 765 * packet is in conntrack entry's original direction. If directionality does 766 * not match, will delete the existing conntrack entry and commit a new one. 767 * @OVS_CT_ATTR_EVENTMASK: Mask of bits indicating which conntrack event types 768 * (enum ip_conntrack_events IPCT_*) should be reported. For any bit set to 769 * zero, the corresponding event type is not generated. Default behavior 770 * depends on system configuration, but typically all event types are 771 * generated, hence listening on NFNLGRP_CONNTRACK_UPDATE events may get a lot 772 * of events. Explicitly passing this attribute allows limiting the updates 773 * received to the events of interest. The bit 1 << IPCT_NEW, 1 << 774 * IPCT_RELATED, and 1 << IPCT_DESTROY must be set to ones for those events to 775 * be received on NFNLGRP_CONNTRACK_NEW and NFNLGRP_CONNTRACK_DESTROY groups, 776 * respectively. Remaining bits control the changes for which an event is 777 * delivered on the NFNLGRP_CONNTRACK_UPDATE group. 778 * @OVS_CT_ATTR_TIMEOUT: Variable length string defining conntrack timeout. 779 */ 780 enum ovs_ct_attr { 781 OVS_CT_ATTR_UNSPEC, 782 OVS_CT_ATTR_COMMIT, /* No argument, commits connection. */ 783 OVS_CT_ATTR_ZONE, /* u16 zone id. */ 784 OVS_CT_ATTR_MARK, /* mark to associate with this connection. */ 785 OVS_CT_ATTR_LABELS, /* labels to associate with this connection. */ 786 OVS_CT_ATTR_HELPER, /* netlink helper to assist detection of 787 related connections. */ 788 OVS_CT_ATTR_NAT, /* Nested OVS_NAT_ATTR_* */ 789 OVS_CT_ATTR_FORCE_COMMIT, /* No argument */ 790 OVS_CT_ATTR_EVENTMASK, /* u32 mask of IPCT_* events. */ 791 OVS_CT_ATTR_TIMEOUT, /* Associate timeout with this connection for 792 * fine-grain timeout tuning. */ 793 __OVS_CT_ATTR_MAX 794 }; 795 796 #define OVS_CT_ATTR_MAX (__OVS_CT_ATTR_MAX - 1) 797 798 /** 799 * enum ovs_nat_attr - Attributes for %OVS_CT_ATTR_NAT. 800 * 801 * @OVS_NAT_ATTR_SRC: Flag for Source NAT (mangle source address/port). 802 * @OVS_NAT_ATTR_DST: Flag for Destination NAT (mangle destination 803 * address/port). Only one of (@OVS_NAT_ATTR_SRC, @OVS_NAT_ATTR_DST) may be 804 * specified. Effective only for packets for ct_state NEW connections. 805 * Packets of committed connections are mangled by the NAT action according to 806 * the committed NAT type regardless of the flags specified. As a corollary, a 807 * NAT action without a NAT type flag will only mangle packets of committed 808 * connections. The following NAT attributes only apply for NEW 809 * (non-committed) connections, and they may be included only when the CT 810 * action has the @OVS_CT_ATTR_COMMIT flag and either @OVS_NAT_ATTR_SRC or 811 * @OVS_NAT_ATTR_DST is also included. 812 * @OVS_NAT_ATTR_IP_MIN: struct in_addr or struct in6_addr 813 * @OVS_NAT_ATTR_IP_MAX: struct in_addr or struct in6_addr 814 * @OVS_NAT_ATTR_PROTO_MIN: u16 L4 protocol specific lower boundary (port) 815 * @OVS_NAT_ATTR_PROTO_MAX: u16 L4 protocol specific upper boundary (port) 816 * @OVS_NAT_ATTR_PERSISTENT: Flag for persistent IP mapping across reboots 817 * @OVS_NAT_ATTR_PROTO_HASH: Flag for pseudo random L4 port mapping (MD5) 818 * @OVS_NAT_ATTR_PROTO_RANDOM: Flag for fully randomized L4 port mapping 819 */ 820 enum ovs_nat_attr { 821 OVS_NAT_ATTR_UNSPEC, 822 OVS_NAT_ATTR_SRC, 823 OVS_NAT_ATTR_DST, 824 OVS_NAT_ATTR_IP_MIN, 825 OVS_NAT_ATTR_IP_MAX, 826 OVS_NAT_ATTR_PROTO_MIN, 827 OVS_NAT_ATTR_PROTO_MAX, 828 OVS_NAT_ATTR_PERSISTENT, 829 OVS_NAT_ATTR_PROTO_HASH, 830 OVS_NAT_ATTR_PROTO_RANDOM, 831 __OVS_NAT_ATTR_MAX, 832 }; 833 834 #define OVS_NAT_ATTR_MAX (__OVS_NAT_ATTR_MAX - 1) 835 836 /* 837 * struct ovs_action_push_eth - %OVS_ACTION_ATTR_PUSH_ETH action argument. 838 * @addresses: Source and destination MAC addresses. 839 * @eth_type: Ethernet type 840 */ 841 struct ovs_action_push_eth { 842 struct ovs_key_ethernet addresses; 843 }; 844 845 /* 846 * enum ovs_check_pkt_len_attr - Attributes for %OVS_ACTION_ATTR_CHECK_PKT_LEN. 847 * 848 * @OVS_CHECK_PKT_LEN_ATTR_PKT_LEN: u16 Packet length to check for. 849 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER: Nested OVS_ACTION_ATTR_* 850 * actions to apply if the packer length is greater than the specified 851 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN. 852 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL - Nested OVS_ACTION_ATTR_* 853 * actions to apply if the packer length is lesser or equal to the specified 854 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN. 855 */ 856 enum ovs_check_pkt_len_attr { 857 OVS_CHECK_PKT_LEN_ATTR_UNSPEC, 858 OVS_CHECK_PKT_LEN_ATTR_PKT_LEN, 859 OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER, 860 OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL, 861 __OVS_CHECK_PKT_LEN_ATTR_MAX, 862 863 #ifdef __KERNEL__ 864 OVS_CHECK_PKT_LEN_ATTR_ARG /* struct check_pkt_len_arg */ 865 #endif 866 }; 867 868 #define OVS_CHECK_PKT_LEN_ATTR_MAX (__OVS_CHECK_PKT_LEN_ATTR_MAX - 1) 869 870 #ifdef __KERNEL__ 871 struct check_pkt_len_arg { 872 u16 pkt_len; /* Same value as OVS_CHECK_PKT_LEN_ATTR_PKT_LEN'. */ 873 bool exec_for_greater; /* When true, actions in IF_GREATER will 874 * not change flow keys. False otherwise. 875 */ 876 bool exec_for_lesser_equal; /* When true, actions in IF_LESS_EQUAL 877 * will not change flow keys. False 878 * otherwise. 879 */ 880 }; 881 #endif 882 883 /** 884 * enum ovs_action_attr - Action types. 885 * 886 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port. 887 * @OVS_ACTION_ATTR_TRUNC: Output packet to port with truncated packet size. 888 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested 889 * %OVS_USERSPACE_ATTR_* attributes. 890 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The 891 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its 892 * value. 893 * @OVS_ACTION_ATTR_SET_MASKED: Replaces the contents of an existing header. A 894 * nested %OVS_KEY_ATTR_* attribute specifies a header to modify, its value, 895 * and a mask. For every bit set in the mask, the corresponding bit value 896 * is copied from the value to the packet header field, rest of the bits are 897 * left unchanged. The non-masked value bits must be passed in as zeroes. 898 * Masking is not supported for the %OVS_KEY_ATTR_TUNNEL attribute. 899 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q or 802.1ad header 900 * onto the packet. 901 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q or 802.1ad header 902 * from the packet. 903 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in 904 * the nested %OVS_SAMPLE_ATTR_* attributes. 905 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the 906 * top of the packets MPLS label stack. Set the ethertype of the 907 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to 908 * indicate the new packet contents. 909 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the 910 * packet's MPLS label stack. Set the encapsulating frame's ethertype to 911 * indicate the new packet contents. This could potentially still be 912 * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there 913 * is no MPLS label stack, as determined by ethertype, no action is taken. 914 * @OVS_ACTION_ATTR_CT: Track the connection. Populate the conntrack-related 915 * entries in the flow key. 916 * @OVS_ACTION_ATTR_PUSH_ETH: Push a new outermost Ethernet header onto the 917 * packet. 918 * @OVS_ACTION_ATTR_POP_ETH: Pop the outermost Ethernet header off the 919 * packet. 920 * @OVS_ACTION_ATTR_CT_CLEAR: Clear conntrack state from the packet. 921 * @OVS_ACTION_ATTR_PUSH_NSH: push NSH header to the packet. 922 * @OVS_ACTION_ATTR_POP_NSH: pop the outermost NSH header off the packet. 923 * @OVS_ACTION_ATTR_METER: Run packet through a meter, which may drop the 924 * packet, or modify the packet (e.g., change the DSCP field). 925 * @OVS_ACTION_ATTR_CLONE: make a copy of the packet and execute a list of 926 * actions without affecting the original packet and key. 927 * @OVS_ACTION_ATTR_CHECK_PKT_LEN: Check the packet length and execute a set 928 * of actions if greater than the specified packet length, else execute 929 * another set of actions. 930 * @OVS_ACTION_ATTR_ADD_MPLS: Push a new MPLS label stack entry at the 931 * start of the packet or at the start of the l3 header depending on the value 932 * of l3 tunnel flag in the tun_flags field of OVS_ACTION_ATTR_ADD_MPLS 933 * argument. 934 * 935 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all 936 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment 937 * type may not be changed. 938 * 939 * @OVS_ACTION_ATTR_SET_TO_MASKED: Kernel internal masked set action translated 940 * from the @OVS_ACTION_ATTR_SET. 941 */ 942 943 enum ovs_action_attr { 944 OVS_ACTION_ATTR_UNSPEC, 945 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */ 946 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */ 947 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */ 948 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */ 949 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */ 950 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */ 951 OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */ 952 OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */ 953 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */ 954 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */ 955 OVS_ACTION_ATTR_SET_MASKED, /* One nested OVS_KEY_ATTR_* including 956 * data immediately followed by a mask. 957 * The data must be zero for the unmasked 958 * bits. */ 959 OVS_ACTION_ATTR_CT, /* Nested OVS_CT_ATTR_* . */ 960 OVS_ACTION_ATTR_TRUNC, /* u32 struct ovs_action_trunc. */ 961 OVS_ACTION_ATTR_PUSH_ETH, /* struct ovs_action_push_eth. */ 962 OVS_ACTION_ATTR_POP_ETH, /* No argument. */ 963 OVS_ACTION_ATTR_CT_CLEAR, /* No argument. */ 964 OVS_ACTION_ATTR_PUSH_NSH, /* Nested OVS_NSH_KEY_ATTR_*. */ 965 OVS_ACTION_ATTR_POP_NSH, /* No argument. */ 966 OVS_ACTION_ATTR_METER, /* u32 meter ID. */ 967 OVS_ACTION_ATTR_CLONE, /* Nested OVS_CLONE_ATTR_*. */ 968 OVS_ACTION_ATTR_CHECK_PKT_LEN, /* Nested OVS_CHECK_PKT_LEN_ATTR_*. */ 969 OVS_ACTION_ATTR_ADD_MPLS, /* struct ovs_action_add_mpls. */ 970 OVS_ACTION_ATTR_DEC_TTL, /* Nested OVS_DEC_TTL_ATTR_*. */ 971 972 __OVS_ACTION_ATTR_MAX, /* Nothing past this will be accepted 973 * from userspace. */ 974 975 #ifdef __KERNEL__ 976 OVS_ACTION_ATTR_SET_TO_MASKED, /* Kernel module internal masked 977 * set action converted from 978 * OVS_ACTION_ATTR_SET. */ 979 #endif 980 }; 981 982 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1) 983 984 /* Meters. */ 985 #define OVS_METER_FAMILY "ovs_meter" 986 #define OVS_METER_MCGROUP "ovs_meter" 987 #define OVS_METER_VERSION 0x1 988 989 enum ovs_meter_cmd { 990 OVS_METER_CMD_UNSPEC, 991 OVS_METER_CMD_FEATURES, /* Get features supported by the datapath. */ 992 OVS_METER_CMD_SET, /* Add or modify a meter. */ 993 OVS_METER_CMD_DEL, /* Delete a meter. */ 994 OVS_METER_CMD_GET /* Get meter stats. */ 995 }; 996 997 enum ovs_meter_attr { 998 OVS_METER_ATTR_UNSPEC, 999 OVS_METER_ATTR_ID, /* u32 meter ID within datapath. */ 1000 OVS_METER_ATTR_KBPS, /* No argument. If set, units in kilobits 1001 * per second. Otherwise, units in 1002 * packets per second. 1003 */ 1004 OVS_METER_ATTR_STATS, /* struct ovs_flow_stats for the meter. */ 1005 OVS_METER_ATTR_BANDS, /* Nested attributes for meter bands. */ 1006 OVS_METER_ATTR_USED, /* u64 msecs last used in monotonic time. */ 1007 OVS_METER_ATTR_CLEAR, /* Flag to clear stats, used. */ 1008 OVS_METER_ATTR_MAX_METERS, /* u32 number of meters supported. */ 1009 OVS_METER_ATTR_MAX_BANDS, /* u32 max number of bands per meter. */ 1010 OVS_METER_ATTR_PAD, 1011 __OVS_METER_ATTR_MAX 1012 }; 1013 1014 #define OVS_METER_ATTR_MAX (__OVS_METER_ATTR_MAX - 1) 1015 1016 enum ovs_band_attr { 1017 OVS_BAND_ATTR_UNSPEC, 1018 OVS_BAND_ATTR_TYPE, /* u32 OVS_METER_BAND_TYPE_* constant. */ 1019 OVS_BAND_ATTR_RATE, /* u32 band rate in meter units (see above). */ 1020 OVS_BAND_ATTR_BURST, /* u32 burst size in meter units. */ 1021 OVS_BAND_ATTR_STATS, /* struct ovs_flow_stats for the band. */ 1022 __OVS_BAND_ATTR_MAX 1023 }; 1024 1025 #define OVS_BAND_ATTR_MAX (__OVS_BAND_ATTR_MAX - 1) 1026 1027 enum ovs_meter_band_type { 1028 OVS_METER_BAND_TYPE_UNSPEC, 1029 OVS_METER_BAND_TYPE_DROP, /* Drop exceeding packets. */ 1030 __OVS_METER_BAND_TYPE_MAX 1031 }; 1032 1033 #define OVS_METER_BAND_TYPE_MAX (__OVS_METER_BAND_TYPE_MAX - 1) 1034 1035 /* Conntrack limit */ 1036 #define OVS_CT_LIMIT_FAMILY "ovs_ct_limit" 1037 #define OVS_CT_LIMIT_MCGROUP "ovs_ct_limit" 1038 #define OVS_CT_LIMIT_VERSION 0x1 1039 1040 enum ovs_ct_limit_cmd { 1041 OVS_CT_LIMIT_CMD_UNSPEC, 1042 OVS_CT_LIMIT_CMD_SET, /* Add or modify ct limit. */ 1043 OVS_CT_LIMIT_CMD_DEL, /* Delete ct limit. */ 1044 OVS_CT_LIMIT_CMD_GET /* Get ct limit. */ 1045 }; 1046 1047 enum ovs_ct_limit_attr { 1048 OVS_CT_LIMIT_ATTR_UNSPEC, 1049 OVS_CT_LIMIT_ATTR_ZONE_LIMIT, /* Nested struct ovs_zone_limit. */ 1050 __OVS_CT_LIMIT_ATTR_MAX 1051 }; 1052 1053 #define OVS_CT_LIMIT_ATTR_MAX (__OVS_CT_LIMIT_ATTR_MAX - 1) 1054 1055 #define OVS_ZONE_LIMIT_DEFAULT_ZONE -1 1056 1057 struct ovs_zone_limit { 1058 int zone_id; 1059 __u32 limit; 1060 __u32 count; 1061 }; 1062 1063 enum ovs_dec_ttl_attr { 1064 OVS_DEC_TTL_ATTR_UNSPEC, 1065 OVS_DEC_TTL_ATTR_ACTION, /* Nested struct nlattr */ 1066 __OVS_DEC_TTL_ATTR_MAX 1067 }; 1068 1069 #define OVS_DEC_TTL_ATTR_MAX (__OVS_DEC_TTL_ATTR_MAX - 1) 1070 1071 #endif /* _LINUX_OPENVSWITCH_H */ 1072
