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