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The C and C++ Include Header Files
cat -n /usr/include/linux/openvswitch.h
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 __LINUX_OPENVSWITCH_H 22 #define __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 * @OVS_DP_ATTR_IFINDEX: Interface index for a new datapath netdev. Only 80 * valid for %OVS_DP_CMD_NEW requests. 81 * 82 * These attributes follow the &struct ovs_header within the Generic Netlink 83 * payload for %OVS_DP_* commands. 84 */ 85 enum ovs_datapath_attr { 86 OVS_DP_ATTR_UNSPEC, 87 OVS_DP_ATTR_NAME, /* name of dp_ifindex netdev */ 88 OVS_DP_ATTR_UPCALL_PID, /* Netlink PID to receive upcalls */ 89 OVS_DP_ATTR_STATS, /* struct ovs_dp_stats */ 90 OVS_DP_ATTR_MEGAFLOW_STATS, /* struct ovs_dp_megaflow_stats */ 91 OVS_DP_ATTR_USER_FEATURES, /* OVS_DP_F_* */ 92 OVS_DP_ATTR_PAD, 93 OVS_DP_ATTR_MASKS_CACHE_SIZE, 94 OVS_DP_ATTR_PER_CPU_PIDS, /* Netlink PIDS to receive upcalls in 95 * per-cpu dispatch mode 96 */ 97 OVS_DP_ATTR_IFINDEX, 98 __OVS_DP_ATTR_MAX 99 }; 100 101 #define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1) 102 103 struct ovs_dp_stats { 104 __u64 n_hit; /* Number of flow table matches. */ 105 __u64 n_missed; /* Number of flow table misses. */ 106 __u64 n_lost; /* Number of misses not sent to userspace. */ 107 __u64 n_flows; /* Number of flows present */ 108 }; 109 110 struct ovs_dp_megaflow_stats { 111 __u64 n_mask_hit; /* Number of masks used for flow lookups. */ 112 __u32 n_masks; /* Number of masks for the datapath. */ 113 __u32 pad0; /* Pad for future expension. */ 114 __u64 n_cache_hit; /* Number of cache matches for flow lookups. */ 115 __u64 pad1; /* Pad for future expension. */ 116 }; 117 118 struct ovs_vport_stats { 119 __u64 rx_packets; /* total packets received */ 120 __u64 tx_packets; /* total packets transmitted */ 121 __u64 rx_bytes; /* total bytes received */ 122 __u64 tx_bytes; /* total bytes transmitted */ 123 __u64 rx_errors; /* bad packets received */ 124 __u64 tx_errors; /* packet transmit problems */ 125 __u64 rx_dropped; /* no space in linux buffers */ 126 __u64 tx_dropped; /* no space available in linux */ 127 }; 128 129 /* Allow last Netlink attribute to be unaligned */ 130 #define OVS_DP_F_UNALIGNED (1 << 0) 131 132 /* Allow datapath to associate multiple Netlink PIDs to each vport */ 133 #define OVS_DP_F_VPORT_PIDS (1 << 1) 134 135 /* Allow tc offload recirc sharing */ 136 #define OVS_DP_F_TC_RECIRC_SHARING (1 << 2) 137 138 /* Allow per-cpu dispatch of upcalls */ 139 #define OVS_DP_F_DISPATCH_UPCALL_PER_CPU (1 << 3) 140 141 /* Fixed logical ports. */ 142 #define OVSP_LOCAL ((__u32)0) 143 144 /* Packet transfer. */ 145 146 #define OVS_PACKET_FAMILY "ovs_packet" 147 #define OVS_PACKET_VERSION 0x1 148 149 enum ovs_packet_cmd { 150 OVS_PACKET_CMD_UNSPEC, 151 152 /* Kernel-to-user notifications. */ 153 OVS_PACKET_CMD_MISS, /* Flow table miss. */ 154 OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */ 155 156 /* Userspace commands. */ 157 OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */ 158 }; 159 160 /** 161 * enum ovs_packet_attr - attributes for %OVS_PACKET_* commands. 162 * @OVS_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire 163 * packet as received, from the start of the Ethernet header onward. For 164 * %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by 165 * actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is 166 * the flow key extracted from the packet as originally received. 167 * @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key 168 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows 169 * userspace to adapt its flow setup strategy by comparing its notion of the 170 * flow key against the kernel's. 171 * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used 172 * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes. 173 * Also used in upcall when %OVS_ACTION_ATTR_USERSPACE has optional 174 * %OVS_USERSPACE_ATTR_ACTIONS attribute. 175 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION 176 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an 177 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content 178 * specified there. 179 * @OVS_PACKET_ATTR_EGRESS_TUN_KEY: Present for an %OVS_PACKET_CMD_ACTION 180 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an 181 * %OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute, which is sent only if the 182 * output port is actually a tunnel port. Contains the output tunnel key 183 * extracted from the packet as nested %OVS_TUNNEL_KEY_ATTR_* attributes. 184 * @OVS_PACKET_ATTR_MRU: Present for an %OVS_PACKET_CMD_ACTION and 185 * @OVS_PACKET_ATTR_LEN: Packet size before truncation. 186 * %OVS_PACKET_ATTR_USERSPACE action specify the Maximum received fragment 187 * size. 188 * @OVS_PACKET_ATTR_HASH: Packet hash info (e.g. hash, sw_hash and l4_hash in skb). 189 * @OVS_PACKET_ATTR_UPCALL_PID: Netlink PID to use for upcalls while 190 * processing %OVS_PACKET_CMD_EXECUTE. Takes precedence over all other ways 191 * to determine the Netlink PID including %OVS_USERSPACE_ATTR_PID, 192 * %OVS_DP_ATTR_UPCALL_PID, %OVS_DP_ATTR_PER_CPU_PIDS and the 193 * %OVS_VPORT_ATTR_UPCALL_PID. 194 * 195 * These attributes follow the &struct ovs_header within the Generic Netlink 196 * payload for %OVS_PACKET_* commands. 197 */ 198 enum ovs_packet_attr { 199 OVS_PACKET_ATTR_UNSPEC, 200 OVS_PACKET_ATTR_PACKET, /* Packet data. */ 201 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */ 202 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 203 OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */ 204 OVS_PACKET_ATTR_EGRESS_TUN_KEY, /* Nested OVS_TUNNEL_KEY_ATTR_* 205 attributes. */ 206 OVS_PACKET_ATTR_UNUSED1, 207 OVS_PACKET_ATTR_UNUSED2, 208 OVS_PACKET_ATTR_PROBE, /* Packet operation is a feature probe, 209 error logging should be suppressed. */ 210 OVS_PACKET_ATTR_MRU, /* Maximum received IP fragment size. */ 211 OVS_PACKET_ATTR_LEN, /* Packet size before truncation. */ 212 OVS_PACKET_ATTR_HASH, /* Packet hash. */ 213 OVS_PACKET_ATTR_UPCALL_PID, /* u32 Netlink PID. */ 214 __OVS_PACKET_ATTR_MAX 215 }; 216 217 #define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1) 218 219 /* Virtual ports. */ 220 221 #define OVS_VPORT_FAMILY "ovs_vport" 222 #define OVS_VPORT_MCGROUP "ovs_vport" 223 #define OVS_VPORT_VERSION 0x1 224 225 enum ovs_vport_cmd { 226 OVS_VPORT_CMD_UNSPEC, 227 OVS_VPORT_CMD_NEW, 228 OVS_VPORT_CMD_DEL, 229 OVS_VPORT_CMD_GET, 230 OVS_VPORT_CMD_SET 231 }; 232 233 enum ovs_vport_type { 234 OVS_VPORT_TYPE_UNSPEC, 235 OVS_VPORT_TYPE_NETDEV, /* network device */ 236 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */ 237 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */ 238 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */ 239 OVS_VPORT_TYPE_GENEVE, /* Geneve tunnel. */ 240 __OVS_VPORT_TYPE_MAX 241 }; 242 243 #define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1) 244 245 /** 246 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands. 247 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath. 248 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type 249 * of vport. 250 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device 251 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes 252 * plus a null terminator. 253 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information. 254 * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace 255 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets 256 * received on this port. If this is a single-element array of value 0, 257 * upcalls should not be sent. 258 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for 259 * packets sent or received through the vport. 260 * 261 * These attributes follow the &struct ovs_header within the Generic Netlink 262 * payload for %OVS_VPORT_* commands. 263 * 264 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and 265 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is 266 * optional; if not specified a free port number is automatically selected. 267 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type 268 * of vport. 269 * 270 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to 271 * look up the vport to operate on; otherwise dp_idx from the &struct 272 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport. 273 */ 274 enum ovs_vport_attr { 275 OVS_VPORT_ATTR_UNSPEC, 276 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */ 277 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */ 278 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */ 279 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */ 280 OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */ 281 /* receiving upcalls */ 282 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */ 283 OVS_VPORT_ATTR_PAD, 284 OVS_VPORT_ATTR_IFINDEX, 285 OVS_VPORT_ATTR_NETNSID, 286 OVS_VPORT_ATTR_UPCALL_STATS, 287 __OVS_VPORT_ATTR_MAX 288 }; 289 290 #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1) 291 292 /** 293 * enum ovs_vport_upcall_attr - attributes for %OVS_VPORT_UPCALL* commands 294 * @OVS_VPORT_UPCALL_SUCCESS: 64-bit upcall success packets. 295 * @OVS_VPORT_UPCALL_FAIL: 64-bit upcall fail packets. 296 */ 297 enum ovs_vport_upcall_attr { 298 OVS_VPORT_UPCALL_ATTR_SUCCESS, 299 OVS_VPORT_UPCALL_ATTR_FAIL, 300 __OVS_VPORT_UPCALL_ATTR_MAX 301 }; 302 303 #define OVS_VPORT_UPCALL_ATTR_MAX (__OVS_VPORT_UPCALL_ATTR_MAX - 1) 304 305 enum { 306 OVS_VXLAN_EXT_UNSPEC, 307 OVS_VXLAN_EXT_GBP, /* Flag or __u32 */ 308 __OVS_VXLAN_EXT_MAX, 309 }; 310 311 #define OVS_VXLAN_EXT_MAX (__OVS_VXLAN_EXT_MAX - 1) 312 313 314 /* OVS_VPORT_ATTR_OPTIONS attributes for tunnels. 315 */ 316 enum { 317 OVS_TUNNEL_ATTR_UNSPEC, 318 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */ 319 OVS_TUNNEL_ATTR_EXTENSION, 320 __OVS_TUNNEL_ATTR_MAX 321 }; 322 323 #define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1) 324 325 /* Flows. */ 326 327 #define OVS_FLOW_FAMILY "ovs_flow" 328 #define OVS_FLOW_MCGROUP "ovs_flow" 329 #define OVS_FLOW_VERSION 0x1 330 331 enum ovs_flow_cmd { 332 OVS_FLOW_CMD_UNSPEC, 333 OVS_FLOW_CMD_NEW, 334 OVS_FLOW_CMD_DEL, 335 OVS_FLOW_CMD_GET, 336 OVS_FLOW_CMD_SET 337 }; 338 339 struct ovs_flow_stats { 340 __u64 n_packets; /* Number of matched packets. */ 341 __u64 n_bytes; /* Number of matched bytes. */ 342 }; 343 344 enum ovs_key_attr { 345 OVS_KEY_ATTR_UNSPEC, 346 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */ 347 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */ 348 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */ 349 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */ 350 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */ 351 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */ 352 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */ 353 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */ 354 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */ 355 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */ 356 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */ 357 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */ 358 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */ 359 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */ 360 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */ 361 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */ 362 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */ 363 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */ 364 OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash 365 is not computed by the datapath. */ 366 OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */ 367 OVS_KEY_ATTR_MPLS, /* array of struct ovs_key_mpls. 368 * The implementation may restrict 369 * the accepted length of the array. */ 370 OVS_KEY_ATTR_CT_STATE, /* u32 bitmask of OVS_CS_F_* */ 371 OVS_KEY_ATTR_CT_ZONE, /* u16 connection tracking zone. */ 372 OVS_KEY_ATTR_CT_MARK, /* u32 connection tracking mark */ 373 OVS_KEY_ATTR_CT_LABELS, /* 16-octet connection tracking label */ 374 OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4, /* struct ovs_key_ct_tuple_ipv4 */ 375 OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6, /* struct ovs_key_ct_tuple_ipv6 */ 376 OVS_KEY_ATTR_NSH, /* Nested set of ovs_nsh_key_* */ 377 378 /* User space decided to squat on types 29 and 30. They are defined 379 * below, but should not be sent to the kernel. 380 * 381 * WARNING: No new types should be added unless they are defined 382 * for both kernel and user space (no 'ifdef's). It's hard 383 * to keep compatibility otherwise. 384 */ 385 OVS_KEY_ATTR_PACKET_TYPE, /* be32 packet type */ 386 OVS_KEY_ATTR_ND_EXTENSIONS, /* IPv6 Neighbor Discovery extensions */ 387 388 OVS_KEY_ATTR_TUNNEL_INFO, /* struct ip_tunnel_info. 389 * For in-kernel use only. 390 */ 391 OVS_KEY_ATTR_IPV6_EXTHDRS, /* struct ovs_key_ipv6_exthdr */ 392 __OVS_KEY_ATTR_MAX 393 }; 394 395 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1) 396 397 enum ovs_tunnel_key_attr { 398 /* OVS_TUNNEL_KEY_ATTR_NONE, standard nl API requires this attribute! */ 399 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */ 400 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */ 401 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */ 402 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */ 403 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */ 404 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */ 405 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */ 406 OVS_TUNNEL_KEY_ATTR_OAM, /* No argument. OAM frame. */ 407 OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, /* Array of Geneve options. */ 408 OVS_TUNNEL_KEY_ATTR_TP_SRC, /* be16 src Transport Port. */ 409 OVS_TUNNEL_KEY_ATTR_TP_DST, /* be16 dst Transport Port. */ 410 OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS, /* Nested OVS_VXLAN_EXT_* */ 411 OVS_TUNNEL_KEY_ATTR_IPV6_SRC, /* struct in6_addr src IPv6 address. */ 412 OVS_TUNNEL_KEY_ATTR_IPV6_DST, /* struct in6_addr dst IPv6 address. */ 413 OVS_TUNNEL_KEY_ATTR_PAD, 414 OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS, /* struct erspan_metadata */ 415 OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE, /* No argument. IPV4_INFO_BRIDGE mode.*/ 416 __OVS_TUNNEL_KEY_ATTR_MAX 417 }; 418 419 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1) 420 421 /** 422 * enum ovs_frag_type - IPv4 and IPv6 fragment type 423 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment. 424 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0. 425 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset. 426 * 427 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct 428 * ovs_key_ipv6. 429 */ 430 enum ovs_frag_type { 431 OVS_FRAG_TYPE_NONE, 432 OVS_FRAG_TYPE_FIRST, 433 OVS_FRAG_TYPE_LATER, 434 __OVS_FRAG_TYPE_MAX 435 }; 436 437 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1) 438 439 struct ovs_key_ethernet { 440 __u8 eth_src[ETH_ALEN]; 441 __u8 eth_dst[ETH_ALEN]; 442 }; 443 444 struct ovs_key_mpls { 445 __be32 mpls_lse; 446 }; 447 448 struct ovs_key_ipv4 { 449 __be32 ipv4_src; 450 __be32 ipv4_dst; 451 __u8 ipv4_proto; 452 __u8 ipv4_tos; 453 __u8 ipv4_ttl; 454 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */ 455 }; 456 457 struct ovs_key_ipv6 { 458 __be32 ipv6_src[4]; 459 __be32 ipv6_dst[4]; 460 __be32 ipv6_label; /* 20-bits in least-significant bits. */ 461 __u8 ipv6_proto; 462 __u8 ipv6_tclass; 463 __u8 ipv6_hlimit; 464 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */ 465 }; 466 467 /* separate structure to support backward compatibility with older user space */ 468 struct ovs_key_ipv6_exthdrs { 469 __u16 hdrs; 470 }; 471 472 struct ovs_key_tcp { 473 __be16 tcp_src; 474 __be16 tcp_dst; 475 }; 476 477 struct ovs_key_udp { 478 __be16 udp_src; 479 __be16 udp_dst; 480 }; 481 482 struct ovs_key_sctp { 483 __be16 sctp_src; 484 __be16 sctp_dst; 485 }; 486 487 struct ovs_key_icmp { 488 __u8 icmp_type; 489 __u8 icmp_code; 490 }; 491 492 struct ovs_key_icmpv6 { 493 __u8 icmpv6_type; 494 __u8 icmpv6_code; 495 }; 496 497 struct ovs_key_arp { 498 __be32 arp_sip; 499 __be32 arp_tip; 500 __be16 arp_op; 501 __u8 arp_sha[ETH_ALEN]; 502 __u8 arp_tha[ETH_ALEN]; 503 }; 504 505 struct ovs_key_nd { 506 __be32 nd_target[4]; 507 __u8 nd_sll[ETH_ALEN]; 508 __u8 nd_tll[ETH_ALEN]; 509 }; 510 511 #define OVS_CT_LABELS_LEN_32 4 512 #define OVS_CT_LABELS_LEN (OVS_CT_LABELS_LEN_32 * sizeof(__u32)) 513 struct ovs_key_ct_labels { 514 union { 515 __u8 ct_labels[OVS_CT_LABELS_LEN]; 516 __u32 ct_labels_32[OVS_CT_LABELS_LEN_32]; 517 }; 518 }; 519 520 /* OVS_KEY_ATTR_CT_STATE flags */ 521 #define OVS_CS_F_NEW 0x01 /* Beginning of a new connection. */ 522 #define OVS_CS_F_ESTABLISHED 0x02 /* Part of an existing connection. */ 523 #define OVS_CS_F_RELATED 0x04 /* Related to an established 524 * connection. */ 525 #define OVS_CS_F_REPLY_DIR 0x08 /* Flow is in the reply direction. */ 526 #define OVS_CS_F_INVALID 0x10 /* Could not track connection. */ 527 #define OVS_CS_F_TRACKED 0x20 /* Conntrack has occurred. */ 528 #define OVS_CS_F_SRC_NAT 0x40 /* Packet's source address/port was 529 * mangled by NAT. 530 */ 531 #define OVS_CS_F_DST_NAT 0x80 /* Packet's destination address/port 532 * was mangled by NAT. 533 */ 534 535 #define OVS_CS_F_NAT_MASK (OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT) 536 537 struct ovs_key_ct_tuple_ipv4 { 538 __be32 ipv4_src; 539 __be32 ipv4_dst; 540 __be16 src_port; 541 __be16 dst_port; 542 __u8 ipv4_proto; 543 }; 544 545 struct ovs_key_ct_tuple_ipv6 { 546 __be32 ipv6_src[4]; 547 __be32 ipv6_dst[4]; 548 __be16 src_port; 549 __be16 dst_port; 550 __u8 ipv6_proto; 551 }; 552 553 enum ovs_nsh_key_attr { 554 OVS_NSH_KEY_ATTR_UNSPEC, 555 OVS_NSH_KEY_ATTR_BASE, /* struct ovs_nsh_key_base. */ 556 OVS_NSH_KEY_ATTR_MD1, /* struct ovs_nsh_key_md1. */ 557 OVS_NSH_KEY_ATTR_MD2, /* variable-length octets for MD type 2. */ 558 __OVS_NSH_KEY_ATTR_MAX 559 }; 560 561 #define OVS_NSH_KEY_ATTR_MAX (__OVS_NSH_KEY_ATTR_MAX - 1) 562 563 struct ovs_nsh_key_base { 564 __u8 flags; 565 __u8 ttl; 566 __u8 mdtype; 567 __u8 np; 568 __be32 path_hdr; 569 }; 570 571 #define NSH_MD1_CONTEXT_SIZE 4 572 573 struct ovs_nsh_key_md1 { 574 __be32 context[NSH_MD1_CONTEXT_SIZE]; 575 }; 576 577 /** 578 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands. 579 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow 580 * key. Always present in notifications. Required for all requests (except 581 * dumps). 582 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying 583 * the actions to take for packets that match the key. Always present in 584 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for 585 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without 586 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions, 587 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given. 588 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this 589 * flow. Present in notifications if the stats would be nonzero. Ignored in 590 * requests. 591 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the 592 * TCP flags seen on packets in this flow. Only present in notifications for 593 * TCP flows, and only if it would be nonzero. Ignored in requests. 594 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on 595 * the system monotonic clock, at which a packet was last processed for this 596 * flow. Only present in notifications if a packet has been processed for this 597 * flow. Ignored in requests. 598 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the 599 * last-used time, accumulated TCP flags, and statistics for this flow. 600 * Otherwise ignored in requests. Never present in notifications. 601 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the 602 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact 603 * match with corresponding flow key bit, while mask bit value '0' specifies 604 * a wildcarded match. Omitting attribute is treated as wildcarding all 605 * corresponding fields. Optional for all requests. If not present, 606 * all flow key bits are exact match bits. 607 * @OVS_FLOW_ATTR_UFID: A value between 1-16 octets specifying a unique 608 * identifier for the flow. Causes the flow to be indexed by this value rather 609 * than the value of the %OVS_FLOW_ATTR_KEY attribute. Optional for all 610 * requests. Present in notifications if the flow was created with this 611 * attribute. 612 * @OVS_FLOW_ATTR_UFID_FLAGS: A 32-bit value of OR'd %OVS_UFID_F_* 613 * flags that provide alternative semantics for flow installation and 614 * retrieval. Optional for all requests. 615 * 616 * These attributes follow the &struct ovs_header within the Generic Netlink 617 * payload for %OVS_FLOW_* commands. 618 */ 619 enum ovs_flow_attr { 620 OVS_FLOW_ATTR_UNSPEC, 621 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */ 622 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 623 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */ 624 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */ 625 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */ 626 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */ 627 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */ 628 OVS_FLOW_ATTR_PROBE, /* Flow operation is a feature probe, error 629 * logging should be suppressed. */ 630 OVS_FLOW_ATTR_UFID, /* Variable length unique flow identifier. */ 631 OVS_FLOW_ATTR_UFID_FLAGS,/* u32 of OVS_UFID_F_*. */ 632 OVS_FLOW_ATTR_PAD, 633 __OVS_FLOW_ATTR_MAX 634 }; 635 636 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1) 637 638 /** 639 * Omit attributes for notifications. 640 * 641 * If a datapath request contains an %OVS_UFID_F_OMIT_* flag, then the datapath 642 * may omit the corresponding %OVS_FLOW_ATTR_* from the response. 643 */ 644 #define OVS_UFID_F_OMIT_KEY (1 << 0) 645 #define OVS_UFID_F_OMIT_MASK (1 << 1) 646 #define OVS_UFID_F_OMIT_ACTIONS (1 << 2) 647 648 /** 649 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action. 650 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with 651 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of 652 * %UINT32_MAX samples all packets and intermediate values sample intermediate 653 * fractions of packets. 654 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event. 655 * Actions are passed as nested attributes. 656 * 657 * Executes the specified actions with the given probability on a per-packet 658 * basis. Nested actions will be able to access the probability value of the 659 * parent @OVS_ACTION_ATTR_SAMPLE. 660 */ 661 enum ovs_sample_attr { 662 OVS_SAMPLE_ATTR_UNSPEC, 663 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */ 664 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 665 __OVS_SAMPLE_ATTR_MAX, 666 667 }; 668 669 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1) 670 671 672 /** 673 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action. 674 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION 675 * message should be sent. Required. 676 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is 677 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA. 678 * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get 679 * tunnel info. 680 * @OVS_USERSPACE_ATTR_ACTIONS: If present, send actions with upcall. 681 */ 682 enum ovs_userspace_attr { 683 OVS_USERSPACE_ATTR_UNSPEC, 684 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */ 685 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */ 686 OVS_USERSPACE_ATTR_EGRESS_TUN_PORT, /* Optional, u32 output port 687 * to get tunnel info. */ 688 OVS_USERSPACE_ATTR_ACTIONS, /* Optional flag to get actions. */ 689 __OVS_USERSPACE_ATTR_MAX 690 }; 691 692 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1) 693 694 struct ovs_action_trunc { 695 __u32 max_len; /* Max packet size in bytes. */ 696 }; 697 698 /** 699 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument. 700 * @mpls_lse: MPLS label stack entry to push. 701 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame. 702 * 703 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and 704 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected. 705 */ 706 struct ovs_action_push_mpls { 707 __be32 mpls_lse; 708 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */ 709 }; 710 711 /** 712 * struct ovs_action_add_mpls - %OVS_ACTION_ATTR_ADD_MPLS action 713 * argument. 714 * @mpls_lse: MPLS label stack entry to push. 715 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame. 716 * @tun_flags: MPLS tunnel attributes. 717 * 718 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and 719 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected. 720 */ 721 struct ovs_action_add_mpls { 722 __be32 mpls_lse; 723 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */ 724 __u16 tun_flags; 725 }; 726 727 #define OVS_MPLS_L3_TUNNEL_FLAG_MASK (1 << 0) /* Flag to specify the place of 728 * insertion of MPLS header. 729 * When false, the MPLS header 730 * will be inserted at the start 731 * of the packet. 732 * When true, the MPLS header 733 * will be inserted at the start 734 * of the l3 header. 735 */ 736 737 /** 738 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument. 739 * @vlan_tpid: Tag protocol identifier (TPID) to push. 740 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set 741 * (but it will not be set in the 802.1Q header that is pushed). 742 * 743 * The @vlan_tpid value is typically %ETH_P_8021Q or %ETH_P_8021AD. 744 * The only acceptable TPID values are those that the kernel module also parses 745 * as 802.1Q or 802.1AD headers, to prevent %OVS_ACTION_ATTR_PUSH_VLAN followed 746 * by %OVS_ACTION_ATTR_POP_VLAN from having surprising results. 747 */ 748 struct ovs_action_push_vlan { 749 __be16 vlan_tpid; /* 802.1Q or 802.1ad TPID. */ 750 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */ 751 }; 752 753 /* Data path hash algorithm for computing Datapath hash. 754 * 755 * The algorithm type only specifies the fields in a flow 756 * will be used as part of the hash. Each datapath is free 757 * to use its own hash algorithm. The hash value will be 758 * opaque to the user space daemon. 759 */ 760 enum ovs_hash_alg { 761 OVS_HASH_ALG_L4, 762 OVS_HASH_ALG_SYM_L4, 763 }; 764 765 /* 766 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument. 767 * @hash_alg: Algorithm used to compute hash prior to recirculation. 768 * @hash_basis: basis used for computing hash. 769 */ 770 struct ovs_action_hash { 771 __u32 hash_alg; /* One of ovs_hash_alg. */ 772 __u32 hash_basis; 773 }; 774 775 /** 776 * enum ovs_ct_attr - Attributes for %OVS_ACTION_ATTR_CT action. 777 * @OVS_CT_ATTR_COMMIT: If present, commits the connection to the conntrack 778 * table. This allows future packets for the same connection to be identified 779 * as 'established' or 'related'. The flow key for the current packet will 780 * retain the pre-commit connection state. 781 * @OVS_CT_ATTR_ZONE: u16 connection tracking zone. 782 * @OVS_CT_ATTR_MARK: u32 value followed by u32 mask. For each bit set in the 783 * mask, the corresponding bit in the value is copied to the connection 784 * tracking mark field in the connection. 785 * @OVS_CT_ATTR_LABELS: %OVS_CT_LABELS_LEN value followed by %OVS_CT_LABELS_LEN 786 * mask. For each bit set in the mask, the corresponding bit in the value is 787 * copied to the connection tracking label field in the connection. 788 * @OVS_CT_ATTR_HELPER: variable length string defining conntrack ALG. 789 * @OVS_CT_ATTR_NAT: Nested OVS_NAT_ATTR_* for performing L3 network address 790 * translation (NAT) on the packet. 791 * @OVS_CT_ATTR_FORCE_COMMIT: Like %OVS_CT_ATTR_COMMIT, but instead of doing 792 * nothing if the connection is already committed will check that the current 793 * packet is in conntrack entry's original direction. If directionality does 794 * not match, will delete the existing conntrack entry and commit a new one. 795 * @OVS_CT_ATTR_EVENTMASK: Mask of bits indicating which conntrack event types 796 * (enum ip_conntrack_events IPCT_*) should be reported. For any bit set to 797 * zero, the corresponding event type is not generated. Default behavior 798 * depends on system configuration, but typically all event types are 799 * generated, hence listening on NFNLGRP_CONNTRACK_UPDATE events may get a lot 800 * of events. Explicitly passing this attribute allows limiting the updates 801 * received to the events of interest. The bit 1 << IPCT_NEW, 1 << 802 * IPCT_RELATED, and 1 << IPCT_DESTROY must be set to ones for those events to 803 * be received on NFNLGRP_CONNTRACK_NEW and NFNLGRP_CONNTRACK_DESTROY groups, 804 * respectively. Remaining bits control the changes for which an event is 805 * delivered on the NFNLGRP_CONNTRACK_UPDATE group. 806 * @OVS_CT_ATTR_TIMEOUT: Variable length string defining conntrack timeout. 807 */ 808 enum ovs_ct_attr { 809 OVS_CT_ATTR_UNSPEC, 810 OVS_CT_ATTR_COMMIT, /* No argument, commits connection. */ 811 OVS_CT_ATTR_ZONE, /* u16 zone id. */ 812 OVS_CT_ATTR_MARK, /* mark to associate with this connection. */ 813 OVS_CT_ATTR_LABELS, /* labels to associate with this connection. */ 814 OVS_CT_ATTR_HELPER, /* netlink helper to assist detection of 815 related connections. */ 816 OVS_CT_ATTR_NAT, /* Nested OVS_NAT_ATTR_* */ 817 OVS_CT_ATTR_FORCE_COMMIT, /* No argument */ 818 OVS_CT_ATTR_EVENTMASK, /* u32 mask of IPCT_* events. */ 819 OVS_CT_ATTR_TIMEOUT, /* Associate timeout with this connection for 820 * fine-grain timeout tuning. */ 821 __OVS_CT_ATTR_MAX 822 }; 823 824 #define OVS_CT_ATTR_MAX (__OVS_CT_ATTR_MAX - 1) 825 826 /** 827 * enum ovs_nat_attr - Attributes for %OVS_CT_ATTR_NAT. 828 * 829 * @OVS_NAT_ATTR_SRC: Flag for Source NAT (mangle source address/port). 830 * @OVS_NAT_ATTR_DST: Flag for Destination NAT (mangle destination 831 * address/port). Only one of (@OVS_NAT_ATTR_SRC, @OVS_NAT_ATTR_DST) may be 832 * specified. Effective only for packets for ct_state NEW connections. 833 * Packets of committed connections are mangled by the NAT action according to 834 * the committed NAT type regardless of the flags specified. As a corollary, a 835 * NAT action without a NAT type flag will only mangle packets of committed 836 * connections. The following NAT attributes only apply for NEW 837 * (non-committed) connections, and they may be included only when the CT 838 * action has the @OVS_CT_ATTR_COMMIT flag and either @OVS_NAT_ATTR_SRC or 839 * @OVS_NAT_ATTR_DST is also included. 840 * @OVS_NAT_ATTR_IP_MIN: struct in_addr or struct in6_addr 841 * @OVS_NAT_ATTR_IP_MAX: struct in_addr or struct in6_addr 842 * @OVS_NAT_ATTR_PROTO_MIN: u16 L4 protocol specific lower boundary (port) 843 * @OVS_NAT_ATTR_PROTO_MAX: u16 L4 protocol specific upper boundary (port) 844 * @OVS_NAT_ATTR_PERSISTENT: Flag for persistent IP mapping across reboots 845 * @OVS_NAT_ATTR_PROTO_HASH: Flag for pseudo random L4 port mapping (MD5) 846 * @OVS_NAT_ATTR_PROTO_RANDOM: Flag for fully randomized L4 port mapping 847 */ 848 enum ovs_nat_attr { 849 OVS_NAT_ATTR_UNSPEC, 850 OVS_NAT_ATTR_SRC, 851 OVS_NAT_ATTR_DST, 852 OVS_NAT_ATTR_IP_MIN, 853 OVS_NAT_ATTR_IP_MAX, 854 OVS_NAT_ATTR_PROTO_MIN, 855 OVS_NAT_ATTR_PROTO_MAX, 856 OVS_NAT_ATTR_PERSISTENT, 857 OVS_NAT_ATTR_PROTO_HASH, 858 OVS_NAT_ATTR_PROTO_RANDOM, 859 __OVS_NAT_ATTR_MAX, 860 }; 861 862 #define OVS_NAT_ATTR_MAX (__OVS_NAT_ATTR_MAX - 1) 863 864 /* 865 * struct ovs_action_push_eth - %OVS_ACTION_ATTR_PUSH_ETH action argument. 866 * @addresses: Source and destination MAC addresses. 867 * @eth_type: Ethernet type 868 */ 869 struct ovs_action_push_eth { 870 struct ovs_key_ethernet addresses; 871 }; 872 873 /* 874 * enum ovs_check_pkt_len_attr - Attributes for %OVS_ACTION_ATTR_CHECK_PKT_LEN. 875 * 876 * @OVS_CHECK_PKT_LEN_ATTR_PKT_LEN: u16 Packet length to check for. 877 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER: Nested OVS_ACTION_ATTR_* 878 * actions to apply if the packer length is greater than the specified 879 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN. 880 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL - Nested OVS_ACTION_ATTR_* 881 * actions to apply if the packer length is lesser or equal to the specified 882 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN. 883 */ 884 enum ovs_check_pkt_len_attr { 885 OVS_CHECK_PKT_LEN_ATTR_UNSPEC, 886 OVS_CHECK_PKT_LEN_ATTR_PKT_LEN, 887 OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER, 888 OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL, 889 __OVS_CHECK_PKT_LEN_ATTR_MAX, 890 891 }; 892 893 #define OVS_CHECK_PKT_LEN_ATTR_MAX (__OVS_CHECK_PKT_LEN_ATTR_MAX - 1) 894 895 896 #define OVS_PSAMPLE_COOKIE_MAX_SIZE 16 897 /** 898 * enum ovs_psample_attr - Attributes for %OVS_ACTION_ATTR_PSAMPLE 899 * action. 900 * 901 * @OVS_PSAMPLE_ATTR_GROUP: 32-bit number to identify the source of the 902 * sample. 903 * @OVS_PSAMPLE_ATTR_COOKIE: An optional variable-length binary cookie that 904 * contains user-defined metadata. The maximum length is 905 * OVS_PSAMPLE_COOKIE_MAX_SIZE bytes. 906 * 907 * Sends the packet to the psample multicast group with the specified group and 908 * cookie. It is possible to combine this action with the 909 * %OVS_ACTION_ATTR_TRUNC action to limit the size of the sample. 910 */ 911 enum ovs_psample_attr { 912 OVS_PSAMPLE_ATTR_GROUP = 1, /* u32 number. */ 913 OVS_PSAMPLE_ATTR_COOKIE, /* Optional, user specified cookie. */ 914 915 /* private: */ 916 __OVS_PSAMPLE_ATTR_MAX 917 }; 918 919 #define OVS_PSAMPLE_ATTR_MAX (__OVS_PSAMPLE_ATTR_MAX - 1) 920 921 /** 922 * enum ovs_action_attr - Action types. 923 * 924 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port. 925 * @OVS_ACTION_ATTR_TRUNC: Output packet to port with truncated packet size. 926 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested 927 * %OVS_USERSPACE_ATTR_* attributes. 928 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The 929 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its 930 * value. 931 * @OVS_ACTION_ATTR_SET_MASKED: Replaces the contents of an existing header. A 932 * nested %OVS_KEY_ATTR_* attribute specifies a header to modify, its value, 933 * and a mask. For every bit set in the mask, the corresponding bit value 934 * is copied from the value to the packet header field, rest of the bits are 935 * left unchanged. The non-masked value bits must be passed in as zeroes. 936 * Masking is not supported for the %OVS_KEY_ATTR_TUNNEL attribute. 937 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q or 802.1ad header 938 * onto the packet. 939 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q or 802.1ad header 940 * from the packet. 941 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in 942 * the nested %OVS_SAMPLE_ATTR_* attributes. 943 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the 944 * top of the packets MPLS label stack. Set the ethertype of the 945 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to 946 * indicate the new packet contents. 947 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the 948 * packet's MPLS label stack. Set the encapsulating frame's ethertype to 949 * indicate the new packet contents. This could potentially still be 950 * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there 951 * is no MPLS label stack, as determined by ethertype, no action is taken. 952 * @OVS_ACTION_ATTR_CT: Track the connection. Populate the conntrack-related 953 * entries in the flow key. 954 * @OVS_ACTION_ATTR_PUSH_ETH: Push a new outermost Ethernet header onto the 955 * packet. 956 * @OVS_ACTION_ATTR_POP_ETH: Pop the outermost Ethernet header off the 957 * packet. 958 * @OVS_ACTION_ATTR_CT_CLEAR: Clear conntrack state from the packet. 959 * @OVS_ACTION_ATTR_PUSH_NSH: push NSH header to the packet. 960 * @OVS_ACTION_ATTR_POP_NSH: pop the outermost NSH header off the packet. 961 * @OVS_ACTION_ATTR_METER: Run packet through a meter, which may drop the 962 * packet, or modify the packet (e.g., change the DSCP field). 963 * @OVS_ACTION_ATTR_CLONE: make a copy of the packet and execute a list of 964 * actions without affecting the original packet and key. 965 * @OVS_ACTION_ATTR_CHECK_PKT_LEN: Check the packet length and execute a set 966 * of actions if greater than the specified packet length, else execute 967 * another set of actions. 968 * @OVS_ACTION_ATTR_ADD_MPLS: Push a new MPLS label stack entry at the 969 * start of the packet or at the start of the l3 header depending on the value 970 * of l3 tunnel flag in the tun_flags field of OVS_ACTION_ATTR_ADD_MPLS 971 * argument. 972 * @OVS_ACTION_ATTR_DROP: Explicit drop action. 973 * @OVS_ACTION_ATTR_PSAMPLE: Send a sample of the packet to external observers 974 * via psample. 975 * 976 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all 977 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment 978 * type may not be changed. 979 * 980 * @OVS_ACTION_ATTR_SET_TO_MASKED: Kernel internal masked set action translated 981 * from the @OVS_ACTION_ATTR_SET. 982 */ 983 984 enum ovs_action_attr { 985 OVS_ACTION_ATTR_UNSPEC, 986 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */ 987 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */ 988 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */ 989 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */ 990 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */ 991 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */ 992 OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */ 993 OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */ 994 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */ 995 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */ 996 OVS_ACTION_ATTR_SET_MASKED, /* One nested OVS_KEY_ATTR_* including 997 * data immediately followed by a mask. 998 * The data must be zero for the unmasked 999 * bits. */ 1000 OVS_ACTION_ATTR_CT, /* Nested OVS_CT_ATTR_* . */ 1001 OVS_ACTION_ATTR_TRUNC, /* u32 struct ovs_action_trunc. */ 1002 OVS_ACTION_ATTR_PUSH_ETH, /* struct ovs_action_push_eth. */ 1003 OVS_ACTION_ATTR_POP_ETH, /* No argument. */ 1004 OVS_ACTION_ATTR_CT_CLEAR, /* No argument. */ 1005 OVS_ACTION_ATTR_PUSH_NSH, /* Nested OVS_NSH_KEY_ATTR_*. */ 1006 OVS_ACTION_ATTR_POP_NSH, /* No argument. */ 1007 OVS_ACTION_ATTR_METER, /* u32 meter ID. */ 1008 OVS_ACTION_ATTR_CLONE, /* Nested OVS_CLONE_ATTR_*. */ 1009 OVS_ACTION_ATTR_CHECK_PKT_LEN, /* Nested OVS_CHECK_PKT_LEN_ATTR_*. */ 1010 OVS_ACTION_ATTR_ADD_MPLS, /* struct ovs_action_add_mpls. */ 1011 OVS_ACTION_ATTR_DEC_TTL, /* Nested OVS_DEC_TTL_ATTR_*. */ 1012 OVS_ACTION_ATTR_DROP, /* u32 error code. */ 1013 OVS_ACTION_ATTR_PSAMPLE, /* Nested OVS_PSAMPLE_ATTR_*. */ 1014 1015 __OVS_ACTION_ATTR_MAX, /* Nothing past this will be accepted 1016 * from userspace. */ 1017 1018 }; 1019 1020 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1) 1021 1022 /* Meters. */ 1023 #define OVS_METER_FAMILY "ovs_meter" 1024 #define OVS_METER_MCGROUP "ovs_meter" 1025 #define OVS_METER_VERSION 0x1 1026 1027 enum ovs_meter_cmd { 1028 OVS_METER_CMD_UNSPEC, 1029 OVS_METER_CMD_FEATURES, /* Get features supported by the datapath. */ 1030 OVS_METER_CMD_SET, /* Add or modify a meter. */ 1031 OVS_METER_CMD_DEL, /* Delete a meter. */ 1032 OVS_METER_CMD_GET /* Get meter stats. */ 1033 }; 1034 1035 enum ovs_meter_attr { 1036 OVS_METER_ATTR_UNSPEC, 1037 OVS_METER_ATTR_ID, /* u32 meter ID within datapath. */ 1038 OVS_METER_ATTR_KBPS, /* No argument. If set, units in kilobits 1039 * per second. Otherwise, units in 1040 * packets per second. 1041 */ 1042 OVS_METER_ATTR_STATS, /* struct ovs_flow_stats for the meter. */ 1043 OVS_METER_ATTR_BANDS, /* Nested attributes for meter bands. */ 1044 OVS_METER_ATTR_USED, /* u64 msecs last used in monotonic time. */ 1045 OVS_METER_ATTR_CLEAR, /* Flag to clear stats, used. */ 1046 OVS_METER_ATTR_MAX_METERS, /* u32 number of meters supported. */ 1047 OVS_METER_ATTR_MAX_BANDS, /* u32 max number of bands per meter. */ 1048 OVS_METER_ATTR_PAD, 1049 __OVS_METER_ATTR_MAX 1050 }; 1051 1052 #define OVS_METER_ATTR_MAX (__OVS_METER_ATTR_MAX - 1) 1053 1054 enum ovs_band_attr { 1055 OVS_BAND_ATTR_UNSPEC, 1056 OVS_BAND_ATTR_TYPE, /* u32 OVS_METER_BAND_TYPE_* constant. */ 1057 OVS_BAND_ATTR_RATE, /* u32 band rate in meter units (see above). */ 1058 OVS_BAND_ATTR_BURST, /* u32 burst size in meter units. */ 1059 OVS_BAND_ATTR_STATS, /* struct ovs_flow_stats for the band. */ 1060 __OVS_BAND_ATTR_MAX 1061 }; 1062 1063 #define OVS_BAND_ATTR_MAX (__OVS_BAND_ATTR_MAX - 1) 1064 1065 enum ovs_meter_band_type { 1066 OVS_METER_BAND_TYPE_UNSPEC, 1067 OVS_METER_BAND_TYPE_DROP, /* Drop exceeding packets. */ 1068 __OVS_METER_BAND_TYPE_MAX 1069 }; 1070 1071 #define OVS_METER_BAND_TYPE_MAX (__OVS_METER_BAND_TYPE_MAX - 1) 1072 1073 /* Conntrack limit */ 1074 #define OVS_CT_LIMIT_FAMILY "ovs_ct_limit" 1075 #define OVS_CT_LIMIT_MCGROUP "ovs_ct_limit" 1076 #define OVS_CT_LIMIT_VERSION 0x1 1077 1078 enum ovs_ct_limit_cmd { 1079 OVS_CT_LIMIT_CMD_UNSPEC, 1080 OVS_CT_LIMIT_CMD_SET, /* Add or modify ct limit. */ 1081 OVS_CT_LIMIT_CMD_DEL, /* Delete ct limit. */ 1082 OVS_CT_LIMIT_CMD_GET /* Get ct limit. */ 1083 }; 1084 1085 enum ovs_ct_limit_attr { 1086 OVS_CT_LIMIT_ATTR_UNSPEC, 1087 OVS_CT_LIMIT_ATTR_ZONE_LIMIT, /* Nested struct ovs_zone_limit. */ 1088 __OVS_CT_LIMIT_ATTR_MAX 1089 }; 1090 1091 #define OVS_CT_LIMIT_ATTR_MAX (__OVS_CT_LIMIT_ATTR_MAX - 1) 1092 1093 #define OVS_ZONE_LIMIT_DEFAULT_ZONE -1 1094 1095 struct ovs_zone_limit { 1096 int zone_id; 1097 __u32 limit; 1098 __u32 count; 1099 }; 1100 1101 enum ovs_dec_ttl_attr { 1102 OVS_DEC_TTL_ATTR_UNSPEC, 1103 OVS_DEC_TTL_ATTR_ACTION, /* Nested struct nlattr */ 1104 __OVS_DEC_TTL_ATTR_MAX 1105 }; 1106 1107 #define OVS_DEC_TTL_ATTR_MAX (__OVS_DEC_TTL_ATTR_MAX - 1) 1108 1109 #endif /* _LINUX_OPENVSWITCH_H */
