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_MAX 90 }; 91 92 #define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1) 93 94 struct ovs_dp_stats { 95 __u64 n_hit; /* Number of flow table matches. */ 96 __u64 n_missed; /* Number of flow table misses. */ 97 __u64 n_lost; /* Number of misses not sent to userspace. */ 98 __u64 n_flows; /* Number of flows present */ 99 }; 100 101 struct ovs_dp_megaflow_stats { 102 __u64 n_mask_hit; /* Number of masks used for flow lookups. */ 103 __u32 n_masks; /* Number of masks for the datapath. */ 104 __u32 pad0; /* Pad for future expension. */ 105 __u64 pad1; /* Pad for future expension. */ 106 __u64 pad2; /* Pad for future expension. */ 107 }; 108 109 struct ovs_vport_stats { 110 __u64 rx_packets; /* total packets received */ 111 __u64 tx_packets; /* total packets transmitted */ 112 __u64 rx_bytes; /* total bytes received */ 113 __u64 tx_bytes; /* total bytes transmitted */ 114 __u64 rx_errors; /* bad packets received */ 115 __u64 tx_errors; /* packet transmit problems */ 116 __u64 rx_dropped; /* no space in linux buffers */ 117 __u64 tx_dropped; /* no space available in linux */ 118 }; 119 120 /* Allow last Netlink attribute to be unaligned */ 121 #define OVS_DP_F_UNALIGNED (1 << 0) 122 123 /* Allow datapath to associate multiple Netlink PIDs to each vport */ 124 #define OVS_DP_F_VPORT_PIDS (1 << 1) 125 126 /* Allow tc offload recirc sharing */ 127 #define OVS_DP_F_TC_RECIRC_SHARING (1 << 2) 128 129 /* Fixed logical ports. */ 130 #define OVSP_LOCAL ((__u32)0) 131 132 /* Packet transfer. */ 133 134 #define OVS_PACKET_FAMILY "ovs_packet" 135 #define OVS_PACKET_VERSION 0x1 136 137 enum ovs_packet_cmd { 138 OVS_PACKET_CMD_UNSPEC, 139 140 /* Kernel-to-user notifications. */ 141 OVS_PACKET_CMD_MISS, /* Flow table miss. */ 142 OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */ 143 144 /* Userspace commands. */ 145 OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */ 146 }; 147 148 /** 149 * enum ovs_packet_attr - attributes for %OVS_PACKET_* commands. 150 * @OVS_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire 151 * packet as received, from the start of the Ethernet header onward. For 152 * %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by 153 * actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is 154 * the flow key extracted from the packet as originally received. 155 * @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key 156 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows 157 * userspace to adapt its flow setup strategy by comparing its notion of the 158 * flow key against the kernel's. 159 * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used 160 * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes. 161 * Also used in upcall when %OVS_ACTION_ATTR_USERSPACE has optional 162 * %OVS_USERSPACE_ATTR_ACTIONS attribute. 163 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION 164 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an 165 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content 166 * specified there. 167 * @OVS_PACKET_ATTR_EGRESS_TUN_KEY: Present for an %OVS_PACKET_CMD_ACTION 168 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an 169 * %OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute, which is sent only if the 170 * output port is actually a tunnel port. Contains the output tunnel key 171 * extracted from the packet as nested %OVS_TUNNEL_KEY_ATTR_* attributes. 172 * @OVS_PACKET_ATTR_MRU: Present for an %OVS_PACKET_CMD_ACTION and 173 * @OVS_PACKET_ATTR_LEN: Packet size before truncation. 174 * %OVS_PACKET_ATTR_USERSPACE action specify the Maximum received fragment 175 * size. 176 * @OVS_PACKET_ATTR_HASH: Packet hash info (e.g. hash, sw_hash and l4_hash in skb). 177 * 178 * These attributes follow the &struct ovs_header within the Generic Netlink 179 * payload for %OVS_PACKET_* commands. 180 */ 181 enum ovs_packet_attr { 182 OVS_PACKET_ATTR_UNSPEC, 183 OVS_PACKET_ATTR_PACKET, /* Packet data. */ 184 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */ 185 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 186 OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */ 187 OVS_PACKET_ATTR_EGRESS_TUN_KEY, /* Nested OVS_TUNNEL_KEY_ATTR_* 188 attributes. */ 189 OVS_PACKET_ATTR_UNUSED1, 190 OVS_PACKET_ATTR_UNUSED2, 191 OVS_PACKET_ATTR_PROBE, /* Packet operation is a feature probe, 192 error logging should be suppressed. */ 193 OVS_PACKET_ATTR_MRU, /* Maximum received IP fragment size. */ 194 OVS_PACKET_ATTR_LEN, /* Packet size before truncation. */ 195 OVS_PACKET_ATTR_HASH, /* Packet hash. */ 196 __OVS_PACKET_ATTR_MAX 197 }; 198 199 #define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1) 200 201 /* Virtual ports. */ 202 203 #define OVS_VPORT_FAMILY "ovs_vport" 204 #define OVS_VPORT_MCGROUP "ovs_vport" 205 #define OVS_VPORT_VERSION 0x1 206 207 enum ovs_vport_cmd { 208 OVS_VPORT_CMD_UNSPEC, 209 OVS_VPORT_CMD_NEW, 210 OVS_VPORT_CMD_DEL, 211 OVS_VPORT_CMD_GET, 212 OVS_VPORT_CMD_SET 213 }; 214 215 enum ovs_vport_type { 216 OVS_VPORT_TYPE_UNSPEC, 217 OVS_VPORT_TYPE_NETDEV, /* network device */ 218 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */ 219 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */ 220 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */ 221 OVS_VPORT_TYPE_GENEVE, /* Geneve tunnel. */ 222 __OVS_VPORT_TYPE_MAX 223 }; 224 225 #define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1) 226 227 /** 228 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands. 229 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath. 230 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type 231 * of vport. 232 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device 233 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes 234 * plus a null terminator. 235 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information. 236 * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace 237 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets 238 * received on this port. If this is a single-element array of value 0, 239 * upcalls should not be sent. 240 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for 241 * packets sent or received through the vport. 242 * 243 * These attributes follow the &struct ovs_header within the Generic Netlink 244 * payload for %OVS_VPORT_* commands. 245 * 246 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and 247 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is 248 * optional; if not specified a free port number is automatically selected. 249 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type 250 * of vport. 251 * 252 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to 253 * look up the vport to operate on; otherwise dp_idx from the &struct 254 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport. 255 */ 256 enum ovs_vport_attr { 257 OVS_VPORT_ATTR_UNSPEC, 258 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */ 259 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */ 260 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */ 261 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */ 262 OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */ 263 /* receiving upcalls */ 264 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */ 265 OVS_VPORT_ATTR_PAD, 266 OVS_VPORT_ATTR_IFINDEX, 267 OVS_VPORT_ATTR_NETNSID, 268 __OVS_VPORT_ATTR_MAX 269 }; 270 271 #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1) 272 273 enum { 274 OVS_VXLAN_EXT_UNSPEC, 275 OVS_VXLAN_EXT_GBP, /* Flag or __u32 */ 276 __OVS_VXLAN_EXT_MAX, 277 }; 278 279 #define OVS_VXLAN_EXT_MAX (__OVS_VXLAN_EXT_MAX - 1) 280 281 282 /* OVS_VPORT_ATTR_OPTIONS attributes for tunnels. 283 */ 284 enum { 285 OVS_TUNNEL_ATTR_UNSPEC, 286 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */ 287 OVS_TUNNEL_ATTR_EXTENSION, 288 __OVS_TUNNEL_ATTR_MAX 289 }; 290 291 #define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1) 292 293 /* Flows. */ 294 295 #define OVS_FLOW_FAMILY "ovs_flow" 296 #define OVS_FLOW_MCGROUP "ovs_flow" 297 #define OVS_FLOW_VERSION 0x1 298 299 enum ovs_flow_cmd { 300 OVS_FLOW_CMD_UNSPEC, 301 OVS_FLOW_CMD_NEW, 302 OVS_FLOW_CMD_DEL, 303 OVS_FLOW_CMD_GET, 304 OVS_FLOW_CMD_SET 305 }; 306 307 struct ovs_flow_stats { 308 __u64 n_packets; /* Number of matched packets. */ 309 __u64 n_bytes; /* Number of matched bytes. */ 310 }; 311 312 enum ovs_key_attr { 313 OVS_KEY_ATTR_UNSPEC, 314 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */ 315 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */ 316 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */ 317 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */ 318 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */ 319 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */ 320 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */ 321 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */ 322 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */ 323 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */ 324 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */ 325 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */ 326 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */ 327 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */ 328 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */ 329 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */ 330 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */ 331 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */ 332 OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash 333 is not computed by the datapath. */ 334 OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */ 335 OVS_KEY_ATTR_MPLS, /* array of struct ovs_key_mpls. 336 * The implementation may restrict 337 * the accepted length of the array. */ 338 OVS_KEY_ATTR_CT_STATE, /* u32 bitmask of OVS_CS_F_* */ 339 OVS_KEY_ATTR_CT_ZONE, /* u16 connection tracking zone. */ 340 OVS_KEY_ATTR_CT_MARK, /* u32 connection tracking mark */ 341 OVS_KEY_ATTR_CT_LABELS, /* 16-octet connection tracking label */ 342 OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4, /* struct ovs_key_ct_tuple_ipv4 */ 343 OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6, /* struct ovs_key_ct_tuple_ipv6 */ 344 OVS_KEY_ATTR_NSH, /* Nested set of ovs_nsh_key_* */ 345 346 #ifdef __KERNEL__ 347 OVS_KEY_ATTR_TUNNEL_INFO, /* struct ip_tunnel_info */ 348 #endif 349 __OVS_KEY_ATTR_MAX 350 }; 351 352 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1) 353 354 enum ovs_tunnel_key_attr { 355 /* OVS_TUNNEL_KEY_ATTR_NONE, standard nl API requires this attribute! */ 356 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */ 357 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */ 358 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */ 359 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */ 360 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */ 361 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */ 362 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */ 363 OVS_TUNNEL_KEY_ATTR_OAM, /* No argument. OAM frame. */ 364 OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, /* Array of Geneve options. */ 365 OVS_TUNNEL_KEY_ATTR_TP_SRC, /* be16 src Transport Port. */ 366 OVS_TUNNEL_KEY_ATTR_TP_DST, /* be16 dst Transport Port. */ 367 OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS, /* Nested OVS_VXLAN_EXT_* */ 368 OVS_TUNNEL_KEY_ATTR_IPV6_SRC, /* struct in6_addr src IPv6 address. */ 369 OVS_TUNNEL_KEY_ATTR_IPV6_DST, /* struct in6_addr dst IPv6 address. */ 370 OVS_TUNNEL_KEY_ATTR_PAD, 371 OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS, /* struct erspan_metadata */ 372 OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE, /* No argument. IPV4_INFO_BRIDGE mode.*/ 373 __OVS_TUNNEL_KEY_ATTR_MAX 374 }; 375 376 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1) 377 378 /** 379 * enum ovs_frag_type - IPv4 and IPv6 fragment type 380 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment. 381 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0. 382 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset. 383 * 384 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct 385 * ovs_key_ipv6. 386 */ 387 enum ovs_frag_type { 388 OVS_FRAG_TYPE_NONE, 389 OVS_FRAG_TYPE_FIRST, 390 OVS_FRAG_TYPE_LATER, 391 __OVS_FRAG_TYPE_MAX 392 }; 393 394 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1) 395 396 struct ovs_key_ethernet { 397 __u8 eth_src[ETH_ALEN]; 398 __u8 eth_dst[ETH_ALEN]; 399 }; 400 401 struct ovs_key_mpls { 402 __be32 mpls_lse; 403 }; 404 405 struct ovs_key_ipv4 { 406 __be32 ipv4_src; 407 __be32 ipv4_dst; 408 __u8 ipv4_proto; 409 __u8 ipv4_tos; 410 __u8 ipv4_ttl; 411 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */ 412 }; 413 414 struct ovs_key_ipv6 { 415 __be32 ipv6_src[4]; 416 __be32 ipv6_dst[4]; 417 __be32 ipv6_label; /* 20-bits in least-significant bits. */ 418 __u8 ipv6_proto; 419 __u8 ipv6_tclass; 420 __u8 ipv6_hlimit; 421 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */ 422 }; 423 424 struct ovs_key_tcp { 425 __be16 tcp_src; 426 __be16 tcp_dst; 427 }; 428 429 struct ovs_key_udp { 430 __be16 udp_src; 431 __be16 udp_dst; 432 }; 433 434 struct ovs_key_sctp { 435 __be16 sctp_src; 436 __be16 sctp_dst; 437 }; 438 439 struct ovs_key_icmp { 440 __u8 icmp_type; 441 __u8 icmp_code; 442 }; 443 444 struct ovs_key_icmpv6 { 445 __u8 icmpv6_type; 446 __u8 icmpv6_code; 447 }; 448 449 struct ovs_key_arp { 450 __be32 arp_sip; 451 __be32 arp_tip; 452 __be16 arp_op; 453 __u8 arp_sha[ETH_ALEN]; 454 __u8 arp_tha[ETH_ALEN]; 455 }; 456 457 struct ovs_key_nd { 458 __be32 nd_target[4]; 459 __u8 nd_sll[ETH_ALEN]; 460 __u8 nd_tll[ETH_ALEN]; 461 }; 462 463 #define OVS_CT_LABELS_LEN_32 4 464 #define OVS_CT_LABELS_LEN (OVS_CT_LABELS_LEN_32 * sizeof(__u32)) 465 struct ovs_key_ct_labels { 466 union { 467 __u8 ct_labels[OVS_CT_LABELS_LEN]; 468 __u32 ct_labels_32[OVS_CT_LABELS_LEN_32]; 469 }; 470 }; 471 472 /* OVS_KEY_ATTR_CT_STATE flags */ 473 #define OVS_CS_F_NEW 0x01 /* Beginning of a new connection. */ 474 #define OVS_CS_F_ESTABLISHED 0x02 /* Part of an existing connection. */ 475 #define OVS_CS_F_RELATED 0x04 /* Related to an established 476 * connection. */ 477 #define OVS_CS_F_REPLY_DIR 0x08 /* Flow is in the reply direction. */ 478 #define OVS_CS_F_INVALID 0x10 /* Could not track connection. */ 479 #define OVS_CS_F_TRACKED 0x20 /* Conntrack has occurred. */ 480 #define OVS_CS_F_SRC_NAT 0x40 /* Packet's source address/port was 481 * mangled by NAT. 482 */ 483 #define OVS_CS_F_DST_NAT 0x80 /* Packet's destination address/port 484 * was mangled by NAT. 485 */ 486 487 #define OVS_CS_F_NAT_MASK (OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT) 488 489 struct ovs_key_ct_tuple_ipv4 { 490 __be32 ipv4_src; 491 __be32 ipv4_dst; 492 __be16 src_port; 493 __be16 dst_port; 494 __u8 ipv4_proto; 495 }; 496 497 struct ovs_key_ct_tuple_ipv6 { 498 __be32 ipv6_src[4]; 499 __be32 ipv6_dst[4]; 500 __be16 src_port; 501 __be16 dst_port; 502 __u8 ipv6_proto; 503 }; 504 505 enum ovs_nsh_key_attr { 506 OVS_NSH_KEY_ATTR_UNSPEC, 507 OVS_NSH_KEY_ATTR_BASE, /* struct ovs_nsh_key_base. */ 508 OVS_NSH_KEY_ATTR_MD1, /* struct ovs_nsh_key_md1. */ 509 OVS_NSH_KEY_ATTR_MD2, /* variable-length octets for MD type 2. */ 510 __OVS_NSH_KEY_ATTR_MAX 511 }; 512 513 #define OVS_NSH_KEY_ATTR_MAX (__OVS_NSH_KEY_ATTR_MAX - 1) 514 515 struct ovs_nsh_key_base { 516 __u8 flags; 517 __u8 ttl; 518 __u8 mdtype; 519 __u8 np; 520 __be32 path_hdr; 521 }; 522 523 #define NSH_MD1_CONTEXT_SIZE 4 524 525 struct ovs_nsh_key_md1 { 526 __be32 context[NSH_MD1_CONTEXT_SIZE]; 527 }; 528 529 /** 530 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands. 531 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow 532 * key. Always present in notifications. Required for all requests (except 533 * dumps). 534 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying 535 * the actions to take for packets that match the key. Always present in 536 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for 537 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without 538 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions, 539 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given. 540 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this 541 * flow. Present in notifications if the stats would be nonzero. Ignored in 542 * requests. 543 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the 544 * TCP flags seen on packets in this flow. Only present in notifications for 545 * TCP flows, and only if it would be nonzero. Ignored in requests. 546 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on 547 * the system monotonic clock, at which a packet was last processed for this 548 * flow. Only present in notifications if a packet has been processed for this 549 * flow. Ignored in requests. 550 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the 551 * last-used time, accumulated TCP flags, and statistics for this flow. 552 * Otherwise ignored in requests. Never present in notifications. 553 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the 554 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact 555 * match with corresponding flow key bit, while mask bit value '0' specifies 556 * a wildcarded match. Omitting attribute is treated as wildcarding all 557 * corresponding fields. Optional for all requests. If not present, 558 * all flow key bits are exact match bits. 559 * @OVS_FLOW_ATTR_UFID: A value between 1-16 octets specifying a unique 560 * identifier for the flow. Causes the flow to be indexed by this value rather 561 * than the value of the %OVS_FLOW_ATTR_KEY attribute. Optional for all 562 * requests. Present in notifications if the flow was created with this 563 * attribute. 564 * @OVS_FLOW_ATTR_UFID_FLAGS: A 32-bit value of OR'd %OVS_UFID_F_* 565 * flags that provide alternative semantics for flow installation and 566 * retrieval. Optional for all requests. 567 * 568 * These attributes follow the &struct ovs_header within the Generic Netlink 569 * payload for %OVS_FLOW_* commands. 570 */ 571 enum ovs_flow_attr { 572 OVS_FLOW_ATTR_UNSPEC, 573 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */ 574 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 575 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */ 576 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */ 577 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */ 578 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */ 579 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */ 580 OVS_FLOW_ATTR_PROBE, /* Flow operation is a feature probe, error 581 * logging should be suppressed. */ 582 OVS_FLOW_ATTR_UFID, /* Variable length unique flow identifier. */ 583 OVS_FLOW_ATTR_UFID_FLAGS,/* u32 of OVS_UFID_F_*. */ 584 OVS_FLOW_ATTR_PAD, 585 __OVS_FLOW_ATTR_MAX 586 }; 587 588 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1) 589 590 /** 591 * Omit attributes for notifications. 592 * 593 * If a datapath request contains an %OVS_UFID_F_OMIT_* flag, then the datapath 594 * may omit the corresponding %OVS_FLOW_ATTR_* from the response. 595 */ 596 #define OVS_UFID_F_OMIT_KEY (1 << 0) 597 #define OVS_UFID_F_OMIT_MASK (1 << 1) 598 #define OVS_UFID_F_OMIT_ACTIONS (1 << 2) 599 600 /** 601 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action. 602 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with 603 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of 604 * %UINT32_MAX samples all packets and intermediate values sample intermediate 605 * fractions of packets. 606 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event. 607 * Actions are passed as nested attributes. 608 * 609 * Executes the specified actions with the given probability on a per-packet 610 * basis. 611 */ 612 enum ovs_sample_attr { 613 OVS_SAMPLE_ATTR_UNSPEC, 614 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */ 615 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */ 616 __OVS_SAMPLE_ATTR_MAX, 617 618 #ifdef __KERNEL__ 619 OVS_SAMPLE_ATTR_ARG /* struct sample_arg */ 620 #endif 621 }; 622 623 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1) 624 625 #ifdef __KERNEL__ 626 struct sample_arg { 627 bool exec; /* When true, actions in sample will not 628 * change flow keys. False otherwise. 629 */ 630 u32 probability; /* Same value as 631 * 'OVS_SAMPLE_ATTR_PROBABILITY'. 632 */ 633 }; 634 #endif 635 636 /** 637 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action. 638 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION 639 * message should be sent. Required. 640 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is 641 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA. 642 * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get 643 * tunnel info. 644 * @OVS_USERSPACE_ATTR_ACTIONS: If present, send actions with upcall. 645 */ 646 enum ovs_userspace_attr { 647 OVS_USERSPACE_ATTR_UNSPEC, 648 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */ 649 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */ 650 OVS_USERSPACE_ATTR_EGRESS_TUN_PORT, /* Optional, u32 output port 651 * to get tunnel info. */ 652 OVS_USERSPACE_ATTR_ACTIONS, /* Optional flag to get actions. */ 653 __OVS_USERSPACE_ATTR_MAX 654 }; 655 656 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1) 657 658 struct ovs_action_trunc { 659 __u32 max_len; /* Max packet size in bytes. */ 660 }; 661 662 /** 663 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument. 664 * @mpls_lse: MPLS label stack entry to push. 665 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame. 666 * 667 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and 668 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected. 669 */ 670 struct ovs_action_push_mpls { 671 __be32 mpls_lse; 672 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */ 673 }; 674 675 /** 676 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument. 677 * @vlan_tpid: Tag protocol identifier (TPID) to push. 678 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set 679 * (but it will not be set in the 802.1Q header that is pushed). 680 * 681 * The @vlan_tpid value is typically %ETH_P_8021Q or %ETH_P_8021AD. 682 * The only acceptable TPID values are those that the kernel module also parses 683 * as 802.1Q or 802.1AD headers, to prevent %OVS_ACTION_ATTR_PUSH_VLAN followed 684 * by %OVS_ACTION_ATTR_POP_VLAN from having surprising results. 685 */ 686 struct ovs_action_push_vlan { 687 __be16 vlan_tpid; /* 802.1Q or 802.1ad TPID. */ 688 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */ 689 }; 690 691 /* Data path hash algorithm for computing Datapath hash. 692 * 693 * The algorithm type only specifies the fields in a flow 694 * will be used as part of the hash. Each datapath is free 695 * to use its own hash algorithm. The hash value will be 696 * opaque to the user space daemon. 697 */ 698 enum ovs_hash_alg { 699 OVS_HASH_ALG_L4, 700 }; 701 702 /* 703 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument. 704 * @hash_alg: Algorithm used to compute hash prior to recirculation. 705 * @hash_basis: basis used for computing hash. 706 */ 707 struct ovs_action_hash { 708 __u32 hash_alg; /* One of ovs_hash_alg. */ 709 __u32 hash_basis; 710 }; 711 712 /** 713 * enum ovs_ct_attr - Attributes for %OVS_ACTION_ATTR_CT action. 714 * @OVS_CT_ATTR_COMMIT: If present, commits the connection to the conntrack 715 * table. This allows future packets for the same connection to be identified 716 * as 'established' or 'related'. The flow key for the current packet will 717 * retain the pre-commit connection state. 718 * @OVS_CT_ATTR_ZONE: u16 connection tracking zone. 719 * @OVS_CT_ATTR_MARK: u32 value followed by u32 mask. For each bit set in the 720 * mask, the corresponding bit in the value is copied to the connection 721 * tracking mark field in the connection. 722 * @OVS_CT_ATTR_LABELS: %OVS_CT_LABELS_LEN value followed by %OVS_CT_LABELS_LEN 723 * mask. For each bit set in the mask, the corresponding bit in the value is 724 * copied to the connection tracking label field in the connection. 725 * @OVS_CT_ATTR_HELPER: variable length string defining conntrack ALG. 726 * @OVS_CT_ATTR_NAT: Nested OVS_NAT_ATTR_* for performing L3 network address 727 * translation (NAT) on the packet. 728 * @OVS_CT_ATTR_FORCE_COMMIT: Like %OVS_CT_ATTR_COMMIT, but instead of doing 729 * nothing if the connection is already committed will check that the current 730 * packet is in conntrack entry's original direction. If directionality does 731 * not match, will delete the existing conntrack entry and commit a new one. 732 * @OVS_CT_ATTR_EVENTMASK: Mask of bits indicating which conntrack event types 733 * (enum ip_conntrack_events IPCT_*) should be reported. For any bit set to 734 * zero, the corresponding event type is not generated. Default behavior 735 * depends on system configuration, but typically all event types are 736 * generated, hence listening on NFNLGRP_CONNTRACK_UPDATE events may get a lot 737 * of events. Explicitly passing this attribute allows limiting the updates 738 * received to the events of interest. The bit 1 << IPCT_NEW, 1 << 739 * IPCT_RELATED, and 1 << IPCT_DESTROY must be set to ones for those events to 740 * be received on NFNLGRP_CONNTRACK_NEW and NFNLGRP_CONNTRACK_DESTROY groups, 741 * respectively. Remaining bits control the changes for which an event is 742 * delivered on the NFNLGRP_CONNTRACK_UPDATE group. 743 * @OVS_CT_ATTR_TIMEOUT: Variable length string defining conntrack timeout. 744 */ 745 enum ovs_ct_attr { 746 OVS_CT_ATTR_UNSPEC, 747 OVS_CT_ATTR_COMMIT, /* No argument, commits connection. */ 748 OVS_CT_ATTR_ZONE, /* u16 zone id. */ 749 OVS_CT_ATTR_MARK, /* mark to associate with this connection. */ 750 OVS_CT_ATTR_LABELS, /* labels to associate with this connection. */ 751 OVS_CT_ATTR_HELPER, /* netlink helper to assist detection of 752 related connections. */ 753 OVS_CT_ATTR_NAT, /* Nested OVS_NAT_ATTR_* */ 754 OVS_CT_ATTR_FORCE_COMMIT, /* No argument */ 755 OVS_CT_ATTR_EVENTMASK, /* u32 mask of IPCT_* events. */ 756 OVS_CT_ATTR_TIMEOUT, /* Associate timeout with this connection for 757 * fine-grain timeout tuning. */ 758 __OVS_CT_ATTR_MAX 759 }; 760 761 #define OVS_CT_ATTR_MAX (__OVS_CT_ATTR_MAX - 1) 762 763 /** 764 * enum ovs_nat_attr - Attributes for %OVS_CT_ATTR_NAT. 765 * 766 * @OVS_NAT_ATTR_SRC: Flag for Source NAT (mangle source address/port). 767 * @OVS_NAT_ATTR_DST: Flag for Destination NAT (mangle destination 768 * address/port). Only one of (@OVS_NAT_ATTR_SRC, @OVS_NAT_ATTR_DST) may be 769 * specified. Effective only for packets for ct_state NEW connections. 770 * Packets of committed connections are mangled by the NAT action according to 771 * the committed NAT type regardless of the flags specified. As a corollary, a 772 * NAT action without a NAT type flag will only mangle packets of committed 773 * connections. The following NAT attributes only apply for NEW 774 * (non-committed) connections, and they may be included only when the CT 775 * action has the @OVS_CT_ATTR_COMMIT flag and either @OVS_NAT_ATTR_SRC or 776 * @OVS_NAT_ATTR_DST is also included. 777 * @OVS_NAT_ATTR_IP_MIN: struct in_addr or struct in6_addr 778 * @OVS_NAT_ATTR_IP_MAX: struct in_addr or struct in6_addr 779 * @OVS_NAT_ATTR_PROTO_MIN: u16 L4 protocol specific lower boundary (port) 780 * @OVS_NAT_ATTR_PROTO_MAX: u16 L4 protocol specific upper boundary (port) 781 * @OVS_NAT_ATTR_PERSISTENT: Flag for persistent IP mapping across reboots 782 * @OVS_NAT_ATTR_PROTO_HASH: Flag for pseudo random L4 port mapping (MD5) 783 * @OVS_NAT_ATTR_PROTO_RANDOM: Flag for fully randomized L4 port mapping 784 */ 785 enum ovs_nat_attr { 786 OVS_NAT_ATTR_UNSPEC, 787 OVS_NAT_ATTR_SRC, 788 OVS_NAT_ATTR_DST, 789 OVS_NAT_ATTR_IP_MIN, 790 OVS_NAT_ATTR_IP_MAX, 791 OVS_NAT_ATTR_PROTO_MIN, 792 OVS_NAT_ATTR_PROTO_MAX, 793 OVS_NAT_ATTR_PERSISTENT, 794 OVS_NAT_ATTR_PROTO_HASH, 795 OVS_NAT_ATTR_PROTO_RANDOM, 796 __OVS_NAT_ATTR_MAX, 797 }; 798 799 #define OVS_NAT_ATTR_MAX (__OVS_NAT_ATTR_MAX - 1) 800 801 /* 802 * struct ovs_action_push_eth - %OVS_ACTION_ATTR_PUSH_ETH action argument. 803 * @addresses: Source and destination MAC addresses. 804 * @eth_type: Ethernet type 805 */ 806 struct ovs_action_push_eth { 807 struct ovs_key_ethernet addresses; 808 }; 809 810 /* 811 * enum ovs_check_pkt_len_attr - Attributes for %OVS_ACTION_ATTR_CHECK_PKT_LEN. 812 * 813 * @OVS_CHECK_PKT_LEN_ATTR_PKT_LEN: u16 Packet length to check for. 814 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER: Nested OVS_ACTION_ATTR_* 815 * actions to apply if the packer length is greater than the specified 816 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN. 817 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL - Nested OVS_ACTION_ATTR_* 818 * actions to apply if the packer length is lesser or equal to the specified 819 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN. 820 */ 821 enum ovs_check_pkt_len_attr { 822 OVS_CHECK_PKT_LEN_ATTR_UNSPEC, 823 OVS_CHECK_PKT_LEN_ATTR_PKT_LEN, 824 OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER, 825 OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL, 826 __OVS_CHECK_PKT_LEN_ATTR_MAX, 827 828 #ifdef __KERNEL__ 829 OVS_CHECK_PKT_LEN_ATTR_ARG /* struct check_pkt_len_arg */ 830 #endif 831 }; 832 833 #define OVS_CHECK_PKT_LEN_ATTR_MAX (__OVS_CHECK_PKT_LEN_ATTR_MAX - 1) 834 835 #ifdef __KERNEL__ 836 struct check_pkt_len_arg { 837 u16 pkt_len; /* Same value as OVS_CHECK_PKT_LEN_ATTR_PKT_LEN'. */ 838 bool exec_for_greater; /* When true, actions in IF_GREATER will 839 * not change flow keys. False otherwise. 840 */ 841 bool exec_for_lesser_equal; /* When true, actions in IF_LESS_EQUAL 842 * will not change flow keys. False 843 * otherwise. 844 */ 845 }; 846 #endif 847 848 /** 849 * enum ovs_action_attr - Action types. 850 * 851 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port. 852 * @OVS_ACTION_ATTR_TRUNC: Output packet to port with truncated packet size. 853 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested 854 * %OVS_USERSPACE_ATTR_* attributes. 855 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The 856 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its 857 * value. 858 * @OVS_ACTION_ATTR_SET_MASKED: Replaces the contents of an existing header. A 859 * nested %OVS_KEY_ATTR_* attribute specifies a header to modify, its value, 860 * and a mask. For every bit set in the mask, the corresponding bit value 861 * is copied from the value to the packet header field, rest of the bits are 862 * left unchanged. The non-masked value bits must be passed in as zeroes. 863 * Masking is not supported for the %OVS_KEY_ATTR_TUNNEL attribute. 864 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q or 802.1ad header 865 * onto the packet. 866 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q or 802.1ad header 867 * from the packet. 868 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in 869 * the nested %OVS_SAMPLE_ATTR_* attributes. 870 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the 871 * top of the packets MPLS label stack. Set the ethertype of the 872 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to 873 * indicate the new packet contents. 874 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the 875 * packet's MPLS label stack. Set the encapsulating frame's ethertype to 876 * indicate the new packet contents. This could potentially still be 877 * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there 878 * is no MPLS label stack, as determined by ethertype, no action is taken. 879 * @OVS_ACTION_ATTR_CT: Track the connection. Populate the conntrack-related 880 * entries in the flow key. 881 * @OVS_ACTION_ATTR_PUSH_ETH: Push a new outermost Ethernet header onto the 882 * packet. 883 * @OVS_ACTION_ATTR_POP_ETH: Pop the outermost Ethernet header off the 884 * packet. 885 * @OVS_ACTION_ATTR_CT_CLEAR: Clear conntrack state from the packet. 886 * @OVS_ACTION_ATTR_PUSH_NSH: push NSH header to the packet. 887 * @OVS_ACTION_ATTR_POP_NSH: pop the outermost NSH header off the packet. 888 * @OVS_ACTION_ATTR_METER: Run packet through a meter, which may drop the 889 * packet, or modify the packet (e.g., change the DSCP field). 890 * @OVS_ACTION_ATTR_CLONE: make a copy of the packet and execute a list of 891 * actions without affecting the original packet and key. 892 * @OVS_ACTION_ATTR_CHECK_PKT_LEN: Check the packet length and execute a set 893 * of actions if greater than the specified packet length, else execute 894 * another set of actions. 895 * 896 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all 897 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment 898 * type may not be changed. 899 * 900 * @OVS_ACTION_ATTR_SET_TO_MASKED: Kernel internal masked set action translated 901 * from the @OVS_ACTION_ATTR_SET. 902 */ 903 904 enum ovs_action_attr { 905 OVS_ACTION_ATTR_UNSPEC, 906 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */ 907 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */ 908 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */ 909 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */ 910 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */ 911 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */ 912 OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */ 913 OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */ 914 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */ 915 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */ 916 OVS_ACTION_ATTR_SET_MASKED, /* One nested OVS_KEY_ATTR_* including 917 * data immediately followed by a mask. 918 * The data must be zero for the unmasked 919 * bits. */ 920 OVS_ACTION_ATTR_CT, /* Nested OVS_CT_ATTR_* . */ 921 OVS_ACTION_ATTR_TRUNC, /* u32 struct ovs_action_trunc. */ 922 OVS_ACTION_ATTR_PUSH_ETH, /* struct ovs_action_push_eth. */ 923 OVS_ACTION_ATTR_POP_ETH, /* No argument. */ 924 OVS_ACTION_ATTR_CT_CLEAR, /* No argument. */ 925 OVS_ACTION_ATTR_PUSH_NSH, /* Nested OVS_NSH_KEY_ATTR_*. */ 926 OVS_ACTION_ATTR_POP_NSH, /* No argument. */ 927 OVS_ACTION_ATTR_METER, /* u32 meter ID. */ 928 OVS_ACTION_ATTR_CLONE, /* Nested OVS_CLONE_ATTR_*. */ 929 OVS_ACTION_ATTR_CHECK_PKT_LEN, /* Nested OVS_CHECK_PKT_LEN_ATTR_*. */ 930 931 __OVS_ACTION_ATTR_MAX, /* Nothing past this will be accepted 932 * from userspace. */ 933 934 #ifdef __KERNEL__ 935 OVS_ACTION_ATTR_SET_TO_MASKED, /* Kernel module internal masked 936 * set action converted from 937 * OVS_ACTION_ATTR_SET. */ 938 #endif 939 }; 940 941 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1) 942 943 /* Meters. */ 944 #define OVS_METER_FAMILY "ovs_meter" 945 #define OVS_METER_MCGROUP "ovs_meter" 946 #define OVS_METER_VERSION 0x1 947 948 enum ovs_meter_cmd { 949 OVS_METER_CMD_UNSPEC, 950 OVS_METER_CMD_FEATURES, /* Get features supported by the datapath. */ 951 OVS_METER_CMD_SET, /* Add or modify a meter. */ 952 OVS_METER_CMD_DEL, /* Delete a meter. */ 953 OVS_METER_CMD_GET /* Get meter stats. */ 954 }; 955 956 enum ovs_meter_attr { 957 OVS_METER_ATTR_UNSPEC, 958 OVS_METER_ATTR_ID, /* u32 meter ID within datapath. */ 959 OVS_METER_ATTR_KBPS, /* No argument. If set, units in kilobits 960 * per second. Otherwise, units in 961 * packets per second. 962 */ 963 OVS_METER_ATTR_STATS, /* struct ovs_flow_stats for the meter. */ 964 OVS_METER_ATTR_BANDS, /* Nested attributes for meter bands. */ 965 OVS_METER_ATTR_USED, /* u64 msecs last used in monotonic time. */ 966 OVS_METER_ATTR_CLEAR, /* Flag to clear stats, used. */ 967 OVS_METER_ATTR_MAX_METERS, /* u32 number of meters supported. */ 968 OVS_METER_ATTR_MAX_BANDS, /* u32 max number of bands per meter. */ 969 OVS_METER_ATTR_PAD, 970 __OVS_METER_ATTR_MAX 971 }; 972 973 #define OVS_METER_ATTR_MAX (__OVS_METER_ATTR_MAX - 1) 974 975 enum ovs_band_attr { 976 OVS_BAND_ATTR_UNSPEC, 977 OVS_BAND_ATTR_TYPE, /* u32 OVS_METER_BAND_TYPE_* constant. */ 978 OVS_BAND_ATTR_RATE, /* u32 band rate in meter units (see above). */ 979 OVS_BAND_ATTR_BURST, /* u32 burst size in meter units. */ 980 OVS_BAND_ATTR_STATS, /* struct ovs_flow_stats for the band. */ 981 __OVS_BAND_ATTR_MAX 982 }; 983 984 #define OVS_BAND_ATTR_MAX (__OVS_BAND_ATTR_MAX - 1) 985 986 enum ovs_meter_band_type { 987 OVS_METER_BAND_TYPE_UNSPEC, 988 OVS_METER_BAND_TYPE_DROP, /* Drop exceeding packets. */ 989 __OVS_METER_BAND_TYPE_MAX 990 }; 991 992 #define OVS_METER_BAND_TYPE_MAX (__OVS_METER_BAND_TYPE_MAX - 1) 993 994 /* Conntrack limit */ 995 #define OVS_CT_LIMIT_FAMILY "ovs_ct_limit" 996 #define OVS_CT_LIMIT_MCGROUP "ovs_ct_limit" 997 #define OVS_CT_LIMIT_VERSION 0x1 998 999 enum ovs_ct_limit_cmd { 1000 OVS_CT_LIMIT_CMD_UNSPEC, 1001 OVS_CT_LIMIT_CMD_SET, /* Add or modify ct limit. */ 1002 OVS_CT_LIMIT_CMD_DEL, /* Delete ct limit. */ 1003 OVS_CT_LIMIT_CMD_GET /* Get ct limit. */ 1004 }; 1005 1006 enum ovs_ct_limit_attr { 1007 OVS_CT_LIMIT_ATTR_UNSPEC, 1008 OVS_CT_LIMIT_ATTR_ZONE_LIMIT, /* Nested struct ovs_zone_limit. */ 1009 __OVS_CT_LIMIT_ATTR_MAX 1010 }; 1011 1012 #define OVS_CT_LIMIT_ATTR_MAX (__OVS_CT_LIMIT_ATTR_MAX - 1) 1013 1014 #define OVS_ZONE_LIMIT_DEFAULT_ZONE -1 1015 1016 struct ovs_zone_limit { 1017 int zone_id; 1018 __u32 limit; 1019 __u32 count; 1020 }; 1021 1022 #endif /* _LINUX_OPENVSWITCH_H */ 1023