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 36struct 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 54enum 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 */ 81enum 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 94struct 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 101struct 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 109struct 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 137enum 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 */ 181enum 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 207enum 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 215enum 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 */ 256enum 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 273enum { 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 */ 284enum { 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 299enum 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 307struct ovs_flow_stats { 308 __u64 n_packets; /* Number of matched packets. */ 309 __u64 n_bytes; /* Number of matched bytes. */ 310}; 311 312enum 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 354enum 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 */ 387enum 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 396struct ovs_key_ethernet { 397 __u8 eth_src[ETH_ALEN]; 398 __u8 eth_dst[ETH_ALEN]; 399}; 400 401struct ovs_key_mpls { 402 __be32 mpls_lse; 403}; 404 405struct 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 414struct 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 424struct ovs_key_tcp { 425 __be16 tcp_src; 426 __be16 tcp_dst; 427}; 428 429struct ovs_key_udp { 430 __be16 udp_src; 431 __be16 udp_dst; 432}; 433 434struct ovs_key_sctp { 435 __be16 sctp_src; 436 __be16 sctp_dst; 437}; 438 439struct ovs_key_icmp { 440 __u8 icmp_type; 441 __u8 icmp_code; 442}; 443 444struct ovs_key_icmpv6 { 445 __u8 icmpv6_type; 446 __u8 icmpv6_code; 447}; 448 449struct 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 457struct 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)) 465struct 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 489struct 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 497struct 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 505enum 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 515struct 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 525struct 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 */ 571enum 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 */ 612enum 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__ 626struct 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 */ 646enum 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 658struct 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 */ 670struct 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_add_mpls - %OVS_ACTION_ATTR_ADD_MPLS action 677 * argument. 678 * @mpls_lse: MPLS label stack entry to push. 679 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame. 680 * @tun_flags: MPLS tunnel attributes. 681 * 682 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and 683 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected. 684 */ 685struct ovs_action_add_mpls { 686 __be32 mpls_lse; 687 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */ 688 __u16 tun_flags; 689}; 690 691#define OVS_MPLS_L3_TUNNEL_FLAG_MASK (1 << 0) /* Flag to specify the place of 692 * insertion of MPLS header. 693 * When false, the MPLS header 694 * will be inserted at the start 695 * of the packet. 696 * When true, the MPLS header 697 * will be inserted at the start 698 * of the l3 header. 699 */ 700 701/** 702 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument. 703 * @vlan_tpid: Tag protocol identifier (TPID) to push. 704 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set 705 * (but it will not be set in the 802.1Q header that is pushed). 706 * 707 * The @vlan_tpid value is typically %ETH_P_8021Q or %ETH_P_8021AD. 708 * The only acceptable TPID values are those that the kernel module also parses 709 * as 802.1Q or 802.1AD headers, to prevent %OVS_ACTION_ATTR_PUSH_VLAN followed 710 * by %OVS_ACTION_ATTR_POP_VLAN from having surprising results. 711 */ 712struct ovs_action_push_vlan { 713 __be16 vlan_tpid; /* 802.1Q or 802.1ad TPID. */ 714 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */ 715}; 716 717/* Data path hash algorithm for computing Datapath hash. 718 * 719 * The algorithm type only specifies the fields in a flow 720 * will be used as part of the hash. Each datapath is free 721 * to use its own hash algorithm. The hash value will be 722 * opaque to the user space daemon. 723 */ 724enum ovs_hash_alg { 725 OVS_HASH_ALG_L4, 726}; 727 728/* 729 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument. 730 * @hash_alg: Algorithm used to compute hash prior to recirculation. 731 * @hash_basis: basis used for computing hash. 732 */ 733struct ovs_action_hash { 734 __u32 hash_alg; /* One of ovs_hash_alg. */ 735 __u32 hash_basis; 736}; 737 738/** 739 * enum ovs_ct_attr - Attributes for %OVS_ACTION_ATTR_CT action. 740 * @OVS_CT_ATTR_COMMIT: If present, commits the connection to the conntrack 741 * table. This allows future packets for the same connection to be identified 742 * as 'established' or 'related'. The flow key for the current packet will 743 * retain the pre-commit connection state. 744 * @OVS_CT_ATTR_ZONE: u16 connection tracking zone. 745 * @OVS_CT_ATTR_MARK: u32 value followed by u32 mask. For each bit set in the 746 * mask, the corresponding bit in the value is copied to the connection 747 * tracking mark field in the connection. 748 * @OVS_CT_ATTR_LABELS: %OVS_CT_LABELS_LEN value followed by %OVS_CT_LABELS_LEN 749 * mask. For each bit set in the mask, the corresponding bit in the value is 750 * copied to the connection tracking label field in the connection. 751 * @OVS_CT_ATTR_HELPER: variable length string defining conntrack ALG. 752 * @OVS_CT_ATTR_NAT: Nested OVS_NAT_ATTR_* for performing L3 network address 753 * translation (NAT) on the packet. 754 * @OVS_CT_ATTR_FORCE_COMMIT: Like %OVS_CT_ATTR_COMMIT, but instead of doing 755 * nothing if the connection is already committed will check that the current 756 * packet is in conntrack entry's original direction. If directionality does 757 * not match, will delete the existing conntrack entry and commit a new one. 758 * @OVS_CT_ATTR_EVENTMASK: Mask of bits indicating which conntrack event types 759 * (enum ip_conntrack_events IPCT_*) should be reported. For any bit set to 760 * zero, the corresponding event type is not generated. Default behavior 761 * depends on system configuration, but typically all event types are 762 * generated, hence listening on NFNLGRP_CONNTRACK_UPDATE events may get a lot 763 * of events. Explicitly passing this attribute allows limiting the updates 764 * received to the events of interest. The bit 1 << IPCT_NEW, 1 << 765 * IPCT_RELATED, and 1 << IPCT_DESTROY must be set to ones for those events to 766 * be received on NFNLGRP_CONNTRACK_NEW and NFNLGRP_CONNTRACK_DESTROY groups, 767 * respectively. Remaining bits control the changes for which an event is 768 * delivered on the NFNLGRP_CONNTRACK_UPDATE group. 769 * @OVS_CT_ATTR_TIMEOUT: Variable length string defining conntrack timeout. 770 */ 771enum ovs_ct_attr { 772 OVS_CT_ATTR_UNSPEC, 773 OVS_CT_ATTR_COMMIT, /* No argument, commits connection. */ 774 OVS_CT_ATTR_ZONE, /* u16 zone id. */ 775 OVS_CT_ATTR_MARK, /* mark to associate with this connection. */ 776 OVS_CT_ATTR_LABELS, /* labels to associate with this connection. */ 777 OVS_CT_ATTR_HELPER, /* netlink helper to assist detection of 778 related connections. */ 779 OVS_CT_ATTR_NAT, /* Nested OVS_NAT_ATTR_* */ 780 OVS_CT_ATTR_FORCE_COMMIT, /* No argument */ 781 OVS_CT_ATTR_EVENTMASK, /* u32 mask of IPCT_* events. */ 782 OVS_CT_ATTR_TIMEOUT, /* Associate timeout with this connection for 783 * fine-grain timeout tuning. */ 784 __OVS_CT_ATTR_MAX 785}; 786 787#define OVS_CT_ATTR_MAX (__OVS_CT_ATTR_MAX - 1) 788 789/** 790 * enum ovs_nat_attr - Attributes for %OVS_CT_ATTR_NAT. 791 * 792 * @OVS_NAT_ATTR_SRC: Flag for Source NAT (mangle source address/port). 793 * @OVS_NAT_ATTR_DST: Flag for Destination NAT (mangle destination 794 * address/port). Only one of (@OVS_NAT_ATTR_SRC, @OVS_NAT_ATTR_DST) may be 795 * specified. Effective only for packets for ct_state NEW connections. 796 * Packets of committed connections are mangled by the NAT action according to 797 * the committed NAT type regardless of the flags specified. As a corollary, a 798 * NAT action without a NAT type flag will only mangle packets of committed 799 * connections. The following NAT attributes only apply for NEW 800 * (non-committed) connections, and they may be included only when the CT 801 * action has the @OVS_CT_ATTR_COMMIT flag and either @OVS_NAT_ATTR_SRC or 802 * @OVS_NAT_ATTR_DST is also included. 803 * @OVS_NAT_ATTR_IP_MIN: struct in_addr or struct in6_addr 804 * @OVS_NAT_ATTR_IP_MAX: struct in_addr or struct in6_addr 805 * @OVS_NAT_ATTR_PROTO_MIN: u16 L4 protocol specific lower boundary (port) 806 * @OVS_NAT_ATTR_PROTO_MAX: u16 L4 protocol specific upper boundary (port) 807 * @OVS_NAT_ATTR_PERSISTENT: Flag for persistent IP mapping across reboots 808 * @OVS_NAT_ATTR_PROTO_HASH: Flag for pseudo random L4 port mapping (MD5) 809 * @OVS_NAT_ATTR_PROTO_RANDOM: Flag for fully randomized L4 port mapping 810 */ 811enum ovs_nat_attr { 812 OVS_NAT_ATTR_UNSPEC, 813 OVS_NAT_ATTR_SRC, 814 OVS_NAT_ATTR_DST, 815 OVS_NAT_ATTR_IP_MIN, 816 OVS_NAT_ATTR_IP_MAX, 817 OVS_NAT_ATTR_PROTO_MIN, 818 OVS_NAT_ATTR_PROTO_MAX, 819 OVS_NAT_ATTR_PERSISTENT, 820 OVS_NAT_ATTR_PROTO_HASH, 821 OVS_NAT_ATTR_PROTO_RANDOM, 822 __OVS_NAT_ATTR_MAX, 823}; 824 825#define OVS_NAT_ATTR_MAX (__OVS_NAT_ATTR_MAX - 1) 826 827/* 828 * struct ovs_action_push_eth - %OVS_ACTION_ATTR_PUSH_ETH action argument. 829 * @addresses: Source and destination MAC addresses. 830 * @eth_type: Ethernet type 831 */ 832struct ovs_action_push_eth { 833 struct ovs_key_ethernet addresses; 834}; 835 836/* 837 * enum ovs_check_pkt_len_attr - Attributes for %OVS_ACTION_ATTR_CHECK_PKT_LEN. 838 * 839 * @OVS_CHECK_PKT_LEN_ATTR_PKT_LEN: u16 Packet length to check for. 840 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER: Nested OVS_ACTION_ATTR_* 841 * actions to apply if the packer length is greater than the specified 842 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN. 843 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL - Nested OVS_ACTION_ATTR_* 844 * actions to apply if the packer length is lesser or equal to the specified 845 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN. 846 */ 847enum ovs_check_pkt_len_attr { 848 OVS_CHECK_PKT_LEN_ATTR_UNSPEC, 849 OVS_CHECK_PKT_LEN_ATTR_PKT_LEN, 850 OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER, 851 OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL, 852 __OVS_CHECK_PKT_LEN_ATTR_MAX, 853 854#ifdef __KERNEL__ 855 OVS_CHECK_PKT_LEN_ATTR_ARG /* struct check_pkt_len_arg */ 856#endif 857}; 858 859#define OVS_CHECK_PKT_LEN_ATTR_MAX (__OVS_CHECK_PKT_LEN_ATTR_MAX - 1) 860 861#ifdef __KERNEL__ 862struct check_pkt_len_arg { 863 u16 pkt_len; /* Same value as OVS_CHECK_PKT_LEN_ATTR_PKT_LEN'. */ 864 bool exec_for_greater; /* When true, actions in IF_GREATER will 865 * not change flow keys. False otherwise. 866 */ 867 bool exec_for_lesser_equal; /* When true, actions in IF_LESS_EQUAL 868 * will not change flow keys. False 869 * otherwise. 870 */ 871}; 872#endif 873 874/** 875 * enum ovs_action_attr - Action types. 876 * 877 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port. 878 * @OVS_ACTION_ATTR_TRUNC: Output packet to port with truncated packet size. 879 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested 880 * %OVS_USERSPACE_ATTR_* attributes. 881 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The 882 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its 883 * value. 884 * @OVS_ACTION_ATTR_SET_MASKED: Replaces the contents of an existing header. A 885 * nested %OVS_KEY_ATTR_* attribute specifies a header to modify, its value, 886 * and a mask. For every bit set in the mask, the corresponding bit value 887 * is copied from the value to the packet header field, rest of the bits are 888 * left unchanged. The non-masked value bits must be passed in as zeroes. 889 * Masking is not supported for the %OVS_KEY_ATTR_TUNNEL attribute. 890 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q or 802.1ad header 891 * onto the packet. 892 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q or 802.1ad header 893 * from the packet. 894 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in 895 * the nested %OVS_SAMPLE_ATTR_* attributes. 896 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the 897 * top of the packets MPLS label stack. Set the ethertype of the 898 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to 899 * indicate the new packet contents. 900 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the 901 * packet's MPLS label stack. Set the encapsulating frame's ethertype to 902 * indicate the new packet contents. This could potentially still be 903 * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there 904 * is no MPLS label stack, as determined by ethertype, no action is taken. 905 * @OVS_ACTION_ATTR_CT: Track the connection. Populate the conntrack-related 906 * entries in the flow key. 907 * @OVS_ACTION_ATTR_PUSH_ETH: Push a new outermost Ethernet header onto the 908 * packet. 909 * @OVS_ACTION_ATTR_POP_ETH: Pop the outermost Ethernet header off the 910 * packet. 911 * @OVS_ACTION_ATTR_CT_CLEAR: Clear conntrack state from the packet. 912 * @OVS_ACTION_ATTR_PUSH_NSH: push NSH header to the packet. 913 * @OVS_ACTION_ATTR_POP_NSH: pop the outermost NSH header off the packet. 914 * @OVS_ACTION_ATTR_METER: Run packet through a meter, which may drop the 915 * packet, or modify the packet (e.g., change the DSCP field). 916 * @OVS_ACTION_ATTR_CLONE: make a copy of the packet and execute a list of 917 * actions without affecting the original packet and key. 918 * @OVS_ACTION_ATTR_CHECK_PKT_LEN: Check the packet length and execute a set 919 * of actions if greater than the specified packet length, else execute 920 * another set of actions. 921 * @OVS_ACTION_ATTR_ADD_MPLS: Push a new MPLS label stack entry at the 922 * start of the packet or at the start of the l3 header depending on the value 923 * of l3 tunnel flag in the tun_flags field of OVS_ACTION_ATTR_ADD_MPLS 924 * argument. 925 * 926 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all 927 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment 928 * type may not be changed. 929 * 930 * @OVS_ACTION_ATTR_SET_TO_MASKED: Kernel internal masked set action translated 931 * from the @OVS_ACTION_ATTR_SET. 932 */ 933 934enum ovs_action_attr { 935 OVS_ACTION_ATTR_UNSPEC, 936 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */ 937 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */ 938 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */ 939 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */ 940 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */ 941 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */ 942 OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */ 943 OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */ 944 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */ 945 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */ 946 OVS_ACTION_ATTR_SET_MASKED, /* One nested OVS_KEY_ATTR_* including 947 * data immediately followed by a mask. 948 * The data must be zero for the unmasked 949 * bits. */ 950 OVS_ACTION_ATTR_CT, /* Nested OVS_CT_ATTR_* . */ 951 OVS_ACTION_ATTR_TRUNC, /* u32 struct ovs_action_trunc. */ 952 OVS_ACTION_ATTR_PUSH_ETH, /* struct ovs_action_push_eth. */ 953 OVS_ACTION_ATTR_POP_ETH, /* No argument. */ 954 OVS_ACTION_ATTR_CT_CLEAR, /* No argument. */ 955 OVS_ACTION_ATTR_PUSH_NSH, /* Nested OVS_NSH_KEY_ATTR_*. */ 956 OVS_ACTION_ATTR_POP_NSH, /* No argument. */ 957 OVS_ACTION_ATTR_METER, /* u32 meter ID. */ 958 OVS_ACTION_ATTR_CLONE, /* Nested OVS_CLONE_ATTR_*. */ 959 OVS_ACTION_ATTR_CHECK_PKT_LEN, /* Nested OVS_CHECK_PKT_LEN_ATTR_*. */ 960 OVS_ACTION_ATTR_ADD_MPLS, /* struct ovs_action_add_mpls. */ 961 OVS_ACTION_ATTR_DEC_TTL, /* Nested OVS_DEC_TTL_ATTR_*. */ 962 963 __OVS_ACTION_ATTR_MAX, /* Nothing past this will be accepted 964 * from userspace. */ 965 966#ifdef __KERNEL__ 967 OVS_ACTION_ATTR_SET_TO_MASKED, /* Kernel module internal masked 968 * set action converted from 969 * OVS_ACTION_ATTR_SET. */ 970#endif 971}; 972 973#define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1) 974 975/* Meters. */ 976#define OVS_METER_FAMILY "ovs_meter" 977#define OVS_METER_MCGROUP "ovs_meter" 978#define OVS_METER_VERSION 0x1 979 980enum ovs_meter_cmd { 981 OVS_METER_CMD_UNSPEC, 982 OVS_METER_CMD_FEATURES, /* Get features supported by the datapath. */ 983 OVS_METER_CMD_SET, /* Add or modify a meter. */ 984 OVS_METER_CMD_DEL, /* Delete a meter. */ 985 OVS_METER_CMD_GET /* Get meter stats. */ 986}; 987 988enum ovs_meter_attr { 989 OVS_METER_ATTR_UNSPEC, 990 OVS_METER_ATTR_ID, /* u32 meter ID within datapath. */ 991 OVS_METER_ATTR_KBPS, /* No argument. If set, units in kilobits 992 * per second. Otherwise, units in 993 * packets per second. 994 */ 995 OVS_METER_ATTR_STATS, /* struct ovs_flow_stats for the meter. */ 996 OVS_METER_ATTR_BANDS, /* Nested attributes for meter bands. */ 997 OVS_METER_ATTR_USED, /* u64 msecs last used in monotonic time. */ 998 OVS_METER_ATTR_CLEAR, /* Flag to clear stats, used. */ 999 OVS_METER_ATTR_MAX_METERS, /* u32 number of meters supported. */ 1000 OVS_METER_ATTR_MAX_BANDS, /* u32 max number of bands per meter. */
1001 OVS_METER_ATTR_PAD, 1002 __OVS_METER_ATTR_MAX 1003}; 1004 1005#define OVS_METER_ATTR_MAX (__OVS_METER_ATTR_MAX - 1) 1006 1007enum ovs_band_attr { 1008 OVS_BAND_ATTR_UNSPEC, 1009 OVS_BAND_ATTR_TYPE, /* u32 OVS_METER_BAND_TYPE_* constant. */ 1010 OVS_BAND_ATTR_RATE, /* u32 band rate in meter units (see above). */ 1011 OVS_BAND_ATTR_BURST, /* u32 burst size in meter units. */ 1012 OVS_BAND_ATTR_STATS, /* struct ovs_flow_stats for the band. */ 1013 __OVS_BAND_ATTR_MAX 1014}; 1015 1016#define OVS_BAND_ATTR_MAX (__OVS_BAND_ATTR_MAX - 1) 1017 1018enum ovs_meter_band_type { 1019 OVS_METER_BAND_TYPE_UNSPEC, 1020 OVS_METER_BAND_TYPE_DROP, /* Drop exceeding packets. */ 1021 __OVS_METER_BAND_TYPE_MAX 1022}; 1023 1024#define OVS_METER_BAND_TYPE_MAX (__OVS_METER_BAND_TYPE_MAX - 1) 1025 1026/* Conntrack limit */ 1027#define OVS_CT_LIMIT_FAMILY "ovs_ct_limit" 1028#define OVS_CT_LIMIT_MCGROUP "ovs_ct_limit" 1029#define OVS_CT_LIMIT_VERSION 0x1 1030 1031enum ovs_ct_limit_cmd { 1032 OVS_CT_LIMIT_CMD_UNSPEC, 1033 OVS_CT_LIMIT_CMD_SET, /* Add or modify ct limit. */ 1034 OVS_CT_LIMIT_CMD_DEL, /* Delete ct limit. */ 1035 OVS_CT_LIMIT_CMD_GET /* Get ct limit. */ 1036}; 1037 1038enum ovs_ct_limit_attr { 1039 OVS_CT_LIMIT_ATTR_UNSPEC, 1040 OVS_CT_LIMIT_ATTR_ZONE_LIMIT, /* Nested struct ovs_zone_limit. */ 1041 __OVS_CT_LIMIT_ATTR_MAX 1042}; 1043 1044#define OVS_CT_LIMIT_ATTR_MAX (__OVS_CT_LIMIT_ATTR_MAX - 1) 1045 1046#define OVS_ZONE_LIMIT_DEFAULT_ZONE -1 1047 1048struct ovs_zone_limit { 1049 int zone_id; 1050 __u32 limit; 1051 __u32 count; 1052}; 1053 1054enum ovs_dec_ttl_attr { 1055 OVS_DEC_TTL_ATTR_UNSPEC, 1056 OVS_DEC_TTL_ATTR_ACTION, /* Nested struct nlattr */ 1057 __OVS_DEC_TTL_ATTR_MAX 1058}; 1059 1060#endif /* _LINUX_OPENVSWITCH_H */ 1061