1137 lines · c
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/or7 * modify it under the terms of version 2 of the GNU General Public8 * License as published by the Free Software Foundation.9 *10 * This program is distributed in the hope that it will be useful, but11 * WITHOUT ANY WARRANTY; without even the implied warranty of12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU13 * General Public License for more details.14 *15 * You should have received a copy of the GNU General Public License16 * along with this program; if not, write to the Free Software17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA18 * 02110-1301, USA19 */20 21#ifndef _UAPI__LINUX_OPENVSWITCH_H22#define _UAPI__LINUX_OPENVSWITCH_H 123 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 not30 * specific to a datapath).31 *32 * Attributes following the header are specific to a particular OVS Generic33 * 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_FEATURES47 * when creating the datapath.48 */49#define OVS_DATAPATH_VERSION 250 51/* First OVS datapath version to support features */52#define OVS_DP_VER_FEATURES 253 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_SET60};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 "local65 * port". This is the name of the network device whose dp_ifindex is given in66 * the &struct ovs_header. Always present in notifications. Required in67 * %OVS_DP_NEW requests. May be used as an alternative to specifying68 * dp_ifindex in other requests (with a dp_ifindex of 0).69 * @OVS_DP_ATTR_UPCALL_PID: The Netlink socket in userspace that is initially70 * set on the datapath port (for OVS_ACTION_ATTR_MISS). Only valid on71 * %OVS_DP_CMD_NEW requests. A value of zero indicates that upcalls should72 * not be sent.73 * @OVS_DP_ATTR_PER_CPU_PIDS: Per-cpu array of PIDs for upcalls when74 * OVS_DP_F_DISPATCH_UPCALL_PER_CPU feature is set.75 * @OVS_DP_ATTR_STATS: Statistics about packets that have passed through the76 * datapath. Always present in notifications.77 * @OVS_DP_ATTR_MEGAFLOW_STATS: Statistics about mega flow masks usage for the78 * datapath. Always present in notifications.79 * @OVS_DP_ATTR_IFINDEX: Interface index for a new datapath netdev. Only80 * valid for %OVS_DP_CMD_NEW requests.81 *82 * These attributes follow the &struct ovs_header within the Generic Netlink83 * payload for %OVS_DP_* commands.84 */85enum 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 in95 * per-cpu dispatch mode96 */97 OVS_DP_ATTR_IFINDEX,98 __OVS_DP_ATTR_MAX99};100 101#define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1)102 103struct 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 110struct 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 118struct 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 0x1148 149enum 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 entire163 * packet as received, from the start of the Ethernet header onward. For164 * %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by165 * actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is166 * the flow key extracted from the packet as originally received.167 * @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key168 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows169 * userspace to adapt its flow setup strategy by comparing its notion of the170 * flow key against the kernel's.171 * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used172 * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes.173 * Also used in upcall when %OVS_ACTION_ATTR_USERSPACE has optional174 * %OVS_USERSPACE_ATTR_ACTIONS attribute.175 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION176 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an177 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content178 * specified there.179 * @OVS_PACKET_ATTR_EGRESS_TUN_KEY: Present for an %OVS_PACKET_CMD_ACTION180 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an181 * %OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute, which is sent only if the182 * output port is actually a tunnel port. Contains the output tunnel key183 * extracted from the packet as nested %OVS_TUNNEL_KEY_ATTR_* attributes.184 * @OVS_PACKET_ATTR_MRU: Present for an %OVS_PACKET_CMD_ACTION and185 * @OVS_PACKET_ATTR_LEN: Packet size before truncation.186 * %OVS_PACKET_ATTR_USERSPACE action specify the Maximum received fragment187 * size.188 * @OVS_PACKET_ATTR_HASH: Packet hash info (e.g. hash, sw_hash and l4_hash in skb).189 *190 * These attributes follow the &struct ovs_header within the Generic Netlink191 * payload for %OVS_PACKET_* commands.192 */193enum ovs_packet_attr {194 OVS_PACKET_ATTR_UNSPEC,195 OVS_PACKET_ATTR_PACKET, /* Packet data. */196 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */197 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */198 OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */199 OVS_PACKET_ATTR_EGRESS_TUN_KEY, /* Nested OVS_TUNNEL_KEY_ATTR_*200 attributes. */201 OVS_PACKET_ATTR_UNUSED1,202 OVS_PACKET_ATTR_UNUSED2,203 OVS_PACKET_ATTR_PROBE, /* Packet operation is a feature probe,204 error logging should be suppressed. */205 OVS_PACKET_ATTR_MRU, /* Maximum received IP fragment size. */206 OVS_PACKET_ATTR_LEN, /* Packet size before truncation. */207 OVS_PACKET_ATTR_HASH, /* Packet hash. */208 __OVS_PACKET_ATTR_MAX209};210 211#define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)212 213/* Virtual ports. */214 215#define OVS_VPORT_FAMILY "ovs_vport"216#define OVS_VPORT_MCGROUP "ovs_vport"217#define OVS_VPORT_VERSION 0x1218 219enum ovs_vport_cmd {220 OVS_VPORT_CMD_UNSPEC,221 OVS_VPORT_CMD_NEW,222 OVS_VPORT_CMD_DEL,223 OVS_VPORT_CMD_GET,224 OVS_VPORT_CMD_SET225};226 227enum ovs_vport_type {228 OVS_VPORT_TYPE_UNSPEC,229 OVS_VPORT_TYPE_NETDEV, /* network device */230 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */231 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */232 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */233 OVS_VPORT_TYPE_GENEVE, /* Geneve tunnel. */234 __OVS_VPORT_TYPE_MAX235};236 237#define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)238 239/**240 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.241 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.242 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type243 * of vport.244 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device245 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes246 * plus a null terminator.247 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.248 * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace249 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets250 * received on this port. If this is a single-element array of value 0,251 * upcalls should not be sent.252 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for253 * packets sent or received through the vport.254 *255 * These attributes follow the &struct ovs_header within the Generic Netlink256 * payload for %OVS_VPORT_* commands.257 *258 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and259 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is260 * optional; if not specified a free port number is automatically selected.261 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type262 * of vport.263 *264 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to265 * look up the vport to operate on; otherwise dp_idx from the &struct266 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport.267 */268enum ovs_vport_attr {269 OVS_VPORT_ATTR_UNSPEC,270 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */271 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */272 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */273 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */274 OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */275 /* receiving upcalls */276 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */277 OVS_VPORT_ATTR_PAD,278 OVS_VPORT_ATTR_IFINDEX,279 OVS_VPORT_ATTR_NETNSID,280 OVS_VPORT_ATTR_UPCALL_STATS,281 __OVS_VPORT_ATTR_MAX282};283 284#define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)285 286/**287 * enum ovs_vport_upcall_attr - attributes for %OVS_VPORT_UPCALL* commands288 * @OVS_VPORT_UPCALL_SUCCESS: 64-bit upcall success packets.289 * @OVS_VPORT_UPCALL_FAIL: 64-bit upcall fail packets.290 */291enum ovs_vport_upcall_attr {292 OVS_VPORT_UPCALL_ATTR_SUCCESS,293 OVS_VPORT_UPCALL_ATTR_FAIL,294 __OVS_VPORT_UPCALL_ATTR_MAX295};296 297#define OVS_VPORT_UPCALL_ATTR_MAX (__OVS_VPORT_UPCALL_ATTR_MAX - 1)298 299enum {300 OVS_VXLAN_EXT_UNSPEC,301 OVS_VXLAN_EXT_GBP, /* Flag or __u32 */302 __OVS_VXLAN_EXT_MAX,303};304 305#define OVS_VXLAN_EXT_MAX (__OVS_VXLAN_EXT_MAX - 1)306 307 308/* OVS_VPORT_ATTR_OPTIONS attributes for tunnels.309 */310enum {311 OVS_TUNNEL_ATTR_UNSPEC,312 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */313 OVS_TUNNEL_ATTR_EXTENSION,314 __OVS_TUNNEL_ATTR_MAX315};316 317#define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1)318 319/* Flows. */320 321#define OVS_FLOW_FAMILY "ovs_flow"322#define OVS_FLOW_MCGROUP "ovs_flow"323#define OVS_FLOW_VERSION 0x1324 325enum ovs_flow_cmd {326 OVS_FLOW_CMD_UNSPEC,327 OVS_FLOW_CMD_NEW,328 OVS_FLOW_CMD_DEL,329 OVS_FLOW_CMD_GET,330 OVS_FLOW_CMD_SET331};332 333struct ovs_flow_stats {334 __u64 n_packets; /* Number of matched packets. */335 __u64 n_bytes; /* Number of matched bytes. */336};337 338enum ovs_key_attr {339 OVS_KEY_ATTR_UNSPEC,340 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */341 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */342 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */343 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */344 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */345 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */346 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */347 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */348 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */349 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */350 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */351 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */352 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */353 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */354 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */355 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */356 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */357 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */358 OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash359 is not computed by the datapath. */360 OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */361 OVS_KEY_ATTR_MPLS, /* array of struct ovs_key_mpls.362 * The implementation may restrict363 * the accepted length of the array. */364 OVS_KEY_ATTR_CT_STATE, /* u32 bitmask of OVS_CS_F_* */365 OVS_KEY_ATTR_CT_ZONE, /* u16 connection tracking zone. */366 OVS_KEY_ATTR_CT_MARK, /* u32 connection tracking mark */367 OVS_KEY_ATTR_CT_LABELS, /* 16-octet connection tracking label */368 OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4, /* struct ovs_key_ct_tuple_ipv4 */369 OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6, /* struct ovs_key_ct_tuple_ipv6 */370 OVS_KEY_ATTR_NSH, /* Nested set of ovs_nsh_key_* */371 372 /* User space decided to squat on types 29 and 30. They are defined373 * below, but should not be sent to the kernel.374 *375 * WARNING: No new types should be added unless they are defined376 * for both kernel and user space (no 'ifdef's). It's hard377 * to keep compatibility otherwise.378 */379 OVS_KEY_ATTR_PACKET_TYPE, /* be32 packet type */380 OVS_KEY_ATTR_ND_EXTENSIONS, /* IPv6 Neighbor Discovery extensions */381 382 OVS_KEY_ATTR_TUNNEL_INFO, /* struct ip_tunnel_info.383 * For in-kernel use only.384 */385 OVS_KEY_ATTR_IPV6_EXTHDRS, /* struct ovs_key_ipv6_exthdr */386 __OVS_KEY_ATTR_MAX387};388 389#define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)390 391enum ovs_tunnel_key_attr {392 /* OVS_TUNNEL_KEY_ATTR_NONE, standard nl API requires this attribute! */393 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */394 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */395 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */396 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */397 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */398 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */399 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */400 OVS_TUNNEL_KEY_ATTR_OAM, /* No argument. OAM frame. */401 OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, /* Array of Geneve options. */402 OVS_TUNNEL_KEY_ATTR_TP_SRC, /* be16 src Transport Port. */403 OVS_TUNNEL_KEY_ATTR_TP_DST, /* be16 dst Transport Port. */404 OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS, /* Nested OVS_VXLAN_EXT_* */405 OVS_TUNNEL_KEY_ATTR_IPV6_SRC, /* struct in6_addr src IPv6 address. */406 OVS_TUNNEL_KEY_ATTR_IPV6_DST, /* struct in6_addr dst IPv6 address. */407 OVS_TUNNEL_KEY_ATTR_PAD,408 OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS, /* struct erspan_metadata */409 OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE, /* No argument. IPV4_INFO_BRIDGE mode.*/410 __OVS_TUNNEL_KEY_ATTR_MAX411};412 413#define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1)414 415/**416 * enum ovs_frag_type - IPv4 and IPv6 fragment type417 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment.418 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.419 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.420 *421 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct422 * ovs_key_ipv6.423 */424enum ovs_frag_type {425 OVS_FRAG_TYPE_NONE,426 OVS_FRAG_TYPE_FIRST,427 OVS_FRAG_TYPE_LATER,428 __OVS_FRAG_TYPE_MAX429};430 431#define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)432 433struct ovs_key_ethernet {434 __u8 eth_src[ETH_ALEN];435 __u8 eth_dst[ETH_ALEN];436};437 438struct ovs_key_mpls {439 __be32 mpls_lse;440};441 442struct ovs_key_ipv4 {443 __be32 ipv4_src;444 __be32 ipv4_dst;445 __u8 ipv4_proto;446 __u8 ipv4_tos;447 __u8 ipv4_ttl;448 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */449};450 451struct ovs_key_ipv6 {452 __be32 ipv6_src[4];453 __be32 ipv6_dst[4];454 __be32 ipv6_label; /* 20-bits in least-significant bits. */455 __u8 ipv6_proto;456 __u8 ipv6_tclass;457 __u8 ipv6_hlimit;458 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */459};460 461/* separate structure to support backward compatibility with older user space */462struct ovs_key_ipv6_exthdrs {463 __u16 hdrs;464};465 466struct ovs_key_tcp {467 __be16 tcp_src;468 __be16 tcp_dst;469};470 471struct ovs_key_udp {472 __be16 udp_src;473 __be16 udp_dst;474};475 476struct ovs_key_sctp {477 __be16 sctp_src;478 __be16 sctp_dst;479};480 481struct ovs_key_icmp {482 __u8 icmp_type;483 __u8 icmp_code;484};485 486struct ovs_key_icmpv6 {487 __u8 icmpv6_type;488 __u8 icmpv6_code;489};490 491struct ovs_key_arp {492 __be32 arp_sip;493 __be32 arp_tip;494 __be16 arp_op;495 __u8 arp_sha[ETH_ALEN];496 __u8 arp_tha[ETH_ALEN];497};498 499struct ovs_key_nd {500 __be32 nd_target[4];501 __u8 nd_sll[ETH_ALEN];502 __u8 nd_tll[ETH_ALEN];503};504 505#define OVS_CT_LABELS_LEN_32 4506#define OVS_CT_LABELS_LEN (OVS_CT_LABELS_LEN_32 * sizeof(__u32))507struct ovs_key_ct_labels {508 union {509 __u8 ct_labels[OVS_CT_LABELS_LEN];510 __u32 ct_labels_32[OVS_CT_LABELS_LEN_32];511 };512};513 514/* OVS_KEY_ATTR_CT_STATE flags */515#define OVS_CS_F_NEW 0x01 /* Beginning of a new connection. */516#define OVS_CS_F_ESTABLISHED 0x02 /* Part of an existing connection. */517#define OVS_CS_F_RELATED 0x04 /* Related to an established518 * connection. */519#define OVS_CS_F_REPLY_DIR 0x08 /* Flow is in the reply direction. */520#define OVS_CS_F_INVALID 0x10 /* Could not track connection. */521#define OVS_CS_F_TRACKED 0x20 /* Conntrack has occurred. */522#define OVS_CS_F_SRC_NAT 0x40 /* Packet's source address/port was523 * mangled by NAT.524 */525#define OVS_CS_F_DST_NAT 0x80 /* Packet's destination address/port526 * was mangled by NAT.527 */528 529#define OVS_CS_F_NAT_MASK (OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT)530 531struct ovs_key_ct_tuple_ipv4 {532 __be32 ipv4_src;533 __be32 ipv4_dst;534 __be16 src_port;535 __be16 dst_port;536 __u8 ipv4_proto;537};538 539struct ovs_key_ct_tuple_ipv6 {540 __be32 ipv6_src[4];541 __be32 ipv6_dst[4];542 __be16 src_port;543 __be16 dst_port;544 __u8 ipv6_proto;545};546 547enum ovs_nsh_key_attr {548 OVS_NSH_KEY_ATTR_UNSPEC,549 OVS_NSH_KEY_ATTR_BASE, /* struct ovs_nsh_key_base. */550 OVS_NSH_KEY_ATTR_MD1, /* struct ovs_nsh_key_md1. */551 OVS_NSH_KEY_ATTR_MD2, /* variable-length octets for MD type 2. */552 __OVS_NSH_KEY_ATTR_MAX553};554 555#define OVS_NSH_KEY_ATTR_MAX (__OVS_NSH_KEY_ATTR_MAX - 1)556 557struct ovs_nsh_key_base {558 __u8 flags;559 __u8 ttl;560 __u8 mdtype;561 __u8 np;562 __be32 path_hdr;563};564 565#define NSH_MD1_CONTEXT_SIZE 4566 567struct ovs_nsh_key_md1 {568 __be32 context[NSH_MD1_CONTEXT_SIZE];569};570 571/**572 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands.573 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow574 * key. Always present in notifications. Required for all requests (except575 * dumps).576 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying577 * the actions to take for packets that match the key. Always present in578 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for579 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without580 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions,581 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given.582 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this583 * flow. Present in notifications if the stats would be nonzero. Ignored in584 * requests.585 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the586 * TCP flags seen on packets in this flow. Only present in notifications for587 * TCP flows, and only if it would be nonzero. Ignored in requests.588 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on589 * the system monotonic clock, at which a packet was last processed for this590 * flow. Only present in notifications if a packet has been processed for this591 * flow. Ignored in requests.592 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the593 * last-used time, accumulated TCP flags, and statistics for this flow.594 * Otherwise ignored in requests. Never present in notifications.595 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the596 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact597 * match with corresponding flow key bit, while mask bit value '0' specifies598 * a wildcarded match. Omitting attribute is treated as wildcarding all599 * corresponding fields. Optional for all requests. If not present,600 * all flow key bits are exact match bits.601 * @OVS_FLOW_ATTR_UFID: A value between 1-16 octets specifying a unique602 * identifier for the flow. Causes the flow to be indexed by this value rather603 * than the value of the %OVS_FLOW_ATTR_KEY attribute. Optional for all604 * requests. Present in notifications if the flow was created with this605 * attribute.606 * @OVS_FLOW_ATTR_UFID_FLAGS: A 32-bit value of OR'd %OVS_UFID_F_*607 * flags that provide alternative semantics for flow installation and608 * retrieval. Optional for all requests.609 *610 * These attributes follow the &struct ovs_header within the Generic Netlink611 * payload for %OVS_FLOW_* commands.612 */613enum ovs_flow_attr {614 OVS_FLOW_ATTR_UNSPEC,615 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */616 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */617 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */618 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */619 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */620 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */621 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */622 OVS_FLOW_ATTR_PROBE, /* Flow operation is a feature probe, error623 * logging should be suppressed. */624 OVS_FLOW_ATTR_UFID, /* Variable length unique flow identifier. */625 OVS_FLOW_ATTR_UFID_FLAGS,/* u32 of OVS_UFID_F_*. */626 OVS_FLOW_ATTR_PAD,627 __OVS_FLOW_ATTR_MAX628};629 630#define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)631 632/**633 * Omit attributes for notifications.634 *635 * If a datapath request contains an %OVS_UFID_F_OMIT_* flag, then the datapath636 * may omit the corresponding %OVS_FLOW_ATTR_* from the response.637 */638#define OVS_UFID_F_OMIT_KEY (1 << 0)639#define OVS_UFID_F_OMIT_MASK (1 << 1)640#define OVS_UFID_F_OMIT_ACTIONS (1 << 2)641 642/**643 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action.644 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with645 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of646 * %UINT32_MAX samples all packets and intermediate values sample intermediate647 * fractions of packets.648 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event.649 * Actions are passed as nested attributes.650 *651 * Executes the specified actions with the given probability on a per-packet652 * basis. Nested actions will be able to access the probability value of the653 * parent @OVS_ACTION_ATTR_SAMPLE.654 */655enum ovs_sample_attr {656 OVS_SAMPLE_ATTR_UNSPEC,657 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */658 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */659 __OVS_SAMPLE_ATTR_MAX,660 661#ifdef __KERNEL__662 OVS_SAMPLE_ATTR_ARG /* struct sample_arg */663#endif664};665 666#define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)667 668#ifdef __KERNEL__669struct sample_arg {670 bool exec; /* When true, actions in sample will not671 * change flow keys. False otherwise.672 */673 u32 probability; /* Same value as674 * 'OVS_SAMPLE_ATTR_PROBABILITY'.675 */676};677#endif678 679/**680 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.681 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION682 * message should be sent. Required.683 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is684 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA.685 * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get686 * tunnel info.687 * @OVS_USERSPACE_ATTR_ACTIONS: If present, send actions with upcall.688 */689enum ovs_userspace_attr {690 OVS_USERSPACE_ATTR_UNSPEC,691 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */692 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */693 OVS_USERSPACE_ATTR_EGRESS_TUN_PORT, /* Optional, u32 output port694 * to get tunnel info. */695 OVS_USERSPACE_ATTR_ACTIONS, /* Optional flag to get actions. */696 __OVS_USERSPACE_ATTR_MAX697};698 699#define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)700 701struct ovs_action_trunc {702 __u32 max_len; /* Max packet size in bytes. */703};704 705/**706 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument.707 * @mpls_lse: MPLS label stack entry to push.708 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame.709 *710 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and711 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected.712 */713struct ovs_action_push_mpls {714 __be32 mpls_lse;715 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */716};717 718/**719 * struct ovs_action_add_mpls - %OVS_ACTION_ATTR_ADD_MPLS action720 * argument.721 * @mpls_lse: MPLS label stack entry to push.722 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame.723 * @tun_flags: MPLS tunnel attributes.724 *725 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and726 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected.727 */728struct ovs_action_add_mpls {729 __be32 mpls_lse;730 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */731 __u16 tun_flags;732};733 734#define OVS_MPLS_L3_TUNNEL_FLAG_MASK (1 << 0) /* Flag to specify the place of735 * insertion of MPLS header.736 * When false, the MPLS header737 * will be inserted at the start738 * of the packet.739 * When true, the MPLS header740 * will be inserted at the start741 * of the l3 header.742 */743 744/**745 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument.746 * @vlan_tpid: Tag protocol identifier (TPID) to push.747 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set748 * (but it will not be set in the 802.1Q header that is pushed).749 *750 * The @vlan_tpid value is typically %ETH_P_8021Q or %ETH_P_8021AD.751 * The only acceptable TPID values are those that the kernel module also parses752 * as 802.1Q or 802.1AD headers, to prevent %OVS_ACTION_ATTR_PUSH_VLAN followed753 * by %OVS_ACTION_ATTR_POP_VLAN from having surprising results.754 */755struct ovs_action_push_vlan {756 __be16 vlan_tpid; /* 802.1Q or 802.1ad TPID. */757 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */758};759 760/* Data path hash algorithm for computing Datapath hash.761 *762 * The algorithm type only specifies the fields in a flow763 * will be used as part of the hash. Each datapath is free764 * to use its own hash algorithm. The hash value will be765 * opaque to the user space daemon.766 */767enum ovs_hash_alg {768 OVS_HASH_ALG_L4,769 OVS_HASH_ALG_SYM_L4,770};771 772/*773 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument.774 * @hash_alg: Algorithm used to compute hash prior to recirculation.775 * @hash_basis: basis used for computing hash.776 */777struct ovs_action_hash {778 __u32 hash_alg; /* One of ovs_hash_alg. */779 __u32 hash_basis;780};781 782/**783 * enum ovs_ct_attr - Attributes for %OVS_ACTION_ATTR_CT action.784 * @OVS_CT_ATTR_COMMIT: If present, commits the connection to the conntrack785 * table. This allows future packets for the same connection to be identified786 * as 'established' or 'related'. The flow key for the current packet will787 * retain the pre-commit connection state.788 * @OVS_CT_ATTR_ZONE: u16 connection tracking zone.789 * @OVS_CT_ATTR_MARK: u32 value followed by u32 mask. For each bit set in the790 * mask, the corresponding bit in the value is copied to the connection791 * tracking mark field in the connection.792 * @OVS_CT_ATTR_LABELS: %OVS_CT_LABELS_LEN value followed by %OVS_CT_LABELS_LEN793 * mask. For each bit set in the mask, the corresponding bit in the value is794 * copied to the connection tracking label field in the connection.795 * @OVS_CT_ATTR_HELPER: variable length string defining conntrack ALG.796 * @OVS_CT_ATTR_NAT: Nested OVS_NAT_ATTR_* for performing L3 network address797 * translation (NAT) on the packet.798 * @OVS_CT_ATTR_FORCE_COMMIT: Like %OVS_CT_ATTR_COMMIT, but instead of doing799 * nothing if the connection is already committed will check that the current800 * packet is in conntrack entry's original direction. If directionality does801 * not match, will delete the existing conntrack entry and commit a new one.802 * @OVS_CT_ATTR_EVENTMASK: Mask of bits indicating which conntrack event types803 * (enum ip_conntrack_events IPCT_*) should be reported. For any bit set to804 * zero, the corresponding event type is not generated. Default behavior805 * depends on system configuration, but typically all event types are806 * generated, hence listening on NFNLGRP_CONNTRACK_UPDATE events may get a lot807 * of events. Explicitly passing this attribute allows limiting the updates808 * received to the events of interest. The bit 1 << IPCT_NEW, 1 <<809 * IPCT_RELATED, and 1 << IPCT_DESTROY must be set to ones for those events to810 * be received on NFNLGRP_CONNTRACK_NEW and NFNLGRP_CONNTRACK_DESTROY groups,811 * respectively. Remaining bits control the changes for which an event is812 * delivered on the NFNLGRP_CONNTRACK_UPDATE group.813 * @OVS_CT_ATTR_TIMEOUT: Variable length string defining conntrack timeout.814 */815enum ovs_ct_attr {816 OVS_CT_ATTR_UNSPEC,817 OVS_CT_ATTR_COMMIT, /* No argument, commits connection. */818 OVS_CT_ATTR_ZONE, /* u16 zone id. */819 OVS_CT_ATTR_MARK, /* mark to associate with this connection. */820 OVS_CT_ATTR_LABELS, /* labels to associate with this connection. */821 OVS_CT_ATTR_HELPER, /* netlink helper to assist detection of822 related connections. */823 OVS_CT_ATTR_NAT, /* Nested OVS_NAT_ATTR_* */824 OVS_CT_ATTR_FORCE_COMMIT, /* No argument */825 OVS_CT_ATTR_EVENTMASK, /* u32 mask of IPCT_* events. */826 OVS_CT_ATTR_TIMEOUT, /* Associate timeout with this connection for827 * fine-grain timeout tuning. */828 __OVS_CT_ATTR_MAX829};830 831#define OVS_CT_ATTR_MAX (__OVS_CT_ATTR_MAX - 1)832 833/**834 * enum ovs_nat_attr - Attributes for %OVS_CT_ATTR_NAT.835 *836 * @OVS_NAT_ATTR_SRC: Flag for Source NAT (mangle source address/port).837 * @OVS_NAT_ATTR_DST: Flag for Destination NAT (mangle destination838 * address/port). Only one of (@OVS_NAT_ATTR_SRC, @OVS_NAT_ATTR_DST) may be839 * specified. Effective only for packets for ct_state NEW connections.840 * Packets of committed connections are mangled by the NAT action according to841 * the committed NAT type regardless of the flags specified. As a corollary, a842 * NAT action without a NAT type flag will only mangle packets of committed843 * connections. The following NAT attributes only apply for NEW844 * (non-committed) connections, and they may be included only when the CT845 * action has the @OVS_CT_ATTR_COMMIT flag and either @OVS_NAT_ATTR_SRC or846 * @OVS_NAT_ATTR_DST is also included.847 * @OVS_NAT_ATTR_IP_MIN: struct in_addr or struct in6_addr848 * @OVS_NAT_ATTR_IP_MAX: struct in_addr or struct in6_addr849 * @OVS_NAT_ATTR_PROTO_MIN: u16 L4 protocol specific lower boundary (port)850 * @OVS_NAT_ATTR_PROTO_MAX: u16 L4 protocol specific upper boundary (port)851 * @OVS_NAT_ATTR_PERSISTENT: Flag for persistent IP mapping across reboots852 * @OVS_NAT_ATTR_PROTO_HASH: Flag for pseudo random L4 port mapping (MD5)853 * @OVS_NAT_ATTR_PROTO_RANDOM: Flag for fully randomized L4 port mapping854 */855enum ovs_nat_attr {856 OVS_NAT_ATTR_UNSPEC,857 OVS_NAT_ATTR_SRC,858 OVS_NAT_ATTR_DST,859 OVS_NAT_ATTR_IP_MIN,860 OVS_NAT_ATTR_IP_MAX,861 OVS_NAT_ATTR_PROTO_MIN,862 OVS_NAT_ATTR_PROTO_MAX,863 OVS_NAT_ATTR_PERSISTENT,864 OVS_NAT_ATTR_PROTO_HASH,865 OVS_NAT_ATTR_PROTO_RANDOM,866 __OVS_NAT_ATTR_MAX,867};868 869#define OVS_NAT_ATTR_MAX (__OVS_NAT_ATTR_MAX - 1)870 871/*872 * struct ovs_action_push_eth - %OVS_ACTION_ATTR_PUSH_ETH action argument.873 * @addresses: Source and destination MAC addresses.874 * @eth_type: Ethernet type875 */876struct ovs_action_push_eth {877 struct ovs_key_ethernet addresses;878};879 880/*881 * enum ovs_check_pkt_len_attr - Attributes for %OVS_ACTION_ATTR_CHECK_PKT_LEN.882 *883 * @OVS_CHECK_PKT_LEN_ATTR_PKT_LEN: u16 Packet length to check for.884 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER: Nested OVS_ACTION_ATTR_*885 * actions to apply if the packer length is greater than the specified886 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN.887 * @OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL - Nested OVS_ACTION_ATTR_*888 * actions to apply if the packer length is lesser or equal to the specified889 * length in the attr - OVS_CHECK_PKT_LEN_ATTR_PKT_LEN.890 */891enum ovs_check_pkt_len_attr {892 OVS_CHECK_PKT_LEN_ATTR_UNSPEC,893 OVS_CHECK_PKT_LEN_ATTR_PKT_LEN,894 OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER,895 OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL,896 __OVS_CHECK_PKT_LEN_ATTR_MAX,897 898#ifdef __KERNEL__899 OVS_CHECK_PKT_LEN_ATTR_ARG /* struct check_pkt_len_arg */900#endif901};902 903#define OVS_CHECK_PKT_LEN_ATTR_MAX (__OVS_CHECK_PKT_LEN_ATTR_MAX - 1)904 905#ifdef __KERNEL__906struct check_pkt_len_arg {907 u16 pkt_len; /* Same value as OVS_CHECK_PKT_LEN_ATTR_PKT_LEN'. */908 bool exec_for_greater; /* When true, actions in IF_GREATER will909 * not change flow keys. False otherwise.910 */911 bool exec_for_lesser_equal; /* When true, actions in IF_LESS_EQUAL912 * will not change flow keys. False913 * otherwise.914 */915};916#endif917 918#define OVS_PSAMPLE_COOKIE_MAX_SIZE 16919/**920 * enum ovs_psample_attr - Attributes for %OVS_ACTION_ATTR_PSAMPLE921 * action.922 *923 * @OVS_PSAMPLE_ATTR_GROUP: 32-bit number to identify the source of the924 * sample.925 * @OVS_PSAMPLE_ATTR_COOKIE: An optional variable-length binary cookie that926 * contains user-defined metadata. The maximum length is927 * OVS_PSAMPLE_COOKIE_MAX_SIZE bytes.928 *929 * Sends the packet to the psample multicast group with the specified group and930 * cookie. It is possible to combine this action with the931 * %OVS_ACTION_ATTR_TRUNC action to limit the size of the sample.932 */933enum ovs_psample_attr {934 OVS_PSAMPLE_ATTR_GROUP = 1, /* u32 number. */935 OVS_PSAMPLE_ATTR_COOKIE, /* Optional, user specified cookie. */936 937 /* private: */938 __OVS_PSAMPLE_ATTR_MAX939};940 941#define OVS_PSAMPLE_ATTR_MAX (__OVS_PSAMPLE_ATTR_MAX - 1)942 943/**944 * enum ovs_action_attr - Action types.945 *946 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port.947 * @OVS_ACTION_ATTR_TRUNC: Output packet to port with truncated packet size.948 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested949 * %OVS_USERSPACE_ATTR_* attributes.950 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The951 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its952 * value.953 * @OVS_ACTION_ATTR_SET_MASKED: Replaces the contents of an existing header. A954 * nested %OVS_KEY_ATTR_* attribute specifies a header to modify, its value,955 * and a mask. For every bit set in the mask, the corresponding bit value956 * is copied from the value to the packet header field, rest of the bits are957 * left unchanged. The non-masked value bits must be passed in as zeroes.958 * Masking is not supported for the %OVS_KEY_ATTR_TUNNEL attribute.959 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q or 802.1ad header960 * onto the packet.961 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q or 802.1ad header962 * from the packet.963 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in964 * the nested %OVS_SAMPLE_ATTR_* attributes.965 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the966 * top of the packets MPLS label stack. Set the ethertype of the967 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to968 * indicate the new packet contents.969 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the970 * packet's MPLS label stack. Set the encapsulating frame's ethertype to971 * indicate the new packet contents. This could potentially still be972 * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there973 * is no MPLS label stack, as determined by ethertype, no action is taken.974 * @OVS_ACTION_ATTR_CT: Track the connection. Populate the conntrack-related975 * entries in the flow key.976 * @OVS_ACTION_ATTR_PUSH_ETH: Push a new outermost Ethernet header onto the977 * packet.978 * @OVS_ACTION_ATTR_POP_ETH: Pop the outermost Ethernet header off the979 * packet.980 * @OVS_ACTION_ATTR_CT_CLEAR: Clear conntrack state from the packet.981 * @OVS_ACTION_ATTR_PUSH_NSH: push NSH header to the packet.982 * @OVS_ACTION_ATTR_POP_NSH: pop the outermost NSH header off the packet.983 * @OVS_ACTION_ATTR_METER: Run packet through a meter, which may drop the984 * packet, or modify the packet (e.g., change the DSCP field).985 * @OVS_ACTION_ATTR_CLONE: make a copy of the packet and execute a list of986 * actions without affecting the original packet and key.987 * @OVS_ACTION_ATTR_CHECK_PKT_LEN: Check the packet length and execute a set988 * of actions if greater than the specified packet length, else execute989 * another set of actions.990 * @OVS_ACTION_ATTR_ADD_MPLS: Push a new MPLS label stack entry at the991 * start of the packet or at the start of the l3 header depending on the value992 * of l3 tunnel flag in the tun_flags field of OVS_ACTION_ATTR_ADD_MPLS993 * argument.994 * @OVS_ACTION_ATTR_DROP: Explicit drop action.995 * @OVS_ACTION_ATTR_PSAMPLE: Send a sample of the packet to external observers996 * via psample.997 *998 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all999 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment1000 * type may not be changed.1001 *1002 * @OVS_ACTION_ATTR_SET_TO_MASKED: Kernel internal masked set action translated1003 * from the @OVS_ACTION_ATTR_SET.1004 */1005 1006enum ovs_action_attr {1007 OVS_ACTION_ATTR_UNSPEC,1008 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */1009 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */1010 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */1011 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */1012 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */1013 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */1014 OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */1015 OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */1016 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */1017 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */1018 OVS_ACTION_ATTR_SET_MASKED, /* One nested OVS_KEY_ATTR_* including1019 * data immediately followed by a mask.1020 * The data must be zero for the unmasked1021 * bits. */1022 OVS_ACTION_ATTR_CT, /* Nested OVS_CT_ATTR_* . */1023 OVS_ACTION_ATTR_TRUNC, /* u32 struct ovs_action_trunc. */1024 OVS_ACTION_ATTR_PUSH_ETH, /* struct ovs_action_push_eth. */1025 OVS_ACTION_ATTR_POP_ETH, /* No argument. */1026 OVS_ACTION_ATTR_CT_CLEAR, /* No argument. */1027 OVS_ACTION_ATTR_PUSH_NSH, /* Nested OVS_NSH_KEY_ATTR_*. */1028 OVS_ACTION_ATTR_POP_NSH, /* No argument. */1029 OVS_ACTION_ATTR_METER, /* u32 meter ID. */1030 OVS_ACTION_ATTR_CLONE, /* Nested OVS_CLONE_ATTR_*. */1031 OVS_ACTION_ATTR_CHECK_PKT_LEN, /* Nested OVS_CHECK_PKT_LEN_ATTR_*. */1032 OVS_ACTION_ATTR_ADD_MPLS, /* struct ovs_action_add_mpls. */1033 OVS_ACTION_ATTR_DEC_TTL, /* Nested OVS_DEC_TTL_ATTR_*. */1034 OVS_ACTION_ATTR_DROP, /* u32 error code. */1035 OVS_ACTION_ATTR_PSAMPLE, /* Nested OVS_PSAMPLE_ATTR_*. */1036 1037 __OVS_ACTION_ATTR_MAX, /* Nothing past this will be accepted1038 * from userspace. */1039 1040#ifdef __KERNEL__1041 OVS_ACTION_ATTR_SET_TO_MASKED, /* Kernel module internal masked1042 * set action converted from1043 * OVS_ACTION_ATTR_SET. */1044#endif1045};1046 1047#define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)1048 1049/* Meters. */1050#define OVS_METER_FAMILY "ovs_meter"1051#define OVS_METER_MCGROUP "ovs_meter"1052#define OVS_METER_VERSION 0x11053 1054enum ovs_meter_cmd {1055 OVS_METER_CMD_UNSPEC,1056 OVS_METER_CMD_FEATURES, /* Get features supported by the datapath. */1057 OVS_METER_CMD_SET, /* Add or modify a meter. */1058 OVS_METER_CMD_DEL, /* Delete a meter. */1059 OVS_METER_CMD_GET /* Get meter stats. */1060};1061 1062enum ovs_meter_attr {1063 OVS_METER_ATTR_UNSPEC,1064 OVS_METER_ATTR_ID, /* u32 meter ID within datapath. */1065 OVS_METER_ATTR_KBPS, /* No argument. If set, units in kilobits1066 * per second. Otherwise, units in1067 * packets per second.1068 */1069 OVS_METER_ATTR_STATS, /* struct ovs_flow_stats for the meter. */1070 OVS_METER_ATTR_BANDS, /* Nested attributes for meter bands. */1071 OVS_METER_ATTR_USED, /* u64 msecs last used in monotonic time. */1072 OVS_METER_ATTR_CLEAR, /* Flag to clear stats, used. */1073 OVS_METER_ATTR_MAX_METERS, /* u32 number of meters supported. */1074 OVS_METER_ATTR_MAX_BANDS, /* u32 max number of bands per meter. */1075 OVS_METER_ATTR_PAD,1076 __OVS_METER_ATTR_MAX1077};1078 1079#define OVS_METER_ATTR_MAX (__OVS_METER_ATTR_MAX - 1)1080 1081enum ovs_band_attr {1082 OVS_BAND_ATTR_UNSPEC,1083 OVS_BAND_ATTR_TYPE, /* u32 OVS_METER_BAND_TYPE_* constant. */1084 OVS_BAND_ATTR_RATE, /* u32 band rate in meter units (see above). */1085 OVS_BAND_ATTR_BURST, /* u32 burst size in meter units. */1086 OVS_BAND_ATTR_STATS, /* struct ovs_flow_stats for the band. */1087 __OVS_BAND_ATTR_MAX1088};1089 1090#define OVS_BAND_ATTR_MAX (__OVS_BAND_ATTR_MAX - 1)1091 1092enum ovs_meter_band_type {1093 OVS_METER_BAND_TYPE_UNSPEC,1094 OVS_METER_BAND_TYPE_DROP, /* Drop exceeding packets. */1095 __OVS_METER_BAND_TYPE_MAX1096};1097 1098#define OVS_METER_BAND_TYPE_MAX (__OVS_METER_BAND_TYPE_MAX - 1)1099 1100/* Conntrack limit */1101#define OVS_CT_LIMIT_FAMILY "ovs_ct_limit"1102#define OVS_CT_LIMIT_MCGROUP "ovs_ct_limit"1103#define OVS_CT_LIMIT_VERSION 0x11104 1105enum ovs_ct_limit_cmd {1106 OVS_CT_LIMIT_CMD_UNSPEC,1107 OVS_CT_LIMIT_CMD_SET, /* Add or modify ct limit. */1108 OVS_CT_LIMIT_CMD_DEL, /* Delete ct limit. */1109 OVS_CT_LIMIT_CMD_GET /* Get ct limit. */1110};1111 1112enum ovs_ct_limit_attr {1113 OVS_CT_LIMIT_ATTR_UNSPEC,1114 OVS_CT_LIMIT_ATTR_ZONE_LIMIT, /* Nested struct ovs_zone_limit. */1115 __OVS_CT_LIMIT_ATTR_MAX1116};1117 1118#define OVS_CT_LIMIT_ATTR_MAX (__OVS_CT_LIMIT_ATTR_MAX - 1)1119 1120#define OVS_ZONE_LIMIT_DEFAULT_ZONE -11121 1122struct ovs_zone_limit {1123 int zone_id;1124 __u32 limit;1125 __u32 count;1126};1127 1128enum ovs_dec_ttl_attr {1129 OVS_DEC_TTL_ATTR_UNSPEC,1130 OVS_DEC_TTL_ATTR_ACTION, /* Nested struct nlattr */1131 __OVS_DEC_TTL_ATTR_MAX1132};1133 1134#define OVS_DEC_TTL_ATTR_MAX (__OVS_DEC_TTL_ATTR_MAX - 1)1135 1136#endif /* _LINUX_OPENVSWITCH_H */1137