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40 #ifndef _LINUX_OPENVSWITCH_H
41 #define _LINUX_OPENVSWITCH_H 1
43 #include <linux/types.h>
44 #include <linux/if_ether.h>
47 * struct ovs_header - header for OVS Generic Netlink messages.
48 * @dp_ifindex: ifindex of local port for datapath (0 to make a request not
49 * specific to a datapath).
51 * Attributes following the header are specific to a particular OVS Generic
52 * Netlink family, but all of the OVS families use this header.
61 #define OVS_DATAPATH_FAMILY "ovs_datapath"
62 #define OVS_DATAPATH_MCGROUP "ovs_datapath"
65 * - API users are expected to provide OVS_DP_ATTR_USER_FEATURES
66 * when creating the datapath.
68 #define OVS_DATAPATH_VERSION 2
70 /* First OVS datapath version to support features */
71 #define OVS_DP_VER_FEATURES 2
73 enum ovs_datapath_cmd {
82 * enum ovs_datapath_attr - attributes for %OVS_DP_* commands.
83 * @OVS_DP_ATTR_NAME: Name of the network device that serves as the "local
84 * port". This is the name of the network device whose dp_ifindex is given in
85 * the &struct ovs_header. Always present in notifications. Required in
86 * %OVS_DP_NEW requests. May be used as an alternative to specifying
87 * dp_ifindex in other requests (with a dp_ifindex of 0).
88 * @OVS_DP_ATTR_UPCALL_PID: The Netlink socket in userspace that is initially
89 * set on the datapath port (for OVS_ACTION_ATTR_MISS). Only valid on
90 * %OVS_DP_CMD_NEW requests. A value of zero indicates that upcalls should
92 * @OVS_DP_ATTR_STATS: Statistics about packets that have passed through the
93 * datapath. Always present in notifications.
94 * @OVS_DP_ATTR_MEGAFLOW_STATS: Statistics about mega flow masks usage for the
95 * datapath. Always present in notifications.
97 * These attributes follow the &struct ovs_header within the Generic Netlink
98 * payload for %OVS_DP_* commands.
100 enum ovs_datapath_attr {
102 OVS_DP_ATTR_NAME, /* name of dp_ifindex netdev */
103 OVS_DP_ATTR_UPCALL_PID, /* Netlink PID to receive upcalls */
104 OVS_DP_ATTR_STATS, /* struct ovs_dp_stats */
105 OVS_DP_ATTR_MEGAFLOW_STATS, /* struct ovs_dp_megaflow_stats */
106 OVS_DP_ATTR_USER_FEATURES, /* OVS_DP_F_* */
110 #define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1)
112 /* All 64-bit integers within Netlink messages are 4-byte aligned only. */
113 struct ovs_dp_stats {
114 __u64 n_hit; /* Number of flow table matches. */
115 __u64 n_missed; /* Number of flow table misses. */
116 __u64 n_lost; /* Number of misses not sent to userspace. */
117 __u64 n_flows; /* Number of flows present */
120 struct ovs_dp_megaflow_stats {
121 __u64 n_mask_hit; /* Number of masks used for flow lookups. */
122 __u32 n_masks; /* Number of masks for the datapath. */
123 __u32 pad0; /* Pad for future expension. */
124 __u64 pad1; /* Pad for future expension. */
125 __u64 pad2; /* Pad for future expension. */
128 struct ovs_vport_stats {
129 __u64 rx_packets; /* total packets received */
130 __u64 tx_packets; /* total packets transmitted */
131 __u64 rx_bytes; /* total bytes received */
132 __u64 tx_bytes; /* total bytes transmitted */
133 __u64 rx_errors; /* bad packets received */
134 __u64 tx_errors; /* packet transmit problems */
135 __u64 rx_dropped; /* no space in linux buffers */
136 __u64 tx_dropped; /* no space available in linux */
139 /* Allow last Netlink attribute to be unaligned */
140 #define OVS_DP_F_UNALIGNED (1 << 0)
142 /* Allow datapath to associate multiple Netlink PIDs to each vport */
143 #define OVS_DP_F_VPORT_PIDS (1 << 1)
145 /* Fixed logical ports. */
146 #define OVSP_LOCAL ((__u32)0)
148 /* Packet transfer. */
150 #define OVS_PACKET_FAMILY "ovs_packet"
151 #define OVS_PACKET_VERSION 0x1
153 enum ovs_packet_cmd {
154 OVS_PACKET_CMD_UNSPEC,
156 /* Kernel-to-user notifications. */
157 OVS_PACKET_CMD_MISS, /* Flow table miss. */
158 OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */
160 /* Userspace commands. */
161 OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */
165 * enum ovs_packet_attr - attributes for %OVS_PACKET_* commands.
166 * @OVS_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire
167 * packet as received, from the start of the Ethernet header onward. For
168 * %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by
169 * actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is
170 * the flow key extracted from the packet as originally received.
171 * @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key
172 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows
173 * userspace to adapt its flow setup strategy by comparing its notion of the
174 * flow key against the kernel's. When used with %OVS_PACKET_CMD_EXECUTE, only
175 * metadata key fields (e.g. priority, skb mark) are honored. All the packet
176 * header fields are parsed from the packet instead.
177 * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used
178 * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes.
179 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION
180 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an
181 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content
183 * @OVS_PACKET_ATTR_EGRESS_TUN_KEY: Present for an %OVS_PACKET_CMD_ACTION
184 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an
185 * %OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute, which is sent only if the
186 * output port is actually a tunnel port. Contains the output tunnel key
187 * extracted from the packet as nested %OVS_TUNNEL_KEY_ATTR_* attributes.
189 * These attributes follow the &struct ovs_header within the Generic Netlink
190 * payload for %OVS_PACKET_* commands.
192 enum ovs_packet_attr {
193 OVS_PACKET_ATTR_UNSPEC,
194 OVS_PACKET_ATTR_PACKET, /* Packet data. */
195 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */
196 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
197 OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */
198 OVS_PACKET_ATTR_EGRESS_TUN_KEY, /* Nested OVS_TUNNEL_KEY_ATTR_*
200 __OVS_PACKET_ATTR_MAX
203 #define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)
207 #define OVS_VPORT_FAMILY "ovs_vport"
208 #define OVS_VPORT_MCGROUP "ovs_vport"
209 #define OVS_VPORT_VERSION 0x1
212 OVS_VPORT_CMD_UNSPEC,
219 enum ovs_vport_type {
220 OVS_VPORT_TYPE_UNSPEC,
221 OVS_VPORT_TYPE_NETDEV, /* network device */
222 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
223 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */
224 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel */
225 OVS_VPORT_TYPE_GENEVE = 6, /* Geneve tunnel */
226 OVS_VPORT_TYPE_GRE64 = 104, /* GRE tunnel with 64-bit keys */
227 OVS_VPORT_TYPE_LISP = 105, /* LISP tunnel */
231 #define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)
234 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.
235 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.
236 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type
238 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device
239 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes
240 * plus a null terminator.
241 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.
242 * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace
243 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets
244 * received on this port. If this is a single-element array of value 0,
245 * upcalls should not be sent.
246 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for
247 * packets sent or received through the vport.
249 * These attributes follow the &struct ovs_header within the Generic Netlink
250 * payload for %OVS_VPORT_* commands.
252 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and
253 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is
254 * optional; if not specified a free port number is automatically selected.
255 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type
256 * of vport. %OVS_VPORT_ATTR_STATS is optional and other attributes are
259 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to
260 * look up the vport to operate on; otherwise dp_idx from the &struct
261 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport.
263 enum ovs_vport_attr {
264 OVS_VPORT_ATTR_UNSPEC,
265 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */
266 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */
267 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */
268 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
269 OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */
270 /* receiving upcalls */
271 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */
275 #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)
277 /* OVS_VPORT_ATTR_OPTIONS attributes for tunnels.
280 OVS_TUNNEL_ATTR_UNSPEC,
281 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */
282 __OVS_TUNNEL_ATTR_MAX
285 #define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1)
289 #define OVS_FLOW_FAMILY "ovs_flow"
290 #define OVS_FLOW_MCGROUP "ovs_flow"
291 #define OVS_FLOW_VERSION 0x1
301 struct ovs_flow_stats {
302 __u64 n_packets; /* Number of matched packets. */
303 __u64 n_bytes; /* Number of matched bytes. */
308 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */
309 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */
310 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */
311 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */
312 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */
313 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */
314 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */
315 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */
316 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */
317 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */
318 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */
319 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */
320 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */
321 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */
322 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */
323 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */
324 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */
325 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */
326 OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash
327 is not computed by the datapath. */
328 OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */
329 OVS_KEY_ATTR_MPLS, /* array of struct ovs_key_mpls.
330 * The implementation may restrict
331 * the accepted length of the array. */
334 /* Only used within kernel data path. */
335 OVS_KEY_ATTR_TUNNEL_INFO, /* struct ovs_tunnel_info */
340 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)
342 enum ovs_tunnel_key_attr {
343 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */
344 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */
345 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */
346 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */
347 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */
348 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */
349 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */
350 OVS_TUNNEL_KEY_ATTR_OAM, /* No argument, OAM frame. */
351 OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, /* Array of Geneve options */
352 OVS_TUNNEL_KEY_ATTR_TP_SRC, /* be16 src Transport Port. */
353 OVS_TUNNEL_KEY_ATTR_TP_DST, /* be16 dst Transport Port. */
354 __OVS_TUNNEL_KEY_ATTR_MAX
356 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1)
359 * enum ovs_frag_type - IPv4 and IPv6 fragment type
360 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment.
361 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.
362 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.
364 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct
374 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)
376 struct ovs_key_ethernet {
377 __u8 eth_src[ETH_ALEN];
378 __u8 eth_dst[ETH_ALEN];
381 struct ovs_key_mpls {
385 struct ovs_key_ipv4 {
391 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */
394 struct ovs_key_ipv6 {
397 __be32 ipv6_label; /* 20-bits in least-significant bits. */
401 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */
414 struct ovs_key_sctp {
419 struct ovs_key_icmp {
424 struct ovs_key_icmpv6 {
433 __u8 arp_sha[ETH_ALEN];
434 __u8 arp_tha[ETH_ALEN];
439 __u8 nd_sll[ETH_ALEN];
440 __u8 nd_tll[ETH_ALEN];
444 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands.
445 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow
446 * key. Always present in notifications. Required for all requests (except
448 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying
449 * the actions to take for packets that match the key. Always present in
450 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
451 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without
452 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions,
453 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given.
454 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this
455 * flow. Present in notifications if the stats would be nonzero. Ignored in
457 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the
458 * TCP flags seen on packets in this flow. Only present in notifications for
459 * TCP flows, and only if it would be nonzero. Ignored in requests.
460 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on
461 * the system monotonic clock, at which a packet was last processed for this
462 * flow. Only present in notifications if a packet has been processed for this
463 * flow. Ignored in requests.
464 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the
465 * last-used time, accumulated TCP flags, and statistics for this flow.
466 * Otherwise ignored in requests. Never present in notifications.
467 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the
468 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact
469 * match with corresponding flow key bit, while mask bit value '0' specifies
470 * a wildcarded match. Omitting attribute is treated as wildcarding all
471 * corresponding fields. Optional for all requests. If not present,
472 * all flow key bits are exact match bits.
474 * These attributes follow the &struct ovs_header within the Generic Netlink
475 * payload for %OVS_FLOW_* commands.
478 OVS_FLOW_ATTR_UNSPEC,
479 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */
480 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
481 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */
482 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */
483 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */
484 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */
485 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */
489 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)
492 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action.
493 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with
494 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of
495 * %UINT32_MAX samples all packets and intermediate values sample intermediate
496 * fractions of packets.
497 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event.
498 * Actions are passed as nested attributes.
500 * Executes the specified actions with the given probability on a per-packet
503 enum ovs_sample_attr {
504 OVS_SAMPLE_ATTR_UNSPEC,
505 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */
506 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
507 __OVS_SAMPLE_ATTR_MAX,
510 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)
513 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.
514 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION
515 * message should be sent. Required.
516 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is
517 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA.
518 * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get
521 enum ovs_userspace_attr {
522 OVS_USERSPACE_ATTR_UNSPEC,
523 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */
524 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */
525 OVS_USERSPACE_ATTR_EGRESS_TUN_PORT, /* Optional, u32 output port
526 * to get tunnel info. */
527 __OVS_USERSPACE_ATTR_MAX
530 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)
533 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument.
534 * @mpls_lse: MPLS label stack entry to push.
535 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame.
537 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and
538 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected.
540 struct ovs_action_push_mpls {
542 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */
546 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument.
547 * @vlan_tpid: Tag protocol identifier (TPID) to push.
548 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set
549 * (but it will not be set in the 802.1Q header that is pushed).
551 * The @vlan_tpid value is typically %ETH_P_8021Q. The only acceptable TPID
552 * values are those that the kernel module also parses as 802.1Q headers, to
553 * prevent %OVS_ACTION_ATTR_PUSH_VLAN followed by %OVS_ACTION_ATTR_POP_VLAN
554 * from having surprising results.
556 struct ovs_action_push_vlan {
557 __be16 vlan_tpid; /* 802.1Q TPID. */
558 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */
561 /* Data path hash algorithm for computing Datapath hash.
563 * The algorithm type only specifies the fields in a flow
564 * will be used as part of the hash. Each datapath is free
565 * to use its own hash algorithm. The hash value will be
566 * opaque to the user space daemon.
572 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument.
573 * @hash_alg: Algorithm used to compute hash prior to recirculation.
574 * @hash_basis: basis used for computing hash.
576 struct ovs_action_hash {
577 uint32_t hash_alg; /* One of ovs_hash_alg. */
582 * enum ovs_action_attr - Action types.
584 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port.
585 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested
586 * %OVS_USERSPACE_ATTR_* attributes.
587 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q header onto the
589 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q header off the packet.
590 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
591 * the nested %OVS_SAMPLE_ATTR_* attributes.
592 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The
593 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its
595 * @OVS_ACTION_RECIRC: Recirculate within the data path.
596 * @OVS_ACTION_HASH: Compute and set flow hash value.
597 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the
598 * top of the packets MPLS label stack. Set the ethertype of the
599 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to
600 * indicate the new packet contents.
601 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the
602 * packet's MPLS label stack. Set the encapsulating frame's ethertype to
603 * indicate the new packet contents. This could potentially still be
604 * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there
605 * is no MPLS label stack, as determined by ethertype, no action is taken.
607 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
608 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment
609 * type may not be changed.
612 enum ovs_action_attr {
613 OVS_ACTION_ATTR_UNSPEC,
614 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */
615 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */
616 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */
617 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */
618 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */
619 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
620 OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */
621 OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */
622 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */
623 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */
624 __OVS_ACTION_ATTR_MAX
627 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
629 #endif /* _LINUX_OPENVSWITCH_H */