3 * Copyright (c) 2007-2013 Nicira, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 #ifndef _UAPI__LINUX_OPENVSWITCH_H
21 #define _UAPI__LINUX_OPENVSWITCH_H 1
23 #include <linux/types.h>
24 #include <linux/if_ether.h>
27 * struct ovs_header - header for OVS Generic Netlink messages.
28 * @dp_ifindex: ifindex of local port for datapath (0 to make a request not
29 * specific to a datapath).
31 * Attributes following the header are specific to a particular OVS Generic
32 * Netlink family, but all of the OVS families use this header.
41 #define OVS_DATAPATH_FAMILY "ovs_datapath"
42 #define OVS_DATAPATH_MCGROUP "ovs_datapath"
45 * - API users are expected to provide OVS_DP_ATTR_USER_FEATURES
46 * when creating the datapath.
48 #define OVS_DATAPATH_VERSION 2
50 /* First OVS datapath version to support features */
51 #define OVS_DP_VER_FEATURES 2
53 enum ovs_datapath_cmd {
62 * enum ovs_datapath_attr - attributes for %OVS_DP_* commands.
63 * @OVS_DP_ATTR_NAME: Name of the network device that serves as the "local
64 * port". This is the name of the network device whose dp_ifindex is given in
65 * the &struct ovs_header. Always present in notifications. Required in
66 * %OVS_DP_NEW requests. May be used as an alternative to specifying
67 * dp_ifindex in other requests (with a dp_ifindex of 0).
68 * @OVS_DP_ATTR_UPCALL_PID: The Netlink socket in userspace that is initially
69 * set on the datapath port (for OVS_ACTION_ATTR_MISS). Only valid on
70 * %OVS_DP_CMD_NEW requests. A value of zero indicates that upcalls should
72 * @OVS_DP_ATTR_STATS: Statistics about packets that have passed through the
73 * datapath. Always present in notifications.
74 * @OVS_DP_ATTR_MEGAFLOW_STATS: Statistics about mega flow masks usage for the
75 * datapath. Always present in notifications.
77 * These attributes follow the &struct ovs_header within the Generic Netlink
78 * payload for %OVS_DP_* commands.
80 enum ovs_datapath_attr {
82 OVS_DP_ATTR_NAME, /* name of dp_ifindex netdev */
83 OVS_DP_ATTR_UPCALL_PID, /* Netlink PID to receive upcalls */
84 OVS_DP_ATTR_STATS, /* struct ovs_dp_stats */
85 OVS_DP_ATTR_MEGAFLOW_STATS, /* struct ovs_dp_megaflow_stats */
86 OVS_DP_ATTR_USER_FEATURES, /* OVS_DP_F_* */
90 #define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1)
93 __u64 n_hit; /* Number of flow table matches. */
94 __u64 n_missed; /* Number of flow table misses. */
95 __u64 n_lost; /* Number of misses not sent to userspace. */
96 __u64 n_flows; /* Number of flows present */
99 struct ovs_dp_megaflow_stats {
100 __u64 n_mask_hit; /* Number of masks used for flow lookups. */
101 __u32 n_masks; /* Number of masks for the datapath. */
102 __u32 pad0; /* Pad for future expension. */
103 __u64 pad1; /* Pad for future expension. */
104 __u64 pad2; /* Pad for future expension. */
107 struct ovs_vport_stats {
108 __u64 rx_packets; /* total packets received */
109 __u64 tx_packets; /* total packets transmitted */
110 __u64 rx_bytes; /* total bytes received */
111 __u64 tx_bytes; /* total bytes transmitted */
112 __u64 rx_errors; /* bad packets received */
113 __u64 tx_errors; /* packet transmit problems */
114 __u64 rx_dropped; /* no space in linux buffers */
115 __u64 tx_dropped; /* no space available in linux */
118 /* Allow last Netlink attribute to be unaligned */
119 #define OVS_DP_F_UNALIGNED (1 << 0)
121 /* Allow datapath to associate multiple Netlink PIDs to each vport */
122 #define OVS_DP_F_VPORT_PIDS (1 << 1)
124 /* Fixed logical ports. */
125 #define OVSP_LOCAL ((__u32)0)
127 /* Packet transfer. */
129 #define OVS_PACKET_FAMILY "ovs_packet"
130 #define OVS_PACKET_VERSION 0x1
132 enum ovs_packet_cmd {
133 OVS_PACKET_CMD_UNSPEC,
135 /* Kernel-to-user notifications. */
136 OVS_PACKET_CMD_MISS, /* Flow table miss. */
137 OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */
139 /* Userspace commands. */
140 OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */
144 * enum ovs_packet_attr - attributes for %OVS_PACKET_* commands.
145 * @OVS_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire
146 * packet as received, from the start of the Ethernet header onward. For
147 * %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by
148 * actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is
149 * the flow key extracted from the packet as originally received.
150 * @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key
151 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows
152 * userspace to adapt its flow setup strategy by comparing its notion of the
153 * flow key against the kernel's.
154 * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used
155 * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes.
156 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION
157 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an
158 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content
160 * @OVS_PACKET_ATTR_EGRESS_TUN_KEY: Present for an %OVS_PACKET_CMD_ACTION
161 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an
162 * %OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute, which is sent only if the
163 * output port is actually a tunnel port. Contains the output tunnel key
164 * extracted from the packet as nested %OVS_TUNNEL_KEY_ATTR_* attributes.
166 * These attributes follow the &struct ovs_header within the Generic Netlink
167 * payload for %OVS_PACKET_* commands.
169 enum ovs_packet_attr {
170 OVS_PACKET_ATTR_UNSPEC,
171 OVS_PACKET_ATTR_PACKET, /* Packet data. */
172 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */
173 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
174 OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */
175 OVS_PACKET_ATTR_EGRESS_TUN_KEY, /* Nested OVS_TUNNEL_KEY_ATTR_*
177 __OVS_PACKET_ATTR_MAX
180 #define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)
184 #define OVS_VPORT_FAMILY "ovs_vport"
185 #define OVS_VPORT_MCGROUP "ovs_vport"
186 #define OVS_VPORT_VERSION 0x1
189 OVS_VPORT_CMD_UNSPEC,
196 enum ovs_vport_type {
197 OVS_VPORT_TYPE_UNSPEC,
198 OVS_VPORT_TYPE_NETDEV, /* network device */
199 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
200 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */
201 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */
202 OVS_VPORT_TYPE_GENEVE, /* Geneve tunnel. */
206 #define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)
209 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.
210 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.
211 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type
213 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device
214 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes
215 * plus a null terminator.
216 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.
217 * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace
218 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets
219 * received on this port. If this is a single-element array of value 0,
220 * upcalls should not be sent.
221 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for
222 * packets sent or received through the vport.
224 * These attributes follow the &struct ovs_header within the Generic Netlink
225 * payload for %OVS_VPORT_* commands.
227 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and
228 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is
229 * optional; if not specified a free port number is automatically selected.
230 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type
233 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to
234 * look up the vport to operate on; otherwise dp_idx from the &struct
235 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport.
237 enum ovs_vport_attr {
238 OVS_VPORT_ATTR_UNSPEC,
239 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */
240 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */
241 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */
242 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
243 OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */
244 /* receiving upcalls */
245 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */
249 #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)
251 /* OVS_VPORT_ATTR_OPTIONS attributes for tunnels.
254 OVS_TUNNEL_ATTR_UNSPEC,
255 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */
256 __OVS_TUNNEL_ATTR_MAX
259 #define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1)
263 #define OVS_FLOW_FAMILY "ovs_flow"
264 #define OVS_FLOW_MCGROUP "ovs_flow"
265 #define OVS_FLOW_VERSION 0x1
275 struct ovs_flow_stats {
276 __u64 n_packets; /* Number of matched packets. */
277 __u64 n_bytes; /* Number of matched bytes. */
282 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */
283 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */
284 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */
285 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */
286 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */
287 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */
288 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */
289 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */
290 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */
291 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */
292 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */
293 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */
294 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */
295 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */
296 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */
297 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */
298 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */
299 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */
300 OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash
301 is not computed by the datapath. */
302 OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */
303 OVS_KEY_ATTR_MPLS, /* array of struct ovs_key_mpls.
304 * The implementation may restrict
305 * the accepted length of the array. */
308 OVS_KEY_ATTR_TUNNEL_INFO, /* struct ovs_tunnel_info */
313 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)
315 enum ovs_tunnel_key_attr {
316 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */
317 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */
318 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */
319 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */
320 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */
321 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */
322 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */
323 OVS_TUNNEL_KEY_ATTR_OAM, /* No argument. OAM frame. */
324 OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, /* Array of Geneve options. */
325 OVS_TUNNEL_KEY_ATTR_TP_SRC, /* be16 src Transport Port. */
326 OVS_TUNNEL_KEY_ATTR_TP_DST, /* be16 dst Transport Port. */
327 __OVS_TUNNEL_KEY_ATTR_MAX
330 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1)
333 * enum ovs_frag_type - IPv4 and IPv6 fragment type
334 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment.
335 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.
336 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.
338 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct
348 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)
350 struct ovs_key_ethernet {
351 __u8 eth_src[ETH_ALEN];
352 __u8 eth_dst[ETH_ALEN];
355 struct ovs_key_mpls {
359 struct ovs_key_ipv4 {
365 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */
368 struct ovs_key_ipv6 {
371 __be32 ipv6_label; /* 20-bits in least-significant bits. */
375 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */
388 struct ovs_key_sctp {
393 struct ovs_key_icmp {
398 struct ovs_key_icmpv6 {
407 __u8 arp_sha[ETH_ALEN];
408 __u8 arp_tha[ETH_ALEN];
413 __u8 nd_sll[ETH_ALEN];
414 __u8 nd_tll[ETH_ALEN];
418 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands.
419 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow
420 * key. Always present in notifications. Required for all requests (except
422 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying
423 * the actions to take for packets that match the key. Always present in
424 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
425 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without
426 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions,
427 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given.
428 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this
429 * flow. Present in notifications if the stats would be nonzero. Ignored in
431 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the
432 * TCP flags seen on packets in this flow. Only present in notifications for
433 * TCP flows, and only if it would be nonzero. Ignored in requests.
434 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on
435 * the system monotonic clock, at which a packet was last processed for this
436 * flow. Only present in notifications if a packet has been processed for this
437 * flow. Ignored in requests.
438 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the
439 * last-used time, accumulated TCP flags, and statistics for this flow.
440 * Otherwise ignored in requests. Never present in notifications.
441 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the
442 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact
443 * match with corresponding flow key bit, while mask bit value '0' specifies
444 * a wildcarded match. Omitting attribute is treated as wildcarding all
445 * corresponding fields. Optional for all requests. If not present,
446 * all flow key bits are exact match bits.
448 * These attributes follow the &struct ovs_header within the Generic Netlink
449 * payload for %OVS_FLOW_* commands.
452 OVS_FLOW_ATTR_UNSPEC,
453 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */
454 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
455 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */
456 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */
457 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */
458 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */
459 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */
460 OVS_FLOW_ATTR_PROBE, /* Flow operation is a feature probe, error
461 * logging should be suppressed. */
465 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)
468 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action.
469 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with
470 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of
471 * %UINT32_MAX samples all packets and intermediate values sample intermediate
472 * fractions of packets.
473 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event.
474 * Actions are passed as nested attributes.
476 * Executes the specified actions with the given probability on a per-packet
479 enum ovs_sample_attr {
480 OVS_SAMPLE_ATTR_UNSPEC,
481 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */
482 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
483 __OVS_SAMPLE_ATTR_MAX,
486 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)
489 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.
490 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION
491 * message should be sent. Required.
492 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is
493 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA.
494 * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get
497 enum ovs_userspace_attr {
498 OVS_USERSPACE_ATTR_UNSPEC,
499 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */
500 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */
501 OVS_USERSPACE_ATTR_EGRESS_TUN_PORT, /* Optional, u32 output port
502 * to get tunnel info. */
503 __OVS_USERSPACE_ATTR_MAX
506 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)
509 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument.
510 * @mpls_lse: MPLS label stack entry to push.
511 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame.
513 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and
514 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected.
516 struct ovs_action_push_mpls {
518 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */
522 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument.
523 * @vlan_tpid: Tag protocol identifier (TPID) to push.
524 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set
525 * (but it will not be set in the 802.1Q header that is pushed).
527 * The @vlan_tpid value is typically %ETH_P_8021Q. The only acceptable TPID
528 * values are those that the kernel module also parses as 802.1Q headers, to
529 * prevent %OVS_ACTION_ATTR_PUSH_VLAN followed by %OVS_ACTION_ATTR_POP_VLAN
530 * from having surprising results.
532 struct ovs_action_push_vlan {
533 __be16 vlan_tpid; /* 802.1Q TPID. */
534 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */
537 /* Data path hash algorithm for computing Datapath hash.
539 * The algorithm type only specifies the fields in a flow
540 * will be used as part of the hash. Each datapath is free
541 * to use its own hash algorithm. The hash value will be
542 * opaque to the user space daemon.
549 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument.
550 * @hash_alg: Algorithm used to compute hash prior to recirculation.
551 * @hash_basis: basis used for computing hash.
553 struct ovs_action_hash {
554 uint32_t hash_alg; /* One of ovs_hash_alg. */
559 * enum ovs_action_attr - Action types.
561 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port.
562 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested
563 * %OVS_USERSPACE_ATTR_* attributes.
564 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The
565 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its
567 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q header onto the
569 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q header off the packet.
570 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
571 * the nested %OVS_SAMPLE_ATTR_* attributes.
572 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the
573 * top of the packets MPLS label stack. Set the ethertype of the
574 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to
575 * indicate the new packet contents.
576 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the
577 * packet's MPLS label stack. Set the encapsulating frame's ethertype to
578 * indicate the new packet contents. This could potentially still be
579 * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there
580 * is no MPLS label stack, as determined by ethertype, no action is taken.
582 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
583 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment
584 * type may not be changed.
587 enum ovs_action_attr {
588 OVS_ACTION_ATTR_UNSPEC,
589 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */
590 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */
591 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */
592 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */
593 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */
594 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
595 OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */
596 OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */
597 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */
598 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */
600 __OVS_ACTION_ATTR_MAX
603 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
605 #endif /* _LINUX_OPENVSWITCH_H */