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_UNUSED1,
178 OVS_PACKET_ATTR_UNUSED2,
179 OVS_PACKET_ATTR_PROBE, /* Packet operation is a feature probe,
180 error logging should be suppressed. */
181 __OVS_PACKET_ATTR_MAX
184 #define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)
188 #define OVS_VPORT_FAMILY "ovs_vport"
189 #define OVS_VPORT_MCGROUP "ovs_vport"
190 #define OVS_VPORT_VERSION 0x1
193 OVS_VPORT_CMD_UNSPEC,
200 enum ovs_vport_type {
201 OVS_VPORT_TYPE_UNSPEC,
202 OVS_VPORT_TYPE_NETDEV, /* network device */
203 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
204 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */
205 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */
206 OVS_VPORT_TYPE_GENEVE, /* Geneve tunnel. */
210 #define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)
213 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.
214 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.
215 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type
217 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device
218 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes
219 * plus a null terminator.
220 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.
221 * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace
222 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets
223 * received on this port. If this is a single-element array of value 0,
224 * upcalls should not be sent.
225 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for
226 * packets sent or received through the vport.
228 * These attributes follow the &struct ovs_header within the Generic Netlink
229 * payload for %OVS_VPORT_* commands.
231 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and
232 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is
233 * optional; if not specified a free port number is automatically selected.
234 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type
237 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to
238 * look up the vport to operate on; otherwise dp_idx from the &struct
239 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport.
241 enum ovs_vport_attr {
242 OVS_VPORT_ATTR_UNSPEC,
243 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */
244 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */
245 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */
246 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
247 OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */
248 /* receiving upcalls */
249 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */
253 #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)
255 /* OVS_VPORT_ATTR_OPTIONS attributes for tunnels.
258 OVS_TUNNEL_ATTR_UNSPEC,
259 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */
260 __OVS_TUNNEL_ATTR_MAX
263 #define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1)
267 #define OVS_FLOW_FAMILY "ovs_flow"
268 #define OVS_FLOW_MCGROUP "ovs_flow"
269 #define OVS_FLOW_VERSION 0x1
279 struct ovs_flow_stats {
280 __u64 n_packets; /* Number of matched packets. */
281 __u64 n_bytes; /* Number of matched bytes. */
286 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */
287 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */
288 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */
289 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */
290 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */
291 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */
292 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */
293 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */
294 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */
295 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */
296 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */
297 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */
298 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */
299 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */
300 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */
301 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */
302 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */
303 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */
304 OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash
305 is not computed by the datapath. */
306 OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */
307 OVS_KEY_ATTR_MPLS, /* array of struct ovs_key_mpls.
308 * The implementation may restrict
309 * the accepted length of the array. */
312 OVS_KEY_ATTR_TUNNEL_INFO, /* struct ovs_tunnel_info */
317 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)
319 enum ovs_tunnel_key_attr {
320 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */
321 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */
322 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */
323 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */
324 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */
325 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */
326 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */
327 OVS_TUNNEL_KEY_ATTR_OAM, /* No argument. OAM frame. */
328 OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, /* Array of Geneve options. */
329 OVS_TUNNEL_KEY_ATTR_TP_SRC, /* be16 src Transport Port. */
330 OVS_TUNNEL_KEY_ATTR_TP_DST, /* be16 dst Transport Port. */
331 __OVS_TUNNEL_KEY_ATTR_MAX
334 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1)
337 * enum ovs_frag_type - IPv4 and IPv6 fragment type
338 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment.
339 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.
340 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.
342 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct
352 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)
354 struct ovs_key_ethernet {
355 __u8 eth_src[ETH_ALEN];
356 __u8 eth_dst[ETH_ALEN];
359 struct ovs_key_mpls {
363 struct ovs_key_ipv4 {
369 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */
372 struct ovs_key_ipv6 {
375 __be32 ipv6_label; /* 20-bits in least-significant bits. */
379 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */
392 struct ovs_key_sctp {
397 struct ovs_key_icmp {
402 struct ovs_key_icmpv6 {
411 __u8 arp_sha[ETH_ALEN];
412 __u8 arp_tha[ETH_ALEN];
417 __u8 nd_sll[ETH_ALEN];
418 __u8 nd_tll[ETH_ALEN];
422 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands.
423 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow
424 * key. Always present in notifications. Required for all requests (except
426 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying
427 * the actions to take for packets that match the key. Always present in
428 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
429 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without
430 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions,
431 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given.
432 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this
433 * flow. Present in notifications if the stats would be nonzero. Ignored in
435 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the
436 * TCP flags seen on packets in this flow. Only present in notifications for
437 * TCP flows, and only if it would be nonzero. Ignored in requests.
438 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on
439 * the system monotonic clock, at which a packet was last processed for this
440 * flow. Only present in notifications if a packet has been processed for this
441 * flow. Ignored in requests.
442 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the
443 * last-used time, accumulated TCP flags, and statistics for this flow.
444 * Otherwise ignored in requests. Never present in notifications.
445 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the
446 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact
447 * match with corresponding flow key bit, while mask bit value '0' specifies
448 * a wildcarded match. Omitting attribute is treated as wildcarding all
449 * corresponding fields. Optional for all requests. If not present,
450 * all flow key bits are exact match bits.
452 * These attributes follow the &struct ovs_header within the Generic Netlink
453 * payload for %OVS_FLOW_* commands.
456 OVS_FLOW_ATTR_UNSPEC,
457 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */
458 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
459 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */
460 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */
461 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */
462 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */
463 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */
464 OVS_FLOW_ATTR_PROBE, /* Flow operation is a feature probe, error
465 * logging should be suppressed. */
469 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)
472 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action.
473 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with
474 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of
475 * %UINT32_MAX samples all packets and intermediate values sample intermediate
476 * fractions of packets.
477 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event.
478 * Actions are passed as nested attributes.
480 * Executes the specified actions with the given probability on a per-packet
483 enum ovs_sample_attr {
484 OVS_SAMPLE_ATTR_UNSPEC,
485 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */
486 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
487 __OVS_SAMPLE_ATTR_MAX,
490 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)
493 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.
494 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION
495 * message should be sent. Required.
496 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is
497 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA.
498 * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get
501 enum ovs_userspace_attr {
502 OVS_USERSPACE_ATTR_UNSPEC,
503 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */
504 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */
505 OVS_USERSPACE_ATTR_EGRESS_TUN_PORT, /* Optional, u32 output port
506 * to get tunnel info. */
507 __OVS_USERSPACE_ATTR_MAX
510 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)
513 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument.
514 * @mpls_lse: MPLS label stack entry to push.
515 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame.
517 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and
518 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected.
520 struct ovs_action_push_mpls {
522 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */
526 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument.
527 * @vlan_tpid: Tag protocol identifier (TPID) to push.
528 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set
529 * (but it will not be set in the 802.1Q header that is pushed).
531 * The @vlan_tpid value is typically %ETH_P_8021Q. The only acceptable TPID
532 * values are those that the kernel module also parses as 802.1Q headers, to
533 * prevent %OVS_ACTION_ATTR_PUSH_VLAN followed by %OVS_ACTION_ATTR_POP_VLAN
534 * from having surprising results.
536 struct ovs_action_push_vlan {
537 __be16 vlan_tpid; /* 802.1Q TPID. */
538 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */
541 /* Data path hash algorithm for computing Datapath hash.
543 * The algorithm type only specifies the fields in a flow
544 * will be used as part of the hash. Each datapath is free
545 * to use its own hash algorithm. The hash value will be
546 * opaque to the user space daemon.
553 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument.
554 * @hash_alg: Algorithm used to compute hash prior to recirculation.
555 * @hash_basis: basis used for computing hash.
557 struct ovs_action_hash {
558 uint32_t hash_alg; /* One of ovs_hash_alg. */
563 * enum ovs_action_attr - Action types.
565 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port.
566 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested
567 * %OVS_USERSPACE_ATTR_* attributes.
568 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The
569 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its
571 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q header onto the
573 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q header off the packet.
574 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
575 * the nested %OVS_SAMPLE_ATTR_* attributes.
576 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the
577 * top of the packets MPLS label stack. Set the ethertype of the
578 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to
579 * indicate the new packet contents.
580 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the
581 * packet's MPLS label stack. Set the encapsulating frame's ethertype to
582 * indicate the new packet contents. This could potentially still be
583 * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there
584 * is no MPLS label stack, as determined by ethertype, no action is taken.
586 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
587 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment
588 * type may not be changed.
591 enum ovs_action_attr {
592 OVS_ACTION_ATTR_UNSPEC,
593 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */
594 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */
595 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */
596 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */
597 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */
598 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
599 OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */
600 OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */
601 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */
602 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */
604 __OVS_ACTION_ATTR_MAX
607 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
609 #endif /* _LINUX_OPENVSWITCH_H */