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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_UNUSED1,
201 OVS_PACKET_ATTR_UNUSED2,
202 OVS_PACKET_ATTR_PROBE, /* Packet operation is a feature probe,
203 error logging should be suppressed. */
204 __OVS_PACKET_ATTR_MAX
207 #define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)
211 #define OVS_VPORT_FAMILY "ovs_vport"
212 #define OVS_VPORT_MCGROUP "ovs_vport"
213 #define OVS_VPORT_VERSION 0x1
216 OVS_VPORT_CMD_UNSPEC,
223 enum ovs_vport_type {
224 OVS_VPORT_TYPE_UNSPEC,
225 OVS_VPORT_TYPE_NETDEV, /* network device */
226 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
227 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */
228 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */
229 OVS_VPORT_TYPE_GENEVE, /* Geneve tunnel. */
230 OVS_VPORT_TYPE_GRE64 = 104, /* GRE tunnel with 64-bit keys */
231 OVS_VPORT_TYPE_LISP = 105, /* LISP tunnel */
235 #define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)
238 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.
239 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.
240 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type
242 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device
243 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes
244 * plus a null terminator.
245 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.
246 * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace
247 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets
248 * received on this port. If this is a single-element array of value 0,
249 * upcalls should not be sent.
250 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for
251 * packets sent or received through the vport.
253 * These attributes follow the &struct ovs_header within the Generic Netlink
254 * payload for %OVS_VPORT_* commands.
256 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and
257 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is
258 * optional; if not specified a free port number is automatically selected.
259 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type
260 * of vport. %OVS_VPORT_ATTR_STATS is optional and other attributes are
263 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to
264 * look up the vport to operate on; otherwise dp_idx from the &struct
265 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport.
267 enum ovs_vport_attr {
268 OVS_VPORT_ATTR_UNSPEC,
269 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */
270 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */
271 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */
272 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
273 OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */
274 /* receiving upcalls */
275 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */
279 #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)
281 /* OVS_VPORT_ATTR_OPTIONS attributes for tunnels.
284 OVS_TUNNEL_ATTR_UNSPEC,
285 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */
286 __OVS_TUNNEL_ATTR_MAX
289 #define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1)
293 #define OVS_FLOW_FAMILY "ovs_flow"
294 #define OVS_FLOW_MCGROUP "ovs_flow"
295 #define OVS_FLOW_VERSION 0x1
305 struct ovs_flow_stats {
306 __u64 n_packets; /* Number of matched packets. */
307 __u64 n_bytes; /* Number of matched bytes. */
312 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */
313 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */
314 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */
315 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */
316 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */
317 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */
318 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */
319 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */
320 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */
321 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */
322 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */
323 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */
324 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */
325 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */
326 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */
327 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */
328 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */
329 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */
330 OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash
331 is not computed by the datapath. */
332 OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */
333 OVS_KEY_ATTR_MPLS, /* array of struct ovs_key_mpls.
334 * The implementation may restrict
335 * the accepted length of the array. */
338 /* Only used within kernel data path. */
339 OVS_KEY_ATTR_TUNNEL_INFO, /* struct ovs_tunnel_info */
344 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)
346 enum ovs_tunnel_key_attr {
347 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */
348 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */
349 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */
350 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */
351 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */
352 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */
353 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */
354 OVS_TUNNEL_KEY_ATTR_OAM, /* No argument. OAM frame. */
355 OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, /* Array of Geneve options. */
356 OVS_TUNNEL_KEY_ATTR_TP_SRC, /* be16 src Transport Port. */
357 OVS_TUNNEL_KEY_ATTR_TP_DST, /* be16 dst Transport Port. */
358 __OVS_TUNNEL_KEY_ATTR_MAX
361 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1)
364 * enum ovs_frag_type - IPv4 and IPv6 fragment type
365 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment.
366 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.
367 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.
369 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct
379 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)
381 struct ovs_key_ethernet {
382 __u8 eth_src[ETH_ALEN];
383 __u8 eth_dst[ETH_ALEN];
386 struct ovs_key_mpls {
390 struct ovs_key_ipv4 {
396 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */
399 struct ovs_key_ipv6 {
402 __be32 ipv6_label; /* 20-bits in least-significant bits. */
406 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */
419 struct ovs_key_sctp {
424 struct ovs_key_icmp {
429 struct ovs_key_icmpv6 {
438 __u8 arp_sha[ETH_ALEN];
439 __u8 arp_tha[ETH_ALEN];
444 __u8 nd_sll[ETH_ALEN];
445 __u8 nd_tll[ETH_ALEN];
449 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands.
450 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow
451 * key. Always present in notifications. Required for all requests (except
453 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying
454 * the actions to take for packets that match the key. Always present in
455 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
456 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without
457 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions,
458 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given.
459 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this
460 * flow. Present in notifications if the stats would be nonzero. Ignored in
462 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the
463 * TCP flags seen on packets in this flow. Only present in notifications for
464 * TCP flows, and only if it would be nonzero. Ignored in requests.
465 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on
466 * the system monotonic clock, at which a packet was last processed for this
467 * flow. Only present in notifications if a packet has been processed for this
468 * flow. Ignored in requests.
469 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the
470 * last-used time, accumulated TCP flags, and statistics for this flow.
471 * Otherwise ignored in requests. Never present in notifications.
472 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the
473 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact
474 * match with corresponding flow key bit, while mask bit value '0' specifies
475 * a wildcarded match. Omitting attribute is treated as wildcarding all
476 * corresponding fields. Optional for all requests. If not present,
477 * all flow key bits are exact match bits.
478 * @OVS_FLOW_ATTR_UFID: A unique identifier for the flow. Causes the flow to
479 * be indexed by this value rather than the %OVS_FLOW_ATTR_KEY%. Optional
480 * for all requests. Present in notifications if the flow was created with a
482 * @OVS_FLOW_ATTR_UFID_FLAGS: A 32-bit value of OR'd OVS_UFID_F_* flags that
483 * provide alternative semantics for flow installation and retrieval. Optional
486 * These attributes follow the &struct ovs_header within the Generic Netlink
487 * payload for %OVS_FLOW_* commands.
490 OVS_FLOW_ATTR_UNSPEC,
491 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */
492 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
493 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */
494 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */
495 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */
496 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */
497 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */
498 OVS_FLOW_ATTR_PROBE, /* Flow operation is a feature probe, error
499 * logging should be suppressed. */
500 OVS_FLOW_ATTR_UFID, /* Variable length unique flow identifier. */
501 OVS_FLOW_ATTR_UFID_FLAGS,/* u32 of OVS_UFID_F_*. */
505 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)
508 * Omit attributes for notifications.
510 * If a datapath request contains an OVS_UFID_F_OMIT_* flag, then the datapath
511 * may omit the corresponding 'ovs_flow_attr' from the response.
513 #define OVS_UFID_F_OMIT_KEY (1 << 0)
514 #define OVS_UFID_F_OMIT_MASK (1 << 1)
515 #define OVS_UFID_F_OMIT_ACTIONS (1 << 2)
518 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action.
519 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with
520 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of
521 * %UINT32_MAX samples all packets and intermediate values sample intermediate
522 * fractions of packets.
523 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event.
524 * Actions are passed as nested attributes.
526 * Executes the specified actions with the given probability on a per-packet
529 enum ovs_sample_attr {
530 OVS_SAMPLE_ATTR_UNSPEC,
531 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */
532 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
533 __OVS_SAMPLE_ATTR_MAX,
536 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)
539 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.
540 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION
541 * message should be sent. Required.
542 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is
543 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA.
544 * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get
547 enum ovs_userspace_attr {
548 OVS_USERSPACE_ATTR_UNSPEC,
549 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */
550 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */
551 OVS_USERSPACE_ATTR_EGRESS_TUN_PORT, /* Optional, u32 output port
552 * to get tunnel info. */
553 __OVS_USERSPACE_ATTR_MAX
556 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)
559 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument.
560 * @mpls_lse: MPLS label stack entry to push.
561 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame.
563 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and
564 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected.
566 struct ovs_action_push_mpls {
568 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */
572 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument.
573 * @vlan_tpid: Tag protocol identifier (TPID) to push.
574 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set
575 * (but it will not be set in the 802.1Q header that is pushed).
577 * The @vlan_tpid value is typically %ETH_P_8021Q. The only acceptable TPID
578 * values are those that the kernel module also parses as 802.1Q headers, to
579 * prevent %OVS_ACTION_ATTR_PUSH_VLAN followed by %OVS_ACTION_ATTR_POP_VLAN
580 * from having surprising results.
582 struct ovs_action_push_vlan {
583 __be16 vlan_tpid; /* 802.1Q TPID. */
584 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */
587 /* Data path hash algorithm for computing Datapath hash.
589 * The algorithm type only specifies the fields in a flow
590 * will be used as part of the hash. Each datapath is free
591 * to use its own hash algorithm. The hash value will be
592 * opaque to the user space daemon.
599 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument.
600 * @hash_alg: Algorithm used to compute hash prior to recirculation.
601 * @hash_basis: basis used for computing hash.
603 struct ovs_action_hash {
604 uint32_t hash_alg; /* One of ovs_hash_alg. */
609 #define TNL_PUSH_HEADER_SIZE 128
612 * struct ovs_action_push_tnl - %OVS_ACTION_ATTR_TUNNEL_PUSH
613 * @tnl_port: To identify tunnel port to pass header info.
614 * @out_port: Physical port to send encapsulated packet.
615 * @header_len: Length of the header to be pushed.
616 * @tnl_type: This is only required to format this header. Otherwise
617 * ODP layer can not parse %header.
618 * @header: Partial header for the tunnel. Tunnel push action can use
619 * this header to build final header according to actual packet parameters.
621 struct ovs_action_push_tnl {
625 uint32_t tnl_type; /* For logging. */
626 uint8_t header[TNL_PUSH_HEADER_SIZE];
631 * enum ovs_action_attr - Action types.
633 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port.
634 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested
635 * %OVS_USERSPACE_ATTR_* attributes.
636 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q header onto the
638 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q header off the packet.
639 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
640 * the nested %OVS_SAMPLE_ATTR_* attributes.
641 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The
642 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its
644 * @OVS_ACTION_ATTR_SET_MASKED: Replaces the contents of an existing header. A
645 * nested %OVS_KEY_ATTR_* attribute specifies a header to modify, its value,
646 * and a mask. For every bit set in the mask, the corresponding bit value
647 * is copied from the value to the packet header field, rest of the bits are
648 * left unchanged. The non-masked value bits must be passed in as zeroes.
649 * Masking is not supported for the %OVS_KEY_ATTR_TUNNEL attribute.
650 * @OVS_ACTION_RECIRC: Recirculate within the data path.
651 * @OVS_ACTION_HASH: Compute and set flow hash value.
652 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the
653 * top of the packets MPLS label stack. Set the ethertype of the
654 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to
655 * indicate the new packet contents.
656 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the
657 * packet's MPLS label stack. Set the encapsulating frame's ethertype to
658 * indicate the new packet contents. This could potentially still be
659 * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there
660 * is no MPLS label stack, as determined by ethertype, no action is taken.
662 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
663 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment
664 * type may not be changed.
666 * @OVS_ACTION_ATTR_TUNNEL_PUSH: Push tunnel header described by struct
667 * ovs_action_push_tnl.
668 * @OVS_ACTION_ATTR_TUNNEL_POP: Lookup tunnel port by port-no passed and pop
672 enum ovs_action_attr {
673 OVS_ACTION_ATTR_UNSPEC,
674 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */
675 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */
676 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */
677 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */
678 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */
679 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
680 OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */
681 OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */
682 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */
683 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */
684 OVS_ACTION_ATTR_SET_MASKED, /* One nested OVS_KEY_ATTR_* including
685 * data immediately followed by a mask.
686 * The data must be zero for the unmasked
690 OVS_ACTION_ATTR_TUNNEL_PUSH, /* struct ovs_action_push_tnl*/
691 OVS_ACTION_ATTR_TUNNEL_POP, /* u32 port number. */
693 __OVS_ACTION_ATTR_MAX
696 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
698 #endif /* _LINUX_OPENVSWITCH_H */