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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"
63 #define OVS_DATAPATH_VERSION 0x1
65 enum ovs_datapath_cmd {
74 * enum ovs_datapath_attr - attributes for %OVS_DP_* commands.
75 * @OVS_DP_ATTR_NAME: Name of the network device that serves as the "local
76 * port". This is the name of the network device whose dp_ifindex is given in
77 * the &struct ovs_header. Always present in notifications. Required in
78 * %OVS_DP_NEW requests. May be used as an alternative to specifying
79 * dp_ifindex in other requests (with a dp_ifindex of 0).
80 * @OVS_DP_ATTR_UPCALL_PID: The Netlink socket in userspace that is initially
81 * set on the datapath port (for OVS_ACTION_ATTR_MISS). Only valid on
82 * %OVS_DP_CMD_NEW requests. A value of zero indicates that upcalls should
84 * @OVS_DP_ATTR_STATS: Statistics about packets that have passed through the
85 * datapath. Always present in notifications.
86 * @OVS_DP_ATTR_MEGAFLOW_STATS: Statistics about mega flow masks usage for the
87 * datapath. Always present in notifications.
89 * These attributes follow the &struct ovs_header within the Generic Netlink
90 * payload for %OVS_DP_* commands.
92 enum ovs_datapath_attr {
94 OVS_DP_ATTR_NAME, /* name of dp_ifindex netdev */
95 OVS_DP_ATTR_UPCALL_PID, /* Netlink PID to receive upcalls */
96 OVS_DP_ATTR_STATS, /* struct ovs_dp_stats */
97 OVS_DP_ATTR_MEGAFLOW_STATS, /* struct ovs_dp_megaflow_stats */
101 #define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1)
103 struct 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 */
110 struct 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 pad1; /* Pad for future expension. */
115 __u64 pad2; /* Pad for future expension. */
118 struct 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 */
129 /* Fixed logical ports. */
130 #define OVSP_LOCAL ((__u32)0)
132 /* Packet transfer. */
134 #define OVS_PACKET_FAMILY "ovs_packet"
135 #define OVS_PACKET_VERSION 0x1
137 enum ovs_packet_cmd {
138 OVS_PACKET_CMD_UNSPEC,
140 /* Kernel-to-user notifications. */
141 OVS_PACKET_CMD_MISS, /* Flow table miss. */
142 OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */
144 /* Userspace commands. */
145 OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */
149 * enum ovs_packet_attr - attributes for %OVS_PACKET_* commands.
150 * @OVS_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire
151 * packet as received, from the start of the Ethernet header onward. For
152 * %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by
153 * actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is
154 * the flow key extracted from the packet as originally received.
155 * @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key
156 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows
157 * userspace to adapt its flow setup strategy by comparing its notion of the
158 * flow key against the kernel's.
159 * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used
160 * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes.
161 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION
162 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an
163 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content
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_MAX
178 #define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)
182 #define OVS_VPORT_FAMILY "ovs_vport"
183 #define OVS_VPORT_MCGROUP "ovs_vport"
184 #define OVS_VPORT_VERSION 0x1
187 OVS_VPORT_CMD_UNSPEC,
194 enum ovs_vport_type {
195 OVS_VPORT_TYPE_UNSPEC,
196 OVS_VPORT_TYPE_NETDEV, /* network device */
197 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
198 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */
199 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel */
200 OVS_VPORT_TYPE_GRE64 = 104, /* GRE tunnel with 64-bit keys */
201 OVS_VPORT_TYPE_LISP = 105, /* LISP tunnel */
205 #define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)
208 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.
209 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.
210 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type
212 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device
213 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes
214 * plus a null terminator.
215 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.
216 * @OVS_VPORT_ATTR_UPCALL_PID: The Netlink socket in userspace that
217 * OVS_PACKET_CMD_MISS upcalls will be directed to for packets received on
218 * this port. A value of zero indicates that upcalls should not be sent.
219 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for
220 * packets sent or received through the vport.
222 * These attributes follow the &struct ovs_header within the Generic Netlink
223 * payload for %OVS_VPORT_* commands.
225 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and
226 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is
227 * optional; if not specified a free port number is automatically selected.
228 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type
229 * of vport. %OVS_VPORT_ATTR_STATS is optional and other attributes are
232 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to
233 * look up the vport to operate on; otherwise dp_idx from the &struct
234 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport.
236 enum ovs_vport_attr {
237 OVS_VPORT_ATTR_UNSPEC,
238 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */
239 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */
240 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */
241 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
242 OVS_VPORT_ATTR_UPCALL_PID, /* u32 Netlink PID to receive upcalls */
243 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */
247 #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)
249 /* OVS_VPORT_ATTR_OPTIONS attributes for tunnels.
252 OVS_TUNNEL_ATTR_UNSPEC,
253 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */
254 __OVS_TUNNEL_ATTR_MAX
257 #define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1)
261 #define OVS_FLOW_FAMILY "ovs_flow"
262 #define OVS_FLOW_MCGROUP "ovs_flow"
263 #define OVS_FLOW_VERSION 0x1
273 struct ovs_flow_stats {
274 __u64 n_packets; /* Number of matched packets. */
275 __u64 n_bytes; /* Number of matched bytes. */
280 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */
281 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */
282 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */
283 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */
284 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */
285 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */
286 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */
287 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */
288 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */
289 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */
290 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */
291 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */
292 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */
293 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */
294 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */
295 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */
296 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */
297 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */
300 OVS_KEY_ATTR_IPV4_TUNNEL, /* struct ovs_key_ipv4_tunnel */
303 OVS_KEY_ATTR_MPLS = 62, /* array of struct ovs_key_mpls.
304 * The implementation may restrict
305 * the accepted length of the array. */
309 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)
311 enum ovs_tunnel_key_attr {
312 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */
313 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */
314 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */
315 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */
316 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */
317 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */
318 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */
319 __OVS_TUNNEL_KEY_ATTR_MAX
322 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1)
325 * enum ovs_frag_type - IPv4 and IPv6 fragment type
326 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment.
327 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.
328 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.
330 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct
340 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)
342 struct ovs_key_ethernet {
343 __u8 eth_src[ETH_ALEN];
344 __u8 eth_dst[ETH_ALEN];
347 struct ovs_key_mpls {
351 struct ovs_key_ipv4 {
357 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */
360 struct ovs_key_ipv6 {
363 __be32 ipv6_label; /* 20-bits in least-significant bits. */
367 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */
380 struct ovs_key_sctp {
385 struct ovs_key_icmp {
390 struct ovs_key_icmpv6 {
399 __u8 arp_sha[ETH_ALEN];
400 __u8 arp_tha[ETH_ALEN];
405 __u8 nd_sll[ETH_ALEN];
406 __u8 nd_tll[ETH_ALEN];
410 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands.
411 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow
412 * key. Always present in notifications. Required for all requests (except
414 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying
415 * the actions to take for packets that match the key. Always present in
416 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
417 * %OVS_FLOW_CMD_SET requests.
418 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this
419 * flow. Present in notifications if the stats would be nonzero. Ignored in
421 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the
422 * TCP flags seen on packets in this flow. Only present in notifications for
423 * TCP flows, and only if it would be nonzero. Ignored in requests.
424 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on
425 * the system monotonic clock, at which a packet was last processed for this
426 * flow. Only present in notifications if a packet has been processed for this
427 * flow. Ignored in requests.
428 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the
429 * last-used time, accumulated TCP flags, and statistics for this flow.
430 * Otherwise ignored in requests. Never present in notifications.
431 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the
432 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact
433 * match with corresponding flow key bit, while mask bit value '0' specifies
434 * a wildcarded match. Omitting attribute is treated as wildcarding all
435 * corresponding fields. Optional for all requests. If not present,
436 * all flow key bits are exact match bits.
438 * These attributes follow the &struct ovs_header within the Generic Netlink
439 * payload for %OVS_FLOW_* commands.
442 OVS_FLOW_ATTR_UNSPEC,
443 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */
444 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
445 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */
446 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */
447 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */
448 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */
449 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */
453 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)
456 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action.
457 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with
458 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of
459 * %UINT32_MAX samples all packets and intermediate values sample intermediate
460 * fractions of packets.
461 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event.
462 * Actions are passed as nested attributes.
464 * Executes the specified actions with the given probability on a per-packet
467 enum ovs_sample_attr {
468 OVS_SAMPLE_ATTR_UNSPEC,
469 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */
470 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
471 __OVS_SAMPLE_ATTR_MAX,
474 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)
477 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.
478 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION
479 * message should be sent. Required.
480 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is
481 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA.
483 enum ovs_userspace_attr {
484 OVS_USERSPACE_ATTR_UNSPEC,
485 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */
486 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */
487 __OVS_USERSPACE_ATTR_MAX
490 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)
493 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument.
494 * @mpls_lse: MPLS label stack entry to push.
495 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame.
497 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and
498 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected.
500 struct ovs_action_push_mpls {
502 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */
506 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument.
507 * @vlan_tpid: Tag protocol identifier (TPID) to push.
508 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set
509 * (but it will not be set in the 802.1Q header that is pushed).
511 * The @vlan_tpid value is typically %ETH_P_8021Q. The only acceptable TPID
512 * values are those that the kernel module also parses as 802.1Q headers, to
513 * prevent %OVS_ACTION_ATTR_PUSH_VLAN followed by %OVS_ACTION_ATTR_POP_VLAN
514 * from having surprising results.
516 struct ovs_action_push_vlan {
517 __be16 vlan_tpid; /* 802.1Q TPID. */
518 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */
522 * enum ovs_action_attr - Action types.
524 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port.
525 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested
526 * %OVS_USERSPACE_ATTR_* attributes.
527 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q header onto the
529 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q header off the packet.
530 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
531 * the nested %OVS_SAMPLE_ATTR_* attributes.
532 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The
533 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its
535 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the
536 * top of the packets MPLS label stack. Set the ethertype of the
537 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to
538 * indicate the new packet contents.
539 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the
540 * packet's MPLS label stack. Set the encapsulating frame's ethertype to
541 * indicate the new packet contents This could potentially still be
542 * %ETH_P_MPLS_* if the resulting MPLS label stack is not empty. If there
543 * is no MPLS label stack, as determined by ethertype, no action is taken.
545 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
546 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment
547 * type may not be changed.
550 enum ovs_action_attr {
551 OVS_ACTION_ATTR_UNSPEC,
552 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */
553 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */
554 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */
555 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */
556 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */
557 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
558 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */
559 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */
560 __OVS_ACTION_ATTR_MAX
563 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
565 #endif /* _LINUX_OPENVSWITCH_H */