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 * Also used in upcall when %OVS_ACTION_ATTR_USERSPACE has optional
157 * %OVS_USERSPACE_ATTR_ACTIONS attribute.
158 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION
159 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an
160 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content
162 * @OVS_PACKET_ATTR_EGRESS_TUN_KEY: Present for an %OVS_PACKET_CMD_ACTION
163 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an
164 * %OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute, which is sent only if the
165 * output port is actually a tunnel port. Contains the output tunnel key
166 * extracted from the packet as nested %OVS_TUNNEL_KEY_ATTR_* attributes.
167 * @OVS_PACKET_ATTR_MRU: Present for an %OVS_PACKET_CMD_ACTION and
168 * %OVS_PACKET_ATTR_USERSPACE action specify the Maximum received fragment
171 * These attributes follow the &struct ovs_header within the Generic Netlink
172 * payload for %OVS_PACKET_* commands.
174 enum ovs_packet_attr {
175 OVS_PACKET_ATTR_UNSPEC,
176 OVS_PACKET_ATTR_PACKET, /* Packet data. */
177 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */
178 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
179 OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */
180 OVS_PACKET_ATTR_EGRESS_TUN_KEY, /* Nested OVS_TUNNEL_KEY_ATTR_*
182 OVS_PACKET_ATTR_UNUSED1,
183 OVS_PACKET_ATTR_UNUSED2,
184 OVS_PACKET_ATTR_PROBE, /* Packet operation is a feature probe,
185 error logging should be suppressed. */
186 OVS_PACKET_ATTR_MRU, /* Maximum received IP fragment size. */
187 __OVS_PACKET_ATTR_MAX
190 #define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)
194 #define OVS_VPORT_FAMILY "ovs_vport"
195 #define OVS_VPORT_MCGROUP "ovs_vport"
196 #define OVS_VPORT_VERSION 0x1
199 OVS_VPORT_CMD_UNSPEC,
206 enum ovs_vport_type {
207 OVS_VPORT_TYPE_UNSPEC,
208 OVS_VPORT_TYPE_NETDEV, /* network device */
209 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
210 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */
211 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */
212 OVS_VPORT_TYPE_GENEVE, /* Geneve tunnel. */
216 #define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)
219 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.
220 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.
221 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type
223 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device
224 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes
225 * plus a null terminator.
226 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.
227 * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace
228 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets
229 * received on this port. If this is a single-element array of value 0,
230 * upcalls should not be sent.
231 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for
232 * packets sent or received through the vport.
234 * These attributes follow the &struct ovs_header within the Generic Netlink
235 * payload for %OVS_VPORT_* commands.
237 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and
238 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is
239 * optional; if not specified a free port number is automatically selected.
240 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type
243 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to
244 * look up the vport to operate on; otherwise dp_idx from the &struct
245 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport.
247 enum ovs_vport_attr {
248 OVS_VPORT_ATTR_UNSPEC,
249 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */
250 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */
251 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */
252 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
253 OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */
254 /* receiving upcalls */
255 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */
259 #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)
262 OVS_VXLAN_EXT_UNSPEC,
263 OVS_VXLAN_EXT_GBP, /* Flag or __u32 */
267 #define OVS_VXLAN_EXT_MAX (__OVS_VXLAN_EXT_MAX - 1)
270 /* OVS_VPORT_ATTR_OPTIONS attributes for tunnels.
273 OVS_TUNNEL_ATTR_UNSPEC,
274 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */
275 OVS_TUNNEL_ATTR_EXTENSION,
276 __OVS_TUNNEL_ATTR_MAX
279 #define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1)
283 #define OVS_FLOW_FAMILY "ovs_flow"
284 #define OVS_FLOW_MCGROUP "ovs_flow"
285 #define OVS_FLOW_VERSION 0x1
295 struct ovs_flow_stats {
296 __u64 n_packets; /* Number of matched packets. */
297 __u64 n_bytes; /* Number of matched bytes. */
302 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */
303 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */
304 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */
305 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */
306 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */
307 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */
308 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */
309 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */
310 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */
311 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */
312 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */
313 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */
314 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */
315 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */
316 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */
317 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */
318 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */
319 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */
320 OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash
321 is not computed by the datapath. */
322 OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */
323 OVS_KEY_ATTR_MPLS, /* array of struct ovs_key_mpls.
324 * The implementation may restrict
325 * the accepted length of the array. */
326 OVS_KEY_ATTR_CT_STATE, /* u32 bitmask of OVS_CS_F_* */
327 OVS_KEY_ATTR_CT_ZONE, /* u16 connection tracking zone. */
328 OVS_KEY_ATTR_CT_MARK, /* u32 connection tracking mark */
329 OVS_KEY_ATTR_CT_LABELS, /* 16-octet connection tracking label */
332 OVS_KEY_ATTR_TUNNEL_INFO, /* struct ip_tunnel_info */
337 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)
339 enum ovs_tunnel_key_attr {
340 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */
341 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */
342 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */
343 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */
344 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */
345 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */
346 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */
347 OVS_TUNNEL_KEY_ATTR_OAM, /* No argument. OAM frame. */
348 OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, /* Array of Geneve options. */
349 OVS_TUNNEL_KEY_ATTR_TP_SRC, /* be16 src Transport Port. */
350 OVS_TUNNEL_KEY_ATTR_TP_DST, /* be16 dst Transport Port. */
351 OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS, /* Nested OVS_VXLAN_EXT_* */
352 OVS_TUNNEL_KEY_ATTR_IPV6_SRC, /* struct in6_addr src IPv6 address. */
353 OVS_TUNNEL_KEY_ATTR_IPV6_DST, /* struct in6_addr dst IPv6 address. */
354 __OVS_TUNNEL_KEY_ATTR_MAX
357 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1)
360 * enum ovs_frag_type - IPv4 and IPv6 fragment type
361 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment.
362 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.
363 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.
365 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct
375 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)
377 struct ovs_key_ethernet {
378 __u8 eth_src[ETH_ALEN];
379 __u8 eth_dst[ETH_ALEN];
382 struct ovs_key_mpls {
386 struct ovs_key_ipv4 {
392 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */
395 struct ovs_key_ipv6 {
398 __be32 ipv6_label; /* 20-bits in least-significant bits. */
402 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */
415 struct ovs_key_sctp {
420 struct ovs_key_icmp {
425 struct ovs_key_icmpv6 {
434 __u8 arp_sha[ETH_ALEN];
435 __u8 arp_tha[ETH_ALEN];
440 __u8 nd_sll[ETH_ALEN];
441 __u8 nd_tll[ETH_ALEN];
444 #define OVS_CT_LABELS_LEN 16
445 struct ovs_key_ct_labels {
446 __u8 ct_labels[OVS_CT_LABELS_LEN];
449 /* OVS_KEY_ATTR_CT_STATE flags */
450 #define OVS_CS_F_NEW 0x01 /* Beginning of a new connection. */
451 #define OVS_CS_F_ESTABLISHED 0x02 /* Part of an existing connection. */
452 #define OVS_CS_F_RELATED 0x04 /* Related to an established
454 #define OVS_CS_F_REPLY_DIR 0x08 /* Flow is in the reply direction. */
455 #define OVS_CS_F_INVALID 0x10 /* Could not track connection. */
456 #define OVS_CS_F_TRACKED 0x20 /* Conntrack has occurred. */
457 #define OVS_CS_F_SRC_NAT 0x40 /* Packet's source address/port was
460 #define OVS_CS_F_DST_NAT 0x80 /* Packet's destination address/port
461 * was mangled by NAT.
464 #define OVS_CS_F_NAT_MASK (OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT)
467 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands.
468 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow
469 * key. Always present in notifications. Required for all requests (except
471 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying
472 * the actions to take for packets that match the key. Always present in
473 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
474 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without
475 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions,
476 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given.
477 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this
478 * flow. Present in notifications if the stats would be nonzero. Ignored in
480 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the
481 * TCP flags seen on packets in this flow. Only present in notifications for
482 * TCP flows, and only if it would be nonzero. Ignored in requests.
483 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on
484 * the system monotonic clock, at which a packet was last processed for this
485 * flow. Only present in notifications if a packet has been processed for this
486 * flow. Ignored in requests.
487 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the
488 * last-used time, accumulated TCP flags, and statistics for this flow.
489 * Otherwise ignored in requests. Never present in notifications.
490 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the
491 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact
492 * match with corresponding flow key bit, while mask bit value '0' specifies
493 * a wildcarded match. Omitting attribute is treated as wildcarding all
494 * corresponding fields. Optional for all requests. If not present,
495 * all flow key bits are exact match bits.
496 * @OVS_FLOW_ATTR_UFID: A value between 1-16 octets specifying a unique
497 * identifier for the flow. Causes the flow to be indexed by this value rather
498 * than the value of the %OVS_FLOW_ATTR_KEY attribute. Optional for all
499 * requests. Present in notifications if the flow was created with this
501 * @OVS_FLOW_ATTR_UFID_FLAGS: A 32-bit value of OR'd %OVS_UFID_F_*
502 * flags that provide alternative semantics for flow installation and
503 * retrieval. Optional for all requests.
505 * These attributes follow the &struct ovs_header within the Generic Netlink
506 * payload for %OVS_FLOW_* commands.
509 OVS_FLOW_ATTR_UNSPEC,
510 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */
511 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
512 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */
513 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */
514 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */
515 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */
516 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */
517 OVS_FLOW_ATTR_PROBE, /* Flow operation is a feature probe, error
518 * logging should be suppressed. */
519 OVS_FLOW_ATTR_UFID, /* Variable length unique flow identifier. */
520 OVS_FLOW_ATTR_UFID_FLAGS,/* u32 of OVS_UFID_F_*. */
524 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)
527 * Omit attributes for notifications.
529 * If a datapath request contains an %OVS_UFID_F_OMIT_* flag, then the datapath
530 * may omit the corresponding %OVS_FLOW_ATTR_* from the response.
532 #define OVS_UFID_F_OMIT_KEY (1 << 0)
533 #define OVS_UFID_F_OMIT_MASK (1 << 1)
534 #define OVS_UFID_F_OMIT_ACTIONS (1 << 2)
537 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action.
538 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with
539 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of
540 * %UINT32_MAX samples all packets and intermediate values sample intermediate
541 * fractions of packets.
542 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event.
543 * Actions are passed as nested attributes.
545 * Executes the specified actions with the given probability on a per-packet
548 enum ovs_sample_attr {
549 OVS_SAMPLE_ATTR_UNSPEC,
550 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */
551 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
552 __OVS_SAMPLE_ATTR_MAX,
555 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)
558 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.
559 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION
560 * message should be sent. Required.
561 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is
562 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA.
563 * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get
565 * @OVS_USERSPACE_ATTR_ACTIONS: If present, send actions with upcall.
567 enum ovs_userspace_attr {
568 OVS_USERSPACE_ATTR_UNSPEC,
569 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */
570 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */
571 OVS_USERSPACE_ATTR_EGRESS_TUN_PORT, /* Optional, u32 output port
572 * to get tunnel info. */
573 OVS_USERSPACE_ATTR_ACTIONS, /* Optional flag to get actions. */
574 __OVS_USERSPACE_ATTR_MAX
577 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)
580 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument.
581 * @mpls_lse: MPLS label stack entry to push.
582 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame.
584 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and
585 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected.
587 struct ovs_action_push_mpls {
589 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */
593 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument.
594 * @vlan_tpid: Tag protocol identifier (TPID) to push.
595 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set
596 * (but it will not be set in the 802.1Q header that is pushed).
598 * The @vlan_tpid value is typically %ETH_P_8021Q. The only acceptable TPID
599 * values are those that the kernel module also parses as 802.1Q headers, to
600 * prevent %OVS_ACTION_ATTR_PUSH_VLAN followed by %OVS_ACTION_ATTR_POP_VLAN
601 * from having surprising results.
603 struct ovs_action_push_vlan {
604 __be16 vlan_tpid; /* 802.1Q TPID. */
605 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */
608 /* Data path hash algorithm for computing Datapath hash.
610 * The algorithm type only specifies the fields in a flow
611 * will be used as part of the hash. Each datapath is free
612 * to use its own hash algorithm. The hash value will be
613 * opaque to the user space daemon.
620 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument.
621 * @hash_alg: Algorithm used to compute hash prior to recirculation.
622 * @hash_basis: basis used for computing hash.
624 struct ovs_action_hash {
625 uint32_t hash_alg; /* One of ovs_hash_alg. */
630 * enum ovs_ct_attr - Attributes for %OVS_ACTION_ATTR_CT action.
631 * @OVS_CT_ATTR_COMMIT: If present, commits the connection to the conntrack
632 * table. This allows future packets for the same connection to be identified
633 * as 'established' or 'related'. The flow key for the current packet will
634 * retain the pre-commit connection state.
635 * @OVS_CT_ATTR_ZONE: u16 connection tracking zone.
636 * @OVS_CT_ATTR_MARK: u32 value followed by u32 mask. For each bit set in the
637 * mask, the corresponding bit in the value is copied to the connection
638 * tracking mark field in the connection.
639 * @OVS_CT_ATTR_LABELS: %OVS_CT_LABELS_LEN value followed by %OVS_CT_LABELS_LEN
640 * mask. For each bit set in the mask, the corresponding bit in the value is
641 * copied to the connection tracking label field in the connection.
642 * @OVS_CT_ATTR_HELPER: variable length string defining conntrack ALG.
643 * @OVS_CT_ATTR_NAT: Nested OVS_NAT_ATTR_* for performing L3 network address
644 * translation (NAT) on the packet.
648 OVS_CT_ATTR_COMMIT, /* No argument, commits connection. */
649 OVS_CT_ATTR_ZONE, /* u16 zone id. */
650 OVS_CT_ATTR_MARK, /* mark to associate with this connection. */
651 OVS_CT_ATTR_LABELS, /* labels to associate with this connection. */
652 OVS_CT_ATTR_HELPER, /* netlink helper to assist detection of
653 related connections. */
654 OVS_CT_ATTR_NAT, /* Nested OVS_NAT_ATTR_* */
658 #define OVS_CT_ATTR_MAX (__OVS_CT_ATTR_MAX - 1)
661 * enum ovs_nat_attr - Attributes for %OVS_CT_ATTR_NAT.
663 * @OVS_NAT_ATTR_SRC: Flag for Source NAT (mangle source address/port).
664 * @OVS_NAT_ATTR_DST: Flag for Destination NAT (mangle destination
665 * address/port). Only one of (@OVS_NAT_ATTR_SRC, @OVS_NAT_ATTR_DST) may be
666 * specified. Effective only for packets for ct_state NEW connections.
667 * Packets of committed connections are mangled by the NAT action according to
668 * the committed NAT type regardless of the flags specified. As a corollary, a
669 * NAT action without a NAT type flag will only mangle packets of committed
670 * connections. The following NAT attributes only apply for NEW
671 * (non-committed) connections, and they may be included only when the CT
672 * action has the @OVS_CT_ATTR_COMMIT flag and either @OVS_NAT_ATTR_SRC or
673 * @OVS_NAT_ATTR_DST is also included.
674 * @OVS_NAT_ATTR_IP_MIN: struct in_addr or struct in6_addr
675 * @OVS_NAT_ATTR_IP_MAX: struct in_addr or struct in6_addr
676 * @OVS_NAT_ATTR_PROTO_MIN: u16 L4 protocol specific lower boundary (port)
677 * @OVS_NAT_ATTR_PROTO_MAX: u16 L4 protocol specific upper boundary (port)
678 * @OVS_NAT_ATTR_PERSISTENT: Flag for persistent IP mapping across reboots
679 * @OVS_NAT_ATTR_PROTO_HASH: Flag for pseudo random L4 port mapping (MD5)
680 * @OVS_NAT_ATTR_PROTO_RANDOM: Flag for fully randomized L4 port mapping
688 OVS_NAT_ATTR_PROTO_MIN,
689 OVS_NAT_ATTR_PROTO_MAX,
690 OVS_NAT_ATTR_PERSISTENT,
691 OVS_NAT_ATTR_PROTO_HASH,
692 OVS_NAT_ATTR_PROTO_RANDOM,
696 #define OVS_NAT_ATTR_MAX (__OVS_NAT_ATTR_MAX - 1)
699 * enum ovs_action_attr - Action types.
701 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port.
702 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested
703 * %OVS_USERSPACE_ATTR_* attributes.
704 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The
705 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its
707 * @OVS_ACTION_ATTR_SET_MASKED: Replaces the contents of an existing header. A
708 * nested %OVS_KEY_ATTR_* attribute specifies a header to modify, its value,
709 * and a mask. For every bit set in the mask, the corresponding bit value
710 * is copied from the value to the packet header field, rest of the bits are
711 * left unchanged. The non-masked value bits must be passed in as zeroes.
712 * Masking is not supported for the %OVS_KEY_ATTR_TUNNEL attribute.
713 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q header onto the
715 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q header off the packet.
716 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
717 * the nested %OVS_SAMPLE_ATTR_* attributes.
718 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the
719 * top of the packets MPLS label stack. Set the ethertype of the
720 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to
721 * indicate the new packet contents.
722 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the
723 * packet's MPLS label stack. Set the encapsulating frame's ethertype to
724 * indicate the new packet contents. This could potentially still be
725 * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there
726 * is no MPLS label stack, as determined by ethertype, no action is taken.
727 * @OVS_ACTION_ATTR_CT: Track the connection. Populate the conntrack-related
728 * entries in the flow key.
730 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
731 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment
732 * type may not be changed.
734 * @OVS_ACTION_ATTR_SET_TO_MASKED: Kernel internal masked set action translated
735 * from the @OVS_ACTION_ATTR_SET.
738 enum ovs_action_attr {
739 OVS_ACTION_ATTR_UNSPEC,
740 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */
741 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */
742 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */
743 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */
744 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */
745 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
746 OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */
747 OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */
748 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */
749 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */
750 OVS_ACTION_ATTR_SET_MASKED, /* One nested OVS_KEY_ATTR_* including
751 * data immediately followed by a mask.
752 * The data must be zero for the unmasked
754 OVS_ACTION_ATTR_CT, /* Nested OVS_CT_ATTR_* . */
756 __OVS_ACTION_ATTR_MAX, /* Nothing past this will be accepted
760 OVS_ACTION_ATTR_SET_TO_MASKED, /* Kernel module internal masked
761 * set action converted from
762 * OVS_ACTION_ATTR_SET. */
766 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
768 #endif /* _LINUX_OPENVSWITCH_H */