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1
2/*
3 * Copyright (c) 2007-2013 Nicira, Inc.
4 *
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.
8 *
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.
13 *
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
17 * 02110-1301, USA
18 */
19
20#ifndef _UAPI__LINUX_OPENVSWITCH_H
21#define _UAPI__LINUX_OPENVSWITCH_H 1
22
23#include <linux/types.h>
24#include <linux/if_ether.h>
25
26/**
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).
30 *
31 * Attributes following the header are specific to a particular OVS Generic
32 * Netlink family, but all of the OVS families use this header.
33 */
34
35struct ovs_header {
36 int dp_ifindex;
37};
38
39/* Datapaths. */
40
41#define OVS_DATAPATH_FAMILY "ovs_datapath"
42#define OVS_DATAPATH_MCGROUP "ovs_datapath"
43
44/* V2:
45 * - API users are expected to provide OVS_DP_ATTR_USER_FEATURES
46 * when creating the datapath.
47 */
48#define OVS_DATAPATH_VERSION 2
49
50/* First OVS datapath version to support features */
51#define OVS_DP_VER_FEATURES 2
52
53enum ovs_datapath_cmd {
54 OVS_DP_CMD_UNSPEC,
55 OVS_DP_CMD_NEW,
56 OVS_DP_CMD_DEL,
57 OVS_DP_CMD_GET,
58 OVS_DP_CMD_SET
59};
60
61/**
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
71 * not be sent.
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.
76 *
77 * These attributes follow the &struct ovs_header within the Generic Netlink
78 * payload for %OVS_DP_* commands.
79 */
80enum ovs_datapath_attr {
81 OVS_DP_ATTR_UNSPEC,
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_* */
87 __OVS_DP_ATTR_MAX
88};
89
90#define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1)
91
92struct ovs_dp_stats {
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 */
97};
98
99struct 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. */
105};
106
107struct 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 */
116};
117
118/* Allow last Netlink attribute to be unaligned */
119#define OVS_DP_F_UNALIGNED (1 << 0)
120
121/* Allow datapath to associate multiple Netlink PIDs to each vport */
122#define OVS_DP_F_VPORT_PIDS (1 << 1)
123
124/* Fixed logical ports. */
125#define OVSP_LOCAL ((__u32)0)
126
127/* Packet transfer. */
128
129#define OVS_PACKET_FAMILY "ovs_packet"
130#define OVS_PACKET_VERSION 0x1
131
132enum ovs_packet_cmd {
133 OVS_PACKET_CMD_UNSPEC,
134
135 /* Kernel-to-user notifications. */
136 OVS_PACKET_CMD_MISS, /* Flow table miss. */
137 OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */
138
139 /* Userspace commands. */
140 OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */
141};
142
143/**
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
159 * specified there.
160 *
161 * These attributes follow the &struct ovs_header within the Generic Netlink
162 * payload for %OVS_PACKET_* commands.
163 */
164enum ovs_packet_attr {
165 OVS_PACKET_ATTR_UNSPEC,
166 OVS_PACKET_ATTR_PACKET, /* Packet data. */
167 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */
168 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
169 OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */
170 __OVS_PACKET_ATTR_MAX
171};
172
173#define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)
174
175/* Virtual ports. */
176
177#define OVS_VPORT_FAMILY "ovs_vport"
178#define OVS_VPORT_MCGROUP "ovs_vport"
179#define OVS_VPORT_VERSION 0x1
180
181enum ovs_vport_cmd {
182 OVS_VPORT_CMD_UNSPEC,
183 OVS_VPORT_CMD_NEW,
184 OVS_VPORT_CMD_DEL,
185 OVS_VPORT_CMD_GET,
186 OVS_VPORT_CMD_SET
187};
188
189enum ovs_vport_type {
190 OVS_VPORT_TYPE_UNSPEC,
191 OVS_VPORT_TYPE_NETDEV, /* network device */
192 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
193 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */
194 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */
195 __OVS_VPORT_TYPE_MAX
196};
197
198#define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)
199
200/**
201 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.
202 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.
203 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type
204 * of vport.
205 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device
206 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes
207 * plus a null terminator.
208 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.
209 * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace
210 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets
211 * received on this port. If this is a single-element array of value 0,
212 * upcalls should not be sent.
213 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for
214 * packets sent or received through the vport.
215 *
216 * These attributes follow the &struct ovs_header within the Generic Netlink
217 * payload for %OVS_VPORT_* commands.
218 *
219 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and
220 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is
221 * optional; if not specified a free port number is automatically selected.
222 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type
223 * of vport.
224 *
225 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to
226 * look up the vport to operate on; otherwise dp_idx from the &struct
227 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport.
228 */
229enum ovs_vport_attr {
230 OVS_VPORT_ATTR_UNSPEC,
231 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */
232 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */
233 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */
234 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
235 OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */
236 /* receiving upcalls */
237 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */
238 __OVS_VPORT_ATTR_MAX
239};
240
241#define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)
242
243/* OVS_VPORT_ATTR_OPTIONS attributes for tunnels.
244 */
245enum {
246 OVS_TUNNEL_ATTR_UNSPEC,
247 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */
248 __OVS_TUNNEL_ATTR_MAX
249};
250
251#define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1)
252
253/* Flows. */
254
255#define OVS_FLOW_FAMILY "ovs_flow"
256#define OVS_FLOW_MCGROUP "ovs_flow"
257#define OVS_FLOW_VERSION 0x1
258
259enum ovs_flow_cmd {
260 OVS_FLOW_CMD_UNSPEC,
261 OVS_FLOW_CMD_NEW,
262 OVS_FLOW_CMD_DEL,
263 OVS_FLOW_CMD_GET,
264 OVS_FLOW_CMD_SET
265};
266
267struct ovs_flow_stats {
268 __u64 n_packets; /* Number of matched packets. */
269 __u64 n_bytes; /* Number of matched bytes. */
270};
271
272enum ovs_key_attr {
273 OVS_KEY_ATTR_UNSPEC,
274 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */
275 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */
276 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */
277 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */
278 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */
279 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */
280 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */
281 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */
282 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */
283 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */
284 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */
285 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */
286 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */
287 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */
288 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */
289 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */
290 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */
291 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */
292
293#ifdef __KERNEL__
294 OVS_KEY_ATTR_IPV4_TUNNEL, /* struct ovs_key_ipv4_tunnel */
295#endif
296 __OVS_KEY_ATTR_MAX
297};
298
299#define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)
300
301enum ovs_tunnel_key_attr {
302 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */
303 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */
304 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */
305 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */
306 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */
307 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */
308 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */
309 __OVS_TUNNEL_KEY_ATTR_MAX
310};
311
312#define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1)
313
314/**
315 * enum ovs_frag_type - IPv4 and IPv6 fragment type
316 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment.
317 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.
318 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.
319 *
320 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct
321 * ovs_key_ipv6.
322 */
323enum ovs_frag_type {
324 OVS_FRAG_TYPE_NONE,
325 OVS_FRAG_TYPE_FIRST,
326 OVS_FRAG_TYPE_LATER,
327 __OVS_FRAG_TYPE_MAX
328};
329
330#define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)
331
332struct ovs_key_ethernet {
333 __u8 eth_src[ETH_ALEN];
334 __u8 eth_dst[ETH_ALEN];
335};
336
337struct ovs_key_ipv4 {
338 __be32 ipv4_src;
339 __be32 ipv4_dst;
340 __u8 ipv4_proto;
341 __u8 ipv4_tos;
342 __u8 ipv4_ttl;
343 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */
344};
345
346struct ovs_key_ipv6 {
347 __be32 ipv6_src[4];
348 __be32 ipv6_dst[4];
349 __be32 ipv6_label; /* 20-bits in least-significant bits. */
350 __u8 ipv6_proto;
351 __u8 ipv6_tclass;
352 __u8 ipv6_hlimit;
353 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */
354};
355
356struct ovs_key_tcp {
357 __be16 tcp_src;
358 __be16 tcp_dst;
359};
360
361struct ovs_key_udp {
362 __be16 udp_src;
363 __be16 udp_dst;
364};
365
366struct ovs_key_sctp {
367 __be16 sctp_src;
368 __be16 sctp_dst;
369};
370
371struct ovs_key_icmp {
372 __u8 icmp_type;
373 __u8 icmp_code;
374};
375
376struct ovs_key_icmpv6 {
377 __u8 icmpv6_type;
378 __u8 icmpv6_code;
379};
380
381struct ovs_key_arp {
382 __be32 arp_sip;
383 __be32 arp_tip;
384 __be16 arp_op;
385 __u8 arp_sha[ETH_ALEN];
386 __u8 arp_tha[ETH_ALEN];
387};
388
389struct ovs_key_nd {
390 __u32 nd_target[4];
391 __u8 nd_sll[ETH_ALEN];
392 __u8 nd_tll[ETH_ALEN];
393};
394
395/**
396 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands.
397 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow
398 * key. Always present in notifications. Required for all requests (except
399 * dumps).
400 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying
401 * the actions to take for packets that match the key. Always present in
402 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
403 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without
404 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions,
405 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given.
406 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this
407 * flow. Present in notifications if the stats would be nonzero. Ignored in
408 * requests.
409 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the
410 * TCP flags seen on packets in this flow. Only present in notifications for
411 * TCP flows, and only if it would be nonzero. Ignored in requests.
412 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on
413 * the system monotonic clock, at which a packet was last processed for this
414 * flow. Only present in notifications if a packet has been processed for this
415 * flow. Ignored in requests.
416 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the
417 * last-used time, accumulated TCP flags, and statistics for this flow.
418 * Otherwise ignored in requests. Never present in notifications.
419 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the
420 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact
421 * match with corresponding flow key bit, while mask bit value '0' specifies
422 * a wildcarded match. Omitting attribute is treated as wildcarding all
423 * corresponding fields. Optional for all requests. If not present,
424 * all flow key bits are exact match bits.
425 *
426 * These attributes follow the &struct ovs_header within the Generic Netlink
427 * payload for %OVS_FLOW_* commands.
428 */
429enum ovs_flow_attr {
430 OVS_FLOW_ATTR_UNSPEC,
431 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */
432 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
433 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */
434 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */
435 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */
436 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */
437 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */
438 __OVS_FLOW_ATTR_MAX
439};
440
441#define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)
442
443/**
444 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action.
445 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with
446 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of
447 * %UINT32_MAX samples all packets and intermediate values sample intermediate
448 * fractions of packets.
449 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event.
450 * Actions are passed as nested attributes.
451 *
452 * Executes the specified actions with the given probability on a per-packet
453 * basis.
454 */
455enum ovs_sample_attr {
456 OVS_SAMPLE_ATTR_UNSPEC,
457 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */
458 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
459 __OVS_SAMPLE_ATTR_MAX,
460};
461
462#define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)
463
464/**
465 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.
466 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION
467 * message should be sent. Required.
468 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is
469 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA.
470 */
471enum ovs_userspace_attr {
472 OVS_USERSPACE_ATTR_UNSPEC,
473 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */
474 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */
475 __OVS_USERSPACE_ATTR_MAX
476};
477
478#define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)
479
480/**
481 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument.
482 * @vlan_tpid: Tag protocol identifier (TPID) to push.
483 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set
484 * (but it will not be set in the 802.1Q header that is pushed).
485 *
486 * The @vlan_tpid value is typically %ETH_P_8021Q. The only acceptable TPID
487 * values are those that the kernel module also parses as 802.1Q headers, to
488 * prevent %OVS_ACTION_ATTR_PUSH_VLAN followed by %OVS_ACTION_ATTR_POP_VLAN
489 * from having surprising results.
490 */
491struct ovs_action_push_vlan {
492 __be16 vlan_tpid; /* 802.1Q TPID. */
493 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */
494};
495
496/**
497 * enum ovs_action_attr - Action types.
498 *
499 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port.
500 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested
501 * %OVS_USERSPACE_ATTR_* attributes.
502 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The
503 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its
504 * value.
505 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q header onto the
506 * packet.
507 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q header off the packet.
508 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
509 * the nested %OVS_SAMPLE_ATTR_* attributes.
510 *
511 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
512 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment
513 * type may not be changed.
514 */
515
516enum ovs_action_attr {
517 OVS_ACTION_ATTR_UNSPEC,
518 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */
519 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */
520 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */
521 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */
522 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */
523 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
524 __OVS_ACTION_ATTR_MAX
525};
526
527#define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
528
529#endif /* _LINUX_OPENVSWITCH_H */