Linux kernel mirror (for testing)
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linux
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#define OVS_DATAPATH_VERSION 0x1
44
45enum ovs_datapath_cmd {
46 OVS_DP_CMD_UNSPEC,
47 OVS_DP_CMD_NEW,
48 OVS_DP_CMD_DEL,
49 OVS_DP_CMD_GET,
50 OVS_DP_CMD_SET
51};
52
53/**
54 * enum ovs_datapath_attr - attributes for %OVS_DP_* commands.
55 * @OVS_DP_ATTR_NAME: Name of the network device that serves as the "local
56 * port". This is the name of the network device whose dp_ifindex is given in
57 * the &struct ovs_header. Always present in notifications. Required in
58 * %OVS_DP_NEW requests. May be used as an alternative to specifying
59 * dp_ifindex in other requests (with a dp_ifindex of 0).
60 * @OVS_DP_ATTR_UPCALL_PID: The Netlink socket in userspace that is initially
61 * set on the datapath port (for OVS_ACTION_ATTR_MISS). Only valid on
62 * %OVS_DP_CMD_NEW requests. A value of zero indicates that upcalls should
63 * not be sent.
64 * @OVS_DP_ATTR_STATS: Statistics about packets that have passed through the
65 * datapath. Always present in notifications.
66 * @OVS_DP_ATTR_MEGAFLOW_STATS: Statistics about mega flow masks usage for the
67 * datapath. Always present in notifications.
68 *
69 * These attributes follow the &struct ovs_header within the Generic Netlink
70 * payload for %OVS_DP_* commands.
71 */
72enum ovs_datapath_attr {
73 OVS_DP_ATTR_UNSPEC,
74 OVS_DP_ATTR_NAME, /* name of dp_ifindex netdev */
75 OVS_DP_ATTR_UPCALL_PID, /* Netlink PID to receive upcalls */
76 OVS_DP_ATTR_STATS, /* struct ovs_dp_stats */
77 OVS_DP_ATTR_MEGAFLOW_STATS, /* struct ovs_dp_megaflow_stats */
78 __OVS_DP_ATTR_MAX
79};
80
81#define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1)
82
83struct ovs_dp_stats {
84 __u64 n_hit; /* Number of flow table matches. */
85 __u64 n_missed; /* Number of flow table misses. */
86 __u64 n_lost; /* Number of misses not sent to userspace. */
87 __u64 n_flows; /* Number of flows present */
88};
89
90struct ovs_dp_megaflow_stats {
91 __u64 n_mask_hit; /* Number of masks used for flow lookups. */
92 __u32 n_masks; /* Number of masks for the datapath. */
93 __u32 pad0; /* Pad for future expension. */
94 __u64 pad1; /* Pad for future expension. */
95 __u64 pad2; /* Pad for future expension. */
96};
97
98struct ovs_vport_stats {
99 __u64 rx_packets; /* total packets received */
100 __u64 tx_packets; /* total packets transmitted */
101 __u64 rx_bytes; /* total bytes received */
102 __u64 tx_bytes; /* total bytes transmitted */
103 __u64 rx_errors; /* bad packets received */
104 __u64 tx_errors; /* packet transmit problems */
105 __u64 rx_dropped; /* no space in linux buffers */
106 __u64 tx_dropped; /* no space available in linux */
107};
108
109/* Fixed logical ports. */
110#define OVSP_LOCAL ((__u32)0)
111
112/* Packet transfer. */
113
114#define OVS_PACKET_FAMILY "ovs_packet"
115#define OVS_PACKET_VERSION 0x1
116
117enum ovs_packet_cmd {
118 OVS_PACKET_CMD_UNSPEC,
119
120 /* Kernel-to-user notifications. */
121 OVS_PACKET_CMD_MISS, /* Flow table miss. */
122 OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */
123
124 /* Userspace commands. */
125 OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */
126};
127
128/**
129 * enum ovs_packet_attr - attributes for %OVS_PACKET_* commands.
130 * @OVS_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire
131 * packet as received, from the start of the Ethernet header onward. For
132 * %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by
133 * actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is
134 * the flow key extracted from the packet as originally received.
135 * @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key
136 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows
137 * userspace to adapt its flow setup strategy by comparing its notion of the
138 * flow key against the kernel's.
139 * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used
140 * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes.
141 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION
142 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an
143 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content
144 * specified there.
145 *
146 * These attributes follow the &struct ovs_header within the Generic Netlink
147 * payload for %OVS_PACKET_* commands.
148 */
149enum ovs_packet_attr {
150 OVS_PACKET_ATTR_UNSPEC,
151 OVS_PACKET_ATTR_PACKET, /* Packet data. */
152 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */
153 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
154 OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */
155 __OVS_PACKET_ATTR_MAX
156};
157
158#define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)
159
160/* Virtual ports. */
161
162#define OVS_VPORT_FAMILY "ovs_vport"
163#define OVS_VPORT_MCGROUP "ovs_vport"
164#define OVS_VPORT_VERSION 0x1
165
166enum ovs_vport_cmd {
167 OVS_VPORT_CMD_UNSPEC,
168 OVS_VPORT_CMD_NEW,
169 OVS_VPORT_CMD_DEL,
170 OVS_VPORT_CMD_GET,
171 OVS_VPORT_CMD_SET
172};
173
174enum ovs_vport_type {
175 OVS_VPORT_TYPE_UNSPEC,
176 OVS_VPORT_TYPE_NETDEV, /* network device */
177 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
178 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */
179 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */
180 __OVS_VPORT_TYPE_MAX
181};
182
183#define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)
184
185/**
186 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.
187 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.
188 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type
189 * of vport.
190 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device
191 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes
192 * plus a null terminator.
193 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.
194 * @OVS_VPORT_ATTR_UPCALL_PID: The Netlink socket in userspace that
195 * OVS_PACKET_CMD_MISS upcalls will be directed to for packets received on
196 * this port. A value of zero indicates that upcalls should not be sent.
197 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for
198 * packets sent or received through the vport.
199 *
200 * These attributes follow the &struct ovs_header within the Generic Netlink
201 * payload for %OVS_VPORT_* commands.
202 *
203 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and
204 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is
205 * optional; if not specified a free port number is automatically selected.
206 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type
207 * of vport.
208 *
209 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to
210 * look up the vport to operate on; otherwise dp_idx from the &struct
211 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport.
212 */
213enum ovs_vport_attr {
214 OVS_VPORT_ATTR_UNSPEC,
215 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */
216 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */
217 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */
218 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
219 OVS_VPORT_ATTR_UPCALL_PID, /* u32 Netlink PID to receive upcalls */
220 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */
221 __OVS_VPORT_ATTR_MAX
222};
223
224#define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)
225
226/* OVS_VPORT_ATTR_OPTIONS attributes for tunnels.
227 */
228enum {
229 OVS_TUNNEL_ATTR_UNSPEC,
230 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */
231 __OVS_TUNNEL_ATTR_MAX
232};
233
234#define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1)
235
236/* Flows. */
237
238#define OVS_FLOW_FAMILY "ovs_flow"
239#define OVS_FLOW_MCGROUP "ovs_flow"
240#define OVS_FLOW_VERSION 0x1
241
242enum ovs_flow_cmd {
243 OVS_FLOW_CMD_UNSPEC,
244 OVS_FLOW_CMD_NEW,
245 OVS_FLOW_CMD_DEL,
246 OVS_FLOW_CMD_GET,
247 OVS_FLOW_CMD_SET
248};
249
250struct ovs_flow_stats {
251 __u64 n_packets; /* Number of matched packets. */
252 __u64 n_bytes; /* Number of matched bytes. */
253};
254
255enum ovs_key_attr {
256 OVS_KEY_ATTR_UNSPEC,
257 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */
258 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */
259 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */
260 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */
261 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */
262 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */
263 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */
264 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */
265 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */
266 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */
267 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */
268 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */
269 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */
270 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */
271 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */
272 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */
273 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */
274 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */
275
276#ifdef __KERNEL__
277 OVS_KEY_ATTR_IPV4_TUNNEL, /* struct ovs_key_ipv4_tunnel */
278#endif
279 __OVS_KEY_ATTR_MAX
280};
281
282#define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)
283
284enum ovs_tunnel_key_attr {
285 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */
286 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */
287 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */
288 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */
289 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */
290 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */
291 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */
292 __OVS_TUNNEL_KEY_ATTR_MAX
293};
294
295#define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1)
296
297/**
298 * enum ovs_frag_type - IPv4 and IPv6 fragment type
299 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment.
300 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.
301 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.
302 *
303 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct
304 * ovs_key_ipv6.
305 */
306enum ovs_frag_type {
307 OVS_FRAG_TYPE_NONE,
308 OVS_FRAG_TYPE_FIRST,
309 OVS_FRAG_TYPE_LATER,
310 __OVS_FRAG_TYPE_MAX
311};
312
313#define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)
314
315struct ovs_key_ethernet {
316 __u8 eth_src[ETH_ALEN];
317 __u8 eth_dst[ETH_ALEN];
318};
319
320struct ovs_key_ipv4 {
321 __be32 ipv4_src;
322 __be32 ipv4_dst;
323 __u8 ipv4_proto;
324 __u8 ipv4_tos;
325 __u8 ipv4_ttl;
326 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */
327};
328
329struct ovs_key_ipv6 {
330 __be32 ipv6_src[4];
331 __be32 ipv6_dst[4];
332 __be32 ipv6_label; /* 20-bits in least-significant bits. */
333 __u8 ipv6_proto;
334 __u8 ipv6_tclass;
335 __u8 ipv6_hlimit;
336 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */
337};
338
339struct ovs_key_tcp {
340 __be16 tcp_src;
341 __be16 tcp_dst;
342};
343
344struct ovs_key_udp {
345 __be16 udp_src;
346 __be16 udp_dst;
347};
348
349struct ovs_key_sctp {
350 __be16 sctp_src;
351 __be16 sctp_dst;
352};
353
354struct ovs_key_icmp {
355 __u8 icmp_type;
356 __u8 icmp_code;
357};
358
359struct ovs_key_icmpv6 {
360 __u8 icmpv6_type;
361 __u8 icmpv6_code;
362};
363
364struct ovs_key_arp {
365 __be32 arp_sip;
366 __be32 arp_tip;
367 __be16 arp_op;
368 __u8 arp_sha[ETH_ALEN];
369 __u8 arp_tha[ETH_ALEN];
370};
371
372struct ovs_key_nd {
373 __u32 nd_target[4];
374 __u8 nd_sll[ETH_ALEN];
375 __u8 nd_tll[ETH_ALEN];
376};
377
378/**
379 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands.
380 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow
381 * key. Always present in notifications. Required for all requests (except
382 * dumps).
383 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying
384 * the actions to take for packets that match the key. Always present in
385 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
386 * %OVS_FLOW_CMD_SET requests.
387 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this
388 * flow. Present in notifications if the stats would be nonzero. Ignored in
389 * requests.
390 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the
391 * TCP flags seen on packets in this flow. Only present in notifications for
392 * TCP flows, and only if it would be nonzero. Ignored in requests.
393 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on
394 * the system monotonic clock, at which a packet was last processed for this
395 * flow. Only present in notifications if a packet has been processed for this
396 * flow. Ignored in requests.
397 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the
398 * last-used time, accumulated TCP flags, and statistics for this flow.
399 * Otherwise ignored in requests. Never present in notifications.
400 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the
401 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact
402 * match with corresponding flow key bit, while mask bit value '0' specifies
403 * a wildcarded match. Omitting attribute is treated as wildcarding all
404 * corresponding fields. Optional for all requests. If not present,
405 * all flow key bits are exact match bits.
406 *
407 * These attributes follow the &struct ovs_header within the Generic Netlink
408 * payload for %OVS_FLOW_* commands.
409 */
410enum ovs_flow_attr {
411 OVS_FLOW_ATTR_UNSPEC,
412 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */
413 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
414 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */
415 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */
416 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */
417 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */
418 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */
419 __OVS_FLOW_ATTR_MAX
420};
421
422#define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)
423
424/**
425 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action.
426 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with
427 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of
428 * %UINT32_MAX samples all packets and intermediate values sample intermediate
429 * fractions of packets.
430 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event.
431 * Actions are passed as nested attributes.
432 *
433 * Executes the specified actions with the given probability on a per-packet
434 * basis.
435 */
436enum ovs_sample_attr {
437 OVS_SAMPLE_ATTR_UNSPEC,
438 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */
439 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
440 __OVS_SAMPLE_ATTR_MAX,
441};
442
443#define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)
444
445/**
446 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.
447 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION
448 * message should be sent. Required.
449 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is
450 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA.
451 */
452enum ovs_userspace_attr {
453 OVS_USERSPACE_ATTR_UNSPEC,
454 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */
455 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */
456 __OVS_USERSPACE_ATTR_MAX
457};
458
459#define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)
460
461/**
462 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument.
463 * @vlan_tpid: Tag protocol identifier (TPID) to push.
464 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set
465 * (but it will not be set in the 802.1Q header that is pushed).
466 *
467 * The @vlan_tpid value is typically %ETH_P_8021Q. The only acceptable TPID
468 * values are those that the kernel module also parses as 802.1Q headers, to
469 * prevent %OVS_ACTION_ATTR_PUSH_VLAN followed by %OVS_ACTION_ATTR_POP_VLAN
470 * from having surprising results.
471 */
472struct ovs_action_push_vlan {
473 __be16 vlan_tpid; /* 802.1Q TPID. */
474 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */
475};
476
477/**
478 * enum ovs_action_attr - Action types.
479 *
480 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port.
481 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested
482 * %OVS_USERSPACE_ATTR_* attributes.
483 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The
484 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its
485 * value.
486 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q header onto the
487 * packet.
488 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q header off the packet.
489 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
490 * the nested %OVS_SAMPLE_ATTR_* attributes.
491 *
492 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
493 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment
494 * type may not be changed.
495 */
496
497enum ovs_action_attr {
498 OVS_ACTION_ATTR_UNSPEC,
499 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */
500 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */
501 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */
502 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */
503 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */
504 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
505 __OVS_ACTION_ATTR_MAX
506};
507
508#define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
509
510#endif /* _LINUX_OPENVSWITCH_H */