1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
4 * Copyright (c) 2007-2017 Nicira, Inc.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of version 2 of the GNU General Public
8 * License as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 #ifndef __LINUX_OPENVSWITCH_H
22 #define __LINUX_OPENVSWITCH_H 1
24 #include <linux/types.h>
25 #include <linux/if_ether.h>
28 * struct ovs_header - header for OVS Generic Netlink messages.
29 * @dp_ifindex: ifindex of local port for datapath (0 to make a request not
30 * specific to a datapath).
32 * Attributes following the header are specific to a particular OVS Generic
33 * Netlink family, but all of the OVS families use this header.
42 #define OVS_DATAPATH_FAMILY "ovs_datapath"
43 #define OVS_DATAPATH_MCGROUP "ovs_datapath"
46 * - API users are expected to provide OVS_DP_ATTR_USER_FEATURES
47 * when creating the datapath.
49 #define OVS_DATAPATH_VERSION 2
51 /* First OVS datapath version to support features */
52 #define OVS_DP_VER_FEATURES 2
54 enum ovs_datapath_cmd {
63 * enum ovs_datapath_attr - attributes for %OVS_DP_* commands.
64 * @OVS_DP_ATTR_NAME: Name of the network device that serves as the "local
65 * port". This is the name of the network device whose dp_ifindex is given in
66 * the &struct ovs_header. Always present in notifications. Required in
67 * %OVS_DP_NEW requests. May be used as an alternative to specifying
68 * dp_ifindex in other requests (with a dp_ifindex of 0).
69 * @OVS_DP_ATTR_UPCALL_PID: The Netlink socket in userspace that is initially
70 * set on the datapath port (for OVS_ACTION_ATTR_MISS). Only valid on
71 * %OVS_DP_CMD_NEW requests. A value of zero indicates that upcalls should
73 * @OVS_DP_ATTR_STATS: Statistics about packets that have passed through the
74 * datapath. Always present in notifications.
75 * @OVS_DP_ATTR_MEGAFLOW_STATS: Statistics about mega flow masks usage for the
76 * datapath. Always present in notifications.
78 * These attributes follow the &struct ovs_header within the Generic Netlink
79 * payload for %OVS_DP_* commands.
81 enum ovs_datapath_attr {
83 OVS_DP_ATTR_NAME, /* name of dp_ifindex netdev */
84 OVS_DP_ATTR_UPCALL_PID, /* Netlink PID to receive upcalls */
85 OVS_DP_ATTR_STATS, /* struct ovs_dp_stats */
86 OVS_DP_ATTR_MEGAFLOW_STATS, /* struct ovs_dp_megaflow_stats */
87 OVS_DP_ATTR_USER_FEATURES, /* OVS_DP_F_* */
92 #define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1)
95 __u64 n_hit; /* Number of flow table matches. */
96 __u64 n_missed; /* Number of flow table misses. */
97 __u64 n_lost; /* Number of misses not sent to userspace. */
98 __u64 n_flows; /* Number of flows present */
101 struct ovs_dp_megaflow_stats {
102 __u64 n_mask_hit; /* Number of masks used for flow lookups. */
103 __u32 n_masks; /* Number of masks for the datapath. */
104 __u32 pad0; /* Pad for future expension. */
105 __u64 pad1; /* Pad for future expension. */
106 __u64 pad2; /* Pad for future expension. */
109 struct ovs_vport_stats {
110 __u64 rx_packets; /* total packets received */
111 __u64 tx_packets; /* total packets transmitted */
112 __u64 rx_bytes; /* total bytes received */
113 __u64 tx_bytes; /* total bytes transmitted */
114 __u64 rx_errors; /* bad packets received */
115 __u64 tx_errors; /* packet transmit problems */
116 __u64 rx_dropped; /* no space in linux buffers */
117 __u64 tx_dropped; /* no space available in linux */
120 /* Allow last Netlink attribute to be unaligned */
121 #define OVS_DP_F_UNALIGNED (1 << 0)
123 /* Allow datapath to associate multiple Netlink PIDs to each vport */
124 #define OVS_DP_F_VPORT_PIDS (1 << 1)
126 /* Fixed logical ports. */
127 #define OVSP_LOCAL ((__u32)0)
129 /* Packet transfer. */
131 #define OVS_PACKET_FAMILY "ovs_packet"
132 #define OVS_PACKET_VERSION 0x1
134 enum ovs_packet_cmd {
135 OVS_PACKET_CMD_UNSPEC,
137 /* Kernel-to-user notifications. */
138 OVS_PACKET_CMD_MISS, /* Flow table miss. */
139 OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */
141 /* Userspace commands. */
142 OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */
146 * enum ovs_packet_attr - attributes for %OVS_PACKET_* commands.
147 * @OVS_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire
148 * packet as received, from the start of the Ethernet header onward. For
149 * %OVS_PACKET_CMD_ACTION, %OVS_PACKET_ATTR_PACKET reflects changes made by
150 * actions preceding %OVS_ACTION_ATTR_USERSPACE, but %OVS_PACKET_ATTR_KEY is
151 * the flow key extracted from the packet as originally received.
152 * @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key
153 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows
154 * userspace to adapt its flow setup strategy by comparing its notion of the
155 * flow key against the kernel's.
156 * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used
157 * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes.
158 * Also used in upcall when %OVS_ACTION_ATTR_USERSPACE has optional
159 * %OVS_USERSPACE_ATTR_ACTIONS attribute.
160 * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION
161 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an
162 * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content
164 * @OVS_PACKET_ATTR_EGRESS_TUN_KEY: Present for an %OVS_PACKET_CMD_ACTION
165 * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an
166 * %OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute, which is sent only if the
167 * output port is actually a tunnel port. Contains the output tunnel key
168 * extracted from the packet as nested %OVS_TUNNEL_KEY_ATTR_* attributes.
169 * @OVS_PACKET_ATTR_MRU: Present for an %OVS_PACKET_CMD_ACTION and
170 * @OVS_PACKET_ATTR_LEN: Packet size before truncation.
171 * %OVS_PACKET_ATTR_USERSPACE action specify the Maximum received fragment
174 * These attributes follow the &struct ovs_header within the Generic Netlink
175 * payload for %OVS_PACKET_* commands.
177 enum ovs_packet_attr {
178 OVS_PACKET_ATTR_UNSPEC,
179 OVS_PACKET_ATTR_PACKET, /* Packet data. */
180 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */
181 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
182 OVS_PACKET_ATTR_USERDATA, /* OVS_ACTION_ATTR_USERSPACE arg. */
183 OVS_PACKET_ATTR_EGRESS_TUN_KEY, /* Nested OVS_TUNNEL_KEY_ATTR_*
185 OVS_PACKET_ATTR_UNUSED1,
186 OVS_PACKET_ATTR_UNUSED2,
187 OVS_PACKET_ATTR_PROBE, /* Packet operation is a feature probe,
188 error logging should be suppressed. */
189 OVS_PACKET_ATTR_MRU, /* Maximum received IP fragment size. */
190 OVS_PACKET_ATTR_LEN, /* Packet size before truncation. */
191 __OVS_PACKET_ATTR_MAX
194 #define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)
198 #define OVS_VPORT_FAMILY "ovs_vport"
199 #define OVS_VPORT_MCGROUP "ovs_vport"
200 #define OVS_VPORT_VERSION 0x1
203 OVS_VPORT_CMD_UNSPEC,
210 enum ovs_vport_type {
211 OVS_VPORT_TYPE_UNSPEC,
212 OVS_VPORT_TYPE_NETDEV, /* network device */
213 OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
214 OVS_VPORT_TYPE_GRE, /* GRE tunnel. */
215 OVS_VPORT_TYPE_VXLAN, /* VXLAN tunnel. */
216 OVS_VPORT_TYPE_GENEVE, /* Geneve tunnel. */
220 #define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)
223 * enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.
224 * @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.
225 * @OVS_VPORT_ATTR_TYPE: 32-bit %OVS_VPORT_TYPE_* constant describing the type
227 * @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device
228 * this is the name of the network device. Maximum length %IFNAMSIZ-1 bytes
229 * plus a null terminator.
230 * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.
231 * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace
232 * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets
233 * received on this port. If this is a single-element array of value 0,
234 * upcalls should not be sent.
235 * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for
236 * packets sent or received through the vport.
238 * These attributes follow the &struct ovs_header within the Generic Netlink
239 * payload for %OVS_VPORT_* commands.
241 * For %OVS_VPORT_CMD_NEW requests, the %OVS_VPORT_ATTR_TYPE and
242 * %OVS_VPORT_ATTR_NAME attributes are required. %OVS_VPORT_ATTR_PORT_NO is
243 * optional; if not specified a free port number is automatically selected.
244 * Whether %OVS_VPORT_ATTR_OPTIONS is required or optional depends on the type
247 * For other requests, if %OVS_VPORT_ATTR_NAME is specified then it is used to
248 * look up the vport to operate on; otherwise dp_idx from the &struct
249 * ovs_header plus %OVS_VPORT_ATTR_PORT_NO determine the vport.
251 enum ovs_vport_attr {
252 OVS_VPORT_ATTR_UNSPEC,
253 OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */
254 OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */
255 OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */
256 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
257 OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */
258 /* receiving upcalls */
259 OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */
261 OVS_VPORT_ATTR_IFINDEX,
262 OVS_VPORT_ATTR_NETNSID,
266 #define OVS_VPORT_ATTR_MAX (__OVS_VPORT_ATTR_MAX - 1)
269 OVS_VXLAN_EXT_UNSPEC,
270 OVS_VXLAN_EXT_GBP, /* Flag or __u32 */
274 #define OVS_VXLAN_EXT_MAX (__OVS_VXLAN_EXT_MAX - 1)
277 /* OVS_VPORT_ATTR_OPTIONS attributes for tunnels.
280 OVS_TUNNEL_ATTR_UNSPEC,
281 OVS_TUNNEL_ATTR_DST_PORT, /* 16-bit UDP port, used by L4 tunnels. */
282 OVS_TUNNEL_ATTR_EXTENSION,
283 __OVS_TUNNEL_ATTR_MAX
286 #define OVS_TUNNEL_ATTR_MAX (__OVS_TUNNEL_ATTR_MAX - 1)
290 #define OVS_FLOW_FAMILY "ovs_flow"
291 #define OVS_FLOW_MCGROUP "ovs_flow"
292 #define OVS_FLOW_VERSION 0x1
302 struct ovs_flow_stats {
303 __u64 n_packets; /* Number of matched packets. */
304 __u64 n_bytes; /* Number of matched bytes. */
309 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */
310 OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */
311 OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */
312 OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */
313 OVS_KEY_ATTR_VLAN, /* be16 VLAN TCI */
314 OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */
315 OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */
316 OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */
317 OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */
318 OVS_KEY_ATTR_UDP, /* struct ovs_key_udp */
319 OVS_KEY_ATTR_ICMP, /* struct ovs_key_icmp */
320 OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */
321 OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */
322 OVS_KEY_ATTR_ND, /* struct ovs_key_nd */
323 OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */
324 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */
325 OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */
326 OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */
327 OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash
328 is not computed by the datapath. */
329 OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */
330 OVS_KEY_ATTR_MPLS, /* array of struct ovs_key_mpls.
331 * The implementation may restrict
332 * the accepted length of the array. */
333 OVS_KEY_ATTR_CT_STATE, /* u32 bitmask of OVS_CS_F_* */
334 OVS_KEY_ATTR_CT_ZONE, /* u16 connection tracking zone. */
335 OVS_KEY_ATTR_CT_MARK, /* u32 connection tracking mark */
336 OVS_KEY_ATTR_CT_LABELS, /* 16-octet connection tracking label */
337 OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4, /* struct ovs_key_ct_tuple_ipv4 */
338 OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6, /* struct ovs_key_ct_tuple_ipv6 */
339 OVS_KEY_ATTR_NSH, /* Nested set of ovs_nsh_key_* */
344 #define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)
346 enum ovs_tunnel_key_attr {
347 /* OVS_TUNNEL_KEY_ATTR_NONE, standard nl API requires this attribute! */
348 OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */
349 OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */
350 OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */
351 OVS_TUNNEL_KEY_ATTR_TOS, /* u8 Tunnel IP ToS. */
352 OVS_TUNNEL_KEY_ATTR_TTL, /* u8 Tunnel IP TTL. */
353 OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT, /* No argument, set DF. */
354 OVS_TUNNEL_KEY_ATTR_CSUM, /* No argument. CSUM packet. */
355 OVS_TUNNEL_KEY_ATTR_OAM, /* No argument. OAM frame. */
356 OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, /* Array of Geneve options. */
357 OVS_TUNNEL_KEY_ATTR_TP_SRC, /* be16 src Transport Port. */
358 OVS_TUNNEL_KEY_ATTR_TP_DST, /* be16 dst Transport Port. */
359 OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS, /* Nested OVS_VXLAN_EXT_* */
360 OVS_TUNNEL_KEY_ATTR_IPV6_SRC, /* struct in6_addr src IPv6 address. */
361 OVS_TUNNEL_KEY_ATTR_IPV6_DST, /* struct in6_addr dst IPv6 address. */
362 OVS_TUNNEL_KEY_ATTR_PAD,
363 OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS, /* struct erspan_metadata */
364 __OVS_TUNNEL_KEY_ATTR_MAX
367 #define OVS_TUNNEL_KEY_ATTR_MAX (__OVS_TUNNEL_KEY_ATTR_MAX - 1)
370 * enum ovs_frag_type - IPv4 and IPv6 fragment type
371 * @OVS_FRAG_TYPE_NONE: Packet is not a fragment.
372 * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.
373 * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.
375 * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct
385 #define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)
387 struct ovs_key_ethernet {
388 __u8 eth_src[ETH_ALEN];
389 __u8 eth_dst[ETH_ALEN];
392 struct ovs_key_mpls {
396 struct ovs_key_ipv4 {
402 __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */
405 struct ovs_key_ipv6 {
408 __be32 ipv6_label; /* 20-bits in least-significant bits. */
412 __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */
425 struct ovs_key_sctp {
430 struct ovs_key_icmp {
435 struct ovs_key_icmpv6 {
444 __u8 arp_sha[ETH_ALEN];
445 __u8 arp_tha[ETH_ALEN];
450 __u8 nd_sll[ETH_ALEN];
451 __u8 nd_tll[ETH_ALEN];
454 #define OVS_CT_LABELS_LEN_32 4
455 #define OVS_CT_LABELS_LEN (OVS_CT_LABELS_LEN_32 * sizeof(__u32))
456 struct ovs_key_ct_labels {
458 __u8 ct_labels[OVS_CT_LABELS_LEN];
459 __u32 ct_labels_32[OVS_CT_LABELS_LEN_32];
463 /* OVS_KEY_ATTR_CT_STATE flags */
464 #define OVS_CS_F_NEW 0x01 /* Beginning of a new connection. */
465 #define OVS_CS_F_ESTABLISHED 0x02 /* Part of an existing connection. */
466 #define OVS_CS_F_RELATED 0x04 /* Related to an established
468 #define OVS_CS_F_REPLY_DIR 0x08 /* Flow is in the reply direction. */
469 #define OVS_CS_F_INVALID 0x10 /* Could not track connection. */
470 #define OVS_CS_F_TRACKED 0x20 /* Conntrack has occurred. */
471 #define OVS_CS_F_SRC_NAT 0x40 /* Packet's source address/port was
474 #define OVS_CS_F_DST_NAT 0x80 /* Packet's destination address/port
475 * was mangled by NAT.
478 #define OVS_CS_F_NAT_MASK (OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT)
480 struct ovs_key_ct_tuple_ipv4 {
488 struct ovs_key_ct_tuple_ipv6 {
496 enum ovs_nsh_key_attr {
497 OVS_NSH_KEY_ATTR_UNSPEC,
498 OVS_NSH_KEY_ATTR_BASE, /* struct ovs_nsh_key_base. */
499 OVS_NSH_KEY_ATTR_MD1, /* struct ovs_nsh_key_md1. */
500 OVS_NSH_KEY_ATTR_MD2, /* variable-length octets for MD type 2. */
501 __OVS_NSH_KEY_ATTR_MAX
504 #define OVS_NSH_KEY_ATTR_MAX (__OVS_NSH_KEY_ATTR_MAX - 1)
506 struct ovs_nsh_key_base {
514 #define NSH_MD1_CONTEXT_SIZE 4
516 struct ovs_nsh_key_md1 {
517 __be32 context[NSH_MD1_CONTEXT_SIZE];
521 * enum ovs_flow_attr - attributes for %OVS_FLOW_* commands.
522 * @OVS_FLOW_ATTR_KEY: Nested %OVS_KEY_ATTR_* attributes specifying the flow
523 * key. Always present in notifications. Required for all requests (except
525 * @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying
526 * the actions to take for packets that match the key. Always present in
527 * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
528 * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without
529 * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions,
530 * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given.
531 * @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this
532 * flow. Present in notifications if the stats would be nonzero. Ignored in
534 * @OVS_FLOW_ATTR_TCP_FLAGS: An 8-bit value giving the OR'd value of all of the
535 * TCP flags seen on packets in this flow. Only present in notifications for
536 * TCP flows, and only if it would be nonzero. Ignored in requests.
537 * @OVS_FLOW_ATTR_USED: A 64-bit integer giving the time, in milliseconds on
538 * the system monotonic clock, at which a packet was last processed for this
539 * flow. Only present in notifications if a packet has been processed for this
540 * flow. Ignored in requests.
541 * @OVS_FLOW_ATTR_CLEAR: If present in a %OVS_FLOW_CMD_SET request, clears the
542 * last-used time, accumulated TCP flags, and statistics for this flow.
543 * Otherwise ignored in requests. Never present in notifications.
544 * @OVS_FLOW_ATTR_MASK: Nested %OVS_KEY_ATTR_* attributes specifying the
545 * mask bits for wildcarded flow match. Mask bit value '1' specifies exact
546 * match with corresponding flow key bit, while mask bit value '0' specifies
547 * a wildcarded match. Omitting attribute is treated as wildcarding all
548 * corresponding fields. Optional for all requests. If not present,
549 * all flow key bits are exact match bits.
550 * @OVS_FLOW_ATTR_UFID: A value between 1-16 octets specifying a unique
551 * identifier for the flow. Causes the flow to be indexed by this value rather
552 * than the value of the %OVS_FLOW_ATTR_KEY attribute. Optional for all
553 * requests. Present in notifications if the flow was created with this
555 * @OVS_FLOW_ATTR_UFID_FLAGS: A 32-bit value of OR'd %OVS_UFID_F_*
556 * flags that provide alternative semantics for flow installation and
557 * retrieval. Optional for all requests.
559 * These attributes follow the &struct ovs_header within the Generic Netlink
560 * payload for %OVS_FLOW_* commands.
563 OVS_FLOW_ATTR_UNSPEC,
564 OVS_FLOW_ATTR_KEY, /* Sequence of OVS_KEY_ATTR_* attributes. */
565 OVS_FLOW_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
566 OVS_FLOW_ATTR_STATS, /* struct ovs_flow_stats. */
567 OVS_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */
568 OVS_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */
569 OVS_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */
570 OVS_FLOW_ATTR_MASK, /* Sequence of OVS_KEY_ATTR_* attributes. */
571 OVS_FLOW_ATTR_PROBE, /* Flow operation is a feature probe, error
572 * logging should be suppressed. */
573 OVS_FLOW_ATTR_UFID, /* Variable length unique flow identifier. */
574 OVS_FLOW_ATTR_UFID_FLAGS,/* u32 of OVS_UFID_F_*. */
579 #define OVS_FLOW_ATTR_MAX (__OVS_FLOW_ATTR_MAX - 1)
582 * Omit attributes for notifications.
584 * If a datapath request contains an %OVS_UFID_F_OMIT_* flag, then the datapath
585 * may omit the corresponding %OVS_FLOW_ATTR_* from the response.
587 #define OVS_UFID_F_OMIT_KEY (1 << 0)
588 #define OVS_UFID_F_OMIT_MASK (1 << 1)
589 #define OVS_UFID_F_OMIT_ACTIONS (1 << 2)
592 * enum ovs_sample_attr - Attributes for %OVS_ACTION_ATTR_SAMPLE action.
593 * @OVS_SAMPLE_ATTR_PROBABILITY: 32-bit fraction of packets to sample with
594 * @OVS_ACTION_ATTR_SAMPLE. A value of 0 samples no packets, a value of
595 * %UINT32_MAX samples all packets and intermediate values sample intermediate
596 * fractions of packets.
597 * @OVS_SAMPLE_ATTR_ACTIONS: Set of actions to execute in sampling event.
598 * Actions are passed as nested attributes.
600 * Executes the specified actions with the given probability on a per-packet
603 enum ovs_sample_attr {
604 OVS_SAMPLE_ATTR_UNSPEC,
605 OVS_SAMPLE_ATTR_PROBABILITY, /* u32 number */
606 OVS_SAMPLE_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
607 __OVS_SAMPLE_ATTR_MAX,
611 #define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)
615 * enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.
616 * @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION
617 * message should be sent. Required.
618 * @OVS_USERSPACE_ATTR_USERDATA: If present, its variable-length argument is
619 * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA.
620 * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get
622 * @OVS_USERSPACE_ATTR_ACTIONS: If present, send actions with upcall.
624 enum ovs_userspace_attr {
625 OVS_USERSPACE_ATTR_UNSPEC,
626 OVS_USERSPACE_ATTR_PID, /* u32 Netlink PID to receive upcalls. */
627 OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */
628 OVS_USERSPACE_ATTR_EGRESS_TUN_PORT, /* Optional, u32 output port
629 * to get tunnel info. */
630 OVS_USERSPACE_ATTR_ACTIONS, /* Optional flag to get actions. */
631 __OVS_USERSPACE_ATTR_MAX
634 #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)
636 struct ovs_action_trunc {
637 __u32 max_len; /* Max packet size in bytes. */
641 * struct ovs_action_push_mpls - %OVS_ACTION_ATTR_PUSH_MPLS action argument.
642 * @mpls_lse: MPLS label stack entry to push.
643 * @mpls_ethertype: Ethertype to set in the encapsulating ethernet frame.
645 * The only values @mpls_ethertype should ever be given are %ETH_P_MPLS_UC and
646 * %ETH_P_MPLS_MC, indicating MPLS unicast or multicast. Other are rejected.
648 struct ovs_action_push_mpls {
650 __be16 mpls_ethertype; /* Either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC */
654 * struct ovs_action_push_vlan - %OVS_ACTION_ATTR_PUSH_VLAN action argument.
655 * @vlan_tpid: Tag protocol identifier (TPID) to push.
656 * @vlan_tci: Tag control identifier (TCI) to push. The CFI bit must be set
657 * (but it will not be set in the 802.1Q header that is pushed).
659 * The @vlan_tpid value is typically %ETH_P_8021Q or %ETH_P_8021AD.
660 * The only acceptable TPID values are those that the kernel module also parses
661 * as 802.1Q or 802.1AD headers, to prevent %OVS_ACTION_ATTR_PUSH_VLAN followed
662 * by %OVS_ACTION_ATTR_POP_VLAN from having surprising results.
664 struct ovs_action_push_vlan {
665 __be16 vlan_tpid; /* 802.1Q or 802.1ad TPID. */
666 __be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */
669 /* Data path hash algorithm for computing Datapath hash.
671 * The algorithm type only specifies the fields in a flow
672 * will be used as part of the hash. Each datapath is free
673 * to use its own hash algorithm. The hash value will be
674 * opaque to the user space daemon.
681 * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument.
682 * @hash_alg: Algorithm used to compute hash prior to recirculation.
683 * @hash_basis: basis used for computing hash.
685 struct ovs_action_hash {
686 __u32 hash_alg; /* One of ovs_hash_alg. */
691 * enum ovs_ct_attr - Attributes for %OVS_ACTION_ATTR_CT action.
692 * @OVS_CT_ATTR_COMMIT: If present, commits the connection to the conntrack
693 * table. This allows future packets for the same connection to be identified
694 * as 'established' or 'related'. The flow key for the current packet will
695 * retain the pre-commit connection state.
696 * @OVS_CT_ATTR_ZONE: u16 connection tracking zone.
697 * @OVS_CT_ATTR_MARK: u32 value followed by u32 mask. For each bit set in the
698 * mask, the corresponding bit in the value is copied to the connection
699 * tracking mark field in the connection.
700 * @OVS_CT_ATTR_LABELS: %OVS_CT_LABELS_LEN value followed by %OVS_CT_LABELS_LEN
701 * mask. For each bit set in the mask, the corresponding bit in the value is
702 * copied to the connection tracking label field in the connection.
703 * @OVS_CT_ATTR_HELPER: variable length string defining conntrack ALG.
704 * @OVS_CT_ATTR_NAT: Nested OVS_NAT_ATTR_* for performing L3 network address
705 * translation (NAT) on the packet.
706 * @OVS_CT_ATTR_FORCE_COMMIT: Like %OVS_CT_ATTR_COMMIT, but instead of doing
707 * nothing if the connection is already committed will check that the current
708 * packet is in conntrack entry's original direction. If directionality does
709 * not match, will delete the existing conntrack entry and commit a new one.
710 * @OVS_CT_ATTR_EVENTMASK: Mask of bits indicating which conntrack event types
711 * (enum ip_conntrack_events IPCT_*) should be reported. For any bit set to
712 * zero, the corresponding event type is not generated. Default behavior
713 * depends on system configuration, but typically all event types are
714 * generated, hence listening on NFNLGRP_CONNTRACK_UPDATE events may get a lot
715 * of events. Explicitly passing this attribute allows limiting the updates
716 * received to the events of interest. The bit 1 << IPCT_NEW, 1 <<
717 * IPCT_RELATED, and 1 << IPCT_DESTROY must be set to ones for those events to
718 * be received on NFNLGRP_CONNTRACK_NEW and NFNLGRP_CONNTRACK_DESTROY groups,
719 * respectively. Remaining bits control the changes for which an event is
720 * delivered on the NFNLGRP_CONNTRACK_UPDATE group.
724 OVS_CT_ATTR_COMMIT, /* No argument, commits connection. */
725 OVS_CT_ATTR_ZONE, /* u16 zone id. */
726 OVS_CT_ATTR_MARK, /* mark to associate with this connection. */
727 OVS_CT_ATTR_LABELS, /* labels to associate with this connection. */
728 OVS_CT_ATTR_HELPER, /* netlink helper to assist detection of
729 related connections. */
730 OVS_CT_ATTR_NAT, /* Nested OVS_NAT_ATTR_* */
731 OVS_CT_ATTR_FORCE_COMMIT, /* No argument */
732 OVS_CT_ATTR_EVENTMASK, /* u32 mask of IPCT_* events. */
736 #define OVS_CT_ATTR_MAX (__OVS_CT_ATTR_MAX - 1)
739 * enum ovs_nat_attr - Attributes for %OVS_CT_ATTR_NAT.
741 * @OVS_NAT_ATTR_SRC: Flag for Source NAT (mangle source address/port).
742 * @OVS_NAT_ATTR_DST: Flag for Destination NAT (mangle destination
743 * address/port). Only one of (@OVS_NAT_ATTR_SRC, @OVS_NAT_ATTR_DST) may be
744 * specified. Effective only for packets for ct_state NEW connections.
745 * Packets of committed connections are mangled by the NAT action according to
746 * the committed NAT type regardless of the flags specified. As a corollary, a
747 * NAT action without a NAT type flag will only mangle packets of committed
748 * connections. The following NAT attributes only apply for NEW
749 * (non-committed) connections, and they may be included only when the CT
750 * action has the @OVS_CT_ATTR_COMMIT flag and either @OVS_NAT_ATTR_SRC or
751 * @OVS_NAT_ATTR_DST is also included.
752 * @OVS_NAT_ATTR_IP_MIN: struct in_addr or struct in6_addr
753 * @OVS_NAT_ATTR_IP_MAX: struct in_addr or struct in6_addr
754 * @OVS_NAT_ATTR_PROTO_MIN: u16 L4 protocol specific lower boundary (port)
755 * @OVS_NAT_ATTR_PROTO_MAX: u16 L4 protocol specific upper boundary (port)
756 * @OVS_NAT_ATTR_PERSISTENT: Flag for persistent IP mapping across reboots
757 * @OVS_NAT_ATTR_PROTO_HASH: Flag for pseudo random L4 port mapping (MD5)
758 * @OVS_NAT_ATTR_PROTO_RANDOM: Flag for fully randomized L4 port mapping
766 OVS_NAT_ATTR_PROTO_MIN,
767 OVS_NAT_ATTR_PROTO_MAX,
768 OVS_NAT_ATTR_PERSISTENT,
769 OVS_NAT_ATTR_PROTO_HASH,
770 OVS_NAT_ATTR_PROTO_RANDOM,
774 #define OVS_NAT_ATTR_MAX (__OVS_NAT_ATTR_MAX - 1)
777 * struct ovs_action_push_eth - %OVS_ACTION_ATTR_PUSH_ETH action argument.
778 * @addresses: Source and destination MAC addresses.
779 * @eth_type: Ethernet type
781 struct ovs_action_push_eth {
782 struct ovs_key_ethernet addresses;
786 * enum ovs_action_attr - Action types.
788 * @OVS_ACTION_ATTR_OUTPUT: Output packet to port.
789 * @OVS_ACTION_ATTR_TRUNC: Output packet to port with truncated packet size.
790 * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested
791 * %OVS_USERSPACE_ATTR_* attributes.
792 * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header. The
793 * single nested %OVS_KEY_ATTR_* attribute specifies a header to modify and its
795 * @OVS_ACTION_ATTR_SET_MASKED: Replaces the contents of an existing header. A
796 * nested %OVS_KEY_ATTR_* attribute specifies a header to modify, its value,
797 * and a mask. For every bit set in the mask, the corresponding bit value
798 * is copied from the value to the packet header field, rest of the bits are
799 * left unchanged. The non-masked value bits must be passed in as zeroes.
800 * Masking is not supported for the %OVS_KEY_ATTR_TUNNEL attribute.
801 * @OVS_ACTION_ATTR_PUSH_VLAN: Push a new outermost 802.1Q or 802.1ad header
803 * @OVS_ACTION_ATTR_POP_VLAN: Pop the outermost 802.1Q or 802.1ad header
805 * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
806 * the nested %OVS_SAMPLE_ATTR_* attributes.
807 * @OVS_ACTION_ATTR_PUSH_MPLS: Push a new MPLS label stack entry onto the
808 * top of the packets MPLS label stack. Set the ethertype of the
809 * encapsulating frame to either %ETH_P_MPLS_UC or %ETH_P_MPLS_MC to
810 * indicate the new packet contents.
811 * @OVS_ACTION_ATTR_POP_MPLS: Pop an MPLS label stack entry off of the
812 * packet's MPLS label stack. Set the encapsulating frame's ethertype to
813 * indicate the new packet contents. This could potentially still be
814 * %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there
815 * is no MPLS label stack, as determined by ethertype, no action is taken.
816 * @OVS_ACTION_ATTR_CT: Track the connection. Populate the conntrack-related
817 * entries in the flow key.
818 * @OVS_ACTION_ATTR_PUSH_ETH: Push a new outermost Ethernet header onto the
820 * @OVS_ACTION_ATTR_POP_ETH: Pop the outermost Ethernet header off the
822 * @OVS_ACTION_ATTR_CT_CLEAR: Clear conntrack state from the packet.
823 * @OVS_ACTION_ATTR_PUSH_NSH: push NSH header to the packet.
824 * @OVS_ACTION_ATTR_POP_NSH: pop the outermost NSH header off the packet.
825 * @OVS_ACTION_ATTR_METER: Run packet through a meter, which may drop the
826 * packet, or modify the packet (e.g., change the DSCP field).
827 * @OVS_ACTION_ATTR_CLONE: make a copy of the packet and execute a list of
828 * actions without affecting the original packet and key.
830 * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
831 * fields within a header are modifiable, e.g. the IPv4 protocol and fragment
832 * type may not be changed.
834 * @OVS_ACTION_ATTR_SET_TO_MASKED: Kernel internal masked set action translated
835 * from the @OVS_ACTION_ATTR_SET.
838 enum ovs_action_attr {
839 OVS_ACTION_ATTR_UNSPEC,
840 OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */
841 OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */
842 OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */
843 OVS_ACTION_ATTR_PUSH_VLAN, /* struct ovs_action_push_vlan. */
844 OVS_ACTION_ATTR_POP_VLAN, /* No argument. */
845 OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
846 OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */
847 OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */
848 OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */
849 OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */
850 OVS_ACTION_ATTR_SET_MASKED, /* One nested OVS_KEY_ATTR_* including
851 * data immediately followed by a mask.
852 * The data must be zero for the unmasked
854 OVS_ACTION_ATTR_CT, /* Nested OVS_CT_ATTR_* . */
855 OVS_ACTION_ATTR_TRUNC, /* u32 struct ovs_action_trunc. */
856 OVS_ACTION_ATTR_PUSH_ETH, /* struct ovs_action_push_eth. */
857 OVS_ACTION_ATTR_POP_ETH, /* No argument. */
858 OVS_ACTION_ATTR_CT_CLEAR, /* No argument. */
859 OVS_ACTION_ATTR_PUSH_NSH, /* Nested OVS_NSH_KEY_ATTR_*. */
860 OVS_ACTION_ATTR_POP_NSH, /* No argument. */
861 OVS_ACTION_ATTR_METER, /* u32 meter ID. */
862 OVS_ACTION_ATTR_CLONE, /* Nested OVS_CLONE_ATTR_*. */
864 __OVS_ACTION_ATTR_MAX, /* Nothing past this will be accepted
869 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
872 #define OVS_METER_FAMILY "ovs_meter"
873 #define OVS_METER_MCGROUP "ovs_meter"
874 #define OVS_METER_VERSION 0x1
877 OVS_METER_CMD_UNSPEC,
878 OVS_METER_CMD_FEATURES, /* Get features supported by the datapath. */
879 OVS_METER_CMD_SET, /* Add or modify a meter. */
880 OVS_METER_CMD_DEL, /* Delete a meter. */
881 OVS_METER_CMD_GET /* Get meter stats. */
884 enum ovs_meter_attr {
885 OVS_METER_ATTR_UNSPEC,
886 OVS_METER_ATTR_ID, /* u32 meter ID within datapath. */
887 OVS_METER_ATTR_KBPS, /* No argument. If set, units in kilobits
888 * per second. Otherwise, units in
889 * packets per second.
891 OVS_METER_ATTR_STATS, /* struct ovs_flow_stats for the meter. */
892 OVS_METER_ATTR_BANDS, /* Nested attributes for meter bands. */
893 OVS_METER_ATTR_USED, /* u64 msecs last used in monotonic time. */
894 OVS_METER_ATTR_CLEAR, /* Flag to clear stats, used. */
895 OVS_METER_ATTR_MAX_METERS, /* u32 number of meters supported. */
896 OVS_METER_ATTR_MAX_BANDS, /* u32 max number of bands per meter. */
901 #define OVS_METER_ATTR_MAX (__OVS_METER_ATTR_MAX - 1)
904 OVS_BAND_ATTR_UNSPEC,
905 OVS_BAND_ATTR_TYPE, /* u32 OVS_METER_BAND_TYPE_* constant. */
906 OVS_BAND_ATTR_RATE, /* u32 band rate in meter units (see above). */
907 OVS_BAND_ATTR_BURST, /* u32 burst size in meter units. */
908 OVS_BAND_ATTR_STATS, /* struct ovs_flow_stats for the band. */
912 #define OVS_BAND_ATTR_MAX (__OVS_BAND_ATTR_MAX - 1)
914 enum ovs_meter_band_type {
915 OVS_METER_BAND_TYPE_UNSPEC,
916 OVS_METER_BAND_TYPE_DROP, /* Drop exceeding packets. */
917 __OVS_METER_BAND_TYPE_MAX
920 #define OVS_METER_BAND_TYPE_MAX (__OVS_METER_BAND_TYPE_MAX - 1)
922 /* Conntrack limit */
923 #define OVS_CT_LIMIT_FAMILY "ovs_ct_limit"
924 #define OVS_CT_LIMIT_MCGROUP "ovs_ct_limit"
925 #define OVS_CT_LIMIT_VERSION 0x1
927 enum ovs_ct_limit_cmd {
928 OVS_CT_LIMIT_CMD_UNSPEC,
929 OVS_CT_LIMIT_CMD_SET, /* Add or modify ct limit. */
930 OVS_CT_LIMIT_CMD_DEL, /* Delete ct limit. */
931 OVS_CT_LIMIT_CMD_GET /* Get ct limit. */
934 enum ovs_ct_limit_attr {
935 OVS_CT_LIMIT_ATTR_UNSPEC,
936 OVS_CT_LIMIT_ATTR_ZONE_LIMIT, /* Nested struct ovs_zone_limit. */
937 __OVS_CT_LIMIT_ATTR_MAX
940 #define OVS_CT_LIMIT_ATTR_MAX (__OVS_CT_LIMIT_ATTR_MAX - 1)
942 #define OVS_ZONE_LIMIT_DEFAULT_ZONE -1
944 struct ovs_zone_limit {
950 #endif /* _LINUX_OPENVSWITCH_H */