2 * Copyright (c) 2009 Nicira Networks.
4 * This file is offered under your choice of two licenses: Apache 2.0 or GNU
5 * GPL 2.0 or later. The permission statements for each of these licenses is
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11 * ----------------------------------------------------------------------
12 * Licensed under the Apache License, Version 2.0 (the "License");
13 * you may not use this file except in compliance with the License.
14 * You may obtain a copy of the License at:
16 * http://www.apache.org/licenses/LICENSE-2.0
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20 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
21 * See the License for the specific language governing permissions and
22 * limitations under the License.
23 * ----------------------------------------------------------------------
24 * This program is free software; you can redistribute it and/or modify
25 * it under the terms of the GNU General Public License as published by
26 * the Free Software Foundation; either version 2 of the License, or
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29 * This program is distributed in the hope that it will be useful,
30 * but WITHOUT ANY WARRANTY; without even the implied warranty of
31 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
32 * GNU General Public License for more details.
34 * You should have received a copy of the GNU General Public License along
35 * with this program; if not, write to the Free Software Foundation, Inc.,
36 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
37 * ----------------------------------------------------------------------
40 /* Protocol between secchan and datapath. */
42 #ifndef OPENVSWITCH_DATAPATH_PROTOCOL_H
43 #define OPENVSWITCH_DATAPATH_PROTOCOL_H 1
46 #include <linux/types.h>
48 #include <sys/types.h>
50 #include <linux/if_ether.h>
52 #define ODP_MAX 256 /* Maximum number of datapaths. */
54 #define ODP_DP_CREATE _IO('O', 0)
55 #define ODP_DP_DESTROY _IO('O', 1)
56 #define ODP_DP_STATS _IOW('O', 2, struct odp_stats)
58 #define ODP_GET_DROP_FRAGS _IOW('O', 3, int)
59 #define ODP_SET_DROP_FRAGS _IOR('O', 4, int)
61 #define ODP_GET_LISTEN_MASK _IOW('O', 5, int)
62 #define ODP_SET_LISTEN_MASK _IOR('O', 6, int)
64 #define ODP_PORT_ADD _IOR('O', 7, struct odp_port)
65 #define ODP_PORT_DEL _IOR('O', 8, int)
66 #define ODP_PORT_QUERY _IOWR('O', 9, struct odp_port)
67 #define ODP_PORT_LIST _IOWR('O', 10, struct odp_portvec)
69 #define ODP_PORT_GROUP_SET _IOR('O', 11, struct odp_port_group)
70 #define ODP_PORT_GROUP_GET _IOWR('O', 12, struct odp_port_group)
72 #define ODP_FLOW_GET _IOWR('O', 13, struct odp_flow)
73 #define ODP_FLOW_LIST _IOWR('O', 15, struct odp_flowvec)
75 #define ODP_FLOW_FLUSH _IO('O', 16)
76 #define ODP_FLOW_PUT _IOWR('O', 17, struct odp_flow)
77 #define ODP_FLOW_DEL _IOWR('O', 18, struct odp_flow)
79 #define ODP_EXECUTE _IOR('O', 19, struct odp_execute)
83 __u32 n_flows; /* Number of flows in flow table. */
84 __u32 cur_capacity; /* Current flow table capacity. */
85 __u32 max_capacity; /* Maximum expansion of flow table capacity. */
88 __u32 n_ports; /* Current number of ports. */
89 __u32 max_ports; /* Maximum supported number of ports. */
90 __u16 max_groups; /* Maximum number of port groups. */
94 __u64 n_frags; /* Number of dropped IP fragments. */
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. */
100 __u16 max_miss_queue; /* Max length of ODPL_MISS queue. */
101 __u16 max_action_queue; /* Max length of ODPL_ACTION queue. */
105 #define ODPP_LOCAL ((__u16)0)
106 #define ODPP_NONE ((__u16)-1)
108 /* Listening channels. */
109 #define _ODPL_MISS_NR 0 /* Packet missed in flow table. */
110 #define ODPL_MISS (1 << _ODPL_MISS_NR)
111 #define _ODPL_ACTION_NR 1 /* Packet output to ODPP_CONTROLLER. */
112 #define ODPL_ACTION (1 << _ODPL_ACTION_NR)
113 #define ODPL_ALL (ODPL_MISS | ODPL_ACTION)
115 /* Format of messages read from datapath fd. */
117 __u32 type; /* _ODPL_MISS_NR or _ODPL_ACTION_NR. */
118 __u32 length; /* Message length, including header. */
119 __u16 port; /* Port on which frame was received. */
121 __u32 arg; /* Argument value specified in action. */
122 /* Followed by packet data. */
125 #define ODP_PORT_INTERNAL (1 << 0) /* This port is simulated. */
127 char devname[16]; /* IFNAMSIZ */
134 struct odp_port *ports;
138 struct odp_port_group {
140 __u16 n_ports; /* Number of ports. */
141 __u16 group; /* Group number. */
144 struct odp_flow_stats {
145 __u64 n_packets; /* Number of matched packets. */
146 __u64 n_bytes; /* Number of matched bytes. */
147 __u64 used_sec; /* Time last used. */
151 __u16 error; /* Used by ODP_FLOW_GET. */
154 struct odp_flow_key {
155 __be32 nw_src; /* IP source address. */
156 __be32 nw_dst; /* IP destination address. */
157 __u16 in_port; /* Input switch port. */
158 __be16 dl_vlan; /* Input VLAN. */
159 __be16 dl_type; /* Ethernet frame type. */
160 __be16 tp_src; /* TCP/UDP source port. */
161 __be16 tp_dst; /* TCP/UDP destination port. */
162 __u8 dl_src[ETH_ALEN]; /* Ethernet source address. */
163 __u8 dl_dst[ETH_ALEN]; /* Ethernet destination address. */
164 __u8 nw_proto; /* IP protocol. */
165 __u8 reserved; /* Pad to 64 bits. */
169 struct odp_flow_stats stats;
170 struct odp_flow_key key;
171 union odp_action *actions;
175 /* Flags for ODP_FLOW_PUT. */
176 #define ODPPF_CREATE (1 << 0) /* Allow creating a new flow. */
177 #define ODPPF_MODIFY (1 << 1) /* Allow modifying an existing flow. */
178 #define ODPPF_ZERO_STATS (1 << 2) /* Zero the stats of an existing flow. */
180 /* ODP_FLOW_PUT argument. */
181 struct odp_flow_put {
182 struct odp_flow flow;
187 struct odp_flow *flows;
191 /* The VLAN id is 12 bits, so we can use the entire 16 bits to indicate
192 * special conditions. All ones is used to match that no VLAN id was
194 #define ODP_VLAN_NONE 0xffff
197 #define ODPAT_OUTPUT 0 /* Output to switch port. */
198 #define ODPAT_OUTPUT_GROUP 1 /* Output to all ports in group. */
199 #define ODPAT_CONTROLLER 2 /* Send copy to controller. */
200 #define ODPAT_SET_VLAN_VID 3 /* Set the 802.1q VLAN id. */
201 #define ODPAT_SET_VLAN_PCP 4 /* Set the 802.1q priority. */
202 #define ODPAT_STRIP_VLAN 5 /* Strip the 802.1q header. */
203 #define ODPAT_SET_DL_SRC 6 /* Ethernet source address. */
204 #define ODPAT_SET_DL_DST 7 /* Ethernet destination address. */
205 #define ODPAT_SET_NW_SRC 8 /* IP source address. */
206 #define ODPAT_SET_NW_DST 9 /* IP destination address. */
207 #define ODPAT_SET_TP_SRC 10 /* TCP/UDP source port. */
208 #define ODPAT_SET_TP_DST 11 /* TCP/UDP destination port. */
209 #define ODPAT_N_ACTIONS 12
211 struct odp_action_output {
212 __u16 type; /* ODPAT_OUTPUT. */
213 __u16 port; /* Output port. */
218 struct odp_action_output_group {
219 __u16 type; /* ODPAT_OUTPUT_GROUP. */
220 __u16 group; /* Group number. */
225 struct odp_action_controller {
226 __u16 type; /* ODPAT_OUTPUT_CONTROLLER. */
228 __u32 arg; /* Copied to struct odp_msg 'arg' member. */
231 /* Action structure for ODPAT_SET_VLAN_VID. */
232 struct odp_action_vlan_vid {
233 __u16 type; /* ODPAT_SET_VLAN_VID. */
234 __be16 vlan_vid; /* VLAN id. */
239 /* Action structure for ODPAT_SET_VLAN_PCP. */
240 struct odp_action_vlan_pcp {
241 __u16 type; /* ODPAT_SET_VLAN_PCP. */
242 __u8 vlan_pcp; /* VLAN priority. */
248 /* Action structure for ODPAT_SET_DL_SRC/DST. */
249 struct odp_action_dl_addr {
250 __u16 type; /* ODPAT_SET_DL_SRC/DST. */
251 __u8 dl_addr[ETH_ALEN]; /* Ethernet address. */
254 /* Action structure for ODPAT_SET_NW_SRC/DST. */
255 struct odp_action_nw_addr {
256 __u16 type; /* ODPAT_SET_TW_SRC/DST. */
258 __be32 nw_addr; /* IP address. */
261 /* Action structure for ODPAT_SET_TP_SRC/DST. */
262 struct odp_action_tp_port {
263 __u16 type; /* ODPAT_SET_TP_SRC/DST. */
264 __be16 tp_port; /* TCP/UDP port. */
271 struct odp_action_output output;
272 struct odp_action_output_group output_group;
273 struct odp_action_controller controller;
274 struct odp_action_vlan_vid vlan_vid;
275 struct odp_action_vlan_pcp vlan_pcp;
276 struct odp_action_dl_addr dl_addr;
277 struct odp_action_nw_addr nw_addr;
278 struct odp_action_tp_port tp_port;
286 union odp_action *actions;
293 /* Values below this cutoff are 802.3 packets and the two bytes
294 * following MAC addresses are used as a frame length. Otherwise, the
295 * two bytes are used as the Ethernet type.
297 #define ODP_DL_TYPE_ETH2_CUTOFF 0x0600
299 /* Value of dl_type to indicate that the frame does not include an
302 #define ODP_DL_TYPE_NOT_ETH_TYPE 0x05ff
304 /* The VLAN id is 12-bits, so we can use the entire 16 bits to indicate
305 * special conditions. All ones indicates that no VLAN id was set.
307 #define ODP_VLAN_NONE 0xffff
309 #endif /* openvswitch/datapath-protocol.h */