ofproto/ofproto.h

   1 /*
   2  * Copyright (c) 2009, 2010, 2011 Nicira Networks.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef OFPROTO_H
  18 #define OFPROTO_H 1
  19
  20 #include <sys/types.h>
  21 #include <netinet/in.h>
  22 #include <stdbool.h>
  23 #include <stddef.h>
  24 #include <stdint.h>
  25 #include "flow.h"
  26 #include "netflow.h"
  27 #include "sset.h"
  28 #include "tag.h"
  29
  30 #ifdef  __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 struct cfm_settings;
  35 struct cls_rule;
  36 struct netdev;
  37 struct ofproto;
  38 struct shash;
  39
  40 struct ofproto_controller_info {
  41     bool is_connected;
  42     enum nx_role role;
  43     struct {
  44         const char *keys[4];
  45         const char *values[4];
  46         size_t n;
  47     } pairs;
  48 };
  49
  50 struct ofexpired {
  51     struct flow flow;
  52     uint64_t packet_count;      /* Packets from subrules. */
  53     uint64_t byte_count;        /* Bytes from subrules. */
  54     long long int used;         /* Last-used time (0 if never used). */
  55 };
  56
  57 struct ofproto_sflow_options {
  58     struct sset targets;
  59     uint32_t sampling_rate;
  60     uint32_t polling_interval;
  61     uint32_t header_len;
  62     uint32_t sub_id;
  63     char *agent_device;
  64     char *control_ip;
  65 };
  66
  67 /* How the switch should act if the controller cannot be contacted. */
  68 enum ofproto_fail_mode {
  69     OFPROTO_FAIL_SECURE,        /* Preserve flow table. */
  70     OFPROTO_FAIL_STANDALONE     /* Act as a standalone switch. */
  71 };
  72
  73 enum ofproto_band {
  74     OFPROTO_IN_BAND,            /* In-band connection to controller. */
  75     OFPROTO_OUT_OF_BAND         /* Out-of-band connection to controller. */
  76 };
  77
  78 struct ofproto_controller {
  79     char *target;               /* e.g. "tcp:127.0.0.1" */
  80     int max_backoff;            /* Maximum reconnection backoff, in seconds. */
  81     int probe_interval;         /* Max idle time before probing, in seconds. */
  82     enum ofproto_band band;      /* In-band or out-of-band? */
  83
  84     /* OpenFlow packet-in rate-limiting. */
  85     int rate_limit;             /* Max packet-in rate in packets per second. */
  86     int burst_limit;            /* Limit on accumulating packet credits. */
  87 };
  88
  89 #define DEFAULT_MFR_DESC "Nicira Networks, Inc."
  90 #define DEFAULT_HW_DESC "Open vSwitch"
  91 #define DEFAULT_SW_DESC VERSION BUILDNR
  92 #define DEFAULT_SERIAL_DESC "None"
  93 #define DEFAULT_DP_DESC "None"
  94
  95 void ofproto_enumerate_types(struct sset *types);
  96 const char *ofproto_normalize_type(const char *);
  97
  98 int ofproto_enumerate_names(const char *type, struct sset *names);
  99 void ofproto_parse_name(const char *name, char **dp_name, char **dp_type);
 100
 101 int ofproto_create(const char *datapath, const char *datapath_type,
 102                    struct ofproto **ofprotop);
 103 void ofproto_destroy(struct ofproto *);
 104 int ofproto_delete(const char *name, const char *type);
 105
 106 int ofproto_run(struct ofproto *);
 107 void ofproto_wait(struct ofproto *);
 108 bool ofproto_is_alive(const struct ofproto *);
 109
 110 /* A port within an OpenFlow switch.
 111  *
 112  * 'name' and 'type' are suitable for passing to netdev_open(). */
 113 struct ofproto_port {
 114     char *name;                 /* Network device name, e.g. "eth0". */
 115     char *type;                 /* Network device type, e.g. "system". */
 116     uint16_t ofp_port;          /* OpenFlow port number. */
 117 };
 118 void ofproto_port_clone(struct ofproto_port *, const struct ofproto_port *);
 119 void ofproto_port_destroy(struct ofproto_port *);
 120
 121 struct ofproto_port_dump {
 122     const struct ofproto *ofproto;
 123     int error;
 124     void *state;
 125 };
 126 void ofproto_port_dump_start(struct ofproto_port_dump *,
 127                              const struct ofproto *);
 128 bool ofproto_port_dump_next(struct ofproto_port_dump *, struct ofproto_port *);
 129 int ofproto_port_dump_done(struct ofproto_port_dump *);
 130
 131 /* Iterates through each OFPROTO_PORT in OFPROTO, using DUMP as state.
 132  *
 133  * Arguments all have pointer type.
 134  *
 135  * If you break out of the loop, then you need to free the dump structure by
 136  * hand using ofproto_port_dump_done(). */
 137 #define OFPROTO_PORT_FOR_EACH(OFPROTO_PORT, DUMP, OFPROTO)  \
 138     for (ofproto_port_dump_start(DUMP, OFPROTO);            \
 139          (ofproto_port_dump_next(DUMP, OFPROTO_PORT)        \
 140           ? true                                            \
 141           : (ofproto_port_dump_done(DUMP), false));         \
 142         )
 143
 144 #define OFPROTO_FLOW_EVICTON_THRESHOLD_DEFAULT  1000
 145 #define OFPROTO_FLOW_EVICTION_THRESHOLD_MIN     100
 146
 147 int ofproto_port_add(struct ofproto *, struct netdev *, uint16_t *ofp_portp);
 148 int ofproto_port_del(struct ofproto *, uint16_t ofp_port);
 149
 150 int ofproto_port_query_by_name(const struct ofproto *, const char *devname,
 151                                struct ofproto_port *);
 152
 153 /* Top-level configuration. */
 154 void ofproto_set_datapath_id(struct ofproto *, uint64_t datapath_id);
 155 void ofproto_set_controllers(struct ofproto *,
 156                              const struct ofproto_controller *, size_t n);
 157 void ofproto_set_fail_mode(struct ofproto *, enum ofproto_fail_mode fail_mode);
 158 void ofproto_reconnect_controllers(struct ofproto *);
 159 void ofproto_set_extra_in_band_remotes(struct ofproto *,
 160                                        const struct sockaddr_in *, size_t n);
 161 void ofproto_set_in_band_queue(struct ofproto *, int queue_id);
 162 void ofproto_set_flow_eviction_threshold(struct ofproto *, unsigned threshold);
 163 void ofproto_set_forward_bpdu(struct ofproto *, bool forward_bpdu);
 164 void ofproto_set_desc(struct ofproto *,
 165                       const char *mfr_desc, const char *hw_desc,
 166                       const char *sw_desc, const char *serial_desc,
 167                       const char *dp_desc);
 168 int ofproto_set_snoops(struct ofproto *, const struct sset *snoops);
 169 int ofproto_set_netflow(struct ofproto *,
 170                         const struct netflow_options *nf_options);
 171 int ofproto_set_sflow(struct ofproto *, const struct ofproto_sflow_options *);
 172
 173 /* Configuration of ports. */
 174
 175 void ofproto_port_unregister(struct ofproto *, uint16_t ofp_port);
 176
 177 void ofproto_port_clear_cfm(struct ofproto *, uint16_t ofp_port);
 178 void ofproto_port_set_cfm(struct ofproto *, uint16_t ofp_port,
 179                           const struct cfm_settings *);
 180 int ofproto_port_is_lacp_current(struct ofproto *, uint16_t ofp_port);
 181
 182 /* Configuration of bundles. */
 183 struct ofproto_bundle_settings {
 184     char *name;                 /* For use in log messages. */
 185
 186     uint16_t *slaves;           /* OpenFlow port numbers for slaves. */
 187     size_t n_slaves;
 188
 189     int vlan;                   /* VLAN if access port, -1 if trunk port. */
 190     unsigned long *trunks;      /* vlan_bitmap, NULL to trunk all VLANs. */
 191
 192     struct bond_settings *bond; /* Must be nonnull iff if n_slaves > 1. */
 193     uint32_t *bond_stable_ids;  /* Array of n_slaves elements. */
 194
 195     struct lacp_settings *lacp;              /* Nonnull to enable LACP. */
 196     struct lacp_slave_settings *lacp_slaves; /* Array of n_slaves elements. */
 197 };
 198
 199 int ofproto_bundle_register(struct ofproto *, void *aux,
 200                             const struct ofproto_bundle_settings *);
 201 int ofproto_bundle_unregister(struct ofproto *, void *aux);
 202
 203 /* Configuration of mirrors. */
 204 struct ofproto_mirror_settings {
 205     /* Name for log messages. */
 206     char *name;
 207
 208     /* Bundles that select packets for mirroring upon ingress.  */
 209     void **srcs;                /* A set of registered ofbundle handles. */
 210     size_t n_srcs;
 211
 212     /* Bundles that select packets for mirroring upon egress.  */
 213     void **dsts;                /* A set of registered ofbundle handles. */
 214     size_t n_dsts;
 215
 216     /* VLANs of packets to select for mirroring. */
 217     unsigned long *src_vlans;   /* vlan_bitmap, NULL selects all VLANs. */
 218
 219     /* Output (mutually exclusive). */
 220     void *out_bundle;           /* A registered ofbundle handle or NULL. */
 221     uint16_t out_vlan;          /* Output VLAN, only if out_bundle is NULL. */
 222 };
 223
 224 int ofproto_mirror_register(struct ofproto *, void *aux,
 225                             const struct ofproto_mirror_settings *);
 226 int ofproto_mirror_unregister(struct ofproto *, void *aux);
 227
 228 int ofproto_set_flood_vlans(struct ofproto *, unsigned long *flood_vlans);
 229 bool ofproto_is_mirror_output_bundle(struct ofproto *, void *aux);
 230
 231 /* Configuration querying. */
 232 bool ofproto_has_snoops(const struct ofproto *);
 233 void ofproto_get_snoops(const struct ofproto *, struct sset *);
 234 void ofproto_get_all_flows(struct ofproto *p, struct ds *);
 235 void ofproto_get_netflow_ids(const struct ofproto *,
 236                              uint8_t *engine_type, uint8_t *engine_id);
 237 int ofproto_port_get_cfm_fault(const struct ofproto *, uint16_t ofp_port);
 238
 239 void ofproto_get_ofproto_controller_info(const struct ofproto *, struct shash *);
 240 void ofproto_free_ofproto_controller_info(struct shash *);
 241
 242 #ifdef  __cplusplus
 243 }
 244 #endif
 245
 246 #endif /* ofproto.h */