ofproto/ofproto.h

   1 /*
   2  * Copyright (c) 2009, 2010 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 "tag.h"
  28
  29 #ifdef  __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 struct odp_actions;
  34 struct ofhooks;
  35 struct ofproto;
  36 struct svec;
  37
  38 enum {
  39     DP_GROUP_FLOOD = 0,
  40     DP_GROUP_ALL = 1
  41 };
  42
  43 struct ofexpired {
  44     flow_t flow;
  45     uint64_t packet_count;      /* Packets from subrules. */
  46     uint64_t byte_count;        /* Bytes from subrules. */
  47     long long int used;         /* Last-used time (0 if never used). */
  48 };
  49
  50 struct ofproto_sflow_options {
  51     struct svec targets;
  52     uint32_t sampling_rate;
  53     uint32_t polling_interval;
  54     uint32_t header_len;
  55     uint32_t sub_id;
  56     char *agent_device;
  57     char *control_ip;
  58 };
  59
  60 /* How the switch should act if the controller cannot be contacted. */
  61 enum ofproto_fail_mode {
  62     OFPROTO_FAIL_SECURE,        /* Preserve flow table. */
  63     OFPROTO_FAIL_STANDALONE     /* Act as a standalone switch. */
  64 };
  65
  66 enum ofproto_band {
  67     OFPROTO_IN_BAND,            /* In-band connection to controller. */
  68     OFPROTO_OUT_OF_BAND         /* Out-of-band connection to controller. */
  69 };
  70
  71 struct ofproto_controller {
  72     char *target;               /* e.g. "tcp:127.0.0.1" */
  73     int max_backoff;            /* Maximum reconnection backoff, in seconds. */
  74     int probe_interval;         /* Max idle time before probing, in seconds. */
  75     enum ofproto_band band;      /* In-band or out-of-band? */
  76
  77     /* Discovery options. */
  78     char *accept_re;            /* Regexp for acceptable controllers.  */
  79     bool update_resolv_conf;    /* Update /etc/resolv.conf? */
  80
  81     /* OpenFlow packet-in rate-limiting. */
  82     int rate_limit;             /* Max packet-in rate in packets per second. */
  83     int burst_limit;            /* Limit on accumulating packet credits. */
  84 };
  85
  86 #define DEFAULT_MFR_DESC "Nicira Networks, Inc."
  87 #define DEFAULT_HW_DESC "Open vSwitch"
  88 #define DEFAULT_SW_DESC VERSION BUILDNR
  89 #define DEFAULT_SERIAL_DESC "None"
  90 #define DEFAULT_DP_DESC "None"
  91
  92 int ofproto_create(const char *datapath, const char *datapath_type,
  93                    const struct ofhooks *, void *aux,
  94                    struct ofproto **ofprotop);
  95 void ofproto_destroy(struct ofproto *);
  96 int ofproto_run(struct ofproto *);
  97 int ofproto_run1(struct ofproto *);
  98 int ofproto_run2(struct ofproto *, bool revalidate_all);
  99 void ofproto_wait(struct ofproto *);
 100 bool ofproto_is_alive(const struct ofproto *);
 101
 102 int ofproto_port_del(struct ofproto *, uint16_t odp_port);
 103
 104 /* Configuration. */
 105 void ofproto_set_datapath_id(struct ofproto *, uint64_t datapath_id);
 106 void ofproto_set_controllers(struct ofproto *,
 107                              const struct ofproto_controller *, size_t n);
 108 void ofproto_set_fail_mode(struct ofproto *, enum ofproto_fail_mode fail_mode);
 109 void ofproto_reconnect_controllers(struct ofproto *);
 110 void ofproto_set_extra_in_band_remotes(struct ofproto *,
 111                                        const struct sockaddr_in *, size_t n);
 112 void ofproto_set_desc(struct ofproto *,
 113                       const char *mfr_desc, const char *hw_desc,
 114                       const char *sw_desc, const char *serial_desc,
 115                       const char *dp_desc);
 116 int ofproto_set_snoops(struct ofproto *, const struct svec *snoops);
 117 int ofproto_set_netflow(struct ofproto *,
 118                         const struct netflow_options *nf_options);
 119 void ofproto_set_sflow(struct ofproto *, const struct ofproto_sflow_options *);
 120
 121 /* Configuration querying. */
 122 uint64_t ofproto_get_datapath_id(const struct ofproto *);
 123 bool ofproto_has_primary_controller(const struct ofproto *);
 124 enum ofproto_fail_mode ofproto_get_fail_mode(const struct ofproto *);
 125 void ofproto_get_listeners(const struct ofproto *, struct svec *);
 126 void ofproto_get_snoops(const struct ofproto *, struct svec *);
 127 void ofproto_get_all_flows(struct ofproto *p, struct ds *);
 128
 129 /* Functions for use by ofproto implementation modules, not by clients. */
 130 int ofproto_send_packet(struct ofproto *, const flow_t *,
 131                         const union ofp_action *, size_t n_actions,
 132                         const struct ofpbuf *);
 133 void ofproto_add_flow(struct ofproto *, const flow_t *, uint32_t wildcards,
 134                       unsigned int priority,
 135                       const union ofp_action *, size_t n_actions,
 136                       int idle_timeout);
 137 void ofproto_delete_flow(struct ofproto *, const flow_t *, uint32_t wildcards,
 138                          unsigned int priority);
 139 void ofproto_flush_flows(struct ofproto *);
 140
 141 /* Hooks for ovs-vswitchd. */
 142 struct ofhooks {
 143     void (*port_changed_cb)(enum ofp_port_reason, const struct ofp_phy_port *,
 144                             void *aux);
 145     bool (*normal_cb)(const flow_t *, const struct ofpbuf *packet,
 146                       struct odp_actions *, tag_type *,
 147                       uint16_t *nf_output_iface, void *aux);
 148     void (*account_flow_cb)(const flow_t *, tag_type tags,
 149                             const union odp_action *, size_t n_actions,
 150                             unsigned long long int n_bytes, void *aux);
 151     void (*account_checkpoint_cb)(void *aux);
 152 };
 153 void ofproto_revalidate(struct ofproto *, tag_type);
 154 struct tag_set *ofproto_get_revalidate_set(struct ofproto *);
 155
 156 #ifdef  __cplusplus
 157 }
 158 #endif
 159
 160 #endif /* ofproto.h */