2 * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
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:
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
20 #include "classifier.h"
24 #include "ofp-errors.h"
26 #include "openflow/nicira-ext.h"
27 #include "openvswitch/types.h"
32 struct ofputil_flow_removed;
33 struct ofputil_packet_in;
34 struct ofputil_phy_port;
39 /* ofproto supports two kinds of OpenFlow connections:
41 * - "Primary" connections to ordinary OpenFlow controllers. ofproto
42 * maintains persistent connections to these controllers and by default
43 * sends them asynchronous messages such as packet-ins.
45 * - "Service" connections, e.g. from ovs-ofctl. When these connections
46 * drop, it is the other side's responsibility to reconnect them if
47 * necessary. ofproto does not send them asynchronous messages by default.
49 * Currently, active (tcp, ssl, unix) connections are always "primary"
50 * connections and passive (ptcp, pssl, punix) connections are always "service"
51 * connections. There is no inherent reason for this, but it reflects the
55 OFCONN_PRIMARY, /* An ordinary OpenFlow controller. */
56 OFCONN_SERVICE /* A service connection, e.g. "ovs-ofctl". */
59 /* The type of an OpenFlow asynchronous message. */
60 enum ofconn_async_msg_type {
61 OAM_PACKET_IN, /* OFPT_PACKET_IN or NXT_PACKET_IN. */
62 OAM_PORT_STATUS, /* OFPT_PORT_STATUS. */
63 OAM_FLOW_REMOVED, /* OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED. */
68 struct connmgr *connmgr_create(struct ofproto *ofproto,
69 const char *dpif_name, const char *local_name);
70 void connmgr_destroy(struct connmgr *);
72 void connmgr_run(struct connmgr *,
73 bool (*handle_openflow)(struct ofconn *,
74 struct ofpbuf *ofp_msg));
75 void connmgr_wait(struct connmgr *, bool handling_openflow);
77 void connmgr_get_memory_usage(const struct connmgr *, struct simap *usage);
79 struct ofproto *ofconn_get_ofproto(const struct ofconn *);
81 void connmgr_retry(struct connmgr *);
83 /* OpenFlow configuration. */
84 bool connmgr_has_controllers(const struct connmgr *);
85 void connmgr_get_controller_info(struct connmgr *, struct shash *);
86 void connmgr_free_controller_info(struct shash *);
87 void connmgr_set_controllers(struct connmgr *,
88 const struct ofproto_controller[], size_t n,
89 uint32_t allowed_versions);
90 void connmgr_reconnect(const struct connmgr *);
92 int connmgr_set_snoops(struct connmgr *, const struct sset *snoops);
93 bool connmgr_has_snoops(const struct connmgr *);
94 void connmgr_get_snoops(const struct connmgr *, struct sset *snoops);
96 /* Individual connections to OpenFlow controllers. */
97 enum ofconn_type ofconn_get_type(const struct ofconn *);
99 enum nx_role ofconn_get_role(const struct ofconn *);
100 void ofconn_set_role(struct ofconn *, enum nx_role);
102 enum ofputil_protocol ofconn_get_protocol(const struct ofconn *);
103 void ofconn_set_protocol(struct ofconn *, enum ofputil_protocol);
105 enum nx_packet_in_format ofconn_get_packet_in_format(struct ofconn *);
106 void ofconn_set_packet_in_format(struct ofconn *, enum nx_packet_in_format);
108 void ofconn_set_controller_id(struct ofconn *, uint16_t controller_id);
110 void ofconn_set_invalid_ttl_to_controller(struct ofconn *, bool);
111 bool ofconn_get_invalid_ttl_to_controller(struct ofconn *);
113 int ofconn_get_miss_send_len(const struct ofconn *);
114 void ofconn_set_miss_send_len(struct ofconn *, int miss_send_len);
116 void ofconn_set_async_config(struct ofconn *,
117 const uint32_t master_masks[OAM_N_TYPES],
118 const uint32_t slave_masks[OAM_N_TYPES]);
120 void ofconn_send_reply(const struct ofconn *, struct ofpbuf *);
121 void ofconn_send_replies(const struct ofconn *, struct list *);
122 void ofconn_send_error(const struct ofconn *, const struct ofp_header *request,
125 enum ofperr ofconn_pktbuf_retrieve(struct ofconn *, uint32_t id,
126 struct ofpbuf **bufferp, uint16_t *in_port);
128 bool ofconn_has_pending_opgroups(const struct ofconn *);
129 void ofconn_add_opgroup(struct ofconn *, struct list *);
130 void ofconn_remove_opgroup(struct ofconn *, struct list *,
131 const struct ofp_header *request, int error);
133 /* Sending asynchronous messages. */
134 void connmgr_send_port_status(struct connmgr *,
135 const struct ofputil_phy_port *, uint8_t reason);
136 void connmgr_send_flow_removed(struct connmgr *,
137 const struct ofputil_flow_removed *);
138 void connmgr_send_packet_in(struct connmgr *,
139 const struct ofputil_packet_in *);
141 /* Fail-open settings. */
142 enum ofproto_fail_mode connmgr_get_fail_mode(const struct connmgr *);
143 void connmgr_set_fail_mode(struct connmgr *, enum ofproto_fail_mode);
145 /* Fail-open implementation. */
146 int connmgr_get_max_probe_interval(const struct connmgr *);
147 bool connmgr_is_any_controller_connected(const struct connmgr *);
148 bool connmgr_is_any_controller_admitted(const struct connmgr *);
149 int connmgr_failure_duration(const struct connmgr *);
151 /* In-band configuration. */
152 void connmgr_set_extra_in_band_remotes(struct connmgr *,
153 const struct sockaddr_in *, size_t);
154 void connmgr_set_in_band_queue(struct connmgr *, int queue_id);
156 /* In-band implementation. */
157 bool connmgr_msg_in_hook(struct connmgr *, const struct flow *,
158 const struct ofpbuf *packet);
159 bool connmgr_may_set_up_flow(struct connmgr *, const struct flow *,
160 const struct nlattr *odp_actions,
163 /* Fail-open and in-band implementation. */
164 void connmgr_flushed(struct connmgr *);
166 /* A flow monitor managed by NXST_FLOW_MONITOR and related requests. */
168 struct ofconn *ofconn; /* Owning 'ofconn'. */
169 struct hmap_node ofconn_node; /* In ofconn's 'monitors' hmap. */
172 enum nx_flow_monitor_flags flags;
177 struct minimatch match;
180 struct ofputil_flow_monitor_request;
182 enum ofperr ofmonitor_create(const struct ofputil_flow_monitor_request *,
183 struct ofconn *, struct ofmonitor **);
184 struct ofmonitor *ofmonitor_lookup(struct ofconn *, uint32_t id);
185 void ofmonitor_destroy(struct ofmonitor *);
187 void ofmonitor_report(struct connmgr *, struct rule *,
188 enum nx_flow_update_event, enum ofp_flow_removed_reason,
189 const struct ofconn *abbrev_ofconn, ovs_be32 abbrev_xid);
190 void ofmonitor_flush(struct connmgr *);
192 void ofmonitor_collect_resume_rules(struct ofmonitor *, uint64_t seqno,
194 void ofmonitor_compose_refresh_updates(struct list *rules, struct list *msgs);
196 #endif /* connmgr.h */