2 * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 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"
27 #include "ofproto-provider.h"
28 #include "openflow/nicira-ext.h"
29 #include "openvswitch/types.h"
37 /* ofproto supports two kinds of OpenFlow connections:
39 * - "Primary" connections to ordinary OpenFlow controllers. ofproto
40 * maintains persistent connections to these controllers and by default
41 * sends them asynchronous messages such as packet-ins.
43 * - "Service" connections, e.g. from ovs-ofctl. When these connections
44 * drop, it is the other side's responsibility to reconnect them if
45 * necessary. ofproto does not send them asynchronous messages by default.
47 * Currently, active (tcp, ssl, unix) connections are always "primary"
48 * connections and passive (ptcp, pssl, punix) connections are always "service"
49 * connections. There is no inherent reason for this, but it reflects the
53 OFCONN_PRIMARY, /* An ordinary OpenFlow controller. */
54 OFCONN_SERVICE /* A service connection, e.g. "ovs-ofctl". */
57 /* A packet_in, with extra members to assist in queuing and routing it. */
58 struct ofproto_packet_in {
59 struct ofputil_packet_in up;
60 struct ovs_list list_node; /* For queuing. */
61 uint16_t controller_id; /* Controller ID to send to. */
62 int max_len; /* From action, or -1 if none. */
66 struct connmgr *connmgr_create(struct ofproto *ofproto,
67 const char *dpif_name, const char *local_name);
68 void connmgr_destroy(struct connmgr *);
70 void connmgr_run(struct connmgr *,
71 void (*handle_openflow)(struct ofconn *,
72 const struct ofpbuf *ofp_msg));
73 void connmgr_wait(struct connmgr *);
75 void connmgr_get_memory_usage(const struct connmgr *, struct simap *usage);
77 struct ofproto *ofconn_get_ofproto(const struct ofconn *);
79 void connmgr_retry(struct connmgr *);
81 /* OpenFlow configuration. */
82 bool connmgr_has_controllers(const struct connmgr *);
83 void connmgr_get_controller_info(struct connmgr *, struct shash *);
84 void connmgr_free_controller_info(struct shash *);
85 void connmgr_set_controllers(struct connmgr *,
86 const struct ofproto_controller[], size_t n,
87 uint32_t allowed_versions);
88 void connmgr_reconnect(const struct connmgr *);
90 int connmgr_set_snoops(struct connmgr *, const struct sset *snoops);
91 bool connmgr_has_snoops(const struct connmgr *);
92 void connmgr_get_snoops(const struct connmgr *, struct sset *snoops);
94 /* Individual connections to OpenFlow controllers. */
95 enum ofconn_type ofconn_get_type(const struct ofconn *);
97 bool ofconn_get_master_election_id(const struct ofconn *, uint64_t *idp);
98 bool ofconn_set_master_election_id(struct ofconn *, uint64_t);
99 enum ofp12_controller_role ofconn_get_role(const struct ofconn *);
100 void ofconn_set_role(struct ofconn *, enum ofp12_controller_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 struct ofputil_async_cfg *);
118 struct ofputil_async_cfg ofconn_get_async_config(const struct ofconn *);
120 void ofconn_send_reply(const struct ofconn *, struct ofpbuf *);
121 void ofconn_send_replies(const struct ofconn *, struct ovs_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 dp_packet **bufferp, ofp_port_t *in_port);
130 struct ofp_bundle *ofconn_get_bundle(struct ofconn *, uint32_t id);
131 enum ofperr ofconn_insert_bundle(struct ofconn *, struct ofp_bundle *);
132 enum ofperr ofconn_remove_bundle(struct ofconn *, struct ofp_bundle *);
134 /* Logging flow_mod summaries. */
135 void ofconn_report_flow_mod(struct ofconn *, enum ofp_flow_mod_command);
137 /* Sending asynchronous messages. */
138 bool connmgr_wants_packet_in_on_miss(struct connmgr *mgr);
139 void connmgr_send_port_status(struct connmgr *, struct ofconn *source,
140 const struct ofputil_phy_port *, uint8_t reason);
141 void connmgr_send_flow_removed(struct connmgr *,
142 const struct ofputil_flow_removed *);
143 void connmgr_send_packet_in(struct connmgr *,
144 const struct ofproto_packet_in *);
145 void ofconn_send_role_status(struct ofconn *ofconn, uint32_t role,
148 void connmgr_send_requestforward(struct connmgr *, const struct ofconn *source,
149 const struct ofputil_requestforward *);
151 /* Fail-open settings. */
152 enum ofproto_fail_mode connmgr_get_fail_mode(const struct connmgr *);
153 void connmgr_set_fail_mode(struct connmgr *, enum ofproto_fail_mode);
155 /* Fail-open implementation. */
156 int connmgr_get_max_probe_interval(const struct connmgr *);
157 bool connmgr_is_any_controller_connected(const struct connmgr *);
158 bool connmgr_is_any_controller_admitted(const struct connmgr *);
159 int connmgr_failure_duration(const struct connmgr *);
161 /* In-band configuration. */
162 void connmgr_set_extra_in_band_remotes(struct connmgr *,
163 const struct sockaddr_in *, size_t);
164 void connmgr_set_in_band_queue(struct connmgr *, int queue_id);
166 /* In-band implementation. */
167 bool connmgr_has_in_band(struct connmgr *);
169 /* Fail-open and in-band implementation. */
170 void connmgr_flushed(struct connmgr *);
172 int connmgr_count_hidden_rules(const struct connmgr *);
174 /* A flow monitor managed by NXST_FLOW_MONITOR and related requests. */
176 struct ofconn *ofconn; /* Owning 'ofconn'. */
177 struct hmap_node ofconn_node; /* In ofconn's 'monitors' hmap. */
180 enum nx_flow_monitor_flags flags;
185 struct minimatch match;
188 struct ofputil_flow_monitor_request;
190 enum ofperr ofmonitor_create(const struct ofputil_flow_monitor_request *,
191 struct ofconn *, struct ofmonitor **)
192 OVS_REQUIRES(ofproto_mutex);
193 struct ofmonitor *ofmonitor_lookup(struct ofconn *, uint32_t id)
194 OVS_REQUIRES(ofproto_mutex);
195 void ofmonitor_destroy(struct ofmonitor *)
196 OVS_REQUIRES(ofproto_mutex);
198 void ofmonitor_report(struct connmgr *, struct rule *,
199 enum nx_flow_update_event, enum ofp_flow_removed_reason,
200 const struct ofconn *abbrev_ofconn, ovs_be32 abbrev_xid,
201 const struct rule_actions *old_actions)
202 OVS_REQUIRES(ofproto_mutex);
203 void ofmonitor_flush(struct connmgr *) OVS_REQUIRES(ofproto_mutex);
206 struct rule_collection;
207 void ofmonitor_collect_resume_rules(struct ofmonitor *, uint64_t seqno,
208 struct rule_collection *)
209 OVS_REQUIRES(ofproto_mutex);
210 void ofmonitor_compose_refresh_updates(struct rule_collection *rules,
211 struct ovs_list *msgs)
212 OVS_REQUIRES(ofproto_mutex);
214 #endif /* connmgr.h */