1 /* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
4 * We are making the OpenFlow specification and associated documentation
5 * (Software) available for public use and benefit with the expectation
6 * that others will use, modify and enhance the Software and contribute
7 * those enhancements back to the community. However, since we would
8 * like to make the Software available for broadest use, with as few
9 * restrictions as possible permission is hereby granted, free of
10 * charge, to any person obtaining a copy of this Software to deal in
11 * the Software under the copyrights without restriction, including
12 * without limitation the rights to use, copy, modify, merge, publish,
13 * distribute, sublicense, and/or sell copies of the Software, and to
14 * permit persons to whom the Software is furnished to do so, subject to
15 * the following conditions:
17 * The above copyright notice and this permission notice shall be
18 * included in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
24 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
25 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
26 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 * The name and trademarks of copyright holder(s) may NOT be used in
30 * advertising or publicity pertaining to the Software or any
31 * derivatives without specific, written prior permission.
42 /* A wrapper around vconn that provides queuing and optionally reliability.
44 * An rconn maintains a message transmission queue of bounded length specified
45 * by the caller. The rconn does not guarantee reliable delivery of
46 * queued messages: all queued messages are dropped when reconnection becomes
49 * An rconn optionally provides reliable communication, in this sense: the
50 * rconn will re-connect, with exponential backoff, when the underlying vconn
56 struct rconn *rconn_new(const char *name, int txq_limit,
57 int inactivity_probe_interval, int max_backoff);
58 struct rconn *rconn_new_from_vconn(const char *name, int txq_limit,
60 struct rconn *rconn_create(int txq_limit, int inactivity_probe_interval,
62 int rconn_connect(struct rconn *, const char *name);
63 void rconn_connect_unreliably(struct rconn *,
64 const char *name, struct vconn *vconn);
65 void rconn_disconnect(struct rconn *);
66 void rconn_destroy(struct rconn *);
68 void rconn_run(struct rconn *);
69 void rconn_run_wait(struct rconn *);
70 struct buffer *rconn_recv(struct rconn *);
71 void rconn_recv_wait(struct rconn *);
72 int rconn_send(struct rconn *, struct buffer *);
73 int rconn_force_send(struct rconn *, struct buffer *);
74 bool rconn_is_full(const struct rconn *);
75 unsigned int rconn_packets_sent(const struct rconn *);
77 const char *rconn_get_name(const struct rconn *);
78 bool rconn_is_alive(const struct rconn *);
79 bool rconn_is_connected(const struct rconn *);
80 int rconn_disconnected_duration(const struct rconn *);
81 bool rconn_is_connectivity_questionable(struct rconn *);
83 uint32_t rconn_get_ip(const struct rconn *);