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1/*
2 * include/net/9p/transport.h
3 *
4 * Transport Definition
5 *
6 * Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
7 * Copyright (C) 2004-2008 by Eric Van Hensbergen <ericvh@gmail.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2
11 * as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to:
20 * Free Software Foundation
21 * 51 Franklin Street, Fifth Floor
22 * Boston, MA 02111-1301 USA
23 *
24 */
25
26#ifndef NET_9P_TRANSPORT_H
27#define NET_9P_TRANSPORT_H
28
29/**
30 * struct p9_trans_module - transport module interface
31 * @list: used to maintain a list of currently available transports
32 * @name: the human-readable name of the transport
33 * @maxsize: transport provided maximum packet size
34 * @def: set if this transport should be considered the default
35 * @create: member function to create a new connection on this transport
36 * @request: member function to issue a request to the transport
37 * @cancel: member function to cancel a request (if it hasn't been sent)
38 *
39 * This is the basic API for a transport module which is registered by the
40 * transport module with the 9P core network module and used by the client
41 * to instantiate a new connection on a transport.
42 *
43 * BUGS: the transport module list isn't protected.
44 */
45
46struct p9_trans_module {
47 struct list_head list;
48 char *name; /* name of transport */
49 int maxsize; /* max message size of transport */
50 int def; /* this transport should be default */
51 struct module *owner;
52 int (*create)(struct p9_client *, const char *, char *);
53 void (*close) (struct p9_client *);
54 int (*request) (struct p9_client *, struct p9_req_t *req);
55 int (*cancel) (struct p9_client *, struct p9_req_t *req);
56};
57
58void v9fs_register_trans(struct p9_trans_module *m);
59void v9fs_unregister_trans(struct p9_trans_module *m);
60struct p9_trans_module *v9fs_get_trans_by_name(const substring_t *name);
61struct p9_trans_module *v9fs_get_default_trans(void);
62void v9fs_put_trans(struct p9_trans_module *m);
63#endif /* NET_9P_TRANSPORT_H */