1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * include/net/9p/transport.h
 4 *
 5 * Transport Definition
 6 *
 7 *  Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
 8 *  Copyright (C) 2004-2008 by Eric Van Hensbergen <ericvh@gmail.com>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 9 */
10
11#ifndef NET_9P_TRANSPORT_H
12#define NET_9P_TRANSPORT_H
13
14#define P9_DEF_MIN_RESVPORT	(665U)
15#define P9_DEF_MAX_RESVPORT	(1023U)
16
17/**
18 * struct p9_trans_module - transport module interface
19 * @list: used to maintain a list of currently available transports
20 * @name: the human-readable name of the transport
21 * @maxsize: transport provided maximum packet size
22 * @def: set if this transport should be considered the default
23 * @create: member function to create a new connection on this transport
24 * @close: member function to discard a connection on this transport
25 * @request: member function to issue a request to the transport
26 * @cancel: member function to cancel a request (if it hasn't been sent)
27 * @cancelled: member function to notify that a cancelled request will not
28 *             receive a reply
29 *
30 * This is the basic API for a transport module which is registered by the
31 * transport module with the 9P core network module and used by the client
32 * to instantiate a new connection on a transport.
33 *
34 * The transport module list is protected by v9fs_trans_lock.
35 */
36
37struct p9_trans_module {
38	struct list_head list;
39	char *name;		/* name of transport */
40	int maxsize;		/* max message size of transport */
41	int def;		/* this transport should be default */
42	struct module *owner;
43	int (*create)(struct p9_client *, const char *, char *);
44	void (*close) (struct p9_client *);
45	int (*request) (struct p9_client *, struct p9_req_t *req);
46	int (*cancel) (struct p9_client *, struct p9_req_t *req);
47	int (*cancelled)(struct p9_client *, struct p9_req_t *req);
48	int (*zc_request)(struct p9_client *, struct p9_req_t *,
49			  struct iov_iter *, struct iov_iter *, int , int, int);
50	int (*show_options)(struct seq_file *, struct p9_client *);
51};
52
53void v9fs_register_trans(struct p9_trans_module *m);
54void v9fs_unregister_trans(struct p9_trans_module *m);
55struct p9_trans_module *v9fs_get_trans_by_name(char *s);
56struct p9_trans_module *v9fs_get_default_trans(void);
57void v9fs_put_trans(struct p9_trans_module *m);
58#endif /* NET_9P_TRANSPORT_H */

 
 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#define P9_DEF_MIN_RESVPORT	(665U)
30#define P9_DEF_MAX_RESVPORT	(1023U)
31
32/**
33 * struct p9_trans_module - transport module interface
34 * @list: used to maintain a list of currently available transports
35 * @name: the human-readable name of the transport
36 * @maxsize: transport provided maximum packet size
37 * @def: set if this transport should be considered the default
38 * @create: member function to create a new connection on this transport
39 * @close: member function to discard a connection on this transport
40 * @request: member function to issue a request to the transport
41 * @cancel: member function to cancel a request (if it hasn't been sent)
42 * @cancelled: member function to notify that a cancelled request will not
43 *             not receive a reply
44 *
45 * This is the basic API for a transport module which is registered by the
46 * transport module with the 9P core network module and used by the client
47 * to instantiate a new connection on a transport.
48 *
49 * The transport module list is protected by v9fs_trans_lock.
50 */
51
52struct p9_trans_module {
53	struct list_head list;
54	char *name;		/* name of transport */
55	int maxsize;		/* max message size of transport */
56	int def;		/* this transport should be default */
57	struct module *owner;
58	int (*create)(struct p9_client *, const char *, char *);
59	void (*close) (struct p9_client *);
60	int (*request) (struct p9_client *, struct p9_req_t *req);
61	int (*cancel) (struct p9_client *, struct p9_req_t *req);
62	int (*cancelled)(struct p9_client *, struct p9_req_t *req);
63	int (*zc_request)(struct p9_client *, struct p9_req_t *,
64			  struct iov_iter *, struct iov_iter *, int , int, int);
 
65};
66
67void v9fs_register_trans(struct p9_trans_module *m);
68void v9fs_unregister_trans(struct p9_trans_module *m);
69struct p9_trans_module *v9fs_get_trans_by_name(char *s);
70struct p9_trans_module *v9fs_get_default_trans(void);
71void v9fs_put_trans(struct p9_trans_module *m);
72#endif /* NET_9P_TRANSPORT_H */