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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#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 */
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_TRANS_PREF_PAYLOAD_MASK 0x1
30
31/* Default. Add Payload to PDU before sending it down to transport layer */
32#define P9_TRANS_PREF_PAYLOAD_DEF 0x0
33/* Send pay load separately to transport layer along with PDU.*/
34#define P9_TRANS_PREF_PAYLOAD_SEP 0x1
35
36/**
37 * struct p9_trans_module - transport module interface
38 * @list: used to maintain a list of currently available transports
39 * @name: the human-readable name of the transport
40 * @maxsize: transport provided maximum packet size
41 * @pref: Preferences of this transport
42 * @def: set if this transport should be considered the default
43 * @create: member function to create a new connection on this transport
44 * @close: member function to discard a connection on this transport
45 * @request: member function to issue a request to the transport
46 * @cancel: member function to cancel a request (if it hasn't been sent)
47 *
48 * This is the basic API for a transport module which is registered by the
49 * transport module with the 9P core network module and used by the client
50 * to instantiate a new connection on a transport.
51 *
52 * The transport module list is protected by v9fs_trans_lock.
53 */
54
55struct p9_trans_module {
56 struct list_head list;
57 char *name; /* name of transport */
58 int maxsize; /* max message size of transport */
59 int pref; /* Preferences of this transport */
60 int def; /* this transport should be default */
61 struct module *owner;
62 int (*create)(struct p9_client *, const char *, char *);
63 void (*close) (struct p9_client *);
64 int (*request) (struct p9_client *, struct p9_req_t *req);
65 int (*cancel) (struct p9_client *, struct p9_req_t *req);
66};
67
68void v9fs_register_trans(struct p9_trans_module *m);
69void v9fs_unregister_trans(struct p9_trans_module *m);
70struct p9_trans_module *v9fs_get_trans_by_name(char *s);
71struct p9_trans_module *v9fs_get_default_trans(void);
72void v9fs_put_trans(struct p9_trans_module *m);
73#endif /* NET_9P_TRANSPORT_H */