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 */ 64