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abfa034e4b
* remove lot of update to different data structure * add a seperate callback for zero copy request. * above makes non zero copy code path simpler * remove conditionalizing TREAD/TREADDIR/TWRITE in the zero copy path * Fix the dotu p9_check_errors with zero copy. Add sufficient doc around * Add support for both in and output buffers in zero copy callback * pin and unpin pages in the same context * use helpers instead of defining page offset and rest of page ourself * Fix mem leak in p9_check_errors * Remove 'E' and 'F' in p9pdu_vwritef Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
/*
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* include/net/9p/transport.h
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*
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* Transport Definition
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*
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* Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
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* Copyright (C) 2004-2008 by Eric Van Hensbergen <ericvh@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to:
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* Free Software Foundation
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* 51 Franklin Street, Fifth Floor
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* Boston, MA 02111-1301 USA
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*
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*/
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#ifndef NET_9P_TRANSPORT_H
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#define NET_9P_TRANSPORT_H
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/**
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* struct p9_trans_module - transport module interface
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* @list: used to maintain a list of currently available transports
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* @name: the human-readable name of the transport
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* @maxsize: transport provided maximum packet size
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* @pref: Preferences of this transport
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* @def: set if this transport should be considered the default
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* @create: member function to create a new connection on this transport
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* @close: member function to discard a connection on this transport
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* @request: member function to issue a request to the transport
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* @cancel: member function to cancel a request (if it hasn't been sent)
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*
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* This is the basic API for a transport module which is registered by the
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* transport module with the 9P core network module and used by the client
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* to instantiate a new connection on a transport.
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*
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* The transport module list is protected by v9fs_trans_lock.
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*/
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struct p9_trans_module {
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struct list_head list;
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char *name; /* name of transport */
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int maxsize; /* max message size of transport */
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int def; /* this transport should be default */
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struct module *owner;
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int (*create)(struct p9_client *, const char *, char *);
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void (*close) (struct p9_client *);
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int (*request) (struct p9_client *, struct p9_req_t *req);
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int (*cancel) (struct p9_client *, struct p9_req_t *req);
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int (*zc_request)(struct p9_client *, struct p9_req_t *,
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char *, char *, int , int, int, int);
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};
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void v9fs_register_trans(struct p9_trans_module *m);
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void v9fs_unregister_trans(struct p9_trans_module *m);
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struct p9_trans_module *v9fs_get_trans_by_name(char *s);
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struct p9_trans_module *v9fs_get_default_trans(void);
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void v9fs_put_trans(struct p9_trans_module *m);
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#endif /* NET_9P_TRANSPORT_H */
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