Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / net / 9p / transport.h

diff --git a/kernel/include/net/9p/transport.h b/kernel/include/net/9p/transport.h
new file mode 100644 (file)
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--- /dev/null
+++ b/kernel/include/net/9p/transport.h
@@ -0,0 +1,72 @@
+/*
+ * include/net/9p/transport.h
+ *
+ * Transport Definition
+ *
+ *  Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
+ *  Copyright (C) 2004-2008 by Eric Van Hensbergen <ericvh@gmail.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to:
+ *  Free Software Foundation
+ *  51 Franklin Street, Fifth Floor
+ *  Boston, MA  02111-1301  USA
+ *
+ */
+
+#ifndef NET_9P_TRANSPORT_H
+#define NET_9P_TRANSPORT_H
+
+#define P9_DEF_MIN_RESVPORT    (665U)
+#define P9_DEF_MAX_RESVPORT    (1023U)
+
+/**
+ * struct p9_trans_module - transport module interface
+ * @list: used to maintain a list of currently available transports
+ * @name: the human-readable name of the transport
+ * @maxsize: transport provided maximum packet size
+ * @def: set if this transport should be considered the default
+ * @create: member function to create a new connection on this transport
+ * @close: member function to discard a connection on this transport
+ * @request: member function to issue a request to the transport
+ * @cancel: member function to cancel a request (if it hasn't been sent)
+ * @cancelled: member function to notify that a cancelled request will not
+ *             not receive a reply
+ *
+ * This is the basic API for a transport module which is registered by the
+ * transport module with the 9P core network module and used by the client
+ * to instantiate a new connection on a transport.
+ *
+ * The transport module list is protected by v9fs_trans_lock.
+ */
+
+struct p9_trans_module {
+       struct list_head list;
+       char *name;             /* name of transport */
+       int maxsize;            /* max message size of transport */
+       int def;                /* this transport should be default */
+       struct module *owner;
+       int (*create)(struct p9_client *, const char *, char *);
+       void (*close) (struct p9_client *);
+       int (*request) (struct p9_client *, struct p9_req_t *req);
+       int (*cancel) (struct p9_client *, struct p9_req_t *req);
+       int (*cancelled)(struct p9_client *, struct p9_req_t *req);
+       int (*zc_request)(struct p9_client *, struct p9_req_t *,
+                         struct iov_iter *, struct iov_iter *, int , int, int);
+};
+
+void v9fs_register_trans(struct p9_trans_module *m);
+void v9fs_unregister_trans(struct p9_trans_module *m);
+struct p9_trans_module *v9fs_get_trans_by_name(char *s);
+struct p9_trans_module *v9fs_get_default_trans(void);
+void v9fs_put_trans(struct p9_trans_module *m);
+#endif /* NET_9P_TRANSPORT_H */