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Diffstat (limited to 'include/net/9p/transport.h')
| -rw-r--r-- | include/net/9p/transport.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/include/net/9p/transport.h b/include/net/9p/transport.h new file mode 100644 index 000000000..3eb4261b2 --- /dev/null +++ b/include/net/9p/transport.h @@ -0,0 +1,58 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * 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> + */ + +#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 + * 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); + int (*show_options)(struct seq_file *, struct p9_client *); +}; + +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 */ |