Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * include/net/9p/transport.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Transport Definition
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *  Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *  Copyright (C) 2004-2008 by Eric Van Hensbergen <ericvh@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #ifndef NET_9P_TRANSPORT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define NET_9P_TRANSPORT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define P9_DEF_MIN_RESVPORT	(665U)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define P9_DEF_MAX_RESVPORT	(1023U)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * struct p9_trans_module - transport module interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  * @list: used to maintain a list of currently available transports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * @name: the human-readable name of the transport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  * @maxsize: transport provided maximum packet size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  * @def: set if this transport should be considered the default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  * @create: member function to create a new connection on this transport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  * @close: member function to discard a connection on this transport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  * @request: member function to issue a request to the transport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  * @cancel: member function to cancel a request (if it hasn't been sent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)  * @cancelled: member function to notify that a cancelled request will not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)  *             receive a reply
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)  * This is the basic API for a transport module which is registered by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)  * transport module with the 9P core network module and used by the client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)  * to instantiate a new connection on a transport.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)  * The transport module list is protected by v9fs_trans_lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct p9_trans_module {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	char *name;		/* name of transport */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	int maxsize;		/* max message size of transport */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	int def;		/* this transport should be default */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	struct module *owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	int (*create)(struct p9_client *, const char *, char *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	void (*close) (struct p9_client *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	int (*request) (struct p9_client *, struct p9_req_t *req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	int (*cancel) (struct p9_client *, struct p9_req_t *req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	int (*cancelled)(struct p9_client *, struct p9_req_t *req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	int (*zc_request)(struct p9_client *, struct p9_req_t *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 			  struct iov_iter *, struct iov_iter *, int , int, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	int (*show_options)(struct seq_file *, struct p9_client *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) void v9fs_register_trans(struct p9_trans_module *m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) void v9fs_unregister_trans(struct p9_trans_module *m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct p9_trans_module *v9fs_get_trans_by_name(char *s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct p9_trans_module *v9fs_get_default_trans(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) void v9fs_put_trans(struct p9_trans_module *m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #endif /* NET_9P_TRANSPORT_H */