1 /*- 2 * Copyright (c) 2017 Juniper Networks, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 */ 26 27 /* Transport definitions */ 28 #ifndef FS_P9FS_P9_TRANSPORT_H 29 #define FS_P9FS_P9_TRANSPORT_H 30 31 #include <sys/queue.h> 32 33 struct p9_req_t; 34 35 /* Tranport module interface */ 36 struct p9_trans_module { 37 TAILQ_ENTRY(p9_trans_module) link; 38 char *name; /* name of transport */ 39 /* member function to create a new conection on this transport*/ 40 int (*create)(const char *mount_tag, void **handlep); 41 /* member function to terminate a connection on this transport */ 42 void (*close) (void *handle); 43 /* member function to issue a request to the transport*/ 44 int (*request) (void *handle, struct p9_req_t *req); 45 /* member function to cancel a request if it has been sent */ 46 int (*cancel) (void *handle, struct p9_req_t *req); 47 }; 48 49 void p9_register_trans(struct p9_trans_module *m); 50 void p9_unregister_trans(struct p9_trans_module *m); 51 struct p9_trans_module *p9_get_trans_by_name(char *s); 52 53 #endif /* FS_P9FS_P9_TRANSPORT_H */ 54