1/* 2 * linux/fs/9p/mux.h 3 * 4 * Multiplexer Definitions 5 * 6 * Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net> 7 * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 11 * as published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to: 20 * Free Software Foundation 21 * 51 Franklin Street, Fifth Floor 22 * Boston, MA 02111-1301 USA 23 * 24 */ 25 26struct v9fs_mux_data; 27struct v9fs_req; 28 29/** 30 * v9fs_mux_req_callback - callback function that is called when the 31 * response of a request is received. The callback is called from 32 * a workqueue and shouldn't block. 33 * 34 * @a - the pointer that was specified when the request was send to be 35 * passed to the callback 36 * @tc - request call 37 * @rc - response call 38 * @err - error code (non-zero if error occured) 39 */ 40typedef void (*v9fs_mux_req_callback)(struct v9fs_req *req, void *a); 41 42int v9fs_mux_global_init(void); 43void v9fs_mux_global_exit(void); 44 45struct v9fs_mux_data *v9fs_mux_init(struct v9fs_transport *trans, int msize, 46 unsigned char *extended); 47void v9fs_mux_destroy(struct v9fs_mux_data *); 48 49int v9fs_mux_send(struct v9fs_mux_data *m, struct v9fs_fcall *tc); 50struct v9fs_fcall *v9fs_mux_recv(struct v9fs_mux_data *m); 51int v9fs_mux_rpc(struct v9fs_mux_data *m, struct v9fs_fcall *tc, struct v9fs_fcall **rc); 52 53void v9fs_mux_flush(struct v9fs_mux_data *m, int sendflush); 54void v9fs_mux_cancel(struct v9fs_mux_data *m, int err); 55int v9fs_errstr2errno(char *errstr, int len); 56