/* * linux/fs/9p/mux.h * * Multiplexer Definitions * * Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net> * Copyright (C) 2004 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 as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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 * */ struct v9fs_mux_data; /** * v9fs_mux_req_callback - callback function that is called when the * response of a request is received. The callback is called from * a workqueue and shouldn't block. * * @a - the pointer that was specified when the request was send to be * passed to the callback * @tc - request call * @rc - response call * @err - error code (non-zero if error occured) */ typedef void (*v9fs_mux_req_callback)(void *a, struct v9fs_fcall *tc, struct v9fs_fcall *rc, int err); int v9fs_mux_global_init(void); void v9fs_mux_global_exit(void); struct v9fs_mux_data *v9fs_mux_init(struct v9fs_transport *trans, int msize, unsigned char *extended); void v9fs_mux_destroy(struct v9fs_mux_data *); int v9fs_mux_send(struct v9fs_mux_data *m, struct v9fs_fcall *tc); struct v9fs_fcall *v9fs_mux_recv(struct v9fs_mux_data *m); int v9fs_mux_rpc(struct v9fs_mux_data *m, struct v9fs_fcall *tc, struct v9fs_fcall **rc); int v9fs_mux_rpcnb(struct v9fs_mux_data *m, struct v9fs_fcall *tc, v9fs_mux_req_callback cb, void *a); void v9fs_mux_flush(struct v9fs_mux_data *m, int sendflush); void v9fs_mux_cancel(struct v9fs_mux_data *m, int err); int v9fs_errstr2errno(char *errstr, int len);