14c067f38SVincenzo Maffione /*- 2*4d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause 34c067f38SVincenzo Maffione * 44c067f38SVincenzo Maffione * Copyright (C) 2018 Universita` di Pisa 54c067f38SVincenzo Maffione * All rights reserved. 64c067f38SVincenzo Maffione * 74c067f38SVincenzo Maffione * Redistribution and use in source and binary forms, with or without 84c067f38SVincenzo Maffione * modification, are permitted provided that the following conditions 94c067f38SVincenzo Maffione * are met: 104c067f38SVincenzo Maffione * 114c067f38SVincenzo Maffione * 1. Redistributions of source code must retain the above copyright 124c067f38SVincenzo Maffione * notice, this list of conditions and the following disclaimer. 134c067f38SVincenzo Maffione * 2. Redistributions in binary form must reproduce the above copyright 144c067f38SVincenzo Maffione * notice, this list of conditions and the following disclaimer in the 154c067f38SVincenzo Maffione * documentation and/or other materials provided with the distribution. 164c067f38SVincenzo Maffione * 174c067f38SVincenzo Maffione * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 184c067f38SVincenzo Maffione * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 194c067f38SVincenzo Maffione * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 204c067f38SVincenzo Maffione * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 214c067f38SVincenzo Maffione * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 224c067f38SVincenzo Maffione * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 234c067f38SVincenzo Maffione * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 244c067f38SVincenzo Maffione * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 254c067f38SVincenzo Maffione * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 264c067f38SVincenzo Maffione * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 274c067f38SVincenzo Maffione * SUCH DAMAGE. 284c067f38SVincenzo Maffione * 294c067f38SVincenzo Maffione * $FreeBSD$ 304c067f38SVincenzo Maffione */ 314c067f38SVincenzo Maffione 325c4f8d80SVincenzo Maffione #include <sys/types.h> 335c4f8d80SVincenzo Maffione #include <sys/stat.h> 345c4f8d80SVincenzo Maffione #include <sys/ioctl.h> 355c4f8d80SVincenzo Maffione #include <sys/mman.h> 365c4f8d80SVincenzo Maffione #include <fcntl.h> 375c4f8d80SVincenzo Maffione #include <stdlib.h> 385c4f8d80SVincenzo Maffione #include <stdio.h> 395c4f8d80SVincenzo Maffione #include <stdarg.h> 405c4f8d80SVincenzo Maffione #include <string.h> 415c4f8d80SVincenzo Maffione #include <unistd.h> 425c4f8d80SVincenzo Maffione #include <errno.h> 435c4f8d80SVincenzo Maffione #include <net/netmap_user.h> 445c4f8d80SVincenzo Maffione #include <pthread.h> 455c4f8d80SVincenzo Maffione #include "libnetmap.h" 465c4f8d80SVincenzo Maffione 475c4f8d80SVincenzo Maffione struct nmctx_pthread { 485c4f8d80SVincenzo Maffione struct nmctx up; 495c4f8d80SVincenzo Maffione pthread_mutex_t mutex; 505c4f8d80SVincenzo Maffione }; 515c4f8d80SVincenzo Maffione 525c4f8d80SVincenzo Maffione static struct nmctx_pthread nmctx_pthreadsafe; 535c4f8d80SVincenzo Maffione 545c4f8d80SVincenzo Maffione static void 555c4f8d80SVincenzo Maffione nmctx_pthread_lock(struct nmctx *ctx, int lock) 565c4f8d80SVincenzo Maffione { 575c4f8d80SVincenzo Maffione struct nmctx_pthread *ctxp = 585c4f8d80SVincenzo Maffione (struct nmctx_pthread *)ctx; 595c4f8d80SVincenzo Maffione if (lock) { 605c4f8d80SVincenzo Maffione pthread_mutex_lock(&ctxp->mutex); 615c4f8d80SVincenzo Maffione } else { 625c4f8d80SVincenzo Maffione pthread_mutex_unlock(&ctxp->mutex); 635c4f8d80SVincenzo Maffione } 645c4f8d80SVincenzo Maffione } 655c4f8d80SVincenzo Maffione 665c4f8d80SVincenzo Maffione void __attribute__ ((constructor)) 675c4f8d80SVincenzo Maffione nmctx_set_threadsafe(void) 685c4f8d80SVincenzo Maffione { 695c4f8d80SVincenzo Maffione struct nmctx *old; 705c4f8d80SVincenzo Maffione 715c4f8d80SVincenzo Maffione pthread_mutex_init(&nmctx_pthreadsafe.mutex, NULL); 725c4f8d80SVincenzo Maffione old = nmctx_set_default(&nmctx_pthreadsafe.up); 735c4f8d80SVincenzo Maffione nmctx_pthreadsafe.up = *old; 745c4f8d80SVincenzo Maffione nmctx_pthreadsafe.up.lock = nmctx_pthread_lock; 755c4f8d80SVincenzo Maffione } 765c4f8d80SVincenzo Maffione 775c4f8d80SVincenzo Maffione int nmctx_threadsafe; 78