1 /* $NetBSD: tap_component.c,v 1.2 2015/08/20 12:20:09 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2015 Wei Liu. All Rights Reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: tap_component.c,v 1.2 2015/08/20 12:20:09 christos Exp $"); 30 31 #include <sys/param.h> 32 #include <sys/device.h> 33 #include <sys/stat.h> 34 35 #include "rump_private.h" 36 #include "rump_net_private.h" 37 #include "rump_vfs_private.h" 38 39 #include "ioconf.h" 40 41 CFDRIVER_DECL(tap, DV_IFNET, NULL); 42 43 RUMP_COMPONENT(RUMP_COMPONENT_NET_IF) 44 { 45 extern const struct cdevsw tap_cdevsw; 46 devmajor_t bmaj, cmaj; 47 int error; 48 49 config_cfdriver_attach(&tap_cd); 50 tapattach(0); 51 52 bmaj = cmaj = NODEVMAJOR; 53 error = devsw_attach("tap", NULL, &bmaj, &tap_cdevsw, &cmaj); 54 if (error != 0) 55 panic("tap devsw attach failed: %d", error); 56 57 error = rump_vfs_makeonedevnode(S_IFCHR, "/dev/tap", cmaj, 0xfffff); 58 if (error != 0) 59 panic("cannot create tap device node: %d", error); 60 61 error = rump_vfs_makedevnodes(S_IFCHR, "/dev/tap", '0', cmaj, 0, 4); 62 if (error != 0) 63 panic("cannot create tap[0-4] device node: %d", error); 64 } 65