Current Path : /sys/net/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/net/if_dead.c |
/*- * Copyright (c) 2009 Robert N. M. Watson * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * When an interface has been detached but not yet freed, we set the various * ifnet function pointers to "ifdead" versions. This prevents unexpected * calls from the network stack into the device driver after if_detach() has * returned. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/net/if_dead.c 199975 2009-11-30 21:25:57Z jhb $"); #include <sys/param.h> #include <sys/mbuf.h> #include <sys/socket.h> #include <net/if.h> #include <net/if_var.h> static int ifdead_output(struct ifnet *ifp, struct mbuf *m, struct sockaddr *sa, struct route *ro) { m_freem(m); return (ENXIO); } static void ifdead_input(struct ifnet *ifp, struct mbuf *m) { m_freem(m); } static void ifdead_start(struct ifnet *ifp) { } static int ifdead_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { return (ENXIO); } static int ifdead_resolvemulti(struct ifnet *ifp, struct sockaddr **llsa, struct sockaddr *sa) { *llsa = NULL; return (ENXIO); } static void ifdead_qflush(struct ifnet *ifp) { } static int ifdead_transmit(struct ifnet *ifp, struct mbuf *m) { m_freem(m); return (ENXIO); } void if_dead(struct ifnet *ifp) { ifp->if_output = ifdead_output; ifp->if_input = ifdead_input; ifp->if_start = ifdead_start; ifp->if_ioctl = ifdead_ioctl; ifp->if_resolvemulti = ifdead_resolvemulti; ifp->if_qflush = ifdead_qflush; ifp->if_transmit = ifdead_transmit; }