2 * Copyright (c) 2009 Robert N. M. Watson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * When an interface has been detached but not yet freed, we set the various
29 * ifnet function pointers to "ifdead" versions. This prevents unexpected
30 * calls from the network stack into the device driver after if_detach() has
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
37 #include <sys/param.h>
39 #include <sys/socket.h>
42 #include <net/if_var.h>
45 ifdead_output(struct ifnet *ifp, struct mbuf *m, struct sockaddr *sa,
54 ifdead_input(struct ifnet *ifp, struct mbuf *m)
61 ifdead_start(struct ifnet *ifp)
67 ifdead_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
74 ifdead_watchdog(struct ifnet *ifp)
80 ifdead_resolvemulti(struct ifnet *ifp, struct sockaddr **llsa,
89 ifdead_qflush(struct ifnet *ifp)
95 ifdead_transmit(struct ifnet *ifp, struct mbuf *m)
103 if_dead(struct ifnet *ifp)
106 ifp->if_output = ifdead_output;
107 ifp->if_input = ifdead_input;
108 ifp->if_start = ifdead_start;
109 ifp->if_ioctl = ifdead_ioctl;
110 ifp->if_watchdog = ifdead_watchdog;
111 ifp->if_resolvemulti = ifdead_resolvemulti;
112 ifp->if_qflush = ifdead_qflush;
113 ifp->if_transmit = ifdead_transmit;