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fe267a5590
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
146 lines
3.4 KiB
C
146 lines
3.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2009 Robert N. M. Watson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* When an interface has been detached but not yet freed, we set the various
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* ifnet function pointers to "ifdead" versions. This prevents unexpected
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* calls from the network stack into the device driver after if_detach() has
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* returned.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_var.h>
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static int
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ifdead_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *sa,
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struct route *ro)
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{
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m_freem(m);
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return (ENXIO);
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}
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static void
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ifdead_input(struct ifnet *ifp, struct mbuf *m)
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{
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m_freem(m);
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}
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static void
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ifdead_start(struct ifnet *ifp)
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{
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}
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static int
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ifdead_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
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{
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return (ENXIO);
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}
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static int
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ifdead_resolvemulti(struct ifnet *ifp, struct sockaddr **llsa,
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struct sockaddr *sa)
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{
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*llsa = NULL;
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return (ENXIO);
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}
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static void
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ifdead_qflush(struct ifnet *ifp)
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{
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}
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static int
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ifdead_transmit(struct ifnet *ifp, struct mbuf *m)
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{
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m_freem(m);
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return (ENXIO);
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}
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static uint64_t
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ifdead_get_counter(struct ifnet *ifp, ift_counter cnt)
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{
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return (0);
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}
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static int
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ifdead_snd_tag_alloc(struct ifnet *ifp, union if_snd_tag_alloc_params *params,
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struct m_snd_tag **ppmt)
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{
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return (EOPNOTSUPP);
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}
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static int
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ifdead_snd_tag_modify(struct m_snd_tag *pmt, union if_snd_tag_modify_params *params)
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{
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return (EOPNOTSUPP);
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}
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static int
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ifdead_snd_tag_query(struct m_snd_tag *pmt, union if_snd_tag_query_params *params)
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{
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return (EOPNOTSUPP);
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}
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static void
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ifdead_snd_tag_free(struct m_snd_tag *pmt)
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{
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}
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void
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if_dead(struct ifnet *ifp)
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{
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ifp->if_output = ifdead_output;
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ifp->if_input = ifdead_input;
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ifp->if_start = ifdead_start;
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ifp->if_ioctl = ifdead_ioctl;
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ifp->if_resolvemulti = ifdead_resolvemulti;
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ifp->if_qflush = ifdead_qflush;
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ifp->if_transmit = ifdead_transmit;
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ifp->if_get_counter = ifdead_get_counter;
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ifp->if_snd_tag_alloc = ifdead_snd_tag_alloc;
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ifp->if_snd_tag_modify = ifdead_snd_tag_modify;
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ifp->if_snd_tag_query = ifdead_snd_tag_query;
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ifp->if_snd_tag_free = ifdead_snd_tag_free;
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}
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