699 lines
19 KiB
C
699 lines
19 KiB
C
/* $NetBSD: if_etherip.c,v 1.14 2007/10/08 16:18:04 ad Exp $ */
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/*
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* Copyright (c) 2006, Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
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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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* 3. Neither the name of Hans Rosenfeld nor the names of his
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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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* Copyright (c) 2003, 2004 The NetBSD Foundation.
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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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* 3. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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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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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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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#include <sys/cdefs.h>
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#include "opt_inet.h"
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#include "bpfilter.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/errno.h>
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#include <sys/time.h>
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#include <sys/sysctl.h>
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#include <sys/queue.h>
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#include <sys/kauth.h>
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#include <sys/socket.h>
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#include <sys/intr.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#include <net/route.h>
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#include <net/if_etherip.h>
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#if NBPFILTER > 0
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#include <net/bpf.h>
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#endif
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#ifdef INET
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#include <netinet/in_var.h>
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#endif /* INET */
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#include <netinet/ip_etherip.h>
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#ifdef INET6
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#include <netinet6/ip6_etherip.h>
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#ifndef INET
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#include <netinet/in.h>
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#endif
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#include <netinet6/in6_var.h>
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#include <netinet/ip6.h>
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#include <netinet6/ip6_var.h>
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#include <netinet6/in6_gif.h>
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#include <netinet6/ip6protosw.h>
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#endif /* INET6 */
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#include <compat/sys/sockio.h>
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static int etherip_node;
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static int etherip_sysctl_handler(SYSCTLFN_PROTO);
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SYSCTL_SETUP_PROTO(sysctl_etherip_setup);
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void etheripattach(int);
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static int etherip_match(struct device *, struct cfdata *, void *);
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static void etherip_attach(struct device *, struct device *, void *);
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static int etherip_detach(struct device *, int);
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CFATTACH_DECL(etherip, sizeof(struct etherip_softc),
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etherip_match, etherip_attach, etherip_detach, NULL);
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extern struct cfdriver etherip_cd;
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static void etherip_start(struct ifnet *);
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static void etherip_stop(struct ifnet *, int);
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static int etherip_init(struct ifnet *);
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static int etherip_ioctl(struct ifnet *, u_long, void *);
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static int etherip_mediachange(struct ifnet *);
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static void etherip_mediastatus(struct ifnet *, struct ifmediareq *);
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static int etherip_clone_create(struct if_clone *, int);
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static int etherip_clone_destroy(struct ifnet *);
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static struct if_clone etherip_cloners = IF_CLONE_INITIALIZER(
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"etherip", etherip_clone_create, etherip_clone_destroy);
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static int etherip_set_tunnel(struct ifnet *,
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struct sockaddr *, struct sockaddr *);
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static void etherip_delete_tunnel(struct ifnet *);
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static void etheripintr(void *);
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void
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etheripattach(int count)
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{
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int error;
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error = config_cfattach_attach(etherip_cd.cd_name, ðerip_ca);
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if (error) {
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aprint_error("%s: unable to register cfattach\n",
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etherip_cd.cd_name);
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(void)config_cfdriver_detach(ðerip_cd);
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return;
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}
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LIST_INIT(ðerip_softc_list);
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if_clone_attach(ðerip_cloners);
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}
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/* Pretty much useless for a pseudo-device */
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static int
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etherip_match(struct device *self, struct cfdata *cfdata, void *arg)
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{
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return 1;
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}
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static void
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etherip_attach(struct device *parent, struct device *self, void *aux)
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{
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struct etherip_softc *sc = (struct etherip_softc *)self;
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struct ifnet *ifp;
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const struct sysctlnode *node;
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u_int8_t enaddr[ETHER_ADDR_LEN] =
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{ 0xf2, 0x0b, 0xa5, 0xff, 0xff, 0xff };
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char enaddrstr[3 * ETHER_ADDR_LEN];
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struct timeval tv;
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uint32_t ui;
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int error;
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sc->sc_si = NULL;
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sc->sc_src = NULL;
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sc->sc_dst = NULL;
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/*
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* In order to obtain unique initial Ethernet address on a host,
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* do some randomisation using the current uptime. It's not meant
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* for anything but avoiding hard-coding an address.
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*/
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getmicrouptime(&tv);
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ui = (tv.tv_sec ^ tv.tv_usec) & 0xffffff;
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memcpy(enaddr+3, (u_int8_t *)&ui, 3);
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aprint_verbose("%s: Ethernet address %s\n", sc->sc_dev.dv_xname,
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ether_snprintf(enaddrstr, sizeof(enaddrstr), enaddr));
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/*
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* Why 1000baseT? Why not? You can add more.
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*
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* Note that there are 3 steps: init, one or several additions to
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* list of supported media, and in the end, the selection of one
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* of them.
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*/
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ifmedia_init(&sc->sc_im, 0, etherip_mediachange, etherip_mediastatus);
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ifmedia_add(&sc->sc_im, IFM_ETHER|IFM_1000_T, 0, NULL);
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ifmedia_add(&sc->sc_im, IFM_ETHER|IFM_1000_T|IFM_FDX, 0, NULL);
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ifmedia_add(&sc->sc_im, IFM_ETHER|IFM_100_TX, 0, NULL);
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ifmedia_add(&sc->sc_im, IFM_ETHER|IFM_100_TX|IFM_FDX, 0, NULL);
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ifmedia_add(&sc->sc_im, IFM_ETHER|IFM_10_T, 0, NULL);
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ifmedia_add(&sc->sc_im, IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
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ifmedia_add(&sc->sc_im, IFM_ETHER|IFM_AUTO, 0, NULL);
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ifmedia_set(&sc->sc_im, IFM_ETHER|IFM_AUTO);
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/*
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* One should note that an interface must do multicast in order
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* to support IPv6.
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*/
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ifp = &sc->sc_ec.ec_if;
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strcpy(ifp->if_xname, sc->sc_dev.dv_xname);
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ifp->if_softc = sc;
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ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
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ifp->if_ioctl = etherip_ioctl;
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ifp->if_start = etherip_start;
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ifp->if_stop = etherip_stop;
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ifp->if_init = etherip_init;
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IFQ_SET_READY(&ifp->if_snd);
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sc->sc_ec.ec_capabilities = ETHERCAP_VLAN_MTU | ETHERCAP_JUMBO_MTU;
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/*
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* Those steps are mandatory for an Ethernet driver, the first call
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* being common to all network interface drivers.
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*/
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if_attach(ifp);
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ether_ifattach(ifp, enaddr);
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/*
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* Add a sysctl node for that interface.
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*
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* The pointer transmitted is not a string, but instead a pointer to
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* the softc structure, which we can use to build the string value on
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* the fly in the helper function of the node. See the comments for
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* etherip_sysctl_handler for details.
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*/
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error = sysctl_createv(NULL, 0, NULL, &node, CTLFLAG_READWRITE,
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CTLTYPE_STRING, sc->sc_dev.dv_xname, NULL,
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etherip_sysctl_handler, 0, sc, 18, CTL_NET,
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AF_LINK, etherip_node, device_unit(&sc->sc_dev),
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CTL_EOL);
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if (error)
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aprint_error("%s: sysctl_createv returned %d, ignoring\n",
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sc->sc_dev.dv_xname, error);
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/* insert into etherip_softc_list */
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LIST_INSERT_HEAD(ðerip_softc_list, sc, etherip_list);
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}
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/*
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* When detaching, we do the inverse of what is done in the attach
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* routine, in reversed order.
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*/
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static int
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etherip_detach(struct device* self, int flags)
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{
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struct etherip_softc *sc = (struct etherip_softc *)self;
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struct ifnet *ifp = &sc->sc_ec.ec_if;
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int error, s;
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s = splnet();
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etherip_stop(ifp, 1);
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if_down(ifp);
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splx(s);
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/*
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* Destroying a single leaf is a very straightforward operation using
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* sysctl_destroyv. One should be sure to always end the path with
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* CTL_EOL.
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*/
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error = sysctl_destroyv(NULL, CTL_NET, AF_LINK, etherip_node,
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device_unit(&sc->sc_dev), CTL_EOL);
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if (error)
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aprint_error("%s: sysctl_destroyv returned %d, ignoring\n",
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sc->sc_dev.dv_xname, error);
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LIST_REMOVE(sc, etherip_list);
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etherip_delete_tunnel(ifp);
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ether_ifdetach(ifp);
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if_detach(ifp);
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rtcache_free(&sc->sc_ro);
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ifmedia_delete_instance(&sc->sc_im, IFM_INST_ANY);
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return 0;
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}
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/*
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* This function is called by the ifmedia layer to notify the driver
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* that the user requested a media change. A real driver would
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* reconfigure the hardware.
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*/
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static int
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etherip_mediachange(struct ifnet *ifp)
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{
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return 0;
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}
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/*
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* Here the user asks for the currently used media.
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*/
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static void
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etherip_mediastatus(struct ifnet *ifp, struct ifmediareq *imr)
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{
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struct etherip_softc *sc = (struct etherip_softc *)ifp->if_softc;
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imr->ifm_active = sc->sc_im.ifm_cur->ifm_media;
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}
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static void
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etherip_start(struct ifnet *ifp)
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{
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struct etherip_softc *sc = (struct etherip_softc *)ifp->if_softc;
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if(sc->sc_si)
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softint_schedule(sc->sc_si);
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}
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static void
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etheripintr(void *arg)
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{
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struct etherip_softc *sc = (struct etherip_softc *)arg;;
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struct ifnet *ifp = &sc->sc_ec.ec_if;;
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struct mbuf *m;
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int s, error;
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for (;;) {
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s = splnet();
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IFQ_DEQUEUE(&ifp->if_snd, m);
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splx(s);
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if (m == NULL)
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return;
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#if NBPFILTER > 0
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if (ifp->if_bpf)
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bpf_mtap(ifp->if_bpf, m);
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#endif
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ifp->if_opackets++;
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if (sc->sc_src && sc->sc_dst) {
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ifp->if_flags |= IFF_OACTIVE;
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switch (sc->sc_src->sa_family) {
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#ifdef INET
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case AF_INET:
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error = ip_etherip_output(ifp, m);
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break;
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#endif
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#ifdef INET6
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case AF_INET6:
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error = ip6_etherip_output(ifp, m);
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break;
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#endif
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default:
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error = ENETDOWN;
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}
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ifp->if_flags &= ~IFF_OACTIVE;
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} else m_freem(m);
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}
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}
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static int
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etherip_ioctl(struct ifnet *ifp, u_long cmd, void *data)
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{
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struct etherip_softc *sc = (struct etherip_softc *)ifp->if_softc;
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struct ifreq *ifr = data;
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struct sockaddr *src, *dst;
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int s, error;
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switch (cmd) {
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case SIOCSLIFPHYADDR:
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src = (struct sockaddr *)
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&(((struct if_laddrreq *)data)->addr);
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dst = (struct sockaddr *)
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&(((struct if_laddrreq *)data)->dstaddr);
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/* sa_family must be equal */
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if (src->sa_family != dst->sa_family)
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return EINVAL;
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/* validate sa_len */
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switch (src->sa_family) {
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#ifdef INET
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case AF_INET:
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if (src->sa_len != sizeof(struct sockaddr_in) ||
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dst->sa_len != sizeof(struct sockaddr_in))
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return EINVAL;
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break;
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#endif
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#ifdef INET6
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case AF_INET6:
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if (src->sa_len != sizeof(struct sockaddr_in6) ||
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dst->sa_len != sizeof(struct sockaddr_in6))
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return EINVAL;
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break;
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#endif
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default:
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return EAFNOSUPPORT;
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}
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error = etherip_set_tunnel(ifp, src, dst);
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break;
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case SIOCDIFPHYADDR:
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etherip_delete_tunnel(ifp);
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error = 0;
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break;
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case SIOCGLIFPHYADDR:
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if (sc->sc_src == NULL || sc->sc_dst == NULL)
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return EADDRNOTAVAIL;
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/* copy src */
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src = sc->sc_src;
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dst = (struct sockaddr *)
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&(((struct if_laddrreq *)data)->addr);
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if (src->sa_len > sizeof(((struct if_laddrreq *)data)->addr))
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return EINVAL;
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memcpy(dst, src, src->sa_len);
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/* copy dst */
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src = sc->sc_dst;
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dst = (struct sockaddr *)
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&(((struct if_laddrreq *)data)->dstaddr);
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if (src->sa_len > sizeof(((struct if_laddrreq *)data)->dstaddr))
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return EINVAL;
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memcpy(dst, src, src->sa_len);
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error = 0;
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break;
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#ifdef OSIOCSIFMEDIA
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case OSIOCSIFMEDIA:
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#endif
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case SIOCSIFMEDIA:
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case SIOCGIFMEDIA:
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s = splnet();
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error = ifmedia_ioctl(ifp, ifr, &sc->sc_im, cmd);
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splx(s);
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break;
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default:
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s = splnet();
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error = ether_ioctl(ifp, cmd, data);
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splx(s);
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if (error == ENETRESET)
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error = 0;
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break;
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}
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return (error);
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|
}
|
|
|
|
static int
|
|
etherip_set_tunnel(struct ifnet *ifp,
|
|
struct sockaddr *src,
|
|
struct sockaddr *dst)
|
|
{
|
|
struct etherip_softc *sc = (struct etherip_softc *)ifp->if_softc;
|
|
struct etherip_softc *sc2;
|
|
struct sockaddr *osrc, *odst;
|
|
int s, error = 0;
|
|
|
|
s = splsoftnet();
|
|
|
|
LIST_FOREACH(sc2, ðerip_softc_list, etherip_list) {
|
|
if (sc2 == sc)
|
|
continue;
|
|
if (!sc2->sc_dst || !sc2->sc_src)
|
|
continue;
|
|
if (sc2->sc_dst->sa_family != dst->sa_family ||
|
|
sc2->sc_dst->sa_len != dst->sa_len ||
|
|
sc2->sc_src->sa_family != src->sa_family ||
|
|
sc2->sc_src->sa_len != src->sa_len)
|
|
continue;
|
|
/* can't configure same pair of address onto two tunnels */
|
|
if (bcmp(sc2->sc_dst, dst, dst->sa_len) == 0 &&
|
|
bcmp(sc2->sc_src, src, src->sa_len) == 0) {
|
|
error = EADDRNOTAVAIL;
|
|
goto out;
|
|
}
|
|
/* XXX both end must be valid? (I mean, not 0.0.0.0) */
|
|
}
|
|
|
|
if (sc->sc_si) {
|
|
softint_disestablish(sc->sc_si);
|
|
sc->sc_si = NULL;
|
|
}
|
|
|
|
ifp->if_flags &= ~IFF_RUNNING;
|
|
|
|
osrc = sc->sc_src; sc->sc_src = NULL;
|
|
odst = sc->sc_dst; sc->sc_dst = NULL;
|
|
|
|
sc->sc_src = sockaddr_dup(src, M_WAITOK);
|
|
if (osrc)
|
|
sockaddr_free(osrc);
|
|
|
|
sc->sc_dst = sockaddr_dup(dst, M_WAITOK);
|
|
if (odst)
|
|
sockaddr_free(odst);
|
|
|
|
ifp->if_flags |= IFF_RUNNING;
|
|
|
|
sc->sc_si = softint_establish(SOFTINT_NET, etheripintr, sc);
|
|
if (sc->sc_si == NULL)
|
|
error = ENOMEM;
|
|
|
|
out:
|
|
splx(s);
|
|
|
|
return(error);
|
|
}
|
|
|
|
static void
|
|
etherip_delete_tunnel(struct ifnet *ifp)
|
|
{
|
|
struct etherip_softc *sc = (struct etherip_softc *)ifp->if_softc;
|
|
int s;
|
|
|
|
s = splsoftnet();
|
|
|
|
if (sc->sc_si) {
|
|
softint_disestablish(sc->sc_si);
|
|
sc->sc_si = NULL;
|
|
}
|
|
|
|
if (sc->sc_src) {
|
|
sockaddr_free(sc->sc_src);
|
|
sc->sc_src = NULL;
|
|
}
|
|
if (sc->sc_dst) {
|
|
sockaddr_free(sc->sc_dst);
|
|
sc->sc_dst = NULL;
|
|
}
|
|
|
|
ifp->if_flags &= ~IFF_RUNNING;
|
|
splx(s);
|
|
}
|
|
|
|
static int
|
|
etherip_init(struct ifnet *ifp)
|
|
{
|
|
struct etherip_softc *sc = ifp->if_softc;
|
|
|
|
if (sc->sc_si == NULL)
|
|
sc->sc_si = softint_establish(SOFTINT_NET, etheripintr, sc);
|
|
|
|
if (sc->sc_si == NULL)
|
|
return(ENOMEM);
|
|
|
|
ifp->if_flags |= IFF_RUNNING;
|
|
etherip_start(ifp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
etherip_stop(struct ifnet *ifp, int disable)
|
|
{
|
|
ifp->if_flags &= ~IFF_RUNNING;
|
|
}
|
|
|
|
static int
|
|
etherip_clone_create(struct if_clone *ifc, int unit)
|
|
{
|
|
struct cfdata *cf;
|
|
|
|
MALLOC(cf, struct cfdata *, sizeof(struct cfdata), M_DEVBUF, M_WAITOK);
|
|
cf->cf_name = etherip_cd.cd_name;
|
|
cf->cf_atname = etherip_ca.ca_name;
|
|
cf->cf_unit = unit;
|
|
cf->cf_fstate = FSTATE_STAR;
|
|
|
|
if (config_attach_pseudo(cf) == NULL) {
|
|
aprint_error("%s%d: unable to attach an instance\n",
|
|
etherip_cd.cd_name, unit);
|
|
return (ENXIO);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
etherip_clone_destroy(struct ifnet *ifp)
|
|
{
|
|
struct device *dev = (struct device *)ifp->if_softc;
|
|
struct cfdata *cf = device_cfdata(dev);
|
|
int error;
|
|
|
|
if ((error = config_detach(dev, 0)) != 0)
|
|
aprint_error("%s: unable to detach instance\n",
|
|
dev->dv_xname);
|
|
FREE(cf, M_DEVBUF);
|
|
|
|
return error;
|
|
}
|
|
|
|
SYSCTL_SETUP(sysctl_etherip_setup, "sysctl net.link.etherip subtree setup")
|
|
{
|
|
const struct sysctlnode *node;
|
|
int error = 0;
|
|
|
|
error = sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT,
|
|
CTLTYPE_NODE, "net", NULL,
|
|
NULL, 0, NULL, 0,
|
|
CTL_NET, CTL_EOL);
|
|
if (error)
|
|
return;
|
|
|
|
error = sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT,
|
|
CTLTYPE_NODE, "link", NULL,
|
|
NULL, 0, NULL, 0,
|
|
CTL_NET, AF_LINK, CTL_EOL);
|
|
if (error)
|
|
return;
|
|
|
|
error = sysctl_createv(clog, 0, NULL, &node,
|
|
CTLFLAG_PERMANENT,
|
|
CTLTYPE_NODE, "etherip", NULL,
|
|
NULL, 0, NULL, 0,
|
|
CTL_NET, AF_LINK, CTL_CREATE, CTL_EOL);
|
|
if (error)
|
|
return;
|
|
|
|
etherip_node = node->sysctl_num;
|
|
}
|
|
|
|
static int
|
|
etherip_sysctl_handler(SYSCTLFN_ARGS)
|
|
{
|
|
struct sysctlnode node;
|
|
struct etherip_softc *sc;
|
|
struct ifnet *ifp;
|
|
int error;
|
|
size_t len;
|
|
char addr[3 * ETHER_ADDR_LEN];
|
|
char enaddr[ETHER_ADDR_LEN];
|
|
|
|
node = *rnode;
|
|
sc = node.sysctl_data;
|
|
ifp = &sc->sc_ec.ec_if;
|
|
(void)ether_snprintf(addr, sizeof(addr), CLLADDR(ifp->if_sadl));
|
|
node.sysctl_data = addr;
|
|
error = sysctl_lookup(SYSCTLFN_CALL(&node));
|
|
if (error || newp == NULL)
|
|
return error;
|
|
|
|
len = strlen(addr);
|
|
if (len < 11 || len > 17)
|
|
return EINVAL;
|
|
|
|
/* Commit change */
|
|
if (ether_nonstatic_aton(enaddr, addr) != 0 ||
|
|
sockaddr_dl_setaddr(ifp->if_sadl, ifp->if_sadl->sdl_len,
|
|
enaddr, ETHER_ADDR_LEN) == NULL)
|
|
return EINVAL;
|
|
|
|
return error;
|
|
}
|
|
|