075ea2cfea
which can't be handled by netmask, and ifa_ifwithnet() didn't find the interface associated with an adress if it was in the same block but not with the same prefix. This prevented 'route add' and atalkd to work properly with some network configs. This has been discussed on tech-net some weeks ago.
798 lines
20 KiB
C
798 lines
20 KiB
C
/* $NetBSD: if.c,v 1.51 1999/08/24 16:02:27 bouyer Exp $ */
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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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/*
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* Copyright (c) 1980, 1986, 1993
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* The Regents of the University of California. 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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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* @(#)if.c 8.5 (Berkeley) 1/9/95
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*/
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#include "opt_inet.h"
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#include "opt_compat_linux.h"
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#include "opt_compat_svr4.h"
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#include "opt_compat_43.h"
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#include "opt_atalk.h"
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#include <sys/param.h>
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#include <sys/mbuf.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/protosw.h>
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#include <sys/kernel.h>
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#include <sys/ioctl.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_types.h>
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#include <net/radix.h>
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#ifdef NETATALK
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#include <netatalk/at_extern.h>
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#include <netatalk/at.h>
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#endif
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#ifdef INET6
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/*XXX*/
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#include <netinet/in.h>
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#endif
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int ifqmaxlen = IFQ_MAXLEN;
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void if_slowtimo __P((void *arg));
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#ifdef INET6
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/*
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* XXX: declare here to avoid to include many inet6 related files..
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* should be more generalized?
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*/
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extern void nd6_setmtu __P((struct ifnet *));
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#endif
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/*
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* Network interface utility routines.
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*
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* Routines with ifa_ifwith* names take sockaddr *'s as
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* parameters.
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*/
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void
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ifinit()
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{
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if_slowtimo(NULL);
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}
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int if_index = 0;
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struct ifaddr **ifnet_addrs = NULL;
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struct ifnet **ifindex2ifnet = NULL;
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/*
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* Attach an interface to the
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* list of "active" interfaces.
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*/
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void
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if_attach(ifp)
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struct ifnet *ifp;
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{
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unsigned socksize, ifasize;
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int namelen, masklen;
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register struct sockaddr_dl *sdl;
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register struct ifaddr *ifa;
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static size_t if_indexlim = 8;
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if (if_index == 0)
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TAILQ_INIT(&ifnet);
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TAILQ_INIT(&ifp->if_addrlist);
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TAILQ_INSERT_TAIL(&ifnet, ifp, if_list);
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ifp->if_index = ++if_index;
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/*
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* We have some arrays that should be indexed by if_index.
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* since if_index will grow dynamically, they should grow too.
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* struct ifadd **ifnet_addrs
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* struct ifnet **ifindex2ifnet
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*/
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if (ifnet_addrs == 0 || ifindex2ifnet == 0 || if_index >= if_indexlim) {
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size_t n;
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caddr_t q;
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while (if_index >= if_indexlim)
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if_indexlim <<= 1;
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/* grow ifnet_addrs */
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n = if_indexlim * sizeof(ifa);
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q = (caddr_t)malloc(n, M_IFADDR, M_WAITOK);
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bzero(q, n);
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if (ifnet_addrs) {
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bcopy((caddr_t)ifnet_addrs, q, n/2);
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free((caddr_t)ifnet_addrs, M_IFADDR);
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}
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ifnet_addrs = (struct ifaddr **)q;
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/* grow ifindex2ifnet */
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n = if_indexlim * sizeof(struct ifnet *);
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q = (caddr_t)malloc(n, M_IFADDR, M_WAITOK);
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bzero(q, n);
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if (ifindex2ifnet) {
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bcopy((caddr_t)ifindex2ifnet, q, n/2);
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free((caddr_t)ifindex2ifnet, M_IFADDR);
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}
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ifindex2ifnet = (struct ifnet **)q;
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}
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ifindex2ifnet[if_index] = ifp;
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/*
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* create a Link Level name for this device
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*/
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namelen = strlen(ifp->if_xname);
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masklen = offsetof(struct sockaddr_dl, sdl_data[0]) + namelen;
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socksize = masklen + ifp->if_addrlen;
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#define ROUNDUP(a) (1 + (((a) - 1) | (sizeof(long) - 1)))
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if (socksize < sizeof(*sdl))
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socksize = sizeof(*sdl);
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socksize = ROUNDUP(socksize);
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ifasize = sizeof(*ifa) + 2 * socksize;
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ifa = (struct ifaddr *)malloc(ifasize, M_IFADDR, M_WAITOK);
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bzero((caddr_t)ifa, ifasize);
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sdl = (struct sockaddr_dl *)(ifa + 1);
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sdl->sdl_len = socksize;
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sdl->sdl_family = AF_LINK;
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bcopy(ifp->if_xname, sdl->sdl_data, namelen);
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sdl->sdl_nlen = namelen;
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sdl->sdl_index = ifp->if_index;
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sdl->sdl_type = ifp->if_type;
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ifnet_addrs[if_index] = ifa;
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ifa->ifa_ifp = ifp;
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ifa->ifa_rtrequest = link_rtrequest;
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TAILQ_INSERT_HEAD(&ifp->if_addrlist, ifa, ifa_list);
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ifa->ifa_addr = (struct sockaddr *)sdl;
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ifp->if_sadl = sdl;
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sdl = (struct sockaddr_dl *)(socksize + (caddr_t)sdl);
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ifa->ifa_netmask = (struct sockaddr *)sdl;
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sdl->sdl_len = masklen;
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while (namelen != 0)
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sdl->sdl_data[--namelen] = 0xff;
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if (ifp->if_snd.ifq_maxlen == 0)
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ifp->if_snd.ifq_maxlen = ifqmaxlen;
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ifp->if_broadcastaddr = 0; /* reliably crash if used uninitialized */
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}
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/*
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* Locate an interface based on a complete address.
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*/
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/*ARGSUSED*/
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struct ifaddr *
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ifa_ifwithaddr(addr)
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register struct sockaddr *addr;
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{
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register struct ifnet *ifp;
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register struct ifaddr *ifa;
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#define equal(a1, a2) \
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(bcmp((caddr_t)(a1), (caddr_t)(a2), ((struct sockaddr *)(a1))->sa_len) == 0)
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for (ifp = ifnet.tqh_first; ifp != 0; ifp = ifp->if_list.tqe_next)
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for (ifa = ifp->if_addrlist.tqh_first; ifa != 0; ifa = ifa->ifa_list.tqe_next) {
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if (ifa->ifa_addr->sa_family != addr->sa_family)
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continue;
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if (equal(addr, ifa->ifa_addr))
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return (ifa);
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if ((ifp->if_flags & IFF_BROADCAST) && ifa->ifa_broadaddr &&
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/* IP6 doesn't have broadcast */
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ifa->ifa_broadaddr->sa_len != 0 &&
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equal(ifa->ifa_broadaddr, addr))
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return (ifa);
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}
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return ((struct ifaddr *)0);
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}
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/*
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* Locate the point to point interface with a given destination address.
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*/
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/*ARGSUSED*/
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struct ifaddr *
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ifa_ifwithdstaddr(addr)
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register struct sockaddr *addr;
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{
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register struct ifnet *ifp;
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register struct ifaddr *ifa;
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for (ifp = ifnet.tqh_first; ifp != 0; ifp = ifp->if_list.tqe_next)
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if (ifp->if_flags & IFF_POINTOPOINT)
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for (ifa = ifp->if_addrlist.tqh_first; ifa != 0; ifa = ifa->ifa_list.tqe_next) {
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if (ifa->ifa_addr->sa_family != addr->sa_family ||
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ifa->ifa_dstaddr == NULL)
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continue;
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if (equal(addr, ifa->ifa_dstaddr))
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return (ifa);
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}
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return ((struct ifaddr *)0);
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}
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/*
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* Find an interface on a specific network. If many, choice
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* is most specific found.
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*/
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struct ifaddr *
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ifa_ifwithnet(addr)
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struct sockaddr *addr;
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{
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register struct ifnet *ifp;
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register struct ifaddr *ifa;
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struct ifaddr *ifa_maybe = 0;
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u_int af = addr->sa_family;
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char *addr_data = addr->sa_data, *cplim;
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if (af == AF_LINK) {
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register struct sockaddr_dl *sdl = (struct sockaddr_dl *)addr;
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if (sdl->sdl_index && sdl->sdl_index <= if_index)
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return (ifnet_addrs[sdl->sdl_index]);
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}
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#ifdef NETATALK
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if (af == AF_APPLETALK) {
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for (ifp = ifnet.tqh_first; ifp != 0;
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ifp = ifp->if_list.tqe_next) {
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ifa = at_ifawithnet((struct sockaddr_at *)addr, ifp);
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if (ifa)
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return ifa;
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}
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return NULL;
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}
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#endif
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for (ifp = ifnet.tqh_first; ifp != 0; ifp = ifp->if_list.tqe_next)
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for (ifa = ifp->if_addrlist.tqh_first; ifa != 0; ifa = ifa->ifa_list.tqe_next) {
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register char *cp, *cp2, *cp3;
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if (ifa->ifa_addr->sa_family != af ||
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ifa->ifa_netmask == 0)
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next: continue;
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cp = addr_data;
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cp2 = ifa->ifa_addr->sa_data;
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cp3 = ifa->ifa_netmask->sa_data;
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cplim = (char *)ifa->ifa_netmask +
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ifa->ifa_netmask->sa_len;
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while (cp3 < cplim)
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if ((*cp++ ^ *cp2++) & *cp3++)
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/* want to continue for() loop */
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goto next;
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if (ifa_maybe == 0 ||
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rn_refines((caddr_t)ifa->ifa_netmask,
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(caddr_t)ifa_maybe->ifa_netmask))
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ifa_maybe = ifa;
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}
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return (ifa_maybe);
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}
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/*
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* Find the interface of the addresss.
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*/
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struct ifaddr *
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ifa_ifwithladdr(addr)
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struct sockaddr *addr;
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{
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struct ifaddr *ia;
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if ((ia = ifa_ifwithaddr(addr)) || (ia = ifa_ifwithdstaddr(addr))
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|| (ia = ifa_ifwithnet(addr)))
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return (ia);
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return (NULL);
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}
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/*
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* Find an interface using a specific address family
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*/
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struct ifaddr *
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ifa_ifwithaf(af)
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register int af;
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{
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register struct ifnet *ifp;
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register struct ifaddr *ifa;
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for (ifp = ifnet.tqh_first; ifp != 0; ifp = ifp->if_list.tqe_next)
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for (ifa = ifp->if_addrlist.tqh_first; ifa != 0; ifa = ifa->ifa_list.tqe_next)
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if (ifa->ifa_addr->sa_family == af)
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return (ifa);
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return ((struct ifaddr *)0);
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}
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/*
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* Find an interface address specific to an interface best matching
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* a given address.
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*/
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struct ifaddr *
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ifaof_ifpforaddr(addr, ifp)
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struct sockaddr *addr;
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register struct ifnet *ifp;
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{
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register struct ifaddr *ifa;
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register char *cp, *cp2, *cp3;
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register char *cplim;
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struct ifaddr *ifa_maybe = 0;
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u_int af = addr->sa_family;
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if (af >= AF_MAX)
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return (0);
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for (ifa = ifp->if_addrlist.tqh_first; ifa != 0; ifa = ifa->ifa_list.tqe_next) {
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if (ifa->ifa_addr->sa_family != af)
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continue;
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ifa_maybe = ifa;
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if (ifa->ifa_netmask == 0) {
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if (equal(addr, ifa->ifa_addr) ||
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(ifa->ifa_dstaddr && equal(addr, ifa->ifa_dstaddr)))
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return (ifa);
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continue;
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}
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cp = addr->sa_data;
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cp2 = ifa->ifa_addr->sa_data;
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cp3 = ifa->ifa_netmask->sa_data;
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cplim = ifa->ifa_netmask->sa_len + (char *)ifa->ifa_netmask;
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for (; cp3 < cplim; cp3++)
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if ((*cp++ ^ *cp2++) & *cp3)
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break;
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if (cp3 == cplim)
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return (ifa);
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}
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return (ifa_maybe);
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}
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#include <net/route.h>
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/*
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* Default action when installing a route with a Link Level gateway.
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* Lookup an appropriate real ifa to point to.
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* This should be moved to /sys/net/link.c eventually.
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*/
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void
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link_rtrequest(cmd, rt, sa)
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int cmd;
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register struct rtentry *rt;
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struct sockaddr *sa;
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{
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register struct ifaddr *ifa;
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struct sockaddr *dst;
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struct ifnet *ifp;
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if (cmd != RTM_ADD || ((ifa = rt->rt_ifa) == 0) ||
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((ifp = ifa->ifa_ifp) == 0) || ((dst = rt_key(rt)) == 0))
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return;
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if ((ifa = ifaof_ifpforaddr(dst, ifp)) != NULL) {
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IFAFREE(rt->rt_ifa);
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rt->rt_ifa = ifa;
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ifa->ifa_refcnt++;
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if (ifa->ifa_rtrequest && ifa->ifa_rtrequest != link_rtrequest)
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ifa->ifa_rtrequest(cmd, rt, sa);
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}
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}
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/*
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* Mark an interface down and notify protocols of
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* the transition.
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* NOTE: must be called at splsoftnet or equivalent.
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*/
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void
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if_down(ifp)
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register struct ifnet *ifp;
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{
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register struct ifaddr *ifa;
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ifp->if_flags &= ~IFF_UP;
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for (ifa = ifp->if_addrlist.tqh_first; ifa != 0; ifa = ifa->ifa_list.tqe_next)
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pfctlinput(PRC_IFDOWN, ifa->ifa_addr);
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if_qflush(&ifp->if_snd);
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rt_ifmsg(ifp);
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}
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|
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/*
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* Mark an interface up and notify protocols of
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* the transition.
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|
* NOTE: must be called at splsoftnet or equivalent.
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*/
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void
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if_up(ifp)
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register struct ifnet *ifp;
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{
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#ifdef notyet
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register struct ifaddr *ifa;
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#endif
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ifp->if_flags |= IFF_UP;
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#ifdef notyet
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/* this has no effect on IP, and will kill all ISO connections XXX */
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for (ifa = ifp->if_addrlist.tqh_first; ifa != 0;
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ifa = ifa->ifa_list.tqe_next)
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pfctlinput(PRC_IFUP, ifa->ifa_addr);
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#endif
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rt_ifmsg(ifp);
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#ifdef INET6
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in6_if_up(ifp);
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#endif
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}
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/*
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|
* Flush an interface queue.
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*/
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void
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if_qflush(ifq)
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register struct ifqueue *ifq;
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{
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register struct mbuf *m, *n;
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n = ifq->ifq_head;
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while ((m = n) != NULL) {
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n = m->m_act;
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m_freem(m);
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}
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ifq->ifq_head = 0;
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ifq->ifq_tail = 0;
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ifq->ifq_len = 0;
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}
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/*
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* Handle interface watchdog timer routines. Called
|
|
* from softclock, we decrement timers (if set) and
|
|
* call the appropriate interface routine on expiration.
|
|
*/
|
|
void
|
|
if_slowtimo(arg)
|
|
void *arg;
|
|
{
|
|
register struct ifnet *ifp;
|
|
int s = splimp();
|
|
|
|
for (ifp = ifnet.tqh_first; ifp != 0; ifp = ifp->if_list.tqe_next) {
|
|
if (ifp->if_timer == 0 || --ifp->if_timer)
|
|
continue;
|
|
if (ifp->if_watchdog)
|
|
(*ifp->if_watchdog)(ifp);
|
|
}
|
|
splx(s);
|
|
timeout(if_slowtimo, NULL, hz / IFNET_SLOWHZ);
|
|
}
|
|
|
|
/*
|
|
* Map interface name to
|
|
* interface structure pointer.
|
|
*/
|
|
struct ifnet *
|
|
ifunit(name)
|
|
register char *name;
|
|
{
|
|
register struct ifnet *ifp;
|
|
|
|
for (ifp = ifnet.tqh_first; ifp != 0; ifp = ifp->if_list.tqe_next)
|
|
if (strcmp(ifp->if_xname, name) == 0)
|
|
return (ifp);
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
|
|
/*
|
|
* Map interface name in a sockaddr_dl to
|
|
* interface structure pointer.
|
|
*/
|
|
struct ifnet *
|
|
if_withname(sa)
|
|
struct sockaddr *sa;
|
|
{
|
|
char ifname[IFNAMSIZ+1];
|
|
struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
|
|
|
|
if ( (sa->sa_family != AF_LINK) || (sdl->sdl_nlen == 0) ||
|
|
(sdl->sdl_nlen > IFNAMSIZ) )
|
|
return NULL;
|
|
|
|
/*
|
|
* ifunit wants a null-terminated name. It may not be null-terminated
|
|
* in the sockaddr. We don't want to change the caller's sockaddr,
|
|
* and there might not be room to put the trailing null anyway, so we
|
|
* make a local copy that we know we can null terminate safely.
|
|
*/
|
|
|
|
bcopy(sdl->sdl_data, ifname, sdl->sdl_nlen);
|
|
ifname[sdl->sdl_nlen] = '\0';
|
|
return ifunit(ifname);
|
|
}
|
|
|
|
|
|
/*
|
|
* Interface ioctls.
|
|
*/
|
|
int
|
|
ifioctl(so, cmd, data, p)
|
|
struct socket *so;
|
|
u_long cmd;
|
|
caddr_t data;
|
|
struct proc *p;
|
|
{
|
|
register struct ifnet *ifp;
|
|
register struct ifreq *ifr;
|
|
int error = 0;
|
|
short oif_flags;
|
|
|
|
switch (cmd) {
|
|
|
|
case SIOCGIFCONF:
|
|
case OSIOCGIFCONF:
|
|
return (ifconf(cmd, data));
|
|
}
|
|
ifr = (struct ifreq *)data;
|
|
ifp = ifunit(ifr->ifr_name);
|
|
if (ifp == 0)
|
|
return (ENXIO);
|
|
oif_flags = ifp->if_flags;
|
|
switch (cmd) {
|
|
|
|
case SIOCGIFFLAGS:
|
|
ifr->ifr_flags = ifp->if_flags;
|
|
break;
|
|
|
|
case SIOCGIFMETRIC:
|
|
ifr->ifr_metric = ifp->if_metric;
|
|
break;
|
|
|
|
case SIOCGIFMTU:
|
|
ifr->ifr_mtu = ifp->if_mtu;
|
|
break;
|
|
|
|
case SIOCSIFFLAGS:
|
|
if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
|
|
return (error);
|
|
if (ifp->if_flags & IFF_UP && (ifr->ifr_flags & IFF_UP) == 0) {
|
|
int s = splimp();
|
|
if_down(ifp);
|
|
splx(s);
|
|
}
|
|
if (ifr->ifr_flags & IFF_UP && (ifp->if_flags & IFF_UP) == 0) {
|
|
int s = splimp();
|
|
if_up(ifp);
|
|
splx(s);
|
|
}
|
|
ifp->if_flags = (ifp->if_flags & IFF_CANTCHANGE) |
|
|
(ifr->ifr_flags &~ IFF_CANTCHANGE);
|
|
if (ifp->if_ioctl)
|
|
(void) (*ifp->if_ioctl)(ifp, cmd, data);
|
|
break;
|
|
|
|
case SIOCSIFMETRIC:
|
|
if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
|
|
return (error);
|
|
ifp->if_metric = ifr->ifr_metric;
|
|
break;
|
|
|
|
case SIOCSIFMTU:
|
|
{
|
|
u_long oldmtu = ifp->if_mtu;
|
|
|
|
error = suser(p->p_ucred, &p->p_acflag);
|
|
if (error)
|
|
return (error);
|
|
if (ifp->if_ioctl == NULL)
|
|
return (EOPNOTSUPP);
|
|
error = (*ifp->if_ioctl)(ifp, cmd, data);
|
|
|
|
/*
|
|
* If the link MTU changed, do network layer specific procedure.
|
|
*/
|
|
if (ifp->if_mtu != oldmtu) {
|
|
#ifdef INET6
|
|
nd6_setmtu(ifp);
|
|
#endif
|
|
}
|
|
break;
|
|
}
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
case SIOCSIFMEDIA:
|
|
if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
|
|
return (error);
|
|
/* FALLTHROUGH */
|
|
case SIOCGIFMEDIA:
|
|
if (ifp->if_ioctl == 0)
|
|
return (EOPNOTSUPP);
|
|
error = (*ifp->if_ioctl)(ifp, cmd, data);
|
|
break;
|
|
|
|
case SIOCSDRVSPEC:
|
|
/* XXX: need to pass proc pointer through to driver... */
|
|
if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
|
|
return (error);
|
|
/* FALLTHROUGH */
|
|
default:
|
|
if (so->so_proto == 0)
|
|
return (EOPNOTSUPP);
|
|
#if !defined(COMPAT_43) && !defined(COMPAT_LINUX) && !defined(COMPAT_SVR4)
|
|
error = ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL,
|
|
(struct mbuf *)cmd, (struct mbuf *)data,
|
|
(struct mbuf *)ifp, p));
|
|
#else
|
|
{
|
|
int ocmd = cmd;
|
|
|
|
switch (cmd) {
|
|
|
|
case SIOCSIFADDR:
|
|
case SIOCSIFDSTADDR:
|
|
case SIOCSIFBRDADDR:
|
|
case SIOCSIFNETMASK:
|
|
#if BYTE_ORDER != BIG_ENDIAN
|
|
if (ifr->ifr_addr.sa_family == 0 &&
|
|
ifr->ifr_addr.sa_len < 16) {
|
|
ifr->ifr_addr.sa_family = ifr->ifr_addr.sa_len;
|
|
ifr->ifr_addr.sa_len = 16;
|
|
}
|
|
#else
|
|
if (ifr->ifr_addr.sa_len == 0)
|
|
ifr->ifr_addr.sa_len = 16;
|
|
#endif
|
|
break;
|
|
|
|
case OSIOCGIFADDR:
|
|
cmd = SIOCGIFADDR;
|
|
break;
|
|
|
|
case OSIOCGIFDSTADDR:
|
|
cmd = SIOCGIFDSTADDR;
|
|
break;
|
|
|
|
case OSIOCGIFBRDADDR:
|
|
cmd = SIOCGIFBRDADDR;
|
|
break;
|
|
|
|
case OSIOCGIFNETMASK:
|
|
cmd = SIOCGIFNETMASK;
|
|
}
|
|
|
|
error = ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL,
|
|
(struct mbuf *)cmd, (struct mbuf *)data,
|
|
(struct mbuf *)ifp, p));
|
|
|
|
switch (ocmd) {
|
|
case OSIOCGIFADDR:
|
|
case OSIOCGIFDSTADDR:
|
|
case OSIOCGIFBRDADDR:
|
|
case OSIOCGIFNETMASK:
|
|
*(u_int16_t *)&ifr->ifr_addr = ifr->ifr_addr.sa_family;
|
|
}
|
|
}
|
|
#endif /* COMPAT_43 */
|
|
break;
|
|
}
|
|
|
|
if (((oif_flags ^ ifp->if_flags) & IFF_UP) != 0) {
|
|
#ifdef INET6
|
|
if ((ifp->if_flags & IFF_UP) != 0) {
|
|
int s = splimp();
|
|
in6_if_up(ifp);
|
|
splx(s);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Return interface configuration
|
|
* of system. List may be used
|
|
* in later ioctl's (above) to get
|
|
* other information.
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
|
ifconf(cmd, data)
|
|
u_long cmd;
|
|
caddr_t data;
|
|
{
|
|
register struct ifconf *ifc = (struct ifconf *)data;
|
|
register struct ifnet *ifp;
|
|
register struct ifaddr *ifa;
|
|
struct ifreq ifr, *ifrp;
|
|
int space = ifc->ifc_len, error = 0;
|
|
|
|
ifrp = ifc->ifc_req;
|
|
for (ifp = ifnet.tqh_first;
|
|
space >= sizeof (ifr) && ifp != 0; ifp = ifp->if_list.tqe_next) {
|
|
bcopy(ifp->if_xname, ifr.ifr_name, IFNAMSIZ);
|
|
if ((ifa = ifp->if_addrlist.tqh_first) == 0) {
|
|
bzero((caddr_t)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
|
|
error = copyout((caddr_t)&ifr, (caddr_t)ifrp,
|
|
sizeof(ifr));
|
|
if (error)
|
|
break;
|
|
space -= sizeof (ifr), ifrp++;
|
|
} else
|
|
for (; space >= sizeof (ifr) && ifa != 0; ifa = ifa->ifa_list.tqe_next) {
|
|
register struct sockaddr *sa = ifa->ifa_addr;
|
|
#if defined(COMPAT_43) || defined(COMPAT_LINUX) || defined(COMPAT_SVR4)
|
|
if (cmd == OSIOCGIFCONF) {
|
|
struct osockaddr *osa =
|
|
(struct osockaddr *)&ifr.ifr_addr;
|
|
ifr.ifr_addr = *sa;
|
|
osa->sa_family = sa->sa_family;
|
|
error = copyout((caddr_t)&ifr, (caddr_t)ifrp,
|
|
sizeof (ifr));
|
|
ifrp++;
|
|
} else
|
|
#endif
|
|
if (sa->sa_len <= sizeof(*sa)) {
|
|
ifr.ifr_addr = *sa;
|
|
error = copyout((caddr_t)&ifr, (caddr_t)ifrp,
|
|
sizeof (ifr));
|
|
ifrp++;
|
|
} else {
|
|
space -= sa->sa_len - sizeof(*sa);
|
|
if (space < sizeof (ifr))
|
|
break;
|
|
error = copyout((caddr_t)&ifr, (caddr_t)ifrp,
|
|
sizeof (ifr.ifr_name));
|
|
if (error == 0)
|
|
error = copyout((caddr_t)sa,
|
|
(caddr_t)&ifrp->ifr_addr, sa->sa_len);
|
|
ifrp = (struct ifreq *)
|
|
(sa->sa_len + (caddr_t)&ifrp->ifr_addr);
|
|
}
|
|
if (error)
|
|
break;
|
|
space -= sizeof (ifr);
|
|
}
|
|
}
|
|
ifc->ifc_len -= space;
|
|
return (error);
|
|
}
|