b3fc296326
and dom_sa_len members from struct domain. Pools of fixed-size objects are too rigid for sockaddr_dls, whose size can vary over a wide range. Return sockaddr_dl to its "historical" size. Now that I'm using malloc(9) instead of pool(9) to allocate sockaddr_dl, I can create a sockaddr_dl of any size in the kernel, so expanding sockaddr_dl is useless. Avoid using sizeof(struct sockaddr_dl) in the kernel. Introduce sockaddr_dl_alloc() for allocating & initializing an arbitrary sockaddr_dl on the heap. Add an argument, the sockaddr length, to sockaddr_alloc(), sockaddr_copy(), and sockaddr_dl_setaddr(). Constify: LLADDR() -> CLLADDR(). Where the kernel overwrites LLADDR(), use sockaddr_dl_setaddr(), instead. Used properly, sockaddr_dl_setaddr() will not overrun the end of the sockaddr.
219 lines
7.0 KiB
C
219 lines
7.0 KiB
C
/* $NetBSD: iso_proto.c,v 1.25 2007/08/30 02:17:38 dyoung Exp $ */
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/*-
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* Copyright (c) 1991, 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. 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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* @(#)iso_proto.c 8.2 (Berkeley) 2/9/95
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*/
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/***********************************************************
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Copyright IBM Corporation 1987
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of IBM not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/*
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* ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
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*/
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/*
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* iso_proto.c : protocol switch tables in the ISO domain
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*
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* ISO protocol family includes TP, CLTP, CLNP, 8208
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* TP and CLNP are implemented here.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: iso_proto.c,v 1.25 2007/08/30 02:17:38 dyoung Exp $");
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/protosw.h>
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#include <sys/domain.h>
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#include <sys/mbuf.h>
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#include <net/radix.h>
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#include <netiso/iso.h>
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#include <netiso/clnp.h>
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#include <netiso/tp_param.h>
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#include <netiso/tp_var.h>
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#include <netiso/esis.h>
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#include <netiso/idrp_var.h>
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#include <netiso/iso_pcb.h>
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#include <netiso/cltp_var.h>
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const int isoctlerrmap[PRC_NCMDS] = {
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0, 0, 0, 0,
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0, EMSGSIZE, EHOSTDOWN, EHOSTUNREACH,
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EHOSTUNREACH, EHOSTUNREACH, ECONNREFUSED, ECONNREFUSED,
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EMSGSIZE, EHOSTUNREACH, 0, 0,
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0, 0, 0, 0,
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ENOPROTOOPT
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};
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DOMAIN_DEFINE(isodomain); /* forward declare and add to link set */
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const struct protosw isosw[] = {
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/*
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* We need a datagram entry through which net mgmt programs can get
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* to the iso_control procedure (iso ioctls). Thus, a minimal
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* SOCK_DGRAM interface is provided here.
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* THIS ONE MUST BE FIRST: Kludge city : socket() says if(!proto) call
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* pffindtype, which gets the first entry that matches the type.
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* sigh.
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*/
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{SOCK_DGRAM, &isodomain, ISOPROTO_CLTP, PR_ATOMIC | PR_ADDR,
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0, cltp_output, 0, 0,
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cltp_usrreq,
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cltp_init, 0, 0, 0
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},
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/*
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* A datagram interface for clnp cannot co-exist with TP/CLNP
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* because CLNP has no way to discriminate incoming TP packets from
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* packets coming in for any other higher layer protocol.
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* Old way: set it up so that pffindproto(... dgm, clnp) fails.
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* New way: let pffindproto work (for x.25, thank you) but create
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* a clnp_usrreq() that returns error on PRU_ATTACH.
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*/
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{SOCK_DGRAM, &isodomain, ISOPROTO_CLNP, 0,
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0, clnp_output, 0, 0,
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clnp_usrreq,
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clnp_init, 0, clnp_slowtimo, clnp_drain,
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},
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/* raw clnp */
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{SOCK_RAW, &isodomain, ISOPROTO_RAW, PR_ATOMIC | PR_ADDR,
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rclnp_input, rclnp_output, 0, rclnp_ctloutput,
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clnp_usrreq,
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0, 0, 0, 0
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},
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/* ES-IS protocol */
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{SOCK_DGRAM, &isodomain, ISOPROTO_ESIS, PR_ATOMIC | PR_ADDR,
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esis_input, 0, esis_ctlinput, 0,
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esis_usrreq,
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esis_init, 0, 0, 0
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},
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/* ISOPROTO_INTRAISIS */
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{SOCK_DGRAM, &isodomain, ISOPROTO_INTRAISIS, PR_ATOMIC | PR_ADDR,
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isis_input, 0, 0, 0,
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esis_usrreq,
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0, 0, 0, 0
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},
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/* ISOPROTO_IDRP */
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{SOCK_DGRAM, &isodomain, ISOPROTO_IDRP, PR_ATOMIC | PR_ADDR,
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idrp_input, 0, 0, 0,
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idrp_usrreq,
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idrp_init, 0, 0, 0
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},
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/* ISOPROTO_TP */
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{SOCK_SEQPACKET, &isodomain, ISOPROTO_TP, PR_CONNREQUIRED | PR_WANTRCVD | PR_LISTEN | PR_ABRTACPTDIS,
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tpclnp_input, 0, tpclnp_ctlinput, tp_ctloutput,
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tp_usrreq,
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tp_init, tp_fasttimo, tp_slowtimo, tp_drain,
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},
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#ifdef TPCONS
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/* ISOPROTO_TP */
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{SOCK_SEQPACKET, &isodomain, ISOPROTO_TP0, PR_CONNREQUIRED | PR_WANTRCVD | PR_LISTEN | PR_ABRTACPTDIS,
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tpcons_input, 0, 0, tp_ctloutput,
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tp_usrreq,
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cons_init, 0, 0, 0,
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},
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#endif
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};
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extern struct ifqueue clnlintrq;
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struct domain isodomain = {
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.dom_family = PF_ISO,
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.dom_name = "iso-domain",
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.dom_init = NULL,
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.dom_externalize = NULL,
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.dom_dispose = NULL,
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.dom_protosw = isosw,
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.dom_protoswNPROTOSW = &isosw[sizeof(isosw) / sizeof(isosw[0])],
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.dom_rtattach = rn_inithead, /* rtattach */
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.dom_rtoffset = 48, /* rtoffset */
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.dom_maxrtkey = sizeof(struct sockaddr_iso), /* maxkeylen */
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.dom_ifattach = NULL,
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.dom_ifdetach = NULL,
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.dom_ifqueues = { &clnlintrq, NULL }, /* ifqueues */
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.dom_link = { NULL },
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.dom_mowner = MOWNER_INIT("",""),
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.dom_rtcache = LIST_HEAD_INITIALIZER(isodomain.dom_rtcache),
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.dom_sockaddr_cmp = sockaddr_iso_cmp
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};
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int
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sockaddr_iso_cmp(const struct sockaddr *sa1, const struct sockaddr *sa2)
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{
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int rc;
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uint_fast8_t len, nlen;
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const uint_fast8_t addrofs = offsetof(struct sockaddr_iso, siso_data);
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const struct sockaddr_iso *siso1, *siso2;
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siso1 = satocsiso(sa1);
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siso2 = satocsiso(sa2);
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len = MIN(siso1->siso_len, siso2->siso_len);
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/* No siso_nlen present? */
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if (len < addrofs)
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return siso1->siso_len - siso2->siso_len;
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nlen = MIN(siso1->siso_nlen, siso2->siso_nlen);
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if (nlen > addrofs &&
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(rc = memcmp(siso1->siso_data, siso2->siso_data, nlen)) != 0)
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return rc;
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return siso1->siso_nlen - siso2->siso_nlen;
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}
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