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Diffstat (limited to 'sys/netiso/iso.c')
| -rw-r--r-- | sys/netiso/iso.c | 920 |
1 files changed, 920 insertions, 0 deletions
diff --git a/sys/netiso/iso.c b/sys/netiso/iso.c new file mode 100644 index 0000000..922947f --- /dev/null +++ b/sys/netiso/iso.c @@ -0,0 +1,920 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)iso.c 8.2 (Berkeley) 11/15/93 + * $Id$ + */ + +/*********************************************************** + Copyright IBM Corporation 1987 + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the name of IBM not be +used in advertising or publicity pertaining to distribution of the +software without specific, written prior permission. + +IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING +ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL +IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR +ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, +WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, +ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS +SOFTWARE. + +******************************************************************/ + +/* + * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison + */ +/* + * $Header: /home/ncvs/src/sys/netiso/iso.c,v 1.1.1.1 1994/05/24 10:07:13 rgrimes Exp $ + * $Source: /home/ncvs/src/sys/netiso/iso.c,v $ + * + * iso.c: miscellaneous routines to support the iso address family + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/ioctl.h> +#include <sys/mbuf.h> +#include <sys/domain.h> +#include <sys/protosw.h> +#include <sys/socket.h> +#include <sys/socketvar.h> +#include <sys/errno.h> + +#include <net/if.h> +#include <net/route.h> + +#include <netiso/iso.h> +#include <netiso/iso_var.h> +#include <netiso/iso_snpac.h> +#include <netiso/iso_pcb.h> +#include <netiso/clnp.h> +#include <netiso/argo_debug.h> +#ifdef TUBA +#include <netiso/tuba_table.h> +#endif + +#ifdef ISO + +int iso_interfaces = 0; /* number of external interfaces */ +extern struct ifnet loif; /* loopback interface */ +int ether_output(); +void llc_rtrequest(); + +/* + * FUNCTION: iso_addrmatch1 + * + * PURPOSE: decide if the two iso_addrs passed are equal + * + * RETURNS: true if the addrs match, false if they do not + * + * SIDE EFFECTS: + * + * NOTES: + */ +iso_addrmatch1(isoaa, isoab) +register struct iso_addr *isoaa, *isoab; /* addresses to check */ +{ + u_int compare_len; + + IFDEBUG(D_ROUTE) + printf("iso_addrmatch1: comparing lengths: %d to %d\n", isoaa->isoa_len, + isoab->isoa_len); + printf("a:\n"); + dump_buf(isoaa->isoa_genaddr, isoaa->isoa_len); + printf("b:\n"); + dump_buf(isoab->isoa_genaddr, isoab->isoa_len); + ENDDEBUG + + if ((compare_len = isoaa->isoa_len) != isoab->isoa_len) { + IFDEBUG(D_ROUTE) + printf("iso_addrmatch1: returning false because of lengths\n"); + ENDDEBUG + return 0; + } + +#ifdef notdef + /* TODO : generalize this to all afis with masks */ + if( isoaa->isoa_afi == AFI_37 ) { + /* must not compare 2 least significant digits, or for + * that matter, the DSP + */ + compare_len = ADDR37_IDI_LEN - 1; + } +#endif + + IFDEBUG(D_ROUTE) + int i; + char *a, *b; + + a = isoaa->isoa_genaddr; + b = isoab->isoa_genaddr; + + for (i=0; i<compare_len; i++) { + printf("<%x=%x>", a[i]&0xff, b[i]&0xff); + if (a[i] != b[i]) { + printf("\naddrs are not equal at byte %d\n", i); + return(0); + } + } + printf("\n"); + printf("addrs are equal\n"); + return (1); + ENDDEBUG + return (!bcmp(isoaa->isoa_genaddr, isoab->isoa_genaddr, compare_len)); +} + +/* + * FUNCTION: iso_addrmatch + * + * PURPOSE: decide if the two sockadrr_isos passed are equal + * + * RETURNS: true if the addrs match, false if they do not + * + * SIDE EFFECTS: + * + * NOTES: + */ +iso_addrmatch(sisoa, sisob) +struct sockaddr_iso *sisoa, *sisob; /* addresses to check */ +{ + return(iso_addrmatch1(&sisoa->siso_addr, &sisob->siso_addr)); +} +#ifdef notdef +/* + * FUNCTION: iso_netmatch + * + * PURPOSE: similar to iso_addrmatch but takes sockaddr_iso + * as argument. + * + * RETURNS: true if same net, false if not + * + * SIDE EFFECTS: + * + * NOTES: + */ +iso_netmatch(sisoa, sisob) +struct sockaddr_iso *sisoa, *sisob; +{ + u_char bufa[sizeof(struct sockaddr_iso)]; + u_char bufb[sizeof(struct sockaddr_iso)]; + register int lena, lenb; + + lena = iso_netof(&sisoa->siso_addr, bufa); + lenb = iso_netof(&sisob->siso_addr, bufb); + + IFDEBUG(D_ROUTE) + printf("iso_netmatch: comparing lengths: %d to %d\n", lena, lenb); + printf("a:\n"); + dump_buf(bufa, lena); + printf("b:\n"); + dump_buf(bufb, lenb); + ENDDEBUG + + return ((lena == lenb) && (!bcmp(bufa, bufb, lena))); +} +#endif /* notdef */ + +/* + * FUNCTION: iso_hashchar + * + * PURPOSE: Hash all character in the buffer specified into + * a long. Return the long. + * + * RETURNS: The hash value. + * + * SIDE EFFECTS: + * + * NOTES: The hash is achieved by exclusive ORing 4 byte + * quantities. + */ +u_long +iso_hashchar(buf, len) +register caddr_t buf; /* buffer to pack from */ +register int len; /* length of buffer */ +{ + register u_long h = 0; + register int i; + + for (i=0; i<len; i+=4) { + register u_long l = 0; + + if ((len - i) < 4) { + /* buffer not multiple of 4 */ + switch (len - i) { + case 3: + l |= buf[i+2] << 8; + case 2: + l |= buf[i+1] << 16; + case 1: + l |= buf[i] << 24; + break; + default: + printf("iso_hashchar: unexpected value x%x\n", len - i); + break; + } + } else { + l |= buf[i] << 24; + l |= buf[i+1] << 16; + l |= buf[i+2] << 8; + l |= buf[i+3]; + } + + h ^= l; + } + + h ^= (u_long) (len % 4); + + return(h); +} +#ifdef notdef +/* + * FUNCTION: iso_hash + * + * PURPOSE: Fill in fields of afhash structure based upon addr passed. + * + * RETURNS: none + * + * SIDE EFFECTS: + * + * NOTES: + */ +iso_hash(siso, hp) +struct sockaddr_iso *siso; /* address to perform hash on */ +struct afhash *hp; /* RETURN: hash info here */ +{ + u_long buf[sizeof(struct sockaddr_iso)+1/4]; + register int bufsize; + + + bzero(buf, sizeof(buf)); + + bufsize = iso_netof(&siso->siso_addr, buf); + hp->afh_nethash = iso_hashchar((caddr_t)buf, bufsize); + + IFDEBUG(D_ROUTE) + printf("iso_hash: iso_netof: bufsize = %d\n", bufsize); + ENDDEBUG + + hp->afh_hosthash = iso_hashchar((caddr_t)&siso->siso_addr, + siso->siso_addr.isoa_len); + + IFDEBUG(D_ROUTE) + printf("iso_hash: %s: nethash = x%x, hosthash = x%x\n", + clnp_iso_addrp(&siso->siso_addr), hp->afh_nethash, + hp->afh_hosthash); + ENDDEBUG +} +/* + * FUNCTION: iso_netof + * + * PURPOSE: Extract the network portion of the iso address. + * The network portion of the iso address varies depending + * on the type of address. The network portion of the + * address will include the IDP. The network portion is: + * + * TYPE DESC + * t37 The AFI and x.121 (IDI) + * osinet The AFI, orgid, snetid + * rfc986 The AFI, vers and network part of + * internet address. + * + * RETURNS: number of bytes placed into buf. + * + * SIDE EFFECTS: + * + * NOTES: Buf is assumed to be big enough + */ +iso_netof(isoa, buf) +struct iso_addr *isoa; /* address */ +caddr_t buf; /* RESULT: network portion of address here */ +{ + u_int len = 1; /* length of afi */ + + switch (isoa->isoa_afi) { + case AFI_37: + /* + * Due to classic x.25 tunnel vision, there is no + * net portion of an x.121 address. For our purposes + * the AFI will do, so that all x.25 -type addresses + * map to the single x.25 SNPA. (Cannot have more than + * one, obviously). + */ + + break; + +/* case AFI_OSINET:*/ + case AFI_RFC986: { + u_short idi; /* value of idi */ + + /* osinet and rfc986 have idi in the same place */ + CTOH(isoa->rfc986_idi[0], isoa->rfc986_idi[1], idi); + + if (idi == IDI_OSINET) +/* + * Network portion of OSINET address can only be the IDI. Clearly, + * with one x25 interface, one could get to several orgids, and + * several snetids. + len += (ADDROSINET_IDI_LEN + OVLOSINET_ORGID_LEN + + OVLOSINET_SNETID_LEN); + */ + len += ADDROSINET_IDI_LEN; + else if (idi == IDI_RFC986) { + u_long inetaddr; + struct ovl_rfc986 *o986 = (struct ovl_rfc986 *)isoa; + + /* bump len to include idi and version (1 byte) */ + len += ADDRRFC986_IDI_LEN + 1; + + /* get inet addr long aligned */ + bcopy(o986->o986_inetaddr, &inetaddr, sizeof(inetaddr)); + inetaddr = ntohl(inetaddr); /* convert to host byte order */ + + IFDEBUG(D_ROUTE) + printf("iso_netof: isoa "); + dump_buf(isoa, sizeof(*isoa)); + printf("iso_netof: inetaddr 0x%x ", inetaddr); + ENDDEBUG + + /* bump len by size of network portion of inet address */ + if (IN_CLASSA(inetaddr)) { + len += 4-IN_CLASSA_NSHIFT/8; + IFDEBUG(D_ROUTE) + printf("iso_netof: class A net len is now %d\n", len); + ENDDEBUG + } else if (IN_CLASSB(inetaddr)) { + len += 4-IN_CLASSB_NSHIFT/8; + IFDEBUG(D_ROUTE) + printf("iso_netof: class B net len is now %d\n", len); + ENDDEBUG + } else { + len += 4-IN_CLASSC_NSHIFT/8; + IFDEBUG(D_ROUTE) + printf("iso_netof: class C net len is now %d\n", len); + ENDDEBUG + } + } else + len = 0; + } break; + + default: + len = 0; + } + + bcopy((caddr_t)isoa, buf, len); + IFDEBUG(D_ROUTE) + printf("iso_netof: isoa "); + dump_buf(isoa, len); + printf("iso_netof: net "); + dump_buf(buf, len); + ENDDEBUG + return len; +} +#endif /* notdef */ +/* + * Generic iso control operations (ioctl's). + * Ifp is 0 if not an interface-specific ioctl. + */ +/* ARGSUSED */ +iso_control(so, cmd, data, ifp) + struct socket *so; + int cmd; + caddr_t data; + register struct ifnet *ifp; +{ + register struct iso_ifreq *ifr = (struct iso_ifreq *)data; + register struct iso_ifaddr *ia = 0; + register struct ifaddr *ifa; + struct iso_ifaddr *oia; + struct iso_aliasreq *ifra = (struct iso_aliasreq *)data; + int error, hostIsNew, maskIsNew; + + /* + * Find address for this interface, if it exists. + */ + if (ifp) + for (ia = iso_ifaddr; ia; ia = ia->ia_next) + if (ia->ia_ifp == ifp) + break; + + switch (cmd) { + + case SIOCAIFADDR_ISO: + case SIOCDIFADDR_ISO: + if (ifra->ifra_addr.siso_family == AF_ISO) + for (oia = ia; ia; ia = ia->ia_next) { + if (ia->ia_ifp == ifp && + SAME_ISOADDR(&ia->ia_addr, &ifra->ifra_addr)) + break; + } + if ((so->so_state & SS_PRIV) == 0) + return (EPERM); + if (ifp == 0) + panic("iso_control"); + if (ia == (struct iso_ifaddr *)0) { + struct iso_ifaddr *nia; + if (cmd == SIOCDIFADDR_ISO) + return (EADDRNOTAVAIL); +#ifdef TUBA + /* XXXXXX can't be done in the proto init routines */ + if (tuba_tree == 0) + tuba_table_init(); +#endif + MALLOC(nia, struct iso_ifaddr *, sizeof(*nia), + M_IFADDR, M_WAITOK); + if (nia == (struct iso_ifaddr *)0) + return (ENOBUFS); + bzero((caddr_t)nia, sizeof(*nia)); + if (ia = iso_ifaddr) { + for ( ; ia->ia_next; ia = ia->ia_next) + ; + ia->ia_next = nia; + } else + iso_ifaddr = nia; + ia = nia; + if (ifa = ifp->if_addrlist) { + for ( ; ifa->ifa_next; ifa = ifa->ifa_next) + ; + ifa->ifa_next = (struct ifaddr *) ia; + } else + ifp->if_addrlist = (struct ifaddr *) ia; + ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr; + ia->ia_ifa.ifa_dstaddr + = (struct sockaddr *)&ia->ia_dstaddr; + ia->ia_ifa.ifa_netmask + = (struct sockaddr *)&ia->ia_sockmask; + ia->ia_ifp = ifp; + if (ifp != &loif) + iso_interfaces++; + } + break; + +#define cmdbyte(x) (((x) >> 8) & 0xff) + default: + if (cmdbyte(cmd) == 'a') + return (snpac_ioctl(so, cmd, data)); + if (ia == (struct iso_ifaddr *)0) + return (EADDRNOTAVAIL); + break; + } + switch (cmd) { + + case SIOCGIFADDR_ISO: + ifr->ifr_Addr = ia->ia_addr; + break; + + case SIOCGIFDSTADDR_ISO: + if ((ifp->if_flags & IFF_POINTOPOINT) == 0) + return (EINVAL); + ifr->ifr_Addr = ia->ia_dstaddr; + break; + + case SIOCGIFNETMASK_ISO: + ifr->ifr_Addr = ia->ia_sockmask; + break; + + case SIOCAIFADDR_ISO: + maskIsNew = 0; hostIsNew = 1; error = 0; + if (ia->ia_addr.siso_family == AF_ISO) { + if (ifra->ifra_addr.siso_len == 0) { + ifra->ifra_addr = ia->ia_addr; + hostIsNew = 0; + } else if (SAME_ISOADDR(&ia->ia_addr, &ifra->ifra_addr)) + hostIsNew = 0; + } + if (ifra->ifra_mask.siso_len) { + iso_ifscrub(ifp, ia); + ia->ia_sockmask = ifra->ifra_mask; + maskIsNew = 1; + } + if ((ifp->if_flags & IFF_POINTOPOINT) && + (ifra->ifra_dstaddr.siso_family == AF_ISO)) { + iso_ifscrub(ifp, ia); + ia->ia_dstaddr = ifra->ifra_dstaddr; + maskIsNew = 1; /* We lie; but the effect's the same */ + } + if (ifra->ifra_addr.siso_family == AF_ISO && + (hostIsNew || maskIsNew)) { + error = iso_ifinit(ifp, ia, &ifra->ifra_addr, 0); + } + if (ifra->ifra_snpaoffset) + ia->ia_snpaoffset = ifra->ifra_snpaoffset; + return (error); + + case SIOCDIFADDR_ISO: + iso_ifscrub(ifp, ia); + if ((ifa = ifp->if_addrlist) == (struct ifaddr *)ia) + ifp->if_addrlist = ifa->ifa_next; + else { + while (ifa->ifa_next && + (ifa->ifa_next != (struct ifaddr *)ia)) + ifa = ifa->ifa_next; + if (ifa->ifa_next) + ifa->ifa_next = ((struct ifaddr *)ia)->ifa_next; + else + printf("Couldn't unlink isoifaddr from ifp\n"); + } + oia = ia; + if (oia == (ia = iso_ifaddr)) { + iso_ifaddr = ia->ia_next; + } else { + while (ia->ia_next && (ia->ia_next != oia)) { + ia = ia->ia_next; + } + if (ia->ia_next) + ia->ia_next = oia->ia_next; + else + printf("Didn't unlink isoifadr from list\n"); + } + IFAFREE((&oia->ia_ifa)); + break; + + default: + if (ifp == 0 || ifp->if_ioctl == 0) + return (EOPNOTSUPP); + return ((*ifp->if_ioctl)(ifp, cmd, data)); + } + return (0); +} + +/* + * Delete any existing route for an interface. + */ +iso_ifscrub(ifp, ia) + register struct ifnet *ifp; + register struct iso_ifaddr *ia; +{ + int nsellength = ia->ia_addr.siso_tlen; + if ((ia->ia_flags & IFA_ROUTE) == 0) + return; + ia->ia_addr.siso_tlen = 0; + if (ifp->if_flags & IFF_LOOPBACK) + rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST); + else if (ifp->if_flags & IFF_POINTOPOINT) + rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST); + else { + rtinit(&(ia->ia_ifa), (int)RTM_DELETE, 0); + } + ia->ia_addr.siso_tlen = nsellength; + ia->ia_flags &= ~IFA_ROUTE; +} + +/* + * Initialize an interface's internet address + * and routing table entry. + */ +iso_ifinit(ifp, ia, siso, scrub) + register struct ifnet *ifp; + register struct iso_ifaddr *ia; + struct sockaddr_iso *siso; +{ + struct sockaddr_iso oldaddr; + int s = splimp(), error, nsellength; + + oldaddr = ia->ia_addr; + ia->ia_addr = *siso; + /* + * Give the interface a chance to initialize + * if this is its first address, + * and to validate the address if necessary. + */ + if (ifp->if_ioctl && + (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (caddr_t)ia))) { + splx(s); + ia->ia_addr = oldaddr; + return (error); + } + if (scrub) { + ia->ia_ifa.ifa_addr = (struct sockaddr *)&oldaddr; + iso_ifscrub(ifp, ia); + ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr; + } + /* XXX -- The following is here temporarily out of laziness + in not changing every ethernet driver's if_ioctl routine */ + if (ifp->if_output == ether_output) { + ia->ia_ifa.ifa_rtrequest = llc_rtrequest; + ia->ia_ifa.ifa_flags |= RTF_CLONING; + } + /* + * Add route for the network. + */ + nsellength = ia->ia_addr.siso_tlen; + ia->ia_addr.siso_tlen = 0; + if (ifp->if_flags & IFF_LOOPBACK) { + ia->ia_ifa.ifa_dstaddr = ia->ia_ifa.ifa_addr; + error = rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST|RTF_UP); + } else if (ifp->if_flags & IFF_POINTOPOINT && + ia->ia_dstaddr.siso_family == AF_ISO) + error = rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST|RTF_UP); + else { + rt_maskedcopy(ia->ia_ifa.ifa_addr, ia->ia_ifa.ifa_dstaddr, + ia->ia_ifa.ifa_netmask); + ia->ia_dstaddr.siso_nlen = + min(ia->ia_addr.siso_nlen, (ia->ia_sockmask.siso_len - 6)); + error = rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_UP); + } + ia->ia_addr.siso_tlen = nsellength; + ia->ia_flags |= IFA_ROUTE; + splx(s); + return (error); +} +#ifdef notdef + +struct ifaddr * +iso_ifwithidi(addr) + register struct sockaddr *addr; +{ + register struct ifnet *ifp; + register struct ifaddr *ifa; + register u_int af = addr->sa_family; + + if (af != AF_ISO) + return (0); + IFDEBUG(D_ROUTE) + printf(">>> iso_ifwithidi addr\n"); + dump_isoaddr( (struct sockaddr_iso *)(addr)); + printf("\n"); + ENDDEBUG + for (ifp = ifnet; ifp; ifp = ifp->if_next) { + IFDEBUG(D_ROUTE) + printf("iso_ifwithidi ifnet %s\n", ifp->if_name); + ENDDEBUG + for (ifa = ifp->if_addrlist; ifa; ifa = ifa->ifa_next) { + IFDEBUG(D_ROUTE) + printf("iso_ifwithidi address "); + dump_isoaddr( (struct sockaddr_iso *)(ifa->ifa_addr)); + ENDDEBUG + if (ifa->ifa_addr->sa_family != addr->sa_family) + continue; + +#define IFA_SIS(ifa)\ + ((struct sockaddr_iso *)((ifa)->ifa_addr)) + + IFDEBUG(D_ROUTE) + printf(" af same, args to iso_eqtype:\n"); + printf("0x%x ", IFA_SIS(ifa)->siso_addr); + printf(" 0x%x\n", + &(((struct sockaddr_iso *)addr)->siso_addr)); + ENDDEBUG + + if (iso_eqtype(&(IFA_SIS(ifa)->siso_addr), + &(((struct sockaddr_iso *)addr)->siso_addr))) { + IFDEBUG(D_ROUTE) + printf("ifa_ifwithidi: ifa found\n"); + ENDDEBUG + return (ifa); + } + IFDEBUG(D_ROUTE) + printf(" iso_eqtype failed\n"); + ENDDEBUG + } + } + return ((struct ifaddr *)0); +} + +#endif /* notdef */ +/* + * FUNCTION: iso_ck_addr + * + * PURPOSE: return true if the iso_addr passed is + * within the legal size limit for an iso address. + * + * RETURNS: true or false + * + * SIDE EFFECTS: + * + */ +iso_ck_addr(isoa) +struct iso_addr *isoa; /* address to check */ +{ + return (isoa->isoa_len <= 20); + +} + +#ifdef notdef +/* + * FUNCTION: iso_eqtype + * + * PURPOSE: Determine if two iso addresses are of the same type. + * This is flaky. Really we should consider all type 47 addrs to be the + * same - but there do exist different structures for 47 addrs. + * Gosip adds a 3rd. + * + * RETURNS: true if the addresses are the same type + * + * SIDE EFFECTS: + * + * NOTES: By type, I mean rfc986, t37, or osinet + * + * This will first compare afis. If they match, then + * if the addr is not t37, the idis must be compared. + */ +iso_eqtype(isoaa, isoab) +struct iso_addr *isoaa; /* first addr to check */ +struct iso_addr *isoab; /* other addr to check */ +{ + if (isoaa->isoa_afi == isoab->isoa_afi) { + if (isoaa->isoa_afi == AFI_37) + return(1); + else + return (!bcmp(&isoaa->isoa_u, &isoab->isoa_u, 2)); + } + return(0); +} +#endif /* notdef */ +/* + * FUNCTION: iso_localifa() + * + * PURPOSE: Find an interface addresss having a given destination + * or at least matching the net. + * + * RETURNS: ptr to an interface address + * + * SIDE EFFECTS: + * + * NOTES: + */ +struct iso_ifaddr * +iso_localifa(siso) + register struct sockaddr_iso *siso; +{ + register struct iso_ifaddr *ia; + register char *cp1, *cp2, *cp3; + register struct ifnet *ifp; + struct iso_ifaddr *ia_maybe = 0; + /* + * We make one pass looking for both net matches and an exact + * dst addr. + */ + for (ia = iso_ifaddr; ia; ia = ia->ia_next) { + if ((ifp = ia->ia_ifp) == 0 || ((ifp->if_flags & IFF_UP) == 0)) + continue; + if (ifp->if_flags & IFF_POINTOPOINT) { + if ((ia->ia_dstaddr.siso_family == AF_ISO) && + SAME_ISOADDR(&ia->ia_dstaddr, siso)) + return (ia); + else + if (SAME_ISOADDR(&ia->ia_addr, siso)) + ia_maybe = ia; + continue; + } + if (ia->ia_sockmask.siso_len) { + char *cplim = ia->ia_sockmask.siso_len + (char *)&ia->ia_sockmask; + cp1 = ia->ia_sockmask.siso_data; + cp2 = siso->siso_data; + cp3 = ia->ia_addr.siso_data; + while (cp1 < cplim) + if (*cp1++ & (*cp2++ ^ *cp3++)) + goto next; + ia_maybe = ia; + } + if (SAME_ISOADDR(&ia->ia_addr, siso)) + return ia; + next:; + } + return ia_maybe; +} + +#ifdef TPCONS +#include <netiso/cons.h> +#endif /* TPCONS */ +/* + * FUNCTION: iso_nlctloutput + * + * PURPOSE: Set options at the network level + * + * RETURNS: E* + * + * SIDE EFFECTS: + * + * NOTES: This could embody some of the functions of + * rclnp_ctloutput and cons_ctloutput. + */ +iso_nlctloutput(cmd, optname, pcb, m) +int cmd; /* command:set or get */ +int optname; /* option of interest */ +caddr_t pcb; /* nl pcb */ +struct mbuf *m; /* data for set, buffer for get */ +{ + struct isopcb *isop = (struct isopcb *)pcb; + int error = 0; /* return value */ + caddr_t data; /* data for option */ + int data_len; /* data's length */ + + IFDEBUG(D_ISO) + printf("iso_nlctloutput: cmd %x, opt %x, pcb %x, m %x\n", + cmd, optname, pcb, m); + ENDDEBUG + + if ((cmd != PRCO_GETOPT) && (cmd != PRCO_SETOPT)) + return(EOPNOTSUPP); + + data = mtod(m, caddr_t); + data_len = (m)->m_len; + + IFDEBUG(D_ISO) + printf("iso_nlctloutput: data is:\n"); + dump_buf(data, data_len); + ENDDEBUG + + switch (optname) { + +#ifdef TPCONS + case CONSOPT_X25CRUD: + if (cmd == PRCO_GETOPT) { + error = EOPNOTSUPP; + break; + } + + if (data_len > MAXX25CRUDLEN) { + error = EINVAL; + break; + } + + IFDEBUG(D_ISO) + printf("iso_nlctloutput: setting x25 crud\n"); + ENDDEBUG + + bcopy(data, (caddr_t)isop->isop_x25crud, (unsigned)data_len); + isop->isop_x25crud_len = data_len; + break; +#endif /* TPCONS */ + + default: + error = EOPNOTSUPP; + } + if (cmd == PRCO_SETOPT) + m_freem(m); + return error; +} +#endif /* ISO */ + +#ifdef ARGO_DEBUG + +/* + * FUNCTION: dump_isoaddr + * + * PURPOSE: debugging + * + * RETURNS: nada + * + */ +dump_isoaddr(s) + struct sockaddr_iso *s; +{ + char *clnp_saddr_isop(); + register int i; + + if( s->siso_family == AF_ISO) { + printf("ISO address: suffixlen %d, %s\n", + s->siso_tlen, clnp_saddr_isop(s)); + } else if( s->siso_family == AF_INET) { + /* hack */ + struct sockaddr_in *sin = (struct sockaddr_in *)s; + + printf("%d.%d.%d.%d: %d", + (sin->sin_addr.s_addr>>24)&0xff, + (sin->sin_addr.s_addr>>16)&0xff, + (sin->sin_addr.s_addr>>8)&0xff, + (sin->sin_addr.s_addr)&0xff, + sin->sin_port); + } +} + +#endif /* ARGO_DEBUG */ |
