07b064e02e
Some of the stuff (e.g., rarpd, bootpd, dhcpd etc., libsa) still will only support Ethernet. Tcpdump itself should be ok, but libpcap needs lot of work. For the detailed change history, look at the commit log entries for the is-newarp branch.
139 lines
3.9 KiB
C
139 lines
3.9 KiB
C
/*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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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. 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 TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/device.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <netinet/in.h>
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#include <netinet/if_inarp.h>
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#include <ipkdb/ipkdb.h>
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#include <machine/ipkdb.h>
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/* These should be in <net/if_sl.h> or some such! */
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#define FRAME_END 0xc0 /* Frame End */
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#define FRAME_ESCAPE 0xdb /* Frame Esc */
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#define TRANS_FRAME_END 0xdc /* transposed frame end */
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#define TRANS_FRAME_ESCAPE 0xdd /* transposed frame esc */
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struct cfdriver ipkdbslip_cd = {
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NULL, "ipkdb", DV_DULL
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};
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static int
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ipkdbrcv(kip, buf, poll)
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struct ipkdb_if *kip;
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u_char *buf;
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int poll;
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{
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int c, len = 0;
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/* Fake an ether header: */
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ipkdbcopy(kip->myenetaddr, buf, sizeof kip->myenetaddr);
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buf += sizeof kip->myenetaddr;
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ipkdbcopy(kip->hisenetaddr, buf, sizeof kip->hisenetaddr);
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buf += sizeof kip->hisenetaddr;
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*buf++ = ETHERTYPE_IP >> 8;
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*buf++ = (u_char)ETHERTYPE_IP;
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do {
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switch ((c = kip->getc(kip, poll))) {
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case -1:
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break;
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case TRANS_FRAME_ESCAPE:
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case TRANS_FRAME_END:
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if (kip->drvflags&0x100) {
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kip->drvflags &= ~0x100;
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c = c == TRANS_FRAME_ESCAPE ? FRAME_ESCAPE : FRAME_END;
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}
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default:
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if (kip->fill >= 0 && kip->fill < ETHERMTU)
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buf[kip->fill++] = c;
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else
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kip->fill = -1;
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break;
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case FRAME_END:
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len = kip->fill;
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kip->fill = 0;
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break;
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case FRAME_ESCAPE:
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kip->drvflags |= 0x100;
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break;
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}
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} while (!poll && len <= 0);
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return len ? len + 14 : 0;
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}
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static void
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ipkdbsend(kip, buf, l)
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struct ipkdb_if *kip;
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u_char *buf;
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int l;
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{
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buf += 14;
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l -= 14;
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while (--l >= 0) {
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switch (*buf) {
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default:
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kip->putc(kip, *buf++);
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break;
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case FRAME_ESCAPE:
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case FRAME_END:
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kip->putc(kip, FRAME_ESCAPE);
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kip->putc(kip, *buf == FRAME_END ? TRANS_FRAME_END : TRANS_FRAME_ESCAPE);
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buf++;
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break;
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}
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}
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kip->putc(kip, FRAME_END);
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}
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void
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ipkdb_serial(kip)
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struct ipkdb_if *kip;
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{
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struct cfdata *cf = kip->cfp;
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kip->myenetaddr[0] = 1; /* make it a local address */
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kip->myenetaddr[1] = 0;
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kip->myenetaddr[2] = cf->cf_loc[1] >> 24;
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kip->myenetaddr[3] = cf->cf_loc[1] >> 16;
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kip->myenetaddr[4] = cf->cf_loc[1] >> 8;
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kip->myenetaddr[5] = cf->cf_loc[1];
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kip->flags |= IPKDB_MYHW;
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kip->mtu = 296;
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kip->receive = ipkdbrcv;
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kip->send = ipkdbsend;
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}
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