diff options
Diffstat (limited to 'sys/boot/libsa/rarp.c')
| -rw-r--r-- | sys/boot/libsa/rarp.c | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/sys/boot/libsa/rarp.c b/sys/boot/libsa/rarp.c deleted file mode 100644 index b7e3ea486079..000000000000 --- a/sys/boot/libsa/rarp.c +++ /dev/null @@ -1,218 +0,0 @@ -/* $NetBSD: rarp.c,v 1.16 1997/07/07 15:52:52 drochner Exp $ */ - -/* - * Copyright (c) 1992 Regents of the University of California. - * All rights reserved. - * - * This software was developed by the Computer Systems Engineering group - * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and - * contributed to Berkeley. - * - * 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. 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. - * - * @(#) Header: arp.c,v 1.5 93/07/15 05:52:26 leres Exp (LBL) - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/socket.h> -#include <net/if.h> -#include <netinet/in.h> -#include <netinet/if_ether.h> - -#include <netinet/in_systm.h> - -#include <string.h> - -#include "stand.h" -#include "net.h" -#include "netif.h" - - -static ssize_t rarpsend(struct iodesc *, void *, size_t); -static ssize_t rarprecv(struct iodesc *, void **, void **, time_t); - -/* - * Ethernet (Reverse) Address Resolution Protocol (see RFC 903, and 826). - */ -int -rarp_getipaddress(int sock) -{ - struct iodesc *d; - struct ether_arp *ap; - void *pkt; - struct { - u_char header[ETHER_SIZE]; - struct { - struct ether_arp arp; - u_char pad[18]; /* 60 - sizeof(arp) */ - } data; - } wbuf; - -#ifdef RARP_DEBUG - if (debug) - printf("rarp: socket=%d\n", sock); -#endif - if (!(d = socktodesc(sock))) { - printf("rarp: bad socket. %d\n", sock); - return (-1); - } -#ifdef RARP_DEBUG - if (debug) - printf("rarp: d=%x\n", (u_int)d); -#endif - - bzero((char*)&wbuf.data, sizeof(wbuf.data)); - ap = &wbuf.data.arp; - ap->arp_hrd = htons(ARPHRD_ETHER); - ap->arp_pro = htons(ETHERTYPE_IP); - ap->arp_hln = sizeof(ap->arp_sha); /* hardware address length */ - ap->arp_pln = sizeof(ap->arp_spa); /* protocol address length */ - ap->arp_op = htons(ARPOP_REVREQUEST); - bcopy(d->myea, ap->arp_sha, 6); - bcopy(d->myea, ap->arp_tha, 6); - pkt = NULL; - - if (sendrecv(d, - rarpsend, &wbuf.data, sizeof(wbuf.data), - rarprecv, &pkt, (void *)&ap) < 0) { - printf("No response for RARP request\n"); - return (-1); - } - - bcopy(ap->arp_tpa, (char *)&myip, sizeof(myip)); -#if 0 - /* XXX - Can NOT assume this is our root server! */ - bcopy(ap->arp_spa, (char *)&rootip, sizeof(rootip)); -#endif - free(pkt); - - /* Compute our "natural" netmask. */ - if (IN_CLASSA(myip.s_addr)) - netmask = IN_CLASSA_NET; - else if (IN_CLASSB(myip.s_addr)) - netmask = IN_CLASSB_NET; - else - netmask = IN_CLASSC_NET; - - d->myip = myip; - return (0); -} - -/* - * Broadcast a RARP request (i.e. who knows who I am) - */ -static ssize_t -rarpsend(struct iodesc *d, void *pkt, size_t len) -{ - -#ifdef RARP_DEBUG - if (debug) - printf("rarpsend: called\n"); -#endif - - return (sendether(d, pkt, len, bcea, ETHERTYPE_REVARP)); -} - -/* - * Returns 0 if this is the packet we're waiting for - * else -1 (and errno == 0) - */ -static ssize_t -rarprecv(struct iodesc *d, void **pkt, void **payload, time_t tleft) -{ - ssize_t n; - struct ether_arp *ap; - void *ptr = NULL; - uint16_t etype; /* host order */ - -#ifdef RARP_DEBUG - if (debug) - printf("rarprecv: "); -#endif - - n = readether(d, &ptr, (void **)&ap, tleft, &etype); - errno = 0; /* XXX */ - if (n == -1 || n < sizeof(struct ether_arp)) { -#ifdef RARP_DEBUG - if (debug) - printf("bad len=%d\n", n); -#endif - free(ptr); - return (-1); - } - - if (etype != ETHERTYPE_REVARP) { -#ifdef RARP_DEBUG - if (debug) - printf("bad type=0x%x\n", etype); -#endif - free(ptr); - return (-1); - } - - if (ap->arp_hrd != htons(ARPHRD_ETHER) || - ap->arp_pro != htons(ETHERTYPE_IP) || - ap->arp_hln != sizeof(ap->arp_sha) || - ap->arp_pln != sizeof(ap->arp_spa) ) - { -#ifdef RARP_DEBUG - if (debug) - printf("bad hrd/pro/hln/pln\n"); -#endif - free(ptr); - return (-1); - } - - if (ap->arp_op != htons(ARPOP_REVREPLY)) { -#ifdef RARP_DEBUG - if (debug) - printf("bad op=0x%x\n", ntohs(ap->arp_op)); -#endif - free(ptr); - return (-1); - } - - /* Is the reply for our Ethernet address? */ - if (bcmp(ap->arp_tha, d->myea, 6)) { -#ifdef RARP_DEBUG - if (debug) - printf("unwanted address\n"); -#endif - free(ptr); - return (-1); - } - - /* We have our answer. */ -#ifdef RARP_DEBUG - if (debug) - printf("got it\n"); -#endif - *pkt = ptr; - *payload = ap; - return (n); -} |