1 /* 2 * Copyright (c) 1992 Regents of the University of California. 3 * All rights reserved. 4 * 5 * This software was developed by the Computer Systems Engineering group 6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 7 * contributed to Berkeley. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Lawrence Berkeley Laboratory and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from @(#) Header: net.c,v 1.9 93/08/06 19:32:15 leres Exp (LBL) 38 */ 39 40 #include <sys/param.h> 41 #include <sys/socket.h> 42 #include <string.h> 43 44 #include <net/if.h> 45 46 #include <netinet/in.h> 47 #include <netinet/if_ether.h> 48 #include <netinet/in_systm.h> 49 #include <netinet/ip.h> 50 51 #include "stand.h" 52 #include "net.h" 53 #include "netif.h" 54 55 const u_char bcea[6] = { 56 0xff, 0xff, 0xff, 0xff, 0xff, 0xff 57 }; 58 59 /* Caller must leave room for ethernet header in front!! */ 60 int 61 sendether(d, buf, len, dea, etype) 62 struct iodesc *d; 63 void *buf; 64 int len; 65 u_char *dea; 66 int etype; 67 { 68 register struct ether_header *eh; 69 70 #ifdef ETHER_DEBUG 71 if (debug) 72 printf("sendether: called\n"); 73 #endif 74 eh = ((struct ether_header *)buf) - 1; 75 len += ETHER_SIZE; 76 77 MACPY(d->myea, eh->ether_shost); /* by byte */ 78 MACPY(dea, eh->ether_dhost); /* by byte */ 79 eh->ether_type = htons(etype); 80 return (netif_put(d, eh, len) - ETHER_SIZE); 81 } 82 83 /* 84 * Convert Ethernet address to printable (loggable) representation. 85 */ 86 static char digits[] = "0123456789abcdef"; 87 char * 88 ether_sprintf(ap) 89 register u_char *ap; 90 { 91 register i; 92 static char etherbuf[18]; 93 register char *cp = etherbuf; 94 95 for (i = 0; i < 6; i++) { 96 *cp++ = digits[*ap >> 4]; 97 *cp++ = digits[*ap++ & 0xf]; 98 *cp++ = ':'; 99 } 100 *--cp = 0; 101 return (etherbuf); 102 } 103