1 /*- 2 * Copyright (c) 2011 NetApp, Inc. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 18 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 19 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 20 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 21 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 22 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 23 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 * $FreeBSD$ 26 */ 27 28 #include "net_utils.h" 29 #include "bhyverun.h" 30 #include <md5.h> 31 #include <net/ethernet.h> 32 #include <string.h> 33 #include <stdio.h> 34 #include <errno.h> 35 36 int 37 net_parsemac(char *mac_str, uint8_t *mac_addr) 38 { 39 struct ether_addr *ea; 40 char *tmpstr; 41 char zero_addr[ETHER_ADDR_LEN] = { 0, 0, 0, 0, 0, 0 }; 42 43 tmpstr = strsep(&mac_str,"="); 44 45 if ((mac_str != NULL) && (!strcmp(tmpstr,"mac"))) { 46 ea = ether_aton(mac_str); 47 48 if (ea == NULL || ETHER_IS_MULTICAST(ea->octet) || 49 memcmp(ea->octet, zero_addr, ETHER_ADDR_LEN) == 0) { 50 fprintf(stderr, "Invalid MAC %s\n", mac_str); 51 return (EINVAL); 52 } else 53 memcpy(mac_addr, ea->octet, ETHER_ADDR_LEN); 54 } 55 56 return (0); 57 } 58 59 void 60 net_genmac(struct pci_devinst *pi, uint8_t *macaddr) 61 { 62 /* 63 * The default MAC address is the standard NetApp OUI of 00-a0-98, 64 * followed by an MD5 of the PCI slot/func number and dev name 65 */ 66 MD5_CTX mdctx; 67 unsigned char digest[16]; 68 char nstr[80]; 69 70 snprintf(nstr, sizeof(nstr), "%d-%d-%s", pi->pi_slot, 71 pi->pi_func, vmname); 72 73 MD5Init(&mdctx); 74 MD5Update(&mdctx, nstr, (unsigned int)strlen(nstr)); 75 MD5Final(digest, &mdctx); 76 77 macaddr[0] = 0x00; 78 macaddr[1] = 0xa0; 79 macaddr[2] = 0x98; 80 macaddr[3] = digest[0]; 81 macaddr[4] = digest[1]; 82 macaddr[5] = digest[2]; 83 } 84