| stevel@tonic-gate | 7c478bd | 2005-06-14 00:00:00 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2005 Sun Microsystems, Inc. All rights reserved. |
| 3 | * Use is subject to license terms. |
| 4 | */ |
| 5 | |
| 6 | /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ |
| 7 | /* All Rights Reserved */ |
| 8 | |
| 9 | /* |
| 10 | * Copyright (c) 1982, 1986 Regents of the University of California. |
| 11 | * All rights reserved. |
| 12 | * |
| 13 | * Redistribution and use in source and binary forms are permitted |
| 14 | * provided that this notice is preserved and that due credit is given |
| 15 | * to the University of California at Berkeley. The name of the University |
| 16 | * may not be used to endorse or promote products derived from this |
| 17 | * software without specific prior written permission. This software |
| 18 | * is provided ``as is'' without express or implied warranty. |
| 19 | */ |
| 20 | |
| 21 | #pragma ident "%Z%%M% %I% %E% SMI" |
| 22 | |
| 23 | #include <sys/types.h> |
| 24 | #include <sys/sysmacros.h> |
| 25 | #include <sys/ethernet.h> |
| 26 | #include <sys/cmn_err.h> |
| 27 | #include <sys/ksynch.h> |
| 28 | |
| 29 | /* |
| 30 | * Store and retrieve local individual ethernet address. |
| 31 | * This is typically initialized (called with 'hint' nonnull) |
| 32 | * by the boot code. |
| 33 | */ |
| 34 | |
| 35 | static kmutex_t localetheraddr_lock; /* Perimeter lock for localetheraddr */ |
| 36 | |
| 37 | int |
| 38 | localetheraddr(struct ether_addr *hint, struct ether_addr *result) |
| 39 | { |
| 40 | static int found = 0; |
| 41 | static struct ether_addr addr; |
| 42 | |
| 43 | mutex_enter(&localetheraddr_lock); |
| 44 | if (!found) { |
| 45 | if (hint == NULL) { |
| 46 | mutex_exit(&localetheraddr_lock); |
| 47 | return (0); |
| 48 | } |
| 49 | found = 1; |
| 50 | addr = *hint; |
| 51 | cmn_err(CE_CONT, "?Ethernet address = %s\n", |
| 52 | ether_sprintf(&addr)); |
| 53 | } |
| 54 | if (result != NULL) |
| 55 | *result = addr; |
| 56 | mutex_exit(&localetheraddr_lock); |
| 57 | return (1); |
| 58 | } |
| 59 | |
| 60 | /* |
| 61 | * Convert Ethernet address to printable (loggable) representation. |
| 62 | * |
| 63 | * XXX This is not MT-safe, but its only race is for the "etherbuf". |
| 64 | */ |
| 65 | char * |
| 66 | ether_sprintf(struct ether_addr *addr) |
| 67 | { |
| 68 | static char etherbuf[18]; |
| 69 | |
| 70 | (void) snprintf(etherbuf, sizeof (etherbuf), "%x:%x:%x:%x:%x:%x", |
| 71 | addr->ether_addr_octet[0], addr->ether_addr_octet[1], |
| 72 | addr->ether_addr_octet[2], addr->ether_addr_octet[3], |
| 73 | addr->ether_addr_octet[4], addr->ether_addr_octet[5]); |
| 74 | return (etherbuf); |
| 75 | } |
| 76 | |
| 77 | static int |
| 78 | hexval(char dig) |
| 79 | { |
| 80 | if ('0' <= dig && dig <= '9') { |
| 81 | return (dig - '0'); |
| 82 | } else if ('a' <= dig && dig <= 'f') { |
| 83 | return (dig - 'a' + 10); |
| 84 | } else if ('A' <= dig && dig <= 'F') { |
| 85 | return (dig - 'A' + 10); |
| 86 | } else { |
| 87 | return (-1); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | /* |
| 92 | * Convert Ethernet address from ascii to binary form. |
| 93 | * Return number of bytes written. |
| 94 | */ |
| 95 | int |
| 96 | ether_aton(char *addr, uchar_t *macaddr) |
| 97 | { |
| 98 | int i = 0; |
| 99 | uint_t val = 0; |
| 100 | char *cp = addr; |
| 101 | |
| 102 | while (*cp != 0 && i < 6) { |
| 103 | if (*cp == ':') { |
| 104 | macaddr[i++] = val; |
| 105 | val = 0; |
| 106 | cp++; |
| 107 | continue; |
| 108 | } |
| 109 | |
| 110 | val = (val << 4) | hexval(*cp++); |
| 111 | } |
| 112 | macaddr[i] = val; |
| 113 | return (i + 1); |
| 114 | } |