dl_print.c revision 1.2.2.3
1 1.2.2.3 skrll /* $NetBSD: dl_print.c,v 1.2.2.3 2016/04/22 15:44:17 skrll Exp $ */ 2 1.2.2.2 skrll 3 1.2.2.2 skrll /*- 4 1.2.2.2 skrll * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 1.2.2.2 skrll * All rights reserved. 6 1.2.2.2 skrll * 7 1.2.2.2 skrll * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 skrll * modification, are permitted provided that the following conditions 9 1.2.2.2 skrll * are met: 10 1.2.2.2 skrll * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 skrll * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 skrll * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 skrll * documentation and/or other materials provided with the distribution. 15 1.2.2.2 skrll * 16 1.2.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 1.2.2.2 skrll * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 1.2.2.2 skrll * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 1.2.2.2 skrll * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 1.2.2.2 skrll * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.2.2.2 skrll * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.2.2.2 skrll * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.2.2.2 skrll * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.2.2.2 skrll * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.2.2.2 skrll * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.2.2.2 skrll * POSSIBILITY OF SUCH DAMAGE. 27 1.2.2.2 skrll */ 28 1.2.2.2 skrll #include <sys/cdefs.h> 29 1.2.2.2 skrll #include <sys/types.h> 30 1.2.2.2 skrll 31 1.2.2.2 skrll #ifdef _KERNEL 32 1.2.2.3 skrll __KERNEL_RCSID(0, "$NetBSD: dl_print.c,v 1.2.2.3 2016/04/22 15:44:17 skrll Exp $"); 33 1.2.2.2 skrll #include <sys/systm.h> 34 1.2.2.2 skrll #else 35 1.2.2.3 skrll __RCSID("$NetBSD: dl_print.c,v 1.2.2.3 2016/04/22 15:44:17 skrll Exp $"); 36 1.2.2.2 skrll #include <stdio.h> 37 1.2.2.2 skrll static const uint8_t hexdigits[] = "0123456789abcdef"; 38 1.2.2.2 skrll #endif 39 1.2.2.2 skrll #include <net/if_dl.h> 40 1.2.2.2 skrll 41 1.2.2.2 skrll int 42 1.2.2.2 skrll dl_print(char *buf, size_t len, const struct dl_addr *dl) 43 1.2.2.2 skrll { 44 1.2.2.2 skrll const uint8_t *ap = (const uint8_t *)dl->dl_data; 45 1.2.2.2 skrll char abuf[256 * 3], *cp, *ecp; 46 1.2.2.2 skrll 47 1.2.2.2 skrll ap += dl->dl_nlen; 48 1.2.2.2 skrll cp = abuf; 49 1.2.2.2 skrll ecp = abuf + sizeof(abuf); 50 1.2.2.2 skrll 51 1.2.2.2 skrll #define ADDC(c) do { \ 52 1.2.2.2 skrll if (cp >= ecp) {\ 53 1.2.2.2 skrll cp++; \ 54 1.2.2.2 skrll } else \ 55 1.2.2.2 skrll *cp++ = (char)(c); \ 56 1.2.2.2 skrll } while (/*CONSTCOND*/0) 57 1.2.2.2 skrll 58 1.2.2.2 skrll #define ADDX(v) do { \ 59 1.2.2.2 skrll uint8_t n = hexdigits[(v)]; \ 60 1.2.2.2 skrll ADDC(n); \ 61 1.2.2.2 skrll } while (/*CONSTCOND*/0) 62 1.2.2.2 skrll 63 1.2.2.2 skrll for (size_t i = 0; i < dl->dl_alen; i++) { 64 1.2.2.2 skrll ADDX((u_int)ap[i] >> 4); 65 1.2.2.2 skrll ADDX(ap[i] & 0xf); 66 1.2.2.2 skrll ADDC(':'); 67 1.2.2.2 skrll } 68 1.2.2.2 skrll if (cp > abuf) 69 1.2.2.2 skrll --cp; 70 1.2.2.2 skrll if (ecp > abuf) { 71 1.2.2.2 skrll if (cp < ecp) 72 1.2.2.2 skrll *cp = '\0'; 73 1.2.2.2 skrll else 74 1.2.2.2 skrll *--ecp = '\0'; 75 1.2.2.2 skrll } 76 1.2.2.2 skrll return snprintf(buf, len, "%.*s/%hhu#%s", 77 1.2.2.2 skrll (int)dl->dl_nlen, dl->dl_data, dl->dl_type, abuf); 78 1.2.2.2 skrll } 79 1.2.2.2 skrll 80 1.2.2.2 skrll int 81 1.2.2.2 skrll sdl_print(char *buf, size_t len, const void *v) 82 1.2.2.2 skrll { 83 1.2.2.2 skrll const struct sockaddr_dl *sdl = v; 84 1.2.2.2 skrll char abuf[LINK_ADDRSTRLEN]; 85 1.2.2.2 skrll 86 1.2.2.3 skrll if (sdl->sdl_slen == 0 && sdl->sdl_nlen == 0 && sdl->sdl_alen == 0) 87 1.2.2.3 skrll return snprintf(buf, len, "link#%hu", sdl->sdl_index); 88 1.2.2.3 skrll 89 1.2.2.2 skrll dl_print(abuf, sizeof(abuf), &sdl->sdl_addr); 90 1.2.2.2 skrll return snprintf(buf, len, "[%s]:%hu", abuf, sdl->sdl_index); 91 1.2.2.2 skrll } 92
Indexes created Thu Oct 02 14:10:14 GMT 2025