1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <sys/types.h> 28 #include <sys/dlpi.h> 29 #include <net/if.h> 30 #include <net/dlt.h> 31 32 /* 33 * This table provides a mapping of the DLPI data link types used in 34 * Solaris to the BPF data link types. Providing this translation in 35 * the kernel allows libpcap to be downloaded and used without any 36 * need for change. 37 * 38 * Note that this table is not necessarily sorted. 39 */ 40 static uint_t dl_to_dlt[][3] = { 41 { DL_CSMACD, DLT_EN10MB, 14 }, /* IEEE 802.3 CSMA/CD */ 42 { DL_TPB, DLT_NULL, 0 }, /* IEEE 802.4 Token Bus */ 43 { DL_TPR, DLT_IEEE802, 0 }, /* IEEE 802.5 Token Ring */ 44 { DL_METRO, DLT_NULL, 0 }, /* IEEE 802.6 Metro Net */ 45 { DL_ETHER, DLT_EN10MB, 14 }, /* Ethernet Bus */ 46 { DL_HDLC, DLT_C_HDLC, 0 }, /* Cisco HDLC protocol */ 47 { DL_CHAR, DLT_NULL, 0 }, /* Character Synchr. proto */ 48 { DL_CTCA, DLT_NULL, 0 }, /* IBM Channel-to-Channel */ 49 { DL_FDDI, DLT_FDDI, 24 }, /* Fiber Distributed data */ 50 { DL_FC, DLT_NULL, 0 }, /* Fibre Channel interface */ 51 { DL_ATM, DLT_SUNATM, 0 }, /* ATM */ 52 { DL_IPATM, DLT_ATM_CLIP, 0 }, /* ATM CLIP */ 53 { DL_X25, DLT_NULL, 0 }, /* X.25 LAPB interface */ 54 { DL_ISDN, DLT_NULL, 0 }, /* ISDN interface */ 55 { DL_HIPPI, DLT_HIPPI, 0 }, /* HIPPI interface */ 56 { DL_100VG, DLT_EN10MB, 14 }, /* 100 Based VG Ethernet */ 57 { DL_100VGTPR, DLT_IEEE802, 0 }, /* 100 Based VG Token Ring */ 58 { DL_ETH_CSMA, DLT_EN10MB, 14 }, /* ISO 8802/3 and Ethernet */ 59 { DL_100BT, DLT_EN10MB, 14 }, /* 100 Base T */ 60 { DL_IB, DLT_IPOIB, 44 }, /* Solaris IPoIB (infini.) */ 61 { DL_FRAME, DLT_FRELAY, 0 }, /* Frame Relay LAPF */ 62 { DL_MPFRAME, DLT_NULL, 0 }, /* Multi-protocol Frame Relay */ 63 { DL_ASYNC, DLT_NULL, 0 }, /* Character Asynch. Protocol */ 64 { DL_IPX25, DLT_NULL, 0 }, /* X.25 Classical IP */ 65 { DL_LOOP, DLT_NULL, 0 }, /* software loopback */ 66 { DL_IPV4, DLT_RAW, 0 }, /* IPv4 Tunnel Link */ 67 { DL_IPV6, DLT_RAW, 0 }, /* IPv6 Tunnel Link */ 68 { SUNW_DL_VNI, DLT_NULL, 0 }, /* Virtual network interface */ 69 { DL_WIFI, DLT_IEEE802_11, 0 }, /* IEEE 802.11 */ 70 { DL_IPNET, DLT_IPNET, 24 }, /* Solaris IP Observability */ 71 { DL_OTHER, DLT_NULL, 0 }, /* Mediums not listed above */ 72 { 0, 0 } 73 }; 74 75 /* 76 * Given a data link type number used with DLPI on Solaris, return 77 * the equivalent data link type number for use with BPF. 78 */ 79 int 80 bpf_dl_to_dlt(int dl) 81 { 82 int i; 83 84 for (i = 0; i < sizeof (dl_to_dlt) / sizeof (dl_to_dlt[0]); i++) 85 if (dl_to_dlt[i][0] == dl) 86 return (dl_to_dlt[i][1]); 87 return (0); 88 } 89 90 /* 91 * Given a DLPI data link type for Solaris, return the expected header 92 * size of the link layer. 93 */ 94 int 95 bpf_dl_hdrsize(int dl) 96 { 97 int i; 98 99 for (i = 0; i < sizeof (dl_to_dlt) / sizeof (dl_to_dlt[0]); i++) 100 if (dl_to_dlt[i][0] == dl) 101 return (dl_to_dlt[i][2]); 102 return (0); 103 } 104