1 /* 2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 3 * 1997, 2000, 2011, 2012 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that: (1) source code distributions 8 * retain the above copyright notice and this paragraph in its entirety, (2) 9 * distributions including binary code include the above copyright notice and 10 * this paragraph in its entirety in the documentation or other materials 11 * provided with the distribution, and (3) all advertising materials mentioning 12 * features or use of this software display the following acknowledgement: 13 * ``This product includes software developed by the University of California, 14 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 15 * the University nor the names of its contributors may be used to endorse 16 * or promote products derived from this software without specific prior 17 * written permission. 18 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 19 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 20 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 21 */ 22 /* 23 * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved. 24 */ 25 26 /* \summary: IP-over-InfiniBand (IPoIB) printer */ 27 28 #ifdef HAVE_CONFIG_H 29 #include <config.h> 30 #endif 31 32 #include "netdissect-stdinc.h" 33 34 #include "netdissect.h" 35 #include "extract.h" 36 #include "addrtoname.h" 37 38 39 extern const struct tok ethertype_values[]; 40 41 #define IPOIB_HDRLEN 44 42 43 static inline void 44 ipoib_hdr_print(netdissect_options *ndo, const u_char *bp, u_int length) 45 { 46 uint16_t ether_type; 47 48 ether_type = GET_BE_U_2(bp + 40); 49 if (!ndo->ndo_qflag) { 50 ND_PRINT(", ethertype %s (0x%04x)", 51 tok2str(ethertype_values,"Unknown", ether_type), 52 ether_type); 53 } else { 54 ND_PRINT(", ethertype %s", 55 tok2str(ethertype_values,"Unknown", ether_type)); 56 } 57 58 ND_PRINT(", length %u: ", length); 59 } 60 61 /* 62 * Print an InfiniBand frame. 63 * This might be encapsulated within another frame; we might be passed 64 * a pointer to a function that can print header information for that 65 * frame's protocol, and an argument to pass to that function. 66 */ 67 static void 68 ipoib_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen, 69 void (*print_encap_header)(const u_char *), const u_char *encap_header_arg) 70 { 71 const u_char *orig_hdr = p; 72 u_int orig_length; 73 u_short ether_type; 74 75 if (caplen < IPOIB_HDRLEN) { 76 nd_print_trunc(ndo); 77 ndo->ndo_ll_hdr_len += caplen; 78 return; 79 } 80 81 if (length < IPOIB_HDRLEN) { 82 nd_print_trunc(ndo); 83 ndo->ndo_ll_hdr_len += length; 84 return; 85 } 86 87 if (ndo->ndo_eflag) { 88 nd_print_protocol_caps(ndo); 89 if (print_encap_header != NULL) 90 (*print_encap_header)(encap_header_arg); 91 ipoib_hdr_print(ndo, p, length); 92 } 93 orig_length = length; 94 95 ndo->ndo_ll_hdr_len += IPOIB_HDRLEN; 96 length -= IPOIB_HDRLEN; 97 caplen -= IPOIB_HDRLEN; 98 ether_type = GET_BE_U_2(p + 40); 99 p += IPOIB_HDRLEN; 100 101 if (ethertype_print(ndo, ether_type, p, length, caplen, NULL, NULL) == 0) { 102 /* ether_type not known, print raw packet */ 103 if (!ndo->ndo_eflag) { 104 if (print_encap_header != NULL) 105 (*print_encap_header)(encap_header_arg); 106 ipoib_hdr_print(ndo, orig_hdr , orig_length); 107 } 108 109 if (!ndo->ndo_suppress_default_print) 110 ND_DEFAULTPRINT(p, caplen); 111 } 112 } 113 114 /* 115 * This is the top level routine of the printer. 'p' points 116 * to the ether header of the packet, 'h->ts' is the timestamp, 117 * 'h->len' is the length of the packet off the wire, and 'h->caplen' 118 * is the number of bytes actually captured. 119 */ 120 void 121 ipoib_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) 122 { 123 ndo->ndo_protocol = "ipoib"; 124 ipoib_print(ndo, p, h->len, h->caplen, NULL, NULL); 125 } 126