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 #include <config.h> 29 30 #include "netdissect-stdinc.h" 31 32 #include "netdissect.h" 33 #include "extract.h" 34 #include "addrtoname.h" 35 36 37 extern const struct tok ethertype_values[]; 38 39 #define IPOIB_HDRLEN 44 40 41 static inline void 42 ipoib_hdr_print(netdissect_options *ndo, const u_char *bp, u_int length) 43 { 44 uint16_t ether_type; 45 46 ether_type = GET_BE_U_2(bp + 40); 47 if (!ndo->ndo_qflag) { 48 ND_PRINT(", ethertype %s (0x%04x)", 49 tok2str(ethertype_values,"Unknown", ether_type), 50 ether_type); 51 } else { 52 ND_PRINT(", ethertype %s", 53 tok2str(ethertype_values,"Unknown", ether_type)); 54 } 55 56 ND_PRINT(", length %u: ", length); 57 } 58 59 /* 60 * Print an InfiniBand frame. 61 * This might be encapsulated within another frame; we might be passed 62 * a pointer to a function that can print header information for that 63 * frame's protocol, and an argument to pass to that function. 64 */ 65 static void 66 ipoib_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen, 67 void (*print_encap_header)(const u_char *), const u_char *encap_header_arg) 68 { 69 const u_char *orig_hdr = p; 70 u_int orig_length; 71 u_short ether_type; 72 73 if (caplen < IPOIB_HDRLEN) { 74 nd_print_trunc(ndo); 75 ndo->ndo_ll_hdr_len += caplen; 76 return; 77 } 78 79 if (length < IPOIB_HDRLEN) { 80 nd_print_trunc(ndo); 81 ndo->ndo_ll_hdr_len += length; 82 return; 83 } 84 85 if (ndo->ndo_eflag) { 86 nd_print_protocol_caps(ndo); 87 if (print_encap_header != NULL) 88 (*print_encap_header)(encap_header_arg); 89 ipoib_hdr_print(ndo, p, length); 90 } 91 orig_length = length; 92 93 ndo->ndo_ll_hdr_len += IPOIB_HDRLEN; 94 length -= IPOIB_HDRLEN; 95 caplen -= IPOIB_HDRLEN; 96 ether_type = GET_BE_U_2(p + 40); 97 p += IPOIB_HDRLEN; 98 99 if (ethertype_print(ndo, ether_type, p, length, caplen, NULL, NULL) == 0) { 100 /* ether_type not known, print raw packet */ 101 if (!ndo->ndo_eflag) { 102 if (print_encap_header != NULL) 103 (*print_encap_header)(encap_header_arg); 104 ipoib_hdr_print(ndo, orig_hdr , orig_length); 105 } 106 107 if (!ndo->ndo_suppress_default_print) 108 ND_DEFAULTPRINT(p, caplen); 109 } 110 } 111 112 /* 113 * This is the top level routine of the printer. 'p' points 114 * to the ether header of the packet, 'h->ts' is the timestamp, 115 * 'h->len' is the length of the packet off the wire, and 'h->caplen' 116 * is the number of bytes actually captured. 117 */ 118 void 119 ipoib_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) 120 { 121 ndo->ndo_protocol = "ipoib"; 122 ipoib_print(ndo, p, h->len, h->caplen, NULL, NULL); 123 } 124