mirror of
https://github.com/the-tcpdump-group/tcpdump.git
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122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/*
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* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
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* 1997, 2000, 2011, 2012
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/*
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* Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved.
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*/
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/* \summary: IP-over-InfiniBand (IPoIB) printer */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <netdissect-stdinc.h>
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#include <stdio.h>
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#include "netdissect.h"
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#include "extract.h"
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#include "addrtoname.h"
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extern const struct tok ethertype_values[];
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#define IPOIB_HDRLEN 44
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static inline void
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ipoib_hdr_print(netdissect_options *ndo, const u_char *bp, u_int length)
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{
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uint16_t ether_type;
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ether_type = GET_BE_U_2(bp + 40);
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if (!ndo->ndo_qflag) {
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ND_PRINT(", ethertype %s (0x%04x)",
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tok2str(ethertype_values,"Unknown", ether_type),
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ether_type);
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} else {
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ND_PRINT(", ethertype %s",
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tok2str(ethertype_values,"Unknown", ether_type));
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}
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ND_PRINT(", length %u: ", length);
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}
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/*
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* Print an InfiniBand frame.
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* This might be encapsulated within another frame; we might be passed
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* a pointer to a function that can print header information for that
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* frame's protocol, and an argument to pass to that function.
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*/
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static void
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ipoib_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen,
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void (*print_encap_header)(const u_char *), const u_char *encap_header_arg)
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{
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const u_char *orig_hdr = p;
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u_int orig_length;
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u_short ether_type;
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if (caplen < IPOIB_HDRLEN || length < IPOIB_HDRLEN) {
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nd_print_trunc(ndo);
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return;
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}
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if (ndo->ndo_eflag) {
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nd_print_protocol_caps(ndo);
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if (print_encap_header != NULL)
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(*print_encap_header)(encap_header_arg);
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ipoib_hdr_print(ndo, p, length);
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}
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orig_length = length;
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length -= IPOIB_HDRLEN;
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caplen -= IPOIB_HDRLEN;
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ether_type = GET_BE_U_2(p + 40);
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p += IPOIB_HDRLEN;
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if (ethertype_print(ndo, ether_type, p, length, caplen, NULL, NULL) == 0) {
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/* ether_type not known, print raw packet */
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if (!ndo->ndo_eflag) {
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if (print_encap_header != NULL)
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(*print_encap_header)(encap_header_arg);
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ipoib_hdr_print(ndo, orig_hdr , orig_length);
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}
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if (!ndo->ndo_suppress_default_print)
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ND_DEFAULTPRINT(p, caplen);
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}
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}
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/*
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* This is the top level routine of the printer. 'p' points
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* to the ether header of the packet, 'h->ts' is the timestamp,
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* 'h->len' is the length of the packet off the wire, and 'h->caplen'
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* is the number of bytes actually captured.
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*/
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u_int
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ipoib_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
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{
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ndo->ndo_protocol = "ipoib";
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ipoib_print(ndo, p, h->len, h->caplen, NULL, NULL);
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return (IPOIB_HDRLEN);
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}
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