mirror of
https://github.com/the-tcpdump-group/tcpdump.git
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b5cbb4d2bb
This trivial change compiles fine with GCC 7.5.0 on Linux and Clang 10.0.1 on FreeBSD, so let's not run the full round of CI this time.
126 lines
3.8 KiB
C
126 lines
3.8 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 "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) {
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nd_print_trunc(ndo);
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ndo->ndo_ll_hdr_len += caplen;
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return;
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}
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if (length < IPOIB_HDRLEN) {
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nd_print_trunc(ndo);
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ndo->ndo_ll_hdr_len += length;
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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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ndo->ndo_ll_hdr_len += IPOIB_HDRLEN;
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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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void
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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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}
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