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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 17:13:01 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 17:13:01 +0000 |
commit | 7adcb5b605cc1328a3084c334f4697ec9771936c (patch) | |
tree | 03e681bfda053978ba896745828e09cb056ad156 /print-sunatm.c | |
parent | Initial commit. (diff) | |
download | tcpdump-7adcb5b605cc1328a3084c334f4697ec9771936c.tar.xz tcpdump-7adcb5b605cc1328a3084c334f4697ec9771936c.zip |
Adding upstream version 4.99.4.upstream/4.99.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'print-sunatm.c')
-rw-r--r-- | print-sunatm.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/print-sunatm.c b/print-sunatm.c new file mode 100644 index 0000000..0fe5eee --- /dev/null +++ b/print-sunatm.c @@ -0,0 +1,102 @@ +/* + * Copyright (c) 1997 Yen Yen Lim and North Dakota State University + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Yen Yen Lim and + North Dakota State University + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* \summary: SunATM DLPI capture printer */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include "netdissect-stdinc.h" + +#define ND_LONGJMP_FROM_TCHECK +#include "netdissect.h" +#include "extract.h" + +#include "atm.h" + +/* SunATM header for ATM packet */ +#define DIR_POS 0 /* Direction (0x80 = transmit, 0x00 = receive) */ +#define VPI_POS 1 /* VPI */ +#define VCI_POS 2 /* VCI */ +#define PKT_BEGIN_POS 4 /* Start of the ATM packet */ + +/* Protocol type values in the bottom for bits of the byte at SUNATM_DIR_POS. */ +#define PT_LANE 0x01 /* LANE */ +#define PT_LLC 0x02 /* LLC encapsulation */ + +/* + * This is the top level routine of the printer. 'p' points + * to the SunATM pseudo-header for the packet, 'h->ts' is the timestamp, + * 'h->len' is the length of the packet off the wire, and 'h->caplen' + * is the number of bytes actually captured. + */ +void +sunatm_if_print(netdissect_options *ndo, + const struct pcap_pkthdr *h, const u_char *p) +{ + u_int caplen = h->caplen; + u_int length = h->len; + u_short vci; + u_char vpi; + u_int traftype; + + ndo->ndo_protocol = "sunatm"; + + if (ndo->ndo_eflag) { + ND_PRINT(GET_U_1(p + DIR_POS) & 0x80 ? "Tx: " : "Rx: "); + } + + switch (GET_U_1(p + DIR_POS) & 0x0f) { + + case PT_LANE: + traftype = ATM_LANE; + break; + + case PT_LLC: + traftype = ATM_LLC; + break; + + default: + traftype = ATM_UNKNOWN; + break; + } + + vpi = GET_U_1(p + VPI_POS); + vci = GET_BE_U_2(p + VCI_POS); + + p += PKT_BEGIN_POS; + caplen -= PKT_BEGIN_POS; + length -= PKT_BEGIN_POS; + ndo->ndo_ll_hdr_len += PKT_BEGIN_POS; + atm_print(ndo, vpi, vci, traftype, p, length, caplen); +} |