* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
-#define NETDISSECT_REWORKED
+/* \summary: Asynchronous Transfer Mode (ATM) printer */
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include <tcpdump-stdinc.h>
+#include <netdissect-stdinc.h>
-#include "interface.h"
+#include "netdissect.h"
#include "extract.h"
#include "addrtoname.h"
#include "atm.h"
-#include "atmuni31.h"
#include "llc.h"
+/* start of the original atmuni31.h */
+
+/*
+ * 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.
+ */
+
+/* Based on UNI3.1 standard by ATM Forum */
+
+/* ATM traffic types based on VPI=0 and (the following VCI */
+#define VCI_PPC 0x05 /* Point-to-point signal msg */
+#define VCI_BCC 0x02 /* Broadcast signal msg */
+#define VCI_OAMF4SC 0x03 /* Segment OAM F4 flow cell */
+#define VCI_OAMF4EC 0x04 /* End-to-end OAM F4 flow cell */
+#define VCI_METAC 0x01 /* Meta signal msg */
+#define VCI_ILMIC 0x10 /* ILMI msg */
+
+/* Q.2931 signalling messages */
+#define CALL_PROCEED 0x02 /* call proceeding */
+#define CONNECT 0x07 /* connect */
+#define CONNECT_ACK 0x0f /* connect_ack */
+#define SETUP 0x05 /* setup */
+#define RELEASE 0x4d /* release */
+#define RELEASE_DONE 0x5a /* release_done */
+#define RESTART 0x46 /* restart */
+#define RESTART_ACK 0x4e /* restart ack */
+#define STATUS 0x7d /* status */
+#define STATUS_ENQ 0x75 /* status ack */
+#define ADD_PARTY 0x80 /* add party */
+#define ADD_PARTY_ACK 0x81 /* add party ack */
+#define ADD_PARTY_REJ 0x82 /* add party rej */
+#define DROP_PARTY 0x83 /* drop party */
+#define DROP_PARTY_ACK 0x84 /* drop party ack */
+
+/* Information Element Parameters in the signalling messages */
+#define CAUSE 0x08 /* cause */
+#define ENDPT_REF 0x54 /* endpoint reference */
+#define AAL_PARA 0x58 /* ATM adaptation layer parameters */
+#define TRAFF_DESCRIP 0x59 /* atm traffic descriptors */
+#define CONNECT_ID 0x5a /* connection identifier */
+#define QOS_PARA 0x5c /* quality of service parameters */
+#define B_HIGHER 0x5d /* broadband higher layer information */
+#define B_BEARER 0x5e /* broadband bearer capability */
+#define B_LOWER 0x5f /* broadband lower information */
+#define CALLING_PARTY 0x6c /* calling party number */
+#define CALLED_PARTY 0x70 /* called party nmber */
+
+#define Q2931 0x09
+
+/* Q.2931 signalling general messages format */
+#define PROTO_POS 0 /* offset of protocol discriminator */
+#define CALL_REF_POS 2 /* offset of call reference value */
+#define MSG_TYPE_POS 5 /* offset of message type */
+#define MSG_LEN_POS 7 /* offset of mesage length */
+#define IE_BEGIN_POS 9 /* offset of first information element */
+
+/* format of signalling messages */
+#define TYPE_POS 0
+#define LEN_POS 2
+#define FIELD_BEGIN_POS 4
+
+/* end of the original atmuni31.h */
+
static const char tstr[] = "[|atm]";
#define OAM_CRC10_MASK 0x3ff
/*
* Print an RFC 1483 LLC-encapsulated ATM frame.
*/
-static void
+static u_int
atm_llc_print(netdissect_options *ndo,
const u_char *p, int length, int caplen)
{
- u_short extracted_ethertype;
-
- if (!llc_print(ndo, p, length, caplen, NULL, NULL,
- &extracted_ethertype)) {
- /* ether_type not known, print raw packet */
- if (extracted_ethertype) {
- ND_PRINT((ndo, "(LLC %s) ",
- etherproto_string(htons(extracted_ethertype))));
- }
+ int llc_hdrlen;
+
+ llc_hdrlen = llc_print(ndo, p, length, caplen, NULL, NULL);
+ if (llc_hdrlen < 0) {
+ /* packet not known, print raw packet */
if (!ndo->ndo_suppress_default_print)
ND_DEFAULTPRINT(p, caplen);
+ llc_hdrlen = -llc_hdrlen;
}
+ return (llc_hdrlen);
}
/*
}
/* Cisco Style NLPID ? */
- if (*p == LLC_UI) {
+ if (EXTRACT_U_1(p) == LLC_UI) {
if (ndo->ndo_eflag)
ND_PRINT((ndo, "CNLPID "));
- isoclns_print(ndo, p + 1, length - 1, caplen - 1);
+ isoclns_print(ndo, p + 1, length - 1);
return hdrlen;
}
* packet nor an RFC 2684 routed NLPID-formatted PDU nor
* an 802.2-but-no-SNAP IP packet.
*/
- llchdr = EXTRACT_24BITS(p);
+ llchdr = EXTRACT_BE_U_3(p);
if (llchdr != LLC_UI_HDR(LLCSAP_SNAP) &&
llchdr != LLC_UI_HDR(LLCSAP_ISONS) &&
llchdr != LLC_UI_HDR(LLCSAP_IP)) {
}
if (ndo->ndo_eflag)
ND_PRINT((ndo, "%08x%08x %08x%08x ",
- EXTRACT_32BITS(p),
- EXTRACT_32BITS(p+4),
- EXTRACT_32BITS(p+8),
- EXTRACT_32BITS(p+12)));
+ EXTRACT_BE_U_4(p),
+ EXTRACT_BE_U_4(p + 4),
+ EXTRACT_BE_U_4(p + 8),
+ EXTRACT_BE_U_4(p + 12)));
p += 20;
length -= 20;
caplen -= 20;
hdrlen += 20;
}
- atm_llc_print(ndo, p, length, caplen);
+ hdrlen += atm_llc_print(ndo, p, length, caplen);
return (hdrlen);
}
static void
sig_print(netdissect_options *ndo,
- const u_char *p, int caplen)
+ const u_char *p)
{
uint32_t call_ref;
- if (caplen < PROTO_POS) {
- ND_PRINT((ndo, "%s", tstr));
- return;
- }
- if (p[PROTO_POS] == Q2931) {
+ ND_TCHECK_1(p + PROTO_POS);
+ if (EXTRACT_U_1(p + PROTO_POS) == Q2931) {
/*
* protocol:Q.2931 for User to Network Interface
* (UNI 3.1) signalling
*/
ND_PRINT((ndo, "Q.2931"));
- if (caplen < MSG_TYPE_POS) {
- ND_PRINT((ndo, " %s", tstr));
- return;
- }
+ ND_TCHECK_1(p + MSG_TYPE_POS);
ND_PRINT((ndo, ":%s ",
- tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS])));
+ tok2str(msgtype2str, "msgtype#%d", EXTRACT_U_1(p + MSG_TYPE_POS))));
/*
* The call reference comes before the message type,
* do from the caplen test above, we also know we have
* the call reference.
*/
- call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]);
+ call_ref = EXTRACT_BE_U_3(p + CALL_REF_POS);
ND_PRINT((ndo, "CALL_REF:0x%06x", call_ref));
} else {
- /* SCCOP with some unknown protocol atop it */
- ND_PRINT((ndo, "SSCOP, proto %d ", p[PROTO_POS]));
+ /* SSCOP with some unknown protocol atop it */
+ ND_PRINT((ndo, "SSCOP, proto %d ", EXTRACT_U_1(p + PROTO_POS)));
}
+ return;
+
+trunc:
+ ND_PRINT((ndo, " %s", tstr));
}
/*
switch (vci) {
case VCI_PPC:
- sig_print(ndo, p, caplen);
+ sig_print(ndo, p);
return;
case VCI_BCC:
uint8_t unused[28];
};
-int
+void
oam_print (netdissect_options *ndo,
const u_char *p, u_int length, u_int hec)
{
} oam_ptr;
- cell_header = EXTRACT_32BITS(p+hec);
- cell_type = ((*(p+ATM_HDR_LEN_NOHEC+hec))>>4) & 0x0f;
- func_type = (*(p+ATM_HDR_LEN_NOHEC+hec)) & 0x0f;
+ ND_TCHECK_1(p + ATM_HDR_LEN_NOHEC + hec);
+ cell_header = EXTRACT_BE_U_4(p + hec);
+ cell_type = (EXTRACT_U_1((p + ATM_HDR_LEN_NOHEC + hec)) >> 4) & 0x0f;
+ func_type = EXTRACT_U_1((p + ATM_HDR_LEN_NOHEC + hec)) & 0x0f;
vpi = (cell_header>>20)&0xff;
vci = (cell_header>>4)&0xffff;
clp, length));
if (!ndo->ndo_vflag) {
- return 1;
+ return;
}
ND_PRINT((ndo, "\n\tcell-type %s (%u)",
switch (cell_type << 4 | func_type) {
case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_LOOPBACK):
oam_ptr.oam_fm_loopback = (const struct oam_fm_loopback_t *)(p + OAM_CELLTYPE_FUNCTYPE_LEN);
+ ND_TCHECK(*oam_ptr.oam_fm_loopback);
ND_PRINT((ndo, "\n\tLoopback-Indicator %s, Correlation-Tag 0x%08x",
tok2str(oam_fm_loopback_indicator_values,
"Unknown",
oam_ptr.oam_fm_loopback->loopback_indicator & OAM_FM_LOOPBACK_INDICATOR_MASK),
- EXTRACT_32BITS(&oam_ptr.oam_fm_loopback->correlation_tag)));
+ EXTRACT_BE_U_4(&oam_ptr.oam_fm_loopback->correlation_tag)));
ND_PRINT((ndo, "\n\tLocation-ID "));
for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->loopback_id); idx++) {
if (idx % 2) {
- ND_PRINT((ndo, "%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->loopback_id[idx])));
+ ND_PRINT((ndo, "%04x ", EXTRACT_BE_U_2(&oam_ptr.oam_fm_loopback->loopback_id[idx])));
}
}
ND_PRINT((ndo, "\n\tSource-ID "));
for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->source_id); idx++) {
if (idx % 2) {
- ND_PRINT((ndo, "%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->source_id[idx])));
+ ND_PRINT((ndo, "%04x ", EXTRACT_BE_U_2(&oam_ptr.oam_fm_loopback->source_id[idx])));
}
}
break;
case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_AIS):
case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_RDI):
oam_ptr.oam_fm_ais_rdi = (const struct oam_fm_ais_rdi_t *)(p + OAM_CELLTYPE_FUNCTYPE_LEN);
+ ND_TCHECK(*oam_ptr.oam_fm_ais_rdi);
ND_PRINT((ndo, "\n\tFailure-type 0x%02x", oam_ptr.oam_fm_ais_rdi->failure_type));
ND_PRINT((ndo, "\n\tLocation-ID "));
for (idx = 0; idx < sizeof(oam_ptr.oam_fm_ais_rdi->failure_location); idx++) {
if (idx % 2) {
- ND_PRINT((ndo, "%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_ais_rdi->failure_location[idx])));
+ ND_PRINT((ndo, "%04x ", EXTRACT_BE_U_2(&oam_ptr.oam_fm_ais_rdi->failure_location[idx])));
}
}
break;
}
/* crc10 checksum verification */
- cksum = EXTRACT_16BITS(p + OAM_CELLTYPE_FUNCTYPE_LEN + OAM_FUNCTION_SPECIFIC_LEN)
+ ND_TCHECK_2(p + OAM_CELLTYPE_FUNCTYPE_LEN + OAM_FUNCTION_SPECIFIC_LEN);
+ cksum = EXTRACT_BE_U_2(p + OAM_CELLTYPE_FUNCTYPE_LEN + OAM_FUNCTION_SPECIFIC_LEN)
& OAM_CRC10_MASK;
cksum_shouldbe = verify_crc10_cksum(0, p, OAM_PAYLOAD_LEN);
cksum,
cksum_shouldbe == 0 ? "" : "in"));
- return 1;
+ return;
+
+trunc:
+ ND_PRINT((ndo, "[|oam]"));
+ return;
}
projects / tcpdump / blobdiff