* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
- * support for the IEEE MPCP protocol as per 802.3ah
- *
*/
-#ifndef lint
-static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-mpcp.c,v 1.1 2006-02-10 04:52:25 hannes Exp $";
-#endif
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+/* \summary: IEEE 802.3ah Multi-Point Control Protocol (MPCP) printer */
-#include <tcpdump-stdinc.h>
+#include <config.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include "netdissect-stdinc.h"
-#include "interface.h"
+#include "netdissect.h"
#include "extract.h"
-#include "addrtoname.h"
-#include "ether.h"
struct mpcp_common_header_t {
- u_int8_t opcode[2];
- u_int8_t timestamp[4];
+ nd_uint16_t opcode;
+ nd_uint32_t timestamp;
};
-#define MPCP_OPCODE_PAUSE 0x0001
-#define MPCP_OPCODE_GATE 0x0002
-#define MPCP_OPCODE_REPORT 0x0003
-#define MPCP_OPCODE_REGISTER_REQ 0x0004
-#define MPCP_OPCODE_REGISTER 0x0005
-#define MPCP_OPCODE_REGISTER_ACK 0x0006
+#define MPCP_OPCODE_PAUSE 0x0001
+#define MPCP_OPCODE_GATE 0x0002
+#define MPCP_OPCODE_REPORT 0x0003
+#define MPCP_OPCODE_REG_REQ 0x0004
+#define MPCP_OPCODE_REG 0x0005
+#define MPCP_OPCODE_REG_ACK 0x0006
static const struct tok mpcp_opcode_values[] = {
{ MPCP_OPCODE_PAUSE, "Pause" },
{ MPCP_OPCODE_GATE, "Gate" },
{ MPCP_OPCODE_REPORT, "Report" },
- { MPCP_OPCODE_REGISTER_REQ, "Register Request" },
- { MPCP_OPCODE_REGISTER, "Register" },
- { MPCP_OPCODE_REGISTER_ACK, "Register ACK" },
+ { MPCP_OPCODE_REG_REQ, "Register Request" },
+ { MPCP_OPCODE_REG, "Register" },
+ { MPCP_OPCODE_REG_ACK, "Register ACK" },
{ 0, NULL}
};
-#define MPCP_GRANT_NUMBER_MASK 0x7
+#define MPCP_GRANT_NUMBER_LEN 1
+#define MPCP_GRANT_NUMBER_MASK 0x7
static const struct tok mpcp_grant_flag_values[] = {
{ 0x08, "Discovery" },
{ 0x10, "Force Grant #1" },
};
struct mpcp_grant_t {
- u_int8_t starttime[4];
- u_int8_t length[2];
+ nd_uint32_t starttime;
+ nd_uint16_t duration;
+};
+
+struct mpcp_reg_req_t {
+ nd_uint8_t flags;
+ nd_uint8_t pending_grants;
};
-static const struct tok mpcp_register_req_flag_values[] = {
+
+static const struct tok mpcp_reg_req_flag_values[] = {
{ 1, "Register" },
{ 3, "De-Register" },
{ 0, NULL}
};
-static const struct tok mpcp_register_flag_values[] = {
+struct mpcp_reg_t {
+ nd_uint16_t assigned_port;
+ nd_uint8_t flags;
+ nd_uint16_t sync_time;
+ nd_uint8_t echoed_pending_grants;
+};
+
+static const struct tok mpcp_reg_flag_values[] = {
{ 1, "Re-Register" },
{ 2, "De-Register" },
{ 3, "ACK" },
{ 0, NULL}
};
-static const struct tok mpcp_register_ack_flag_values[] = {
+#define MPCP_REPORT_QUEUESETS_LEN 1
+#define MPCP_REPORT_REPORTBITMAP_LEN 1
+static const struct tok mpcp_report_bitmap_values[] = {
+ { 0x01, "Q0" },
+ { 0x02, "Q1" },
+ { 0x04, "Q2" },
+ { 0x08, "Q3" },
+ { 0x10, "Q4" },
+ { 0x20, "Q5" },
+ { 0x40, "Q6" },
+ { 0x80, "Q7" },
+ { 0, NULL}
+};
+
+struct mpcp_reg_ack_t {
+ nd_uint8_t flags;
+ nd_uint16_t echoed_assigned_port;
+ nd_uint16_t echoed_sync_time;
+};
+
+static const struct tok mpcp_reg_ack_flag_values[] = {
{ 0, "NACK" },
{ 1, "ACK" },
{ 0, NULL}
};
void
-mpcp_print(register const u_char *pptr, register u_int length) {
-
- union {
- const struct mpcp_common_header_t *common_header;
- const struct mpcp_grant_t *grant;
- } mpcp;
+mpcp_print(netdissect_options *ndo, const u_char *pptr, u_int length)
+{
+ const struct mpcp_common_header_t *mpcp_common_header;
+ const struct mpcp_reg_req_t *mpcp_reg_req;
+ const struct mpcp_reg_t *mpcp_reg;
+ const struct mpcp_reg_ack_t *mpcp_reg_ack;
const u_char *tptr;
- u_int16_t opcode;
- u_int8_t grant_numbers, grant;
+ uint16_t opcode;
+ uint32_t timestamp;
+ uint8_t grant_numbers, grant;
+ uint8_t queue_sets, queue_set, report_bitmap, report;
+ ndo->ndo_protocol = "mpcp";
tptr=pptr;
- mpcp.common_header = (const struct mpcp_common_header_t *)pptr;
- TCHECK(*mpcp.common_header);
+ mpcp_common_header = (const struct mpcp_common_header_t *)pptr;
- opcode = EXTRACT_16BITS(mpcp.common_header->opcode);
-
- printf("MPCP, Opcode %s", tok2str(mpcp_opcode_values, "Unknown (%u)", opcode));
+ opcode = GET_BE_U_2(mpcp_common_header->opcode);
+ timestamp = GET_BE_U_4(mpcp_common_header->timestamp);
+ ND_PRINT("MPCP, Opcode %s", tok2str(mpcp_opcode_values, "Unknown (%u)", opcode));
if (opcode != MPCP_OPCODE_PAUSE) {
- printf(", Timestamp %u", EXTRACT_32BITS(mpcp.common_header->timestamp));
+ ND_PRINT(", Timestamp %u ticks", timestamp);
}
- printf(", length %u", length);
+ ND_PRINT(", length %u", length);
- if (!vflag)
+ if (!ndo->ndo_vflag)
return;
- tptr += sizeof(const struct mpcp_common_header_t);
+ tptr += sizeof(struct mpcp_common_header_t);
switch (opcode) {
case MPCP_OPCODE_PAUSE:
break;
case MPCP_OPCODE_GATE:
- grant_numbers = *tptr & MPCP_GRANT_NUMBER_MASK;
- printf("\n\tGrant Numbers %u, Flags [ %s ]",
+ grant_numbers = GET_U_1(tptr) & MPCP_GRANT_NUMBER_MASK;
+ ND_PRINT("\n\tGrant Numbers %u, Flags [ %s ]",
grant_numbers,
bittok2str(mpcp_grant_flag_values,
"?",
- *tptr &~ MPCP_GRANT_NUMBER_MASK));
+ GET_U_1(tptr) & ~MPCP_GRANT_NUMBER_MASK));
tptr++;
for (grant = 1; grant <= grant_numbers; grant++) {
- mpcp.grant = (const struct mpcp_grant_t *)tptr;
- printf("\n\tGrant #%u, Start-Time %u, length %u",
+ const struct mpcp_grant_t *mpcp_grant = (const struct mpcp_grant_t *)tptr;
+ ND_PRINT("\n\tGrant #%u, Start-Time %u ticks, duration %u ticks",
grant,
- EXTRACT_32BITS(mpcp.grant->starttime),
- EXTRACT_16BITS(mpcp.grant->length));
- tptr += sizeof(const struct mpcp_grant_t);
+ GET_BE_U_4(mpcp_grant->starttime),
+ GET_BE_U_2(mpcp_grant->duration));
+ tptr += sizeof(struct mpcp_grant_t);
}
- printf("\n\tSync-Time %u", EXTRACT_16BITS(tptr));
+ ND_PRINT("\n\tSync-Time %u ticks", GET_BE_U_2(tptr));
break;
- /* FIXME */
+
case MPCP_OPCODE_REPORT:
- case MPCP_OPCODE_REGISTER_REQ:
- case MPCP_OPCODE_REGISTER:
- case MPCP_OPCODE_REGISTER_ACK:
+ queue_sets = GET_U_1(tptr);
+ tptr+=MPCP_REPORT_QUEUESETS_LEN;
+ ND_PRINT("\n\tTotal Queue-Sets %u", queue_sets);
+
+ for (queue_set = 1; queue_set < queue_sets; queue_set++) {
+ report_bitmap = GET_U_1(tptr);
+ ND_PRINT("\n\t Queue-Set #%u, Report-Bitmap [ %s ]",
+ queue_sets,
+ bittok2str(mpcp_report_bitmap_values, "Unknown", report_bitmap));
+ tptr++;
+
+ report=1;
+ while (report_bitmap != 0) {
+ if (report_bitmap & 1) {
+ ND_PRINT("\n\t Q%u Report, Duration %u ticks",
+ report,
+ GET_BE_U_2(tptr));
+ tptr += 2;
+ }
+ report++;
+ report_bitmap = report_bitmap >> 1;
+ }
+ }
+ break;
+
+ case MPCP_OPCODE_REG_REQ:
+ mpcp_reg_req = (const struct mpcp_reg_req_t *)tptr;
+ ND_PRINT("\n\tFlags [ %s ], Pending-Grants %u",
+ bittok2str(mpcp_reg_req_flag_values, "Reserved", GET_U_1(mpcp_reg_req->flags)),
+ GET_U_1(mpcp_reg_req->pending_grants));
+ break;
+
+ case MPCP_OPCODE_REG:
+ mpcp_reg = (const struct mpcp_reg_t *)tptr;
+ ND_PRINT("\n\tAssigned-Port %u, Flags [ %s ]"
+ "\n\tSync-Time %u ticks, Echoed-Pending-Grants %u",
+ GET_BE_U_2(mpcp_reg->assigned_port),
+ bittok2str(mpcp_reg_flag_values, "Reserved", GET_U_1(mpcp_reg->flags)),
+ GET_BE_U_2(mpcp_reg->sync_time),
+ GET_U_1(mpcp_reg->echoed_pending_grants));
+ break;
+
+ case MPCP_OPCODE_REG_ACK:
+ mpcp_reg_ack = (const struct mpcp_reg_ack_t *)tptr;
+ ND_PRINT("\n\tEchoed-Assigned-Port %u, Flags [ %s ]"
+ "\n\tEchoed-Sync-Time %u ticks",
+ GET_BE_U_2(mpcp_reg_ack->echoed_assigned_port),
+ bittok2str(mpcp_reg_ack_flag_values, "Reserved", GET_U_1(mpcp_reg_ack->flags)),
+ GET_BE_U_2(mpcp_reg_ack->echoed_sync_time));
+ break;
+
default:
+ /* unknown opcode - hexdump for now */
+ print_unknown_data(ndo,pptr, "\n\t", length);
break;
}
-
- return;
-trunc:
- printf("\n\t[|MPCP]");
}
projects / tcpdump / blobdiff