diff options
Diffstat (limited to 'freebsd/contrib/tcpdump/print-mpcp.c')
| -rw-r--r-- | freebsd/contrib/tcpdump/print-mpcp.c | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/freebsd/contrib/tcpdump/print-mpcp.c b/freebsd/contrib/tcpdump/print-mpcp.c new file mode 100644 index 00000000..f9ea1683 --- /dev/null +++ b/freebsd/contrib/tcpdump/print-mpcp.c @@ -0,0 +1,276 @@ +#include <machine/rtems-bsd-user-space.h> + +/* + * Copyright (c) 1998-2006 The TCPDUMP project + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code + * distributions retain the above copyright notice and this paragraph + * in its entirety, and (2) distributions including binary code include + * the above copyright notice and this paragraph in its entirety in + * the documentation or other materials provided with the distribution. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND + * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT + * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE. + * + * support for the IEEE MPCP protocol as per 802.3ah + * + * Original code by Hannes Gredler (hannes@juniper.net) + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/tcpdump/print-mpcp.c,v 1.2 2006-02-10 17:24:55 hannes Exp $"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <tcpdump-stdinc.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "interface.h" +#include "extract.h" +#include "addrtoname.h" +#include "ether.h" + +#define MPCP_TIMESTAMP_LEN 4 +#define MPCP_TIMESTAMP_DURATION_LEN 2 + +struct mpcp_common_header_t { + u_int8_t opcode[2]; + u_int8_t timestamp[MPCP_TIMESTAMP_LEN]; +}; + +#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_REG_REQ, "Register Request" }, + { MPCP_OPCODE_REG, "Register" }, + { MPCP_OPCODE_REG_ACK, "Register ACK" }, + { 0, NULL} +}; + +#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" }, + { 0x20, "Force Grant #2" }, + { 0x40, "Force Grant #3" }, + { 0x80, "Force Grant #4" }, + { 0, NULL} +}; + +struct mpcp_grant_t { + u_int8_t starttime[MPCP_TIMESTAMP_LEN]; + u_int8_t duration[MPCP_TIMESTAMP_DURATION_LEN]; +}; + +struct mpcp_reg_req_t { + u_int8_t flags; + u_int8_t pending_grants; +}; + + +static const struct tok mpcp_reg_req_flag_values[] = { + { 1, "Register" }, + { 3, "De-Register" }, + { 0, NULL} +}; + +struct mpcp_reg_t { + u_int8_t assigned_port[2]; + u_int8_t flags; + u_int8_t sync_time[MPCP_TIMESTAMP_DURATION_LEN]; + u_int8_t echoed_pending_grants; +}; + +static const struct tok mpcp_reg_flag_values[] = { + { 1, "Re-Register" }, + { 2, "De-Register" }, + { 3, "ACK" }, + { 4, "NACK" }, + { 0, NULL} +}; + +#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 { + u_int8_t flags; + u_int8_t echoed_assigned_port[2]; + u_int8_t echoed_sync_time[MPCP_TIMESTAMP_DURATION_LEN]; +}; + +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; + const struct mpcp_reg_req_t *reg_req; + const struct mpcp_reg_t *reg; + const struct mpcp_reg_ack_t *reg_ack; + } mpcp; + + + const u_char *tptr; + u_int16_t opcode; + u_int8_t grant_numbers, grant; + u_int8_t queue_sets, queue_set, report_bitmap, report; + + tptr=pptr; + mpcp.common_header = (const struct mpcp_common_header_t *)pptr; + + if (!TTEST2(*tptr, sizeof(const struct mpcp_common_header_t))) + goto trunc; + opcode = EXTRACT_16BITS(mpcp.common_header->opcode); + printf("MPCP, Opcode %s", tok2str(mpcp_opcode_values, "Unknown (%u)", opcode)); + if (opcode != MPCP_OPCODE_PAUSE) { + printf(", Timestamp %u ticks", EXTRACT_32BITS(mpcp.common_header->timestamp)); + } + printf(", length %u", length); + + if (!vflag) + return; + + tptr += sizeof(const struct mpcp_common_header_t); + + switch (opcode) { + case MPCP_OPCODE_PAUSE: + break; + + case MPCP_OPCODE_GATE: + if (!TTEST2(*tptr, MPCP_GRANT_NUMBER_LEN)) + goto trunc; + grant_numbers = *tptr & MPCP_GRANT_NUMBER_MASK; + printf("\n\tGrant Numbers %u, Flags [ %s ]", + grant_numbers, + bittok2str(mpcp_grant_flag_values, + "?", + *tptr &~ MPCP_GRANT_NUMBER_MASK)); + tptr++; + + for (grant = 1; grant <= grant_numbers; grant++) { + if (!TTEST2(*tptr, sizeof(const struct mpcp_grant_t))) + goto trunc; + mpcp.grant = (const struct mpcp_grant_t *)tptr; + printf("\n\tGrant #%u, Start-Time %u ticks, duration %u ticks", + grant, + EXTRACT_32BITS(mpcp.grant->starttime), + EXTRACT_16BITS(mpcp.grant->duration)); + tptr += sizeof(const struct mpcp_grant_t); + } + + if (!TTEST2(*tptr, MPCP_TIMESTAMP_DURATION_LEN)) + goto trunc; + printf("\n\tSync-Time %u ticks", EXTRACT_16BITS(tptr)); + break; + + + case MPCP_OPCODE_REPORT: + if (!TTEST2(*tptr, MPCP_REPORT_QUEUESETS_LEN)) + goto trunc; + queue_sets = *tptr; + tptr+=MPCP_REPORT_QUEUESETS_LEN; + printf("\n\tTotal Queue-Sets %u", queue_sets); + + for (queue_set = 1; queue_set < queue_sets; queue_set++) { + if (!TTEST2(*tptr, MPCP_REPORT_REPORTBITMAP_LEN)) + goto trunc; + report_bitmap = *(tptr); + printf("\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) { + if (!TTEST2(*tptr, MPCP_TIMESTAMP_DURATION_LEN)) + goto trunc; + printf("\n\t Q%u Report, Duration %u ticks", + report, + EXTRACT_16BITS(tptr)); + tptr+=MPCP_TIMESTAMP_DURATION_LEN; + } + report++; + report_bitmap = report_bitmap >> 1; + } + } + break; + + case MPCP_OPCODE_REG_REQ: + if (!TTEST2(*tptr, sizeof(const struct mpcp_reg_req_t))) + goto trunc; + mpcp.reg_req = (const struct mpcp_reg_req_t *)tptr; + printf("\n\tFlags [ %s ], Pending-Grants %u", + bittok2str(mpcp_reg_req_flag_values, "Reserved", mpcp.reg_req->flags), + mpcp.reg_req->pending_grants); + break; + + case MPCP_OPCODE_REG: + if (!TTEST2(*tptr, sizeof(const struct mpcp_reg_t))) + goto trunc; + mpcp.reg = (const struct mpcp_reg_t *)tptr; + printf("\n\tAssigned-Port %u, Flags [ %s ]" \ + "\n\tSync-Time %u ticks, Echoed-Pending-Grants %u", + EXTRACT_16BITS(mpcp.reg->assigned_port), + bittok2str(mpcp_reg_flag_values, "Reserved", mpcp.reg->flags), + EXTRACT_16BITS(mpcp.reg->sync_time), + mpcp.reg->echoed_pending_grants); + break; + + case MPCP_OPCODE_REG_ACK: + if (!TTEST2(*tptr, sizeof(const struct mpcp_reg_ack_t))) + goto trunc; + mpcp.reg_ack = (const struct mpcp_reg_ack_t *)tptr; + printf("\n\tEchoed-Assigned-Port %u, Flags [ %s ]" \ + "\n\tEchoed-Sync-Time %u ticks", + EXTRACT_16BITS(mpcp.reg_ack->echoed_assigned_port), + bittok2str(mpcp_reg_ack_flag_values, "Reserved", mpcp.reg_ack->flags), + EXTRACT_16BITS(mpcp.reg_ack->echoed_sync_time)); + break; + + default: + /* unknown opcode - hexdump for now */ + print_unknown_data(pptr, "\n\t", length); + break; + } + + return; + +trunc: + printf("\n\t[|MPCP]"); +} |