X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/0860434f38178598fff25ede38436ff55ffedce5..05ec05a87b3a7c6983a16b5ae62d0f1512c4ce89:/print-mpcp.c diff --git a/print-mpcp.c b/print-mpcp.c index 97b5d66d..244f2802 100644 --- a/print-mpcp.c +++ b/print-mpcp.c @@ -19,7 +19,7 @@ #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 $"; + "@(#) $Header: /tcpdump/master/tcpdump/print-mpcp.c,v 1.2 2006-02-10 17:24:55 hannes Exp $"; #endif #ifdef HAVE_CONFIG_H @@ -37,28 +37,32 @@ static const char rcsid[] _U_ = #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[4]; + 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_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_LEN 1 #define MPCP_GRANT_NUMBER_MASK 0x7 static const struct tok mpcp_grant_flag_values[] = { { 0x08, "Discovery" }, @@ -70,17 +74,30 @@ static const struct tok mpcp_grant_flag_values[] = { }; struct mpcp_grant_t { - u_int8_t starttime[4]; - u_int8_t length[2]; + 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_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 { + 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" }, @@ -88,7 +105,27 @@ static const struct tok mpcp_register_flag_values[] = { { 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 { + 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} @@ -100,22 +137,26 @@ 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; - TCHECK(*mpcp.common_header); + 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", EXTRACT_32BITS(mpcp.common_header->timestamp)); + printf(", Timestamp %u ticks", EXTRACT_32BITS(mpcp.common_header->timestamp)); } printf(", length %u", length); @@ -129,6 +170,8 @@ mpcp_print(register const u_char *pptr, register u_int length) { 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, @@ -138,27 +181,94 @@ mpcp_print(register const u_char *pptr, register u_int length) { 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, length %u", + printf("\n\tGrant #%u, Start-Time %u ticks, duration %u ticks", grant, EXTRACT_32BITS(mpcp.grant->starttime), - EXTRACT_16BITS(mpcp.grant->length)); + EXTRACT_16BITS(mpcp.grant->duration)); tptr += sizeof(const struct mpcp_grant_t); } - printf("\n\tSync-Time %u", EXTRACT_16BITS(tptr)); + if (!TTEST2(*tptr, MPCP_TIMESTAMP_DURATION_LEN)) + goto trunc; + printf("\n\tSync-Time %u ticks", EXTRACT_16BITS(tptr)); break; - /* FIXME */ + case MPCP_OPCODE_REPORT: - case MPCP_OPCODE_REGISTER_REQ: - case MPCP_OPCODE_REGISTER: - case MPCP_OPCODE_REGISTER_ACK: + 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]"); }