Adding upstream version 4.99.4.upstream/4.99.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 235 insertions, 0 deletions

diff --git a/print-mpcp.c b/print-mpcp.c
new file mode 100644
index 0000000..4ba873b
--- /dev/null
+++ b/print-mpcp.c
@@ -0,0 +1,235 @@
+/*
+ * 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.
+ *
+ * Original code by Hannes Gredler (hannes@gredler.at)
+ */
+
+/* \summary: IEEE 802.3ah Multi-Point Control Protocol (MPCP) printer */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "netdissect-stdinc.h"
+
+#include "netdissect.h"
+#include "extract.h"
+
+struct mpcp_common_header_t {
+    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_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 {
+    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_reg_req_flag_values[] = {
+    { 1, "Register" },
+    { 3, "De-Register" },
+    { 0, NULL}
+};
+
+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" },
+    { 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 {
+    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(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;
+    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;
+
+    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) {
+        ND_PRINT(", Timestamp %u ticks", timestamp);
+    }
+    ND_PRINT(", length %u", length);
+
+    if (!ndo->ndo_vflag)
+        return;
+
+    tptr += sizeof(struct mpcp_common_header_t);
+
+    switch (opcode) {
+    case MPCP_OPCODE_PAUSE:
+        break;
+
+    case MPCP_OPCODE_GATE:
+        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,
+                          "?",
+                          GET_U_1(tptr) & ~MPCP_GRANT_NUMBER_MASK));
+        tptr++;
+
+        for (grant = 1; grant <= grant_numbers; grant++) {
+            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,
+                   GET_BE_U_4(mpcp_grant->starttime),
+                   GET_BE_U_2(mpcp_grant->duration));
+            tptr += sizeof(struct mpcp_grant_t);
+        }
+
+        ND_PRINT("\n\tSync-Time %u ticks", GET_BE_U_2(tptr));
+        break;
+
+
+    case MPCP_OPCODE_REPORT:
+        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;
+    }
+}