Adding upstream version 4.2.2.upstream/4.2.2

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

1 files changed, 497 insertions, 0 deletions

diff --git a/epan/dissectors/packet-pagp.c b/epan/dissectors/packet-pagp.c
new file mode 100644
index 00000000..ca4474f0
--- /dev/null
+++ b/epan/dissectors/packet-pagp.c
@@ -0,0 +1,497 @@
+/* packet-pagp.c
+ * Routines for PAgP (Port Aggregation Protocol - aka FEC) dissection
+ * Original Author Mark C. Brown <mbrown@hp.com>
+ * Copyright (C) 2004 Hewlett-Packard Development Company, L.P.
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * Copied from packet-slowprotocols.c
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include <epan/expert.h>
+#include <epan/to_str.h>
+#include <epan/cisco_pid.h>
+
+void proto_register_pagp(void);
+void proto_reg_handoff_pagp(void);
+
+static dissector_handle_t pagp_handle;
+
+/* Offsets of fields within a PagP PDU */
+
+#define PAGP_VERSION_NUMBER              0
+
+#define PAGP_FLAGS                       1
+#define PAGP_LOCAL_DEVICE_ID             2
+#define PAGP_LOCAL_LEARN_CAP             8
+#define PAGP_LOCAL_PORT_PRIORITY         9
+#define PAGP_LOCAL_SENT_PORT_IFINDEX    10
+#define PAGP_LOCAL_GROUP_CAPABILITY     14
+#define PAGP_LOCAL_GROUP_IFINDEX        18
+#define PAGP_PARTNER_DEVICE_ID          22
+#define PAGP_PARTNER_LEARN_CAP          28
+#define PAGP_PARTNER_PORT_PRIORITY      29
+#define PAGP_PARTNER_SENT_PORT_IFINDEX  30
+#define PAGP_PARTNER_GROUP_CAPABILITY   34
+#define PAGP_PARTNER_GROUP_IFINDEX      38
+#define PAGP_PARTNER_COUNT              42
+#define PAGP_NUM_TLVS                   44
+#define PAGP_FIRST_TLV                  46
+
+#define PAGP_FLUSH_LOCAL_DEVICE_ID       2
+#define PAGP_FLUSH_PARTNER_DEVICE_ID     8
+#define PAGP_FLUSH_TRANSACTION_ID       14
+
+/* PDU Versions */
+
+#define PAGP_INFO_PDU                    1
+#define PAGP_FLUSH_PDU                   2
+
+/* Flag bits */
+
+#define PAGP_FLAGS_SLOW_HELLO           0x01
+#define PAGP_FLAGS_AUTO_MODE            0x02
+#define PAGP_FLAGS_CONSISTENT_STATE     0x04
+
+/* TLV Types */
+
+
+#define PAGP_TLV_DEVICE_NAME             1
+#define PAGP_TLV_PORT_NAME               2
+#define PAGP_TLV_AGPORT_MAC              3
+#define PAGP_TLV_RESERVED                4
+
+/* Initialise the protocol and registered fields */
+
+static int proto_pagp = -1;
+
+static int hf_pagp_version_number = -1;
+
+static int hf_pagp_flags = -1;
+static int hf_pagp_flags_slow_hello = -1;
+static int hf_pagp_flags_auto_mode = -1;
+static int hf_pagp_flags_consistent_state = -1;
+static int hf_pagp_local_device_id = -1;
+static int hf_pagp_local_learn_cap = -1;
+static int hf_pagp_local_port_priority = -1;
+static int hf_pagp_local_sent_port_ifindex = -1;
+static int hf_pagp_local_group_capability = -1;
+static int hf_pagp_local_group_ifindex = -1;
+static int hf_pagp_partner_device_id = -1;
+static int hf_pagp_partner_learn_cap = -1;
+static int hf_pagp_partner_port_priority = -1;
+static int hf_pagp_partner_sent_port_ifindex = -1;
+static int hf_pagp_partner_group_capability = -1;
+static int hf_pagp_partner_group_ifindex = -1;
+static int hf_pagp_partner_count = -1;
+static int hf_pagp_num_tlvs = -1;
+static int hf_pagp_tlv = -1;
+static int hf_pagp_tlv_length = -1;
+static int hf_pagp_tlv_device_name = -1;
+static int hf_pagp_tlv_port_name = -1;
+static int hf_pagp_tlv_agport_mac = -1;
+
+static int hf_pagp_flush_local_device_id = -1;
+static int hf_pagp_flush_partner_device_id = -1;
+static int hf_pagp_flush_transaction_id = -1;
+
+/* Initialise the subtree pointers */
+
+static gint ett_pagp = -1;
+static gint ett_pagp_flags = -1;
+static gint ett_pagp_tlvs = -1;
+
+static expert_field ei_pagp_tlv_length = EI_INIT;
+
+/* General declarations and macros */
+
+static const value_string pdu_vers[] = {
+    { 1, "Info PDU" },
+    { 2, "Flush PDU" },
+    { 0, NULL }
+};
+
+static const value_string learn_cap[] = {
+    { 1, "Source-based Distribution" },
+    { 2, "Arbitrary Distribution" },
+    { 0, NULL }
+};
+
+static const value_string tlv_types[] = {
+    { 1, "Device Name TLV" },
+    { 2, "Physical Port Name TLV" },
+    { 3, "Agport MAC Address" },
+    { 4, "Reserved" },
+    { 0, NULL }
+};
+
+static const true_false_string automode = {
+    "Yes",
+    "Desirable Mode"
+};
+
+/* Code to actually dissect the PAGP packets */
+static int
+dissect_pagp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+    guint32 raw_word;
+    guint16 num_tlvs;
+    guint16 tlv;
+    guint16 len;
+    guint16 ii;
+    guint16 offset = PAGP_FIRST_TLV;
+    guint8  raw_octet;
+
+    guint8  flags;
+
+    proto_tree *pagp_tree = NULL;
+    proto_item *pagp_item, *len_item;
+    proto_tree *tlv_tree;
+    static int * const pagp_flags[] = {
+        &hf_pagp_flags_slow_hello,
+        &hf_pagp_flags_auto_mode,
+        &hf_pagp_flags_consistent_state,
+        NULL,
+    };
+
+
+    col_set_str(pinfo->cinfo, COL_PROTOCOL, "PAGP"); /* PAGP Protocol */
+
+    col_clear(pinfo->cinfo, COL_INFO);
+
+    raw_octet = tvb_get_guint8(tvb, PAGP_VERSION_NUMBER);
+    if (tree) {
+        pagp_item = proto_tree_add_protocol_format(tree, proto_pagp, tvb,
+                                                   0, -1, "Port Aggregation Protocol");
+        pagp_tree = proto_item_add_subtree(pagp_item, ett_pagp);
+        proto_tree_add_uint(pagp_tree, hf_pagp_version_number, tvb,
+                            PAGP_VERSION_NUMBER, 1, raw_octet);
+    }
+    col_append_str(pinfo->cinfo, COL_INFO,
+                   val_to_str_const(raw_octet, pdu_vers, "Unknown PDU version"));
+
+    if (raw_octet == PAGP_FLUSH_PDU) {
+
+        col_append_fstr(pinfo->cinfo, COL_INFO, "; Local DevID: %s",
+                        tvb_ether_to_str(pinfo->pool, tvb, PAGP_FLUSH_LOCAL_DEVICE_ID));
+
+        proto_tree_add_item(pagp_tree, hf_pagp_flush_local_device_id, tvb,
+                            PAGP_FLUSH_LOCAL_DEVICE_ID, 6, ENC_NA);
+
+        col_append_fstr(pinfo->cinfo, COL_INFO, ", Partner DevID: %s",
+                        tvb_ether_to_str(pinfo->pool, tvb, PAGP_FLUSH_PARTNER_DEVICE_ID));
+
+        proto_tree_add_item(pagp_tree, hf_pagp_flush_partner_device_id, tvb,
+                            PAGP_FLUSH_PARTNER_DEVICE_ID, 6, ENC_NA);
+
+        raw_word = tvb_get_ntohl(tvb, PAGP_FLUSH_TRANSACTION_ID);
+        col_append_fstr(pinfo->cinfo, COL_INFO, "; Transaction ID: 0x%x ", raw_word);
+
+        proto_tree_add_uint(pagp_tree, hf_pagp_flush_transaction_id, tvb,
+                            PAGP_FLUSH_TRANSACTION_ID, 4, raw_word);
+        return tvb_captured_length(tvb);
+    }
+
+    /* Info PDU */
+
+    flags = tvb_get_guint8(tvb, PAGP_FLAGS);
+    col_append_fstr(pinfo->cinfo, COL_INFO, "; Flags 0x%x", flags);
+
+    proto_tree_add_bitmask(pagp_tree, tvb, PAGP_FLAGS, hf_pagp_flags, ett_pagp_flags, pagp_flags, ENC_NA);
+
+    col_append_fstr(pinfo->cinfo, COL_INFO, "; Local DevID: %s",
+                    tvb_ether_to_str(pinfo->pool, tvb, PAGP_LOCAL_DEVICE_ID));
+
+    proto_tree_add_item(pagp_tree, hf_pagp_local_device_id, tvb,
+                        PAGP_LOCAL_DEVICE_ID, 6, ENC_NA);
+
+    if (tree) {
+        proto_tree_add_item(pagp_tree, hf_pagp_local_learn_cap, tvb,
+                            PAGP_LOCAL_LEARN_CAP, 1, ENC_NA);
+
+        proto_tree_add_item(pagp_tree, hf_pagp_local_port_priority, tvb,
+                            PAGP_LOCAL_PORT_PRIORITY, 1, ENC_NA);
+
+        proto_tree_add_item(pagp_tree, hf_pagp_local_sent_port_ifindex, tvb,
+                            PAGP_LOCAL_SENT_PORT_IFINDEX, 4, ENC_BIG_ENDIAN);
+
+        proto_tree_add_item(pagp_tree, hf_pagp_local_group_capability, tvb,
+                            PAGP_LOCAL_GROUP_CAPABILITY, 4, ENC_BIG_ENDIAN);
+
+        proto_tree_add_item(pagp_tree, hf_pagp_local_group_ifindex, tvb,
+                            PAGP_LOCAL_GROUP_IFINDEX, 4, ENC_BIG_ENDIAN);
+    }
+
+    col_append_fstr(pinfo->cinfo, COL_INFO, ", Partner DevID: %s",
+                    tvb_ether_to_str(pinfo->pool, tvb, PAGP_PARTNER_DEVICE_ID));
+
+    proto_tree_add_item(pagp_tree, hf_pagp_partner_device_id, tvb,
+                        PAGP_PARTNER_DEVICE_ID, 6, ENC_NA);
+
+    proto_tree_add_item(pagp_tree, hf_pagp_partner_learn_cap, tvb,
+                        PAGP_PARTNER_LEARN_CAP, 1, ENC_NA);
+
+    proto_tree_add_item(pagp_tree, hf_pagp_partner_port_priority, tvb,
+                        PAGP_PARTNER_PORT_PRIORITY, 1, ENC_NA);
+
+    proto_tree_add_item(pagp_tree, hf_pagp_partner_sent_port_ifindex, tvb,
+                        PAGP_PARTNER_SENT_PORT_IFINDEX, 4, ENC_BIG_ENDIAN);
+
+    proto_tree_add_item(pagp_tree, hf_pagp_partner_group_capability, tvb,
+                        PAGP_PARTNER_GROUP_CAPABILITY, 4, ENC_BIG_ENDIAN);
+
+    proto_tree_add_item(pagp_tree, hf_pagp_partner_group_ifindex, tvb,
+                        PAGP_PARTNER_GROUP_IFINDEX, 4, ENC_BIG_ENDIAN);
+
+    proto_tree_add_item(pagp_tree, hf_pagp_partner_count, tvb,
+                        PAGP_PARTNER_COUNT, 2, ENC_BIG_ENDIAN);
+
+    num_tlvs = tvb_get_ntohs(tvb, PAGP_NUM_TLVS);
+    proto_tree_add_uint(pagp_tree, hf_pagp_num_tlvs, tvb,
+                        PAGP_NUM_TLVS, 2, num_tlvs);
+
+    /* dump TLV entries */
+
+    for ( ii = 0; ii < num_tlvs; ii++ ) {
+
+        tlv = tvb_get_ntohs(tvb, offset);
+        len = tvb_get_ntohs(tvb, offset + 2);
+
+        tlv_tree = proto_tree_add_subtree_format(pagp_tree, tvb, offset, len,
+                                                 ett_pagp_tlvs, NULL, "TLV Entry #%d", ii+1);
+
+        proto_tree_add_uint(tlv_tree, hf_pagp_tlv, tvb, offset, 2, tlv);
+        len_item = proto_tree_add_uint(tlv_tree, hf_pagp_tlv_length, tvb, offset+2, 2, len);
+        if ( len == 0 ) {
+            expert_add_info_format(pinfo, len_item, &ei_pagp_tlv_length,
+                                   "Unknown data - TLV len=0");
+            return offset;
+        }
+        if ( tvb_reported_length_remaining(tvb, offset) < len ) {
+            expert_add_info_format(pinfo, len_item, &ei_pagp_tlv_length,
+                                   "TLV length too large");
+            return offset;
+        }
+
+        switch (tlv) {
+            case PAGP_TLV_DEVICE_NAME:
+                proto_tree_add_item(tlv_tree, hf_pagp_tlv_device_name,
+                                      tvb, offset+4, len-4, ENC_NA|ENC_ASCII);
+                break;
+            case PAGP_TLV_PORT_NAME:
+                proto_tree_add_item(tlv_tree, hf_pagp_tlv_port_name,
+                                      tvb, offset+4, len-4, ENC_NA|ENC_ASCII);
+                break;
+            case PAGP_TLV_AGPORT_MAC:
+                proto_tree_add_item(tlv_tree, hf_pagp_tlv_agport_mac,
+                                    tvb, offset+4, 6, ENC_NA);
+                break;
+            case PAGP_TLV_RESERVED:
+                break;
+        }
+
+        offset += len;
+
+    }
+    return tvb_captured_length(tvb);
+}
+
+
+/* Register the protocol with Wireshark */
+
+void
+proto_register_pagp(void)
+{
+/* Setup list of header fields */
+
+    static hf_register_info hf[] = {
+
+        { &hf_pagp_version_number,
+          { "Version",              "pagp.version",
+            FT_UINT8,       BASE_HEX,       VALS(pdu_vers), 0x0,
+            "Identifies the PAgP PDU version: 1 = Info, 2 = Flush", HFILL }},
+
+        { &hf_pagp_flags,
+          { "Flags",                "pagp.flags",
+            FT_UINT8,       BASE_HEX,       NULL,   0x0,
+            "Information flags", HFILL }},
+
+        { &hf_pagp_flags_slow_hello,
+          { "Slow Hello",           "pagp.flags.slowhello",
+            FT_BOOLEAN,     8,      TFS(&tfs_yes_no), PAGP_FLAGS_SLOW_HELLO,
+            "1 = using Slow Hello, 0 = Slow Hello disabled", HFILL }},
+
+        { &hf_pagp_flags_auto_mode,
+          { "Auto Mode",            "pagp.flags.automode",
+            FT_BOOLEAN,     8,      TFS(&automode), PAGP_FLAGS_AUTO_MODE,
+            "1 = Auto Mode enabled, 0 = Desirable Mode", HFILL }},
+
+        { &hf_pagp_flags_consistent_state,
+          { "Consistent State",     "pagp.flags.state",
+            FT_BOOLEAN,     8,      NULL,   PAGP_FLAGS_CONSISTENT_STATE,
+            "1 = Consistent State, 0 = Not Ready", HFILL }},
+
+        { &hf_pagp_local_device_id,
+          { "Local Device ID",      "pagp.localdevid",
+            FT_ETHER,       BASE_NONE,      NULL,   0x0,
+            NULL, HFILL }},
+
+        { &hf_pagp_local_learn_cap,
+          { "Local Learn Capability",       "pagp.localearncap",
+            FT_UINT8,       BASE_HEX,       VALS(learn_cap),        0x0,
+            NULL, HFILL }},
+
+        { &hf_pagp_local_port_priority,
+          { "Local Port Hot Standby Priority",      "pagp.localportpri",
+            FT_UINT8,       BASE_DEC,       NULL,   0x0,
+            "The local hot standby priority assigned to this port", HFILL }},
+
+        { &hf_pagp_local_sent_port_ifindex,
+          { "Local Sent Port ifindex",      "pagp.localsentportifindex",
+            FT_UINT32,      BASE_DEC,       NULL,   0x0,
+            "The interface index of the local port used to send PDU", HFILL }},
+
+        { &hf_pagp_local_group_capability,
+          { "Local Group Capability",       "pagp.localgroupcap",
+            FT_UINT32,      BASE_HEX,       NULL,   0x0,
+            "The local group capability", HFILL }},
+
+        { &hf_pagp_local_group_ifindex,
+          { "Local Group ifindex",          "pagp.localgroupifindex",
+            FT_UINT32,      BASE_DEC,       NULL,   0x0,
+            "The local group interface index", HFILL }},
+
+        { &hf_pagp_partner_device_id,
+          { "Partner Device ID",            "pagp.partnerdevid",
+            FT_ETHER,       BASE_NONE,      NULL,   0x0,
+            "Remote Device ID (MAC)", HFILL }},
+
+        { &hf_pagp_partner_learn_cap,
+          { "Partner Learn Capability",     "pagp.partnerlearncap",
+            FT_UINT8,       BASE_HEX,       VALS(learn_cap),        0x0,
+            "Remote learn capability", HFILL }},
+
+        { &hf_pagp_partner_port_priority,
+          { "Partner Port Hot Standby Priority",    "pagp.partnerportpri",
+            FT_UINT8,       BASE_DEC,       NULL,   0x0,
+            "Remote port priority", HFILL }},
+
+        { &hf_pagp_partner_sent_port_ifindex,
+          { "Partner Sent Port ifindex",    "pagp.partnersentportifindex",
+            FT_UINT32,      BASE_DEC,       NULL,   0x0,
+            "Remote port interface index sent", HFILL }},
+
+        { &hf_pagp_partner_group_capability,
+          { "Partner Group Capability",     "pagp.partnergroupcap",
+            FT_UINT32,      BASE_HEX,       NULL,   0x0,
+            "Remote group capability", HFILL }},
+
+        { &hf_pagp_partner_group_ifindex,
+          { "Partner Group ifindex",        "pagp.partnergroupifindex",
+            FT_UINT32,      BASE_DEC,       NULL,   0x0,
+            "Remote group interface index", HFILL }},
+
+        { &hf_pagp_partner_count,
+          { "Partner Count",                "pagp.partnercount",
+            FT_UINT16,      BASE_DEC,       NULL,   0x0,
+            NULL, HFILL }},
+
+        { &hf_pagp_num_tlvs,
+          { "Number of TLVs",               "pagp.numtlvs",
+            FT_UINT16,      BASE_DEC,       NULL,   0x0,
+            "Number of TLVs following", HFILL }},
+
+        { &hf_pagp_tlv,
+          { "Type",         "pagp.tlv",
+            FT_UINT16,      BASE_DEC,       VALS(tlv_types),        0x0,
+            "Type/Length/Value", HFILL }},
+
+        { &hf_pagp_tlv_length,
+          { "Length",               "pagp.tlv_length",
+            FT_UINT16,      BASE_DEC,       NULL,   0x0,
+            NULL, HFILL }},
+
+        { &hf_pagp_tlv_device_name,
+          { "Device Name",          "pagp.tlvdevname",
+            FT_STRING,      BASE_NONE,      NULL,   0x0,
+            "sysName of device", HFILL }},
+
+        { &hf_pagp_tlv_port_name,
+          { "Physical Port Name",           "pagp.tlvportname",
+            FT_STRING,      BASE_NONE,      NULL,   0x0,
+            "Name of port used to send PDU", HFILL }},
+
+        { &hf_pagp_tlv_agport_mac,
+          { "Agport MAC Address",           "pagp.tlvagportmac",
+            FT_ETHER,       BASE_NONE,      NULL,   0x0,
+            "Source MAC on frames for this aggregate", HFILL }},
+
+        { &hf_pagp_flush_local_device_id,
+          { "Flush Local Device ID",        "pagp.flushlocaldevid",
+            FT_ETHER,       BASE_NONE,      NULL,   0x0,
+            NULL, HFILL }},
+
+        { &hf_pagp_flush_partner_device_id,
+          { "Flush Partner Device ID",      "pagp.flushpartnerdevid",
+            FT_ETHER,       BASE_NONE,      NULL,   0x0,
+            "Flush remote device ID", HFILL }},
+
+        { &hf_pagp_flush_transaction_id,
+          { "Transaction ID",               "pagp.transid",
+            FT_UINT32,      BASE_HEX,       NULL,   0x0,
+            "Flush transaction ID", HFILL }},
+
+    };
+
+    /* Setup protocol subtree array */
+
+    static gint *ett[] = {
+        &ett_pagp,
+        &ett_pagp_flags,
+        &ett_pagp_tlvs,
+    };
+
+    static ei_register_info ei[] = {
+        { &ei_pagp_tlv_length, { "pagp.tlv_length.invalid", PI_PROTOCOL, PI_WARN, "Invalid TLV length", EXPFILL }},
+    };
+    expert_module_t* expert_pagp;
+
+    /* Register the protocol name and description */
+
+    proto_pagp = proto_register_protocol("Port Aggregation Protocol", "PAGP", "pagp");
+
+    /* Required function calls to register the header fields and subtrees used */
+
+    proto_register_field_array(proto_pagp, hf, array_length(hf));
+    proto_register_subtree_array(ett, array_length(ett));
+    expert_pagp = expert_register_protocol(proto_pagp);
+    expert_register_field_array(expert_pagp, ei, array_length(ei));
+    pagp_handle = register_dissector("pagp", dissect_pagp, proto_pagp);
+}
+
+
+void
+proto_reg_handoff_pagp(void)
+{
+    dissector_add_uint("llc.cisco_pid", CISCO_PID_PAGP, pagp_handle);
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */