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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:34:10 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:34:10 +0000
commite4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc (patch)
tree68cb5ef9081156392f1dd62a00c6ccc1451b93df /epan/dissectors/packet-docsis-vendor.c
parentInitial commit. (diff)
downloadwireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.tar.xz
wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.zip
Adding upstream version 4.2.2.upstream/4.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'epan/dissectors/packet-docsis-vendor.c')
-rw-r--r--epan/dissectors/packet-docsis-vendor.c887
1 files changed, 887 insertions, 0 deletions
diff --git a/epan/dissectors/packet-docsis-vendor.c b/epan/dissectors/packet-docsis-vendor.c
new file mode 100644
index 00000000..52ca798d
--- /dev/null
+++ b/epan/dissectors/packet-docsis-vendor.c
@@ -0,0 +1,887 @@
+/* packet-vendor.c
+ * Routines for Vendor Specific Encodings dissection
+ * Copyright 2002, Anand V. Narwani <anand[AT]narwani.org>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+
+/* Notes to Adding dissectors for Vendor specific TLVs:
+ * 1. Create a dissect_<vendorname> function with the following prototype:
+ * dissect_foovendor(tvbuff_t *tvb, proto_tree *tree, gint vsif_len)
+ * 2. vsif_len will be the *entire* length of the vsif TLV (including the
+ * Vendor ID TLV, which is 5 bytes long).
+ * 3. Create a new 'case' statement in dissect_vsif, for your specific Vendor
+ * ID.
+ * 4. In that 'case' statement you will make the following calls:
+ * (assume for this example that your vendor ID is 0x000054)
+ * #define VENDOR_FOOVENDOR 0x00054
+ * case VENDOR_FOOVENDOR:
+ * proto_item_append_text (it, " (foo vendor)");
+ * dissect_foovendor (tvb, vsif_tree, vsif_len);
+ * break;
+ * 5. Please see dissect_cisco for an example of how to do this.
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include <epan/expert.h>
+
+/* Define Vendor ID's here */
+#define VENDOR_CISCO 0x00000C
+#define VENDOR_GENERAL 0xFFFFFF
+
+void proto_register_docsis_vsif(void);
+void proto_reg_handoff_docsis_vsif(void);
+
+/* Initialize the protocol and registered fields */
+static int proto_docsis_vsif = -1;
+static int hf_docsis_vsif_vendorid = -1;
+static int hf_docsis_vsif_vendor_unknown = -1;
+static int hf_docsis_vsif_cisco_numphones = -1;
+/* static int hf_docsis_vsif_cisco_ipprec = -1; */
+static int hf_docsis_vsif_cisco_ipprec_val = -1;
+static int hf_docsis_vsif_cisco_ipprec_bw = -1;
+static int hf_docsis_vsif_cisco_config_file = -1;
+
+static int hf_docsis_vsif_gex_loadbal_policy_id = -1;
+static int hf_docsis_vsif_gex_loadbal_priority = -1;
+static int hf_docsis_vsif_gex_loadbal_group_id = -1;
+static int hf_docsis_vsif_gex_ranging_class_id_extension = -1;
+static int hf_docsis_vsif_gex_l2vpn_encoding = -1;
+static int hf_docsis_vsif_gex_ecm = -1;
+static int hf_docsis_vsif_gex_sav = -1;
+static int hf_docsis_vsif_gex_cmam = -1;
+static int hf_docsis_vsif_gex_imja = -1;
+static int hf_docsis_vsif_gex_service_type_identifier = -1;
+
+static int hf_docsis_vsif_gex_ecm_extended_cmts_mic_hmac_type = -1;
+static int hf_docsis_vsif_gex_ecm_extended_cmts_mic_bitmap = -1;
+static int hf_docsis_vsif_gex_ecm_explicit_extended_cmts_mic_digest_subtype = -1;
+
+static int hf_docsis_vsif_gex_sav_group_name = -1;
+static int hf_docsis_vsif_gex_sav_static_prefix_rule = -1;
+
+static int hf_docsis_vsif_gex_sav_static_prefix_addressv4 = -1;
+static int hf_docsis_vsif_gex_sav_static_prefix_addressv6 = -1;
+static int hf_docsis_vsif_gex_sav_static_prefix_length = -1;
+
+static int hf_docsis_vsif_gex_cmam_cm_required_downstream_attribute_mask = -1;
+static int hf_docsis_vsif_gex_cmam_cm_forbidden_downstream_attribute_mask = -1;
+static int hf_docsis_vsif_gex_cmam_cm_required_upstream_attribute_mask = -1;
+static int hf_docsis_vsif_gex_cmam_cm_forbidden_upstream_attribute_mask = -1;
+
+static int hf_docsis_vsif_gex_imja_ip_multicast_profile_name = -1;
+static int hf_docsis_vsif_gex_imja_ssr = -1;
+static int hf_docsis_vsif_gex_imja_maximum_multicast_sessions = -1;
+
+static int hf_docsis_vsif_gex_imja_ssr_rule_priority = -1;
+static int hf_docsis_vsif_gex_imja_ssr_authorization_action = -1;
+static int hf_docsis_vsif_gex_imja_ssr_source_prefix_addressv4 = -1;
+static int hf_docsis_vsif_gex_imja_ssr_source_prefix_addressv6 = -1;
+static int hf_docsis_vsif_gex_imja_ssr_source_prefix_length = -1;
+static int hf_docsis_vsif_gex_imja_ssr_group_prefix_addressv4 = -1;
+static int hf_docsis_vsif_gex_imja_ssr_group_prefix_addressv6 = -1;
+static int hf_docsis_vsif_gex_imja_ssr_group_prefix_length = -1;
+
+static int hf_docsis_vsif_tlv_unknown = -1;
+
+
+/* Initialize the subtree pointers */
+static gint ett_docsis_vsif = -1;
+static gint ett_docsis_vsif_ipprec = -1;
+static gint ett_docsis_vsif_gex_ecm = -1;
+static gint ett_docsis_vsif_gex_sav = -1;
+static gint ett_docsis_vsif_gex_sav_spr = -1;
+static gint ett_docsis_vsif_gex_cmam = -1;
+static gint ett_docsis_vsif_gex_imja = -1;
+static gint ett_docsis_vsif_gex_imja_ssr = -1;
+
+
+static expert_field ei_docsis_vsif_tlvlen_bad = EI_INIT;
+static expert_field ei_docsis_vsif_tlvtype_unknown = EI_INIT;
+
+static const value_string vendorid_vals[] = {
+ {VENDOR_CISCO, "Cisco Systems, Inc."},
+ {VENDOR_GENERAL, "General Extension Information"},
+ {0, NULL},
+};
+
+static const value_string hmac_vals[] = {
+ {1, "MD5 HMAC [RFC 2104]"},
+ {2, "MMH16-sigma-n HMAC [DOCSIS SECv3.0]"},
+ {43, "Vendor Specific"},
+ {0, NULL},
+};
+
+static const value_string authorization_action_vals[] = {
+ {0, "permit"},
+ {1, "deny"},
+ {0, NULL},
+};
+
+
+/* Dissector for Cisco Vendor Specific TLVs */
+
+#define NUM_PHONES 0x0a
+#define IOS_CONFIG_FILE 0x80
+#define IP_PREC 0x0b
+#define IP_PREC_VAL 0x01
+#define IP_PREC_BW 0x02
+
+static void dissect_general_extension_information (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree,
+ gint vsif_len);
+
+
+static void
+dissect_cisco (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, gint vsif_len)
+{
+ /* Start at pos = 5, since tvb includes the Vendor ID field */
+ int pos = 5;
+ guint8 type, length;
+ proto_tree *ipprec_tree;
+ proto_item *ipprec_item;
+ int templen;
+
+ while (pos < vsif_len)
+ {
+ /* Extract the type and length Fields from the TLV */
+ type = tvb_get_guint8 (tvb, pos++);
+ length = tvb_get_guint8 (tvb, pos++);
+ switch (type)
+ {
+ case NUM_PHONES:
+ proto_tree_add_item (tree, hf_docsis_vsif_cisco_numphones, tvb,
+ pos, length, ENC_BIG_ENDIAN);
+ break;
+ case IP_PREC:
+ ipprec_tree =
+ proto_tree_add_subtree(tree, tvb, pos, length, ett_docsis_vsif_ipprec, &ipprec_item, "IP Precedence");
+ /* Handle Sub-TLVs in IP Precedence */
+ templen = pos + length;
+ while (pos < templen)
+ {
+ type = tvb_get_guint8 (tvb, pos++);
+ length = tvb_get_guint8 (tvb, pos++);
+ switch (type)
+ {
+ case IP_PREC_VAL:
+ if (length == 1)
+ {
+ proto_tree_add_item (ipprec_tree,
+ hf_docsis_vsif_cisco_ipprec_val, tvb,
+ pos, length, ENC_BIG_ENDIAN);
+ }
+ else
+ {
+ expert_add_info_format(pinfo, ipprec_item, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ break;
+ case IP_PREC_BW:
+ if (length != 4)
+ {
+ proto_tree_add_item (ipprec_tree,
+ hf_docsis_vsif_cisco_ipprec_bw, tvb,
+ pos, length, ENC_BIG_ENDIAN);
+ }
+ else
+ {
+ expert_add_info_format(pinfo, ipprec_item, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ break;
+ default:
+ expert_add_info_format(pinfo, ipprec_item, &ei_docsis_vsif_tlvtype_unknown, "Unknown TLV: %u", type);
+ }
+ pos += length;
+ }
+ break;
+ case IOS_CONFIG_FILE:
+ proto_tree_add_item (tree, hf_docsis_vsif_cisco_config_file, tvb,
+ pos, length, ENC_ASCII);
+ }
+ pos += length;
+ }
+}
+
+/* Dissection */
+static int
+dissect_vsif (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, void* data _U_)
+{
+ proto_item *it;
+ proto_tree *vsif_tree;
+ guint8 type;
+ guint8 length;
+ guint32 value;
+ gint vsif_len;
+
+ /* get the reported length of the VSIF TLV */
+ vsif_len = tvb_reported_length_remaining (tvb, 0);
+
+ it = proto_tree_add_protocol_format (tree, proto_docsis_vsif, tvb, 0, -1,
+ "VSIF Encodings");
+ vsif_tree = proto_item_add_subtree (it, ett_docsis_vsif);
+ proto_tree_add_item_ret_uint(vsif_tree, hf_docsis_vsif_vendorid, tvb, 2, 3, ENC_BIG_ENDIAN, &value);
+
+ /* The first TLV in the VSIF encodings must be type 0x08 (Vendor ID) and
+ * length 3.
+ */
+ type = tvb_get_guint8 (tvb, 0);
+ if (type != 0x08)
+ expert_add_info_format(pinfo, it, &ei_docsis_vsif_tlvtype_unknown, "Unknown TLV: %u", type);
+
+ length = tvb_get_guint8 (tvb, 1);
+ if (length != 3)
+ expert_add_info_format(pinfo, it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+
+ /* switch on the Vendor ID */
+ switch (value)
+ {
+ case VENDOR_CISCO:
+ proto_item_append_text (it, " (Cisco)");
+ dissect_cisco (tvb, pinfo, vsif_tree, vsif_len);
+ break;
+ case VENDOR_GENERAL:
+ proto_item_append_text (it, " (General Extension Information)");
+ dissect_general_extension_information (tvb, pinfo, vsif_tree, vsif_len);
+ break;
+ default:
+ proto_item_append_text (it, " (Unknown)");
+ proto_tree_add_item (vsif_tree, hf_docsis_vsif_vendor_unknown, tvb,
+ 0, -1, ENC_NA);
+ break;
+ }
+
+ return tvb_captured_length(tvb);
+}
+
+
+#define GEX_ECM_EXTENDED_CMTS_MIC_HMAC_TYPE 1
+#define GEX_ECM_EXTENDED_CMTS_MIC_BITMAP 2
+#define GEX_ECM_EXPLICIT_EXTENDED_CMTS_MIC_DIGEST_SUBTYPE 3
+
+static void
+dissect_extended_cmts_mic(tvbuff_t * tvb, proto_tree *tree, int start, guint16 len)
+{
+ proto_item *ecm_it;
+ proto_tree *ecm_tree;
+ guint8 type, length;
+ int pos = start;
+
+ ecm_it = proto_tree_add_item (tree, hf_docsis_vsif_gex_ecm, tvb, start, len, ENC_NA);
+ ecm_tree = proto_item_add_subtree(ecm_it, ett_docsis_vsif_gex_ecm);
+
+ while (pos < (start + len))
+ {
+ type = tvb_get_guint8 (tvb, pos++);
+ length = tvb_get_guint8 (tvb, pos++);
+ switch (type)
+ {
+ case GEX_ECM_EXTENDED_CMTS_MIC_HMAC_TYPE:
+ proto_tree_add_item (ecm_tree, hf_docsis_vsif_gex_ecm_extended_cmts_mic_hmac_type, tvb, pos, length, ENC_BIG_ENDIAN);
+ break;
+ case GEX_ECM_EXTENDED_CMTS_MIC_BITMAP:
+ proto_tree_add_item (ecm_tree, hf_docsis_vsif_gex_ecm_extended_cmts_mic_bitmap, tvb, pos, length, ENC_NA);
+ break;
+ case GEX_ECM_EXPLICIT_EXTENDED_CMTS_MIC_DIGEST_SUBTYPE:
+ proto_tree_add_item (ecm_tree, hf_docsis_vsif_gex_ecm_explicit_extended_cmts_mic_digest_subtype, tvb, pos, length, ENC_NA);
+ break;
+ default:
+ proto_tree_add_item (ecm_tree, hf_docsis_vsif_tlv_unknown, tvb, pos, length, ENC_NA);
+ break;
+ } /* switch */
+ pos += length;
+ } /* while */
+}
+
+#define GEX_SAV_STATIC_PREFIX_ADDRESS 1
+#define GEX_SAV_STATIC_PREFIX_LENGTH 2
+
+static void
+dissect_sav_static_prefix_rule(tvbuff_t * tvb, packet_info * pinfo, proto_tree *tree, int start, guint16 len)
+{
+ proto_item *sav_spr_it;
+ proto_tree *sav_spr_tree;
+ guint8 type, length;
+ int pos = start;
+
+ sav_spr_it = proto_tree_add_item (tree, hf_docsis_vsif_gex_sav_static_prefix_rule, tvb, start, len, ENC_NA);
+ sav_spr_tree = proto_item_add_subtree(sav_spr_it, ett_docsis_vsif_gex_sav_spr);
+
+ while (pos < (start + len))
+ {
+ type = tvb_get_guint8 (tvb, pos++);
+ length = tvb_get_guint8 (tvb, pos++);
+ switch (type)
+ {
+ case GEX_SAV_STATIC_PREFIX_ADDRESS:
+ if (length == 4) {
+ proto_tree_add_item (sav_spr_tree, hf_docsis_vsif_gex_sav_static_prefix_addressv4, tvb, pos, length, ENC_BIG_ENDIAN);
+ } else if (length == 6) {
+ proto_tree_add_item (sav_spr_tree, hf_docsis_vsif_gex_sav_static_prefix_addressv6, tvb, pos, length, ENC_NA);
+ } else {
+ expert_add_info_format(pinfo, sav_spr_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ break;
+ case GEX_SAV_STATIC_PREFIX_LENGTH:
+ if (length == 1) {
+ proto_tree_add_item (sav_spr_tree, hf_docsis_vsif_gex_sav_static_prefix_length, tvb, pos, length, ENC_BIG_ENDIAN);
+ } else {
+ expert_add_info_format(pinfo, sav_spr_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ break;
+ default:
+ proto_tree_add_item (sav_spr_tree, hf_docsis_vsif_tlv_unknown, tvb, pos, length, ENC_NA);
+ break;
+ } /* switch */
+ pos += length;
+ } /* while */
+}
+
+
+
+#define GEX_SAV_GROUP_NAME 1
+#define GEX_SAV_STATIC_PREFIX_RULE 2
+
+
+static void
+dissect_sav(tvbuff_t * tvb, packet_info * pinfo, proto_tree *tree, int start, guint16 len)
+{
+ proto_item *sav_it;
+ proto_tree *sav_tree;
+ guint8 type, length;
+ int pos = start;
+
+ sav_it = proto_tree_add_item (tree, hf_docsis_vsif_gex_sav, tvb, start, len, ENC_NA);
+ sav_tree = proto_item_add_subtree(sav_it, ett_docsis_vsif_gex_sav);
+
+ while (pos < (start + len))
+ {
+ type = tvb_get_guint8 (tvb, pos++);
+ length = tvb_get_guint8 (tvb, pos++);
+ switch (type)
+ {
+ case GEX_SAV_GROUP_NAME:
+ proto_tree_add_item (sav_tree, hf_docsis_vsif_gex_sav_group_name, tvb, pos, length, ENC_ASCII);
+ break;
+ case GEX_SAV_STATIC_PREFIX_RULE:
+ dissect_sav_static_prefix_rule(tvb, pinfo, sav_tree, pos, length);
+ break;
+ default:
+ proto_tree_add_item (sav_tree, hf_docsis_vsif_tlv_unknown, tvb, pos, length, ENC_NA);
+ break;
+ } /* switch */
+ pos += length;
+ } /* while */
+}
+
+
+#define GEX_CM_REQUIRED_DOWNSTREAM_ATTRIBUTE_MASK 1
+#define GEX_CM_FORBIDDEN_DOWNSTREAM_ATTRIBUTE_MASK 2
+#define GEX_CM_REQUIRED_UPSTREAM_ATTRIBUTE_MASK 3
+#define GEX_CM_FORBIDDEN_UPSTREAM_ATTRIBUTE_MASK 4
+
+static void
+dissect_cable_modem_attribute_masks(tvbuff_t * tvb, packet_info * pinfo, proto_tree *tree, int start, guint16 len)
+{
+ proto_item *cmam_it;
+ proto_tree *cmam_tree;
+ guint8 type, length;
+ int pos = start;
+
+ cmam_it = proto_tree_add_item (tree, hf_docsis_vsif_gex_cmam, tvb, start, len, ENC_NA);
+ cmam_tree = proto_item_add_subtree(cmam_it, ett_docsis_vsif_gex_cmam);
+
+ while (pos < (start + len))
+ {
+ type = tvb_get_guint8 (tvb, pos++);
+ length = tvb_get_guint8 (tvb, pos++);
+ switch (type)
+ {
+ case GEX_CM_REQUIRED_DOWNSTREAM_ATTRIBUTE_MASK:
+ if (length != 4) {
+ expert_add_info_format(pinfo, cmam_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ proto_tree_add_item (cmam_tree, hf_docsis_vsif_gex_cmam_cm_required_downstream_attribute_mask, tvb, pos, length, ENC_NA);
+ break;
+ case GEX_CM_FORBIDDEN_DOWNSTREAM_ATTRIBUTE_MASK:
+ if (length != 4) {
+ expert_add_info_format(pinfo, cmam_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ proto_tree_add_item (cmam_tree, hf_docsis_vsif_gex_cmam_cm_forbidden_downstream_attribute_mask, tvb, pos, length, ENC_NA);
+ break;
+ case GEX_CM_REQUIRED_UPSTREAM_ATTRIBUTE_MASK:
+ if (length != 4) {
+ expert_add_info_format(pinfo, cmam_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ proto_tree_add_item (cmam_tree, hf_docsis_vsif_gex_cmam_cm_required_upstream_attribute_mask, tvb, pos, length, ENC_NA);
+ break;
+ case GEX_CM_FORBIDDEN_UPSTREAM_ATTRIBUTE_MASK:
+ if (length != 4) {
+ expert_add_info_format(pinfo, cmam_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ proto_tree_add_item (cmam_tree, hf_docsis_vsif_gex_cmam_cm_forbidden_upstream_attribute_mask, tvb, pos, length, ENC_NA);
+ break;
+ default: proto_tree_add_item (cmam_tree, hf_docsis_vsif_tlv_unknown, tvb, pos, length, ENC_NA);
+ } /* switch */
+ pos += length;
+ } /* while */
+}
+
+
+#define GEX_IMJA_SSR_RULE_PRIORITY 1
+#define GEX_IMJA_SSR_AUTHORIZATION_ACTION 2
+#define GEX_IMJA_SSR_AUTHORIZATION_SOURCE_PREFIX_ADDRESS 3
+#define GEX_IMJA_SSR_AUTHORIZATION_SOURCE_PREFIX_LENGTH 4
+#define GEX_IMJA_SSR_AUTHORIZATION_GROUP_PREFIX_ADDRESS 5
+#define GEX_IMJA_SSR_AUTHORIZATION_GROUP_PREFIX_LENGTH 6
+
+
+static void
+dissect_ip_multicast_join_authorization_static_session_rule(tvbuff_t * tvb, packet_info * pinfo, proto_tree *tree, int start, guint16 len)
+{
+ proto_item *imja_ssr_it;
+ proto_tree *imja_ssr_tree;
+ guint8 type, length;
+ int pos = start;
+
+ imja_ssr_it = proto_tree_add_item (tree, hf_docsis_vsif_gex_imja_ssr, tvb, start, len, ENC_NA);
+ imja_ssr_tree = proto_item_add_subtree(imja_ssr_it, ett_docsis_vsif_gex_imja_ssr);
+
+ while (pos < (start + len))
+ {
+ type = tvb_get_guint8 (tvb, pos++);
+ length = tvb_get_guint8 (tvb, pos++);
+ switch (type)
+ {
+ case GEX_IMJA_SSR_RULE_PRIORITY:
+ if (length != 1) {
+ expert_add_info_format(pinfo, imja_ssr_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ proto_tree_add_item (imja_ssr_tree, hf_docsis_vsif_gex_imja_ssr_rule_priority, tvb, pos, length, ENC_BIG_ENDIAN);
+ break;
+ case GEX_IMJA_SSR_AUTHORIZATION_ACTION:
+ if (length != 1) {
+ expert_add_info_format(pinfo, imja_ssr_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ proto_tree_add_item (imja_ssr_tree, hf_docsis_vsif_gex_imja_ssr_authorization_action, tvb, pos, length, ENC_BIG_ENDIAN);
+ break;
+ case GEX_IMJA_SSR_AUTHORIZATION_SOURCE_PREFIX_ADDRESS:
+ if (length == 4) {
+ proto_tree_add_item (imja_ssr_tree, hf_docsis_vsif_gex_imja_ssr_source_prefix_addressv4, tvb, pos, length, ENC_BIG_ENDIAN);
+ } else if (length == 6) {
+ proto_tree_add_item (imja_ssr_tree, hf_docsis_vsif_gex_imja_ssr_source_prefix_addressv6, tvb, pos, length, ENC_NA);
+ } else {
+ expert_add_info_format(pinfo, imja_ssr_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ break;
+ case GEX_IMJA_SSR_AUTHORIZATION_SOURCE_PREFIX_LENGTH:
+ if (length != 1) {
+ expert_add_info_format(pinfo, imja_ssr_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ proto_tree_add_item (imja_ssr_tree, hf_docsis_vsif_gex_imja_ssr_source_prefix_length, tvb, pos, length, ENC_BIG_ENDIAN);
+ break;
+ case GEX_IMJA_SSR_AUTHORIZATION_GROUP_PREFIX_ADDRESS:
+ if (length == 4) {
+ proto_tree_add_item (imja_ssr_tree, hf_docsis_vsif_gex_imja_ssr_group_prefix_addressv4, tvb, pos, length, ENC_BIG_ENDIAN);
+ } else if (length == 6) {
+ proto_tree_add_item (imja_ssr_tree, hf_docsis_vsif_gex_imja_ssr_group_prefix_addressv6, tvb, pos, length, ENC_NA);
+ } else {
+ expert_add_info_format(pinfo, imja_ssr_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ break;
+ case GEX_IMJA_SSR_AUTHORIZATION_GROUP_PREFIX_LENGTH:
+ if (length != 1) {
+ expert_add_info_format(pinfo, imja_ssr_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ proto_tree_add_item (imja_ssr_tree, hf_docsis_vsif_gex_imja_ssr_group_prefix_length, tvb, pos, length, ENC_BIG_ENDIAN);
+ break;
+ default: proto_tree_add_item (imja_ssr_tree, hf_docsis_vsif_tlv_unknown, tvb, pos, length, ENC_NA);
+ } /* switch */
+ pos += length;
+ } /* while */
+}
+
+#define GEX_IMJA_IP_MULTICAST_PROFILE_NAME 1
+#define GEX_IMJA_IP_MULTICAST_PROFILE_JOIN_AUTHORIZATION_STATIC_SESSION_RULE 2
+#define GEX_IMJA_MAXIMUM_MULTICAST_SESSIONS 3
+
+
+static void
+dissect_ip_multicast_join_authorization(tvbuff_t * tvb, packet_info * pinfo, proto_tree *tree, int start, guint16 len)
+{
+ proto_item *imja_it;
+ proto_tree *imja_tree;
+ guint8 type, length;
+ int pos = start;
+
+ imja_it = proto_tree_add_item (tree, hf_docsis_vsif_gex_imja, tvb, start, len, ENC_NA);
+ imja_tree = proto_item_add_subtree(imja_it, ett_docsis_vsif_gex_imja);
+
+ while (pos < (start + len))
+ {
+ type = tvb_get_guint8 (tvb, pos++);
+ length = tvb_get_guint8 (tvb, pos++);
+ switch (type)
+ {
+ case GEX_IMJA_IP_MULTICAST_PROFILE_NAME:
+ if ((length < 1) || (length > 15)) {
+ expert_add_info_format(pinfo, imja_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ proto_tree_add_item (imja_tree, hf_docsis_vsif_gex_imja_ip_multicast_profile_name, tvb, pos, length, ENC_ASCII);
+ break;
+ case GEX_IMJA_IP_MULTICAST_PROFILE_JOIN_AUTHORIZATION_STATIC_SESSION_RULE:
+ dissect_ip_multicast_join_authorization_static_session_rule(tvb, pinfo, imja_tree, pos, length);
+ break;
+ case GEX_IMJA_MAXIMUM_MULTICAST_SESSIONS:
+ if (length != 2) {
+ expert_add_info_format(pinfo, imja_it, &ei_docsis_vsif_tlvlen_bad, "Wrong TLV length: %u", length);
+ }
+ proto_tree_add_item (imja_tree, hf_docsis_vsif_gex_imja_maximum_multicast_sessions, tvb, pos, length, ENC_BIG_ENDIAN);
+ break;
+ default: proto_tree_add_item (imja_tree, hf_docsis_vsif_tlv_unknown, tvb, pos, length, ENC_NA);
+ } /* switch */
+ pos += length;
+ } /* while */
+}
+
+
+
+/* Dissector for General Extension TLVs */
+
+#define GEX_CM_LOAD_BALANCING_POLICY_ID 1
+#define GEX_CM_LOAD_BALANCING_PRIORITY 2
+#define GEX_CM_LOAD_BALANCING_GROUP_ID 3
+#define GEX_CM_RANGING_CLASS_ID_EXTENSION 4
+#define GEX_L2VPN_ENCODING 5
+#define GEX_EXTENDED_CMTS_MIC_CONFIGURATION_SETTING 6
+#define GEX_EXTENDED_SAV 7
+#define GEX_CABLE_MODEM_ATTRIBUTE_MASKS 9
+#define GEX_IP_MULTICAST_JOIN_AUTHORIZATION 10
+#define GEX_SERVICE_TYPE_IDENTIFIER 11
+
+
+
+static void
+dissect_general_extension_information (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, gint vsif_len)
+{
+ /* Start at pos = 5, since tvb includes the Vendor ID field */
+ int pos = 5;
+ guint8 type, length;
+
+ while (pos < vsif_len)
+ {
+ /* Extract the type and length Fields from the TLV */
+ type = tvb_get_guint8 (tvb, pos++);
+ length = tvb_get_guint8 (tvb, pos++);
+ switch (type)
+ {
+ case GEX_CM_LOAD_BALANCING_POLICY_ID:
+ proto_tree_add_item (tree, hf_docsis_vsif_gex_loadbal_policy_id, tvb, pos, length, ENC_BIG_ENDIAN);
+ break;
+ case GEX_CM_LOAD_BALANCING_PRIORITY:
+ proto_tree_add_item (tree, hf_docsis_vsif_gex_loadbal_priority, tvb, pos, length, ENC_BIG_ENDIAN);
+ break;
+ case GEX_CM_LOAD_BALANCING_GROUP_ID:
+ proto_tree_add_item (tree, hf_docsis_vsif_gex_loadbal_group_id, tvb, pos, length, ENC_BIG_ENDIAN);
+ break;
+ case GEX_CM_RANGING_CLASS_ID_EXTENSION:
+ proto_tree_add_item (tree, hf_docsis_vsif_gex_ranging_class_id_extension, tvb, pos, length, ENC_BIG_ENDIAN);
+ break;
+ case GEX_L2VPN_ENCODING:
+ proto_tree_add_item (tree, hf_docsis_vsif_gex_l2vpn_encoding, tvb, pos, length, ENC_NA);
+ break;
+ case GEX_EXTENDED_CMTS_MIC_CONFIGURATION_SETTING:
+ dissect_extended_cmts_mic(tvb, tree, pos, length);
+ break;
+ case GEX_EXTENDED_SAV:
+ dissect_sav(tvb, pinfo, tree, pos, length);
+ break;
+ case GEX_CABLE_MODEM_ATTRIBUTE_MASKS:
+ dissect_cable_modem_attribute_masks(tvb, pinfo, tree, pos, length);
+ break;
+ case GEX_IP_MULTICAST_JOIN_AUTHORIZATION:
+ dissect_ip_multicast_join_authorization(tvb, pinfo, tree, pos, length);
+ break;
+ case GEX_SERVICE_TYPE_IDENTIFIER:
+ proto_tree_add_item (tree, hf_docsis_vsif_gex_service_type_identifier, tvb, pos, length, ENC_ASCII);
+ break;
+ default:
+ proto_tree_add_item (tree, hf_docsis_vsif_tlv_unknown, tvb, pos, length, ENC_NA);
+ }
+ pos += length;
+ }
+}
+
+
+/* Register the protocol with Wireshark */
+void
+proto_register_docsis_vsif (void)
+{
+ static hf_register_info hf[] = {
+ {&hf_docsis_vsif_vendorid,
+ {"Vendor ID", "docsis_vsif.vendorid",
+ FT_UINT24, BASE_HEX, VALS(vendorid_vals), 0x0,
+ "Vendor Identifier", HFILL}
+ },
+ {&hf_docsis_vsif_vendor_unknown,
+ {"VSIF Encodings", "docsis_vsif.unknown",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "Unknown Vendor", HFILL}
+ },
+ {&hf_docsis_vsif_cisco_numphones,
+ {"Number of phone lines", "docsis_vsif.cisco.numphones",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL}
+ },
+#if 0
+ {&hf_docsis_vsif_cisco_ipprec,
+ {"IP Precedence Encodings", "docsis_vsif.cisco.ipprec",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ NULL, HFILL}
+ },
+#endif
+ {&hf_docsis_vsif_cisco_ipprec_val,
+ {"IP Precedence Value", "docsis_vsif.cisco.ipprec.value",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL}
+ },
+ {&hf_docsis_vsif_cisco_ipprec_bw,
+ {"IP Precedence Bandwidth", "docsis_vsif.cisco.ipprec.bw",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL}
+ },
+ {&hf_docsis_vsif_cisco_config_file,
+ {"IOS Config File", "docsis_vsif.cisco.iosfile",
+ FT_STRING, BASE_NONE, NULL, 0x0,
+ NULL, HFILL}
+ },
+ {&hf_docsis_vsif_gex_loadbal_policy_id,
+ {".1 CM Load Balancing Policy ID", "docsis_vsif.gex.loadbal_policyid",
+ FT_UINT32, BASE_DEC, NULL, 0x0,
+ "General Extension Information - CM Load Balancing Policy ID", HFILL}
+ },
+ {&hf_docsis_vsif_gex_loadbal_priority,
+ {".2 CM Load Balancing Priority", "docsis_vsif.gex.loadbal_priority",
+ FT_UINT32, BASE_DEC, NULL, 0x0,
+ "General Extension Information - CM Load Balancing Priority", HFILL}
+ },
+ {&hf_docsis_vsif_gex_loadbal_group_id,
+ {".3 CM Load Balancing Group ID", "docsis_vsif.gex.loadbal_group_id",
+ FT_UINT32, BASE_DEC, NULL, 0x0,
+ "General Extension Information - CM Load Balancing Group ID", HFILL}
+ },
+ {&hf_docsis_vsif_gex_ranging_class_id_extension,
+ {".4 CM Ranging Class ID Extension", "docsis_vsif.gex.ranging_class_id_extension",
+ FT_UINT32, BASE_DEC, NULL, 0x0,
+ "General Extension Information - CM Ranging Class ID Extension", HFILL}
+ },
+ {&hf_docsis_vsif_gex_l2vpn_encoding,
+ {".5 L2VPN Encoding", "docsis_vsif.gex.l2vpn_encoding",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - L2VPN Encoding", HFILL}
+ },
+ {&hf_docsis_vsif_gex_ecm,
+ {".6 Extended CMTS MIC Configuration Setting", "docsis_vsif.gex.extended_cmts_mic_configuration_setting",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - Extended CMTS MIC Configuration Setting", HFILL}
+ },
+ {&hf_docsis_vsif_gex_ecm_extended_cmts_mic_hmac_type,
+ {"..1 Extended CMTS MIC Hmac type", "docsis_vsif.gex.extended_cmts_mic_hmac_type",
+ FT_UINT8, BASE_DEC, VALS(hmac_vals), 0x0,
+ "General Extension Information - Extended CMTS MIC Hmac type", HFILL}
+ },
+ {&hf_docsis_vsif_gex_ecm_extended_cmts_mic_bitmap,
+ {"..2 Extended CMTS MIC Bitmap", "docsis_vsif.gex.extended_cmts_mic_bitmap",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - Extended CMTS MIC Bitmap", HFILL}
+ },
+ {&hf_docsis_vsif_gex_ecm_explicit_extended_cmts_mic_digest_subtype,
+ {"..3 Explicit Extended CMTS MIC Digest Subtype", "docsis_vsif.gex.extended_cmts_mic_digest_subtype",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - Explicit Extended CMTS MIC Digest Subtype", HFILL}
+ },
+ {&hf_docsis_vsif_gex_sav,
+ {".7 Source Address Verification (SAV) Authorization Encoding", "docsis_vsif.gex.sav",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - Source Address Verification (SAV) Authorization Encoding", HFILL}
+ },
+ {&hf_docsis_vsif_gex_sav_group_name,
+ {"..1 SAV Group Name", "docsis_vsif.gex.sav.sav_group_name",
+ FT_STRING, BASE_NONE, NULL, 0x0,
+ "General Extension Information - SAV - SAV Group Name", HFILL}
+ },
+ {&hf_docsis_vsif_gex_sav_static_prefix_rule,
+ {"..2 SAV Static Prefix Rule", "docsis_vsif.gex.sav.static_prefix_rule",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - SAV -Static Prefix Rule", HFILL}
+ },
+ {&hf_docsis_vsif_gex_sav_static_prefix_addressv4,
+ {"...1 SAV Static Prefix Address", "docsis_vsif.gex.sav.spr.static_prefix_address4",
+ FT_IPv4, BASE_NONE, NULL, 0x0,
+ "General Extension Information - SAV -Static Prefix Rule - Static Prefix Address", HFILL}
+ },
+ {&hf_docsis_vsif_gex_sav_static_prefix_addressv6,
+ {"...1 SAV Static Prefix Address", "docsis_vsif.gex.sav.spr.static_prefix_address6",
+ FT_IPv6, BASE_NONE, NULL, 0x0,
+ "General Extension Information - SAV -Static Prefix Rule - Static Prefix Address", HFILL}
+ },
+ {&hf_docsis_vsif_gex_sav_static_prefix_length,
+ {"...2 SAV Static Prefix Length", "docsis_vsif.gex.sav.spr.static_prefix_length",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ "General Extension Information - SAV -Static Prefix Rule - Static Prefix Length", HFILL}
+ },
+ {&hf_docsis_vsif_gex_cmam,
+ {".9 CM Attribute Mask", "docsis_vsif.gex.cmam",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - CM Attribute Mask", HFILL}
+ },
+ {&hf_docsis_vsif_gex_cmam_cm_required_downstream_attribute_mask,
+ {"..1 CM Required Downstream Attribute", "docsis_vsif.gex.cmam.cm_required_downstream_attribute",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - CM Attribute Mask - CM Required Downstream Attribute", HFILL}
+ },
+ {&hf_docsis_vsif_gex_cmam_cm_forbidden_downstream_attribute_mask,
+ {"..2 CM Forbidden Downstream Attribute", "docsis_vsif.gex.cmam.cm_forbidden_downstream_attribute",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - CM Attribute Mask - CM Forbidden Downstream Attribute", HFILL}
+ },
+ {&hf_docsis_vsif_gex_cmam_cm_required_upstream_attribute_mask,
+ {"..3 CM Required Upstream Attribute", "docsis_vsif.gex.cmam.cm_required_upstream_attribute",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - CM Attribute Mask - CM Required Upstream Attribute", HFILL}
+ },
+ {&hf_docsis_vsif_gex_cmam_cm_forbidden_upstream_attribute_mask,
+ {"..4 CM Forbidden Upstream Attribute", "docsis_vsif.gex.cmam.cm_forbidden_upstream_attribute",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - CM Attribute Mask - CM Forbidden Upstream Attribute", HFILL}
+ },
+ {&hf_docsis_vsif_gex_imja,
+ {".10 IP Multicast Join Authorization", "docsis_vsif.gex.imja",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - IP Multicast Join Authorization", HFILL}
+ },
+ {&hf_docsis_vsif_gex_imja_ip_multicast_profile_name,
+ {"..1 IP Multicast Profile Name", "docsis_vsif.gex.imja.ip_multicast_profile_name",
+ FT_STRING, BASE_NONE, NULL, 0x0,
+ "General Extension Information - IP Multicast Join Authorization - IP Multicast Profile Name", HFILL}
+ },
+ {&hf_docsis_vsif_gex_imja_ssr,
+ {"..2 IP Multicast Profile Join Authorization Static Session Rule", "docsis_vsif.gex.imja.ip_multicast_join_authorization_static_session_rule",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ "General Extension Information - IP Multicast Join Authorization - IP Multicast Profile Join Authorization Static Session Rule", HFILL}
+ },
+ {&hf_docsis_vsif_gex_imja_ssr_rule_priority,
+ {"...1 Rule Priority", "docsis_vsif.gex.imja.imja_ssr_rule_priority",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ "General Extension Information - IP Multicast Join Authorization - IP Multicast Profile Join Authorization Static Session Rule - Rule Priority", HFILL}
+ },
+ {&hf_docsis_vsif_gex_imja_ssr_authorization_action,
+ {"...2 Authorization Action", "docsis_vsif.gex.imja.imja_ssr_authorization_action",
+ FT_UINT8, BASE_DEC, VALS(authorization_action_vals), 0x0,
+ "General Extension Information - IP Multicast Join Authorization - IP Multicast Profile Join Authorization Static Session Rule - Rule Priority", HFILL}
+ },
+ {&hf_docsis_vsif_gex_imja_ssr_source_prefix_addressv4,
+ {"...3 Source Prefix Address", "docsis_vsif.gex.imja.imja_ssr_source_prefix_address4",
+ FT_IPv4, BASE_NONE, NULL, 0x0,
+ "General Extension Information - IP Multicast Join Authorization - IP Multicast Profile Join Authorization Static Session Rule - Source Prefix Address", HFILL}
+ },
+ {&hf_docsis_vsif_gex_imja_ssr_source_prefix_addressv6,
+ {"...3 Source Prefix Address", "docsis_vsif.gex.imja.imja_ssr_source_prefix_address6",
+ FT_IPv6, BASE_NONE, NULL, 0x0,
+ "General Extension Information - IP Multicast Join Authorization - IP Multicast Profile Join Authorization Static Session Rule - Source Prefix Address", HFILL}
+ },
+ {&hf_docsis_vsif_gex_imja_ssr_source_prefix_length,
+ {"...4 Source Prefix Length", "docsis_vsif.gex.imja.imja_ssr_source_prefix_length",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ "General Extension Information - IP Multicast Join Authorization - IP Multicast Profile Join Authorization Static Session Rule - Source Prefix Length", HFILL}
+ },
+ {&hf_docsis_vsif_gex_imja_ssr_group_prefix_addressv4,
+ {"...5 Group Prefix Address", "docsis_vsif.gex.imja.imja_ssr_group_prefix_address4",
+ FT_IPv4, BASE_NONE, NULL, 0x0,
+ "General Extension Information - IP Multicast Join Authorization - IP Multicast Profile Join Authorization Static Session Rule - Group Prefix Address", HFILL}
+ },
+ {&hf_docsis_vsif_gex_imja_ssr_group_prefix_addressv6,
+ {"...5 Group Prefix Address", "docsis_vsif.gex.imja.imja_ssr_group_prefix_address6",
+ FT_IPv6, BASE_NONE, NULL, 0x0,
+ "General Extension Information - IP Multicast Join Authorization - IP Multicast Profile Join Authorization Static Session Rule - Group Prefix Address", HFILL}
+ },
+ {&hf_docsis_vsif_gex_imja_ssr_group_prefix_length,
+ {"...6 Group Prefix Length", "docsis_vsif.gex.imja.imja_ssr_group_prefix_length",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ "General Extension Information - IP Multicast Join Authorization - IP Multicast Profile Join Authorization Static Session Rule - Group Prefix Length", HFILL}
+ },
+ {&hf_docsis_vsif_gex_imja_maximum_multicast_sessions,
+ {"..3 Maximum Multicast Sessions", "docsis_vsif.gex.imja.imja_maximum_multicast_sessions",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ "General Extension Information - IP Multicast Join Authorization - Maximum Multicast Sessions", HFILL}
+ },
+ {&hf_docsis_vsif_gex_service_type_identifier,
+ {".11 Service Type Identifier", "docsis_vsif.gex.service_type_identifier",
+ FT_STRING, BASE_NONE, NULL, 0x0,
+ "General Extension Information - Service Type Identifier", HFILL}
+ },
+ {&hf_docsis_vsif_tlv_unknown,
+ {"Unknown VSIF TLV", "docsis_vsif.unknown",
+ FT_BYTES, BASE_NONE, NULL, 0x0,
+ NULL, HFILL}
+ },
+ };
+
+ static gint *ett[] = {
+ &ett_docsis_vsif,
+ &ett_docsis_vsif_ipprec,
+ &ett_docsis_vsif_gex_ecm,
+ &ett_docsis_vsif_gex_sav,
+ &ett_docsis_vsif_gex_sav_spr,
+ &ett_docsis_vsif_gex_cmam,
+ &ett_docsis_vsif_gex_imja,
+ &ett_docsis_vsif_gex_imja_ssr
+ };
+
+ expert_module_t* expert_docsis_vsif;
+
+ static ei_register_info ei[] = {
+ {&ei_docsis_vsif_tlvlen_bad, { "docsis_vsif.tlvlenbad", PI_MALFORMED, PI_ERROR, "Bad TLV length", EXPFILL}},
+ {&ei_docsis_vsif_tlvtype_unknown, { "docsis_vsif.tlvtypeunknown", PI_PROTOCOL, PI_WARN, "Unknown TLV type", EXPFILL}},
+ };
+
+ proto_docsis_vsif =
+ proto_register_protocol ("DOCSIS Vendor Specific Encodings",
+ "DOCSIS VSIF", "docsis_vsif");
+
+ proto_register_field_array (proto_docsis_vsif, hf, array_length (hf));
+ proto_register_subtree_array (ett, array_length (ett));
+ expert_docsis_vsif = expert_register_protocol(proto_docsis_vsif);
+ expert_register_field_array(expert_docsis_vsif, ei, array_length(ei));
+
+ register_dissector ("docsis_vsif", dissect_vsif, proto_docsis_vsif);
+}
+
+void
+proto_reg_handoff_docsis_vsif (void)
+{
+#if 0
+ dissector_handle_t docsis_vsif_handle;
+
+ docsis_vsif_handle = find_dissector ("docsis_vsif");
+ dissector_add_uint ("docsis", 0xFD, docsis_vsif_handle);
+#endif
+}
+
+/*
+ * Editor modelines - https://www.wireshark.org/tools/modelines.html
+ *
+ * Local Variables:
+ * c-basic-offset: 2
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * ex: set shiftwidth=2 tabstop=8 expandtab:
+ * :indentSize=2:tabSize=8:noTabs=true:
+ */