[GSM MAP] Dissect Ext2-QoS-Subscribed, Ext3-QoS-Subscribed and

Ext4-QoS-Subscribed

Change-Id: Ic6a0f80d5f2339fd90284d1fddffe57b66c6771d
Reviewed-on: https://code.wireshark.org/review/23108
Petri-Dish: Anders Broman <a.broman58@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Anders Broman <a.broman58@gmail.com>

1 files changed, 284 insertions, 4 deletions

diff --git a/epan/dissectors/asn1/gsm_map/packet-gsm_map-template.c b/epan/dissectors/asn1/gsm_map/packet-gsm_map-template.c
index c8fd423354..d3617e45e3 100644
--- a/epan/dissectors/asn1/gsm_map/packet-gsm_map-template.c
+++ b/epan/dissectors/asn1/gsm_map/packet-gsm_map-template.c
@@ -150,6 +150,22 @@ static int hf_gsm_map_ericsson_locationInformation_lac = -1;
 static int hf_gsm_map_ericsson_locationInformation_ci = -1;
 static int hf_gsm_map_ericsson_locationInformation_sac = -1;
 static int hf_gsm_map_ussd_string = -1;
+static int hf_gsm_map_spare_bits = -1;
+static int hf_gsm_map_qos_signalling_ind = -1;
+static int hf_gsm_map_qos_source_stat_desc = - 1;
+static int hf_gsm_map_qos_max_bitrate_upl_ext = -1;
+static int hf_gsm_map_qos_max_bitrate_downl_ext = -1;
+static int hf_gsm_map_qos_guar_bitrate_upl_ext = -1;
+static int hf_gsm_map_qos_guar_bitrate_downl_ext = -1;
+/*
+static int hf_gsm_map_qos_max_bitrate_upl_ext2 = -1;
+static int hf_gsm_map_qos_max_bitrate_downl_ext2 = -1;
+static int hf_gsm_map_qos_guar_bitrate_upl_ext2 = -1;
+static int hf_gsm_map_qos_guar_bitrate_downl_ext2 = -1;
+*/
+static int hf_gsm_map_earp_pci = -1;
+static int hf_gsm_map_earp_pl = -1;
+static int hf_gsm_map_earp_pvi = -1;
 
 #include "packet-gsm_map-hf.c"
 
@@ -182,6 +198,8 @@ static gint ett_gsm_map_ericsson_locationInformation = -1;
 static gint ett_gsm_map_extension_data = -1;
 static gint ett_gsm_map_tbcd_digits = -1;
 static gint ett_gsm_map_ussd_string = -1;
+static gint ett_gsm_map_ext2_qos_subscribed = -1;
+static gint ett_gsm_map_ext3_qos_subscribed = -1;
 
 #include "packet-gsm_map-ett.c"
 
@@ -508,7 +526,7 @@ dissect_gsm_map_ext_qos_subscribed(tvbuff_t *tvb, packet_info *pinfo _U_, proto_
   */
   octet = tvb_get_guint8(tvb,offset);
   if (octet == 0 ){
-    proto_tree_add_uint_format_value(subtree, hf_gsm_map_guaranteed_max_brate_ulink, tvb, offset, 1, octet, "Reserved"  );
+    proto_tree_add_uint_format_value(subtree, hf_gsm_map_guaranteed_max_brate_ulink, tvb, offset, 1, octet, "Subscribed guaranteed bit rate for uplink/reserved");
   }else{
     proto_tree_add_uint(subtree, hf_gsm_map_guaranteed_max_brate_ulink, tvb, offset, 1, gsm_map_calc_bitrate(octet));
   }
@@ -519,13 +537,202 @@ dissect_gsm_map_ext_qos_subscribed(tvbuff_t *tvb, packet_info *pinfo _U_, proto_
   */
   octet = tvb_get_guint8(tvb,offset);
   if (octet == 0 ){
-    proto_tree_add_uint_format_value(subtree, hf_gsm_map_guaranteed_max_brate_dlink, tvb, offset, 1, octet, "Reserved"  );
+    proto_tree_add_uint_format_value(subtree, hf_gsm_map_guaranteed_max_brate_dlink, tvb, offset, 1, octet, "Subscribed guaranteed bit rate for downlink/reserved");
   }else{
     proto_tree_add_uint(subtree, hf_gsm_map_guaranteed_max_brate_dlink, tvb, offset, 1, gsm_map_calc_bitrate(octet));
   }
 
 }
 
+/*
+Ext2-QoS-Subscribed ::= OCTET STRING (SIZE (1..3))
+-- Octets 1-3 are coded according to 3GPP TS 24.008 [35] Quality of Service Octets 14-16.
+-- If Quality of Service information is structured with 14 octet length, then
+-- Octet 1 is coded according to 3GPP TS 24.008 [35] Quality of Service Octet 14.
+
+*/
+
+static const true_false_string gsm_map_qos_signalling_ind_value = {
+    "Optimised for signalling traffic",
+    "Not optimised for signalling traffic"
+};
+#if 0
+/* Helper function returning the main bitrates in kbps */
+static guint32
+qos_calc_bitrate(guint8 oct)
+{
+    if (oct <= 0x3f)
+        return oct;
+    if (oct <= 0x7f)
+        return 64 + (oct - 0x40) * 8;
+
+    return 576 + (oct - 0x80) * 64;
+}
+#endif
+/* Helper function returning the extended bitrates in kbps */
+static guint32
+qos_calc_ext_bitrate(guint8 oct)
+{
+    if (oct <= 0x4a)
+        return 8600 + oct * 100;
+    if (oct <= 0xba)
+        return 16000 + (oct - 0x4a) * 1000;
+
+    return 128000 + (oct - 0xba) * 2000;
+}
+#if 0
+static guint32
+qos_calc_ext2_bitrate(guint8 oct)
+{
+    if (oct <= 0x3d)
+        return (256 + oct * 4);
+    if (oct <= 0xa1)
+        return (500 + (oct - 0x3d) * 10);
+    if (oct <= 0xf6)
+        return (1500 + (oct - 0xa1) * 100);
+
+    return 10000;
+}
+#endif
+static void
+dissect_gsm_map_ext2_qos_subscribed(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree _U_, asn1_ctx_t *actx) {
+
+    int offset = 0;
+    proto_tree *subtree;
+    const gchar *str;
+    guint8 oct, tmp_oct;
+    guint32 temp32;
+    int length = tvb_reported_length(tvb);
+
+    subtree = proto_item_add_subtree(actx->created_item, ett_gsm_map_ext2_qos_subscribed);
+
+    /* Ocet 14 */
+    oct = tvb_get_guint8(tvb, offset);
+    proto_tree_add_bits_item(subtree, hf_gsm_map_spare_bits, tvb, (offset << 3), 3, ENC_BIG_ENDIAN);
+    proto_tree_add_item(subtree, hf_gsm_map_qos_signalling_ind, tvb, offset, 1, ENC_BIG_ENDIAN);
+
+    tmp_oct = oct & 7;
+    if (tmp_oct == 0x01)
+        str = "speech";
+    else
+        str = "unknown";
+
+    proto_tree_add_uint_format_value(subtree, hf_gsm_map_qos_source_stat_desc, tvb,
+        offset, 1, oct, "%s (%u)", str, tmp_oct);
+
+    offset += 1;
+    if (length == offset) {
+        return;
+    }
+
+    /* Octet 15 */
+    oct = tvb_get_guint8(tvb, offset);
+
+    if (oct == 0x00)
+        str = "Use the value indicated by the Maximum bit rate for downlink";
+    else
+    {
+        temp32 = qos_calc_ext_bitrate(oct);
+        if (temp32 % 1000 == 0)
+            str = wmem_strdup_printf(wmem_packet_scope(), "%u Mbps", temp32 / 1000);
+        else
+            str = wmem_strdup_printf(wmem_packet_scope(), "%u kbps", temp32);
+    }
+    proto_tree_add_uint_format_value(subtree, hf_gsm_map_qos_max_bitrate_downl_ext, tvb,
+        offset, 1, oct, "%s (%u)", str, oct);
+
+    offset += 1;
+    if (length == offset) {
+        return;
+    }
+
+    /* Octet 16 */
+    oct = tvb_get_guint8(tvb, offset);
+
+    if (oct == 0x00)
+        str = "Use the value indicated by the Guaranteed bit rate for downlink";
+    else
+    {
+        temp32 = qos_calc_ext_bitrate(oct);
+        if (temp32 % 1000 == 0)
+            str = wmem_strdup_printf(wmem_packet_scope(), "%u Mbps", temp32 / 1000);
+        else
+            str = wmem_strdup_printf(wmem_packet_scope(), "%u kbps", temp32);
+    }
+    proto_tree_add_uint_format_value(subtree, hf_gsm_map_qos_guar_bitrate_downl_ext, tvb,
+        offset, 1, oct, "%s (%u)", str, oct);
+
+}
+
+/*
+Ext3-QoS-Subscribed ::= OCTET STRING (SIZE (1..2))
+-- Octets 1-2 are coded according to 3GPP TS 24.008 [35] Quality of Service Octets 17-18.
+
+*/
+static void
+dissect_gsm_map_ext3_qos_subscribed(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree _U_, asn1_ctx_t *actx) {
+
+    int offset = 0;
+    proto_tree *subtree;
+    const gchar *str;
+    guint8 oct;
+    guint32 temp32;
+    int length = tvb_reported_length(tvb);
+
+    subtree = proto_item_add_subtree(actx->created_item, ett_gsm_map_ext3_qos_subscribed);
+
+    /* Maximum bit rate for uplink (extended) Octet 17 */
+    oct = tvb_get_guint8(tvb, offset);
+
+    if (oct == 0x00)
+        str = "Use the value indicated by the Maximum bit rate for uplink";
+    else
+    {
+        temp32 = qos_calc_ext_bitrate(oct);
+        if (temp32 % 1000 == 0)
+            str = wmem_strdup_printf(wmem_packet_scope(), "%u Mbps", temp32 / 1000);
+        else
+            str = wmem_strdup_printf(wmem_packet_scope(), "%u kbps", temp32);
+    }
+    proto_tree_add_uint_format_value(subtree, hf_gsm_map_qos_max_bitrate_upl_ext, tvb,
+        offset, 1, oct, "%s (%u)", str, oct);
+
+    offset += 1;
+    if (length == offset) {
+        return;
+    }
+
+    /* Guaranteed bit rate for uplink (extended) Octet 18 */
+    oct = tvb_get_guint8(tvb, offset);
+
+    if (oct == 0x00)
+        str = "Use the value indicated by the Guaranteed bit rate for uplink";
+    else
+    {
+        temp32 = qos_calc_ext_bitrate(oct);
+        if (temp32 % 1000 == 0)
+            str = wmem_strdup_printf(wmem_packet_scope(), "%u Mbps", temp32 / 1000);
+        else
+            str = wmem_strdup_printf(wmem_packet_scope(), "%u kbps", temp32);
+    }
+    proto_tree_add_uint_format_value(subtree, hf_gsm_map_qos_guar_bitrate_upl_ext, tvb,
+        offset, 1, oct, "%s (%u)", str, oct);
+
+    return;
+}
+
+static void
+dissect_gsm_map_ext4_qos_subscribed(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree _U_, asn1_ctx_t *actx) {
+    int offset = 0;
+    proto_tree *subtree;
+
+    subtree = proto_item_add_subtree(actx->created_item, ett_gsm_map_ext3_qos_subscribed);
+
+    proto_tree_add_item(subtree, hf_gsm_map_earp_pvi, tvb, offset, 1, ENC_BIG_ENDIAN);
+    proto_tree_add_item(subtree, hf_gsm_map_earp_pl, tvb, offset, 1, ENC_BIG_ENDIAN);
+    proto_tree_add_item(subtree, hf_gsm_map_earp_pci, tvb, offset, 1, ENC_BIG_ENDIAN);
+
+}
 #define  ELLIPSOID_POINT 0
 #define  ELLIPSOID_POINT_WITH_UNCERT_CIRC 1
 #define  ELLIPSOID_POINT_WITH_UNCERT_ELLIPSE 3
@@ -1136,7 +1343,7 @@ static int dissect_invokeData(proto_tree *tree, tvbuff_t *tvb, int offset, asn1_
       if (application_context_version == 3){
           offset=dissect_gsm_map_ch_SendRoutingInfoArg(FALSE, tvb, offset, actx, tree, -1);
       }else{
-          offset=dissect_gsm_old_SendRoutingInfoArgV2(FALSE, tvb, offset, actx, tree, -1);
+          offset = dissect_gsm_old_SendRoutingInfoArgV2(FALSE, tvb, offset, actx, tree, -1);
       }
     break;
   case 23: /*updateGprsLocation*/
@@ -3127,7 +3334,78 @@ void proto_register_gsm_map(void) {
         { "USSD String", "gsm_map.ussd_string",
           FT_STRING, STR_UNICODE, NULL, 0,
           NULL, HFILL }},
-
+    { &hf_gsm_map_spare_bits,
+        { "Spare bit(s)", "gsm_map.spare_bits",
+        FT_UINT8, BASE_DEC, NULL, 0x0,
+        NULL, HFILL }
+    },
+    { &hf_gsm_map_qos_signalling_ind,
+    { "Signalling indication", "gsm_map.qos.signalling_ind",
+          FT_BOOLEAN, 8, TFS(&gsm_map_qos_signalling_ind_value), 0x10,
+          NULL, HFILL }
+    },
+    { &hf_gsm_map_qos_source_stat_desc,
+    { "Source statistics description", "gsm_map.qos.source_stat_desc",
+          FT_UINT8, BASE_DEC, NULL, 0x0f,
+          NULL, HFILL }
+    },
+    { &hf_gsm_map_qos_max_bitrate_upl_ext,
+    { "Maximum bitrate for uplink (extended)", "gsm_map.qos.max_bitrate_upl_ext",
+          FT_UINT8, BASE_DEC, NULL, 0x0,
+          NULL, HFILL }
+    },
+    { &hf_gsm_map_qos_max_bitrate_downl_ext,
+    { "Maximum bitrate for downlink (extended)", "gsm_map.qos.max_bitrate_downl_ext",
+          FT_UINT8, BASE_DEC, NULL, 0x0,
+          NULL, HFILL }
+    },
+    { &hf_gsm_map_qos_guar_bitrate_upl_ext,
+    { "Guaranteed bitrate for uplink (extended)", "gsm_map.qos.guar_bitrate_upl_ext",
+          FT_UINT8, BASE_DEC, NULL, 0x0,
+          NULL, HFILL }
+    },
+    { &hf_gsm_map_qos_guar_bitrate_downl_ext,
+    { "Guaranteed bitrate for downlink (extended)", "gsm_map.qos.guar_bitrate_downl_ext",
+          FT_UINT8, BASE_DEC, NULL, 0x0,
+          NULL, HFILL }
+    },
+/*
+    { &hf_gsm_map_qos_max_bitrate_upl_ext2,
+    { "Maximum bitrate for uplink (extended-2)", "gsm_map.qos.max_bitrate_upl_ext2",
+          FT_UINT8, BASE_DEC, NULL, 0x0,
+          NULL, HFILL }
+    },
+    { &hf_gsm_map_qos_max_bitrate_downl_ext2,
+    { "Maximum bitrate for downlink (extended-2)", "gsm_map.qos.max_bitrate_downl_ext2",
+          FT_UINT8, BASE_DEC, NULL, 0x0,
+          NULL, HFILL }
+    },
+    { &hf_gsm_map_qos_guar_bitrate_upl_ext2,
+    { "Guaranteed bitrate for uplink (extended-2)", "gsm_map.qos.guar_bitrate_upl_ext2",
+          FT_UINT8, BASE_DEC, NULL, 0x0,
+          NULL, HFILL }
+    },
+    { &hf_gsm_map_qos_guar_bitrate_downl_ext2,
+    { "Guaranteed bitrate for downlink (extended-2)", "gsm_map.qos.guar_bitrate_downl_ext2",
+          FT_UINT8, BASE_DEC, NULL, 0x0,
+          NULL, HFILL }
+    },
+    */
+    { &hf_gsm_map_earp_pvi,
+    { "PVI Pre-emption Vulnerability", "gsm_map.EARP_pre_emption_par_vulnerability",
+              FT_BOOLEAN, 8, TFS(&tfs_disabled_enabled), 0x01,
+              NULL, HFILL }
+    },
+    { &hf_gsm_map_earp_pl,
+    { "PL Priority Level", "gsm_map.EARP_priority_level",
+              FT_UINT8, BASE_DEC, NULL, 0x3C,
+              NULL, HFILL }
+    },
+    { &hf_gsm_map_earp_pci,
+    { "PCI Pre-emption Capability", "gsm_map.EARP_pre_emption_Capability",
+            FT_BOOLEAN, 8, TFS(&tfs_disabled_enabled), 0x40,
+            NULL, HFILL }
+    },
 
 #include "packet-gsm_map-hfarr.c"
   };
@@ -3162,6 +3440,8 @@ void proto_register_gsm_map(void) {
     &ett_gsm_map_extension_data,
     &ett_gsm_map_tbcd_digits,
     &ett_gsm_map_ussd_string,
+    &ett_gsm_map_ext2_qos_subscribed,
+    &ett_gsm_map_ext3_qos_subscribed,
 
 #include "packet-gsm_map-ettarr.c"
   };