[PFCP] Add more IE dissection.
Change-Id: I71037d31283b1a2758617e6cdc6c3b58048e017d Reviewed-on: https://code.wireshark.org/review/23397 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>
This commit is contained in:
AndersBroman
Anders Broman
parent
5c4a96b58b
commit
970ed78492
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@ -78,12 +78,31 @@ static int hf_pfcp_b1_v4 = -1;
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static int hf_pfcp_f_seid_ipv4 = -1;
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static int hf_pfcp_f_seid_ipv6 = -1;
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static int hf_pfcp_pdr_id = -1;
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static int hf_pfcp_precedence = -1;
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static int hf_pfcp_source_interface = -1;
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static int hf_pfcp_f_teid_flags = -1;
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static int hf_pfcp_fteid_flg_spare = -1;
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static int hf_pfcp_fteid_flg_b2_ch = -1;
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static int hf_pfcp_fteid_flg_b1_v6 = -1;
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static int hf_pfcp_fteid_flg_b0_v4 = -1;
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static int hf_pfcp_f_teid_ipv4 = -1;
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static int hf_pfcp_f_teid_ipv6 = -1;
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static int hf_pfcp_pdn_instance = -1;
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static int hf_pfcp_ue_ip_address_flags = -1;
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static int hf_pfcp_ue_ip_address_flag_b0 = -1;
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static int hf_pfcp_ue_ip_address_flag_b1 = -1;
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static int hf_pfcp_ue_ip_address_flag_b2 = -1;
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static int hf_pfcp_ue_ip_addr_ipv4 = -1;
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static int hf_pfcp_ue_ip_add_ipv6 = -1;
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static int hf_pfcp_application_id = -1;
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static int ett_pfcp = -1;
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static int ett_pfcp_flags = -1;
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static int ett_pfcp_ie = -1;
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static int ett_pfcp_grouped_ie = -1;
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static int ett_pfcp_f_seid_flags = -1;
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static int ett_f_teid_flags = -1;
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static int ett_pfcp_ue_ip_address_flags = -1;
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static expert_field ei_pfcp_ie_reserved = EI_INIT;
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static expert_field ei_pfcp_ie_data_not_decoded = EI_INIT;
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@ -337,20 +356,137 @@ dissect_pfcp_cause(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, prot
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/*
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* 8.2.2 Source Interface
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*/
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static const value_string pfcp_source_interface_vals[] = {
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{ 0, "Access" },
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{ 1, "Core" },
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{ 2, "SGi-LAN" },
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{ 3, "CP-function" },
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{ 0, NULL }
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};
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static void
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dissect_pfcp_source_interface(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *item, guint16 length, guint8 message_type _U_)
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{
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int offset = 0;
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guint32 value;
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/* Octet 5 Spare Interface value */
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proto_tree_add_item(tree, hf_pfcp_spare_h1, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item_ret_uint(tree, hf_pfcp_source_interface, tvb, offset, 1, ENC_BIG_ENDIAN, &value);
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offset += 1;
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proto_item_append_text(item, "%s", val_to_str_const(value, pfcp_source_interface_vals, "Unknown"));
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if (offset < length) {
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proto_tree_add_expert(tree, pinfo, &ei_pfcp_ie_data_not_decoded, tvb, offset, -1);
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}
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}
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/*
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* 8.2.3 F-TEID
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*/
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static void
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dissect_pfcp_f_teid(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *item _U_, guint16 length, guint8 message_type _U_)
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{
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int offset = 0;
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guint64 fteid_flags_val;
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static const int * pfcp_fteid_flags[] = {
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&hf_pfcp_fteid_flg_spare,
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&hf_pfcp_fteid_flg_b2_ch,
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&hf_pfcp_fteid_flg_b1_v6,
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&hf_pfcp_fteid_flg_b0_v4,
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NULL
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};
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/* Octet 5 Spare CH V6 V4*/
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proto_tree_add_bitmask_with_flags_ret_uint64(tree, tvb, offset, hf_pfcp_f_teid_flags,
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ett_f_teid_flags, pfcp_fteid_flags, ENC_BIG_ENDIAN, BMT_NO_FALSE | BMT_NO_INT, &fteid_flags_val);
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offset += 1;
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/* The following flags are coded within Octet 5:
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* Bit 1 - V4: If this bit is set to "1" and the CH bit is not set, then the IPv4 address field shall be present,
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* otherwise the IPv4 address field shall not be present.
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* Bit 2 - V6: If this bit is set to "1" and the CH bit is not set, then the IPv6 address field shall be present,
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* otherwise the IPv6 address field shall not be present.
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* Bit 3 - CH (CHOOSE): If this bit is set to "1", then the TEID, IPv4 address and IPv6 address fields shall not be
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* present and the UP function shall assign an F-TEID with an IP4 or an IPv6 address if the V4 or V6 bit is set respectively.
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This bit shall only be set by the CP function.
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*/
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if ((fteid_flags_val & 0x4) == 0) {
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return;
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}
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if ((fteid_flags_val & 0x1) == 1) {
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/* m to (m+3) IPv4 address */
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proto_tree_add_item(tree, hf_pfcp_f_teid_ipv4, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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}
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if ((fteid_flags_val & 0x2) == 2) {
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/* p to (p+15) IPv6 address */
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proto_tree_add_item(tree, hf_pfcp_f_teid_ipv6, tvb, offset, 16, ENC_NA);
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offset += 16;
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}
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if (offset < length) {
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proto_tree_add_expert(tree, pinfo, &ei_pfcp_ie_data_not_decoded, tvb, offset, -1);
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}
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}
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/*
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* 8.2.4 PDN Instance
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*/
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static void
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dissect_pfcp_pdn_instance(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length, guint8 message_type _U_)
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{
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int offset = 0;
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/* Octet 5 5 to (n+4) PDN Instance
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* The PDN instance field shall be encoded as an OctetString
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*/
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proto_tree_add_item(tree, hf_pfcp_pdn_instance, tvb, offset, length, ENC_NA);
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}
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/*
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* 8.2.5 SDF Filter
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*/
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/*
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* 8.2.6 Application ID
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*/
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static void
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dissect_pfcp_application_id(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length, guint8 message_type _U_)
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{
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int offset = 0;
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/* Octet 5 5 to (n+4) PDN Instance
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* The PDN instance field shall be encoded as an OctetString
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*/
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proto_tree_add_item(tree, hf_pfcp_application_id, tvb, offset, length, ENC_NA);
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}
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/*
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* 8.2.7 Gate Status
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*/
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/*
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* 8.2.8 MBR
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*/
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/*
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* 8.2.9 GBR
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*/
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/*
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* 8.2.10 QER Correlation ID
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*/
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/*
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* 8.2.11 Precedence
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*/
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static void
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dissect_pfcp_precedence(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *item, guint16 length, guint8 message_type _U_)
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{
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int offset = 0;
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guint32 value;
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/* Octet 5 5 to 8 Precedence value */
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proto_tree_add_item_ret_uint(tree, hf_pfcp_precedence, tvb, offset, 4, ENC_BIG_ENDIAN, &value);
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offset += 4;
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proto_item_append_text(item, "%u", value);
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if (offset < length) {
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proto_tree_add_expert(tree, pinfo, &ei_pfcp_ie_data_not_decoded, tvb, offset, -1);
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}
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}
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/*
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* 8.2.12 DL Transport Level Marking
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* 8.2.13 Volume Threshold
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* 8.2.14 Time Threshold
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@ -381,10 +517,13 @@ static void
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dissect_pfcp_pdr_id(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *item _U_, guint16 length, guint8 message_type _U_)
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{
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int offset = 0;
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guint32 rule_id;
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/* Octet 5 to 6 Rule ID*/
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proto_tree_add_item(tree, hf_pfcp_pdr_id, tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item_ret_uint(tree, hf_pfcp_pdr_id, tvb, offset, 2, ENC_BIG_ENDIAN, &rule_id);
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offset += 2;
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proto_item_append_text(item, "%u", rule_id);
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if (offset < length) {
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proto_tree_add_expert(tree, pinfo, &ei_pfcp_ie_data_not_decoded, tvb, offset, -1);
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}
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@ -397,7 +536,7 @@ static void
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dissect_pfcp_f_seid(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *item _U_, guint16 length, guint8 message_type _U_)
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{
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int offset = 0;
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guint64 f_seid_flags = 2;
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guint64 f_seid_flags;
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static const int * pfcp_f_seid_flags[] = {
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&hf_pfcp_spare_b7,
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@ -532,8 +671,51 @@ dissect_pfcp_node_id(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_
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* 8.2.59 Usage Information
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* 8.2.60 Application Instance ID
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* 8.2.61 Flow Information
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*/
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/*
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* 8.2.62 UE IP Address
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*/
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static const true_false_string pfcp_ue_ip_add_sd_flag_vals = {
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"Destination IP address",
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"Source IP address",
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};
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static void
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dissect_pfcp_ue_ip_address(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *item _U_, guint16 length, guint8 message_type _U_)
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{
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int offset = 0;
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guint64 ue_ip_address_flags;
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static const int * pfcp_ue_ip_address_flags[] = {
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&hf_pfcp_ue_ip_address_flag_b2,
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&hf_pfcp_ue_ip_address_flag_b1,
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&hf_pfcp_ue_ip_address_flag_b0,
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NULL
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};
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/* Octet 5 Spare Spare Spare Spare Spare Spare V4 V6*/
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proto_tree_add_bitmask_with_flags_ret_uint64(tree, tvb, offset, hf_pfcp_ue_ip_address_flags,
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ett_pfcp_ue_ip_address_flags, pfcp_ue_ip_address_flags, ENC_BIG_ENDIAN, BMT_NO_FALSE | BMT_NO_INT, &ue_ip_address_flags);
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offset += 1;
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/* IPv4 address (if present)*/
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if ((ue_ip_address_flags & 0x1) == 1) {
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proto_tree_add_item(tree, hf_pfcp_ue_ip_addr_ipv4, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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}
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/* IPv6 address (if present)*/
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if ((ue_ip_address_flags & 0x2) == 2) {
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proto_tree_add_item(tree, hf_pfcp_ue_ip_add_ipv6, tvb, offset, 16, ENC_NA);
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offset += 16;
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}
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if (offset < length) {
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proto_tree_add_expert(tree, pinfo, &ei_pfcp_ie_data_not_decoded, tvb, offset, -1);
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}
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}
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/*
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* 8.2.63 Packet Rate
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*/
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/*
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* 8.2.64 Outer Header Removal
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*/
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/*
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@ -605,16 +787,16 @@ static const pfcp_ie_t pfcp_ies[] = {
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/* 17 */ { dissect_pfcp_remove_urr }, /* Remove URR Extendable / Table 7.5.4.8 */
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/* 18 */ { dissect_pfcp_remove_qer }, /* Remove QER Extendable / Table 7.5.4.9 */
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/* 19 */ { dissect_pfcp_cause }, /* Cause Fixed / Subclause 8.2.1 */
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/* 20 */ { NULL }, /* Source Interface Extendable / Subclause 8.2.2 */
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/* 21 */ { NULL }, /* F-TEID Extendable / Subclause 8.2.3 */
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/* 22 */ { NULL }, /* PDN Instance Variable Length / Subclause 8.2.4 */
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/* 20 */ { dissect_pfcp_source_interface }, /* Source Interface Extendable / Subclause 8.2.2 */
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/* 21 */ { dissect_pfcp_f_teid }, /* F-TEID Extendable / Subclause 8.2.3 */
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/* 22 */ { dissect_pfcp_pdn_instance }, /* PDN Instance Variable Length / Subclause 8.2.4 */
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/* 23 */ { NULL }, /* SDF Filter Extendable / Subclause 8.2.5 */
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/* 24 */ { NULL }, /* Application ID Variable Length / Subclause 8.2.6 */
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/* 24 */ { dissect_pfcp_application_id }, /* Application ID Variable Length / Subclause 8.2.6 */
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/* 25 */ { NULL }, /* Gate Status Extendable / Subclause 8.2.7 */
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/* 26 */ { NULL }, /* MBR Extendable / Subclause 8.2.8 */
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/* 27 */ { NULL }, /* GBR Extendable / Subclause 8.2.9 */
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/* 28 */ { NULL }, /* QER Correlation ID Extendable / Subclause 8.2.10 */
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/* 29 */ { NULL }, /* Precedence Extendable / Subclause 8.2.11 */
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/* 29 */ { dissect_pfcp_precedence }, /* Precedence Extendable / Subclause 8.2.11 */
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/* 30 */ { NULL }, /* DL Transport Level Marking Extendable / Subclause 8.2.12 */
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/* 31 */ { NULL }, /* Volume Threshold Extendable /Subclause 8.2.13 */
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/* 32 */ { NULL }, /* Time Threshold Extendable /Subclause 8.2.14 */
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@ -678,7 +860,7 @@ static const pfcp_ie_t pfcp_ies[] = {
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/* 90 */ { NULL }, /* Usage Information Extendable / Subclause 8.2.59 */
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/* 91 */ { NULL }, /* Application Instance ID Variable Length / Subclause 8.2.60 */
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/* 92 */ { NULL }, /* Flow Information Extendable / Subclause 8.2.61 */
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/* 93 */ { NULL }, /* UE IP Address Extendable / Subclause 8.2.62 */
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/* 93 */ { dissect_pfcp_ue_ip_address }, /* UE IP Address Extendable / Subclause 8.2.62 */
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/* 94 */ { NULL }, /* Packet Rate Extendable / Subclause 8.2.63 */
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/* 95 */ { NULL }, /* Outer Header Removal Extendable / Subclause 8.2.64 */
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/* 96 */ { dissect_pfcp_recovery_time_stamp }, /* Recovery Time Stamp Extendable / Subclause 8.2.65 */
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@ -881,7 +1063,7 @@ dissect_pfcp_ies_common(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree,
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proto_tree_add_item(ie_tree, hf_pfcp_enterprice_id, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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/* give the whole IE to the subdissector */
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ie_tvb = tvb_new_subset_remaining(tvb, offset-6);
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ie_tvb = tvb_new_subset_length(tvb, offset-6, length);
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dissector_try_uint_new(pfcp_enterprise_ies_dissector_table, enterprise_id, ie_tvb, pinfo, ie_tree, FALSE, ti);
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offset += length;
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} else {
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@ -899,7 +1081,7 @@ dissect_pfcp_ies_common(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree,
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proto_tree_add_item(ie_tree, hf_pfcp2_ie_len, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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if (type < (NUM_PFCP_IES -1)) {
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ie_tvb = tvb_new_subset_remaining(tvb, offset);
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ie_tvb = tvb_new_subset_length(tvb, offset, length);
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if(pfcp_ies[type].decode){
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(*pfcp_ies[type].decode) (ie_tvb, pinfo, ie_tree, ti, length, message_type);
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} else {
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@ -1195,10 +1377,95 @@ proto_register_pfcp(void)
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FT_UINT16, BASE_DEC, NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_pfcp_precedence,
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{ "Precedence", "pfcp.precedence",
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FT_UINT16, BASE_DEC, NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_pfcp_source_interface,
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{ "Source Interface", "pfcp.source_interface",
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FT_UINT8, BASE_DEC, VALS(pfcp_source_interface_vals), 0x0f,
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NULL, HFILL }
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},
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{ &hf_pfcp_f_teid_flags,
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{ "Flags", "pfcp.f_teid_flags",
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FT_UINT8, BASE_HEX, NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_pfcp_fteid_flg_spare,
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{ "Spare", "pfcp.fteid_flg.spare",
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FT_UINT8, BASE_DEC, NULL, 0xf8,
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NULL, HFILL }
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},
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{ &hf_pfcp_fteid_flg_b2_ch,
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{ "CH (CHOOSE)", "pfcp.f_teid_flags.ch",
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FT_BOOLEAN, 8, NULL, 0x04,
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NULL, HFILL }
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},
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{ &hf_pfcp_fteid_flg_b1_v6,
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{ "V6", "pfcp.f_teid_flags.v6",
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FT_BOOLEAN, 8, NULL, 0x02,
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NULL, HFILL }
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},
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{ &hf_pfcp_fteid_flg_b0_v4,
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{ "V4", "pfcp.f_teid_flags.v4",
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FT_BOOLEAN, 8, NULL, 0x01,
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NULL, HFILL }
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},
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{ &hf_pfcp_f_teid_ipv4,
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{ "IPv4 address", "pfcp.f_teid.ipv4_addr",
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FT_IPv4, BASE_NONE, NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_pfcp_f_teid_ipv6,
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{ "IPv6 address", "pfcp.f_teid.ipv6_addr",
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FT_IPv6, BASE_NONE, NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_pfcp_pdn_instance,
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{ "PDN Instance", "pfcp.pdn_instance",
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FT_BYTES, BASE_NONE, NULL, 0x0,
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NULL, HFILL }
|
||||
},
|
||||
{ &hf_pfcp_ue_ip_address_flags,
|
||||
{ "Flags", "pfcp.ue_ip_address_flags",
|
||||
FT_UINT8, BASE_HEX, NULL, 0x0,
|
||||
NULL, HFILL }
|
||||
},
|
||||
{ &hf_pfcp_ue_ip_address_flag_b0,
|
||||
{ "V6", "pfcp.ue_ip_address_flag.v6",
|
||||
FT_BOOLEAN, 8, NULL, 0x01,
|
||||
NULL, HFILL }
|
||||
},
|
||||
{ &hf_pfcp_ue_ip_address_flag_b1,
|
||||
{ "V4", "pfcp.ue_ip_address_flag.v4",
|
||||
FT_BOOLEAN, 8, NULL, 0x02,
|
||||
NULL, HFILL }
|
||||
},
|
||||
{ &hf_pfcp_ue_ip_address_flag_b2,
|
||||
{ "S/D", "pfcp.ue_ip_address_flag.sd",
|
||||
FT_BOOLEAN, 8, TFS(&pfcp_ue_ip_add_sd_flag_vals), 0x04,
|
||||
NULL, HFILL }
|
||||
},
|
||||
{ &hf_pfcp_ue_ip_addr_ipv4,
|
||||
{ "IPv4 address", "pfcp.ue_ip_addr_ipv4",
|
||||
FT_IPv4, BASE_NONE, NULL, 0x0,
|
||||
NULL, HFILL }
|
||||
},
|
||||
{ &hf_pfcp_ue_ip_add_ipv6,
|
||||
{ "IPv6 address", "pfcp.ue_ip_addr_ipv6",
|
||||
FT_IPv6, BASE_NONE, NULL, 0x0,
|
||||
NULL, HFILL }
|
||||
},
|
||||
{ &hf_pfcp_application_id,
|
||||
{ "Application Identifier", "pfcp.application_id",
|
||||
FT_BYTES, BASE_NONE, NULL, 0x0,
|
||||
NULL, HFILL }
|
||||
},
|
||||
};
|
||||
|
||||
/* Setup protocol subtree array */
|
||||
#define NUM_INDIVIDUAL_ELEMS_PFCP 5
|
||||
#define NUM_INDIVIDUAL_ELEMS_PFCP 7
|
||||
gint *ett[NUM_INDIVIDUAL_ELEMS_PFCP +
|
||||
(NUM_PFCP_IES - 1)];
|
||||
|
||||
|
|
@ -1207,6 +1474,8 @@ proto_register_pfcp(void)
|
|||
ett[2] = &ett_pfcp_ie;
|
||||
ett[3] = &ett_pfcp_grouped_ie;
|
||||
ett[4] = &ett_pfcp_f_seid_flags;
|
||||
ett[5] = &ett_f_teid_flags;
|
||||
ett[6] = &ett_pfcp_ue_ip_address_flags;
|
||||
|
||||
static ei_register_info ei[] = {
|
||||
{ &ei_pfcp_ie_reserved,{ "pfcp.ie_id_reserved", PI_PROTOCOL, PI_ERROR, "Reserved IE value used", EXPFILL } },
|
||||
|
|
|
|||
Loading…
Reference in New Issue