Robert Schmidt
659a81997b
Handle IPv6 (and IPv4v6) PDU sessions by correctly instructing nas_config() to set up the interface with provided IP addresses. Note that as of now, IPv6 PDU sessions have not been fully tested. Remove a useless assert at the gNB; to my understanding the gNB does not care about the IP session type (at least for IP), as it just transparently tunnels the IP packets from/to GTP. I added a comment in the code where to change to request a PDU session different from IPv4. Currently it is hardcoded to IPv4, and it seems that a default OAI 5GC config would reject a PDU session type different from IPv4.
169 lines
7.2 KiB
C
169 lines
7.2 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#ifndef PDU_SESSION_ESTABLISHMENT_ACCEPT_H_
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#define PDU_SESSION_ESTABLISHMENT_ACCEPT_H_
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#include <stdint.h>
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/* PDU Session Establish Accept Optional IE Identifiers - TS 24.501 Table 8.3.2.1.1 */
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#define IEI_5GSM_CAUSE 0x59 /* 5GSM cause 9.11.4.2 */
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#define IEI_PDU_ADDRESS 0x29 /* PDU address 9.11.4.10 */
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#define IEI_RQ_TIMER_VALUE 0x56 /* GPRS timer 9.11.2.3 */
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#define IEI_SNSSAI 0x22 /* S-NSSAI 9.11.2.8 */
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#define IEI_ALWAYSON_PDU 0x80 /* Always-on PDU session indication 9.11.4.3 */
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#define IEI_MAPPED_EPS 0x75 /* Mapped EPS bearer contexts 9.11.4.8 */
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#define IEI_EAP_MSG 0x78 /* EAP message 9.11.2.2 */
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#define IEI_AUTH_QOS_DESC 0x79 /* QoS flow descriptions 9.11.4.12 */
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#define IEI_EXT_CONF_OPT 0x7b /* Extended protocol configuration options 9.11.4.6 */
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#define IEI_DNN 0x25 /* DNN 9.11.2.1B */
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/* PDU Session type value - TS 24.501 Table 9.11.4.10.1*/
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#define PDU_SESSION_TYPE_IPV4 0b001
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#define PDU_SESSION_TYPE_IPV6 0b010
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#define PDU_SESSION_TYPE_IPV4V6 0b011
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/* Rule operation codes - TS 24.501 Table 9.11.4.13.1 */
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#define ROC_RESERVED_0 0b000 /* Reserved */
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#define ROC_CREATE_NEW_QOS_RULE 0b001 /* Create new QoS rule */
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#define ROC_DELETE_QOS_RULE 0b010 /* Delete existing QoS rule */
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#define ROC_MODIFY_QOS_RULE_ADD_PF 0b011 /* Modify existing QoS rule and add packet filters */
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#define ROC_MODIFY_QOS_RULE_REPLACE_PF 0b100 /* Modify existing QoS rule and replace all packet filters */
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#define ROC_MODIFY_QOS_RULE_DELETE_PF 0b101 /* Modify existing QoS rule and delete packet filters */
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#define ROC_MODIFY_QOS_RULE_WITHOUT_PF 0b110 /* Modify existing QoS rule without modifying packet filters */
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#define ROC_RESERVED_1 0b111 /* Reserved */
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/* DNN - APN
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* TS 23.003 9.1
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* The APN is composed of two parts, the APN Network Identifier (9.1.1) & The APN Operator Identifier (9.1.2).
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*
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* The DNN information element has a length in the range of 3 to 102 octets.
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* The Header is consisted of two octets, the DNN IEI and the Length of the DNN contents fields, each is 1 octet.
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* The DNN value payload starts from the 3rd octet.
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* The accumulated max length of APN payload is 100 octets.
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* The min length of the APN payload is 1 octet.
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*/
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#define APN_MAX_LEN 100
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#define APN_MIN_LEN 1
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/* Mandatory Presence IE - TS 24.501 Table 8.3.2.1.1 */
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typedef struct packet_filter_create_qos_rule_s {
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uint8_t pf_dir; /* Packet filter direction */
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uint8_t pf_id; /* Packet filter identifier */
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uint8_t length; /* Length of packet filter contents */
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} packet_filter_type1_t; /* TS 24.501 Figure 9.11.4.13.3 */
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typedef struct packet_filter_modify_qos_rule_s {
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uint8_t pf_id; /* Packet filter identifier */
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} packet_filter_type2_t; /* TS 24.501 Figure 9.11.4.13.4 */
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typedef struct packet_filter_s {
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union pf_type {
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packet_filter_type1_t type_1;
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packet_filter_type2_t type_2;
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} pf_type;
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} packet_filter_t;
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typedef struct qos_rule_s {
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uint8_t id; /* QoS rule identifier */
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uint16_t length; /* Length of QoS Rule */
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uint8_t oc; /* Rule operation code (3bits) */
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uint8_t dqr; /* DQR bit (1 bit) */
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uint8_t nb_pf; /* Number of packet filters (4 bits) */
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uint8_t prcd; /* QoS rule precedence */
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uint8_t qfi; /* QoS Flow Identifier */
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} qos_rule_t;
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typedef struct auth_qos_rules_s {
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uint16_t length; /* Length of QoS rules IE */
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} auth_qos_rule_t; /* QoS Rule as defined in 24.501 Figure 9.11.4.13.2 */
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typedef struct session_ambr_s {
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uint8_t length; /* Length of Session-AMBR contents */
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uint8_t unit_dl; /* Unit for Session-AMBR for downlink */
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uint16_t sess_dl; /* Session-AMBR for downlink */
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uint8_t unit_ul; /* Unit for Session-AMBR for uplink */
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uint16_t sess_ul; /* Session-AMBR for uplink */
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} session_ambr_t; /* TS 24.501 Figure 9.11.4.14.1 */
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/* Optional Presence IE - TS 24.501 Table 8.3.2.1.1 */
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typedef struct pdu_address_s {
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uint8_t pdu_iei; /* PDU Address IEI (0x29) */
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uint8_t pdu_length; /* Length of PDU address contents */
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uint8_t pdu_type; /* PDU session type value */
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uint8_t pdu_addr_oct[12]; /* PDU address information (depending on type, up to 12 bytes)*/
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} pdu_address_t; /* TS 24.501 9.11.4.10 */
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typedef struct dnn_s {
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uint8_t dnn_iei; /* DNN IEI (0x25) */
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uint8_t dnn_length; /* Length of DNN contents */
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} dnn_t; /* TS 24.501 9.11.2.1A */
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typedef struct ext_pP_t {
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uint16_t length;
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} ext_pP_t; /* TS 24.008 10.5.6.3A - Ommited, only length is processed*/
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typedef struct qos_fd_s {
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uint16_t length;
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} qos_fd_t; /* TS 24.501 9.11.4.12 - Ommited, only length is processed*/
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typedef struct pdu_session_establishment_accept_msg_s {
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/* Mandatory presence */
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uint8_t epd; /* Extended Protocol Discriminator */
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uint8_t pdu_id; /* PDU Session ID */
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uint8_t pti; /* Procedure Transaction Identity */
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uint8_t msg_type; /* Message Type */
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uint8_t pdu_type; /* PDU Session Type */
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uint8_t ssc_mode; /* SSC mode */
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auth_qos_rule_t qos_rules; /* Authorized QoS rules */
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session_ambr_t sess_ambr; /* Session-AMBR */
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/* Optional presence */
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dnn_t dnn_ie; /* Data Network Name */
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pdu_address_t pdu_addr_ie; /* PDU Address */
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ext_pP_t ext_pp_ie; /* Extended Protocol Configuration Options */
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qos_fd_t qos_fd_ie; /* QoS flow descriptions */
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} pdu_session_establishment_accept_msg_t; /* 24.501 Table 8.3.2.1.1 */
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typedef struct security_protected_plain_nas_5gs_msg_s {
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uint8_t epd; /* Extended Protocol Discriminator */
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uint8_t sht; /* Security Header Type */
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uint8_t msg_type; /* Message Type */
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uint8_t payload_type; /* Payload Container Type */
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uint16_t payload_len; /* Payload Container Length */
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} security_protected_plain_nas_5gs_msg_t;
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typedef struct security_protected_nas_5gs_msg_s {
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uint8_t epd; /* Extended Protocol Discriminator */
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uint8_t sht; /* Security Header Type */
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uint32_t mac; /* Message Authentication Code */
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uint8_t sqn; /* Sequence Number */
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} security_protected_nas_5gs_msg_t; /* 24.501 Figure 9.1.1.2 */
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void capture_pdu_session_establishment_accept_msg(uint8_t *buffer, uint32_t msg_length);
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#endif
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