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openairinterface5g/openair-cn/MME_APP/mme_app_bearer.c
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/*******************************************************************************
Eurecom OpenAirInterface Core Network
Copyright(c) 1999 - 2014 Eurecom
This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
version 2, as published by the Free Software Foundation.
This program is distributed in the hope it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
The full GNU General Public License is included in this distribution in
the file called "COPYING".
Contact Information
Openair Admin: openair_admin@eurecom.fr
Openair Tech : openair_tech@eurecom.fr
Forums : http://forums.eurecom.fsr/openairinterface
Address : EURECOM,
Campus SophiaTech,
450 Route des Chappes,
CS 50193
06904 Biot Sophia Antipolis cedex,
FRANCE
*******************************************************************************/
/*! \file mme_app_bearer.c
* \brief
* \author Sebastien ROUX, Lionel Gauthier
* \company Eurecom
* \email: lionel.gauthier@eurecom.fr
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "intertask_interface.h"
#include "mme_config.h"
#include "mme_app_extern.h"
#include "mme_app_ue_context.h"
#include "mme_app_defs.h"
#include "secu_defs.h"
#include "assertions.h"
#include "common_types.h"
int
mme_app_send_s11_create_session_req(
struct ue_context_s * const ue_context_pP)
{
uint8_t i = 0;
task_id_t to_task = TASK_UNKNOWN;
/* Keep the identifier to the default APN */
context_identifier_t context_identifier;
MessageDef *message_p = NULL;
SgwCreateSessionRequest *session_request_p = NULL;
struct apn_configuration_s *default_apn_p = NULL;
DevAssert(ue_context_pP != NULL);
#if defined(DISABLE_STANDALONE_EPC)
to_task = TASK_S11;
#else
to_task = TASK_SPGW_APP;
#endif
MME_APP_DEBUG("Handling imsi %"IMSI_FORMAT"\n", ue_context_pP->imsi);
if (ue_context_pP->sub_status != SS_SERVICE_GRANTED) {
/* HSS rejected the bearer creation or roaming is not allowed for this
* UE. This result will trigger an ESM Failure message sent to UE.
*/
DevMessage("Not implemented: ACCESS NOT GRANTED, send ESM Failure to NAS\n");
}
message_p = itti_alloc_new_message(TASK_MME_APP, SGW_CREATE_SESSION_REQUEST);
/* WARNING:
* Some parameters should be provided by NAS Layer:
* - ue_time_zone
* - mei
* - uli
* - uci
* Some parameters should be provided by HSS:
* - PGW address for CP
* - paa
* - ambr
* and by MME Application layer:
* - selection_mode
* Set these parameters with random values for now.
*/
session_request_p = &message_p->ittiMsg.sgwCreateSessionRequest;
memset(session_request_p, 0, sizeof(SgwCreateSessionRequest));
/* As the create session request is the first exchanged message and as
* no tunnel had been previously setup, the distant teid is set to 0.
* The remote teid will be provided in the response message.
*/
session_request_p->teid = 0;
MME_APP_IMSI_TO_STRING(ue_context_pP->imsi, (char *)session_request_p->imsi.digit);
// message content was set to 0
session_request_p->imsi.length = strlen((const char *)session_request_p->imsi.digit);
/* Copy the MSISDN */
memcpy(
session_request_p->msisdn.digit,
ue_context_pP->msisdn,
ue_context_pP->msisdn_length);
session_request_p->msisdn.length = ue_context_pP->msisdn_length;
session_request_p->rat_type = RAT_EUTRAN;
/* Copy the subscribed ambr to the sgw create session request message */
memcpy(
&session_request_p->ambr,
&ue_context_pP->subscribed_ambr,
sizeof(ambr_t));
if (ue_context_pP->apn_profile.nb_apns == 0) {
DevMessage("No APN returned by the HSS");
}
context_identifier = ue_context_pP->apn_profile.context_identifier;
for (i = 0; i < ue_context_pP->apn_profile.nb_apns; i++) {
default_apn_p = &ue_context_pP->apn_profile.apn_configuration[i];
/* OK we got our default APN */
if (default_apn_p->context_identifier == context_identifier)
break;
}
if (!default_apn_p) {
/* Unfortunately we didn't find our default APN... */
DevMessage("No default APN found");
}
memcpy(&session_request_p->bearer_to_create.bearer_level_qos.gbr,
&default_apn_p->ambr, sizeof(ambr_t));
memcpy(&session_request_p->bearer_to_create.bearer_level_qos.mbr,
&default_apn_p->ambr, sizeof(ambr_t));
session_request_p->bearer_to_create.bearer_level_qos.qci =
default_apn_p->subscribed_qos.qci;
session_request_p->bearer_to_create.bearer_level_qos.pvi =
default_apn_p->subscribed_qos.allocation_retention_priority.pre_emp_vulnerability;
session_request_p->bearer_to_create.bearer_level_qos.pci =
default_apn_p->subscribed_qos.allocation_retention_priority.pre_emp_capability;
session_request_p->bearer_to_create.bearer_level_qos.pl =
default_apn_p->subscribed_qos.allocation_retention_priority.priority_level;
/* Asking for default bearer in initial UE message.
* Use the address of ue_context as unique TEID: Need to find better here
* and will generate unique id only for 32 bits platforms.
*/
session_request_p->sender_fteid_for_cp.teid = (uint32_t)ue_context_pP;
session_request_p->sender_fteid_for_cp.interface_type = S11_MME_GTP_C;
session_request_p->bearer_to_create.eps_bearer_id = 5;
ue_context_pP->mme_s11_teid = session_request_p->sender_fteid_for_cp.teid;
ue_context_pP->sgw_s11_teid = 0;
memcpy(session_request_p->apn, default_apn_p->service_selection,
default_apn_p->service_selection_length);
/* Set PDN type for pdn_type and PAA even if this IE is redundant */
session_request_p->pdn_type = default_apn_p->pdn_type;
session_request_p->paa.pdn_type = default_apn_p->pdn_type;
if (default_apn_p->nb_ip_address == 0) {
/* UE DHCPv4 allocated ip address */
memset(session_request_p->paa.ipv4_address, 0, 4);
memset(session_request_p->paa.ipv6_address, 0, 16);
} else {
uint8_t j;
for (j = 0; j < default_apn_p->nb_ip_address; j++) {
ip_address_t *ip_address;
ip_address = &default_apn_p->ip_address[j];
if (ip_address->pdn_type == IPv4) {
memcpy(session_request_p->paa.ipv4_address, ip_address->address.ipv4_address, 4);
} else if (ip_address->pdn_type == IPv6) {
memcpy(session_request_p->paa.ipv6_address, ip_address->address.ipv6_address, 16);
}
// free(ip_address);
}
}
config_read_lock(&mme_config);
session_request_p->peer_ip = mme_config.ipv4.sgw_ip_address_for_S11;
config_unlock(&mme_config);
session_request_p->serving_network.mcc[0] = ue_context_pP->e_utran_cgi.plmn.MCCdigit1;
session_request_p->serving_network.mcc[1] = ue_context_pP->e_utran_cgi.plmn.MCCdigit2;
session_request_p->serving_network.mcc[2] = ue_context_pP->e_utran_cgi.plmn.MCCdigit3;
session_request_p->serving_network.mnc[0] = ue_context_pP->e_utran_cgi.plmn.MNCdigit1;
session_request_p->serving_network.mnc[1] = ue_context_pP->e_utran_cgi.plmn.MNCdigit2;
session_request_p->serving_network.mnc[2] = ue_context_pP->e_utran_cgi.plmn.MNCdigit3;
session_request_p->selection_mode = MS_O_N_P_APN_S_V;
return itti_send_msg_to_task(to_task, INSTANCE_DEFAULT, message_p);
}
int
mme_app_handle_nas_pdn_connectivity_req(
nas_pdn_connectivity_req_t * const nas_pdn_connectivity_req_pP)
{
struct ue_context_s *ue_context_p = NULL;
uint64_t imsi = 0;
MME_APP_DEBUG("Received NAS_PDN_CONNECTIVITY_REQ from NAS\n");
DevAssert(nas_pdn_connectivity_req_pP != NULL);
MME_APP_STRING_TO_IMSI((char *)nas_pdn_connectivity_req_pP->imsi, &imsi);
MME_APP_DEBUG("Handling imsi %"IMSI_FORMAT"\n", imsi);
if ((ue_context_p = mme_ue_context_exists_imsi(&mme_app_desc.mme_ue_contexts,
imsi)) == NULL) {
MME_APP_ERROR("That's embarrassing as we don't know this IMSI\n");
return -1;
}
/* Consider the UE authenticated */
ue_context_p->imsi_auth = IMSI_AUTHENTICATED;
// Temp: save request, in near future merge wisely params in context
memset(ue_context_p->pending_pdn_connectivity_req_imsi,0, 16);
AssertFatal((nas_pdn_connectivity_req_pP->imsi_length > 0) &&
(nas_pdn_connectivity_req_pP->imsi_length < 16),
"BAD IMSI LENGTH %d", nas_pdn_connectivity_req_pP->imsi_length);
AssertFatal((nas_pdn_connectivity_req_pP->imsi_length > 0) &&
(nas_pdn_connectivity_req_pP->imsi_length < 16),
"STOP ON IMSI LENGTH %d", nas_pdn_connectivity_req_pP->imsi_length);
memcpy(ue_context_p->pending_pdn_connectivity_req_imsi,
nas_pdn_connectivity_req_pP->imsi,
nas_pdn_connectivity_req_pP->imsi_length);
ue_context_p->pending_pdn_connectivity_req_imsi_length = nas_pdn_connectivity_req_pP->imsi_length;
DUP_OCTET_STRING(nas_pdn_connectivity_req_pP->apn, ue_context_p->pending_pdn_connectivity_req_apn);
FREE_OCTET_STRING(nas_pdn_connectivity_req_pP->apn)
// dup OctetString
DUP_OCTET_STRING(nas_pdn_connectivity_req_pP->pdn_addr, ue_context_p->pending_pdn_connectivity_req_pdn_addr);
FREE_OCTET_STRING(nas_pdn_connectivity_req_pP->pdn_addr)
ue_context_p->pending_pdn_connectivity_req_pti = nas_pdn_connectivity_req_pP->pti;
ue_context_p->pending_pdn_connectivity_req_ue_id = nas_pdn_connectivity_req_pP->ue_id;
memcpy(&ue_context_p->pending_pdn_connectivity_req_qos,
&nas_pdn_connectivity_req_pP->qos,
sizeof(network_qos_t));
ue_context_p->pending_pdn_connectivity_req_proc_data = nas_pdn_connectivity_req_pP->proc_data;
nas_pdn_connectivity_req_pP->proc_data = NULL;
ue_context_p->pending_pdn_connectivity_req_request_type = nas_pdn_connectivity_req_pP->request_type;
//if ((nas_pdn_connectivity_req_pP->apn.value == NULL) || (nas_pdn_connectivity_req_pP->apn.length == 0)) {
/* TODO: Get keys... */
/* Now generate S6A ULR */
return mme_app_send_s6a_update_location_req(ue_context_p);
//} else {
//return mme_app_send_s11_create_session_req(ue_context_p);
//}
//return -1;
}
// sent by NAS
void
mme_app_handle_conn_est_cnf(
const nas_conn_est_cnf_t * const nas_conn_est_cnf_pP)
{
struct ue_context_s *ue_context_p = NULL;
MessageDef *message_p = NULL;
mme_app_connection_establishment_cnf_t *establishment_cnf_p = NULL;
bearer_context_t *current_bearer_p = NULL;
ebi_t bearer_id = 0;
MME_APP_DEBUG("Received NAS_CONNECTION_ESTABLISHMENT_CNF from NAS\n");
ue_context_p = mme_ue_context_exists_nas_ue_id(&mme_app_desc.mme_ue_contexts, nas_conn_est_cnf_pP->UEid);
if (ue_context_p == NULL) {
MME_APP_ERROR("UE context doesn't exist\n");
return;
}
message_p = itti_alloc_new_message(TASK_MME_APP, MME_APP_CONNECTION_ESTABLISHMENT_CNF);
establishment_cnf_p = &message_p->ittiMsg.mme_app_connection_establishment_cnf;
memset(establishment_cnf_p, 0, sizeof(mme_app_connection_establishment_cnf_t));
memcpy(&establishment_cnf_p->nas_conn_est_cnf,
nas_conn_est_cnf_pP,
sizeof(nas_conn_est_cnf_t));
bearer_id = ue_context_p->default_bearer_id;
current_bearer_p = &ue_context_p->eps_bearers[bearer_id];
establishment_cnf_p->eps_bearer_id = bearer_id;
establishment_cnf_p->bearer_s1u_sgw_fteid.interface_type = S1_U_SGW_GTP_U;
establishment_cnf_p->bearer_s1u_sgw_fteid.teid = current_bearer_p->s_gw_teid;
if ((current_bearer_p->s_gw_address.pdn_type == IPv4) ||
(current_bearer_p->s_gw_address.pdn_type == IPv4_AND_v6)) {
establishment_cnf_p->bearer_s1u_sgw_fteid.ipv4 = 1;
memcpy(&establishment_cnf_p->bearer_s1u_sgw_fteid.ipv4_address,
current_bearer_p->s_gw_address.address.ipv4_address,
4);
}
if ((current_bearer_p->s_gw_address.pdn_type == IPv6) ||
(current_bearer_p->s_gw_address.pdn_type == IPv4_AND_v6)) {
establishment_cnf_p->bearer_s1u_sgw_fteid.ipv6 = 1;
memcpy(establishment_cnf_p->bearer_s1u_sgw_fteid.ipv6_address,
current_bearer_p->s_gw_address.address.ipv6_address,
16);
}
establishment_cnf_p->bearer_qos_qci = current_bearer_p->qci;
establishment_cnf_p->bearer_qos_prio_level = current_bearer_p->prio_level;
establishment_cnf_p->bearer_qos_pre_emp_vulnerability = current_bearer_p->pre_emp_vulnerability;
establishment_cnf_p->bearer_qos_pre_emp_capability = current_bearer_p->pre_emp_capability;
establishment_cnf_p->ambr = ue_context_p->used_ambr;
itti_send_msg_to_task(TASK_S1AP, INSTANCE_DEFAULT, message_p);
}
// sent by S1AP
void
mme_app_handle_conn_est_ind(
const mme_app_connection_establishment_ind_t * const conn_est_ind_pP)
{
struct ue_context_s *ue_context_p = NULL;
MessageDef *message_p = NULL;
MME_APP_DEBUG("Received MME_APP_CONNECTION_ESTABLISHMENT_IND from S1AP\n");
ue_context_p = mme_ue_context_exists_mme_ue_s1ap_id(
&mme_app_desc.mme_ue_contexts,
conn_est_ind_pP->mme_ue_s1ap_id);
if (ue_context_p == NULL) {
MME_APP_DEBUG("We didn't find this mme_ue_s1ap_id in list of UE: %08x\n",
conn_est_ind_pP->mme_ue_s1ap_id);
MME_APP_DEBUG("UE context doesn't exist -> create one\n");
if ((ue_context_p = mme_create_new_ue_context()) == NULL) {
/* Error during ue context malloc */
/* TODO */
DevMessage("mme_create_new_ue_context");
return;
}
// S1AP UE ID AND NAS UE ID ARE THE SAME
ue_context_p->mme_ue_s1ap_id = conn_est_ind_pP->mme_ue_s1ap_id;
ue_context_p->ue_id = conn_est_ind_pP->mme_ue_s1ap_id;
DevAssert(mme_insert_ue_context(&mme_app_desc.mme_ue_contexts, ue_context_p) == 0);
// test
ue_context_p = mme_ue_context_exists_mme_ue_s1ap_id(
&mme_app_desc.mme_ue_contexts,
conn_est_ind_pP->mme_ue_s1ap_id);
AssertFatal(ue_context_p != NULL, "mme_ue_context_exists_mme_ue_s1ap_id Failed");
}
message_p = itti_alloc_new_message(TASK_MME_APP, NAS_CONNECTION_ESTABLISHMENT_IND);
memcpy(&NAS_CONN_EST_IND(message_p).nas,
&conn_est_ind_pP->nas,
sizeof (nas_establish_ind_t));
itti_send_msg_to_task(TASK_NAS_MME, INSTANCE_DEFAULT, message_p);
}
int
mme_app_handle_create_sess_resp(
const SgwCreateSessionResponse * const create_sess_resp_pP)
{
struct ue_context_s *ue_context_p = NULL;
bearer_context_t *current_bearer_p = NULL;
MessageDef *message_p = NULL;
int16_t bearer_id;
DevAssert(create_sess_resp_pP != NULL);
MME_APP_DEBUG("Received SGW_CREATE_SESSION_RESPONSE from S+P-GW\n");
ue_context_p = mme_ue_context_exists_s11_teid(&mme_app_desc.mme_ue_contexts,
create_sess_resp_pP->teid);
if (ue_context_p == NULL) {
MME_APP_DEBUG("We didn't find this teid in list of UE: %08x\n",
create_sess_resp_pP->teid);
return -1;
}
/* Store the S-GW teid */
ue_context_p->sgw_s11_teid = create_sess_resp_pP->s11_sgw_teid.teid;
//---------------------------------------------------------
// Process SgwCreateSessionResponse.bearer_context_created
//---------------------------------------------------------
bearer_id = create_sess_resp_pP->bearer_context_created.eps_bearer_id/* - 5*/;
/* Depending on s11 result we have to send reject or accept for bearers */
DevCheck((bearer_id < BEARERS_PER_UE) && (bearer_id >= 0),
bearer_id,
BEARERS_PER_UE,
0);
ue_context_p->default_bearer_id = bearer_id;
if (create_sess_resp_pP->bearer_context_created.cause != REQUEST_ACCEPTED) {
DevMessage("Cases where bearer cause != REQUEST_ACCEPTED are not handled\n");
}
DevAssert(create_sess_resp_pP->bearer_context_created.s1u_sgw_fteid.interface_type == S1_U_SGW_GTP_U);
/* Updating statistics */
mme_app_desc.mme_ue_contexts.nb_bearers_managed++;
mme_app_desc.mme_ue_contexts.nb_bearers_since_last_stat++;
current_bearer_p = &ue_context_p->eps_bearers[bearer_id];
current_bearer_p->s_gw_teid = create_sess_resp_pP->bearer_context_created.s1u_sgw_fteid.teid;
switch (create_sess_resp_pP->bearer_context_created.s1u_sgw_fteid.ipv4 +
(create_sess_resp_pP->bearer_context_created.s1u_sgw_fteid.ipv6 << 1))
{
default:
case 0: {
/* No address provided: impossible case */
DevMessage("No ip address for user-plane provided...\n");
} break;
case 1: {
/* Only IPv4 address */
current_bearer_p->s_gw_address.pdn_type = IPv4;
memcpy(current_bearer_p->s_gw_address.address.ipv4_address,
&create_sess_resp_pP->bearer_context_created.s1u_sgw_fteid.ipv4_address, 4);
} break;
case 2: {
/* Only IPv6 address */
current_bearer_p->s_gw_address.pdn_type = IPv6;
memcpy(current_bearer_p->s_gw_address.address.ipv6_address,
create_sess_resp_pP->bearer_context_created.s1u_sgw_fteid.ipv6_address, 16);
} break;
case 3: {
/* Both IPv4 and Ipv6 */
current_bearer_p->s_gw_address.pdn_type = IPv4_AND_v6;
memcpy(current_bearer_p->s_gw_address.address.ipv4_address,
&create_sess_resp_pP->bearer_context_created.s1u_sgw_fteid.ipv4_address, 4);
memcpy(current_bearer_p->s_gw_address.address.ipv6_address,
create_sess_resp_pP->bearer_context_created.s1u_sgw_fteid.ipv6_address, 16);
} break;
}
current_bearer_p->p_gw_teid = create_sess_resp_pP->bearer_context_created.s5_s8_u_pgw_fteid.teid;
memset(&current_bearer_p->p_gw_address,0, sizeof(ip_address_t));
if (create_sess_resp_pP->bearer_context_created.bearer_level_qos != NULL) {
current_bearer_p->qci = create_sess_resp_pP->bearer_context_created.bearer_level_qos->qci;
current_bearer_p->prio_level = create_sess_resp_pP->bearer_context_created.bearer_level_qos->pl;
current_bearer_p->pre_emp_vulnerability = create_sess_resp_pP->bearer_context_created.bearer_level_qos->pvi;
current_bearer_p->pre_emp_capability = create_sess_resp_pP->bearer_context_created.bearer_level_qos->pci;
current_bearer_p->prio_level = create_sess_resp_pP->bearer_context_created.bearer_level_qos->pl;
}
mme_app_dump_ue_contexts(&mme_app_desc.mme_ue_contexts);
{
uint8_t *keNB = NULL;
message_p = itti_alloc_new_message(TASK_MME_APP, NAS_PDN_CONNECTIVITY_RSP);
memset((void*)&message_p->ittiMsg.nas_pdn_connectivity_rsp,
0,
sizeof(nas_pdn_connectivity_rsp_t));
derive_keNB(ue_context_p->vector_in_use->kasme, 156, &keNB);
memcpy(NAS_PDN_CONNECTIVITY_RSP(message_p).keNB, keNB, 32);
free(keNB);
NAS_PDN_CONNECTIVITY_RSP(message_p).pti = ue_context_p->pending_pdn_connectivity_req_pti; // NAS internal ref
NAS_PDN_CONNECTIVITY_RSP(message_p).ue_id = ue_context_p->pending_pdn_connectivity_req_ue_id; // NAS internal ref
// TO REWORK:
if ((ue_context_p->pending_pdn_connectivity_req_apn.value != NULL)
&& (ue_context_p->pending_pdn_connectivity_req_apn.length != 0)) {
DUP_OCTET_STRING(
ue_context_p->pending_pdn_connectivity_req_apn,
NAS_PDN_CONNECTIVITY_RSP(message_p).apn);
MME_APP_DEBUG("SET APN FROM NAS PDN CONNECTIVITY CREATE: %s\n", NAS_PDN_CONNECTIVITY_RSP(message_p).apn.value);
} else {
int i;
context_identifier_t context_identifier = ue_context_p->apn_profile.context_identifier;
for (i = 0; i < ue_context_p->apn_profile.nb_apns; i++) {
if (ue_context_p->apn_profile.apn_configuration[i].context_identifier == context_identifier) {
AssertFatal(ue_context_p->apn_profile.apn_configuration[i].service_selection_length > 0, "Bad APN string (len = 0)");
if (ue_context_p->apn_profile.apn_configuration[i].service_selection_length > 0) {
NAS_PDN_CONNECTIVITY_RSP(message_p).apn.value = malloc(ue_context_p->apn_profile.apn_configuration[i].service_selection_length + 1);
NAS_PDN_CONNECTIVITY_RSP(message_p).apn.length = ue_context_p->apn_profile.apn_configuration[i].service_selection_length;
AssertFatal(ue_context_p->apn_profile.apn_configuration[i].service_selection_length <= APN_MAX_LENGTH,
"Bad APN string length %d",
ue_context_p->apn_profile.apn_configuration[i].service_selection_length);
memcpy(NAS_PDN_CONNECTIVITY_RSP(message_p).apn.value,
ue_context_p->apn_profile.apn_configuration[i].service_selection,
ue_context_p->apn_profile.apn_configuration[i].service_selection_length);
NAS_PDN_CONNECTIVITY_RSP(message_p).apn.value[ue_context_p->apn_profile.apn_configuration[i].service_selection_length] = '\0';
MME_APP_DEBUG("SET APN FROM HSS ULA: %s\n", NAS_PDN_CONNECTIVITY_RSP(message_p).apn.value);
break;
}
}
}
}
MME_APP_DEBUG("APN: %s\n", NAS_PDN_CONNECTIVITY_RSP(message_p).apn.value);
switch (create_sess_resp_pP->paa.pdn_type) {
case IPv4:
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length = 4;
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value = malloc(NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length+1);
DevAssert(NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value != NULL);
memcpy(
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value,
create_sess_resp_pP->paa.ipv4_address,
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length);
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value[NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length] = '0';
break;
case IPv6:
DevAssert(create_sess_resp_pP->paa.ipv6_prefix_length == 64); // NAS seems to only support 64 bits
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length = create_sess_resp_pP->paa.ipv6_prefix_length/8;
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value = malloc(NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length+1);
DevAssert(NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value != NULL);
memcpy(
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value,
create_sess_resp_pP->paa.ipv6_address,
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length);
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value[NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length] = '0';
break;
case IPv4_AND_v6:
DevAssert(create_sess_resp_pP->paa.ipv6_prefix_length == 64); // NAS seems to only support 64 bits
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length = 4 + create_sess_resp_pP->paa.ipv6_prefix_length/8;
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value = malloc(NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length+1);
DevAssert(NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value != NULL);
memcpy(
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value,
create_sess_resp_pP->paa.ipv4_address,
4);
memcpy(
&NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value[4],
create_sess_resp_pP->paa.ipv6_address,
create_sess_resp_pP->paa.ipv6_prefix_length/8);
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value[NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length] = '0';
break;
case IPv4_OR_v6:
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length = 4;
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value = malloc(NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length+1);
DevAssert(NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value != NULL);
memcpy(
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value,
create_sess_resp_pP->paa.ipv4_address,
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length);
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.value[NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_addr.length] = '0';
break;
default:
DevAssert(0);
}
NAS_PDN_CONNECTIVITY_RSP(message_p).pdn_type = create_sess_resp_pP->paa.pdn_type;
NAS_PDN_CONNECTIVITY_RSP(message_p).proc_data = ue_context_p->pending_pdn_connectivity_req_proc_data; // NAS internal ref
ue_context_p->pending_pdn_connectivity_req_proc_data = NULL;
memcpy(&NAS_PDN_CONNECTIVITY_RSP(message_p).qos,
&ue_context_p->pending_pdn_connectivity_req_qos,
sizeof(network_qos_t));
memset(&ue_context_p->pending_pdn_connectivity_req_qos,
0,
sizeof(network_qos_t));
NAS_PDN_CONNECTIVITY_RSP(message_p).request_type = ue_context_p->pending_pdn_connectivity_req_request_type; // NAS internal ref
ue_context_p->pending_pdn_connectivity_req_request_type = 0;
// here at this point OctetString are saved in resp, no loss of memory (apn, pdn_addr)
NAS_PDN_CONNECTIVITY_RSP(message_p).eNB_ue_s1ap_id = ue_context_p->eNB_ue_s1ap_id;
NAS_PDN_CONNECTIVITY_RSP(message_p).mme_ue_s1ap_id = ue_context_p->mme_ue_s1ap_id;
NAS_PDN_CONNECTIVITY_RSP(message_p).ebi = bearer_id;
NAS_PDN_CONNECTIVITY_RSP(message_p).qci = current_bearer_p->qci;
NAS_PDN_CONNECTIVITY_RSP(message_p).prio_level = current_bearer_p->prio_level;
NAS_PDN_CONNECTIVITY_RSP(message_p).pre_emp_vulnerability = current_bearer_p->pre_emp_vulnerability;
NAS_PDN_CONNECTIVITY_RSP(message_p).pre_emp_capability = current_bearer_p->pre_emp_capability;
NAS_PDN_CONNECTIVITY_RSP(message_p).sgw_s1u_teid = current_bearer_p->s_gw_teid;
memcpy(&NAS_PDN_CONNECTIVITY_RSP(message_p).sgw_s1u_address,
&current_bearer_p->s_gw_address, sizeof(ip_address_t));
memcpy(&NAS_PDN_CONNECTIVITY_RSP(message_p).ambr, &ue_context_p->subscribed_ambr,
sizeof(ambr_t));
return itti_send_msg_to_task(TASK_NAS_MME, INSTANCE_DEFAULT, message_p);
}
return 0;
}
void
mme_app_handle_initial_context_setup_rsp(
const mme_app_initial_context_setup_rsp_t * const initial_ctxt_setup_rsp_pP)
{
struct ue_context_s *ue_context_p = NULL;
MessageDef *message_p = NULL;
task_id_t to_task = TASK_UNKNOWN;
MME_APP_DEBUG("Received MME_APP_INITIAL_CONTEXT_SETUP_RSP from S1AP\n");
ue_context_p = mme_ue_context_exists_mme_ue_s1ap_id(
&mme_app_desc.mme_ue_contexts,
initial_ctxt_setup_rsp_pP->mme_ue_s1ap_id);
if (ue_context_p == NULL) {
MME_APP_DEBUG("We didn't find this mme_ue_s1ap_id in list of UE: %08x %d(dec)\n",
initial_ctxt_setup_rsp_pP->mme_ue_s1ap_id,
initial_ctxt_setup_rsp_pP->mme_ue_s1ap_id);
return;
}
#if defined(DISABLE_STANDALONE_EPC)
to_task = TASK_S11;
#else
to_task = TASK_SPGW_APP;
#endif
message_p = itti_alloc_new_message(TASK_MME_APP, SGW_MODIFY_BEARER_REQUEST);
AssertFatal(message_p != NULL, "itti_alloc_new_message Failed");
memset((void*)&message_p->ittiMsg.sgwModifyBearerRequest,
0,
sizeof(SgwModifyBearerRequest));
SGW_MODIFY_BEARER_REQUEST(message_p).teid = ue_context_p->sgw_s11_teid;
/* Delay Value in integer multiples of 50 millisecs, or zero */
SGW_MODIFY_BEARER_REQUEST(message_p).delay_dl_packet_notif_req = 0; // TO DO
SGW_MODIFY_BEARER_REQUEST(message_p).bearer_context_to_modify.eps_bearer_id = initial_ctxt_setup_rsp_pP->eps_bearer_id;
memcpy(&SGW_MODIFY_BEARER_REQUEST(message_p).bearer_context_to_modify.s1_eNB_fteid,
&initial_ctxt_setup_rsp_pP->bearer_s1u_enb_fteid,
sizeof(SGW_MODIFY_BEARER_REQUEST(message_p).bearer_context_to_modify.s1_eNB_fteid));
SGW_MODIFY_BEARER_REQUEST(message_p).mme_fq_csid.node_id_type = GLOBAL_UNICAST_IPv4; // TO DO
SGW_MODIFY_BEARER_REQUEST(message_p).mme_fq_csid.csid = 0; // TO DO ...
SGW_MODIFY_BEARER_REQUEST(message_p).indication_flags = 0; // TO DO
SGW_MODIFY_BEARER_REQUEST(message_p).rat_type = RAT_EUTRAN;
/* S11 stack specific parameter. Not used in standalone epc mode */
SGW_MODIFY_BEARER_REQUEST(message_p).trxn = NULL;
itti_send_msg_to_task(to_task, INSTANCE_DEFAULT, message_p);
}
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