winckel
5a6de28863
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4782 818b1a75-f10b-46b9-bf7c-635c3b92a50f
453 lines
14 KiB
C
453 lines
14 KiB
C
/*******************************************************************************
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Eurecom OpenAirInterface
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Copyright(c) 1999 - 2012 Eurecom
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information
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Openair Admin: openair_admin@eurecom.fr
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Openair Tech : openair_tech@eurecom.fr
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Forums : http://forums.eurecom.fr/openairinterface
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Address : EURECOM, Campus SophiaTech, 450 Route des Chappes
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06410 Biot FRANCE
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*******************************************************************************/
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#include <string.h>
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#include "enb_app.h"
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#include "assertions.h"
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#include "log.h"
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#if defined(OAI_EMU)
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# include "OCG.h"
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# include "OCG_extern.h"
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#endif
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#if defined(ENABLE_ITTI)
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# include "intertask_interface.h"
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# include "timer.h"
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# if defined(ENABLE_USE_MME)
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# include "s1ap_eNB.h"
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# include "sctp_eNB_task.h"
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# endif
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extern unsigned char NB_eNB_INST;
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#endif
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#if defined(ENABLE_ITTI)
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/*------------------------------------------------------------------------------*/
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# if defined(ENABLE_USE_MME)
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# define ENB_REGISTER_RETRY_DELAY 10
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# endif
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typedef struct mme_ip_address_s {
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unsigned ipv4:1;
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unsigned ipv6:1;
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char *ipv4_address;
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char *ipv6_address;
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} mme_ip_address_t;
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typedef struct Enb_properties_s {
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/* Unique eNB_id to identify the eNB within EPC.
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* For macro eNB ids this field should be 20 bits long.
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* For home eNB ids this field should be 28 bits long.
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*/
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uint32_t eNB_id;
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/* The type of the cell */
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enum cell_type_e cell_type;
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/* Optional name for the cell
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* NOTE: the name can be NULL (i.e no name) and will be cropped to 150
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* characters.
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*/
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char *eNB_name;
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/* Tracking area code */
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uint16_t tac;
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/* Mobile Country Code
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* Mobile Network Code
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*/
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uint16_t mcc;
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uint16_t mnc;
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/* Default Paging DRX of the eNB as defined in TS 36.304 */
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paging_drx_t default_drx;
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/* Nb of MME to connect to */
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uint8_t nb_mme;
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/* List of MME to connect to */
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mme_ip_address_t mme_ip_address[S1AP_MAX_NB_MME_IP_ADDRESS];
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} Enb_properties_t;
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/*------------------------------------------------------------------------------*/
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# if defined(ENABLE_USE_MME)
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static uint32_t enb_nb = 1; /* Default number of eNB */
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# endif
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/* eNB 0 properties */
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static Enb_properties_t enb_0_properties =
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{
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347472,
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CELL_MACRO_ENB,
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"eNB_Eurecom_0",
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0,
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208,
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92,
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PAGING_DRX_256,
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1, /* There are 2 addresses defined, but use only one by default */
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{
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{
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1,
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0,
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"192.168.12.87",
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"2001:660:5502:12:30da:829a:2343:b6cf"
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},
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{
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1,
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0,
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"192.168.12.86",
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""
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}
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}
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};
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/* eNB 1 properties */
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static Enb_properties_t enb_1_properties =
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{
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347473,
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CELL_MACRO_ENB,
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"eNB_Eurecom_1",
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0,
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208,
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92,
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PAGING_DRX_256,
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1, /* There are 2 addresses defined, but use only one by default */
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{
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{
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1,
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0,
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"192.168.12.87",
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"2001:660:5502:12:30da:829a:2343:b6cf"
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},
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{
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1,
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0,
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"192.168.12.88",
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""
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}
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}
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};
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/* eNB 2 properties */
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static Enb_properties_t enb_2_properties =
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{
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347474,
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CELL_MACRO_ENB,
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"eNB_Eurecom_2",
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0,
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208,
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92,
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PAGING_DRX_256,
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1,
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{
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{
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1,
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0,
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"192.168.12.87",
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"2001:660:5502:12:30da:829a:2343:b6cf"
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},
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}
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};
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/* eNB 3 properties */
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static Enb_properties_t enb_3_properties =
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{
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347475,
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CELL_MACRO_ENB,
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"eNB_Eurecom_3",
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0,
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208,
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92,
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PAGING_DRX_256,
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1,
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{
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{
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1,
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0,
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"192.168.12.87",
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"2001:660:5502:12:30da:829a:2343:b6cf"
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},
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}
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};
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static Enb_properties_t *enb_properties[] =
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{
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&enb_0_properties,
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&enb_1_properties,
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&enb_2_properties,
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&enb_3_properties,
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};
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/*------------------------------------------------------------------------------*/
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static void configure_rrc(void)
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{
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uint32_t eNB_id_start = 0;
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uint32_t eNB_id_end = 1;
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uint32_t eNB_id;
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MessageDef *msg_p;
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# if defined(OAI_EMU)
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eNB_id_start = oai_emulation.info.first_enb_local;
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eNB_id_end = oai_emulation.info.first_enb_local + oai_emulation.info.nb_enb_local;
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# endif
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for (eNB_id = eNB_id_start; (eNB_id < eNB_id_end) ; eNB_id++)
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{
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msg_p = itti_alloc_new_message (TASK_ENB_APP, RRC_CONFIGURATION_REQ);
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RRC_CONFIGURATION_REQ (msg_p).cell_identity = enb_properties[eNB_id]->eNB_id;
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RRC_CONFIGURATION_REQ (msg_p).tac = enb_properties[eNB_id]->tac;
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RRC_CONFIGURATION_REQ (msg_p).mcc = enb_properties[eNB_id]->mcc;
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RRC_CONFIGURATION_REQ (msg_p).mnc = enb_properties[eNB_id]->mnc;
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itti_send_msg_to_task (TASK_RRC_ENB, eNB_id, msg_p);
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}
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}
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# if defined(ENABLE_USE_MME)
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static uint32_t eNB_app_register()
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{
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uint32_t eNB_id_start = 0;
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uint32_t eNB_id_end = 1;
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uint32_t eNB_id;
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uint32_t mme_id;
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MessageDef *msg_p;
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uint32_t register_enb_pending = 0;
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# if defined(OAI_EMU)
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eNB_id_start = oai_emulation.info.first_enb_local;
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eNB_id_end = oai_emulation.info.first_enb_local + oai_emulation.info.nb_enb_local;
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DevCheck(eNB_id_end <= NUMBER_OF_eNB_MAX, eNB_id_end, NUMBER_OF_eNB_MAX, 0);
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# endif
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DevCheck(eNB_id_end <= (sizeof(enb_properties) / sizeof(enb_properties[0])), eNB_id_end, (sizeof(enb_properties) / sizeof(enb_properties[0])), 0);
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for (eNB_id = eNB_id_start; (eNB_id < eNB_id_end) ; eNB_id++)
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{
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# if defined(OAI_EMU)
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if (oai_emulation.info.cli_start_enb[eNB_id] == 1)
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# endif
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{
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s1ap_register_enb_req_t *s1ap_register_eNB;
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uint32_t hash;
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/* Overwrite default eNB ID */
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hash = s1ap_generate_eNB_id ();
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enb_properties[eNB_id]->eNB_id = eNB_id + (hash & 0xFFFF8);
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if (EPC_MODE_ENABLED)
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{
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/* Overwrite default IP v4 address by value from command line */
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enb_properties[eNB_id]->mme_ip_address[0].ipv4_address = EPC_MODE_MME_ADDRESS;
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}
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/* note: there is an implicit relationship between the data structure and the message name */
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msg_p = itti_alloc_new_message (TASK_ENB_APP, S1AP_REGISTER_ENB_REQ);
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s1ap_register_eNB = &S1AP_REGISTER_ENB_REQ(msg_p);
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/* Some default/random parameters */
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s1ap_register_eNB->eNB_id = enb_properties[eNB_id]->eNB_id;
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s1ap_register_eNB->cell_type = enb_properties[eNB_id]->cell_type;
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s1ap_register_eNB->eNB_name = enb_properties[eNB_id]->eNB_name;
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s1ap_register_eNB->tac = enb_properties[eNB_id]->tac;
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s1ap_register_eNB->mcc = enb_properties[eNB_id]->mcc;
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s1ap_register_eNB->mnc = enb_properties[eNB_id]->mnc;
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s1ap_register_eNB->default_drx = enb_properties[eNB_id]->default_drx;
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s1ap_register_eNB->nb_mme = enb_properties[eNB_id]->nb_mme;
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DevCheck(s1ap_register_eNB->nb_mme <= S1AP_MAX_NB_MME_IP_ADDRESS, eNB_id, s1ap_register_eNB->nb_mme, S1AP_MAX_NB_MME_IP_ADDRESS);
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for (mme_id = 0; mme_id < s1ap_register_eNB->nb_mme; mme_id++)
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{
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s1ap_register_eNB->mme_ip_address[mme_id].ipv4 = enb_properties[eNB_id]->mme_ip_address[mme_id].ipv4;
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s1ap_register_eNB->mme_ip_address[mme_id].ipv6 = enb_properties[eNB_id]->mme_ip_address[mme_id].ipv6;
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strncpy (s1ap_register_eNB->mme_ip_address[mme_id].ipv4_address,
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enb_properties[eNB_id]->mme_ip_address[mme_id].ipv4_address,
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sizeof(s1ap_register_eNB->mme_ip_address[0].ipv4_address));
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strncpy (s1ap_register_eNB->mme_ip_address[mme_id].ipv6_address,
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enb_properties[eNB_id]->mme_ip_address[mme_id].ipv6_address,
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sizeof(s1ap_register_eNB->mme_ip_address[0].ipv6_address));
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}
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itti_send_msg_to_task (TASK_S1AP, eNB_id, msg_p);
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register_enb_pending++;
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}
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}
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return register_enb_pending;
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}
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# endif
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#endif
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/*------------------------------------------------------------------------------*/
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void *eNB_app_task(void *args_p)
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{
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#if defined(ENABLE_ITTI)
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# if defined(ENABLE_USE_MME)
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static uint32_t register_enb_pending;
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static uint32_t registered_enb;
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static long enb_register_retry_timer_id;
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# endif
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MessageDef *msg_p;
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const char *msg_name;
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instance_t instance;
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int result;
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itti_mark_task_ready (TASK_ENB_APP);
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# if defined(ENABLE_USE_MME)
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# if defined(OAI_EMU)
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enb_nb = oai_emulation.info.nb_enb_local;
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# endif
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# endif
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configure_rrc();
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# if defined(ENABLE_USE_MME)
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/* Try to register each eNB */
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registered_enb = 0;
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register_enb_pending = eNB_app_register ();
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# else
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/* Start L2L1 task */
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msg_p = itti_alloc_new_message(TASK_ENB_APP, INITIALIZE_MESSAGE);
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itti_send_msg_to_task(TASK_L2L1, INSTANCE_DEFAULT, msg_p);
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# endif
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do
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{
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// Wait for a message
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itti_receive_msg (TASK_ENB_APP, &msg_p);
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msg_name = ITTI_MSG_NAME (msg_p);
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instance = ITTI_MSG_INSTANCE (msg_p);
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switch (ITTI_MSG_ID(msg_p))
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{
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case TERMINATE_MESSAGE:
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itti_exit_task ();
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break;
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case MESSAGE_TEST:
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LOG_I(ENB_APP, "Received %s\n", ITTI_MSG_NAME(msg_p));
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break;
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# if defined(ENABLE_USE_MME)
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case S1AP_REGISTER_ENB_CNF:
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LOG_I(ENB_APP, "[eNB %d] Received %s: associated MME %d\n", instance, msg_name,
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S1AP_REGISTER_ENB_CNF(msg_p).nb_mme);
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DevAssert(register_enb_pending > 0);
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register_enb_pending--;
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/* Check if at least eNB is registered with one MME */
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if (S1AP_REGISTER_ENB_CNF(msg_p).nb_mme > 0)
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{
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registered_enb++;
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}
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/* Check if all register eNB requests have been processed */
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if (register_enb_pending == 0)
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{
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if (registered_enb == enb_nb)
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{
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/* If all eNB are registered, start L2L1 task */
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MessageDef *msg_init_p;
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msg_init_p = itti_alloc_new_message (TASK_ENB_APP, INITIALIZE_MESSAGE);
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itti_send_msg_to_task (TASK_L2L1, INSTANCE_DEFAULT, msg_init_p);
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# if defined(OAI_EMU)
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/* If also inform all NAS UE tasks */
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for (instance = NB_eNB_INST + oai_emulation.info.first_ue_local;
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instance < (NB_eNB_INST + oai_emulation.info.first_ue_local + oai_emulation.info.nb_ue_local); instance ++)
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{
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msg_init_p = itti_alloc_new_message (TASK_ENB_APP, INITIALIZE_MESSAGE);
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itti_send_msg_to_task (TASK_NAS_UE, instance, msg_init_p);
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}
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# endif
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}
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else
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{
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uint32_t not_associated = enb_nb - registered_enb;
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LOG_W(ENB_APP, " %d eNB %s not associated with a MME, retrying registration in %d seconds ...\n",
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not_associated, not_associated > 1 ? "are" : "is", ENB_REGISTER_RETRY_DELAY);
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/* Restart the eNB registration process in ENB_REGISTER_RETRY_DELAY seconds */
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if (timer_setup (ENB_REGISTER_RETRY_DELAY, 0, TASK_ENB_APP, INSTANCE_DEFAULT, TIMER_ONE_SHOT,
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NULL, &enb_register_retry_timer_id) < 0)
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{
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LOG_E(ENB_APP, " Can not start eNB register retry timer, use \"sleep\" instead!\n");
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sleep(ENB_REGISTER_RETRY_DELAY);
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/* Restart the registration process */
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registered_enb = 0;
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register_enb_pending = eNB_app_register ();
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}
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}
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}
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break;
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case S1AP_DEREGISTERED_ENB_IND:
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LOG_W(ENB_APP, "[eNB %d] Received %s: associated MME %d\n", instance, msg_name,
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S1AP_DEREGISTERED_ENB_IND(msg_p).nb_mme);
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/* TODO handle recovering of registration */
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break;
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case TIMER_HAS_EXPIRED:
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LOG_I(ENB_APP, " Received %s: timer_id %d\n", msg_name, TIMER_HAS_EXPIRED(msg_p).timer_id);
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if (TIMER_HAS_EXPIRED (msg_p).timer_id == enb_register_retry_timer_id)
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{
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/* Restart the registration process */
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registered_enb = 0;
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register_enb_pending = eNB_app_register ();
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}
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break;
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# endif
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default:
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LOG_E(ENB_APP, "Received unexpected message %s\n", msg_name);
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break;
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}
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result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
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AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
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} while (1);
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#endif
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return NULL;
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}
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