enb_app.c 8.03 KB
Newer Older
winckel's avatar
winckel committed
1
2
/*******************************************************************************

3
4
 Eurecom OpenAirInterface
 Copyright(c) 1999 - 2012 Eurecom
winckel's avatar
winckel committed
5

6
7
8
 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.
winckel's avatar
winckel committed
9

10
11
12
13
 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.
winckel's avatar
winckel committed
14

15
16
17
 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.
winckel's avatar
winckel committed
18

19
20
 The full GNU General Public License is included in this distribution in
 the file called "COPYING".
winckel's avatar
winckel committed
21

22
23
24
25
26
27
 Contact Information
 Openair Admin: openair_admin@eurecom.fr
 Openair Tech : openair_tech@eurecom.fr
 Forums       : http://forums.eurecom.fr/openairinterface
 Address      : EURECOM, Campus SophiaTech, 450 Route des Chappes
 06410 Biot FRANCE
winckel's avatar
winckel committed
28

29
 *******************************************************************************/
winckel's avatar
winckel committed
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53

#include <string.h>

#include "enb_app.h"
#include "assertions.h"

#include "log.h"
#if defined(OAI_EMU)
# include "OCG.h"
# include "OCG_extern.h"
#endif

#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
# include "timer.h"
# if defined(ENABLE_USE_MME)
#   include "s1ap_eNB.h"
#   include "sctp_eNB_task.h"
# endif
#endif

#if defined(ENABLE_ITTI)
# if defined(ENABLE_USE_MME)

54
/*------------------------------------------------------------------------------*/
winckel's avatar
winckel committed
55
56
#define ENB_REGISTER_RETRY_DELAY 10

57
58
59
60
/*------------------------------------------------------------------------------*/
static uint32_t enb_nb = 1;

/*------------------------------------------------------------------------------*/
winckel's avatar
winckel committed
61
62
static uint32_t eNB_app_register()
{
63
64
65
66
67
68
69
70
71
72
    uint32_t eNB_id_start = 0;
    uint32_t eNB_id_end = 1;
    uint32_t eNB_id;
    MessageDef *msg_p;
    uint32_t register_enb_pending = 0;

#   if defined(OAI_EMU)
    eNB_id_start = oai_emulation.info.first_enb_local;
    eNB_id_end = oai_emulation.info.first_enb_local + oai_emulation.info.nb_enb_local;
#   endif
winckel's avatar
winckel committed
73

74
75
76
77
78
79
80
    for (eNB_id = eNB_id_start; (eNB_id < eNB_id_end)
#   if defined(OAI_EMU)
            && (oai_emulation.info.cli_start_enb[eNB_id] == 1)
#   endif
            ; eNB_id++)
    {
        char *mme_address_v4;
winckel's avatar
winckel committed
81

82
83
84
85
86
87
88
89
90
91
92
        if (EPC_MODE_ENABLED)
        {
            mme_address_v4 = EPC_MODE_MME_ADDRESS;
        }
        else
        {
            mme_address_v4 = "192.168.12.87";
        }
        char *mme_address_v6 = "2001:660:5502:12:30da:829a:2343:b6cf";
        s1ap_register_enb_req_t *s1ap_register_eNB;
        uint32_t hash;
winckel's avatar
winckel committed
93

94
95
        //note:  there is an implicit relationship between the data struct and the message name
        msg_p = itti_alloc_new_message (TASK_ENB_APP, S1AP_REGISTER_ENB_REQ);
winckel's avatar
winckel committed
96

97
        s1ap_register_eNB = &S1AP_REGISTER_ENB_REQ(msg_p);
winckel's avatar
winckel committed
98

99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
        hash = s1ap_generate_eNB_id ();

        /* Some default/random parameters */
        s1ap_register_eNB->eNB_id = eNB_id + (hash & 0xFFFF8);
        s1ap_register_eNB->cell_type = CELL_MACRO_ENB;
        s1ap_register_eNB->tac = 0;
        s1ap_register_eNB->mcc = 208;
        s1ap_register_eNB->mnc = 34;
        s1ap_register_eNB->default_drx = PAGING_DRX_256;

        s1ap_register_eNB->nb_mme = 1;
        s1ap_register_eNB->mme_ip_address[0].ipv4 = 1;
        s1ap_register_eNB->mme_ip_address[0].ipv6 = 0;
        memcpy (s1ap_register_eNB->mme_ip_address[0].ipv4_address, mme_address_v4, strlen (mme_address_v4));
        memcpy (s1ap_register_eNB->mme_ip_address[0].ipv6_address, mme_address_v6, strlen (mme_address_v6));
winckel's avatar
winckel committed
114
115

#   if defined ENB_APP_ENB_REGISTER_2_MME
116
117
118
119
120
121
        s1ap_register_eNB->nb_mme = 2;
        s1ap_register_eNB->mme_ip_address[1].ipv4 = 1;
        s1ap_register_eNB->mme_ip_address[1].ipv6 = 0;
        mme_address_v4 = "192.168.12.88";
        memcpy(s1ap_register_eNB->mme_ip_address[1].ipv4_address, mme_address_v4, strlen(mme_address_v4));
        memcpy(s1ap_register_eNB->mme_ip_address[1].ipv6_address, mme_address_v6, strlen(mme_address_v6));
winckel's avatar
winckel committed
122
123
#   endif

124
        itti_send_msg_to_task (TASK_S1AP, eNB_id, msg_p);
winckel's avatar
winckel committed
125

126
127
        register_enb_pending++;
    }
winckel's avatar
winckel committed
128

129
    return register_enb_pending;
winckel's avatar
winckel committed
130
131
132
133
}
# endif
#endif

134
135
136
/*------------------------------------------------------------------------------*/
void *eNB_app_task(void *args_p)
{
winckel's avatar
winckel committed
137
138
#if defined(ENABLE_ITTI)
# if defined(ENABLE_USE_MME)
139
140
141
142
143
144
145
146
147
148
149
    static uint32_t register_enb_pending;
    static uint32_t registered_enb;
    static long enb_register_retry_timer_id;
# endif
    MessageDef *msg_p;
    const char *msg_name;
    instance_t instance;
    itti_mark_task_ready (TASK_ENB_APP);

# if defined(OAI_EMU)
    enb_nb = oai_emulation.info.nb_enb_local;
winckel's avatar
winckel committed
150
151
152
# endif

# if defined(ENABLE_USE_MME)
153
154
155
    /* Try to register each eNB */
    registered_enb = 0;
    register_enb_pending = eNB_app_register ();
winckel's avatar
winckel committed
156
# else
157
158
159
    /* Start L2L1 task */
    msg_p = itti_alloc_new_message(TASK_ENB_APP, INITIALIZE_MESSAGE);
    itti_send_msg_to_task(TASK_L2L1, INSTANCE_DEFAULT, msg_p);
winckel's avatar
winckel committed
160
161
# endif

162
163
164
165
    do
    {
        // Wait for a message
        itti_receive_msg (TASK_ENB_APP, &msg_p);
winckel's avatar
winckel committed
166

167
168
        msg_name = ITTI_MSG_NAME (msg_p);
        instance = ITTI_MSG_INSTANCE (msg_p);
winckel's avatar
winckel committed
169

170
171
172
173
174
        switch (ITTI_MSG_ID(msg_p))
        {
            case TERMINATE_MESSAGE:
                itti_exit_task ();
                break;
winckel's avatar
winckel committed
175

176
177
178
            case MESSAGE_TEST:
                LOG_I(EMU, "Received %s\n", ITTI_MSG_NAME(msg_p));
                break;
winckel's avatar
winckel committed
179
180

# if defined(ENABLE_USE_MME)
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
            case S1AP_REGISTER_ENB_CNF:
                LOG_I(EMU,
                      "[eNB %d] Received %s: associated MME %d\n", instance, msg_name, S1AP_REGISTER_ENB_CNF(msg_p).nb_mme);

                DevAssert(register_enb_pending > 0);
                register_enb_pending--;

                /* Check if at least eNB is registered with one MME */
                if (S1AP_REGISTER_ENB_CNF(msg_p).nb_mme > 0)
                {
                    registered_enb++;
                }

                /* Check if all register eNB requests have been processed */
                if (register_enb_pending == 0)
                {
                    if (registered_enb == enb_nb)
                    {
                        /* If all eNB are registered, start L2L1 task */
                        MessageDef *msg_init_p;

                        msg_init_p = itti_alloc_new_message (TASK_ENB_APP, INITIALIZE_MESSAGE);
                        itti_send_msg_to_task (TASK_L2L1, INSTANCE_DEFAULT, msg_init_p);
                    }
                    else
                    {
                        uint32_t not_associated = enb_nb - registered_enb;

                        LOG_W(EMU, " %d eNB %s not associated with a MME, retrying registration in %d seconds ...\n",
                              not_associated, not_associated > 1 ? "are" : "is", ENB_REGISTER_RETRY_DELAY);

                        /* Restart the eNB registration process in ENB_REGISTER_RETRY_DELAY seconds */
                        if (timer_setup (ENB_REGISTER_RETRY_DELAY, 0, TASK_ENB_APP, INSTANCE_DEFAULT, TIMER_ONE_SHOT,
                                         NULL, &enb_register_retry_timer_id) < 0)
                        {
                            LOG_E(EMU, " Can not start eNB register retry timer!\n");
                        }
                    }
                }
                break;

            case TIMER_HAS_EXPIRED:
                LOG_I(EMU, " Received %s: timer_id %d\n", msg_name, TIMER_HAS_EXPIRED(msg_p).timer_id);

                if (TIMER_HAS_EXPIRED (msg_p).timer_id == enb_register_retry_timer_id)
                {
                    /* Restart the registration process */
                    registered_enb = 0;
                    register_enb_pending = eNB_app_register ();
                }
                break;
winckel's avatar
winckel committed
232
233
# endif

234
235
236
237
            default:
                LOG_E(EMU, "Received unexpected message %s\n", msg_name);
                break;
        }
winckel's avatar
winckel committed
238

239
240
        free (msg_p);
    } while (1);
winckel's avatar
winckel committed
241
242
#endif

243
    return NULL;
winckel's avatar
winckel committed
244
}