Holger Hans Peter Freyther | 43b0909 | 2010-06-15 11:52:51 +0800 | [diff] [blame] | 1 | /* main MSC management code... */ |
| 2 | |
| 3 | /* |
Holger Hans Peter Freyther | e7bd863 | 2013-06-30 15:30:47 +0200 | [diff] [blame] | 4 | * (C) 2010,2013 by Holger Hans Peter Freyther <zecke@selfish.org> |
Holger Hans Peter Freyther | 85531cc | 2010-10-06 20:37:09 +0800 | [diff] [blame] | 5 | * (C) 2010 by On-Waves |
Holger Hans Peter Freyther | 43b0909 | 2010-06-15 11:52:51 +0800 | [diff] [blame] | 6 | * |
| 7 | * All Rights Reserved |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 10 | * it under the terms of the GNU Affero General Public License as published by |
| 11 | * the Free Software Foundation; either version 3 of the License, or |
Holger Hans Peter Freyther | 43b0909 | 2010-06-15 11:52:51 +0800 | [diff] [blame] | 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 17 | * GNU Affero General Public License for more details. |
Holger Hans Peter Freyther | 43b0909 | 2010-06-15 11:52:51 +0800 | [diff] [blame] | 18 | * |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 19 | * You should have received a copy of the GNU Affero General Public License |
| 20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Holger Hans Peter Freyther | 43b0909 | 2010-06-15 11:52:51 +0800 | [diff] [blame] | 21 | * |
| 22 | */ |
| 23 | |
Neels Hofmeyr | 9084396 | 2017-09-04 15:04:35 +0200 | [diff] [blame] | 24 | #include <osmocom/msc/osmo_msc.h> |
Neels Hofmeyr | 9084396 | 2017-09-04 15:04:35 +0200 | [diff] [blame] | 25 | #include <osmocom/msc/debug.h> |
| 26 | #include <osmocom/msc/transaction.h> |
| 27 | #include <osmocom/msc/db.h> |
| 28 | #include <osmocom/msc/vlr.h> |
| 29 | #include <osmocom/msc/osmo_msc.h> |
| 30 | #include <osmocom/msc/a_iface.h> |
Max | 43b01b0 | 2017-09-15 11:22:30 +0200 | [diff] [blame] | 31 | #include <osmocom/msc/gsm_04_08.h> |
Neels Hofmeyr | 9084396 | 2017-09-04 15:04:35 +0200 | [diff] [blame] | 32 | #include <osmocom/msc/gsm_04_11.h> |
Holger Hans Peter Freyther | 6a3d765 | 2010-06-15 12:03:10 +0800 | [diff] [blame] | 33 | |
Neels Hofmeyr | 00e82d6 | 2017-07-05 15:19:52 +0200 | [diff] [blame] | 34 | #include "../../bscconfig.h" |
| 35 | #ifdef BUILD_IU |
| 36 | #include <osmocom/ranap/iu_client.h> |
| 37 | #else |
Neels Hofmeyr | 9084396 | 2017-09-04 15:04:35 +0200 | [diff] [blame] | 38 | #include <osmocom/msc/iu_dummy.h> |
Neels Hofmeyr | 00e82d6 | 2017-07-05 15:19:52 +0200 | [diff] [blame] | 39 | #endif |
| 40 | |
Neels Hofmeyr | 55014d0 | 2018-03-22 16:43:40 +0100 | [diff] [blame] | 41 | struct gsm_network *gsm_network_init(void *ctx, mncc_recv_cb_t mncc_recv) |
| 42 | { |
| 43 | struct gsm_network *net; |
| 44 | |
| 45 | net = talloc_zero(ctx, struct gsm_network); |
| 46 | if (!net) |
| 47 | return NULL; |
| 48 | |
| 49 | net->plmn = (struct osmo_plmn_id){ .mcc=1, .mnc=1 }; |
| 50 | |
| 51 | /* Permit a compile-time default of A5/3 and A5/1 */ |
| 52 | net->a5_encryption_mask = (1 << 3) | (1 << 1); |
| 53 | |
| 54 | /* Use 30 min periodic update interval as sane default */ |
| 55 | net->t3212 = 5; |
| 56 | |
| 57 | net->paging_response_timer = MSC_PAGING_RESPONSE_TIMER_DEFAULT; |
| 58 | |
| 59 | INIT_LLIST_HEAD(&net->trans_list); |
| 60 | INIT_LLIST_HEAD(&net->upqueue); |
| 61 | INIT_LLIST_HEAD(&net->subscr_conns); |
| 62 | |
| 63 | /* init statistics */ |
| 64 | net->msc_ctrs = rate_ctr_group_alloc(net, &msc_ctrg_desc, 0); |
| 65 | if (!net->msc_ctrs) { |
| 66 | talloc_free(net); |
| 67 | return NULL; |
| 68 | } |
| 69 | net->active_calls = osmo_counter_alloc("msc.active_calls"); |
Vadim Yanitskiy | ad64e2a | 2018-06-26 18:27:25 +0700 | [diff] [blame] | 70 | net->active_nc_ss = osmo_counter_alloc("msc.active_nc_ss"); |
Neels Hofmeyr | 55014d0 | 2018-03-22 16:43:40 +0100 | [diff] [blame] | 71 | |
| 72 | net->mncc_recv = mncc_recv; |
| 73 | |
| 74 | INIT_LLIST_HEAD(&net->a.bscs); |
| 75 | |
| 76 | return net; |
| 77 | } |
| 78 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 79 | /* Receive a SAPI-N-REJECT from BSC */ |
Philipp Maier | fbf6610 | 2017-04-09 12:32:51 +0200 | [diff] [blame] | 80 | void msc_sapi_n_reject(struct gsm_subscriber_connection *conn, int dlci) |
Holger Hans Peter Freyther | 43b0909 | 2010-06-15 11:52:51 +0800 | [diff] [blame] | 81 | { |
Holger Hans Peter Freyther | 6a3d765 | 2010-06-15 12:03:10 +0800 | [diff] [blame] | 82 | int sapi = dlci & 0x7; |
| 83 | |
| 84 | if (sapi == UM_SAPI_SMS) |
| 85 | gsm411_sapi_n_reject(conn); |
Holger Hans Peter Freyther | 43b0909 | 2010-06-15 11:52:51 +0800 | [diff] [blame] | 86 | } |
| 87 | |
Neels Hofmeyr | e2f24d5 | 2017-05-08 15:12:20 +0200 | [diff] [blame] | 88 | /* receive a Level 3 Complete message and return MSC_CONN_ACCEPT or |
| 89 | * MSC_CONN_REJECT */ |
Neels Hofmeyr | 84da6b1 | 2016-05-20 21:59:55 +0200 | [diff] [blame] | 90 | int msc_compl_l3(struct gsm_subscriber_connection *conn, |
| 91 | struct msgb *msg, uint16_t chosen_channel) |
Holger Hans Peter Freyther | 9764331 | 2010-06-17 16:41:25 +0800 | [diff] [blame] | 92 | { |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 93 | msc_subscr_conn_get(conn, MSC_CONN_USE_COMPL_L3); |
Holger Hans Peter Freyther | 9764331 | 2010-06-17 16:41:25 +0800 | [diff] [blame] | 94 | gsm0408_dispatch(conn, msg); |
| 95 | |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 96 | msc_subscr_conn_put(conn, MSC_CONN_USE_COMPL_L3); |
Neels Hofmeyr | 84da6b1 | 2016-05-20 21:59:55 +0200 | [diff] [blame] | 97 | |
| 98 | /* Always return acceptance, because even if the conn was not accepted, |
| 99 | * we assumed ownership of it and the caller shall not interfere with |
| 100 | * that. We may even already have discarded the conn. */ |
Neels Hofmeyr | e2f24d5 | 2017-05-08 15:12:20 +0200 | [diff] [blame] | 101 | return MSC_CONN_ACCEPT; |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 102 | |
| 103 | #if 0 |
Holger Hans Peter Freyther | e9f420d | 2016-02-10 10:42:20 +0100 | [diff] [blame] | 104 | /* |
| 105 | * If this is a silent call we want the channel to remain open as long as |
| 106 | * possible and this is why we accept this connection regardless of any |
| 107 | * pending transaction or ongoing operation. |
| 108 | */ |
Holger Hans Peter Freyther | 70ae5d3 | 2012-11-23 21:33:15 +0100 | [diff] [blame] | 109 | if (conn->silent_call) |
Neels Hofmeyr | e2f24d5 | 2017-05-08 15:12:20 +0200 | [diff] [blame] | 110 | return MSC_CONN_ACCEPT; |
| 111 | if (conn->loc_operation || conn->sec_operation || conn->anch_operation) |
| 112 | return MSC_CONN_ACCEPT; |
Holger Hans Peter Freyther | 70ae5d3 | 2012-11-23 21:33:15 +0100 | [diff] [blame] | 113 | if (trans_has_conn(conn)) |
Neels Hofmeyr | e2f24d5 | 2017-05-08 15:12:20 +0200 | [diff] [blame] | 114 | return MSC_CONN_ACCEPT; |
Jacob Erlbeck | 8e68b56 | 2014-01-30 21:01:12 +0100 | [diff] [blame] | 115 | |
| 116 | LOGP(DRR, LOGL_INFO, "MSC Complete L3: Rejecting connection.\n"); |
Neels Hofmeyr | e2f24d5 | 2017-05-08 15:12:20 +0200 | [diff] [blame] | 117 | return MSC_CONN_REJECT; |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 118 | #endif |
Holger Hans Peter Freyther | 9764331 | 2010-06-17 16:41:25 +0800 | [diff] [blame] | 119 | } |
| 120 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 121 | /* Receive a DTAP message from BSC */ |
Neels Hofmeyr | 84da6b1 | 2016-05-20 21:59:55 +0200 | [diff] [blame] | 122 | void msc_dtap(struct gsm_subscriber_connection *conn, uint8_t link_id, struct msgb *msg) |
Holger Hans Peter Freyther | 9764331 | 2010-06-17 16:41:25 +0800 | [diff] [blame] | 123 | { |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 124 | msc_subscr_conn_get(conn, MSC_CONN_USE_DTAP); |
Holger Hans Peter Freyther | 9764331 | 2010-06-17 16:41:25 +0800 | [diff] [blame] | 125 | gsm0408_dispatch(conn, msg); |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 126 | |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 127 | msc_subscr_conn_put(conn, MSC_CONN_USE_DTAP); |
Holger Hans Peter Freyther | 9764331 | 2010-06-17 16:41:25 +0800 | [diff] [blame] | 128 | } |
| 129 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 130 | /* Receive an ASSIGNMENT COMPLETE from BSC */ |
Philipp Maier | fbf6610 | 2017-04-09 12:32:51 +0200 | [diff] [blame] | 131 | void msc_assign_compl(struct gsm_subscriber_connection *conn, |
| 132 | uint8_t rr_cause, uint8_t chosen_channel, |
| 133 | uint8_t encr_alg_id, uint8_t speec) |
Holger Hans Peter Freyther | 40aac3f | 2011-12-27 12:31:02 +0100 | [diff] [blame] | 134 | { |
Jacob Erlbeck | 8e68b56 | 2014-01-30 21:01:12 +0100 | [diff] [blame] | 135 | LOGP(DRR, LOGL_DEBUG, "MSC assign complete (do nothing).\n"); |
Holger Hans Peter Freyther | 40aac3f | 2011-12-27 12:31:02 +0100 | [diff] [blame] | 136 | } |
| 137 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 138 | /* Receive an ASSIGNMENT FAILURE from BSC */ |
Philipp Maier | fbf6610 | 2017-04-09 12:32:51 +0200 | [diff] [blame] | 139 | void msc_assign_fail(struct gsm_subscriber_connection *conn, |
| 140 | uint8_t cause, uint8_t *rr_cause) |
Holger Hans Peter Freyther | 40aac3f | 2011-12-27 12:31:02 +0100 | [diff] [blame] | 141 | { |
Jacob Erlbeck | 8e68b56 | 2014-01-30 21:01:12 +0100 | [diff] [blame] | 142 | LOGP(DRR, LOGL_DEBUG, "MSC assign failure (do nothing).\n"); |
Holger Hans Peter Freyther | 40aac3f | 2011-12-27 12:31:02 +0100 | [diff] [blame] | 143 | } |
| 144 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 145 | /* Receive a CLASSMARK CHANGE from BSC */ |
Philipp Maier | fbf6610 | 2017-04-09 12:32:51 +0200 | [diff] [blame] | 146 | void msc_classmark_chg(struct gsm_subscriber_connection *conn, |
| 147 | const uint8_t *cm2, uint8_t cm2_len, |
| 148 | const uint8_t *cm3, uint8_t cm3_len) |
Harald Welte | 95e862c | 2012-01-23 10:28:35 +0100 | [diff] [blame] | 149 | { |
Neels Hofmeyr | 986fe7e | 2018-09-13 03:05:52 +0200 | [diff] [blame] | 150 | struct gsm_classmark *cm = &conn->vsub->classmark; |
| 151 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 152 | if (cm2 && cm2_len) { |
Neels Hofmeyr | 986fe7e | 2018-09-13 03:05:52 +0200 | [diff] [blame] | 153 | if (cm2_len > sizeof(cm->classmark2)) { |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 154 | LOGP(DRR, LOGL_NOTICE, "%s: classmark2 is %u bytes, truncating at %zu bytes\n", |
Neels Hofmeyr | 986fe7e | 2018-09-13 03:05:52 +0200 | [diff] [blame] | 155 | vlr_subscr_name(conn->vsub), cm2_len, sizeof(cm->classmark2)); |
| 156 | cm2_len = sizeof(cm->classmark2); |
Harald Welte | 95e862c | 2012-01-23 10:28:35 +0100 | [diff] [blame] | 157 | } |
Neels Hofmeyr | 986fe7e | 2018-09-13 03:05:52 +0200 | [diff] [blame] | 158 | cm->classmark2_len = cm2_len; |
| 159 | memcpy(cm->classmark2, cm2, cm2_len); |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 160 | } |
| 161 | if (cm3 && cm3_len) { |
Neels Hofmeyr | 986fe7e | 2018-09-13 03:05:52 +0200 | [diff] [blame] | 162 | if (cm3_len > sizeof(cm->classmark3)) { |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 163 | LOGP(DRR, LOGL_NOTICE, "%s: classmark3 is %u bytes, truncating at %zu bytes\n", |
Neels Hofmeyr | 986fe7e | 2018-09-13 03:05:52 +0200 | [diff] [blame] | 164 | vlr_subscr_name(conn->vsub), cm3_len, sizeof(cm->classmark3)); |
| 165 | cm3_len = sizeof(cm->classmark3); |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 166 | } |
Neels Hofmeyr | 986fe7e | 2018-09-13 03:05:52 +0200 | [diff] [blame] | 167 | cm->classmark3_len = cm3_len; |
| 168 | memcpy(cm->classmark3, cm3, cm3_len); |
Harald Welte | 95e862c | 2012-01-23 10:28:35 +0100 | [diff] [blame] | 169 | } |
| 170 | } |
| 171 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 172 | /* Receive a CIPHERING MODE COMPLETE from BSC */ |
Neels Hofmeyr | 84da6b1 | 2016-05-20 21:59:55 +0200 | [diff] [blame] | 173 | void msc_cipher_mode_compl(struct gsm_subscriber_connection *conn, |
| 174 | struct msgb *msg, uint8_t alg_id) |
Harald Welte | cf149ee | 2012-01-23 16:40:24 +0100 | [diff] [blame] | 175 | { |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 176 | struct vlr_ciph_result ciph_res = { .cause = VLR_CIPH_REJECT }; |
Harald Welte | cf149ee | 2012-01-23 16:40:24 +0100 | [diff] [blame] | 177 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 178 | if (!conn) { |
Harald Welte | 284c39a | 2018-01-24 22:38:06 +0100 | [diff] [blame] | 179 | LOGP(DRR, LOGL_ERROR, "invalid: rx Ciphering Mode Complete on NULL conn\n"); |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 180 | return; |
| 181 | } |
| 182 | if (!conn->vsub) { |
Harald Welte | 284c39a | 2018-01-24 22:38:06 +0100 | [diff] [blame] | 183 | LOGP(DRR, LOGL_ERROR, "invalid: rx Ciphering Mode Complete for NULL subscr\n"); |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 184 | return; |
Harald Welte | cf149ee | 2012-01-23 16:40:24 +0100 | [diff] [blame] | 185 | } |
| 186 | |
Harald Welte | 284c39a | 2018-01-24 22:38:06 +0100 | [diff] [blame] | 187 | DEBUGP(DRR, "%s: CIPHERING MODE COMPLETE\n", vlr_subscr_name(conn->vsub)); |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 188 | |
Harald Welte | 284c39a | 2018-01-24 22:38:06 +0100 | [diff] [blame] | 189 | if (msg) { |
| 190 | struct gsm48_hdr *gh = msgb_l3(msg); |
| 191 | unsigned int payload_len = msgb_l3len(msg) - sizeof(*gh); |
| 192 | struct tlv_parsed tp; |
| 193 | uint8_t mi_type; |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 194 | |
Harald Welte | 284c39a | 2018-01-24 22:38:06 +0100 | [diff] [blame] | 195 | if (!gh) { |
| 196 | LOGP(DRR, LOGL_ERROR, "invalid: msgb without l3 header\n"); |
| 197 | return; |
| 198 | } |
| 199 | |
| 200 | tlv_parse(&tp, &gsm48_att_tlvdef, gh->data, payload_len, 0, 0); |
| 201 | |
| 202 | /* bearer capability */ |
| 203 | if (TLVP_PRESENT(&tp, GSM48_IE_MOBILE_ID)) { |
| 204 | mi_type = TLVP_VAL(&tp, GSM48_IE_MOBILE_ID)[0] & GSM_MI_TYPE_MASK; |
| 205 | if (mi_type == GSM_MI_TYPE_IMEISV |
| 206 | && TLVP_LEN(&tp, GSM48_IE_MOBILE_ID) > 0) { |
Neels Hofmeyr | fa10eda | 2018-03-13 01:22:01 +0100 | [diff] [blame] | 207 | gsm48_mi_to_string(ciph_res.imeisv, sizeof(ciph_res.imeisv), |
Harald Welte | 284c39a | 2018-01-24 22:38:06 +0100 | [diff] [blame] | 208 | TLVP_VAL(&tp, GSM48_IE_MOBILE_ID), |
| 209 | TLVP_LEN(&tp, GSM48_IE_MOBILE_ID)); |
Harald Welte | 284c39a | 2018-01-24 22:38:06 +0100 | [diff] [blame] | 210 | } |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 211 | } |
| 212 | } |
| 213 | |
| 214 | ciph_res.cause = VLR_CIPH_COMPL; |
| 215 | vlr_subscr_rx_ciph_res(conn->vsub, &ciph_res); |
Harald Welte | cf149ee | 2012-01-23 16:40:24 +0100 | [diff] [blame] | 216 | } |
| 217 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 218 | /* Receive a CLEAR REQUEST from BSC */ |
Philipp Maier | fbf6610 | 2017-04-09 12:32:51 +0200 | [diff] [blame] | 219 | int msc_clear_request(struct gsm_subscriber_connection *conn, uint32_t cause) |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 220 | { |
| 221 | msc_subscr_conn_close(conn, cause); |
| 222 | return 1; |
| 223 | } |
| 224 | |
Neels Hofmeyr | 99a8d23 | 2018-04-09 20:44:56 +0200 | [diff] [blame] | 225 | static const char *used_ref_counts_str(struct gsm_subscriber_connection *conn) |
| 226 | { |
| 227 | static char buf[256]; |
| 228 | int bit_nr; |
| 229 | char *pos = buf; |
| 230 | *pos = '\0'; |
| 231 | |
| 232 | if (conn->use_tokens < 0) |
| 233 | return "invalid"; |
| 234 | |
| 235 | #define APPEND_STR(fmt, args...) do { \ |
| 236 | int remain = sizeof(buf) - (pos - buf) - 1; \ |
| 237 | int l = -1; \ |
| 238 | if (remain > 0) \ |
| 239 | l = snprintf(pos, remain, "%s" fmt, (pos == buf? "" : ","), ##args); \ |
| 240 | if (l < 0 || l > remain) { \ |
| 241 | buf[sizeof(buf) - 1] = '\0'; \ |
| 242 | return buf; \ |
| 243 | } \ |
| 244 | pos += l; \ |
| 245 | } while(0) |
| 246 | |
| 247 | for (bit_nr = 0; (1 << bit_nr) <= conn->use_tokens; bit_nr++) { |
| 248 | if (conn->use_tokens & (1 << bit_nr)) { |
| 249 | APPEND_STR("%s", get_value_string(msc_subscr_conn_use_names, bit_nr)); |
| 250 | } |
| 251 | } |
| 252 | return buf; |
| 253 | #undef APPEND_STR |
| 254 | } |
| 255 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 256 | /* increment the ref-count. Needs to be called by every user */ |
| 257 | struct gsm_subscriber_connection * |
| 258 | _msc_subscr_conn_get(struct gsm_subscriber_connection *conn, |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 259 | enum msc_subscr_conn_use balance_token, |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 260 | const char *file, int line) |
| 261 | { |
| 262 | OSMO_ASSERT(conn); |
Holger Hans Peter Freyther | e7bd863 | 2013-06-30 15:30:47 +0200 | [diff] [blame] | 263 | |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 264 | if (balance_token != MSC_CONN_USE_UNTRACKED) { |
| 265 | uint32_t flag = 1 << balance_token; |
| 266 | OSMO_ASSERT(balance_token < 32); |
| 267 | if (conn->use_tokens & flag) |
| 268 | LOGPSRC(DREF, LOGL_ERROR, file, line, |
| 269 | "%s: MSC conn use error: using an already used token: %s\n", |
| 270 | vlr_subscr_name(conn->vsub), |
| 271 | msc_subscr_conn_use_name(balance_token)); |
| 272 | conn->use_tokens |= flag; |
| 273 | } |
| 274 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 275 | conn->use_count++; |
| 276 | LOGPSRC(DREF, LOGL_DEBUG, file, line, |
Neels Hofmeyr | 99a8d23 | 2018-04-09 20:44:56 +0200 | [diff] [blame] | 277 | "%s: MSC conn use + %s == %u (0x%x: %s)\n", |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 278 | vlr_subscr_name(conn->vsub), msc_subscr_conn_use_name(balance_token), |
Neels Hofmeyr | 99a8d23 | 2018-04-09 20:44:56 +0200 | [diff] [blame] | 279 | conn->use_count, conn->use_tokens, used_ref_counts_str(conn)); |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 280 | |
| 281 | return conn; |
| 282 | } |
| 283 | |
| 284 | /* decrement the ref-count. Once it reaches zero, we release */ |
| 285 | void _msc_subscr_conn_put(struct gsm_subscriber_connection *conn, |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 286 | enum msc_subscr_conn_use balance_token, |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 287 | const char *file, int line) |
| 288 | { |
| 289 | OSMO_ASSERT(conn); |
| 290 | |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 291 | if (balance_token != MSC_CONN_USE_UNTRACKED) { |
| 292 | uint32_t flag = 1 << balance_token; |
| 293 | OSMO_ASSERT(balance_token < 32); |
| 294 | if (!(conn->use_tokens & flag)) |
| 295 | LOGPSRC(DREF, LOGL_ERROR, file, line, |
| 296 | "%s: MSC conn use error: freeing an unused token: %s\n", |
| 297 | vlr_subscr_name(conn->vsub), |
| 298 | msc_subscr_conn_use_name(balance_token)); |
| 299 | conn->use_tokens &= ~flag; |
| 300 | } |
| 301 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 302 | if (conn->use_count == 0) { |
| 303 | LOGPSRC(DREF, LOGL_ERROR, file, line, |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 304 | "%s: MSC conn use - %s failed: is already 0\n", |
| 305 | vlr_subscr_name(conn->vsub), |
| 306 | msc_subscr_conn_use_name(balance_token)); |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 307 | return; |
| 308 | } |
| 309 | |
| 310 | conn->use_count--; |
| 311 | LOGPSRC(DREF, LOGL_DEBUG, file, line, |
Neels Hofmeyr | 99a8d23 | 2018-04-09 20:44:56 +0200 | [diff] [blame] | 312 | "%s: MSC conn use - %s == %u (0x%x: %s)\n", |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 313 | vlr_subscr_name(conn->vsub), msc_subscr_conn_use_name(balance_token), |
Neels Hofmeyr | 99a8d23 | 2018-04-09 20:44:56 +0200 | [diff] [blame] | 314 | conn->use_count, conn->use_tokens, used_ref_counts_str(conn)); |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 315 | |
Neels Hofmeyr | 84da6b1 | 2016-05-20 21:59:55 +0200 | [diff] [blame] | 316 | if (conn->use_count == 0) |
Neels Hofmeyr | e3d3dc6 | 2018-03-31 00:02:14 +0200 | [diff] [blame] | 317 | osmo_fsm_inst_dispatch(conn->fi, SUBSCR_CONN_E_UNUSED, NULL); |
Neels Hofmeyr | 84da6b1 | 2016-05-20 21:59:55 +0200 | [diff] [blame] | 318 | } |
| 319 | |
Neels Hofmeyr | 4068ab2 | 2018-04-01 20:55:54 +0200 | [diff] [blame] | 320 | bool msc_subscr_conn_used_by(struct gsm_subscriber_connection *conn, enum msc_subscr_conn_use token) |
| 321 | { |
| 322 | return conn && (conn->use_tokens & (1 << token)); |
| 323 | } |
| 324 | |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 325 | const struct value_string msc_subscr_conn_use_names[] = { |
| 326 | {MSC_CONN_USE_UNTRACKED, "UNTRACKED"}, |
| 327 | {MSC_CONN_USE_COMPL_L3, "compl_l3"}, |
| 328 | {MSC_CONN_USE_DTAP, "dtap"}, |
Neels Hofmeyr | e3d3dc6 | 2018-03-31 00:02:14 +0200 | [diff] [blame] | 329 | {MSC_CONN_USE_AUTH_CIPH, "auth+ciph"}, |
| 330 | {MSC_CONN_USE_CM_SERVICE, "cm_service"}, |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 331 | {MSC_CONN_USE_TRANS_CC, "trans_cc"}, |
| 332 | {MSC_CONN_USE_TRANS_SMS, "trans_sms"}, |
Vadim Yanitskiy | 846efcb | 2018-06-10 22:22:49 +0700 | [diff] [blame] | 333 | {MSC_CONN_USE_TRANS_NC_SS, "trans_nc_ss"}, |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 334 | {MSC_CONN_USE_SILENT_CALL, "silent_call"}, |
Neels Hofmeyr | e3d3dc6 | 2018-03-31 00:02:14 +0200 | [diff] [blame] | 335 | {MSC_CONN_USE_RELEASE, "release"}, |
Neels Hofmeyr | 6166f29 | 2017-11-22 14:33:12 +0100 | [diff] [blame] | 336 | {0, NULL}, |
| 337 | }; |
| 338 | |
Neels Hofmeyr | 84da6b1 | 2016-05-20 21:59:55 +0200 | [diff] [blame] | 339 | void msc_stop_paging(struct vlr_subscr *vsub) |
| 340 | { |
| 341 | DEBUGP(DPAG, "Paging can stop for %s\n", vlr_subscr_name(vsub)); |
| 342 | /* tell BSCs and RNCs to stop paging? How? */ |
Holger Hans Peter Freyther | 4049455 | 2010-06-28 17:09:29 +0800 | [diff] [blame] | 343 | } |