Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 1 | /* GPRS SGSN functionality */ |
| 2 | |
| 3 | /* (C) 2009 by Harald Welte <laforge@gnumonks.org> |
| 4 | * |
| 5 | * All Rights Reserved |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 8 | * it under the terms of the GNU Affero General Public License as published by |
| 9 | * the Free Software Foundation; either version 3 of the License, or |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 15 | * GNU Affero General Public License for more details. |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 16 | * |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 17 | * You should have received a copy of the GNU Affero General Public License |
| 18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 19 | * |
| 20 | */ |
| 21 | |
Harald Welte | eaa614c | 2010-05-02 11:26:34 +0200 | [diff] [blame] | 22 | #include <stdint.h> |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 23 | |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 24 | #include <osmocom/core/linuxlist.h> |
| 25 | #include <osmocom/core/talloc.h> |
| 26 | #include <osmocom/core/timer.h> |
| 27 | #include <osmocom/core/rate_ctr.h> |
Jacob Erlbeck | 46caed8 | 2015-11-02 15:15:38 +0100 | [diff] [blame] | 28 | #include <osmocom/core/stats.h> |
Harald Welte | fdf453c | 2012-07-14 12:15:19 +0200 | [diff] [blame] | 29 | #include <osmocom/core/backtrace.h> |
Pau Espin Pedrol | e659f75 | 2023-01-05 17:20:37 +0100 | [diff] [blame] | 30 | #include <osmocom/ctrl/control_if.h> |
| 31 | #include <osmocom/ctrl/ports.h> |
Alexander Couzens | f23e2db | 2020-07-27 22:39:58 +0200 | [diff] [blame] | 32 | #include <osmocom/gprs/gprs_ns2.h> |
Harald Welte | ea34a4e | 2012-06-16 14:59:56 +0800 | [diff] [blame] | 33 | #include <osmocom/gprs/gprs_bssgp.h> |
Harald Welte | 53373bc | 2016-04-20 17:11:43 +0200 | [diff] [blame] | 34 | #include <osmocom/gsm/protocol/gsm_04_08_gprs.h> |
Harald Welte | 7e82b74 | 2017-08-12 13:43:54 +0200 | [diff] [blame] | 35 | #include <osmocom/gsm/apn.h> |
Neels Hofmeyr | ee6cfdc | 2017-07-13 02:03:50 +0200 | [diff] [blame] | 36 | #include <osmocom/gsm/gsm_utils.h> |
Pau Espin Pedrol | 73b2bf3 | 2018-10-30 18:00:57 +0100 | [diff] [blame] | 37 | #include <osmocom/gsm/gsup.h> |
Harald Welte | ea34a4e | 2012-06-16 14:59:56 +0800 | [diff] [blame] | 38 | |
Neels Hofmeyr | 396f2e6 | 2017-09-04 15:13:25 +0200 | [diff] [blame] | 39 | #include <osmocom/sgsn/gprs_subscriber.h> |
| 40 | #include <osmocom/sgsn/debug.h> |
| 41 | #include <osmocom/sgsn/gprs_sgsn.h> |
| 42 | #include <osmocom/sgsn/sgsn.h> |
| 43 | #include <osmocom/sgsn/gprs_gmm.h> |
Pau Espin Pedrol | 35f0e66 | 2019-09-02 18:27:27 +0200 | [diff] [blame] | 44 | #include <osmocom/sgsn/gprs_sm.h> |
Neels Hofmeyr | 396f2e6 | 2017-09-04 15:13:25 +0200 | [diff] [blame] | 45 | #include <osmocom/sgsn/gprs_utils.h> |
| 46 | #include <osmocom/sgsn/signal.h> |
Alexander Couzens | f7198d7 | 2018-05-22 18:29:14 +0200 | [diff] [blame] | 47 | #include <osmocom/sgsn/gprs_gmm_attach.h> |
Pau Espin Pedrol | 02514bc | 2019-08-30 16:14:22 +0200 | [diff] [blame] | 48 | #include <osmocom/sgsn/gprs_mm_state_gb_fsm.h> |
Pau Espin Pedrol | ccd1252 | 2019-08-30 17:06:36 +0200 | [diff] [blame] | 49 | #include <osmocom/sgsn/gprs_mm_state_iu_fsm.h> |
Pau Espin Pedrol | 31c4657 | 2019-09-02 16:45:27 +0200 | [diff] [blame] | 50 | #include <osmocom/sgsn/gprs_gmm_fsm.h> |
Neels Hofmeyr | 396f2e6 | 2017-09-04 15:13:25 +0200 | [diff] [blame] | 51 | #include <osmocom/sgsn/gprs_llc.h> |
Pau Espin Pedrol | 52c9b8e | 2023-01-05 18:56:13 +0100 | [diff] [blame] | 52 | #include <osmocom/sgsn/gprs_sndcp.h> |
Pau Espin Pedrol | 5f4736a | 2023-01-04 21:30:28 +0100 | [diff] [blame] | 53 | #include <osmocom/sgsn/gtp_ggsn.h> |
Pau Espin Pedrol | 8ec269a | 2023-01-05 19:19:32 +0100 | [diff] [blame] | 54 | #include <osmocom/sgsn/gtp.h> |
Harald Welte | ab1d562 | 2010-05-18 19:58:38 +0200 | [diff] [blame] | 55 | |
Neels Hofmeyr | f4daf16 | 2016-05-21 00:44:50 +0200 | [diff] [blame] | 56 | #include <pdp.h> |
| 57 | |
Jacob Erlbeck | 81ffb74 | 2015-01-23 11:33:51 +0100 | [diff] [blame] | 58 | #include <time.h> |
| 59 | |
Neels Hofmeyr | a7a3947 | 2017-07-05 15:19:52 +0200 | [diff] [blame] | 60 | #include "../../bscconfig.h" |
| 61 | |
Jacob Erlbeck | 81ffb74 | 2015-01-23 11:33:51 +0100 | [diff] [blame] | 62 | #define GPRS_LLME_CHECK_TICK 30 |
| 63 | |
Harald Welte | ab1d562 | 2010-05-18 19:58:38 +0200 | [diff] [blame] | 64 | extern struct sgsn_instance *sgsn; |
Pau Espin Pedrol | b1d1c24 | 2018-10-30 17:27:59 +0100 | [diff] [blame] | 65 | extern void *tall_sgsn_ctx; |
Pau Espin Pedrol | e659f75 | 2023-01-05 17:20:37 +0100 | [diff] [blame] | 66 | extern struct osmo_tdef sgsn_T_defs[]; |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 67 | |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 68 | LLIST_HEAD(sgsn_mm_ctxts); |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 69 | LLIST_HEAD(sgsn_pdp_ctxts); |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 70 | |
Pau Espin Pedrol | fd815bb | 2019-08-30 18:32:42 +0200 | [diff] [blame] | 71 | const struct value_string sgsn_ran_type_names[] = { |
| 72 | { MM_CTX_T_GERAN_Gb, "GPRS/EDGE via Gb" }, |
| 73 | { MM_CTX_T_UTRAN_Iu, "UMTS via Iu" }, |
| 74 | #if 0 |
| 75 | { MM_CTX_T_GERAN_Iu, "GPRS/EDGE via Iu" }, |
| 76 | #endif |
| 77 | { 0, NULL } |
| 78 | }; |
| 79 | |
Harald Welte | 8acd88f | 2010-05-18 10:57:45 +0200 | [diff] [blame] | 80 | static const struct rate_ctr_desc mmctx_ctr_description[] = { |
Pau Espin Pedrol | dc730a3 | 2017-11-28 19:40:34 +0100 | [diff] [blame] | 81 | { "sign:packets:in", "Signalling Messages ( In)" }, |
| 82 | { "sign:packets:out", "Signalling Messages (Out)" }, |
| 83 | { "udata:packets:in", "User Data Messages ( In)" }, |
| 84 | { "udata:packets:out", "User Data Messages (Out)" }, |
| 85 | { "udata:bytes:in", "User Data Bytes ( In)" }, |
| 86 | { "udata:bytes:out", "User Data Bytes (Out)" }, |
Harald Welte | 8acd88f | 2010-05-18 10:57:45 +0200 | [diff] [blame] | 87 | { "pdp_ctx_act", "PDP Context Activations " }, |
| 88 | { "suspend", "SUSPEND Count " }, |
Pau Espin Pedrol | dc730a3 | 2017-11-28 19:40:34 +0100 | [diff] [blame] | 89 | { "paging:ps", "Paging Packet Switched " }, |
| 90 | { "paging:cs", "Paging Circuit Switched " }, |
Harald Welte | 8acd88f | 2010-05-18 10:57:45 +0200 | [diff] [blame] | 91 | { "ra_update", "Routing Area Update " }, |
| 92 | }; |
| 93 | |
| 94 | static const struct rate_ctr_group_desc mmctx_ctrg_desc = { |
Pau Espin Pedrol | dc730a3 | 2017-11-28 19:40:34 +0100 | [diff] [blame] | 95 | .group_name_prefix = "sgsn:mmctx", |
Harald Welte | 8acd88f | 2010-05-18 10:57:45 +0200 | [diff] [blame] | 96 | .group_description = "SGSN MM Context Statistics", |
| 97 | .num_ctr = ARRAY_SIZE(mmctx_ctr_description), |
| 98 | .ctr_desc = mmctx_ctr_description, |
Jacob Erlbeck | 46caed8 | 2015-11-02 15:15:38 +0100 | [diff] [blame] | 99 | .class_id = OSMO_STATS_CLASS_SUBSCRIBER, |
Harald Welte | 8acd88f | 2010-05-18 10:57:45 +0200 | [diff] [blame] | 100 | }; |
| 101 | |
Harald Welte | efbdee9 | 2010-06-10 00:20:12 +0200 | [diff] [blame] | 102 | static const struct rate_ctr_desc pdpctx_ctr_description[] = { |
Pau Espin Pedrol | dc730a3 | 2017-11-28 19:40:34 +0100 | [diff] [blame] | 103 | { "udata:packets:in", "User Data Messages ( In)" }, |
| 104 | { "udata:packets:out", "User Data Messages (Out)" }, |
| 105 | { "udata:bytes:in", "User Data Bytes ( In)" }, |
| 106 | { "udata:bytes:out", "User Data Bytes (Out)" }, |
Harald Welte | efbdee9 | 2010-06-10 00:20:12 +0200 | [diff] [blame] | 107 | }; |
| 108 | |
| 109 | static const struct rate_ctr_group_desc pdpctx_ctrg_desc = { |
Pau Espin Pedrol | dc730a3 | 2017-11-28 19:40:34 +0100 | [diff] [blame] | 110 | .group_name_prefix = "sgsn:pdpctx", |
Harald Welte | efbdee9 | 2010-06-10 00:20:12 +0200 | [diff] [blame] | 111 | .group_description = "SGSN PDP Context Statistics", |
| 112 | .num_ctr = ARRAY_SIZE(pdpctx_ctr_description), |
| 113 | .ctr_desc = pdpctx_ctr_description, |
Jacob Erlbeck | 46caed8 | 2015-11-02 15:15:38 +0100 | [diff] [blame] | 114 | .class_id = OSMO_STATS_CLASS_SUBSCRIBER, |
Harald Welte | efbdee9 | 2010-06-10 00:20:12 +0200 | [diff] [blame] | 115 | }; |
| 116 | |
Alexander Couzens | 14314bd | 2016-07-05 09:52:52 +0200 | [diff] [blame] | 117 | static const struct rate_ctr_desc sgsn_ctr_description[] = { |
Harald Welte | b68413b | 2017-11-21 08:51:47 +0100 | [diff] [blame] | 118 | { "llc:dl_bytes", "Count sent LLC bytes before giving it to the bssgp layer" }, |
Ruben Undheim | 55fcf11 | 2018-09-25 22:59:34 +0200 | [diff] [blame] | 119 | { "llc:ul_bytes", "Count successful received LLC bytes (encrypt & fcs correct)" }, |
| 120 | { "llc:dl_packets", "Count successful sent LLC packets before giving it to the bssgp layer" }, |
| 121 | { "llc:ul_packets", "Count successful received LLC packets (encrypt & fcs correct)" }, |
Harald Welte | b68413b | 2017-11-21 08:51:47 +0100 | [diff] [blame] | 122 | { "gprs:attach_requested", "Received attach requests" }, |
| 123 | { "gprs:attach_accepted", "Sent attach accepts" }, |
| 124 | { "gprs:attach_rejected", "Sent attach rejects" }, |
| 125 | { "gprs:detach_requested", "Received detach requests" }, |
| 126 | { "gprs:detach_acked", "Sent detach acks" }, |
| 127 | { "gprs:routing_area_requested", "Received routing area requests" }, |
| 128 | { "gprs:routing_area_requested", "Sent routing area acks" }, |
| 129 | { "gprs:routing_area_requested", "Sent routing area rejects" }, |
| 130 | { "pdp:activate_requested", "Received activate requests" }, |
| 131 | { "pdp:activate_rejected", "Sent activate rejects" }, |
| 132 | { "pdp:activate_accepted", "Sent activate accepts" }, |
| 133 | { "pdp:request_activated", "unused" }, |
| 134 | { "pdp:request_activate_rejected", "unused" }, |
| 135 | { "pdp:modify_requested", "unused" }, |
| 136 | { "pdp:modify_accepted", "unused" }, |
| 137 | { "pdp:dl_deactivate_requested", "Sent deactivate requests" }, |
| 138 | { "pdp:dl_deactivate_accepted", "Sent deactivate accepted" }, |
| 139 | { "pdp:ul_deactivate_requested", "Received deactivate requests" }, |
| 140 | { "pdp:ul_deactivate_accepted", "Received deactivate accepts" }, |
Alexander Couzens | 14314bd | 2016-07-05 09:52:52 +0200 | [diff] [blame] | 141 | }; |
| 142 | |
| 143 | static const struct rate_ctr_group_desc sgsn_ctrg_desc = { |
| 144 | "sgsn", |
| 145 | "SGSN Overall Statistics", |
| 146 | OSMO_STATS_CLASS_GLOBAL, |
| 147 | ARRAY_SIZE(sgsn_ctr_description), |
| 148 | sgsn_ctr_description, |
| 149 | }; |
| 150 | |
Daniel Willmann | 6292c8d | 2016-05-21 17:35:57 +0200 | [diff] [blame] | 151 | /* look-up an SGSN MM context based on Iu UE context (struct ue_conn_ctx)*/ |
| 152 | struct sgsn_mm_ctx *sgsn_mm_ctx_by_ue_ctx(const void *uectx) |
| 153 | { |
| 154 | struct sgsn_mm_ctx *ctx; |
| 155 | |
| 156 | llist_for_each_entry(ctx, &sgsn_mm_ctxts, list) { |
| 157 | if (ctx->ran_type == MM_CTX_T_UTRAN_Iu |
| 158 | && uectx == ctx->iu.ue_ctx) |
| 159 | return ctx; |
| 160 | } |
| 161 | |
| 162 | return NULL; |
| 163 | } |
| 164 | |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 165 | /* look-up a SGSN MM context based on TLLI + RAI */ |
Harald Welte | eaa614c | 2010-05-02 11:26:34 +0200 | [diff] [blame] | 166 | struct sgsn_mm_ctx *sgsn_mm_ctx_by_tlli(uint32_t tlli, |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 167 | const struct gprs_ra_id *raid) |
| 168 | { |
| 169 | struct sgsn_mm_ctx *ctx; |
| 170 | |
| 171 | llist_for_each_entry(ctx, &sgsn_mm_ctxts, list) { |
Harald Welte | f97ee04 | 2015-12-25 19:12:21 +0100 | [diff] [blame] | 172 | if ((tlli == ctx->gb.tlli || tlli == ctx->gb.tlli_new) && |
Jacob Erlbeck | e7bcdc3 | 2016-01-04 18:43:34 +0100 | [diff] [blame] | 173 | gprs_ra_id_equals(raid, &ctx->ra)) |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 174 | return ctx; |
| 175 | } |
Harald Welte | ab1d562 | 2010-05-18 19:58:38 +0200 | [diff] [blame] | 176 | |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 177 | return NULL; |
| 178 | } |
| 179 | |
Jacob Erlbeck | 5ac4aad | 2016-01-04 18:43:38 +0100 | [diff] [blame] | 180 | struct sgsn_mm_ctx *sgsn_mm_ctx_by_tlli_and_ptmsi(uint32_t tlli, |
| 181 | const struct gprs_ra_id *raid) |
| 182 | { |
| 183 | struct sgsn_mm_ctx *ctx; |
| 184 | int tlli_type; |
| 185 | |
| 186 | /* TODO: Also check the P_TMSI signature to be safe. That signature |
| 187 | * should be different (at least with a sufficiently high probability) |
| 188 | * after SGSN restarts and for multiple SGSN instances. |
| 189 | */ |
| 190 | |
| 191 | tlli_type = gprs_tlli_type(tlli); |
| 192 | if (tlli_type != TLLI_FOREIGN && tlli_type != TLLI_LOCAL) |
| 193 | return NULL; |
| 194 | |
| 195 | llist_for_each_entry(ctx, &sgsn_mm_ctxts, list) { |
| 196 | if ((gprs_tmsi2tlli(ctx->p_tmsi, tlli_type) == tlli || |
| 197 | gprs_tmsi2tlli(ctx->p_tmsi_old, tlli_type) == tlli) && |
| 198 | gprs_ra_id_equals(raid, &ctx->ra)) |
| 199 | return ctx; |
| 200 | } |
| 201 | |
| 202 | return NULL; |
| 203 | } |
| 204 | |
Harald Welte | eaa614c | 2010-05-02 11:26:34 +0200 | [diff] [blame] | 205 | struct sgsn_mm_ctx *sgsn_mm_ctx_by_ptmsi(uint32_t p_tmsi) |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 206 | { |
| 207 | struct sgsn_mm_ctx *ctx; |
| 208 | |
| 209 | llist_for_each_entry(ctx, &sgsn_mm_ctxts, list) { |
Harald Welte | c2e8cc4 | 2010-05-31 20:23:38 +0200 | [diff] [blame] | 210 | if (p_tmsi == ctx->p_tmsi || |
| 211 | (ctx->p_tmsi_old && ctx->p_tmsi_old == p_tmsi)) |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 212 | return ctx; |
| 213 | } |
| 214 | return NULL; |
| 215 | } |
| 216 | |
| 217 | struct sgsn_mm_ctx *sgsn_mm_ctx_by_imsi(const char *imsi) |
| 218 | { |
| 219 | struct sgsn_mm_ctx *ctx; |
| 220 | |
| 221 | llist_for_each_entry(ctx, &sgsn_mm_ctxts, list) { |
| 222 | if (!strcmp(imsi, ctx->imsi)) |
| 223 | return ctx; |
| 224 | } |
| 225 | return NULL; |
| 226 | |
| 227 | } |
| 228 | |
Pau Espin Pedrol | 87264e6 | 2019-08-29 20:52:28 +0200 | [diff] [blame] | 229 | /* Allocate a new SGSN MM context, generic part */ |
| 230 | struct sgsn_mm_ctx *sgsn_mm_ctx_alloc(uint32_t rate_ctr_id) |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 231 | { |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 232 | struct sgsn_mm_ctx *ctx; |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 233 | |
Pau Espin Pedrol | b1d1c24 | 2018-10-30 17:27:59 +0100 | [diff] [blame] | 234 | ctx = talloc_zero(tall_sgsn_ctx, struct sgsn_mm_ctx); |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 235 | if (!ctx) |
| 236 | return NULL; |
| 237 | |
Jacob Erlbeck | bd0cf11 | 2014-12-01 12:33:33 +0100 | [diff] [blame] | 238 | ctx->auth_triplet.key_seq = GSM_KEY_SEQ_INVAL; |
Pau Espin Pedrol | 87264e6 | 2019-08-29 20:52:28 +0200 | [diff] [blame] | 239 | ctx->ctrg = rate_ctr_group_alloc(ctx, &mmctx_ctrg_desc, rate_ctr_id); |
Harald Welte | 26c1465 | 2017-07-12 00:25:51 +0200 | [diff] [blame] | 240 | if (!ctx->ctrg) { |
| 241 | LOGMMCTXP(LOGL_ERROR, ctx, "Cannot allocate counter group\n"); |
| 242 | talloc_free(ctx); |
| 243 | return NULL; |
| 244 | } |
Alexander Couzens | 865bf6f | 2019-10-08 17:01:05 +0200 | [diff] [blame] | 245 | |
Pau Espin Pedrol | 31c4657 | 2019-09-02 16:45:27 +0200 | [diff] [blame] | 246 | ctx->gmm_fsm = osmo_fsm_inst_alloc(&gmm_fsm, ctx, ctx, LOGL_DEBUG, "gmm_fsm"); |
Alexander Couzens | 865bf6f | 2019-10-08 17:01:05 +0200 | [diff] [blame] | 247 | if (!ctx->gmm_fsm) |
| 248 | goto out; |
Alexander Couzens | f7198d7 | 2018-05-22 18:29:14 +0200 | [diff] [blame] | 249 | ctx->gmm_att_req.fsm = osmo_fsm_inst_alloc(&gmm_attach_req_fsm, ctx, ctx, LOGL_DEBUG, "gb_gmm_req"); |
Alexander Couzens | 865bf6f | 2019-10-08 17:01:05 +0200 | [diff] [blame] | 250 | if (!ctx->gmm_att_req.fsm) |
| 251 | goto out; |
Alexander Couzens | d597ee2 | 2019-09-17 17:42:11 +0200 | [diff] [blame] | 252 | ctx->gb.mm_state_fsm = osmo_fsm_inst_alloc(&mm_state_gb_fsm, ctx, ctx, LOGL_DEBUG, NULL); |
Alexander Couzens | 865bf6f | 2019-10-08 17:01:05 +0200 | [diff] [blame] | 253 | if (!ctx->gb.mm_state_fsm) |
| 254 | goto out; |
Alexander Couzens | d597ee2 | 2019-09-17 17:42:11 +0200 | [diff] [blame] | 255 | #ifdef BUILD_IU |
| 256 | ctx->iu.mm_state_fsm = osmo_fsm_inst_alloc(&mm_state_iu_fsm, ctx, ctx, LOGL_DEBUG, NULL); |
Alexander Couzens | 865bf6f | 2019-10-08 17:01:05 +0200 | [diff] [blame] | 257 | if (!ctx->iu.mm_state_fsm) |
| 258 | goto out; |
Alexander Couzens | d597ee2 | 2019-09-17 17:42:11 +0200 | [diff] [blame] | 259 | #endif |
Alexander Couzens | 865bf6f | 2019-10-08 17:01:05 +0200 | [diff] [blame] | 260 | |
Harald Welte | 6ffbaab | 2010-05-18 12:44:45 +0200 | [diff] [blame] | 261 | INIT_LLIST_HEAD(&ctx->pdp_list); |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 262 | |
| 263 | llist_add(&ctx->list, &sgsn_mm_ctxts); |
| 264 | |
| 265 | return ctx; |
Alexander Couzens | 865bf6f | 2019-10-08 17:01:05 +0200 | [diff] [blame] | 266 | |
| 267 | out: |
| 268 | if (ctx->iu.mm_state_fsm) |
| 269 | osmo_fsm_inst_free(ctx->iu.mm_state_fsm); |
| 270 | if (ctx->gb.mm_state_fsm) |
| 271 | osmo_fsm_inst_free(ctx->gb.mm_state_fsm); |
| 272 | if (ctx->gmm_att_req.fsm) |
| 273 | osmo_fsm_inst_free(ctx->gmm_att_req.fsm); |
| 274 | if (ctx->gmm_fsm) |
| 275 | osmo_fsm_inst_free(ctx->gmm_fsm); |
| 276 | |
| 277 | rate_ctr_group_free(ctx->ctrg); |
| 278 | talloc_free(ctx); |
| 279 | |
| 280 | return NULL; |
Harald Welte | 9b455bf | 2010-03-14 15:45:01 +0800 | [diff] [blame] | 281 | } |
Pau Espin Pedrol | 87264e6 | 2019-08-29 20:52:28 +0200 | [diff] [blame] | 282 | /* Allocate a new SGSN MM context for GERAN_Gb */ |
| 283 | struct sgsn_mm_ctx *sgsn_mm_ctx_alloc_gb(uint32_t tlli, |
| 284 | const struct gprs_ra_id *raid) |
| 285 | { |
| 286 | struct sgsn_mm_ctx *ctx; |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 287 | |
Pau Espin Pedrol | 87264e6 | 2019-08-29 20:52:28 +0200 | [diff] [blame] | 288 | ctx = sgsn_mm_ctx_alloc(tlli); |
| 289 | if (!ctx) |
| 290 | return NULL; |
| 291 | |
| 292 | memcpy(&ctx->ra, raid, sizeof(ctx->ra)); |
| 293 | ctx->ran_type = MM_CTX_T_GERAN_Gb; |
| 294 | ctx->gb.tlli = tlli; |
Alexander Couzens | d597ee2 | 2019-09-17 17:42:11 +0200 | [diff] [blame] | 295 | osmo_fsm_inst_update_id_f(ctx->gb.mm_state_fsm, "%" PRIu32, tlli); |
Pau Espin Pedrol | 87264e6 | 2019-08-29 20:52:28 +0200 | [diff] [blame] | 296 | |
Pau Espin Pedrol | 87264e6 | 2019-08-29 20:52:28 +0200 | [diff] [blame] | 297 | return ctx; |
| 298 | } |
| 299 | |
| 300 | /* Allocate a new SGSN MM context for UTRAN_Iu */ |
Daniel Willmann | 6292c8d | 2016-05-21 17:35:57 +0200 | [diff] [blame] | 301 | struct sgsn_mm_ctx *sgsn_mm_ctx_alloc_iu(void *uectx) |
| 302 | { |
Neels Hofmeyr | a7a3947 | 2017-07-05 15:19:52 +0200 | [diff] [blame] | 303 | #if BUILD_IU |
Daniel Willmann | 6292c8d | 2016-05-21 17:35:57 +0200 | [diff] [blame] | 304 | struct sgsn_mm_ctx *ctx; |
Max | 794693c | 2017-12-20 11:38:01 +0100 | [diff] [blame] | 305 | struct ranap_ue_conn_ctx *ue_ctx = uectx; |
Daniel Willmann | 6292c8d | 2016-05-21 17:35:57 +0200 | [diff] [blame] | 306 | |
Pau Espin Pedrol | 87264e6 | 2019-08-29 20:52:28 +0200 | [diff] [blame] | 307 | ctx = sgsn_mm_ctx_alloc(ue_ctx->conn_id); |
Daniel Willmann | 6292c8d | 2016-05-21 17:35:57 +0200 | [diff] [blame] | 308 | if (!ctx) |
| 309 | return NULL; |
| 310 | |
Pau Espin Pedrol | 87264e6 | 2019-08-29 20:52:28 +0200 | [diff] [blame] | 311 | /* Need to get RAID from IU conn */ |
| 312 | ctx->ra = ue_ctx->ra_id; |
Daniel Willmann | 6292c8d | 2016-05-21 17:35:57 +0200 | [diff] [blame] | 313 | ctx->ran_type = MM_CTX_T_UTRAN_Iu; |
Max | 794693c | 2017-12-20 11:38:01 +0100 | [diff] [blame] | 314 | ctx->iu.ue_ctx = ue_ctx; |
Neels Hofmeyr | 2188a77 | 2016-05-20 21:59:55 +0200 | [diff] [blame] | 315 | ctx->iu.ue_ctx->rab_assign_addr_enc = sgsn->cfg.iu.rab_assign_addr_enc; |
Daniel Willmann | 3ecfbbb | 2016-05-21 00:16:55 +0200 | [diff] [blame] | 316 | ctx->iu.new_key = 1; |
Alexander Couzens | d597ee2 | 2019-09-17 17:42:11 +0200 | [diff] [blame] | 317 | osmo_fsm_inst_update_id_f(ctx->iu.mm_state_fsm, "%" PRIu32, ue_ctx->conn_id); |
Pau Espin Pedrol | ccd1252 | 2019-08-30 17:06:36 +0200 | [diff] [blame] | 318 | |
Daniel Willmann | 6292c8d | 2016-05-21 17:35:57 +0200 | [diff] [blame] | 319 | |
| 320 | return ctx; |
Neels Hofmeyr | a7a3947 | 2017-07-05 15:19:52 +0200 | [diff] [blame] | 321 | #else |
| 322 | return NULL; |
| 323 | #endif |
Daniel Willmann | 6292c8d | 2016-05-21 17:35:57 +0200 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | |
Harald Welte | 7b022ee | 2012-07-14 12:04:04 +0200 | [diff] [blame] | 327 | /* this is a hard _free_ function, it doesn't clean up the PDP contexts |
| 328 | * in libgtp! */ |
Holger Hans Peter Freyther | b448dd8 | 2015-05-03 11:46:58 +0200 | [diff] [blame] | 329 | static void sgsn_mm_ctx_free(struct sgsn_mm_ctx *mm) |
Harald Welte | c728eea | 2010-12-24 23:07:18 +0100 | [diff] [blame] | 330 | { |
| 331 | struct sgsn_pdp_ctx *pdp, *pdp2; |
| 332 | |
Jacob Erlbeck | e671d25 | 2015-01-26 14:43:07 +0100 | [diff] [blame] | 333 | /* Unlink from global list of MM contexts */ |
| 334 | llist_del(&mm->list); |
| 335 | |
| 336 | /* Free all PDP contexts */ |
| 337 | llist_for_each_entry_safe(pdp, pdp2, &mm->pdp_list, list) |
| 338 | sgsn_pdp_ctx_free(pdp); |
| 339 | |
| 340 | rate_ctr_group_free(mm->ctrg); |
| 341 | |
| 342 | talloc_free(mm); |
| 343 | } |
| 344 | |
| 345 | void sgsn_mm_ctx_cleanup_free(struct sgsn_mm_ctx *mm) |
| 346 | { |
Daniel Willmann | 7ec8ca4 | 2016-05-21 00:48:49 +0200 | [diff] [blame] | 347 | struct gprs_llc_llme *llme = NULL; |
Jacob Erlbeck | e671d25 | 2015-01-26 14:43:07 +0100 | [diff] [blame] | 348 | struct sgsn_pdp_ctx *pdp, *pdp2; |
Holger Hans Peter Freyther | b100895 | 2015-05-02 19:55:38 +0200 | [diff] [blame] | 349 | struct sgsn_signal_data sig_data; |
Jacob Erlbeck | e671d25 | 2015-01-26 14:43:07 +0100 | [diff] [blame] | 350 | |
Daniel Willmann | 7ec8ca4 | 2016-05-21 00:48:49 +0200 | [diff] [blame] | 351 | if (mm->ran_type == MM_CTX_T_GERAN_Gb) |
| 352 | llme = mm->gb.llme; |
| 353 | else |
| 354 | OSMO_ASSERT(mm->gb.llme == NULL); |
| 355 | |
Holger Hans Peter Freyther | 39c430e | 2015-05-25 12:26:49 +0800 | [diff] [blame] | 356 | /* Forget about ongoing look-ups */ |
| 357 | if (mm->ggsn_lookup) { |
| 358 | LOGMMCTXP(LOGL_NOTICE, mm, |
| 359 | "Cleaning mmctx with on-going query.\n"); |
| 360 | mm->ggsn_lookup->mmctx = NULL; |
| 361 | mm->ggsn_lookup = NULL; |
| 362 | } |
| 363 | |
Jacob Erlbeck | e671d25 | 2015-01-26 14:43:07 +0100 | [diff] [blame] | 364 | /* delete all existing PDP contexts for this MS */ |
| 365 | llist_for_each_entry_safe(pdp, pdp2, &mm->pdp_list, list) { |
| 366 | LOGMMCTXP(LOGL_NOTICE, mm, |
| 367 | "Dropping PDP context for NSAPI=%u\n", pdp->nsapi); |
| 368 | sgsn_pdp_ctx_terminate(pdp); |
| 369 | } |
| 370 | |
Jacob Erlbeck | ae20b4b | 2014-10-20 16:05:55 +0200 | [diff] [blame] | 371 | if (osmo_timer_pending(&mm->timer)) { |
| 372 | LOGMMCTXP(LOGL_INFO, mm, "Cancelling MM timer %u\n", mm->T); |
| 373 | osmo_timer_del(&mm->timer); |
| 374 | } |
| 375 | |
Holger Hans Peter Freyther | b100895 | 2015-05-02 19:55:38 +0200 | [diff] [blame] | 376 | memset(&sig_data, 0, sizeof(sig_data)); |
| 377 | sig_data.mm = mm; |
| 378 | osmo_signal_dispatch(SS_SGSN, S_SGSN_MM_FREE, &sig_data); |
| 379 | |
| 380 | |
Jacob Erlbeck | be2c8d9 | 2014-11-12 10:18:09 +0100 | [diff] [blame] | 381 | /* Detach from subscriber which is possibly freed then */ |
| 382 | if (mm->subscr) { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 383 | struct gprs_subscr *subscr = gprs_subscr_get(mm->subscr); |
Jacob Erlbeck | 3e4e58f | 2015-01-26 11:07:24 +0100 | [diff] [blame] | 384 | gprs_subscr_cleanup(subscr); |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 385 | gprs_subscr_put(subscr); |
Jacob Erlbeck | be2c8d9 | 2014-11-12 10:18:09 +0100 | [diff] [blame] | 386 | } |
| 387 | |
Alexander Couzens | f7198d7 | 2018-05-22 18:29:14 +0200 | [diff] [blame] | 388 | if (mm->gmm_att_req.fsm) |
| 389 | gmm_att_req_free(mm); |
Pau Espin Pedrol | 02514bc | 2019-08-30 16:14:22 +0200 | [diff] [blame] | 390 | if (mm->gb.mm_state_fsm) |
| 391 | osmo_fsm_inst_free(mm->gb.mm_state_fsm); |
Pau Espin Pedrol | ccd1252 | 2019-08-30 17:06:36 +0200 | [diff] [blame] | 392 | if (mm->iu.mm_state_fsm) |
| 393 | osmo_fsm_inst_free(mm->iu.mm_state_fsm); |
Pau Espin Pedrol | 31c4657 | 2019-09-02 16:45:27 +0200 | [diff] [blame] | 394 | if (mm->gmm_fsm) |
| 395 | osmo_fsm_inst_free(mm->gmm_fsm); |
Alexander Couzens | f7198d7 | 2018-05-22 18:29:14 +0200 | [diff] [blame] | 396 | |
Jacob Erlbeck | e671d25 | 2015-01-26 14:43:07 +0100 | [diff] [blame] | 397 | sgsn_mm_ctx_free(mm); |
| 398 | mm = NULL; |
Harald Welte | c728eea | 2010-12-24 23:07:18 +0100 | [diff] [blame] | 399 | |
Daniel Willmann | 7ec8ca4 | 2016-05-21 00:48:49 +0200 | [diff] [blame] | 400 | if (llme) { |
| 401 | /* TLLI unassignment, must be called after sgsn_mm_ctx_free */ |
Pau Espin Pedrol | 788863c | 2019-08-12 18:31:22 +0200 | [diff] [blame] | 402 | if (gprs_llgmm_unassign(llme) < 0) |
| 403 | LOGMMCTXP(LOGL_ERROR, mm, "gprs_llgmm_unassign failed, llme not freed!\n"); |
Daniel Willmann | 7ec8ca4 | 2016-05-21 00:48:49 +0200 | [diff] [blame] | 404 | } |
Harald Welte | c728eea | 2010-12-24 23:07:18 +0100 | [diff] [blame] | 405 | } |
Harald Welte | 77289c2 | 2010-05-18 14:32:29 +0200 | [diff] [blame] | 406 | |
Jacob Erlbeck | e671d25 | 2015-01-26 14:43:07 +0100 | [diff] [blame] | 407 | |
Harald Welte | 96df606 | 2010-06-03 06:37:26 +0200 | [diff] [blame] | 408 | /* look up PDP context by MM context and NSAPI */ |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 409 | struct sgsn_pdp_ctx *sgsn_pdp_ctx_by_nsapi(const struct sgsn_mm_ctx *mm, |
| 410 | uint8_t nsapi) |
| 411 | { |
| 412 | struct sgsn_pdp_ctx *pdp; |
| 413 | |
| 414 | llist_for_each_entry(pdp, &mm->pdp_list, list) { |
| 415 | if (pdp->nsapi == nsapi) |
| 416 | return pdp; |
| 417 | } |
| 418 | return NULL; |
| 419 | } |
| 420 | |
Harald Welte | 96df606 | 2010-06-03 06:37:26 +0200 | [diff] [blame] | 421 | /* look up PDP context by MM context and transaction ID */ |
Harald Welte | 77289c2 | 2010-05-18 14:32:29 +0200 | [diff] [blame] | 422 | struct sgsn_pdp_ctx *sgsn_pdp_ctx_by_tid(const struct sgsn_mm_ctx *mm, |
| 423 | uint8_t tid) |
| 424 | { |
| 425 | struct sgsn_pdp_ctx *pdp; |
| 426 | |
| 427 | llist_for_each_entry(pdp, &mm->pdp_list, list) { |
| 428 | if (pdp->ti == tid) |
| 429 | return pdp; |
| 430 | } |
| 431 | return NULL; |
| 432 | } |
| 433 | |
Harald Welte | 7b022ee | 2012-07-14 12:04:04 +0200 | [diff] [blame] | 434 | /* you don't want to use this directly, call sgsn_create_pdp_ctx() */ |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 435 | struct sgsn_pdp_ctx *sgsn_pdp_ctx_alloc(struct sgsn_mm_ctx *mm, |
Pau Espin Pedrol | a98fead | 2018-07-09 14:39:47 +0200 | [diff] [blame] | 436 | struct sgsn_ggsn_ctx *ggsn, |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 437 | uint8_t nsapi) |
| 438 | { |
| 439 | struct sgsn_pdp_ctx *pdp; |
| 440 | |
| 441 | pdp = sgsn_pdp_ctx_by_nsapi(mm, nsapi); |
| 442 | if (pdp) |
| 443 | return NULL; |
| 444 | |
Pau Espin Pedrol | b1d1c24 | 2018-10-30 17:27:59 +0100 | [diff] [blame] | 445 | pdp = talloc_zero(tall_sgsn_ctx, struct sgsn_pdp_ctx); |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 446 | if (!pdp) |
| 447 | return NULL; |
| 448 | |
| 449 | pdp->mm = mm; |
Pau Espin Pedrol | a98fead | 2018-07-09 14:39:47 +0200 | [diff] [blame] | 450 | pdp->ggsn = ggsn; |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 451 | pdp->nsapi = nsapi; |
Harald Welte | efbdee9 | 2010-06-10 00:20:12 +0200 | [diff] [blame] | 452 | pdp->ctrg = rate_ctr_group_alloc(pdp, &pdpctx_ctrg_desc, nsapi); |
Harald Welte | 26c1465 | 2017-07-12 00:25:51 +0200 | [diff] [blame] | 453 | if (!pdp->ctrg) { |
| 454 | LOGPDPCTXP(LOGL_ERROR, pdp, "Error allocation counter group\n"); |
| 455 | talloc_free(pdp); |
| 456 | return NULL; |
| 457 | } |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 458 | llist_add(&pdp->list, &mm->pdp_list); |
Pau Espin Pedrol | fa12010 | 2018-07-09 20:37:47 +0200 | [diff] [blame] | 459 | sgsn_ggsn_ctx_add_pdp(pdp->ggsn, pdp); |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 460 | llist_add(&pdp->g_list, &sgsn_pdp_ctxts); |
| 461 | |
| 462 | return pdp; |
| 463 | } |
| 464 | |
Jacob Erlbeck | 99985b5 | 2014-10-13 10:32:00 +0200 | [diff] [blame] | 465 | /* |
| 466 | * This function will not trigger any GSM DEACT PDP ACK messages, so you |
| 467 | * probably want to call sgsn_delete_pdp_ctx() instead if the connection |
| 468 | * isn't detached already. |
| 469 | */ |
| 470 | void sgsn_pdp_ctx_terminate(struct sgsn_pdp_ctx *pdp) |
| 471 | { |
Holger Hans Peter Freyther | b100895 | 2015-05-02 19:55:38 +0200 | [diff] [blame] | 472 | struct sgsn_signal_data sig_data; |
| 473 | |
Jacob Erlbeck | 99985b5 | 2014-10-13 10:32:00 +0200 | [diff] [blame] | 474 | OSMO_ASSERT(pdp->mm != NULL); |
| 475 | |
| 476 | /* There might still be pending callbacks in libgtp. So the parts of |
| 477 | * this object relevant to GTP need to remain intact in this case. */ |
| 478 | |
| 479 | LOGPDPCTXP(LOGL_INFO, pdp, "Forcing release of PDP context\n"); |
| 480 | |
Daniel Willmann | f9f4387 | 2016-05-20 22:36:23 +0200 | [diff] [blame] | 481 | if (pdp->mm->ran_type == MM_CTX_T_GERAN_Gb) { |
| 482 | /* Force the deactivation of the SNDCP layer */ |
Alexander Couzens | 8e3766c | 2019-09-10 16:01:46 +0200 | [diff] [blame] | 483 | if (pdp->mm->gb.llme) |
| 484 | sndcp_sm_deactivate_ind(&pdp->mm->gb.llme->lle[pdp->sapi], pdp->nsapi); |
Daniel Willmann | f9f4387 | 2016-05-20 22:36:23 +0200 | [diff] [blame] | 485 | } |
Jacob Erlbeck | 99985b5 | 2014-10-13 10:32:00 +0200 | [diff] [blame] | 486 | |
Holger Hans Peter Freyther | b100895 | 2015-05-02 19:55:38 +0200 | [diff] [blame] | 487 | memset(&sig_data, 0, sizeof(sig_data)); |
| 488 | sig_data.pdp = pdp; |
| 489 | osmo_signal_dispatch(SS_SGSN, S_SGSN_PDP_TERMINATE, &sig_data); |
| 490 | |
Jacob Erlbeck | 99985b5 | 2014-10-13 10:32:00 +0200 | [diff] [blame] | 491 | /* Detach from MM context */ |
Pau Espin Pedrol | 8c7d259 | 2018-07-09 20:44:17 +0200 | [diff] [blame] | 492 | pdp_ctx_detach_mm_ctx(pdp); |
Pau Espin Pedrol | a733a50 | 2018-07-13 16:37:22 +0200 | [diff] [blame] | 493 | if (pdp->ggsn) |
| 494 | sgsn_delete_pdp_ctx(pdp); |
Jacob Erlbeck | 99985b5 | 2014-10-13 10:32:00 +0200 | [diff] [blame] | 495 | } |
| 496 | |
| 497 | /* |
| 498 | * Don't call this function directly unless you know what you are doing. |
| 499 | * In normal conditions use sgsn_delete_pdp_ctx and in unspecified or |
| 500 | * implementation dependent abnormal ones sgsn_pdp_ctx_terminate. |
| 501 | */ |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 502 | void sgsn_pdp_ctx_free(struct sgsn_pdp_ctx *pdp) |
| 503 | { |
Holger Hans Peter Freyther | b100895 | 2015-05-02 19:55:38 +0200 | [diff] [blame] | 504 | struct sgsn_signal_data sig_data; |
| 505 | |
| 506 | memset(&sig_data, 0, sizeof(sig_data)); |
| 507 | sig_data.pdp = pdp; |
| 508 | osmo_signal_dispatch(SS_SGSN, S_SGSN_PDP_FREE, &sig_data); |
| 509 | |
Pau Espin Pedrol | ff5b59a | 2020-10-19 16:36:50 +0200 | [diff] [blame] | 510 | if (osmo_timer_pending(&pdp->timer)) { |
| 511 | LOGPDPCTXP(LOGL_ERROR, pdp, "Freeing PDP ctx with timer %u pending\n", pdp->T); |
| 512 | osmo_timer_del(&pdp->timer); |
| 513 | } |
| 514 | |
Harald Welte | 376d5e5 | 2010-06-28 18:57:21 +0200 | [diff] [blame] | 515 | rate_ctr_group_free(pdp->ctrg); |
Jacob Erlbeck | 99985b5 | 2014-10-13 10:32:00 +0200 | [diff] [blame] | 516 | if (pdp->mm) |
| 517 | llist_del(&pdp->list); |
Pau Espin Pedrol | a98fead | 2018-07-09 14:39:47 +0200 | [diff] [blame] | 518 | if (pdp->ggsn) |
Pau Espin Pedrol | fa12010 | 2018-07-09 20:37:47 +0200 | [diff] [blame] | 519 | sgsn_ggsn_ctx_remove_pdp(pdp->ggsn, pdp); |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 520 | llist_del(&pdp->g_list); |
Harald Welte | fdf453c | 2012-07-14 12:15:19 +0200 | [diff] [blame] | 521 | |
| 522 | /* _if_ we still have a library handle, at least set it to NULL |
| 523 | * to avoid any dereferences of the now-deleted PDP context from |
| 524 | * sgsn_libgtp:cb_data_ind() */ |
| 525 | if (pdp->lib) { |
| 526 | struct pdp_t *lib = pdp->lib; |
Daniel Willmann | 4655314 | 2014-09-03 17:46:44 +0200 | [diff] [blame] | 527 | LOGPDPCTXP(LOGL_NOTICE, pdp, "freeing PDP context that still " |
Harald Welte | fdf453c | 2012-07-14 12:15:19 +0200 | [diff] [blame] | 528 | "has a libgtp handle attached to it, this shouldn't " |
| 529 | "happen!\n"); |
| 530 | osmo_generate_backtrace(); |
| 531 | lib->priv = NULL; |
| 532 | } |
| 533 | |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 534 | talloc_free(pdp); |
| 535 | } |
| 536 | |
Harald Welte | 6463c07 | 2010-05-18 17:04:55 +0200 | [diff] [blame] | 537 | uint32_t sgsn_alloc_ptmsi(void) |
| 538 | { |
| 539 | struct sgsn_mm_ctx *mm; |
Alexander Couzens | 8a215c3 | 2017-02-03 23:22:18 +0100 | [diff] [blame] | 540 | uint32_t ptmsi = 0xdeadbeef; |
Max | 3b6332f | 2017-11-01 13:28:38 +0100 | [diff] [blame] | 541 | int max_retries = 100, rc = 0; |
Harald Welte | 6463c07 | 2010-05-18 17:04:55 +0200 | [diff] [blame] | 542 | |
| 543 | restart: |
Max | 3b6332f | 2017-11-01 13:28:38 +0100 | [diff] [blame] | 544 | rc = osmo_get_rand_id((uint8_t *) &ptmsi, sizeof(ptmsi)); |
| 545 | if (rc < 0) |
Daniel Willmann | 044ce5f | 2015-10-12 19:36:33 +0200 | [diff] [blame] | 546 | goto failed; |
| 547 | |
Jacob Erlbeck | d8a6553 | 2015-01-15 18:51:31 +0100 | [diff] [blame] | 548 | /* Enforce that the 2 MSB are set without loosing the distance between |
| 549 | * identical values. Since rand() has no duplicate values within a |
| 550 | * period (because the size of the state is the same like the size of |
| 551 | * the random value), this leads to a distance of period/4 when the |
| 552 | * distribution of the 2 MSB is uniform. This approach fails with a |
| 553 | * probability of (3/4)^max_retries, only 1% of the approaches will |
| 554 | * need more than 16 numbers (even distribution assumed). |
| 555 | * |
| 556 | * Alternatively, a freeze list could be used if another PRNG is used |
| 557 | * or when this approach proves to be not sufficient. |
| 558 | */ |
Eric Wild | df9b391 | 2019-06-17 12:13:28 +0200 | [diff] [blame] | 559 | if (ptmsi >= GSM23003_TMSI_SGSN_MASK) { |
Jacob Erlbeck | d8a6553 | 2015-01-15 18:51:31 +0100 | [diff] [blame] | 560 | if (!max_retries--) |
| 561 | goto failed; |
| 562 | goto restart; |
| 563 | } |
Eric Wild | df9b391 | 2019-06-17 12:13:28 +0200 | [diff] [blame] | 564 | ptmsi |= GSM23003_TMSI_SGSN_MASK; |
Jacob Erlbeck | d8a6553 | 2015-01-15 18:51:31 +0100 | [diff] [blame] | 565 | |
| 566 | if (ptmsi == GSM_RESERVED_TMSI) { |
| 567 | if (!max_retries--) |
| 568 | goto failed; |
| 569 | goto restart; |
| 570 | } |
| 571 | |
Harald Welte | 6463c07 | 2010-05-18 17:04:55 +0200 | [diff] [blame] | 572 | llist_for_each_entry(mm, &sgsn_mm_ctxts, list) { |
Jacob Erlbeck | 08fbeb8 | 2014-09-19 09:28:42 +0200 | [diff] [blame] | 573 | if (mm->p_tmsi == ptmsi) { |
| 574 | if (!max_retries--) |
| 575 | goto failed; |
Harald Welte | 6463c07 | 2010-05-18 17:04:55 +0200 | [diff] [blame] | 576 | goto restart; |
Jacob Erlbeck | 08fbeb8 | 2014-09-19 09:28:42 +0200 | [diff] [blame] | 577 | } |
Harald Welte | 6463c07 | 2010-05-18 17:04:55 +0200 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | return ptmsi; |
Jacob Erlbeck | 08fbeb8 | 2014-09-19 09:28:42 +0200 | [diff] [blame] | 581 | |
| 582 | failed: |
Max | 3b6332f | 2017-11-01 13:28:38 +0100 | [diff] [blame] | 583 | LOGP(DGPRS, LOGL_ERROR, "Failed to allocate a P-TMSI: %d (%s)\n", rc, strerror(-rc)); |
Jacob Erlbeck | 08fbeb8 | 2014-09-19 09:28:42 +0200 | [diff] [blame] | 584 | return GSM_RESERVED_TMSI; |
Harald Welte | 6463c07 | 2010-05-18 17:04:55 +0200 | [diff] [blame] | 585 | } |
Harald Welte | a9b473a | 2010-12-24 21:13:26 +0100 | [diff] [blame] | 586 | |
Jacob Erlbeck | 555b2e5 | 2015-01-26 13:52:42 +0100 | [diff] [blame] | 587 | void sgsn_update_subscriber_data(struct sgsn_mm_ctx *mmctx) |
Jacob Erlbeck | 423f8bf | 2014-10-24 18:09:54 +0200 | [diff] [blame] | 588 | { |
Jacob Erlbeck | 555b2e5 | 2015-01-26 13:52:42 +0100 | [diff] [blame] | 589 | OSMO_ASSERT(mmctx != NULL); |
Jacob Erlbeck | c939196 | 2014-12-18 09:53:07 +0100 | [diff] [blame] | 590 | LOGMMCTXP(LOGL_INFO, mmctx, "Subscriber data update\n"); |
Jacob Erlbeck | be2c8d9 | 2014-11-12 10:18:09 +0100 | [diff] [blame] | 591 | |
Jacob Erlbeck | a0b6efb | 2014-11-13 10:48:39 +0100 | [diff] [blame] | 592 | sgsn_auth_update(mmctx); |
Jacob Erlbeck | 423f8bf | 2014-10-24 18:09:54 +0200 | [diff] [blame] | 593 | } |
Jacob Erlbeck | 81ffb74 | 2015-01-23 11:33:51 +0100 | [diff] [blame] | 594 | |
Holger Hans Peter Freyther | 5db6857 | 2017-07-09 13:18:17 +0200 | [diff] [blame] | 595 | static void insert_extra(struct tlv_parsed *tp, |
| 596 | struct sgsn_subscriber_data *data, |
| 597 | struct sgsn_subscriber_pdp_data *pdp) |
Holger Hans Peter Freyther | 8cedded | 2015-04-23 11:33:35 -0400 | [diff] [blame] | 598 | { |
| 599 | tp->lv[OSMO_IE_GSM_SUB_QOS].len = pdp->qos_subscribed_len; |
| 600 | tp->lv[OSMO_IE_GSM_SUB_QOS].val = pdp->qos_subscribed; |
Holger Hans Peter Freyther | 5db6857 | 2017-07-09 13:18:17 +0200 | [diff] [blame] | 601 | |
| 602 | /* Prefer PDP charging characteristics of per subscriber one */ |
| 603 | if (pdp->has_pdp_charg) { |
| 604 | tp->lv[OSMO_IE_GSM_CHARG_CHAR].len = sizeof(pdp->pdp_charg); |
| 605 | tp->lv[OSMO_IE_GSM_CHARG_CHAR].val = &pdp->pdp_charg[0]; |
| 606 | } else if (data->has_pdp_charg) { |
| 607 | tp->lv[OSMO_IE_GSM_CHARG_CHAR].len = sizeof(data->pdp_charg); |
| 608 | tp->lv[OSMO_IE_GSM_CHARG_CHAR].val = &data->pdp_charg[0]; |
| 609 | } |
Holger Hans Peter Freyther | 8cedded | 2015-04-23 11:33:35 -0400 | [diff] [blame] | 610 | } |
| 611 | |
| 612 | /** |
| 613 | * The tlv_parsed tp parameter will be modified to insert a |
| 614 | * OSMO_IE_GSM_SUB_QOS in case the data is available in the |
| 615 | * PDP context handling. |
| 616 | */ |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 617 | struct sgsn_ggsn_ctx *sgsn_mm_ctx_find_ggsn_ctx(struct sgsn_mm_ctx *mmctx, |
| 618 | struct tlv_parsed *tp, |
Holger Hans Peter Freyther | 39c430e | 2015-05-25 12:26:49 +0800 | [diff] [blame] | 619 | enum gsm48_gsm_cause *gsm_cause, |
| 620 | char *out_apn_str) |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 621 | { |
| 622 | char req_apn_str[GSM_APN_LENGTH] = {0}; |
| 623 | const struct apn_ctx *apn_ctx = NULL; |
| 624 | const char *selected_apn_str = NULL; |
| 625 | struct sgsn_subscriber_pdp_data *pdp; |
| 626 | struct sgsn_ggsn_ctx *ggsn = NULL; |
| 627 | int allow_any_apn = 0; |
| 628 | |
Holger Hans Peter Freyther | 39c430e | 2015-05-25 12:26:49 +0800 | [diff] [blame] | 629 | out_apn_str[0] = '\0'; |
| 630 | |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 631 | if (TLVP_PRESENT(tp, GSM48_IE_GSM_APN)) { |
| 632 | if (TLVP_LEN(tp, GSM48_IE_GSM_APN) >= GSM_APN_LENGTH - 1) { |
| 633 | LOGMMCTXP(LOGL_ERROR, mmctx, "APN IE too long\n"); |
| 634 | *gsm_cause = GSM_CAUSE_INV_MAND_INFO; |
| 635 | return NULL; |
| 636 | } |
| 637 | |
Harald Welte | 7e82b74 | 2017-08-12 13:43:54 +0200 | [diff] [blame] | 638 | osmo_apn_to_str(req_apn_str, |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 639 | TLVP_VAL(tp, GSM48_IE_GSM_APN), |
| 640 | TLVP_LEN(tp, GSM48_IE_GSM_APN)); |
| 641 | |
| 642 | if (strcmp(req_apn_str, "*") == 0) |
| 643 | req_apn_str[0] = 0; |
| 644 | } |
| 645 | |
Holger Hans Peter Freyther | 9270d99 | 2015-05-24 20:51:17 +0800 | [diff] [blame] | 646 | if (mmctx->subscr == NULL) |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 647 | allow_any_apn = 1; |
| 648 | |
| 649 | if (strlen(req_apn_str) == 0 && !allow_any_apn) { |
| 650 | /* No specific APN requested, check for an APN that is both |
| 651 | * granted and configured */ |
| 652 | |
| 653 | llist_for_each_entry(pdp, &mmctx->subscr->sgsn_data->pdp_list, list) { |
| 654 | if (strcmp(pdp->apn_str, "*") == 0) |
| 655 | { |
| 656 | allow_any_apn = 1; |
| 657 | selected_apn_str = ""; |
Holger Hans Peter Freyther | 5db6857 | 2017-07-09 13:18:17 +0200 | [diff] [blame] | 658 | insert_extra(tp, mmctx->subscr->sgsn_data, pdp); |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 659 | continue; |
| 660 | } |
Pau Espin Pedrol | fd4d435 | 2023-01-05 19:37:05 +0100 | [diff] [blame^] | 661 | if (!llist_empty(&sgsn->apn_list)) { |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 662 | apn_ctx = sgsn_apn_ctx_match(req_apn_str, mmctx->imsi); |
| 663 | /* Not configured */ |
| 664 | if (apn_ctx == NULL) |
| 665 | continue; |
| 666 | } |
Holger Hans Peter Freyther | 5db6857 | 2017-07-09 13:18:17 +0200 | [diff] [blame] | 667 | insert_extra(tp, mmctx->subscr->sgsn_data, pdp); |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 668 | selected_apn_str = pdp->apn_str; |
| 669 | break; |
| 670 | } |
| 671 | } else if (!allow_any_apn) { |
| 672 | /* Check whether the given APN is granted */ |
| 673 | llist_for_each_entry(pdp, &mmctx->subscr->sgsn_data->pdp_list, list) { |
| 674 | if (strcmp(pdp->apn_str, "*") == 0) { |
Holger Hans Peter Freyther | 5db6857 | 2017-07-09 13:18:17 +0200 | [diff] [blame] | 675 | insert_extra(tp, mmctx->subscr->sgsn_data, pdp); |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 676 | selected_apn_str = req_apn_str; |
| 677 | allow_any_apn = 1; |
| 678 | continue; |
| 679 | } |
| 680 | if (strcasecmp(pdp->apn_str, req_apn_str) == 0) { |
Holger Hans Peter Freyther | 5db6857 | 2017-07-09 13:18:17 +0200 | [diff] [blame] | 681 | insert_extra(tp, mmctx->subscr->sgsn_data, pdp); |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 682 | selected_apn_str = req_apn_str; |
| 683 | break; |
| 684 | } |
| 685 | } |
| 686 | } else if (strlen(req_apn_str) != 0) { |
| 687 | /* Any APN is allowed */ |
| 688 | selected_apn_str = req_apn_str; |
| 689 | } else { |
| 690 | /* Prefer the GGSN associated with the wildcard APN */ |
| 691 | selected_apn_str = ""; |
| 692 | } |
| 693 | |
| 694 | if (!allow_any_apn && selected_apn_str == NULL) { |
| 695 | /* Access not granted */ |
| 696 | LOGMMCTXP(LOGL_NOTICE, mmctx, |
| 697 | "The requested APN '%s' is not allowed\n", |
| 698 | req_apn_str); |
| 699 | *gsm_cause = GSM_CAUSE_REQ_SERV_OPT_NOTSUB; |
| 700 | return NULL; |
| 701 | } |
| 702 | |
Holger Hans Peter Freyther | 39c430e | 2015-05-25 12:26:49 +0800 | [diff] [blame] | 703 | /* copy the selected apn_str */ |
Holger Hans Peter Freyther | f2e114a | 2015-06-02 09:33:31 +0200 | [diff] [blame] | 704 | if (selected_apn_str) |
| 705 | strcpy(out_apn_str, selected_apn_str); |
| 706 | else |
| 707 | out_apn_str[0] = '\0'; |
Holger Hans Peter Freyther | 39c430e | 2015-05-25 12:26:49 +0800 | [diff] [blame] | 708 | |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 709 | if (apn_ctx == NULL && selected_apn_str) |
| 710 | apn_ctx = sgsn_apn_ctx_match(selected_apn_str, mmctx->imsi); |
| 711 | |
| 712 | if (apn_ctx != NULL) { |
| 713 | ggsn = apn_ctx->ggsn; |
Pau Espin Pedrol | fd4d435 | 2023-01-05 19:37:05 +0100 | [diff] [blame^] | 714 | } else if (llist_empty(&sgsn->apn_list)) { |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 715 | /* No configuration -> use GGSN 0 */ |
| 716 | ggsn = sgsn_ggsn_ctx_by_id(0); |
| 717 | } else if (allow_any_apn && |
| 718 | (selected_apn_str == NULL || strlen(selected_apn_str) == 0)) { |
| 719 | /* No APN given and no default configuration -> Use GGSN 0 */ |
| 720 | ggsn = sgsn_ggsn_ctx_by_id(0); |
| 721 | } else { |
| 722 | /* No matching configuration found */ |
| 723 | LOGMMCTXP(LOGL_NOTICE, mmctx, |
| 724 | "The selected APN '%s' has not been configured\n", |
| 725 | selected_apn_str); |
| 726 | *gsm_cause = GSM_CAUSE_MISSING_APN; |
| 727 | return NULL; |
| 728 | } |
| 729 | |
Holger Hans Peter Freyther | 08bb84b | 2015-05-25 14:35:10 +0800 | [diff] [blame] | 730 | if (!ggsn) { |
| 731 | LOGMMCTXP(LOGL_NOTICE, mmctx, |
| 732 | "No static GGSN configured. Selected APN '%s'\n", |
| 733 | selected_apn_str); |
Vadim Yanitskiy | 4b8e309 | 2019-07-18 15:04:46 +0700 | [diff] [blame] | 734 | *gsm_cause = GSM_CAUSE_MISSING_APN; |
| 735 | return NULL; |
Holger Hans Peter Freyther | 08bb84b | 2015-05-25 14:35:10 +0800 | [diff] [blame] | 736 | } |
| 737 | |
Jacob Erlbeck | 277b71e | 2015-02-02 18:03:05 +0100 | [diff] [blame] | 738 | LOGMMCTXP(LOGL_INFO, mmctx, |
| 739 | "Found GGSN %d for APN '%s' (requested '%s')\n", |
| 740 | ggsn->id, selected_apn_str ? selected_apn_str : "---", |
| 741 | req_apn_str); |
| 742 | |
| 743 | return ggsn; |
| 744 | } |
| 745 | |
Jacob Erlbeck | 81ffb74 | 2015-01-23 11:33:51 +0100 | [diff] [blame] | 746 | static void sgsn_llme_cleanup_free(struct gprs_llc_llme *llme) |
| 747 | { |
| 748 | struct sgsn_mm_ctx *mmctx = NULL; |
| 749 | |
| 750 | llist_for_each_entry(mmctx, &sgsn_mm_ctxts, list) { |
Harald Welte | f97ee04 | 2015-12-25 19:12:21 +0100 | [diff] [blame] | 751 | if (llme == mmctx->gb.llme) { |
Jacob Erlbeck | 81ffb74 | 2015-01-23 11:33:51 +0100 | [diff] [blame] | 752 | gsm0408_gprs_access_cancelled(mmctx, SGSN_ERROR_CAUSE_NONE); |
| 753 | return; |
| 754 | } |
| 755 | } |
| 756 | |
| 757 | /* No MM context found */ |
| 758 | LOGP(DGPRS, LOGL_INFO, "Deleting orphaned LLME, TLLI 0x%08x\n", |
| 759 | llme->tlli); |
Max | 3955025 | 2016-06-28 17:39:20 +0200 | [diff] [blame] | 760 | gprs_llgmm_unassign(llme); |
Jacob Erlbeck | 81ffb74 | 2015-01-23 11:33:51 +0100 | [diff] [blame] | 761 | } |
| 762 | |
| 763 | static void sgsn_llme_check_cb(void *data_) |
| 764 | { |
| 765 | struct gprs_llc_llme *llme, *llme_tmp; |
| 766 | struct timespec now_tp; |
| 767 | time_t now, age; |
| 768 | time_t max_age = gprs_max_time_to_idle(); |
| 769 | |
| 770 | int rc; |
| 771 | |
Pau Espin Pedrol | 36abead | 2018-08-17 13:27:20 +0200 | [diff] [blame] | 772 | rc = osmo_clock_gettime(CLOCK_MONOTONIC, &now_tp); |
Jacob Erlbeck | 81ffb74 | 2015-01-23 11:33:51 +0100 | [diff] [blame] | 773 | OSMO_ASSERT(rc >= 0); |
| 774 | now = now_tp.tv_sec; |
| 775 | |
| 776 | LOGP(DGPRS, LOGL_DEBUG, |
| 777 | "Checking for inactive LLMEs, time = %u\n", (unsigned)now); |
| 778 | |
| 779 | llist_for_each_entry_safe(llme, llme_tmp, &gprs_llc_llmes, list) { |
| 780 | if (llme->age_timestamp == GPRS_LLME_RESET_AGE) |
| 781 | llme->age_timestamp = now; |
| 782 | |
| 783 | age = now - llme->age_timestamp; |
| 784 | |
| 785 | if (age > max_age || age < 0) { |
| 786 | LOGP(DGPRS, LOGL_INFO, |
| 787 | "Inactivity timeout for TLLI 0x%08x, age %d\n", |
| 788 | llme->tlli, (int)age); |
| 789 | sgsn_llme_cleanup_free(llme); |
| 790 | } |
| 791 | } |
| 792 | |
| 793 | osmo_timer_schedule(&sgsn->llme_timer, GPRS_LLME_CHECK_TICK, 0); |
| 794 | } |
| 795 | |
Pau Espin Pedrol | e659f75 | 2023-01-05 17:20:37 +0100 | [diff] [blame] | 796 | static int sgsn_instance_talloc_destructor(struct sgsn_instance *sgi) |
| 797 | { |
| 798 | sgsn_cdr_release(sgi); |
| 799 | osmo_timer_del(&sgi->llme_timer); |
| 800 | rate_ctr_group_free(sgi->rate_ctrs); |
| 801 | return 0; |
| 802 | } |
| 803 | |
Pau Espin Pedrol | 73b2bf3 | 2018-10-30 18:00:57 +0100 | [diff] [blame] | 804 | struct sgsn_instance *sgsn_instance_alloc(void *talloc_ctx) |
| 805 | { |
| 806 | struct sgsn_instance *inst; |
| 807 | inst = talloc_zero(talloc_ctx, struct sgsn_instance); |
Pau Espin Pedrol | e659f75 | 2023-01-05 17:20:37 +0100 | [diff] [blame] | 808 | |
| 809 | talloc_set_destructor(inst, sgsn_instance_talloc_destructor); |
| 810 | |
Pau Espin Pedrol | 73b2bf3 | 2018-10-30 18:00:57 +0100 | [diff] [blame] | 811 | inst->cfg.gtp_statedir = talloc_strdup(inst, "./"); |
| 812 | inst->cfg.auth_policy = SGSN_AUTH_POLICY_CLOSED; |
Pau Espin Pedrol | d1463bc | 2019-06-13 19:03:25 +0200 | [diff] [blame] | 813 | inst->cfg.require_authentication = true; /* only applies if auth_policy is REMOTE */ |
Pau Espin Pedrol | 73b2bf3 | 2018-10-30 18:00:57 +0100 | [diff] [blame] | 814 | inst->cfg.gsup_server_port = OSMO_GSUP_PORT; |
Pau Espin Pedrol | e5c8998 | 2021-05-03 18:16:42 +0200 | [diff] [blame] | 815 | |
Pau Espin Pedrol | e659f75 | 2023-01-05 17:20:37 +0100 | [diff] [blame] | 816 | inst->cfg.T_defs = sgsn_T_defs; |
| 817 | osmo_tdefs_reset(inst->cfg.T_defs); |
| 818 | inst->cfg.T_defs_gtp = gtp_T_defs; |
| 819 | osmo_tdefs_reset(inst->cfg.T_defs_gtp); |
| 820 | |
| 821 | inst->rate_ctrs = rate_ctr_group_alloc(inst, &sgsn_ctrg_desc, 0); |
| 822 | OSMO_ASSERT(inst->rate_ctrs); |
| 823 | |
Pau Espin Pedrol | fd4d435 | 2023-01-05 19:37:05 +0100 | [diff] [blame^] | 824 | INIT_LLIST_HEAD(&inst->apn_list); |
Pau Espin Pedrol | 44bde6b | 2023-01-05 17:23:26 +0100 | [diff] [blame] | 825 | INIT_LLIST_HEAD(&inst->ggsn_list); |
Pau Espin Pedrol | e5c8998 | 2021-05-03 18:16:42 +0200 | [diff] [blame] | 826 | INIT_LLIST_HEAD(&inst->mme_list); |
Pau Espin Pedrol | e659f75 | 2023-01-05 17:20:37 +0100 | [diff] [blame] | 827 | |
| 828 | osmo_timer_setup(&inst->llme_timer, sgsn_llme_check_cb, NULL); |
| 829 | osmo_timer_schedule(&inst->llme_timer, GPRS_LLME_CHECK_TICK, 0); |
| 830 | /* These are mostly setting up stuff not related to VTY cfg, so they can be set up here: */ |
| 831 | sgsn_auth_init(inst); |
| 832 | sgsn_cdr_init(inst); |
Pau Espin Pedrol | 73b2bf3 | 2018-10-30 18:00:57 +0100 | [diff] [blame] | 833 | return inst; |
| 834 | } |
| 835 | |
Pau Espin Pedrol | e659f75 | 2023-01-05 17:20:37 +0100 | [diff] [blame] | 836 | /* To be called after VTY config parsing: */ |
| 837 | int sgsn_inst_init(struct sgsn_instance *sgsn) |
Jacob Erlbeck | 81ffb74 | 2015-01-23 11:33:51 +0100 | [diff] [blame] | 838 | { |
Pau Espin Pedrol | e659f75 | 2023-01-05 17:20:37 +0100 | [diff] [blame] | 839 | int rc; |
| 840 | |
| 841 | /* start control interface after reading config for |
| 842 | * ctrl_vty_get_bind_addr() */ |
| 843 | sgsn->ctrlh = ctrl_interface_setup(NULL, OSMO_CTRL_PORT_SGSN, NULL); |
| 844 | if (!sgsn->ctrlh) { |
| 845 | LOGP(DGPRS, LOGL_ERROR, "Failed to create CTRL interface.\n"); |
| 846 | return -EIO; |
| 847 | } |
| 848 | |
| 849 | rc = sgsn_ctrl_cmds_install(); |
| 850 | if (rc != 0) { |
| 851 | LOGP(DGPRS, LOGL_ERROR, "Failed to install CTRL commands.\n"); |
| 852 | return -EFAULT; |
| 853 | } |
| 854 | |
| 855 | rc = gprs_subscr_init(sgsn); |
| 856 | if (rc < 0) { |
| 857 | LOGP(DGPRS, LOGL_FATAL, "Cannot set up SGSN\n"); |
| 858 | return rc; |
| 859 | } |
| 860 | return 0; |
Jacob Erlbeck | 81ffb74 | 2015-01-23 11:33:51 +0100 | [diff] [blame] | 861 | } |