Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 1 | /* |
| 2 | * (C) 2011 by Holger Hans Peter Freyther |
| 3 | * (C) 2011 by On-Waves |
Harald Welte | e08da97 | 2017-11-13 01:00:26 +0900 | [diff] [blame] | 4 | * (C) 2014 by sysmocom - s.f.m.c. GmbH, Author: Daniel Willmann <dwillmann@sysmocom.de> |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 5 | * All Rights Reserved |
| 6 | * |
Harald Welte | e08da97 | 2017-11-13 01:00:26 +0900 | [diff] [blame] | 7 | * SPDX-License-Identifier: GPL-2.0+ |
| 8 | * |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 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 |
| 17 | * GNU General Public License for more details. |
| 18 | * |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 19 | */ |
| 20 | |
Holger Hans Peter Freyther | af723a4 | 2012-12-26 10:51:00 +0100 | [diff] [blame] | 21 | #include <osmocom/core/application.h> |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 22 | #include <osmocom/core/logging.h> |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 23 | #include <osmocom/core/utils.h> |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 24 | #include <osmocom/gsm/lapdm.h> |
| 25 | #include <osmocom/gsm/rsl.h> |
| 26 | |
| 27 | #include <errno.h> |
Neels Hofmeyr | a829b45 | 2018-04-05 03:02:35 +0200 | [diff] [blame] | 28 | #include <talloc.h> |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 29 | |
| 30 | #include <string.h> |
| 31 | |
| 32 | #define CHECK_RC(rc) \ |
| 33 | if (rc != 0) { \ |
| 34 | printf("Operation failed rc=%d on %s:%d\n", rc, __FILE__, __LINE__); \ |
| 35 | abort(); \ |
| 36 | } |
| 37 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 38 | static struct log_info info = {}; |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame] | 39 | static int dummy_l1_header_len = 0; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 40 | |
| 41 | struct lapdm_polling_state { |
| 42 | struct lapdm_channel *bts; |
| 43 | int bts_read; |
| 44 | |
| 45 | struct lapdm_channel *ms; |
| 46 | int ms_read; |
| 47 | }; |
| 48 | |
| 49 | static struct msgb *msgb_from_array(const uint8_t *data, int len) |
| 50 | { |
| 51 | struct msgb *msg = msgb_alloc_headroom(4096, 128, "data"); |
| 52 | msg->l3h = msgb_put(msg, len); |
Harald Welte | 53e2672 | 2017-01-04 11:18:59 +0100 | [diff] [blame] | 53 | if (data && len) |
| 54 | memcpy(msg->l3h, data, len); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 55 | return msg; |
| 56 | } |
| 57 | |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 58 | /* |
| 59 | * Test data is below... |
| 60 | */ |
| 61 | static const uint8_t cm[] = { |
| 62 | 0x05, 0x24, 0x31, 0x03, 0x50, 0x18, 0x93, 0x08, |
| 63 | 0x29, 0x47, 0x80, 0x00, 0x00, 0x00, 0x00, 0x80, |
| 64 | }; |
| 65 | |
Vadim Yanitskiy | 9ff1c1a | 2020-08-27 18:29:46 +0700 | [diff] [blame] | 66 | static const uint8_t ua_cm[] = { |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 67 | 0x01, 0x73, 0x41, 0x05, 0x24, 0x31, 0x03, 0x50, |
| 68 | 0x18, 0x93, 0x08, 0x29, 0x47, 0x80, 0x00, 0x00, |
| 69 | 0x00, 0x00, 0x80, 0x2b, 0x2b, 0x2b, 0x2b |
| 70 | }; |
| 71 | |
Vadim Yanitskiy | 488989d | 2020-08-27 19:35:02 +0700 | [diff] [blame] | 72 | static const uint8_t pr[] = { |
| 73 | 0x06, 0x27, 0x07, 0x03, 0x50, 0x58, 0x92, 0x05, |
| 74 | 0xf4, 0x44, 0x59, 0xba, 0x63, |
| 75 | }; |
| 76 | |
| 77 | static const uint8_t ua_pr[] = { |
| 78 | 0x01, 0x73, 0x35, 0x06, 0x27, 0x07, 0x03, 0x50, |
| 79 | 0x58, 0x92, 0x05, 0xf4, 0x44, 0x59, 0xba, 0x63, |
| 80 | 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, |
| 81 | }; |
| 82 | |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 83 | static const uint8_t mm[] = { |
Holger Hans Peter Freyther | 3a5f08c | 2012-01-12 23:12:28 +0100 | [diff] [blame] | 84 | 0x00, 0x0c, 0x00, 0x03, 0x01, 0x01, 0x20, 0x02, |
| 85 | 0x00, 0x0b, 0x00, 0x03, 0x05, 0x04, 0x0d |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 86 | }; |
| 87 | |
| 88 | static const uint8_t dummy1[] = { |
| 89 | 0xab, 0x03, 0x30, 0x60, 0x06, |
| 90 | }; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 91 | |
Daniel Willmann | e523392 | 2012-12-25 23:15:50 +0100 | [diff] [blame] | 92 | static const uint8_t rel_req[] = { |
| 93 | 0x02, 0x07, 0x01, 0x0a, 0x02, 0x40, 0x14, 0x01 |
| 94 | }; |
| 95 | |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 96 | static const uint8_t est_req_sdcch_sapi3[] = { |
| 97 | 0x02, 0x04, 0x01, 0x20, 0x02, 0x03 |
| 98 | }; |
| 99 | |
| 100 | static const uint8_t est_req_sacch_sapi3[] = { |
| 101 | 0x02, 0x04, 0x01, 0x0b, 0x02, 0x43 |
| 102 | }; |
| 103 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 104 | static struct msgb *create_cm_serv_req(void) |
| 105 | { |
| 106 | struct msgb *msg; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 107 | |
| 108 | msg = msgb_from_array(cm, sizeof(cm)); |
| 109 | rsl_rll_push_l3(msg, RSL_MT_EST_REQ, 0, 0, 1); |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame] | 110 | msgb_push(msg, dummy_l1_header_len); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 111 | return msg; |
| 112 | } |
| 113 | |
| 114 | static struct msgb *create_mm_id_req(void) |
| 115 | { |
| 116 | struct msgb *msg; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 117 | |
| 118 | msg = msgb_from_array(mm, sizeof(mm)); |
Holger Hans Peter Freyther | 3a5f08c | 2012-01-12 23:12:28 +0100 | [diff] [blame] | 119 | msg->l2h = msg->data + 3; |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 120 | OSMO_ASSERT(msgb_l2len(msg) == 12); |
Holger Hans Peter Freyther | 3a5f08c | 2012-01-12 23:12:28 +0100 | [diff] [blame] | 121 | msg->l3h = msg->l2h + 6; |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 122 | OSMO_ASSERT(msgb_l3len(msg) == 6); |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame] | 123 | msgb_push(msg, dummy_l1_header_len); |
Holger Hans Peter Freyther | 3a5f08c | 2012-01-12 23:12:28 +0100 | [diff] [blame] | 124 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 125 | return msg; |
| 126 | } |
| 127 | |
Holger Hans Peter Freyther | 90656db | 2012-01-13 05:49:29 +0800 | [diff] [blame] | 128 | static struct msgb *create_empty_msg(void) |
| 129 | { |
| 130 | struct msgb *msg; |
| 131 | |
| 132 | msg = msgb_from_array(NULL, 0); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 133 | OSMO_ASSERT(msgb_l3len(msg) == 0); |
Holger Hans Peter Freyther | 90656db | 2012-01-13 05:49:29 +0800 | [diff] [blame] | 134 | rsl_rll_push_l3(msg, RSL_MT_DATA_REQ, 0, 0, 1); |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame] | 135 | msgb_push(msg, dummy_l1_header_len); |
Holger Hans Peter Freyther | 90656db | 2012-01-13 05:49:29 +0800 | [diff] [blame] | 136 | return msg; |
| 137 | } |
| 138 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 139 | static struct msgb *create_dummy_data_req(void) |
| 140 | { |
| 141 | struct msgb *msg; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 142 | |
| 143 | msg = msgb_from_array(dummy1, sizeof(dummy1)); |
| 144 | rsl_rll_push_l3(msg, RSL_MT_DATA_REQ, 0, 0, 1); |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame] | 145 | msgb_push(msg, dummy_l1_header_len); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 146 | return msg; |
| 147 | } |
| 148 | |
Daniel Willmann | e523392 | 2012-12-25 23:15:50 +0100 | [diff] [blame] | 149 | static struct msgb *create_rel_req(void) |
| 150 | { |
| 151 | struct msgb *msg; |
| 152 | |
| 153 | msg = msgb_from_array(rel_req, sizeof(rel_req)); |
| 154 | msg->l2h = msg->data; |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame] | 155 | msgb_push(msg, dummy_l1_header_len); |
Daniel Willmann | e523392 | 2012-12-25 23:15:50 +0100 | [diff] [blame] | 156 | msg->l3h = msg->l2h + sizeof(struct abis_rsl_rll_hdr); |
| 157 | return msg; |
| 158 | } |
| 159 | |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 160 | static struct msgb *create_est_req(const uint8_t *est_req, size_t est_req_size) |
| 161 | { |
| 162 | struct msgb *msg; |
| 163 | |
| 164 | msg = msgb_from_array(est_req, est_req_size); |
| 165 | msg->l2h = msg->data; |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame] | 166 | msgb_push(msg, dummy_l1_header_len); |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 167 | msg->l3h = msg->l2h + sizeof(struct abis_rsl_rll_hdr); |
| 168 | return msg; |
| 169 | } |
| 170 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 171 | static int send(struct msgb *in_msg, struct lapdm_channel *chan) |
| 172 | { |
| 173 | struct osmo_phsap_prim pp; |
| 174 | struct msgb *msg; |
| 175 | int rc; |
| 176 | |
| 177 | msg = msgb_alloc_headroom(128, 64, "PH-DATA.ind"); |
| 178 | osmo_prim_init(&pp.oph, SAP_GSM_PH, PRIM_PH_DATA, |
| 179 | PRIM_OP_INDICATION, msg); |
| 180 | /* copy over actual MAC block */ |
| 181 | msg->l2h = msgb_put(msg, msgb_l2len(in_msg)); |
| 182 | memcpy(msg->l2h, in_msg->l2h, msgb_l2len(in_msg)); |
| 183 | |
| 184 | /* LAPDm requires those... */ |
| 185 | pp.u.data.chan_nr = 0; |
| 186 | pp.u.data.link_id = 0; |
| 187 | /* feed into the LAPDm code of libosmogsm */ |
| 188 | rc = lapdm_phsap_up(&pp.oph, &chan->lapdm_dcch); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 189 | OSMO_ASSERT(rc == 0 || rc == -EBUSY); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 190 | return 0; |
| 191 | } |
| 192 | |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 193 | /* Receive from L1 */ |
| 194 | static int send_buf(const uint8_t *buf, size_t len, struct lapdm_channel *chan) |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 195 | { |
| 196 | struct osmo_phsap_prim pp; |
| 197 | struct msgb *msg; |
| 198 | int rc; |
| 199 | |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 200 | msg = msgb_from_array(buf, len); |
| 201 | msg->l2h = msg->l3h; |
| 202 | msg->l3h = NULL; |
| 203 | osmo_prim_init(&pp.oph, SAP_GSM_PH, PRIM_PH_DATA, |
| 204 | PRIM_OP_INDICATION, msg); |
| 205 | |
| 206 | /* LAPDm requires those... */ |
| 207 | pp.u.data.chan_nr = 0; |
| 208 | pp.u.data.link_id = 0; |
| 209 | /* feed into the LAPDm code of libosmogsm */ |
| 210 | rc = lapdm_phsap_up(&pp.oph, &chan->lapdm_dcch); |
| 211 | OSMO_ASSERT(rc == 0 || rc == -EBUSY); |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | /* Receive from L3 */ |
| 216 | static int enqueue_buf(const uint8_t *buf, size_t len, int sapi, struct lapdm_channel *chan) |
| 217 | { |
| 218 | struct osmo_dlsap_prim dp; |
| 219 | struct msgb *msg; |
| 220 | int rc; |
| 221 | struct lapdm_datalink *dl; |
| 222 | |
| 223 | dl = lapdm_datalink_for_sapi(&chan->lapdm_dcch, sapi); |
| 224 | OSMO_ASSERT(dl); |
| 225 | |
| 226 | msg = msgb_from_array(buf, len); |
| 227 | osmo_prim_init(&dp.oph, 0, PRIM_DL_DATA, PRIM_OP_REQUEST, msg); |
| 228 | |
| 229 | rc = lapd_recv_dlsap(&dp, &dl->dl.lctx); |
| 230 | OSMO_ASSERT(rc == 0 || rc == -EBUSY); |
| 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | static int send_sabm(struct lapdm_channel *chan, int sapi, const uint8_t *data, size_t len) |
| 235 | { |
| 236 | struct osmo_phsap_prim pp; |
| 237 | struct msgb *msg; |
| 238 | int rc; |
| 239 | |
| 240 | OSMO_ASSERT(sapi == 0 || sapi == 3); |
| 241 | |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 242 | msg = msgb_alloc_headroom(128, 64, "PH-DATA.ind"); |
| 243 | osmo_prim_init(&pp.oph, SAP_GSM_PH, PRIM_PH_DATA, |
| 244 | PRIM_OP_INDICATION, msg); |
| 245 | /* copy over actual MAC block */ |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 246 | msg->l2h = msgb_put(msg, 3 + len); |
| 247 | msg->l2h[0] = 0x01 | (sapi << 2); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 248 | msg->l2h[1] = 0x3f; |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 249 | msg->l2h[2] = 0x01 | (len << 2); |
| 250 | |
| 251 | if (len > 0) |
| 252 | memcpy(msg->l2h + 3, data, len); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 253 | |
| 254 | /* LAPDm requires those... */ |
| 255 | pp.u.data.chan_nr = 0; |
| 256 | pp.u.data.link_id = 0; |
| 257 | /* feed into the LAPDm code of libosmogsm */ |
| 258 | rc = lapdm_phsap_up(&pp.oph, &chan->lapdm_dcch); |
| 259 | OSMO_ASSERT(rc == 0 || rc == -EBUSY); |
| 260 | return 0; |
| 261 | } |
| 262 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 263 | /* |
| 264 | * I get called from the LAPDm code when something was sent my way... |
| 265 | */ |
| 266 | static int bts_to_ms_tx_cb(struct msgb *in_msg, struct lapdm_entity *le, void *_ctx) |
| 267 | { |
| 268 | struct lapdm_polling_state *state = _ctx; |
| 269 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 270 | |
| 271 | printf("%s: MS->BTS(us) message %d\n", __func__, msgb_length(in_msg)); |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 272 | |
| 273 | |
| 274 | if (state->bts_read == 0) { |
| 275 | printf("BTS: Verifying CM request.\n"); |
Holger Hans Peter Freyther | dd34ed5 | 2013-06-19 08:16:56 +0200 | [diff] [blame] | 276 | OSMO_ASSERT(msgb_l3len(in_msg) == ARRAY_SIZE(cm)); |
| 277 | OSMO_ASSERT(memcmp(in_msg->l3h, cm, |
| 278 | ARRAY_SIZE(cm)) == 0); |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 279 | } else if (state->bts_read == 1) { |
| 280 | printf("BTS: Verifying dummy message.\n"); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 281 | OSMO_ASSERT(msgb_l3len(in_msg) == ARRAY_SIZE(dummy1)); |
| 282 | OSMO_ASSERT(memcmp(in_msg->l3h, dummy1, |
| 283 | ARRAY_SIZE(dummy1)) == 0); |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 284 | } else { |
| 285 | printf("BTS: Do not know to verify: %d\n", state->bts_read); |
| 286 | } |
| 287 | |
| 288 | state->bts_read += 1; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 289 | msgb_free(in_msg); |
| 290 | |
| 291 | return 0; |
| 292 | } |
| 293 | |
| 294 | static int ms_to_bts_l1_cb(struct osmo_prim_hdr *oph, void *_ctx) |
| 295 | { |
| 296 | int rc; |
| 297 | struct lapdm_polling_state *state = _ctx; |
| 298 | printf("%s: MS(us) -> BTS prim message\n", __func__); |
| 299 | |
| 300 | /* i stuff it into the LAPDm channel of the BTS */ |
| 301 | rc = send(oph->msg, state->bts); |
| 302 | msgb_free(oph->msg); |
Holger Hans Peter Freyther | af723a4 | 2012-12-26 10:51:00 +0100 | [diff] [blame] | 303 | return rc; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 304 | } |
| 305 | |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 306 | static int dequeue_prim(struct lapdm_entity *le, struct osmo_phsap_prim *pp, |
| 307 | const char *queue_name) |
| 308 | { |
| 309 | int rc; |
| 310 | int l2_header_len; |
| 311 | int l3_len = 0; |
| 312 | |
| 313 | /* Take message from queue */ |
| 314 | rc = lapdm_phsap_dequeue_prim(le, pp); |
| 315 | |
Vadim Yanitskiy | 45a90cf | 2020-08-27 19:29:26 +0700 | [diff] [blame] | 316 | printf("lapdm_phsap_dequeue_prim(): got rc %d: %s\n", |
| 317 | rc, rc <= 0 ? strerror(-rc) : "-"); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 318 | |
| 319 | if (rc < 0) |
| 320 | return rc; |
| 321 | |
| 322 | l2_header_len = msgb_l2len(pp->oph.msg); |
| 323 | if (msgb_l3(pp->oph.msg)) { |
| 324 | l3_len = msgb_l3len(pp->oph.msg); |
| 325 | l2_header_len -= l3_len; |
| 326 | } else |
Vadim Yanitskiy | 45a90cf | 2020-08-27 19:29:26 +0700 | [diff] [blame] | 327 | printf("MSGB: L3 is undefined\n"); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 328 | |
| 329 | if (l2_header_len < 0 || l2_header_len > pp->oph.msg->data_len) { |
Vadim Yanitskiy | 45a90cf | 2020-08-27 19:29:26 +0700 | [diff] [blame] | 330 | printf("MSGB inconsistent: data = %p, l2 = %p, l3 = %p, tail = %p\n", |
| 331 | pp->oph.msg->data, |
| 332 | pp->oph.msg->l2h, |
| 333 | pp->oph.msg->l3h, |
| 334 | pp->oph.msg->tail); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 335 | l2_header_len = -1; |
| 336 | } |
| 337 | |
| 338 | printf("Took message from %s queue: " |
| 339 | "L2 header size %d, L3 size %d, " |
| 340 | "SAP %#x, %d/%d, Link 0x%02x\n", |
| 341 | queue_name, |
| 342 | l2_header_len, l3_len, |
| 343 | pp->oph.sap, pp->oph.primitive, pp->oph.operation, |
| 344 | pp->u.data.link_id); |
| 345 | printf("Message: %s\n", msgb_hexdump(pp->oph.msg)); |
| 346 | |
| 347 | return rc; |
| 348 | } |
| 349 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 350 | static int ms_to_bts_tx_cb(struct msgb *msg, struct lapdm_entity *le, void *_ctx) |
| 351 | { |
| 352 | struct lapdm_polling_state *state = _ctx; |
| 353 | |
| 354 | printf("%s: BTS->MS(us) message %d\n", __func__, msgb_length(msg)); |
| 355 | |
| 356 | if (state->ms_read == 0) { |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 357 | struct abis_rsl_rll_hdr hdr; |
| 358 | |
| 359 | printf("MS: Verifying incoming primitive.\n"); |
Pau Espin Pedrol | 9dd3bf0 | 2016-02-29 08:49:22 -0500 | [diff] [blame] | 360 | OSMO_ASSERT(msg->len == sizeof(struct abis_rsl_rll_hdr)); |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 361 | |
| 362 | /* verify the header */ |
| 363 | memset(&hdr, 0, sizeof(hdr)); |
| 364 | rsl_init_rll_hdr(&hdr, RSL_MT_EST_CONF); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 365 | OSMO_ASSERT(memcmp(msg->data, &hdr, sizeof(hdr)) == 0); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 366 | } else if (state->ms_read == 1) { |
Holger Hans Peter Freyther | 3a5f08c | 2012-01-12 23:12:28 +0100 | [diff] [blame] | 367 | printf("MS: Verifying incoming MM message: %d\n", msgb_l3len(msg)); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 368 | OSMO_ASSERT(msgb_l3len(msg) == 3); |
| 369 | OSMO_ASSERT(memcmp(msg->l3h, &mm[12], msgb_l3len(msg)) == 0); |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 370 | } else { |
| 371 | printf("MS: Do not know to verify: %d\n", state->ms_read); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | state->ms_read += 1; |
| 375 | msgb_free(msg); |
| 376 | return 0; |
| 377 | } |
| 378 | |
Harald Welte | e61d459 | 2022-11-03 11:05:58 +0100 | [diff] [blame] | 379 | static void test_lapdm_polling(void) |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 380 | { |
| 381 | printf("I do some very simple LAPDm test.\n"); |
| 382 | |
| 383 | int rc; |
| 384 | struct lapdm_polling_state test_state; |
| 385 | struct osmo_phsap_prim pp; |
| 386 | |
| 387 | /* Configure LAPDm on both sides */ |
| 388 | struct lapdm_channel bts_to_ms_channel; |
| 389 | struct lapdm_channel ms_to_bts_channel; |
| 390 | memset(&bts_to_ms_channel, 0, sizeof(bts_to_ms_channel)); |
| 391 | memset(&ms_to_bts_channel, 0, sizeof(ms_to_bts_channel)); |
| 392 | |
| 393 | memset(&test_state, 0, sizeof(test_state)); |
| 394 | test_state.bts = &bts_to_ms_channel; |
| 395 | test_state.ms = &ms_to_bts_channel; |
| 396 | |
| 397 | /* BTS to MS in polling mode */ |
| 398 | lapdm_channel_init(&bts_to_ms_channel, LAPDM_MODE_BTS); |
| 399 | lapdm_channel_set_flags(&bts_to_ms_channel, LAPDM_ENT_F_POLLING_ONLY); |
| 400 | lapdm_channel_set_l1(&bts_to_ms_channel, NULL, &test_state); |
| 401 | lapdm_channel_set_l3(&bts_to_ms_channel, bts_to_ms_tx_cb, &test_state); |
| 402 | |
| 403 | /* MS to BTS in direct mode */ |
| 404 | lapdm_channel_init(&ms_to_bts_channel, LAPDM_MODE_MS); |
| 405 | lapdm_channel_set_l1(&ms_to_bts_channel, ms_to_bts_l1_cb, &test_state); |
| 406 | lapdm_channel_set_l3(&ms_to_bts_channel, ms_to_bts_tx_cb, &test_state); |
| 407 | |
| 408 | /* |
| 409 | * We try to send messages from the MS to the BTS to the MS.. |
| 410 | */ |
| 411 | /* 1. Start with MS -> BTS, BTS should have a pending message */ |
| 412 | printf("Establishing link.\n"); |
| 413 | lapdm_rslms_recvmsg(create_cm_serv_req(), &ms_to_bts_channel); |
| 414 | |
| 415 | /* 2. Poll on the BTS for sending out a confirmation */ |
| 416 | printf("\nConfirming\n"); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 417 | OSMO_ASSERT(test_state.bts_read == 1); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 418 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 419 | CHECK_RC(rc); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 420 | OSMO_ASSERT(pp.oph.msg->data == pp.oph.msg->l2h); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 421 | send(pp.oph.msg, &ms_to_bts_channel); |
| 422 | msgb_free(pp.oph.msg); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 423 | OSMO_ASSERT(test_state.ms_read == 1); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 424 | |
| 425 | /* 3. Send some data to the MS */ |
| 426 | printf("\nSending back to MS\n"); |
| 427 | lapdm_rslms_recvmsg(create_mm_id_req(), &bts_to_ms_channel); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 428 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 429 | CHECK_RC(rc); |
| 430 | send(pp.oph.msg, &ms_to_bts_channel); |
| 431 | msgb_free(pp.oph.msg); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 432 | OSMO_ASSERT(test_state.ms_read == 2); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 433 | |
| 434 | /* verify that there is nothing more to poll */ |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 435 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 436 | OSMO_ASSERT(rc < 0); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 437 | |
| 438 | /* 3. And back to the BTS */ |
| 439 | printf("\nSending back to BTS\n"); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 440 | OSMO_ASSERT(test_state.ms_read == 2); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 441 | lapdm_rslms_recvmsg(create_dummy_data_req(), &ms_to_bts_channel); |
| 442 | |
| 443 | |
Holger Hans Peter Freyther | 3a5f08c | 2012-01-12 23:12:28 +0100 | [diff] [blame] | 444 | /* 4. And back to the MS, but let's move data/l2h apart */ |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 445 | OSMO_ASSERT(test_state.bts_read == 2); |
| 446 | OSMO_ASSERT(test_state.ms_read == 2); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 447 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 448 | CHECK_RC(rc); |
| 449 | send(pp.oph.msg, &ms_to_bts_channel); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 450 | OSMO_ASSERT(test_state.ms_read == 2); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 451 | msgb_free(pp.oph.msg); |
| 452 | |
| 453 | /* verify that there is nothing more to poll */ |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 454 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 455 | OSMO_ASSERT(rc < 0); |
Jacob Erlbeck | 7d5f17a | 2014-02-28 15:54:03 +0100 | [diff] [blame] | 456 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_acch, &pp, "ACCH"); |
| 457 | OSMO_ASSERT(rc < 0); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 458 | |
Holger Hans Peter Freyther | 90656db | 2012-01-13 05:49:29 +0800 | [diff] [blame] | 459 | /* check sending an empty L3 message fails */ |
| 460 | rc = lapdm_rslms_recvmsg(create_empty_msg(), &bts_to_ms_channel); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 461 | OSMO_ASSERT(rc == -1); |
| 462 | OSMO_ASSERT(test_state.ms_read == 2); |
Holger Hans Peter Freyther | 90656db | 2012-01-13 05:49:29 +0800 | [diff] [blame] | 463 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 464 | /* clean up */ |
| 465 | lapdm_channel_exit(&bts_to_ms_channel); |
| 466 | lapdm_channel_exit(&ms_to_bts_channel); |
Holger Hans Peter Freyther | ce397de | 2013-10-26 13:35:15 +0200 | [diff] [blame] | 467 | |
| 468 | /* Check if exit is idempotent */ |
| 469 | lapdm_channel_exit(&bts_to_ms_channel); |
| 470 | lapdm_channel_exit(&ms_to_bts_channel); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 471 | } |
| 472 | |
Harald Welte | e61d459 | 2022-11-03 11:05:58 +0100 | [diff] [blame] | 473 | static void test_lapdm_contention_resolution(void) |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 474 | { |
| 475 | printf("I test contention resultion by having two mobiles collide and " |
| 476 | "first mobile repeating SABM.\n"); |
| 477 | |
| 478 | int rc; |
| 479 | struct lapdm_polling_state test_state; |
| 480 | struct osmo_phsap_prim pp; |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 481 | uint8_t *cm2; |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 482 | |
| 483 | /* Configure LAPDm on both sides */ |
| 484 | struct lapdm_channel bts_to_ms_channel; |
| 485 | memset(&bts_to_ms_channel, 0, sizeof(bts_to_ms_channel)); |
| 486 | |
| 487 | memset(&test_state, 0, sizeof(test_state)); |
| 488 | test_state.bts = &bts_to_ms_channel; |
| 489 | |
| 490 | /* BTS to MS in polling mode */ |
| 491 | lapdm_channel_init(&bts_to_ms_channel, LAPDM_MODE_BTS); |
| 492 | lapdm_channel_set_flags(&bts_to_ms_channel, LAPDM_ENT_F_POLLING_ONLY); |
| 493 | lapdm_channel_set_l1(&bts_to_ms_channel, NULL, &test_state); |
| 494 | lapdm_channel_set_l3(&bts_to_ms_channel, bts_to_ms_tx_cb, &test_state); |
| 495 | |
| 496 | /* Send SABM MS 1, we must get UA */ |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 497 | send_sabm(&bts_to_ms_channel, 0, cm, sizeof(cm)); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 498 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 499 | CHECK_RC(rc); |
Vadim Yanitskiy | 9ff1c1a | 2020-08-27 18:29:46 +0700 | [diff] [blame] | 500 | OSMO_ASSERT(memcmp(pp.oph.msg->l2h, ua_cm, ARRAY_SIZE(ua_cm)) == 0); |
Neels Hofmeyr | dd24560 | 2017-11-16 16:25:08 +0100 | [diff] [blame] | 501 | msgb_free(pp.oph.msg); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 502 | |
| 503 | /* Send SABM MS 2, we must get nothing, due to collision */ |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 504 | cm2 = malloc(sizeof(cm)); |
| 505 | memcpy(cm2, cm, sizeof(cm)); |
| 506 | cm2[0] += 1; |
| 507 | send_sabm(&bts_to_ms_channel, 0, cm2, sizeof(cm2)); |
| 508 | free(cm2); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 509 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 510 | OSMO_ASSERT(rc == -ENODEV); |
| 511 | |
| 512 | /* Send SABM MS 1 again, we must get UA gain */ |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 513 | send_sabm(&bts_to_ms_channel, 0, cm, sizeof(cm)); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 514 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 515 | CHECK_RC(rc); |
Vadim Yanitskiy | 9ff1c1a | 2020-08-27 18:29:46 +0700 | [diff] [blame] | 516 | OSMO_ASSERT(memcmp(pp.oph.msg->l2h, ua_cm, ARRAY_SIZE(ua_cm)) == 0); |
Neels Hofmeyr | dd24560 | 2017-11-16 16:25:08 +0100 | [diff] [blame] | 517 | msgb_free(pp.oph.msg); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 518 | |
| 519 | /* clean up */ |
| 520 | lapdm_channel_exit(&bts_to_ms_channel); |
Holger Hans Peter Freyther | ce397de | 2013-10-26 13:35:15 +0200 | [diff] [blame] | 521 | |
| 522 | /* idempotent */ |
| 523 | lapdm_channel_exit(&bts_to_ms_channel); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 524 | } |
| 525 | |
Harald Welte | e61d459 | 2022-11-03 11:05:58 +0100 | [diff] [blame] | 526 | static void test_lapdm_early_release(void) |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 527 | { |
| 528 | printf("I test RF channel release of an unestablished channel.\n"); |
| 529 | |
| 530 | int rc; |
| 531 | struct lapdm_polling_state test_state; |
| 532 | |
| 533 | /* Configure LAPDm on both sides */ |
| 534 | struct lapdm_channel bts_to_ms_channel; |
| 535 | memset(&bts_to_ms_channel, 0, sizeof(bts_to_ms_channel)); |
| 536 | |
| 537 | memset(&test_state, 0, sizeof(test_state)); |
| 538 | test_state.bts = &bts_to_ms_channel; |
| 539 | |
| 540 | /* BTS to MS in polling mode */ |
| 541 | lapdm_channel_init(&bts_to_ms_channel, LAPDM_MODE_BTS); |
| 542 | lapdm_channel_set_flags(&bts_to_ms_channel, LAPDM_ENT_F_POLLING_ONLY); |
| 543 | lapdm_channel_set_l1(&bts_to_ms_channel, NULL, &test_state); |
| 544 | lapdm_channel_set_l3(&bts_to_ms_channel, bts_to_ms_tx_cb, &test_state); |
| 545 | |
| 546 | /* Send the release request */ |
| 547 | rc = lapdm_rslms_recvmsg(create_rel_req(), &bts_to_ms_channel); |
| 548 | OSMO_ASSERT(rc == -EINVAL); |
| 549 | |
| 550 | /* clean up */ |
| 551 | lapdm_channel_exit(&bts_to_ms_channel); |
| 552 | |
| 553 | /* Check if exit is idempotent */ |
| 554 | lapdm_channel_exit(&bts_to_ms_channel); |
| 555 | } |
| 556 | |
| 557 | static void lapdm_establish(const uint8_t *est_req, size_t est_req_size) |
| 558 | { |
| 559 | int rc; |
| 560 | struct lapdm_polling_state test_state; |
| 561 | struct osmo_phsap_prim pp; |
| 562 | struct msgb *msg; |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 563 | |
| 564 | /* Configure LAPDm on both sides */ |
| 565 | struct lapdm_channel bts_to_ms_channel; |
| 566 | memset(&bts_to_ms_channel, 0, sizeof(bts_to_ms_channel)); |
| 567 | |
| 568 | memset(&test_state, 0, sizeof(test_state)); |
| 569 | test_state.bts = &bts_to_ms_channel; |
| 570 | |
| 571 | /* BTS to MS in polling mode */ |
| 572 | lapdm_channel_init(&bts_to_ms_channel, LAPDM_MODE_BTS); |
| 573 | lapdm_channel_set_flags(&bts_to_ms_channel, LAPDM_ENT_F_POLLING_ONLY); |
| 574 | lapdm_channel_set_l1(&bts_to_ms_channel, NULL, &test_state); |
| 575 | lapdm_channel_set_l3(&bts_to_ms_channel, bts_to_ms_tx_cb, &test_state); |
| 576 | |
Vadim Yanitskiy | d925243 | 2020-08-27 17:42:40 +0700 | [diff] [blame] | 577 | /* Send the establish request */ |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 578 | msg = create_est_req(est_req, est_req_size); |
| 579 | rc = lapdm_rslms_recvmsg(msg, &bts_to_ms_channel); |
Vadim Yanitskiy | 45a90cf | 2020-08-27 19:29:26 +0700 | [diff] [blame] | 580 | printf("lapdm_rslms_recvmsg(): got rc %d: %s\n", |
| 581 | rc, rc <= 0 ? strerror(-rc) : "???"); |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 582 | OSMO_ASSERT(rc == 0); |
| 583 | |
| 584 | /* Take message from queue */ |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 585 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
| 586 | if (rc < 0) |
| 587 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_acch, &pp, "ACCH"); |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 588 | |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 589 | CHECK_RC(rc); |
| 590 | |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 591 | OSMO_ASSERT(pp.oph.msg->data == msgb_l2(pp.oph.msg)); |
| 592 | |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 593 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 594 | OSMO_ASSERT(rc < 0); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 595 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_acch, &pp, "ACCH"); |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 596 | OSMO_ASSERT(rc < 0); |
| 597 | |
| 598 | /* clean up */ |
| 599 | lapdm_channel_exit(&bts_to_ms_channel); |
| 600 | |
| 601 | /* idempotent */ |
| 602 | lapdm_channel_exit(&bts_to_ms_channel); |
Neels Hofmeyr | dd24560 | 2017-11-16 16:25:08 +0100 | [diff] [blame] | 603 | msgb_free(msg); |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 604 | } |
| 605 | |
Harald Welte | e61d459 | 2022-11-03 11:05:58 +0100 | [diff] [blame] | 606 | static void test_lapdm_establishment(void) |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 607 | { |
| 608 | printf("I test RF channel establishment.\n"); |
| 609 | printf("Testing SAPI3/SDCCH\n"); |
| 610 | lapdm_establish(est_req_sdcch_sapi3, sizeof(est_req_sdcch_sapi3)); |
| 611 | printf("Testing SAPI3/SACCH\n"); |
| 612 | lapdm_establish(est_req_sacch_sapi3, sizeof(est_req_sacch_sapi3)); |
| 613 | } |
| 614 | |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 615 | |
| 616 | const uint8_t cm_chg[] = { |
| 617 | 0x01, 0x00, 0x49, 0x06, 0x16, 0x03, 0x33, |
| 618 | 0x59, 0xa6, 0x20, 0x0a, 0x20, 0x04, 0x04, |
| 619 | 0x2f, 0x65, 0x23, 0x02, 0x00, 0x24, 0x04 |
| 620 | }; |
| 621 | |
| 622 | const uint8_t cm_chg_ack[] = { |
| 623 | 0x01, 0x21, 0x01 |
| 624 | }; |
| 625 | |
| 626 | const uint8_t gprs_susp[] = { |
| 627 | 0x01, 0x02, 0x35, 0x06, 0x34, 0xe3, 0xd4, |
| 628 | 0xd2, 0x6f, 0x09, 0xf1, 0x07, 0x00, 0x01, 0x00, 0x02 |
| 629 | }; |
| 630 | |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 631 | const uint8_t cipher_cmd[] = { |
| 632 | 0x06, 0x35, 0x01 |
| 633 | }; |
| 634 | |
Daniel Willmann | 3dc4e16 | 2014-03-20 19:24:48 +0100 | [diff] [blame] | 635 | /* The cipher command we send to the MS after updating our N(R) */ |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 636 | const uint8_t cipher_cmd_out[] = { |
Daniel Willmann | 3dc4e16 | 2014-03-20 19:24:48 +0100 | [diff] [blame] | 637 | 0x03, 0x40, 0x0d, 0x06, 0x35, 0x01 |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 638 | }; |
| 639 | |
| 640 | uint8_t cipher_compl[] = { |
| 641 | 0x01, 0x24, 0x09, 0x06, 0x32 |
| 642 | }; |
| 643 | |
| 644 | uint8_t cipher_compl_ack[] = { |
| 645 | 0x01, 0x61, 0x01 |
| 646 | }; |
| 647 | |
| 648 | static const uint8_t ua_sms[] = { |
| 649 | 0x0d, 0x73, 0x01 |
| 650 | }; |
| 651 | |
| 652 | const uint8_t cp_data_1[] = { |
| 653 | 0x0d, 0x00, 0x53, 0x59, 0x01, 0x5c, 0x00, |
| 654 | 0x4c, 0x00, 0x06, 0x91, 0x86, 0x77, 0x07, |
| 655 | 0x00, 0xf9, 0x51, 0x11, 0x76, 0x05, 0x81, 0x29, 0x32 |
| 656 | }; |
| 657 | |
| 658 | const uint8_t cp_data_1_ack[] = { |
| 659 | 0x0d, 0x21, 0x01 |
| 660 | }; |
| 661 | |
| 662 | static int bts_to_ms_dummy_tx_cb(struct msgb *in_msg, struct lapdm_entity *le, void *_ctx) |
| 663 | { |
| 664 | printf("%s: MS->BTS(us) message %d\n", __func__, msgb_length(in_msg)); |
| 665 | msgb_free(in_msg); |
| 666 | |
| 667 | return 0; |
| 668 | } |
| 669 | |
| 670 | static void dump_queue(struct llist_head *head) |
| 671 | { |
| 672 | struct msgb* msg; |
| 673 | |
| 674 | printf("\nDumping queue:\n"); |
| 675 | llist_for_each_entry(msg, head, list) |
| 676 | printf("%s\n", msgb_hexdump(msg)); |
| 677 | printf("\n"); |
| 678 | } |
| 679 | |
Harald Welte | e61d459 | 2022-11-03 11:05:58 +0100 | [diff] [blame] | 680 | static void test_lapdm_desync(void) |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 681 | { |
| 682 | printf("I test if desync problems exist in LAPDm\n"); |
| 683 | |
| 684 | int rc; |
| 685 | struct osmo_phsap_prim pp; |
| 686 | |
| 687 | /* Configure LAPDm on both sides */ |
| 688 | struct lapdm_channel bts_to_ms_channel; |
| 689 | memset(&bts_to_ms_channel, 0, sizeof(bts_to_ms_channel)); |
| 690 | |
| 691 | /* BTS to MS in polling mode */ |
| 692 | lapdm_channel_init(&bts_to_ms_channel, LAPDM_MODE_BTS); |
| 693 | lapdm_channel_set_flags(&bts_to_ms_channel, LAPDM_ENT_F_POLLING_ONLY); |
| 694 | lapdm_channel_set_l1(&bts_to_ms_channel, NULL, NULL); |
| 695 | lapdm_channel_set_l3(&bts_to_ms_channel, bts_to_ms_dummy_tx_cb, NULL); |
| 696 | struct lapdm_datalink *dl = lapdm_datalink_for_sapi(&bts_to_ms_channel.lapdm_dcch, 0); |
| 697 | dl->mctx.dl = dl; |
| 698 | dl->dl.lctx.dl = &dl->dl; |
| 699 | |
| 700 | /* Send SABM MS 1, we must get UA */ |
| 701 | printf("\nEstablishing SAPI=0\n"); |
| 702 | send_sabm(&bts_to_ms_channel, 0, cm, sizeof(cm)); |
| 703 | |
| 704 | dump_queue(&dl->dl.tx_queue); |
| 705 | |
| 706 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
| 707 | CHECK_RC(rc); |
Vadim Yanitskiy | 9ff1c1a | 2020-08-27 18:29:46 +0700 | [diff] [blame] | 708 | OSMO_ASSERT(memcmp(pp.oph.msg->l2h, ua_cm, ARRAY_SIZE(ua_cm)) == 0); |
Neels Hofmeyr | dd24560 | 2017-11-16 16:25:08 +0100 | [diff] [blame] | 709 | msgb_free(pp.oph.msg); |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 710 | |
| 711 | printf("\nSending Classmark Change\n"); |
| 712 | send_buf(cm_chg, sizeof(cm_chg), &bts_to_ms_channel); |
| 713 | dump_queue(&dl->dl.tx_queue); |
| 714 | |
| 715 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
| 716 | CHECK_RC(rc); |
| 717 | OSMO_ASSERT(memcmp(pp.oph.msg->l2h, cm_chg_ack, ARRAY_SIZE(cm_chg_ack)) == 0); |
| 718 | |
| 719 | printf("\nEnqueueing Ciphering Mode Command\n"); |
| 720 | enqueue_buf(cipher_cmd, sizeof(cipher_cmd), 0, &bts_to_ms_channel); |
| 721 | dump_queue(&dl->dl.tx_queue); |
| 722 | |
| 723 | printf("\nSending GPRS Suspend Request\n"); |
| 724 | send_buf(gprs_susp, sizeof(gprs_susp), &bts_to_ms_channel); |
| 725 | dump_queue(&dl->dl.tx_queue); |
Neels Hofmeyr | dd24560 | 2017-11-16 16:25:08 +0100 | [diff] [blame] | 726 | msgb_free(pp.oph.msg); |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 727 | |
| 728 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
| 729 | CHECK_RC(rc); |
| 730 | OSMO_ASSERT(memcmp(pp.oph.msg->l2h, cipher_cmd_out, ARRAY_SIZE(cipher_cmd_out)) == 0); |
| 731 | |
| 732 | printf("\nSending Cipher Mode Complete\n"); |
| 733 | send_buf(cipher_compl, sizeof(cipher_compl), &bts_to_ms_channel); |
| 734 | dump_queue(&dl->dl.tx_queue); |
Neels Hofmeyr | dd24560 | 2017-11-16 16:25:08 +0100 | [diff] [blame] | 735 | msgb_free(pp.oph.msg); |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 736 | |
| 737 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
| 738 | CHECK_RC(rc); |
Daniel Willmann | 3dc4e16 | 2014-03-20 19:24:48 +0100 | [diff] [blame] | 739 | OSMO_ASSERT(memcmp(pp.oph.msg->l2h, cipher_compl_ack, ARRAY_SIZE(cipher_compl_ack)) == 0); |
Neels Hofmeyr | dd24560 | 2017-11-16 16:25:08 +0100 | [diff] [blame] | 740 | msgb_free(pp.oph.msg); |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 741 | |
| 742 | printf("\nEstablishing SAPI=3\n"); |
| 743 | send_sabm(&bts_to_ms_channel, 3, NULL, 0); |
| 744 | dump_queue(&dl->dl.tx_queue); |
| 745 | |
| 746 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
| 747 | CHECK_RC(rc); |
| 748 | OSMO_ASSERT(memcmp(pp.oph.msg->l2h, ua_sms, ARRAY_SIZE(ua_sms)) == 0); |
Neels Hofmeyr | dd24560 | 2017-11-16 16:25:08 +0100 | [diff] [blame] | 749 | msgb_free(pp.oph.msg); |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 750 | |
| 751 | printf("\nSending CP-DATA\n"); |
| 752 | send_buf(cp_data_1, sizeof(cp_data_1), &bts_to_ms_channel); |
| 753 | dump_queue(&dl->dl.tx_queue); |
| 754 | |
| 755 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
| 756 | CHECK_RC(rc); |
Daniel Willmann | 3dc4e16 | 2014-03-20 19:24:48 +0100 | [diff] [blame] | 757 | OSMO_ASSERT(memcmp(pp.oph.msg->l2h, cp_data_1_ack, ARRAY_SIZE(cp_data_1_ack)) == 0); |
Neels Hofmeyr | dd24560 | 2017-11-16 16:25:08 +0100 | [diff] [blame] | 758 | msgb_free(pp.oph.msg); |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 759 | |
| 760 | /* clean up */ |
| 761 | lapdm_channel_exit(&bts_to_ms_channel); |
| 762 | |
| 763 | /* Check if exit is idempotent */ |
| 764 | lapdm_channel_exit(&bts_to_ms_channel); |
| 765 | } |
| 766 | |
Vadim Yanitskiy | 488989d | 2020-08-27 19:35:02 +0700 | [diff] [blame] | 767 | static void test_lapdm_sapi_prio(void) |
| 768 | { |
| 769 | static const uint8_t dl_sabm[] = { 0x0f, 0x3f, 0x01 }; |
| 770 | struct osmo_phsap_prim pp1, pp2; |
| 771 | struct lapdm_channel lc = { }; |
| 772 | struct msgb *msg; |
| 773 | int rc; |
| 774 | |
| 775 | printf("\n=== I test SAPI0/SAPI3 prioritization ===\n\n"); |
| 776 | |
| 777 | /* BTS to MS in polling mode */ |
| 778 | lapdm_channel_init(&lc, LAPDM_MODE_BTS); |
| 779 | lapdm_channel_set_flags(&lc, LAPDM_ENT_F_POLLING_ONLY); |
| 780 | lapdm_channel_set_l1(&lc, NULL, NULL); |
| 781 | lapdm_channel_set_l3(&lc, bts_to_ms_dummy_tx_cb, NULL); |
| 782 | |
| 783 | /* MS establishes a SAPI=0 link by sending func=SABM on SDCCH */ |
| 784 | printf("MS is establishing a SAPI=0 link\n"); |
| 785 | send_sabm(&lc, 0, pr, sizeof(pr)); |
| 786 | |
| 787 | /* BTS establishes a SAPI=3 link by sending func=SABM on SDCCH */ |
| 788 | msg = create_est_req(est_req_sdcch_sapi3, sizeof(est_req_sdcch_sapi3)); |
| 789 | printf("BTS is establishing a SAPI=3 link\n"); |
| 790 | rc = lapdm_rslms_recvmsg(msg, &lc); |
| 791 | OSMO_ASSERT(rc == 0); |
| 792 | |
| 793 | /* Make sure that we get func=UA on SDCCH from the BTS first */ |
| 794 | rc = dequeue_prim(&lc.lapdm_dcch, &pp1, "DCCH"); |
| 795 | CHECK_RC(rc); |
| 796 | |
| 797 | /* Contention resolution is completed, we should get func=SABM now */ |
| 798 | rc = dequeue_prim(&lc.lapdm_dcch, &pp2, "DCCH"); |
| 799 | CHECK_RC(rc); |
| 800 | |
| 801 | /* Check the actual message payload */ |
| 802 | rc = memcmp(pp1.oph.msg->l2h, ua_pr, sizeof(ua_pr)); |
| 803 | printf("Checking the func=UA message: %s\n", rc == 0 ? "OK" : "FAIL"); |
| 804 | rc = memcmp(pp2.oph.msg->l2h, dl_sabm, sizeof(dl_sabm)); |
| 805 | printf("Checking the func=SABM message: %s\n", rc == 0 ? "OK" : "FAIL"); |
| 806 | |
| 807 | msgb_free(pp1.oph.msg); |
| 808 | msgb_free(pp2.oph.msg); |
| 809 | |
| 810 | /* Make sure that the queues are empty now */ |
| 811 | printf("\nChecking whether the DCCH/SACCH queues are empty\n"); |
| 812 | rc = dequeue_prim(&lc.lapdm_dcch, &pp1, "DCCH"); |
| 813 | OSMO_ASSERT(rc < 0); |
| 814 | rc = dequeue_prim(&lc.lapdm_dcch, &pp2, "SACCH"); |
| 815 | OSMO_ASSERT(rc < 0); |
| 816 | |
| 817 | /* Clean up */ |
| 818 | lapdm_channel_exit(&lc); |
| 819 | |
| 820 | /* Check if exit is idempotent */ |
| 821 | lapdm_channel_exit(&lc); |
| 822 | } |
| 823 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 824 | int main(int argc, char **argv) |
| 825 | { |
Neels Hofmeyr | a829b45 | 2018-04-05 03:02:35 +0200 | [diff] [blame] | 826 | void *ctx = talloc_named_const(NULL, 0, "lapd_test"); |
| 827 | osmo_init_logging2(ctx, &info); |
| 828 | |
| 829 | msgb_talloc_ctx_init(ctx, 0); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 830 | |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame] | 831 | /* Prevent the test from segfaulting */ |
| 832 | dummy_l1_header_len = 0; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 833 | test_lapdm_polling(); |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame] | 834 | |
| 835 | dummy_l1_header_len = 3; |
Daniel Willmann | e523392 | 2012-12-25 23:15:50 +0100 | [diff] [blame] | 836 | test_lapdm_early_release(); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 837 | test_lapdm_contention_resolution(); |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 838 | test_lapdm_establishment(); |
Daniel Willmann | 0912935 | 2014-03-20 18:54:57 +0100 | [diff] [blame] | 839 | test_lapdm_desync(); |
Vadim Yanitskiy | 488989d | 2020-08-27 19:35:02 +0700 | [diff] [blame] | 840 | test_lapdm_sapi_prio(); |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame] | 841 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 842 | printf("Success.\n"); |
| 843 | |
| 844 | return 0; |
| 845 | } |