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 |
| 4 | * All Rights Reserved |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along |
| 17 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
| 20 | */ |
| 21 | |
Holger Hans Peter Freyther | af723a4 | 2012-12-26 10:51:00 +0100 | [diff] [blame] | 22 | #include <osmocom/core/application.h> |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 23 | #include <osmocom/core/logging.h> |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 24 | #include <osmocom/core/utils.h> |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 25 | #include <osmocom/gsm/lapdm.h> |
| 26 | #include <osmocom/gsm/rsl.h> |
| 27 | |
| 28 | #include <errno.h> |
| 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); |
| 53 | memcpy(msg->l3h, data, len); |
| 54 | return msg; |
| 55 | } |
| 56 | |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 57 | /* |
| 58 | * Test data is below... |
| 59 | */ |
| 60 | static const uint8_t cm[] = { |
| 61 | 0x05, 0x24, 0x31, 0x03, 0x50, 0x18, 0x93, 0x08, |
| 62 | 0x29, 0x47, 0x80, 0x00, 0x00, 0x00, 0x00, 0x80, |
| 63 | }; |
| 64 | |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 65 | static const uint8_t ua[] = { |
| 66 | 0x01, 0x73, 0x41, 0x05, 0x24, 0x31, 0x03, 0x50, |
| 67 | 0x18, 0x93, 0x08, 0x29, 0x47, 0x80, 0x00, 0x00, |
| 68 | 0x00, 0x00, 0x80, 0x2b, 0x2b, 0x2b, 0x2b |
| 69 | }; |
| 70 | |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 71 | static const uint8_t mm[] = { |
Holger Hans Peter Freyther | 3a5f08c | 2012-01-12 23:12:28 +0100 | [diff] [blame] | 72 | 0x00, 0x0c, 0x00, 0x03, 0x01, 0x01, 0x20, 0x02, |
| 73 | 0x00, 0x0b, 0x00, 0x03, 0x05, 0x04, 0x0d |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 74 | }; |
| 75 | |
| 76 | static const uint8_t dummy1[] = { |
| 77 | 0xab, 0x03, 0x30, 0x60, 0x06, |
| 78 | }; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 79 | |
Daniel Willmann | e523392 | 2012-12-25 23:15:50 +0100 | [diff] [blame] | 80 | static const uint8_t rel_req[] = { |
| 81 | 0x02, 0x07, 0x01, 0x0a, 0x02, 0x40, 0x14, 0x01 |
| 82 | }; |
| 83 | |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 84 | static const uint8_t est_req_sdcch_sapi3[] = { |
| 85 | 0x02, 0x04, 0x01, 0x20, 0x02, 0x03 |
| 86 | }; |
| 87 | |
| 88 | static const uint8_t est_req_sacch_sapi3[] = { |
| 89 | 0x02, 0x04, 0x01, 0x0b, 0x02, 0x43 |
| 90 | }; |
| 91 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 92 | static struct msgb *create_cm_serv_req(void) |
| 93 | { |
| 94 | struct msgb *msg; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 95 | |
| 96 | msg = msgb_from_array(cm, sizeof(cm)); |
| 97 | rsl_rll_push_l3(msg, RSL_MT_EST_REQ, 0, 0, 1); |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame^] | 98 | msgb_push(msg, dummy_l1_header_len); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 99 | return msg; |
| 100 | } |
| 101 | |
| 102 | static struct msgb *create_mm_id_req(void) |
| 103 | { |
| 104 | struct msgb *msg; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 105 | |
| 106 | msg = msgb_from_array(mm, sizeof(mm)); |
Holger Hans Peter Freyther | 3a5f08c | 2012-01-12 23:12:28 +0100 | [diff] [blame] | 107 | msg->l2h = msg->data + 3; |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 108 | OSMO_ASSERT(msgb_l2len(msg) == 12); |
Holger Hans Peter Freyther | 3a5f08c | 2012-01-12 23:12:28 +0100 | [diff] [blame] | 109 | msg->l3h = msg->l2h + 6; |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 110 | OSMO_ASSERT(msgb_l3len(msg) == 6); |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame^] | 111 | msgb_push(msg, dummy_l1_header_len); |
Holger Hans Peter Freyther | 3a5f08c | 2012-01-12 23:12:28 +0100 | [diff] [blame] | 112 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 113 | return msg; |
| 114 | } |
| 115 | |
Holger Hans Peter Freyther | 90656db | 2012-01-13 05:49:29 +0800 | [diff] [blame] | 116 | static struct msgb *create_empty_msg(void) |
| 117 | { |
| 118 | struct msgb *msg; |
| 119 | |
| 120 | msg = msgb_from_array(NULL, 0); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 121 | OSMO_ASSERT(msgb_l3len(msg) == 0); |
Holger Hans Peter Freyther | 90656db | 2012-01-13 05:49:29 +0800 | [diff] [blame] | 122 | rsl_rll_push_l3(msg, RSL_MT_DATA_REQ, 0, 0, 1); |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame^] | 123 | msgb_push(msg, dummy_l1_header_len); |
Holger Hans Peter Freyther | 90656db | 2012-01-13 05:49:29 +0800 | [diff] [blame] | 124 | return msg; |
| 125 | } |
| 126 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 127 | static struct msgb *create_dummy_data_req(void) |
| 128 | { |
| 129 | struct msgb *msg; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 130 | |
| 131 | msg = msgb_from_array(dummy1, sizeof(dummy1)); |
| 132 | rsl_rll_push_l3(msg, RSL_MT_DATA_REQ, 0, 0, 1); |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame^] | 133 | msgb_push(msg, dummy_l1_header_len); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 134 | return msg; |
| 135 | } |
| 136 | |
Daniel Willmann | e523392 | 2012-12-25 23:15:50 +0100 | [diff] [blame] | 137 | static struct msgb *create_rel_req(void) |
| 138 | { |
| 139 | struct msgb *msg; |
| 140 | |
| 141 | msg = msgb_from_array(rel_req, sizeof(rel_req)); |
| 142 | msg->l2h = msg->data; |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame^] | 143 | msgb_push(msg, dummy_l1_header_len); |
Daniel Willmann | e523392 | 2012-12-25 23:15:50 +0100 | [diff] [blame] | 144 | msg->l3h = msg->l2h + sizeof(struct abis_rsl_rll_hdr); |
| 145 | return msg; |
| 146 | } |
| 147 | |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 148 | static struct msgb *create_est_req(const uint8_t *est_req, size_t est_req_size) |
| 149 | { |
| 150 | struct msgb *msg; |
| 151 | |
| 152 | msg = msgb_from_array(est_req, est_req_size); |
| 153 | msg->l2h = msg->data; |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame^] | 154 | msgb_push(msg, dummy_l1_header_len); |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 155 | msg->l3h = msg->l2h + sizeof(struct abis_rsl_rll_hdr); |
| 156 | return msg; |
| 157 | } |
| 158 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 159 | static int send(struct msgb *in_msg, struct lapdm_channel *chan) |
| 160 | { |
| 161 | struct osmo_phsap_prim pp; |
| 162 | struct msgb *msg; |
| 163 | int rc; |
| 164 | |
| 165 | msg = msgb_alloc_headroom(128, 64, "PH-DATA.ind"); |
| 166 | osmo_prim_init(&pp.oph, SAP_GSM_PH, PRIM_PH_DATA, |
| 167 | PRIM_OP_INDICATION, msg); |
| 168 | /* copy over actual MAC block */ |
| 169 | msg->l2h = msgb_put(msg, msgb_l2len(in_msg)); |
| 170 | memcpy(msg->l2h, in_msg->l2h, msgb_l2len(in_msg)); |
| 171 | |
| 172 | /* LAPDm requires those... */ |
| 173 | pp.u.data.chan_nr = 0; |
| 174 | pp.u.data.link_id = 0; |
| 175 | /* feed into the LAPDm code of libosmogsm */ |
| 176 | rc = lapdm_phsap_up(&pp.oph, &chan->lapdm_dcch); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 177 | OSMO_ASSERT(rc == 0 || rc == -EBUSY); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 178 | return 0; |
| 179 | } |
| 180 | |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 181 | static int send_sabm(struct lapdm_channel *chan, int second_ms) |
| 182 | { |
| 183 | struct osmo_phsap_prim pp; |
| 184 | struct msgb *msg; |
| 185 | int rc; |
| 186 | |
| 187 | msg = msgb_alloc_headroom(128, 64, "PH-DATA.ind"); |
| 188 | osmo_prim_init(&pp.oph, SAP_GSM_PH, PRIM_PH_DATA, |
| 189 | PRIM_OP_INDICATION, msg); |
| 190 | /* copy over actual MAC block */ |
| 191 | msg->l2h = msgb_put(msg, 23); |
| 192 | msg->l2h[0] = 0x01; |
| 193 | msg->l2h[1] = 0x3f; |
| 194 | msg->l2h[2] = 0x01 | (sizeof(cm) << 2); |
Holger Hans Peter Freyther | dd34ed5 | 2013-06-19 08:16:56 +0200 | [diff] [blame] | 195 | memcpy(msg->l2h + 3, cm, sizeof(cm)); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 196 | msg->l2h[3] += second_ms; /* alter message, for second mobile */ |
| 197 | |
| 198 | /* LAPDm requires those... */ |
| 199 | pp.u.data.chan_nr = 0; |
| 200 | pp.u.data.link_id = 0; |
| 201 | /* feed into the LAPDm code of libosmogsm */ |
| 202 | rc = lapdm_phsap_up(&pp.oph, &chan->lapdm_dcch); |
| 203 | OSMO_ASSERT(rc == 0 || rc == -EBUSY); |
| 204 | return 0; |
| 205 | } |
| 206 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 207 | /* |
| 208 | * I get called from the LAPDm code when something was sent my way... |
| 209 | */ |
| 210 | static int bts_to_ms_tx_cb(struct msgb *in_msg, struct lapdm_entity *le, void *_ctx) |
| 211 | { |
| 212 | struct lapdm_polling_state *state = _ctx; |
| 213 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 214 | |
| 215 | 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] | 216 | |
| 217 | |
| 218 | if (state->bts_read == 0) { |
| 219 | printf("BTS: Verifying CM request.\n"); |
Holger Hans Peter Freyther | dd34ed5 | 2013-06-19 08:16:56 +0200 | [diff] [blame] | 220 | OSMO_ASSERT(msgb_l3len(in_msg) == ARRAY_SIZE(cm)); |
| 221 | OSMO_ASSERT(memcmp(in_msg->l3h, cm, |
| 222 | ARRAY_SIZE(cm)) == 0); |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 223 | } else if (state->bts_read == 1) { |
| 224 | printf("BTS: Verifying dummy message.\n"); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 225 | OSMO_ASSERT(msgb_l3len(in_msg) == ARRAY_SIZE(dummy1)); |
| 226 | OSMO_ASSERT(memcmp(in_msg->l3h, dummy1, |
| 227 | ARRAY_SIZE(dummy1)) == 0); |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 228 | } else { |
| 229 | printf("BTS: Do not know to verify: %d\n", state->bts_read); |
| 230 | } |
| 231 | |
| 232 | state->bts_read += 1; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 233 | msgb_free(in_msg); |
| 234 | |
| 235 | return 0; |
| 236 | } |
| 237 | |
| 238 | static int ms_to_bts_l1_cb(struct osmo_prim_hdr *oph, void *_ctx) |
| 239 | { |
| 240 | int rc; |
| 241 | struct lapdm_polling_state *state = _ctx; |
| 242 | printf("%s: MS(us) -> BTS prim message\n", __func__); |
| 243 | |
| 244 | /* i stuff it into the LAPDm channel of the BTS */ |
| 245 | rc = send(oph->msg, state->bts); |
| 246 | msgb_free(oph->msg); |
Holger Hans Peter Freyther | af723a4 | 2012-12-26 10:51:00 +0100 | [diff] [blame] | 247 | return rc; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 248 | } |
| 249 | |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 250 | static int dequeue_prim(struct lapdm_entity *le, struct osmo_phsap_prim *pp, |
| 251 | const char *queue_name) |
| 252 | { |
| 253 | int rc; |
| 254 | int l2_header_len; |
| 255 | int l3_len = 0; |
| 256 | |
| 257 | /* Take message from queue */ |
| 258 | rc = lapdm_phsap_dequeue_prim(le, pp); |
| 259 | |
| 260 | fprintf(stderr, "dequeue: got rc %d: %s\n", rc, |
| 261 | rc <= 0 ? strerror(-rc) : "-"); |
| 262 | |
| 263 | if (rc < 0) |
| 264 | return rc; |
| 265 | |
| 266 | l2_header_len = msgb_l2len(pp->oph.msg); |
| 267 | if (msgb_l3(pp->oph.msg)) { |
| 268 | l3_len = msgb_l3len(pp->oph.msg); |
| 269 | l2_header_len -= l3_len; |
| 270 | } else |
| 271 | fprintf(stderr, "MSGB: L3 is undefined\n"); |
| 272 | |
| 273 | if (l2_header_len < 0 || l2_header_len > pp->oph.msg->data_len) { |
| 274 | fprintf(stderr, |
| 275 | "MSGB inconsistent: data = %p, l2 = %p, l3 = %p, tail = %p\n", |
| 276 | pp->oph.msg->data, |
| 277 | pp->oph.msg->l2h, |
| 278 | pp->oph.msg->l3h, |
| 279 | pp->oph.msg->tail); |
| 280 | l2_header_len = -1; |
| 281 | } |
| 282 | |
| 283 | printf("Took message from %s queue: " |
| 284 | "L2 header size %d, L3 size %d, " |
| 285 | "SAP %#x, %d/%d, Link 0x%02x\n", |
| 286 | queue_name, |
| 287 | l2_header_len, l3_len, |
| 288 | pp->oph.sap, pp->oph.primitive, pp->oph.operation, |
| 289 | pp->u.data.link_id); |
| 290 | printf("Message: %s\n", msgb_hexdump(pp->oph.msg)); |
| 291 | |
| 292 | return rc; |
| 293 | } |
| 294 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 295 | static int ms_to_bts_tx_cb(struct msgb *msg, struct lapdm_entity *le, void *_ctx) |
| 296 | { |
| 297 | struct lapdm_polling_state *state = _ctx; |
| 298 | |
| 299 | printf("%s: BTS->MS(us) message %d\n", __func__, msgb_length(msg)); |
| 300 | |
| 301 | if (state->ms_read == 0) { |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 302 | struct abis_rsl_rll_hdr hdr; |
| 303 | |
| 304 | printf("MS: Verifying incoming primitive.\n"); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 305 | OSMO_ASSERT(msg->len == sizeof(struct abis_rsl_rll_hdr) + 3); |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 306 | |
| 307 | /* verify the header */ |
| 308 | memset(&hdr, 0, sizeof(hdr)); |
| 309 | rsl_init_rll_hdr(&hdr, RSL_MT_EST_CONF); |
| 310 | hdr.c.msg_discr |= ABIS_RSL_MDISC_TRANSP; |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 311 | OSMO_ASSERT(memcmp(msg->data, &hdr, sizeof(hdr)) == 0); |
Holger Hans Peter Freyther | 15f740c | 2011-12-12 00:29:50 +0100 | [diff] [blame] | 312 | |
| 313 | /* Verify the added RSL_IE_L3_INFO but we have a bug here */ |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 314 | OSMO_ASSERT(msg->data[6] == RSL_IE_L3_INFO); |
Holger Hans Peter Freyther | 4a075f8 | 2011-12-12 00:41:25 +0100 | [diff] [blame] | 315 | #warning "RSL_IE_L3_INFO 16 bit length is wrong" |
Holger Hans Peter Freyther | 3cc268c | 2013-06-19 08:30:59 +0200 | [diff] [blame] | 316 | /* This should be okay but it is actually 0x0, 0x9c on ia-32 */ |
| 317 | /* OSMO_ASSERT(msg->data[7] == 0x0 && msg->data[8] == 0x0); */ |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 318 | } else if (state->ms_read == 1) { |
Holger Hans Peter Freyther | 3a5f08c | 2012-01-12 23:12:28 +0100 | [diff] [blame] | 319 | printf("MS: Verifying incoming MM message: %d\n", msgb_l3len(msg)); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 320 | OSMO_ASSERT(msgb_l3len(msg) == 3); |
| 321 | 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] | 322 | } else { |
| 323 | 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] | 324 | } |
| 325 | |
| 326 | state->ms_read += 1; |
| 327 | msgb_free(msg); |
| 328 | return 0; |
| 329 | } |
| 330 | |
| 331 | static void test_lapdm_polling() |
| 332 | { |
| 333 | printf("I do some very simple LAPDm test.\n"); |
| 334 | |
| 335 | int rc; |
| 336 | struct lapdm_polling_state test_state; |
| 337 | struct osmo_phsap_prim pp; |
| 338 | |
| 339 | /* Configure LAPDm on both sides */ |
| 340 | struct lapdm_channel bts_to_ms_channel; |
| 341 | struct lapdm_channel ms_to_bts_channel; |
| 342 | memset(&bts_to_ms_channel, 0, sizeof(bts_to_ms_channel)); |
| 343 | memset(&ms_to_bts_channel, 0, sizeof(ms_to_bts_channel)); |
| 344 | |
| 345 | memset(&test_state, 0, sizeof(test_state)); |
| 346 | test_state.bts = &bts_to_ms_channel; |
| 347 | test_state.ms = &ms_to_bts_channel; |
| 348 | |
| 349 | /* BTS to MS in polling mode */ |
| 350 | lapdm_channel_init(&bts_to_ms_channel, LAPDM_MODE_BTS); |
| 351 | lapdm_channel_set_flags(&bts_to_ms_channel, LAPDM_ENT_F_POLLING_ONLY); |
| 352 | lapdm_channel_set_l1(&bts_to_ms_channel, NULL, &test_state); |
| 353 | lapdm_channel_set_l3(&bts_to_ms_channel, bts_to_ms_tx_cb, &test_state); |
| 354 | |
| 355 | /* MS to BTS in direct mode */ |
| 356 | lapdm_channel_init(&ms_to_bts_channel, LAPDM_MODE_MS); |
| 357 | lapdm_channel_set_l1(&ms_to_bts_channel, ms_to_bts_l1_cb, &test_state); |
| 358 | lapdm_channel_set_l3(&ms_to_bts_channel, ms_to_bts_tx_cb, &test_state); |
| 359 | |
| 360 | /* |
| 361 | * We try to send messages from the MS to the BTS to the MS.. |
| 362 | */ |
| 363 | /* 1. Start with MS -> BTS, BTS should have a pending message */ |
| 364 | printf("Establishing link.\n"); |
| 365 | lapdm_rslms_recvmsg(create_cm_serv_req(), &ms_to_bts_channel); |
| 366 | |
| 367 | /* 2. Poll on the BTS for sending out a confirmation */ |
| 368 | printf("\nConfirming\n"); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 369 | OSMO_ASSERT(test_state.bts_read == 1); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 370 | 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] | 371 | CHECK_RC(rc); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 372 | OSMO_ASSERT(pp.oph.msg->data == pp.oph.msg->l2h); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 373 | send(pp.oph.msg, &ms_to_bts_channel); |
| 374 | msgb_free(pp.oph.msg); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 375 | OSMO_ASSERT(test_state.ms_read == 1); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 376 | |
| 377 | /* 3. Send some data to the MS */ |
| 378 | printf("\nSending back to MS\n"); |
| 379 | lapdm_rslms_recvmsg(create_mm_id_req(), &bts_to_ms_channel); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 380 | 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] | 381 | CHECK_RC(rc); |
| 382 | send(pp.oph.msg, &ms_to_bts_channel); |
| 383 | msgb_free(pp.oph.msg); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 384 | OSMO_ASSERT(test_state.ms_read == 2); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 385 | |
| 386 | /* verify that there is nothing more to poll */ |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 387 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 388 | OSMO_ASSERT(rc < 0); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 389 | |
| 390 | /* 3. And back to the BTS */ |
| 391 | printf("\nSending back to BTS\n"); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 392 | OSMO_ASSERT(test_state.ms_read == 2); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 393 | lapdm_rslms_recvmsg(create_dummy_data_req(), &ms_to_bts_channel); |
| 394 | |
| 395 | |
Holger Hans Peter Freyther | 3a5f08c | 2012-01-12 23:12:28 +0100 | [diff] [blame] | 396 | /* 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] | 397 | OSMO_ASSERT(test_state.bts_read == 2); |
| 398 | OSMO_ASSERT(test_state.ms_read == 2); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 399 | 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] | 400 | CHECK_RC(rc); |
| 401 | send(pp.oph.msg, &ms_to_bts_channel); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 402 | OSMO_ASSERT(test_state.ms_read == 2); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 403 | msgb_free(pp.oph.msg); |
| 404 | |
| 405 | /* verify that there is nothing more to poll */ |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 406 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 407 | OSMO_ASSERT(rc < 0); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 408 | |
Holger Hans Peter Freyther | 90656db | 2012-01-13 05:49:29 +0800 | [diff] [blame] | 409 | /* check sending an empty L3 message fails */ |
| 410 | rc = lapdm_rslms_recvmsg(create_empty_msg(), &bts_to_ms_channel); |
Katerina Barone-Adesi | 008e53b | 2013-03-03 10:36:52 +0000 | [diff] [blame] | 411 | OSMO_ASSERT(rc == -1); |
| 412 | OSMO_ASSERT(test_state.ms_read == 2); |
Holger Hans Peter Freyther | 90656db | 2012-01-13 05:49:29 +0800 | [diff] [blame] | 413 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 414 | /* clean up */ |
| 415 | lapdm_channel_exit(&bts_to_ms_channel); |
| 416 | lapdm_channel_exit(&ms_to_bts_channel); |
Holger Hans Peter Freyther | ce397de | 2013-10-26 13:35:15 +0200 | [diff] [blame] | 417 | |
| 418 | /* Check if exit is idempotent */ |
| 419 | lapdm_channel_exit(&bts_to_ms_channel); |
| 420 | lapdm_channel_exit(&ms_to_bts_channel); |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 421 | } |
| 422 | |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 423 | static void test_lapdm_contention_resolution() |
| 424 | { |
| 425 | printf("I test contention resultion by having two mobiles collide and " |
| 426 | "first mobile repeating SABM.\n"); |
| 427 | |
| 428 | int rc; |
| 429 | struct lapdm_polling_state test_state; |
| 430 | struct osmo_phsap_prim pp; |
| 431 | |
| 432 | /* Configure LAPDm on both sides */ |
| 433 | struct lapdm_channel bts_to_ms_channel; |
| 434 | memset(&bts_to_ms_channel, 0, sizeof(bts_to_ms_channel)); |
| 435 | |
| 436 | memset(&test_state, 0, sizeof(test_state)); |
| 437 | test_state.bts = &bts_to_ms_channel; |
| 438 | |
| 439 | /* BTS to MS in polling mode */ |
| 440 | lapdm_channel_init(&bts_to_ms_channel, LAPDM_MODE_BTS); |
| 441 | lapdm_channel_set_flags(&bts_to_ms_channel, LAPDM_ENT_F_POLLING_ONLY); |
| 442 | lapdm_channel_set_l1(&bts_to_ms_channel, NULL, &test_state); |
| 443 | lapdm_channel_set_l3(&bts_to_ms_channel, bts_to_ms_tx_cb, &test_state); |
| 444 | |
| 445 | /* Send SABM MS 1, we must get UA */ |
| 446 | send_sabm(&bts_to_ms_channel, 0); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 447 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 448 | CHECK_RC(rc); |
| 449 | OSMO_ASSERT(memcmp(pp.oph.msg->l2h, ua, ARRAY_SIZE(ua)) == 0); |
| 450 | |
| 451 | /* Send SABM MS 2, we must get nothing, due to collision */ |
| 452 | send_sabm(&bts_to_ms_channel, 1); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 453 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 454 | OSMO_ASSERT(rc == -ENODEV); |
| 455 | |
| 456 | /* Send SABM MS 1 again, we must get UA gain */ |
| 457 | send_sabm(&bts_to_ms_channel, 0); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 458 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 459 | CHECK_RC(rc); |
| 460 | OSMO_ASSERT(memcmp(pp.oph.msg->l2h, ua, ARRAY_SIZE(ua)) == 0); |
| 461 | |
| 462 | /* clean up */ |
| 463 | lapdm_channel_exit(&bts_to_ms_channel); |
Holger Hans Peter Freyther | ce397de | 2013-10-26 13:35:15 +0200 | [diff] [blame] | 464 | |
| 465 | /* idempotent */ |
| 466 | lapdm_channel_exit(&bts_to_ms_channel); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 467 | } |
| 468 | |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 469 | static void test_lapdm_early_release() |
| 470 | { |
| 471 | printf("I test RF channel release of an unestablished channel.\n"); |
| 472 | |
| 473 | int rc; |
| 474 | struct lapdm_polling_state test_state; |
| 475 | |
| 476 | /* Configure LAPDm on both sides */ |
| 477 | struct lapdm_channel bts_to_ms_channel; |
| 478 | memset(&bts_to_ms_channel, 0, sizeof(bts_to_ms_channel)); |
| 479 | |
| 480 | memset(&test_state, 0, sizeof(test_state)); |
| 481 | test_state.bts = &bts_to_ms_channel; |
| 482 | |
| 483 | /* BTS to MS in polling mode */ |
| 484 | lapdm_channel_init(&bts_to_ms_channel, LAPDM_MODE_BTS); |
| 485 | lapdm_channel_set_flags(&bts_to_ms_channel, LAPDM_ENT_F_POLLING_ONLY); |
| 486 | lapdm_channel_set_l1(&bts_to_ms_channel, NULL, &test_state); |
| 487 | lapdm_channel_set_l3(&bts_to_ms_channel, bts_to_ms_tx_cb, &test_state); |
| 488 | |
| 489 | /* Send the release request */ |
| 490 | rc = lapdm_rslms_recvmsg(create_rel_req(), &bts_to_ms_channel); |
| 491 | OSMO_ASSERT(rc == -EINVAL); |
| 492 | |
| 493 | /* clean up */ |
| 494 | lapdm_channel_exit(&bts_to_ms_channel); |
| 495 | |
| 496 | /* Check if exit is idempotent */ |
| 497 | lapdm_channel_exit(&bts_to_ms_channel); |
| 498 | } |
| 499 | |
| 500 | static void lapdm_establish(const uint8_t *est_req, size_t est_req_size) |
| 501 | { |
| 502 | int rc; |
| 503 | struct lapdm_polling_state test_state; |
| 504 | struct osmo_phsap_prim pp; |
| 505 | struct msgb *msg; |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 506 | |
| 507 | /* Configure LAPDm on both sides */ |
| 508 | struct lapdm_channel bts_to_ms_channel; |
| 509 | memset(&bts_to_ms_channel, 0, sizeof(bts_to_ms_channel)); |
| 510 | |
| 511 | memset(&test_state, 0, sizeof(test_state)); |
| 512 | test_state.bts = &bts_to_ms_channel; |
| 513 | |
| 514 | /* BTS to MS in polling mode */ |
| 515 | lapdm_channel_init(&bts_to_ms_channel, LAPDM_MODE_BTS); |
| 516 | lapdm_channel_set_flags(&bts_to_ms_channel, LAPDM_ENT_F_POLLING_ONLY); |
| 517 | lapdm_channel_set_l1(&bts_to_ms_channel, NULL, &test_state); |
| 518 | lapdm_channel_set_l3(&bts_to_ms_channel, bts_to_ms_tx_cb, &test_state); |
| 519 | |
| 520 | /* Send the release request */ |
| 521 | msg = create_est_req(est_req, est_req_size); |
| 522 | rc = lapdm_rslms_recvmsg(msg, &bts_to_ms_channel); |
| 523 | fprintf(stderr, "recvmsg: got rc %d: %s\n", rc, rc <= 0 ? strerror(-rc) : "???"); |
| 524 | OSMO_ASSERT(rc == 0); |
| 525 | |
| 526 | /* Take message from queue */ |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 527 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
| 528 | if (rc < 0) |
| 529 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_acch, &pp, "ACCH"); |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 530 | |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 531 | CHECK_RC(rc); |
| 532 | |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 533 | OSMO_ASSERT(pp.oph.msg->data == msgb_l2(pp.oph.msg)); |
| 534 | |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 535 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_dcch, &pp, "DCCH"); |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 536 | OSMO_ASSERT(rc < 0); |
Jacob Erlbeck | 2462cf6 | 2014-02-25 10:49:00 +0100 | [diff] [blame] | 537 | rc = dequeue_prim(&bts_to_ms_channel.lapdm_acch, &pp, "ACCH"); |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 538 | OSMO_ASSERT(rc < 0); |
| 539 | |
| 540 | /* clean up */ |
| 541 | lapdm_channel_exit(&bts_to_ms_channel); |
| 542 | |
| 543 | /* idempotent */ |
| 544 | lapdm_channel_exit(&bts_to_ms_channel); |
| 545 | } |
| 546 | |
| 547 | static void test_lapdm_establishment() |
| 548 | { |
| 549 | printf("I test RF channel establishment.\n"); |
| 550 | printf("Testing SAPI3/SDCCH\n"); |
| 551 | lapdm_establish(est_req_sdcch_sapi3, sizeof(est_req_sdcch_sapi3)); |
| 552 | printf("Testing SAPI3/SACCH\n"); |
| 553 | lapdm_establish(est_req_sacch_sapi3, sizeof(est_req_sacch_sapi3)); |
| 554 | } |
| 555 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 556 | int main(int argc, char **argv) |
| 557 | { |
| 558 | osmo_init_logging(&info); |
| 559 | |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame^] | 560 | /* Prevent the test from segfaulting */ |
| 561 | dummy_l1_header_len = 0; |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 562 | test_lapdm_polling(); |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame^] | 563 | |
| 564 | dummy_l1_header_len = 3; |
Daniel Willmann | e523392 | 2012-12-25 23:15:50 +0100 | [diff] [blame] | 565 | test_lapdm_early_release(); |
Andreas Eversberg | 6e18208 | 2013-02-06 14:13:21 +0100 | [diff] [blame] | 566 | test_lapdm_contention_resolution(); |
Jacob Erlbeck | 90937fe | 2014-01-24 13:48:19 +0100 | [diff] [blame] | 567 | test_lapdm_establishment(); |
Jacob Erlbeck | c893c22 | 2014-01-28 10:53:59 +0100 | [diff] [blame^] | 568 | |
Holger Hans Peter Freyther | 72bd4eb | 2011-12-11 20:25:12 +0100 | [diff] [blame] | 569 | printf("Success.\n"); |
| 570 | |
| 571 | return 0; |
| 572 | } |