Harald Welte | 511bd8e | 2011-11-25 08:58:40 +0100 | [diff] [blame] | 1 | /* GPRS BSSGP protocol implementation as per 3GPP TS 08.18 */ |
| 2 | |
Harald Welte | 8645e10 | 2012-06-16 16:09:52 +0800 | [diff] [blame] | 3 | /* (C) 2009-2012 by Harald Welte <laforge@gnumonks.org> |
Harald Welte | 511bd8e | 2011-11-25 08:58:40 +0100 | [diff] [blame] | 4 | * |
| 5 | * All Rights Reserved |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 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 |
| 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 |
| 15 | * GNU Affero General Public License for more details. |
| 16 | * |
| 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/>. |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #include <errno.h> |
| 23 | #include <stdint.h> |
| 24 | |
| 25 | #include <netinet/in.h> |
| 26 | |
| 27 | #include <osmocom/core/msgb.h> |
| 28 | #include <osmocom/core/rate_ctr.h> |
| 29 | #include <osmocom/gsm/tlv.h> |
| 30 | #include <osmocom/core/talloc.h> |
Harald Welte | ea34a4e | 2012-06-16 14:59:56 +0800 | [diff] [blame] | 31 | #include <osmocom/gprs/gprs_bssgp.h> |
| 32 | #include <osmocom/gprs/gprs_ns.h> |
Harald Welte | 511bd8e | 2011-11-25 08:58:40 +0100 | [diff] [blame] | 33 | |
Harald Welte | 68d85d5 | 2012-06-16 17:45:59 +0800 | [diff] [blame] | 34 | #include "common_vty.h" |
Harald Welte | 511bd8e | 2011-11-25 08:58:40 +0100 | [diff] [blame] | 35 | |
| 36 | uint8_t *bssgp_msgb_tlli_put(struct msgb *msg, uint32_t tlli) |
| 37 | { |
| 38 | uint32_t _tlli = htonl(tlli); |
| 39 | return msgb_tvlv_put(msg, BSSGP_IE_TLLI, 4, (uint8_t *) &_tlli); |
| 40 | } |
| 41 | |
| 42 | /*! \brief GMM-SUSPEND.req (Chapter 10.3.6) */ |
| 43 | int bssgp_tx_suspend(uint16_t nsei, uint32_t tlli, |
| 44 | const struct gprs_ra_id *ra_id) |
| 45 | { |
| 46 | struct msgb *msg = bssgp_msgb_alloc(); |
| 47 | struct bssgp_normal_hdr *bgph = |
| 48 | (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); |
| 49 | uint8_t ra[6]; |
| 50 | |
| 51 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP (BVCI=0) Tx SUSPEND (TLLI=0x%04x)\n", |
| 52 | tlli); |
| 53 | msgb_nsei(msg) = nsei; |
| 54 | msgb_bvci(msg) = 0; /* Signalling */ |
| 55 | bgph->pdu_type = BSSGP_PDUT_SUSPEND; |
| 56 | |
| 57 | bssgp_msgb_tlli_put(msg, tlli); |
| 58 | |
| 59 | gsm48_construct_ra(ra, ra_id); |
| 60 | msgb_tvlv_put(msg, BSSGP_IE_ROUTEING_AREA, 6, ra); |
| 61 | |
| 62 | return gprs_ns_sendmsg(bssgp_nsi, msg); |
| 63 | } |
| 64 | |
| 65 | /*! \brief GMM-RESUME.req (Chapter 10.3.9) */ |
| 66 | int bssgp_tx_resume(uint16_t nsei, uint32_t tlli, |
| 67 | const struct gprs_ra_id *ra_id, uint8_t suspend_ref) |
| 68 | { |
| 69 | struct msgb *msg = bssgp_msgb_alloc(); |
| 70 | struct bssgp_normal_hdr *bgph = |
| 71 | (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); |
| 72 | uint8_t ra[6]; |
| 73 | |
| 74 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP (BVCI=0) Tx RESUME (TLLI=0x%04x)\n", |
| 75 | tlli); |
| 76 | msgb_nsei(msg) = nsei; |
| 77 | msgb_bvci(msg) = 0; /* Signalling */ |
| 78 | bgph->pdu_type = BSSGP_PDUT_RESUME; |
| 79 | |
| 80 | bssgp_msgb_tlli_put(msg, tlli); |
| 81 | |
| 82 | gsm48_construct_ra(ra, ra_id); |
| 83 | msgb_tvlv_put(msg, BSSGP_IE_ROUTEING_AREA, 6, ra); |
| 84 | |
| 85 | msgb_tvlv_put(msg, BSSGP_IE_SUSPEND_REF_NR, 1, &suspend_ref); |
| 86 | |
| 87 | return gprs_ns_sendmsg(bssgp_nsi, msg); |
| 88 | } |
| 89 | |
| 90 | /*! \brief Transmit RA-CAPABILITY-UPDATE (10.3.3) */ |
| 91 | int bssgp_tx_ra_capa_upd(struct bssgp_bvc_ctx *bctx, uint32_t tlli, uint8_t tag) |
| 92 | { |
| 93 | struct msgb *msg = bssgp_msgb_alloc(); |
| 94 | struct bssgp_normal_hdr *bgph = |
| 95 | (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); |
| 96 | |
| 97 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP (BVCI=%u) Tx RA-CAPA-UPD (TLLI=0x%04x)\n", |
| 98 | bctx->bvci, tlli); |
| 99 | |
| 100 | /* set NSEI and BVCI in msgb cb */ |
| 101 | msgb_nsei(msg) = bctx->nsei; |
| 102 | msgb_bvci(msg) = bctx->bvci; |
| 103 | |
| 104 | bgph->pdu_type = BSSGP_PDUT_RA_CAPA_UDPATE; |
| 105 | bssgp_msgb_tlli_put(msg, tlli); |
| 106 | |
| 107 | msgb_tvlv_put(msg, BSSGP_IE_TAG, 1, &tag); |
| 108 | |
| 109 | return gprs_ns_sendmsg(bssgp_nsi, msg); |
| 110 | } |
| 111 | |
| 112 | /* first common part of RADIO-STATUS */ |
| 113 | static struct msgb *common_tx_radio_status(struct bssgp_bvc_ctx *bctx) |
| 114 | { |
| 115 | struct msgb *msg = bssgp_msgb_alloc(); |
| 116 | struct bssgp_normal_hdr *bgph = |
| 117 | (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); |
| 118 | |
| 119 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP (BVCI=%u) Tx RADIO-STATUS ", |
| 120 | bctx->bvci); |
| 121 | |
| 122 | /* set NSEI and BVCI in msgb cb */ |
| 123 | msgb_nsei(msg) = bctx->nsei; |
| 124 | msgb_bvci(msg) = bctx->bvci; |
| 125 | |
| 126 | bgph->pdu_type = BSSGP_PDUT_RADIO_STATUS; |
| 127 | |
| 128 | return msg; |
| 129 | } |
| 130 | |
| 131 | /* second common part of RADIO-STATUS */ |
| 132 | static int common_tx_radio_status2(struct msgb *msg, uint8_t cause) |
| 133 | { |
| 134 | msgb_tvlv_put(msg, BSSGP_IE_CAUSE, 1, &cause); |
| 135 | LOGPC(DBSSGP, LOGL_NOTICE, "CAUSE=%u\n", cause); |
| 136 | |
| 137 | return gprs_ns_sendmsg(bssgp_nsi, msg); |
| 138 | } |
| 139 | |
| 140 | /*! \brief Transmit RADIO-STATUS for TLLI (10.3.5) */ |
| 141 | int bssgp_tx_radio_status_tlli(struct bssgp_bvc_ctx *bctx, uint8_t cause, |
| 142 | uint32_t tlli) |
| 143 | { |
| 144 | struct msgb *msg = common_tx_radio_status(bctx); |
| 145 | |
| 146 | if (!msg) |
| 147 | return -ENOMEM; |
| 148 | bssgp_msgb_tlli_put(msg, tlli); |
| 149 | LOGPC(DBSSGP, LOGL_NOTICE, "TLLI=0x%08x ", tlli); |
| 150 | |
| 151 | return common_tx_radio_status2(msg, cause); |
| 152 | } |
| 153 | |
| 154 | /*! \brief Transmit RADIO-STATUS for TMSI (10.3.5) */ |
| 155 | int bssgp_tx_radio_status_tmsi(struct bssgp_bvc_ctx *bctx, uint8_t cause, |
| 156 | uint32_t tmsi) |
| 157 | { |
| 158 | struct msgb *msg = common_tx_radio_status(bctx); |
| 159 | uint32_t _tmsi = htonl(tmsi); |
| 160 | |
| 161 | if (!msg) |
| 162 | return -ENOMEM; |
| 163 | msgb_tvlv_put(msg, BSSGP_IE_TMSI, 4, (uint8_t *)&_tmsi); |
| 164 | LOGPC(DBSSGP, LOGL_NOTICE, "TMSI=0x%08x ", tmsi); |
| 165 | |
| 166 | return common_tx_radio_status2(msg, cause); |
| 167 | } |
| 168 | |
| 169 | /*! \brief Transmit RADIO-STATUS for IMSI (10.3.5) */ |
| 170 | int bssgp_tx_radio_status_imsi(struct bssgp_bvc_ctx *bctx, uint8_t cause, |
| 171 | const char *imsi) |
| 172 | { |
| 173 | struct msgb *msg = common_tx_radio_status(bctx); |
| 174 | uint8_t mi[10]; |
| 175 | int imsi_len = gsm48_generate_mid_from_imsi(mi, imsi); |
| 176 | |
| 177 | if (!msg) |
| 178 | return -ENOMEM; |
| 179 | |
| 180 | /* strip the MI type and length values (2 bytes) */ |
| 181 | if (imsi_len > 2) |
| 182 | msgb_tvlv_put(msg, BSSGP_IE_IMSI, imsi_len-2, mi+2); |
| 183 | LOGPC(DBSSGP, LOGL_NOTICE, "IMSI=%s ", imsi); |
| 184 | |
| 185 | return common_tx_radio_status2(msg, cause); |
| 186 | } |
| 187 | |
| 188 | /*! \brief Transmit FLUSH-LL-ACK (Chapter 10.4.2) */ |
| 189 | int bssgp_tx_flush_ll_ack(struct bssgp_bvc_ctx *bctx, uint32_t tlli, |
| 190 | uint8_t action, uint16_t bvci_new, |
| 191 | uint32_t num_octets) |
| 192 | { |
| 193 | struct msgb *msg = bssgp_msgb_alloc(); |
| 194 | struct bssgp_normal_hdr *bgph = |
| 195 | (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); |
| 196 | uint16_t _bvci_new = htons(bvci_new); |
| 197 | uint32_t _oct_aff = htonl(num_octets & 0xFFFFFF); |
| 198 | |
| 199 | msgb_nsei(msg) = bctx->nsei; |
| 200 | msgb_bvci(msg) = 0; /* Signalling */ |
| 201 | bgph->pdu_type = BSSGP_PDUT_FLUSH_LL_ACK; |
| 202 | |
| 203 | bssgp_msgb_tlli_put(msg, tlli); |
| 204 | msgb_tvlv_put(msg, BSSGP_IE_FLUSH_ACTION, 1, &action); |
| 205 | if (action == 1) /* transferred */ |
| 206 | msgb_tvlv_put(msg, BSSGP_IE_BVCI, 2, (uint8_t *) &_bvci_new); |
| 207 | msgb_tvlv_put(msg, BSSGP_IE_NUM_OCT_AFF, 3, (uint8_t *) &_oct_aff); |
| 208 | |
| 209 | return gprs_ns_sendmsg(bssgp_nsi, msg); |
| 210 | } |
| 211 | |
| 212 | /*! \brief Transmit LLC-DISCARDED (Chapter 10.4.3) */ |
| 213 | int bssgp_tx_llc_discarded(struct bssgp_bvc_ctx *bctx, uint32_t tlli, |
| 214 | uint8_t num_frames, uint32_t num_octets) |
| 215 | { |
| 216 | struct msgb *msg = bssgp_msgb_alloc(); |
| 217 | struct bssgp_normal_hdr *bgph = |
| 218 | (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); |
| 219 | uint16_t _bvci = htons(bctx->bvci); |
| 220 | uint32_t _oct_aff = htonl(num_octets & 0xFFFFFF); |
| 221 | |
| 222 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP (BVCI=%u) Tx LLC-DISCARDED " |
| 223 | "TLLI=0x%04x, FRAMES=%u, OCTETS=%u\n", bctx->bvci, tlli, |
| 224 | num_frames, num_octets); |
| 225 | msgb_nsei(msg) = bctx->nsei; |
| 226 | msgb_bvci(msg) = 0; /* Signalling */ |
| 227 | bgph->pdu_type = BSSGP_PDUT_LLC_DISCARD; |
| 228 | |
| 229 | bssgp_msgb_tlli_put(msg, tlli); |
| 230 | |
| 231 | msgb_tvlv_put(msg, BSSGP_IE_LLC_FRAMES_DISCARDED, 1, &num_frames); |
| 232 | msgb_tvlv_put(msg, BSSGP_IE_BVCI, 2, (uint8_t *) &_bvci); |
| 233 | msgb_tvlv_put(msg, BSSGP_IE_NUM_OCT_AFF, 3, (uint8_t *) &_oct_aff); |
| 234 | |
| 235 | return gprs_ns_sendmsg(bssgp_nsi, msg); |
| 236 | } |
| 237 | |
| 238 | /*! \brief Transmit a BVC-BLOCK message (Chapter 10.4.8) */ |
| 239 | int bssgp_tx_bvc_block(struct bssgp_bvc_ctx *bctx, uint8_t cause) |
| 240 | { |
| 241 | struct msgb *msg = bssgp_msgb_alloc(); |
| 242 | struct bssgp_normal_hdr *bgph = |
| 243 | (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); |
| 244 | uint16_t _bvci = htons(bctx->bvci); |
| 245 | |
| 246 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP (BVCI=%u) Tx BVC-BLOCK " |
| 247 | "CAUSE=%u\n", bctx->bvci, cause); |
| 248 | |
| 249 | msgb_nsei(msg) = bctx->nsei; |
| 250 | msgb_bvci(msg) = 0; /* Signalling */ |
| 251 | bgph->pdu_type = BSSGP_PDUT_BVC_BLOCK; |
| 252 | |
| 253 | msgb_tvlv_put(msg, BSSGP_IE_BVCI, 2, (uint8_t *) &_bvci); |
| 254 | msgb_tvlv_put(msg, BSSGP_IE_CAUSE, 1, &cause); |
| 255 | |
| 256 | return gprs_ns_sendmsg(bssgp_nsi, msg); |
| 257 | } |
| 258 | |
| 259 | /*! \brief Transmit a BVC-UNBLOCK message (Chapter 10.4.10) */ |
| 260 | int bssgp_tx_bvc_unblock(struct bssgp_bvc_ctx *bctx) |
| 261 | { |
| 262 | struct msgb *msg = bssgp_msgb_alloc(); |
| 263 | struct bssgp_normal_hdr *bgph = |
| 264 | (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); |
| 265 | uint16_t _bvci = htons(bctx->bvci); |
| 266 | |
| 267 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP (BVCI=%u) Tx BVC-BLOCK\n", bctx->bvci); |
| 268 | |
| 269 | msgb_nsei(msg) = bctx->nsei; |
| 270 | msgb_bvci(msg) = 0; /* Signalling */ |
| 271 | bgph->pdu_type = BSSGP_PDUT_BVC_UNBLOCK; |
| 272 | |
| 273 | msgb_tvlv_put(msg, BSSGP_IE_BVCI, 2, (uint8_t *) &_bvci); |
| 274 | |
| 275 | return gprs_ns_sendmsg(bssgp_nsi, msg); |
| 276 | } |
| 277 | |
| 278 | /*! \brief Transmit a BVC-RESET message (Chapter 10.4.12) */ |
| 279 | int bssgp_tx_bvc_reset(struct bssgp_bvc_ctx *bctx, uint16_t bvci, uint8_t cause) |
| 280 | { |
| 281 | struct msgb *msg = bssgp_msgb_alloc(); |
| 282 | struct bssgp_normal_hdr *bgph = |
| 283 | (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); |
| 284 | uint16_t _bvci = htons(bvci); |
| 285 | |
| 286 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP (BVCI=%u) Tx BVC-RESET " |
| 287 | "CAUSE=%u\n", bvci, cause); |
| 288 | |
| 289 | msgb_nsei(msg) = bctx->nsei; |
| 290 | msgb_bvci(msg) = 0; /* Signalling */ |
| 291 | bgph->pdu_type = BSSGP_PDUT_BVC_RESET; |
| 292 | |
| 293 | msgb_tvlv_put(msg, BSSGP_IE_BVCI, 2, (uint8_t *) &_bvci); |
| 294 | msgb_tvlv_put(msg, BSSGP_IE_CAUSE, 1, &cause); |
| 295 | if (bvci != BVCI_PTM) { |
| 296 | uint8_t bssgp_cid[8]; |
| 297 | bssgp_create_cell_id(bssgp_cid, &bctx->ra_id, bctx->cell_id); |
| 298 | msgb_tvlv_put(msg, BSSGP_IE_CELL_ID, sizeof(bssgp_cid), bssgp_cid); |
| 299 | } |
| 300 | /* Optional: Feature Bitmap */ |
| 301 | |
| 302 | return gprs_ns_sendmsg(bssgp_nsi, msg); |
| 303 | } |
| 304 | |
| 305 | |
| 306 | /*! \brief RL-UL-UNITDATA.req (Chapter 10.2.2) */ |
| 307 | int bssgp_tx_ul_ud(struct bssgp_bvc_ctx *bctx, uint32_t tlli, |
| 308 | const uint8_t *qos_profile, struct msgb *llc_pdu) |
| 309 | { |
| 310 | struct msgb *msg = llc_pdu; |
| 311 | uint8_t bssgp_cid[8]; |
| 312 | struct bssgp_ud_hdr *budh; |
| 313 | |
| 314 | /* FIXME: First push alignment octets, if rqd */ |
| 315 | |
| 316 | /* FIXME: Optional LSA Identifier List, PFI */ |
| 317 | |
| 318 | /* Cell Identifier */ |
| 319 | bssgp_create_cell_id(bssgp_cid, &bctx->ra_id, bctx->cell_id); |
| 320 | msgb_tvlv_push(msg, BSSGP_IE_CELL_ID, sizeof(bssgp_cid), bssgp_cid); |
| 321 | |
| 322 | /* User Data Header */ |
| 323 | budh = (struct bssgp_ud_hdr *) msgb_push(msg, sizeof(*budh)); |
| 324 | budh->tlli = htonl(tlli); |
| 325 | memcpy(budh->qos_profile, qos_profile, 3); |
| 326 | budh->pdu_type = BSSGP_PDUT_UL_UNITDATA; |
| 327 | |
| 328 | /* set NSEI and BVCI in msgb cb */ |
| 329 | msgb_nsei(msg) = bctx->nsei; |
| 330 | msgb_bvci(msg) = bctx->bvci; |
| 331 | |
| 332 | rate_ctr_inc(&bctx->ctrg->ctr[BSSGP_CTR_PKTS_OUT]); |
| 333 | rate_ctr_add(&bctx->ctrg->ctr[BSSGP_CTR_BYTES_OUT], msg->len); |
| 334 | |
| 335 | return gprs_ns_sendmsg(bssgp_nsi, msg); |
| 336 | } |
| 337 | |
| 338 | /* Parse a single GMM-PAGING.req to a given NSEI/NS-BVCI */ |
| 339 | int gprs_bssgp_rx_paging(struct bssgp_paging_info *pinfo, |
| 340 | struct msgb *msg) |
| 341 | { |
| 342 | struct bssgp_normal_hdr *bgph = |
| 343 | (struct bssgp_normal_hdr *) msgb_bssgph(msg); |
| 344 | struct tlv_parsed tp; |
| 345 | uint8_t ra[6]; |
| 346 | int rc, data_len; |
| 347 | |
| 348 | memset(ra, 0, sizeof(ra)); |
| 349 | |
| 350 | data_len = msgb_bssgp_len(msg) - sizeof(*bgph); |
| 351 | rc = bssgp_tlv_parse(&tp, bgph->data, data_len); |
| 352 | if (rc < 0) |
| 353 | goto err_mand_ie; |
| 354 | |
| 355 | switch (bgph->pdu_type) { |
| 356 | case BSSGP_PDUT_PAGING_PS: |
| 357 | pinfo->mode = BSSGP_PAGING_PS; |
| 358 | break; |
| 359 | case BSSGP_PDUT_PAGING_CS: |
| 360 | pinfo->mode = BSSGP_PAGING_CS; |
| 361 | break; |
| 362 | default: |
| 363 | return -EINVAL; |
| 364 | } |
| 365 | |
| 366 | /* IMSI */ |
| 367 | if (!TLVP_PRESENT(&tp, BSSGP_IE_IMSI)) |
| 368 | goto err_mand_ie; |
| 369 | if (!pinfo->imsi) |
| 370 | pinfo->imsi = talloc_zero_size(pinfo, 16); |
| 371 | gsm48_mi_to_string(pinfo->imsi, sizeof(pinfo->imsi), |
| 372 | TLVP_VAL(&tp, BSSGP_IE_IMSI), |
| 373 | TLVP_LEN(&tp, BSSGP_IE_IMSI)); |
| 374 | |
| 375 | /* DRX Parameters */ |
| 376 | if (!TLVP_PRESENT(&tp, BSSGP_IE_DRX_PARAMS)) |
| 377 | goto err_mand_ie; |
| 378 | pinfo->drx_params = ntohs(*(uint16_t *)TLVP_VAL(&tp, BSSGP_IE_DRX_PARAMS)); |
| 379 | |
| 380 | /* Scope */ |
| 381 | if (TLVP_PRESENT(&tp, BSSGP_IE_BSS_AREA_ID)) { |
| 382 | pinfo->scope = BSSGP_PAGING_BSS_AREA; |
| 383 | } else if (TLVP_PRESENT(&tp, BSSGP_IE_LOCATION_AREA)) { |
| 384 | pinfo->scope = BSSGP_PAGING_LOCATION_AREA; |
| 385 | memcpy(ra, TLVP_VAL(&tp, BSSGP_IE_LOCATION_AREA), |
| 386 | TLVP_LEN(&tp, BSSGP_IE_LOCATION_AREA)); |
| 387 | gsm48_parse_ra(&pinfo->raid, ra); |
| 388 | } else if (TLVP_PRESENT(&tp, BSSGP_IE_ROUTEING_AREA)) { |
| 389 | pinfo->scope = BSSGP_PAGING_ROUTEING_AREA; |
| 390 | memcpy(ra, TLVP_VAL(&tp, BSSGP_IE_ROUTEING_AREA), |
| 391 | TLVP_LEN(&tp, BSSGP_IE_ROUTEING_AREA)); |
| 392 | gsm48_parse_ra(&pinfo->raid, ra); |
| 393 | } else if (TLVP_PRESENT(&tp, BSSGP_IE_BVCI)) { |
| 394 | pinfo->scope = BSSGP_PAGING_BVCI; |
| 395 | pinfo->bvci = ntohs(*(uint16_t *)TLVP_VAL(&tp, BSSGP_IE_BVCI)); |
| 396 | } else |
| 397 | return -EINVAL; |
| 398 | |
| 399 | /* QoS profile mandatory for PS */ |
| 400 | if (pinfo->mode == BSSGP_PAGING_PS) { |
| 401 | if (!TLVP_PRESENT(&tp, BSSGP_IE_QOS_PROFILE)) |
| 402 | goto err_cond_ie; |
| 403 | if (TLVP_LEN(&tp, BSSGP_IE_QOS_PROFILE) < 3) |
| 404 | goto err; |
| 405 | |
| 406 | memcpy(&pinfo->qos, TLVP_VAL(&tp, BSSGP_IE_QOS_PROFILE), |
| 407 | 3); |
| 408 | } |
| 409 | |
| 410 | /* Optional (P-)TMSI */ |
| 411 | if (TLVP_PRESENT(&tp, BSSGP_IE_TMSI) && |
| 412 | TLVP_LEN(&tp, BSSGP_IE_TMSI) >= 4) |
| 413 | if (!pinfo->ptmsi) |
| 414 | pinfo->ptmsi = talloc_zero_size(pinfo, sizeof(uint32_t)); |
| 415 | *(pinfo->ptmsi) = ntohl(*(uint32_t *) |
| 416 | TLVP_VAL(&tp, BSSGP_IE_TMSI)); |
| 417 | |
| 418 | return 0; |
| 419 | |
| 420 | err_mand_ie: |
| 421 | err_cond_ie: |
| 422 | err: |
| 423 | /* FIXME */ |
| 424 | return 0; |
| 425 | } |