| /* pcu_l1_if.cpp |
| * |
| * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <inttypes.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <assert.h> |
| #include <sys/socket.h> |
| #include <sys/un.h> |
| #include <arpa/inet.h> |
| #include <ctype.h> |
| |
| extern "C" { |
| #include <osmocom/core/talloc.h> |
| #include <osmocom/core/select.h> |
| #include <osmocom/core/msgb.h> |
| #include <osmocom/core/gsmtap_util.h> |
| #include <osmocom/core/gsmtap.h> |
| #include <osmocom/core/bitvec.h> |
| #include <osmocom/core/logging.h> |
| #include <osmocom/core/utils.h> |
| #include <osmocom/gsm/l1sap.h> |
| #include <osmocom/gsm/protocol/gsm_04_08.h> |
| } |
| |
| #include <gprs_rlcmac.h> |
| #include <pcu_l1_if.h> |
| #include <gprs_debug.h> |
| #include <gprs_bssgp_pcu.h> |
| #include <osmocom/pcu/pcuif_proto.h> |
| #include <bts.h> |
| #include <pdch.h> |
| |
| // FIXME: move this, when changed from c++ to c. |
| extern "C" { |
| void *l1if_open_pdch(uint8_t trx_no, uint32_t hlayer1, |
| struct gsmtap_inst *gsmtap); |
| int l1if_connect_pdch(void *obj, uint8_t ts); |
| int l1if_pdch_req(void *obj, uint8_t ts, int is_ptcch, uint32_t fn, |
| uint16_t arfcn, uint8_t block_nr, uint8_t *data, uint8_t len); |
| } |
| |
| extern void *tall_pcu_ctx; |
| |
| #define PAGING_GROUP_LEN 3 |
| |
| /* returns [0,999] on success, > 999 on error */ |
| uint16_t imsi2paging_group(const char* imsi) |
| { |
| uint16_t pgroup = 0; |
| size_t len; |
| |
| len = (imsi != NULL) ? strlen(imsi) : 0; |
| if (len < PAGING_GROUP_LEN) |
| return 0xFFFF; |
| imsi += len - PAGING_GROUP_LEN; |
| |
| while (*imsi != '\0') { |
| if (!isdigit(*imsi)) |
| return 0xFFFF; |
| pgroup *= 10; |
| pgroup += *imsi - '0'; |
| imsi++; |
| } |
| return pgroup; |
| } |
| |
| /* |
| * PCU messages |
| */ |
| |
| struct msgb *pcu_msgb_alloc(uint8_t msg_type, uint8_t bts_nr) |
| { |
| struct msgb *msg; |
| struct gsm_pcu_if *pcu_prim; |
| |
| msg = msgb_alloc(sizeof(struct gsm_pcu_if), "pcu_sock_tx"); |
| if (!msg) |
| return NULL; |
| msgb_put(msg, sizeof(struct gsm_pcu_if)); |
| pcu_prim = (struct gsm_pcu_if *) msg->data; |
| pcu_prim->msg_type = msg_type; |
| pcu_prim->bts_nr = bts_nr; |
| |
| return msg; |
| } |
| |
| const struct value_string gsm_pcu_if_text_type_names[] = { |
| OSMO_VALUE_STRING(PCU_VERSION), |
| OSMO_VALUE_STRING(PCU_OML_ALERT), |
| { 0, NULL } |
| }; |
| |
| int pcu_tx_txt_ind(enum gsm_pcu_if_text_type t, const char *fmt, ...) |
| { |
| struct gsm_pcu_if *pcu_prim; |
| struct gsm_pcu_if_txt_ind *txt; |
| va_list ap; |
| char *rep; |
| struct msgb *msg = pcu_msgb_alloc(PCU_IF_MSG_TXT_IND, 0); |
| if (!msg) |
| return -ENOMEM; |
| |
| pcu_prim = (struct gsm_pcu_if *) msg->data; |
| txt = &pcu_prim->u.txt_ind; |
| txt->type = t; |
| |
| va_start(ap, fmt); |
| rep = talloc_vasprintf(tall_pcu_ctx, fmt, ap); |
| va_end(ap); |
| |
| if (!rep) |
| return -ENOMEM; |
| |
| osmo_strlcpy(txt->text, rep, TXT_MAX_LEN); |
| talloc_free(rep); |
| |
| LOGP(DL1IF, LOGL_INFO, "Sending %s TXT as %s to BTS\n", txt->text, |
| get_value_string(gsm_pcu_if_text_type_names, t)); |
| |
| return pcu_sock_send(msg); |
| } |
| |
| static int pcu_tx_act_req(uint8_t trx, uint8_t ts, uint8_t activate) |
| { |
| struct msgb *msg; |
| struct gsm_pcu_if *pcu_prim; |
| struct gsm_pcu_if_act_req *act_req; |
| |
| LOGP(DL1IF, LOGL_INFO, "Sending %s request: trx=%d ts=%d\n", |
| (activate) ? "activate" : "deactivate", trx, ts); |
| |
| msg = pcu_msgb_alloc(PCU_IF_MSG_ACT_REQ, 0); |
| if (!msg) |
| return -ENOMEM; |
| pcu_prim = (struct gsm_pcu_if *) msg->data; |
| act_req = &pcu_prim->u.act_req; |
| act_req->activate = activate; |
| act_req->trx_nr = trx; |
| act_req->ts_nr = ts; |
| |
| return pcu_sock_send(msg); |
| } |
| |
| static int pcu_tx_data_req(uint8_t trx, uint8_t ts, uint8_t sapi, |
| uint16_t arfcn, uint32_t fn, uint8_t block_nr, uint8_t *data, |
| uint8_t len) |
| { |
| struct msgb *msg; |
| struct gsm_pcu_if *pcu_prim; |
| struct gsm_pcu_if_data *data_req; |
| int current_fn = get_current_fn(); |
| |
| LOGP(DL1IF, LOGL_DEBUG, "Sending data request: trx=%d ts=%d sapi=%d " |
| "arfcn=%d fn=%d cur_fn=%d block=%d data=%s\n", trx, ts, sapi, arfcn, fn, current_fn, |
| block_nr, osmo_hexdump(data, len)); |
| |
| msg = pcu_msgb_alloc(PCU_IF_MSG_DATA_REQ, 0); |
| if (!msg) |
| return -ENOMEM; |
| pcu_prim = (struct gsm_pcu_if *) msg->data; |
| data_req = &pcu_prim->u.data_req; |
| |
| data_req->sapi = sapi; |
| data_req->fn = fn; |
| data_req->arfcn = arfcn; |
| data_req->trx_nr = trx; |
| data_req->ts_nr = ts; |
| data_req->block_nr = block_nr; |
| memcpy(data_req->data, data, len); |
| data_req->len = len; |
| |
| return pcu_sock_send(msg); |
| } |
| |
| void pcu_l1if_tx_pdtch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn, |
| uint32_t fn, uint8_t block_nr) |
| { |
| #ifdef ENABLE_DIRECT_PHY |
| struct gprs_rlcmac_bts *bts = bts_main_data(); |
| |
| if (bts->trx[trx].fl1h) { |
| l1if_pdch_req(bts->trx[trx].fl1h, ts, 0, fn, arfcn, block_nr, |
| msg->data, msg->len); |
| msgb_free(msg); |
| return; |
| } |
| #endif |
| pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PDTCH, arfcn, fn, block_nr, |
| msg->data, msg->len); |
| msgb_free(msg); |
| } |
| |
| void pcu_l1if_tx_ptcch(uint8_t trx, uint8_t ts, uint16_t arfcn, |
| uint32_t fn, uint8_t block_nr, |
| uint8_t *data, size_t data_len) |
| { |
| struct gprs_rlcmac_bts *bts = bts_main_data(); |
| |
| if (bts->gsmtap_categ_mask & (1 << PCU_GSMTAP_C_DL_PTCCH)) |
| gsmtap_send(bts->gsmtap, arfcn, ts, GSMTAP_CHANNEL_PTCCH, 0, fn, 0, 0, data, data_len); |
| #ifdef ENABLE_DIRECT_PHY |
| if (bts->trx[trx].fl1h) { |
| l1if_pdch_req(bts->trx[trx].fl1h, ts, 1, fn, arfcn, block_nr, data, data_len); |
| return; |
| } |
| #endif |
| pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PTCCH, arfcn, fn, block_nr, data, data_len); |
| } |
| |
| void pcu_l1if_tx_agch(bitvec * block, int plen) |
| { |
| struct gprs_rlcmac_bts *bts = bts_main_data(); |
| uint8_t data[GSM_MACBLOCK_LEN]; /* prefix PLEN */ |
| |
| /* FIXME: why does OpenBTS has no PLEN and no fill in message? */ |
| bitvec_pack(block, data + 1); |
| data[0] = (plen << 2) | 0x01; |
| |
| if (bts->gsmtap_categ_mask & (1 << PCU_GSMTAP_C_DL_AGCH)) |
| gsmtap_send(bts->gsmtap, 0, 0, GSMTAP_CHANNEL_AGCH, 0, 0, 0, 0, data, GSM_MACBLOCK_LEN); |
| |
| pcu_tx_data_req(0, 0, PCU_IF_SAPI_AGCH, 0, 0, 0, data, GSM_MACBLOCK_LEN); |
| } |
| |
| void pcu_l1if_tx_pch(bitvec * block, int plen, uint16_t pgroup) |
| { |
| struct gprs_rlcmac_bts *bts = bts_main_data(); |
| uint8_t data[PAGING_GROUP_LEN + GSM_MACBLOCK_LEN]; |
| int i; |
| |
| /* prepend paging group */ |
| for (i = 0; i < PAGING_GROUP_LEN; i++) { |
| data[PAGING_GROUP_LEN - 1 - i] = '0' + (char)(pgroup % 10); |
| pgroup = pgroup / 10; |
| } |
| OSMO_ASSERT(pgroup == 0); |
| |
| /* block provided by upper layer comes without first byte (plen), |
| * prepend it manually: |
| */ |
| OSMO_ASSERT(sizeof(data) >= PAGING_GROUP_LEN + 1 + block->data_len); |
| data[3] = (plen << 2) | 0x01; |
| bitvec_pack(block, data + PAGING_GROUP_LEN + 1); |
| |
| if (bts->gsmtap_categ_mask & (1 << PCU_GSMTAP_C_DL_PCH)) |
| gsmtap_send(bts->gsmtap, 0, 0, GSMTAP_CHANNEL_PCH, 0, 0, 0, 0, data + 3, GSM_MACBLOCK_LEN); |
| |
| pcu_tx_data_req(0, 0, PCU_IF_SAPI_PCH, 0, 0, 0, data, PAGING_GROUP_LEN + GSM_MACBLOCK_LEN); |
| } |
| |
| extern "C" void pcu_rx_block_time(uint16_t arfcn, uint32_t fn, uint8_t ts_no) |
| { |
| BTS::main_bts()->set_current_block_frame_number(fn, 0); |
| } |
| |
| extern "C" void pcu_rx_ra_time(uint16_t arfcn, uint32_t fn, uint8_t ts_no) |
| { |
| /* access bursts may arrive some bursts earlier */ |
| BTS::main_bts()->set_current_block_frame_number(fn, 5); |
| } |
| |
| extern "C" int pcu_rx_data_ind_pdtch(uint8_t trx_no, uint8_t ts_no, uint8_t *data, |
| uint8_t len, uint32_t fn, struct pcu_l1_meas *meas) |
| { |
| struct gprs_rlcmac_pdch *pdch; |
| |
| pdch = &bts_main_data()->trx[trx_no].pdch[ts_no]; |
| return pdch->rcv_block(data, len, fn, meas); |
| } |
| |
| static int pcu_rx_data_ind_bcch(uint8_t *data, uint8_t len) |
| { |
| struct gprs_rlcmac_bts *bts = bts_main_data(); |
| |
| if (len == 0) { |
| bts->si13_is_set = false; |
| LOGP(DL1IF, LOGL_INFO, "Received PCU data indication with empty SI13: cache cleaned\n"); |
| return 0; |
| } |
| |
| if (len != GSM_MACBLOCK_LEN) { |
| LOGP(DL1IF, LOGL_ERROR, "Received PCU data indication with SI13 with unexpected length %u\n", len); |
| return -EINVAL; |
| } |
| |
| memcpy(bts->si13, data, GSM_MACBLOCK_LEN); |
| bts->si13_is_set = true; |
| |
| return 0; |
| } |
| |
| static int pcu_rx_data_ind(struct gsm_pcu_if_data *data_ind) |
| { |
| struct gprs_rlcmac_bts *bts = bts_main_data(); |
| int rc; |
| int current_fn = get_current_fn(); |
| pcu_l1_meas meas; |
| uint8_t gsmtap_chantype; |
| |
| LOGP(DL1IF, LOGL_DEBUG, "Data indication received: sapi=%d arfcn=%d " |
| "fn=%d cur_fn=%d block=%d data=%s\n", data_ind->sapi, |
| data_ind->arfcn, data_ind->fn, current_fn, data_ind->block_nr, |
| osmo_hexdump(data_ind->data, data_ind->len)); |
| |
| switch (data_ind->sapi) { |
| case PCU_IF_SAPI_PDTCH: |
| meas.set_rssi(data_ind->rssi); |
| /* convert BER to % value */ |
| meas.set_ber(data_ind->ber10k / 100); |
| meas.set_bto(data_ind->ta_offs_qbits); |
| meas.set_link_qual(data_ind->lqual_cb / 10); |
| |
| LOGP(DL1IF, LOGL_DEBUG, "Data indication with raw measurements received: BER10k = %d, BTO = %d, Q = %d\n", |
| data_ind->ber10k, data_ind->ta_offs_qbits, data_ind->lqual_cb); |
| |
| rc = pcu_rx_data_ind_pdtch(data_ind->trx_nr, data_ind->ts_nr, |
| data_ind->data, data_ind->len, data_ind->fn, |
| &meas); |
| gsmtap_chantype = GSMTAP_CHANNEL_PDTCH; |
| break; |
| case PCU_IF_SAPI_BCCH: |
| rc = pcu_rx_data_ind_bcch(data_ind->data, data_ind->len); |
| gsmtap_chantype = GSMTAP_CHANNEL_BCCH; |
| break; |
| default: |
| LOGP(DL1IF, LOGL_ERROR, "Received PCU data indication with " |
| "unsupported sapi %d\n", data_ind->sapi); |
| rc = -EINVAL; |
| gsmtap_chantype = GSMTAP_CHANNEL_UNKNOWN; |
| } |
| |
| if (rc < 0 && (bts->gsmtap_categ_mask & (1 <<PCU_GSMTAP_C_UL_UNKNOWN))) { |
| gsmtap_send(bts->gsmtap, data_ind->arfcn | GSMTAP_ARFCN_F_UPLINK, data_ind->ts_nr, |
| gsmtap_chantype, 0, data_ind->fn, meas.rssi, meas.link_qual, data_ind->data, data_ind->len); |
| } |
| |
| return rc; |
| } |
| |
| static int pcu_rx_data_cnf(struct gsm_pcu_if_data *data_cnf) |
| { |
| int rc = 0; |
| int current_fn = get_current_fn(); |
| |
| LOGP(DL1IF, LOGL_DEBUG, "Data confirm received: sapi=%d fn=%d cur_fn=%d\n", |
| data_cnf->sapi, data_cnf->fn, current_fn); |
| |
| switch (data_cnf->sapi) { |
| case PCU_IF_SAPI_PCH: |
| if (data_cnf->data[2] == 0x3f) |
| BTS::main_bts()->rcv_imm_ass_cnf(data_cnf->data, data_cnf->fn); |
| break; |
| default: |
| LOGP(DL1IF, LOGL_ERROR, "Received PCU data confirm with " |
| "unsupported sapi %d\n", data_cnf->sapi); |
| rc = -EINVAL; |
| } |
| |
| return rc; |
| } |
| |
| // FIXME: remove this, when changed from c++ to c. |
| extern "C" int pcu_rx_rts_req_pdtch(uint8_t trx, uint8_t ts, |
| uint32_t fn, uint8_t block_nr) |
| { |
| return gprs_rlcmac_rcv_rts_block(bts_main_data(), |
| trx, ts, fn, block_nr); |
| } |
| extern "C" int pcu_rx_rts_req_ptcch(uint8_t trx, uint8_t ts, |
| uint32_t fn, uint8_t block_nr) |
| { |
| struct gprs_rlcmac_bts *bts = bts_main_data(); |
| struct gprs_rlcmac_pdch *pdch; |
| |
| /* Prevent buffer overflow */ |
| if (trx >= ARRAY_SIZE(bts->trx) || ts >= 8) |
| return -EINVAL; |
| |
| /* Make sure PDCH time-slot is enabled */ |
| pdch = &bts->trx[trx].pdch[ts]; |
| if (!pdch->m_is_enabled) |
| return -EAGAIN; |
| |
| pcu_l1if_tx_ptcch(trx, ts, bts->trx[trx].arfcn, fn, block_nr, |
| pdch->ptcch_msg, GSM_MACBLOCK_LEN); |
| return 0; |
| } |
| |
| static int pcu_rx_rts_req(struct gsm_pcu_if_rts_req *rts_req) |
| { |
| int rc = 0; |
| int current_fn = get_current_fn(); |
| |
| LOGP(DL1IF, LOGL_DEBUG, "RTS request received: trx=%d ts=%d sapi=%d " |
| "arfcn=%d fn=%d cur_fn=%d block=%d\n", rts_req->trx_nr, rts_req->ts_nr, |
| rts_req->sapi, rts_req->arfcn, rts_req->fn, current_fn, rts_req->block_nr); |
| |
| switch (rts_req->sapi) { |
| case PCU_IF_SAPI_PDTCH: |
| pcu_rx_rts_req_pdtch(rts_req->trx_nr, rts_req->ts_nr, |
| rts_req->fn, rts_req->block_nr); |
| break; |
| case PCU_IF_SAPI_PTCCH: |
| pcu_rx_rts_req_ptcch(rts_req->trx_nr, rts_req->ts_nr, |
| rts_req->fn, rts_req->block_nr); |
| break; |
| default: |
| LOGP(DL1IF, LOGL_ERROR, "Received PCU RTS request with " |
| "unsupported sapi %d\n", rts_req->sapi); |
| rc = -EINVAL; |
| } |
| |
| return rc; |
| } |
| |
| /* C -> C++ adapter for direct DSP access code (e.g. osmo-bts-sysmo) */ |
| extern "C" int pcu_rx_rach_ind_ptcch(uint8_t trx_nr, uint8_t ts_nr, uint32_t fn, int16_t qta) |
| { |
| struct rach_ind_params rip = { |
| /* The content of RA is not of interest on PTCCH/U */ |
| .burst_type = GSM_L1_BURST_TYPE_ACCESS_0, |
| .is_11bit = false, |
| .ra = 0x00, |
| .trx_nr = trx_nr, |
| .ts_nr = ts_nr, |
| .rfn = fn, |
| .qta = qta, |
| }; |
| |
| return BTS::main_bts()->rcv_ptcch_rach(&rip); |
| } |
| |
| static int pcu_rx_rach_ind(const struct gsm_pcu_if_rach_ind *rach_ind) |
| { |
| int rc = 0; |
| int current_fn = get_current_fn(); |
| |
| LOGP(DL1IF, LOGL_INFO, "RACH request received: sapi=%d " |
| "qta=%d, ra=0x%02x, fn=%u, cur_fn=%d, is_11bit=%d\n", rach_ind->sapi, rach_ind->qta, |
| rach_ind->ra, rach_ind->fn, current_fn, rach_ind->is_11bit); |
| |
| struct rach_ind_params rip = { |
| .burst_type = (enum ph_burst_type) rach_ind->burst_type, |
| .is_11bit = rach_ind->is_11bit > 0, |
| .ra = rach_ind->ra, |
| .trx_nr = rach_ind->trx_nr, |
| .ts_nr = rach_ind->ts_nr, |
| .rfn = rach_ind->fn, |
| .qta = rach_ind->qta, |
| }; |
| |
| switch (rach_ind->sapi) { |
| case PCU_IF_SAPI_RACH: |
| rc = BTS::main_bts()->rcv_rach(&rip); |
| break; |
| case PCU_IF_SAPI_PTCCH: |
| rc = BTS::main_bts()->rcv_ptcch_rach(&rip); |
| break; |
| default: |
| LOGP(DL1IF, LOGL_ERROR, "Received PCU rach request with " |
| "unsupported sapi %d\n", rach_ind->sapi); |
| rc = -EINVAL; |
| } |
| |
| return rc; |
| } |
| |
| static int pcu_rx_info_ind(struct gsm_pcu_if_info_ind *info_ind) |
| { |
| struct gprs_rlcmac_bts *bts = bts_main_data(); |
| struct gprs_bssgp_pcu *pcu; |
| struct gprs_rlcmac_pdch *pdch; |
| struct in_addr ia; |
| int rc = 0; |
| unsigned int trx, ts; |
| int i; |
| |
| if (info_ind->version != PCU_IF_VERSION) { |
| fprintf(stderr, "PCU interface version number of BTS (%d) is " |
| "different (%d).\nPlease re-compile!\n", |
| info_ind->version, PCU_IF_VERSION); |
| exit(-1); |
| } |
| |
| LOGP(DL1IF, LOGL_DEBUG, "Info indication received:\n"); |
| |
| if (!(info_ind->flags & PCU_IF_FLAG_ACTIVE)) { |
| LOGP(DL1IF, LOGL_NOTICE, "BTS not available\n"); |
| if (!bts->active) |
| return -EAGAIN; |
| bssgp_failed: |
| bts->active = false; |
| /* free all TBF */ |
| for (trx = 0; trx < ARRAY_SIZE(bts->trx); trx++) { |
| bts->trx[trx].arfcn = info_ind->trx[trx].arfcn; |
| for (ts = 0; ts < ARRAY_SIZE(bts->trx[0].pdch); ts++) |
| bts->trx[trx].pdch[ts].free_resources(); |
| } |
| gprs_bssgp_destroy(); |
| exit(0); |
| } |
| LOGP(DL1IF, LOGL_INFO, "BTS available\n"); |
| LOGP(DL1IF, LOGL_DEBUG, " mcc=%03u\n", info_ind->mcc); |
| LOGP(DL1IF, LOGL_DEBUG, " mnc=%0*u\n", info_ind->mnc_3_digits, info_ind->mnc); |
| LOGP(DL1IF, LOGL_DEBUG, " lac=%d\n", info_ind->lac); |
| LOGP(DL1IF, LOGL_DEBUG, " rac=%d\n", info_ind->rac); |
| LOGP(DL1IF, LOGL_DEBUG, " cell_id=%d\n", info_ind->cell_id); |
| LOGP(DL1IF, LOGL_DEBUG, " bsic=%d\n", info_ind->bsic); |
| LOGP(DL1IF, LOGL_DEBUG, " nsei=%d\n", info_ind->nsei); |
| LOGP(DL1IF, LOGL_DEBUG, " nse_timer=%d %d %d %d %d %d %d\n", |
| info_ind->nse_timer[0], info_ind->nse_timer[1], |
| info_ind->nse_timer[2], info_ind->nse_timer[3], |
| info_ind->nse_timer[4], info_ind->nse_timer[5], |
| info_ind->nse_timer[6]); |
| LOGP(DL1IF, LOGL_DEBUG, " cell_timer=%d %d %d %d %d %d %d %d %d %d " |
| "%d\n", |
| info_ind->cell_timer[0], info_ind->cell_timer[1], |
| info_ind->cell_timer[2], info_ind->cell_timer[3], |
| info_ind->cell_timer[4], info_ind->cell_timer[5], |
| info_ind->cell_timer[6], info_ind->cell_timer[7], |
| info_ind->cell_timer[8], info_ind->cell_timer[9], |
| info_ind->cell_timer[10]); |
| LOGP(DL1IF, LOGL_DEBUG, " repeat_time=%d\n", info_ind->repeat_time); |
| LOGP(DL1IF, LOGL_DEBUG, " repeat_count=%d\n", info_ind->repeat_count); |
| LOGP(DL1IF, LOGL_DEBUG, " bvci=%d\n", info_ind->bvci); |
| LOGP(DL1IF, LOGL_DEBUG, " t3142=%d\n", info_ind->t3142); |
| LOGP(DL1IF, LOGL_DEBUG, " t3169=%d\n", info_ind->t3169); |
| LOGP(DL1IF, LOGL_DEBUG, " t3191=%d\n", info_ind->t3191); |
| LOGP(DL1IF, LOGL_DEBUG, " t3193=%d (ms)\n", info_ind->t3193_10ms * 10); |
| LOGP(DL1IF, LOGL_DEBUG, " t3195=%d\n", info_ind->t3195); |
| LOGP(DL1IF, LOGL_DEBUG, " n3101=%d\n", info_ind->n3101); |
| LOGP(DL1IF, LOGL_DEBUG, " n3103=%d\n", info_ind->n3103); |
| LOGP(DL1IF, LOGL_DEBUG, " n3105=%d\n", info_ind->n3105); |
| LOGP(DL1IF, LOGL_DEBUG, " cv_countdown=%d\n", info_ind->cv_countdown); |
| LOGP(DL1IF, LOGL_DEBUG, " dl_tbf_ext=%d\n", info_ind->dl_tbf_ext); |
| LOGP(DL1IF, LOGL_DEBUG, " ul_tbf_ext=%d\n", info_ind->ul_tbf_ext); |
| bts->bsic = info_ind->bsic; |
| for (i = 0; i < 4; i++) { |
| if ((info_ind->flags & (PCU_IF_FLAG_CS1 << i))) |
| LOGP(DL1IF, LOGL_DEBUG, " Use CS%d\n", i+1); |
| } |
| for (i = 0; i < 9; i++) { |
| if ((info_ind->flags & (PCU_IF_FLAG_MCS1 << i))) |
| LOGP(DL1IF, LOGL_DEBUG, " Use MCS%d\n", i+1); |
| } |
| LOGP(DL1IF, LOGL_DEBUG, " initial_cs=%d\n", info_ind->initial_cs); |
| LOGP(DL1IF, LOGL_DEBUG, " initial_mcs=%d\n", info_ind->initial_mcs); |
| LOGP(DL1IF, LOGL_DEBUG, " nsvci=%d\n", info_ind->nsvci[0]); |
| LOGP(DL1IF, LOGL_DEBUG, " local_port=%d\n", info_ind->local_port[0]); |
| LOGP(DL1IF, LOGL_DEBUG, " remote_port=%d\n", info_ind->remote_port[0]); |
| ia.s_addr = htonl(info_ind->remote_ip[0]); |
| LOGP(DL1IF, LOGL_DEBUG, " remote_ip=%s\n", inet_ntoa(ia)); |
| |
| pcu = gprs_bssgp_create_and_connect(bts, info_ind->local_port[0], |
| info_ind->remote_ip[0], info_ind->remote_port[0], |
| info_ind->nsei, info_ind->nsvci[0], info_ind->bvci, |
| info_ind->mcc, info_ind->mnc, info_ind->mnc_3_digits, info_ind->lac, info_ind->rac, |
| info_ind->cell_id); |
| if (!pcu) { |
| LOGP(DL1IF, LOGL_NOTICE, "SGSN not available\n"); |
| goto bssgp_failed; |
| } |
| |
| bts->cs1 = !!(info_ind->flags & PCU_IF_FLAG_CS1); |
| bts->cs2 = !!(info_ind->flags & PCU_IF_FLAG_CS2); |
| bts->cs3 = !!(info_ind->flags & PCU_IF_FLAG_CS3); |
| bts->cs4 = !!(info_ind->flags & PCU_IF_FLAG_CS4); |
| if (!bts->cs1 && !bts->cs2 && !bts->cs3 && !bts->cs4) |
| bts->cs1 = 1; |
| if (info_ind->t3142) { /* if timer values are set */ |
| osmo_tdef_set(bts->T_defs_bts, 3142, info_ind->t3142, OSMO_TDEF_S); |
| osmo_tdef_set(bts->T_defs_bts, 3169, info_ind->t3169, OSMO_TDEF_S); |
| osmo_tdef_set(bts->T_defs_bts, 3191, info_ind->t3191, OSMO_TDEF_S); |
| osmo_tdef_set(bts->T_defs_bts, 3193, info_ind->t3193_10ms * 10, OSMO_TDEF_MS); |
| osmo_tdef_set(bts->T_defs_bts, 3195, info_ind->t3195, OSMO_TDEF_S); |
| bts->n3101 = info_ind->n3101; |
| bts->n3103 = info_ind->n3103; |
| bts->n3105 = info_ind->n3105; |
| } |
| if (!bts->force_cs) { |
| if (info_ind->initial_cs < 1 || info_ind->initial_cs > 4) |
| bts->initial_cs_dl = 1; |
| else |
| bts->initial_cs_dl = info_ind->initial_cs; |
| bts->initial_cs_ul = bts->initial_cs_dl; |
| } |
| |
| for (trx = 0; trx < ARRAY_SIZE(bts->trx); trx++) { |
| bts->trx[trx].arfcn = info_ind->trx[trx].arfcn; |
| if ((info_ind->flags & PCU_IF_FLAG_SYSMO) |
| && info_ind->trx[trx].hlayer1) { |
| #ifdef ENABLE_DIRECT_PHY |
| LOGP(DL1IF, LOGL_DEBUG, " TRX %d hlayer1=%x\n", trx, |
| info_ind->trx[trx].hlayer1); |
| if (!bts->trx[trx].fl1h) |
| bts->trx[trx].fl1h = l1if_open_pdch( |
| trx, |
| info_ind->trx[trx].hlayer1, |
| bts->gsmtap); |
| if (!bts->trx[trx].fl1h) { |
| LOGP(DL1IF, LOGL_FATAL, "Failed to open direct " |
| "DSP access for PDCH.\n"); |
| exit(0); |
| } |
| #else |
| LOGP(DL1IF, LOGL_FATAL, "Compiled without direct DSP " |
| "access for PDCH, but enabled at " |
| "BTS. Please deactivate it!\n"); |
| exit(0); |
| #endif |
| } |
| |
| for (ts = 0; ts < ARRAY_SIZE(bts->trx[0].pdch); ts++) { |
| pdch = &bts->trx[trx].pdch[ts]; |
| if ((info_ind->trx[trx].pdch_mask & (1 << ts))) { |
| /* FIXME: activate dynamically at RLCMAC */ |
| if (!pdch->is_enabled()) { |
| #ifdef ENABLE_DIRECT_PHY |
| if ((info_ind->flags & |
| PCU_IF_FLAG_SYSMO)) |
| l1if_connect_pdch( |
| bts->trx[trx].fl1h, ts); |
| #endif |
| pcu_tx_act_req(trx, ts, 1); |
| pdch->enable(); |
| } |
| pdch->tsc = info_ind->trx[trx].tsc[ts]; |
| LOGP(DL1IF, LOGL_INFO, "PDCH: trx=%d ts=%d\n", |
| trx, ts); |
| } else { |
| if (pdch->is_enabled()) { |
| pcu_tx_act_req(trx, ts, 0); |
| pdch->free_resources(); |
| pdch->disable(); |
| } |
| } |
| } |
| } |
| |
| bts->active = true; |
| return rc; |
| } |
| |
| static int pcu_rx_time_ind(struct gsm_pcu_if_time_ind *time_ind) |
| { |
| uint8_t fn13 = time_ind->fn % 13; |
| |
| /* omit frame numbers not starting at a MAC block */ |
| if (fn13 != 0 && fn13 != 4 && fn13 != 8) |
| return 0; |
| |
| LOGP(DL1IF, LOGL_DEBUG, "Time indication received: %d\n", time_ind->fn % 52); |
| |
| BTS::main_bts()->set_current_frame_number(time_ind->fn); |
| return 0; |
| } |
| |
| static int pcu_rx_pag_req(struct gsm_pcu_if_pag_req *pag_req) |
| { |
| LOGP(DL1IF, LOGL_DEBUG, "Paging request received: chan_needed=%d " |
| "length=%d\n", pag_req->chan_needed, pag_req->identity_lv[0]); |
| |
| /* check if identity does not fit: length > sizeof(lv) - 1 */ |
| if (pag_req->identity_lv[0] >= sizeof(pag_req->identity_lv)) { |
| LOGP(DL1IF, LOGL_ERROR, "Paging identity too large (%" PRIu8 ")\n", |
| pag_req->identity_lv[0]); |
| return -EINVAL; |
| } |
| |
| return BTS::main_bts()->add_paging(pag_req->chan_needed, &pag_req->identity_lv[1], |
| pag_req->identity_lv[0]); |
| } |
| |
| static int pcu_rx_susp_req(struct gsm_pcu_if_susp_req *susp_req) |
| { |
| struct bssgp_bvc_ctx *bctx = gprs_bssgp_pcu_current_bctx(); |
| struct gprs_ra_id ra_id; |
| |
| gsm48_parse_ra(&ra_id, susp_req->ra_id); |
| |
| LOGP(DL1IF, LOGL_INFO, "GPRS Suspend request received: TLLI=0x%08x RAI=%s\n", |
| susp_req->tlli, osmo_rai_name(&ra_id)); |
| |
| if (!bctx) |
| return -1; |
| |
| return bssgp_tx_suspend(bctx->nsei, susp_req->tlli, &ra_id); |
| } |
| |
| static int pcu_rx_app_info_req(struct gsm_pcu_if_app_info_req *app_info_req) |
| { |
| LListHead<GprsMs> *ms_iter; |
| BTS *bts = BTS::main_bts(); |
| struct gprs_rlcmac_bts *bts_data = bts->bts_data(); |
| |
| LOGP(DL1IF, LOGL_DEBUG, "Application Information Request received: type=0x%08x len=%i\n", |
| app_info_req->application_type, app_info_req->len); |
| |
| bts_data->app_info_pending = 0; |
| llist_for_each(ms_iter, &bts->ms_store().ms_list()) { |
| GprsMs *ms = ms_iter->entry(); |
| if (!ms->dl_tbf()) |
| continue; |
| bts_data->app_info_pending++; |
| ms->app_info_pending = true; |
| } |
| |
| if (!bts_data->app_info_pending) { |
| LOGP(DL1IF, LOGL_NOTICE, "Packet Application Information will not be sent, no subscribers with active" |
| " TBF\n"); |
| return -1; |
| } |
| |
| if (bts_data->app_info) { |
| LOGP(DL1IF, LOGL_NOTICE, "Previous Packet Application Information was not sent to all subscribers," |
| " overwriting with new one\n"); |
| msgb_free(bts_data->app_info); |
| } |
| |
| LOGP(DL1IF, LOGL_INFO, "Sending Packet Application Information to %i subscribers with active TBF\n", |
| bts_data->app_info_pending); |
| bts_data->app_info = gprs_rlcmac_app_info_msg(app_info_req); |
| return 0; |
| } |
| |
| int pcu_rx(uint8_t msg_type, struct gsm_pcu_if *pcu_prim) |
| { |
| int rc = 0; |
| |
| switch (msg_type) { |
| case PCU_IF_MSG_DATA_IND: |
| rc = pcu_rx_data_ind(&pcu_prim->u.data_ind); |
| break; |
| case PCU_IF_MSG_DATA_CNF: |
| rc = pcu_rx_data_cnf(&pcu_prim->u.data_cnf); |
| break; |
| case PCU_IF_MSG_RTS_REQ: |
| rc = pcu_rx_rts_req(&pcu_prim->u.rts_req); |
| break; |
| case PCU_IF_MSG_RACH_IND: |
| rc = pcu_rx_rach_ind(&pcu_prim->u.rach_ind); |
| break; |
| case PCU_IF_MSG_INFO_IND: |
| rc = pcu_rx_info_ind(&pcu_prim->u.info_ind); |
| break; |
| case PCU_IF_MSG_TIME_IND: |
| rc = pcu_rx_time_ind(&pcu_prim->u.time_ind); |
| break; |
| case PCU_IF_MSG_PAG_REQ: |
| rc = pcu_rx_pag_req(&pcu_prim->u.pag_req); |
| break; |
| case PCU_IF_MSG_SUSP_REQ: |
| rc = pcu_rx_susp_req(&pcu_prim->u.susp_req); |
| break; |
| case PCU_IF_MSG_APP_INFO_REQ: |
| rc = pcu_rx_app_info_req(&pcu_prim->u.app_info_req); |
| break; |
| default: |
| LOGP(DL1IF, LOGL_ERROR, "Received unknown PCU msg type %d\n", |
| msg_type); |
| rc = -EINVAL; |
| } |
| |
| return rc; |
| } |