| /* gprs_rlcmac.cpp |
| * |
| * Copyright (C) 2012 Ivan Klyuchnikov |
| * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu> |
| * Copyright (C) 2013 by Holger Hans Peter Freyther |
| * |
| * 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. |
| */ |
| |
| extern "C" { |
| #include <osmocom/gsm/gsm48.h> |
| } |
| |
| #include <pcu_l1_if.h> |
| #include <gprs_rlcmac.h> |
| #include <bts.h> |
| #include <bts_pch_timer.h> |
| #include <encoding.h> |
| #include <tbf.h> |
| #include <gprs_debug.h> |
| |
| extern void *tall_pcu_ctx; |
| |
| int gprs_rlcmac_paging_request(struct gprs_rlcmac_bts *bts, const struct osmo_mobile_identity *mi, |
| uint16_t pgroup) |
| { |
| if (log_check_level(DRLCMAC, LOGL_NOTICE)) { |
| char str[64]; |
| osmo_mobile_identity_to_str_buf(str, sizeof(str), mi); |
| LOGP(DRLCMAC, LOGL_NOTICE, "TX: [PCU -> BTS] Paging Request (CCCH) MI=%s\n", str); |
| } |
| bitvec *paging_request = bitvec_alloc(22, tall_pcu_ctx); |
| bitvec_unhex(paging_request, DUMMY_VEC); |
| int plen = Encoding::write_paging_request(paging_request, mi); |
| if (plen <= 0) { |
| LOGP(DRLCMAC, LOGL_ERROR, "TX: [PCU -> BTS] Failed to encode Paging Request\n"); |
| return -1; |
| } |
| bts_do_rate_ctr_inc(bts, CTR_PCH_REQUESTS); |
| bts_pch_timer_start(bts, mi->imsi); |
| pcu_l1if_tx_pch(bts, paging_request, plen, pgroup); |
| bitvec_free(paging_request); |
| |
| return 0; |
| } |
| |
| /* Encode Application Information Request to Packet Application Information (3GPP TS 44.060 11.2.47) */ |
| struct msgb *gprs_rlcmac_app_info_msg(const struct gsm_pcu_if_app_info_req *req) { |
| struct msgb *msg; |
| uint16_t msgb_len = req->len + 1; |
| struct bitvec bv = {0, msgb_len, NULL}; |
| const enum bit_value page_mode[] = {ZERO, ZERO}; /* Normal Paging (3GPP TS 44.060 12.20) */ |
| |
| if (!req->len) { |
| LOGP(DRLCMAC, LOGL_ERROR, "Application Information Request with zero length received!\n"); |
| return NULL; |
| } |
| |
| msg = msgb_alloc(msgb_len, "app_info_msg"); |
| if (!msg) |
| return NULL; |
| |
| bv.data = msgb_put(msg, msgb_len); |
| bitvec_set_bits(&bv, page_mode, 2); |
| bitvec_set_uint(&bv, req->application_type, 4); |
| bitvec_set_bytes(&bv, req->data, req->len); |
| return msg; |
| } |