75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/* gprs_rlcmac.cpp
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*
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* Copyright (C) 2012 Ivan Klyuchnikov
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* Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu>
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* Copyright (C) 2013 by Holger Hans Peter Freyther
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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extern "C" {
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#include <osmocom/gsm/gsm48.h>
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}
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#include <pcu_l1_if.h>
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#include <gprs_rlcmac.h>
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#include <bts.h>
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#include <encoding.h>
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#include <tbf.h>
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#include <gprs_debug.h>
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extern void *tall_pcu_ctx;
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int gprs_rlcmac_paging_request(struct gprs_rlcmac_bts *bts, const struct osmo_mobile_identity *mi,
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uint16_t pgroup)
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{
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if (log_check_level(DRLCMAC, LOGL_NOTICE)) {
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char str[64];
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osmo_mobile_identity_to_str_buf(str, sizeof(str), mi);
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LOGP(DRLCMAC, LOGL_NOTICE, "TX: [PCU -> BTS] Paging Request (CCCH) MI=%s\n", str);
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}
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bitvec *paging_request = bitvec_alloc(22, tall_pcu_ctx);
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bitvec_unhex(paging_request, DUMMY_VEC);
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int plen = Encoding::write_paging_request(paging_request, mi);
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if (plen <= 0) {
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LOGP(DRLCMAC, LOGL_ERROR, "TX: [PCU -> BTS] Failed to encode Paging Request\n");
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return -1;
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}
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bts_do_rate_ctr_inc(bts, CTR_PCH_REQUESTS);
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pcu_l1if_tx_pch(bts, paging_request, plen, pgroup);
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bitvec_free(paging_request);
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return 0;
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}
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/* Encode Application Information Request to Packet Application Information (3GPP TS 44.060 11.2.47) */
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struct msgb *gprs_rlcmac_app_info_msg(const struct gsm_pcu_if_app_info_req *req) {
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struct msgb *msg;
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uint16_t msgb_len = req->len + 1;
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struct bitvec bv = {0, msgb_len, NULL};
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const enum bit_value page_mode[] = {ZERO, ZERO}; /* Normal Paging (3GPP TS 44.060 12.20) */
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if (!req->len) {
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LOGP(DRLCMAC, LOGL_ERROR, "Application Information Request with zero length received!\n");
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return NULL;
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}
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msg = msgb_alloc(msgb_len, "app_info_msg");
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if (!msg)
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return NULL;
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bv.data = msgb_put(msg, msgb_len);
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bitvec_set_bits(&bv, page_mode, 2);
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bitvec_set_uint(&bv, req->application_type, 4);
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bitvec_set_bytes(&bv, req->data, req->len);
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return msg;
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}
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