diff options
Diffstat (limited to 'src/libbsc/bsc_rll.c')
| -rw-r--r-- | src/libbsc/bsc_rll.c | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/src/libbsc/bsc_rll.c b/src/libbsc/bsc_rll.c deleted file mode 100644 index bb488da15..000000000 --- a/src/libbsc/bsc_rll.c +++ /dev/null @@ -1,139 +0,0 @@ -/* GSM BSC Radio Link Layer API - * 3GPP TS 08.58 version 8.6.0 Release 1999 / ETSI TS 100 596 V8.6.0 */ - -/* (C) 2009 by Harald Welte <laforge@gnumonks.org> - * - * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License as published by - * the Free Software Foundation; either version 3 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 Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * - */ - -#include <errno.h> - -#include <openbsc/debug.h> -#include <osmocom/core/talloc.h> -#include <osmocom/core/timer.h> -#include <osmocom/core/linuxlist.h> -#include <openbsc/bsc_rll.h> -#include <openbsc/gsm_data.h> -#include <openbsc/chan_alloc.h> -#include <openbsc/abis_rsl.h> -#include <openbsc/signal.h> - -struct bsc_rll_req { - struct llist_head list; - struct osmo_timer_list timer; - - struct gsm_lchan *lchan; - uint8_t link_id; - - void (*cb)(struct gsm_lchan *lchan, uint8_t link_id, - void *data, enum bsc_rllr_ind); - void *data; -}; - -/* we only compare C1, C2 and SAPI */ -#define LINKID_MASK 0xC7 - -static LLIST_HEAD(bsc_rll_reqs); - -static void complete_rllr(struct bsc_rll_req *rllr, enum bsc_rllr_ind type) -{ - llist_del(&rllr->list); - rllr->cb(rllr->lchan, rllr->link_id, rllr->data, type); - talloc_free(rllr); -} - -static void timer_cb(void *_rllr) -{ - struct bsc_rll_req *rllr = _rllr; - - complete_rllr(rllr, BSC_RLLR_IND_TIMEOUT); -} - -/* establish a RLL connection with given SAPI / priority */ -int rll_establish(struct gsm_lchan *lchan, uint8_t sapi, - void (*cb)(struct gsm_lchan *, uint8_t, void *, - enum bsc_rllr_ind), - void *data) -{ - struct bsc_rll_req *rllr = talloc_zero(tall_bsc_ctx, struct bsc_rll_req); - uint8_t link_id; - if (!rllr) - return -ENOMEM; - - link_id = sapi; - - /* If we are a TCH and not in signalling mode, we need to - * indicate that the new RLL connection is to be made on the SACCH */ - if ((lchan->type == GSM_LCHAN_TCH_F || - lchan->type == GSM_LCHAN_TCH_H) && sapi != 0) - link_id |= 0x40; - - rllr->lchan = lchan; - rllr->link_id = link_id; - rllr->cb = cb; - rllr->data = data; - - llist_add(&rllr->list, &bsc_rll_reqs); - - osmo_timer_setup(&rllr->timer, timer_cb, rllr); - osmo_timer_schedule(&rllr->timer, 7, 0); - - /* send the RSL RLL ESTablish REQuest */ - return rsl_establish_request(rllr->lchan, rllr->link_id); -} - -/* Called from RSL code in case we have received an indication regarding - * any RLL link */ -void rll_indication(struct gsm_lchan *lchan, uint8_t link_id, uint8_t type) -{ - struct bsc_rll_req *rllr, *rllr2; - - llist_for_each_entry_safe(rllr, rllr2, &bsc_rll_reqs, list) { - if (rllr->lchan == lchan && - (rllr->link_id & LINKID_MASK) == (link_id & LINKID_MASK)) { - osmo_timer_del(&rllr->timer); - complete_rllr(rllr, type); - return; - } - } -} - -static int rll_lchan_signal(unsigned int subsys, unsigned int signal, - void *handler_data, void *signal_data) -{ - struct challoc_signal_data *challoc; - struct bsc_rll_req *rllr, *rllr2; - - if (subsys != SS_CHALLOC || signal != S_CHALLOC_FREED) - return 0; - - challoc = (struct challoc_signal_data *) signal_data; - - llist_for_each_entry_safe(rllr, rllr2, &bsc_rll_reqs, list) { - if (rllr->lchan == challoc->lchan) { - osmo_timer_del(&rllr->timer); - complete_rllr(rllr, BSC_RLLR_IND_ERR_IND); - } - } - - return 0; -} - -static __attribute__((constructor)) void on_dso_load_rll(void) -{ - osmo_signal_register_handler(SS_CHALLOC, rll_lchan_signal, NULL); -} |