Holger Hans Peter Freyther | ec32b58 | 2010-03-23 07:40:46 +0100 | [diff] [blame] | 1 | /* GSM 08.08 like API for OpenBSC. The bridge from MSC to BSC */ |
| 2 | |
| 3 | /* (C) 2010 by Holger Hans Peter Freyther |
Holger Hans Peter Freyther | abcddf1 | 2010-06-14 18:20:15 +0800 | [diff] [blame] | 4 | * (C) 2010 by On Waves |
Holger Hans Peter Freyther | 2a9285c | 2010-06-14 18:03:06 +0800 | [diff] [blame] | 5 | * (C) 2009 by Harald Welte <laforge@gnumonks.org> |
Holger Hans Peter Freyther | ec32b58 | 2010-03-23 07:40:46 +0100 | [diff] [blame] | 6 | * |
| 7 | * All Rights Reserved |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 21 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | #include <openbsc/bsc_api.h> |
Holger Hans Peter Freyther | abcddf1 | 2010-06-14 18:20:15 +0800 | [diff] [blame] | 26 | #include <openbsc/gsm_data.h> |
| 27 | #include <openbsc/signal.h> |
Holger Hans Peter Freyther | ec32b58 | 2010-03-23 07:40:46 +0100 | [diff] [blame] | 28 | #include <openbsc/abis_rsl.h> |
| 29 | |
Holger Hans Peter Freyther | abcddf1 | 2010-06-14 18:20:15 +0800 | [diff] [blame] | 30 | #include <osmocore/talloc.h> |
| 31 | |
| 32 | int bsc_api_init(struct gsm_network *network, struct bsc_api *api) |
| 33 | { |
| 34 | network->bsc_api = api; |
| 35 | return 0; |
| 36 | } |
Holger Hans Peter Freyther | ec32b58 | 2010-03-23 07:40:46 +0100 | [diff] [blame] | 37 | |
| 38 | int gsm0808_submit_dtap(struct gsm_subscriber_connection *conn, |
| 39 | struct msgb *msg, int link_id) |
| 40 | { |
| 41 | msg->lchan = conn->lchan; |
| 42 | msg->trx = msg->lchan->ts->trx; |
| 43 | return rsl_data_request(msg, link_id); |
| 44 | } |
Holger Hans Peter Freyther | 2a9285c | 2010-06-14 18:03:06 +0800 | [diff] [blame] | 45 | |
| 46 | /* dequeue messages to layer 4 */ |
| 47 | int bsc_upqueue(struct gsm_network *net) |
| 48 | { |
| 49 | struct gsm_mncc *mncc; |
| 50 | struct msgb *msg; |
| 51 | int work = 0; |
| 52 | |
| 53 | if (net) |
| 54 | while ((msg = msgb_dequeue(&net->upqueue))) { |
| 55 | mncc = (struct gsm_mncc *)msg->data; |
| 56 | if (net->mncc_recv) |
| 57 | net->mncc_recv(net, mncc->msg_type, mncc); |
| 58 | work = 1; /* work done */ |
| 59 | talloc_free(msg); |
| 60 | } |
| 61 | |
| 62 | return work; |
| 63 | } |
Holger Hans Peter Freyther | abcddf1 | 2010-06-14 18:20:15 +0800 | [diff] [blame] | 64 | |
| 65 | static int bsc_handle_lchan_signal(unsigned int subsys, unsigned int signal, |
| 66 | void *handler_data, void *signal_data) |
| 67 | { |
| 68 | struct bsc_api *bsc; |
| 69 | struct gsm_lchan *lchan; |
| 70 | |
| 71 | if (subsys != SS_LCHAN || signal != S_LCHAN_UNEXPECTED_RELEASE) |
| 72 | return 0; |
| 73 | |
| 74 | lchan = (struct gsm_lchan *)signal_data; |
| 75 | if (!lchan) |
| 76 | return 0; |
| 77 | |
| 78 | |
| 79 | bsc = lchan->ts->trx->bts->network->bsc_api; |
| 80 | if (!bsc || !bsc->clear_request) |
| 81 | return 0; |
| 82 | |
| 83 | bsc->clear_request(&lchan->conn, 0); |
| 84 | return 0; |
| 85 | } |
| 86 | |
| 87 | static __attribute__((constructor)) void on_dso_load_bsc(void) |
| 88 | { |
| 89 | register_signal_handler(SS_LCHAN, bsc_handle_lchan_signal, NULL); |
| 90 | } |