diff options
author | Harald Welte <laforge@gnumonks.org> | 2011-06-27 11:25:35 +0200 |
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committer | Harald Welte <laforge@gnumonks.org> | 2011-06-27 11:25:35 +0200 |
commit | c6b4c87e5d57b91b29894835e7ac8e42f6e67f32 (patch) | |
tree | 2dfca5a61c881e88e6f29d03c29bb26e1c643332 /src/common/load_indication.c | |
parent | 8e47fb89bfd0e2b54b714393ac2a80ca76df56a9 (diff) |
re-work original osmo-bts with support for sysmocom femtobts
This code re-works osmo-bts to add support for the upcoming sysmocom BTS.
It also tries to add some level of abstraction between the generic
part of a BTS (A-bis, RSL, OML, data structures, paging scheduling,
BCCH/AGCH scheduling, etc.) and the actual hardware-specific bits.
The hardware-specific bits are currently only implemented for the sysmocom
femtobts, but should be (re-)added for osmocom-bb, as well as a virtual
BTS for simulation purpose later.
The sysmocom bts specific parts require hardware-specific header files
which are (at least currently) not publicly distributed.
Diffstat (limited to 'src/common/load_indication.c')
-rw-r--r-- | src/common/load_indication.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/common/load_indication.c b/src/common/load_indication.c new file mode 100644 index 00000000..12e41e43 --- /dev/null +++ b/src/common/load_indication.c @@ -0,0 +1,69 @@ +/* Support for generating RSL Load Indication */ + +/* (C) 2011 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 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 <rsl.h> + +#include <osmocom/core/timer.h> + +static void reset_load_counters(void) +{ + /* re-set the counters */ + btsb->load.ccch.pch_used = btsb->load.ccch.pch_total = 0; +} + +static void load_timer_cb(void *data) +{ + struct gsm_bts *bts = data; + struct gsm_bts_role_bts *btsb = FIXME; + unsigned int pch_percent; + + /* compute percentages */ + pch_percent = (btsb->load.ccch.pch_used * 100) / btsb->load.ccch.pch_total; + + if (pch_percent >= btsb->load.ccch.load_ind_thresh) { + /* send RSL load indication message to BSC */ + uint16_t paging_buffer_space = FIXME; + rsl_tx_ccch_load_ind_pch(bts, paging_buffer_space); + } + + reset_load_counters(); + + /* re-schedule the timer */ + osmo_timer_schedule(&btsb->load.ccch.timer, + btsb->load.ccch.load_ind_period, 0); +} + +static void load_timer_start(struct gsm_bts *bts) +{ + struct gsm_bts_role_bts *btsb = FIXME; + + btsb->load.ccch.timer.data = bts; + reset_load_counters(); + osmo_timer_schedule(&btsb->load.ccch.timer, + btsb->load.ccch.load_ind_period, 0); + + return 0 +} + +static void load_timer_stop(struct gsm_bts *bts) +{ + osmo_timer_del(&btsb->load.ccch.timer); +} |