1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
/* Management functions to allocate/release struct gsm_lchan */
/* (C) 2008 by Harald Welte <laforge@gnumonks.org>
* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
* All Rights Reserved
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#ifndef _CHAN_ALLOC_H
#define _CHAN_ALLOC_H
#include "gsm_subscriber.h"
/*
* Refcounting for the lchan. If the refcount drops to zero
* the channel will send a RSL release request.
*/
#define use_subscr_con(con) \
do { (con)->use_count++; \
DEBUGP(DREF, "lchan (bts=%d,trx=%d,ts=%d,ch=%d) increases usage to: %d\n", \
(con)->lchan->ts->trx->bts->nr, (con)->lchan->ts->trx->nr, (con)->lchan->ts->nr, \
(con)->lchan->nr, (con)->use_count); \
} while(0);
#define put_subscr_con(con, reason) \
do { (con)->use_count--; \
DEBUGP(DREF, "lchan (bts=%d,trx=%d,ts=%d,ch=%d) decreases usage to: %d\n", \
(con)->lchan->ts->trx->bts->nr, (con)->lchan->ts->trx->nr, (con)->lchan->ts->nr, \
(con)->lchan->nr, (con)->use_count); \
if ((con)->use_count <= 0) \
_lchan_release((con)->lchan, reason); \
} while(0);
/* Special allocator for C0 of BTS */
struct gsm_bts_trx_ts *ts_c0_alloc(struct gsm_bts *bts,
enum gsm_phys_chan_config pchan);
/* Regular physical channel allocator */
struct gsm_bts_trx_ts *ts_alloc(struct gsm_bts *bts,
enum gsm_phys_chan_config pchan);
/* Regular physical channel (TS) */
void ts_free(struct gsm_bts_trx_ts *ts);
/* Find an allocated channel */
struct gsm_lchan *lchan_find(struct gsm_bts *bts, struct gsm_subscriber *subscr);
/* Find an allocated channel for a specified subscriber */
struct gsm_lchan *lchan_for_subscr(struct gsm_subscriber *subscr);
/* Allocate a logical channel (SDCCH, TCH, ...) */
struct gsm_lchan *lchan_alloc(struct gsm_bts *bts, enum gsm_chan_t type);
/* Free a logical channel (SDCCH, TCH, ...) */
void lchan_free(struct gsm_lchan *lchan);
/* internal.. do not use */
int _lchan_release(struct gsm_lchan *lchan, u_int8_t release_reason);
struct load_counter {
unsigned int total;
unsigned int used;
};
struct pchan_load {
struct load_counter pchan[GSM_PCHAN_UNKNOWN];
};
void bts_chan_load(struct pchan_load *cl, const struct gsm_bts *bts);
void network_chan_load(struct pchan_load *pl, struct gsm_network *net);
int trx_is_usable(struct gsm_bts_trx *trx);
#endif /* _CHAN_ALLOC_H */
|
