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osmo-msc/include/openbsc/chan_alloc.h

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Add implementation to find a lchan by the struct gsm_subscriber Really compare pointers to check if the one gsm_subscriber is equal to the other... gsm_subscriber should be unique for a given IMSI so comparing the pointers should be fine.
2009-01-04 03:48:30 +00:00
/* 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
License change: We are now AGPLv3+ instead of GPLv2+ The reason for this is quite simple: We want to make sure anyone running a customized version of OpenBSC to operate a network will have to release all custom modifiations to the source code.
2011-01-01 14:25:50 +00:00
* 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
Add implementation to find a lchan by the struct gsm_subscriber Really compare pointers to check if the one gsm_subscriber is equal to the other... gsm_subscriber should be unique for a given IMSI so comparing the pointers should be fine.
2009-01-04 03:48:30 +00:00
* (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
License change: We are now AGPLv3+ instead of GPLv2+ The reason for this is quite simple: We want to make sure anyone running a customized version of OpenBSC to operate a network will have to release all custom modifiations to the source code.
2011-01-01 14:25:50 +00:00
* GNU Affero General Public License for more details.
Add implementation to find a lchan by the struct gsm_subscriber Really compare pointers to check if the one gsm_subscriber is equal to the other... gsm_subscriber should be unique for a given IMSI so comparing the pointers should be fine.
2009-01-04 03:48:30 +00:00
*
License change: We are now AGPLv3+ instead of GPLv2+ The reason for this is quite simple: We want to make sure anyone running a customized version of OpenBSC to operate a network will have to release all custom modifiations to the source code.
2011-01-01 14:25:50 +00:00
* 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/>.
Add implementation to find a lchan by the struct gsm_subscriber Really compare pointers to check if the one gsm_subscriber is equal to the other... gsm_subscriber should be unique for a given IMSI so comparing the pointers should be fine.
2009-01-04 03:48:30 +00:00
*
*/
no reasonable commit message possible. tons of changes of the last 2 days
2008-12-25 23:28:35 +00:00
#ifndef _CHAN_ALLOC_H
#define _CHAN_ALLOC_H
misc: Remove gsm_subscriber.h include to reduce dependencies.
2010-12-22 17:13:00 +00:00
#include "gsm_data.h"
Add implementation to find a lchan by the struct gsm_subscriber Really compare pointers to check if the one gsm_subscriber is equal to the other... gsm_subscriber should be unique for a given IMSI so comparing the pointers should be fine.
2009-01-04 03:48:30 +00:00
bsc_api: Rename lchan_for_subscr to connection_for_subscr and update code With handover and late/early assignment there might be two channels for one subscriber and only the BSC knows which one to use, so use the gsm_subscriber_connection everywhere...
2010-06-16 05:23:55 +00:00
struct gsm_subscriber_connection;
move search for existing lchan for subscriber to new function There's now a new function called 'lchan_for_subscr()' which can be used to determine if there is any existing lchan for this subscriber.
2009-08-09 16:52:33 +00:00
/* Find an allocated channel for a specified subscriber */
bsc_api: Rename lchan_for_subscr to connection_for_subscr and update code With handover and late/early assignment there might be two channels for one subscriber and only the BSC knows which one to use, so use the gsm_subscriber_connection everywhere...
2010-06-16 05:23:55 +00:00
struct gsm_subscriber_connection *connection_for_subscr(struct gsm_subscriber *subscr);
move search for existing lchan for subscriber to new function There's now a new function called 'lchan_for_subscr()' which can be used to determine if there is any existing lchan for this subscriber.
2009-08-09 16:52:33 +00:00
no reasonable commit message possible. tons of changes of the last 2 days
2008-12-25 23:28:35 +00:00
/* Allocate a logical channel (SDCCH, TCH, ...) */
[alloc] Assign a TCH for LU when all SDCCHs are occupied. When the cell becomes visible we will be bombed with location updating requests and to reduce the load on the network we should assign as many channels for it as possible. During load peek it is even more important than to have a spare voice channel and in general the LU procedure is pretty fast.
2010-09-06 00:58:42 +00:00
struct gsm_lchan *lchan_alloc(struct gsm_bts *bts, enum gsm_chan_t type, int allow_bigger);
no reasonable commit message possible. tons of changes of the last 2 days
2008-12-25 23:28:35 +00:00
/* Free a logical channel (SDCCH, TCH, ...) */
void lchan_free(struct gsm_lchan *lchan);
[bsc_init] When the RSL/OML connection drops, free all lchans Free all allocated channels on the TRX that failed, go through lchan_free to signal higher layers and then force a reset of the channel. Make the TRX and TS unusable by setting the operational set to 0 (not really defined) which should be reset once the RSL is coming up again.
2010-04-15 09:21:02 +00:00
void lchan_reset(struct gsm_lchan *lchan);
no reasonable commit message possible. tons of changes of the last 2 days
2008-12-25 23:28:35 +00:00
bsc_msc: Remove use_count from the subscriber connection A channel will be released in case of * Errors via the clear_request callback... * no more transactions and operations are going on. This means that if we do something without a transaction the channel might be closed down right away. The bug fix will be to create a transaction/operation.
2010-06-28 09:09:29 +00:00
/* Release the given lchan */
rsl: Rename the reason to release_mode and use the enum value The API with 0 and 1 as legal values is hard to understand. Use the recently introduced enum values instead.
2012-12-06 11:01:38 +00:00
int lchan_release(struct gsm_lchan *lchan, int sacch_deact, enum rsl_rel_mode release_mode);
Do not call rsl_chan_release directly but use the use_count of the lchan Call use_lchan early in allocate_loc_updating_req, do not directly call rsl_chan_release but go through channel alloc to take the use_count into account.
2009-01-01 03:46:11 +00:00
Display current channel usage load in 'show bts' and 'show network' This is just the load at one given instant. We definitely also want to see some averages and record the measurements in a database later.
2009-12-22 12:09:29 +00:00
struct load_counter {
unsigned int total;
unsigned int used;
};
struct pchan_load {
libbsc/chan_alloc: Fix size of pchan to hold the +CBCH channels as well show net with an CCCH+SDCCH/4+CBCH channel active caused bts_chan_load to read from invalid memory. Fix this by making sure the pchan array is large enough. ==30346==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fff9bdc5dc8 at pc 0x5aeece bp 0x7fff9bdc5350 sp 0x7fff9bdc5348 READ of size 4 at 0x7fff9bdc5dc8 thread T0 #0 0x5aeecd in bts_chan_load /home/alphaone/scm/osmo/openbsc/openbsc/src/libbsc/chan_alloc.c:490 #1 0x5af706 in network_chan_load /home/alphaone/scm/osmo/openbsc/openbsc/src/libbsc/chan_alloc.c:511 #2 0x4b7410 in net_dump_vty /home/alphaone/scm/osmo/openbsc/openbsc/src/libbsc/bsc_vty.c:208 #3 0x4b5f23 in show_net /home/alphaone/scm/osmo/openbsc/openbsc/src/libbsc/bsc_vty.c:227 #4 0x7fdabaa425bd in cmd_execute_command_real /home/alphaone/scm/osmo/libosmocore/src/vty/command.c:2042 #5 0x7fdabaa3f124 in cmd_execute_command /home/alphaone/scm/osmo/libosmocore/src/vty/command.c:2077 #6 0x7fdabaa850e9 in vty_command /home/alphaone/scm/osmo/libosmocore/src/vty/vty.c:402 #7 0x7fdabaa75962 in vty_execute /home/alphaone/scm/osmo/libosmocore/src/vty/vty.c:666 #8 0x7fdabaa6d947 in vty_read /home/alphaone/scm/osmo/libosmocore/src/vty/vty.c:1408 #9 0x7fdabaa9165f in client_data /home/alphaone/scm/osmo/libosmocore/src/vty/telnet_interface.c:119 #10 0x7fdaba7860b6 in osmo_select_main /home/alphaone/scm/osmo/libosmocore/src/select.c:160 #11 0x43c656 in main /home/alphaone/scm/osmo/openbsc/openbsc/src/osmo-nitb/bsc_hack.c:355 #12 0x7fdab92604bc (/lib64/libc.so.6+0x224bc) #13 0x43b6cc (/home/alphaone/local/osmo-asan/bin/osmo-nitb+0x43b6cc) Address 0x7fff9bdc5dc8 is located in stack of thread T0 at offset 232 in frame #0 0x4b5faf in net_dump_vty /home/alphaone/scm/osmo/openbsc/openbsc/src/libbsc/bsc_vty.c:182 This frame has 3 object(s): [32, 40) '' [96, 104) '' [160, 224) 'pl' HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext (longjmp and C++ exceptions *are* supported) SUMMARY: AddressSanitizer: stack-buffer-overflow /home/alphaone/scm/osmo/openbsc/openbsc/src/libbsc/chan_alloc.c:490 bts_chan_load
2014-12-30 11:15:08 +00:00
struct load_counter pchan[_GSM_PCHAN_MAX];
Display current channel usage load in 'show bts' and 'show network' This is just the load at one given instant. We definitely also want to see some averages and record the measurements in a database later.
2009-12-22 12:09:29 +00:00
};
Revert "bts: extend bts_chan_load to allow counting tch only" This reverts commit 308cb0719dca3ba8eed1eff2a2124d44f34d9a28. Problems in this commit: openbsc/src/libbsc/chan_alloc.c:523: case GSM_PCHAN_TCH_F_PDCH: This is actually wrong, GSM_PCHAN_TCH_F_PDCH use ts->flags, not ts->dyn below (due to historical reasons and could be unified). 560: if (only_count_tch && !chan_is_tch(ts)) This has exactly one effect: it excludes GSM_PCHAN_TCH_F_PDCH when in PDCH mode, because for all other PDCH (plain PDCH and TCH/F_TCH/H_PDCH in PDCH mode) below ts_subslots() returns 0 and skips the for() loop. I consider this a bug in TCH/F_PDCH, to be fixed in an upcoming commit. I don't see why we need the only_count_tch argument, because this should normally only count TCH, weren't it for the TCH/F_PDCH bug. If dyn TS should be counted differently, we should do this in a different way. Change-Id: I34dbbaf53a800115e3d03bd44028cad675f3b525
2016-09-25 15:01:20 +00:00
void bts_chan_load(struct pchan_load *cl, const struct gsm_bts *bts);
Display current channel usage load in 'show bts' and 'show network' This is just the load at one given instant. We definitely also want to see some averages and record the measurements in a database later.
2009-12-22 12:09:29 +00:00
void network_chan_load(struct pchan_load *pl, struct gsm_network *net);
export the 'trx_is_usable() function and use it from paging this ensures we don't send paging requests to currently inactive transceivers.
2009-12-28 15:36:28 +00:00
int trx_is_usable(struct gsm_bts_trx *trx);
no reasonable commit message possible. tons of changes of the last 2 days
2008-12-25 23:28:35 +00:00
#endif /* _CHAN_ALLOC_H */