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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.
This commit is contained in:
Harald Welte 2011-06-27 11:25:35 +02:00
parent 8e47fb89bf
commit c6b4c87e5d
46 changed files with 5390 additions and 815 deletions
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*.o
*.a
Makefile.in
Makefile
.deps
aclocal.m4
autom4te.cache
config.log
config.status
configure
depcomp
install-sh
missing
core
core.*
src/osmo-bts-sysmo/l1fwd-proxy
src/osmo-bts-sysmo/sysmobts
src/osmo-bts-sysmo/sysmobts-remote

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If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source. For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<http://www.gnu.org/licenses/>.

0
READKE → README
View File

2
configure.ac
View File

@ -15,6 +15,7 @@ AC_PROG_RANLIB
dnl checks for libraries
PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore)
PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty)
PKG_CHECK_MODULES(LIBOSMOGSM, libosmogsm)
dnl checks for header files
AC_HEADER_STDC
@ -24,6 +25,7 @@ dnl Checks for typedefs, structures and compiler characteristics
AC_OUTPUT(
src/Makefile
src/common/Makefile
src/osmo-bts-sysmo/Makefile
src/osmo-bts-bb/Makefile
include/Makefile
include/osmo-bts/Makefile

1
include/openbsc/gsm_data.h Symbolic link
View File

@ -0,0 +1 @@
../osmo-bts/gsm_data.h

2
include/osmo-bts/Makefile.am
View File

@ -1 +1 @@
noinst_HEADERS = bts.h abis.h rsl.h oml.h support.h rtp.h logging.h
noinst_HEADERS = abis.h bts.h bts_model.h gsm_data.h logging.h oml.h paging.h rsl.h rtp.h signal.h vty.h

10
include/osmo-bts/abis.h
View File

@ -5,13 +5,15 @@
#include <osmocom/core/timer.h>
#include <osmocom/gsm/protocol/ipaccess.h>
#include <osmo-bts/gsm_data.h>
#define OML_RETRY_TIMER 5
#define OML_PING_TIMER 20
struct ipabis_link {
int state;
struct osmocom_bts *bts; /* set, if OML link */
struct osmobts_trx *trx; /* set, if RSL link */
struct gsm_bts *bts; /* set, if OML link */
struct gsm_bts_trx *trx; /* set, if RSL link */
struct osmo_fd bfd;
struct osmo_timer_list timer;
struct msgb *rx_msg;
@ -33,4 +35,8 @@ void abis_push_ipa(struct msgb *msg, uint8_t proto);
int abis_open(struct ipabis_link *link, uint32_t ip);
void abis_close(struct ipabis_link *link);
int abis_oml_sendmsg(struct msgb *msg);
int abis_rsl_sendmsg(struct msgb *msg);
#endif /* _ABIS_H */

139
include/osmo-bts/bts.h
View File

@ -1,132 +1,29 @@
#ifndef _BTS_H
#define _BTS_H
#define BTS_SI_NUM 23 /* MUAR match the entries in BTS_SI_LIST */
#include <osmo-bts/gsm_data.h>
#define BTS_SI_LIST { \
RSL_SYSTEM_INFO_8, \
RSL_SYSTEM_INFO_1, \
RSL_SYSTEM_INFO_2, \
RSL_SYSTEM_INFO_3, \
RSL_SYSTEM_INFO_4, \
RSL_SYSTEM_INFO_5, \
RSL_SYSTEM_INFO_6, \
RSL_SYSTEM_INFO_7, \
RSL_SYSTEM_INFO_16, \
RSL_SYSTEM_INFO_17, \
RSL_SYSTEM_INFO_2bis, \
RSL_SYSTEM_INFO_2ter, \
RSL_SYSTEM_INFO_5bis, \
RSL_SYSTEM_INFO_5ter, \
RSL_SYSTEM_INFO_10, \
REL_EXT_MEAS_ORDER, \
RSL_MEAS_INFO, \
RSL_SYSTEM_INFO_13, \
RSL_SYSTEM_INFO_2quater, \
RSL_SYSTEM_INFO_9, \
RSL_SYSTEM_INFO_18, \
RSL_SYSTEM_INFO_19, \
RSL_SYSTEM_INFO_20, \
}
extern void *tall_bts_ctx;
#define BTS_SI_NAME char *bts_si_name[] = { \
"RSL_SYSTEM_INFO_8", \
"RSL_SYSTEM_INFO_1", \
"RSL_SYSTEM_INFO_2", \
"RSL_SYSTEM_INFO_3", \
"RSL_SYSTEM_INFO_4", \
"RSL_SYSTEM_INFO_5", \
"RSL_SYSTEM_INFO_6", \
"RSL_SYSTEM_INFO_7", \
"RSL_SYSTEM_INFO_16", \
"RSL_SYSTEM_INFO_17", \
"RSL_SYSTEM_INFO_2bis", \
"RSL_SYSTEM_INFO_2ter", \
"RSL_SYSTEM_INFO_5bis", \
"RSL_SYSTEM_INFO_5ter", \
"RSL_SYSTEM_INFO_10", \
"REL_EXT_MEAS_ORDER", \
"RSL_MEAS_INFO", \
"RSL_SYSTEM_INFO_13", \
"RSL_SYSTEM_INFO_2quater", \
"RSL_SYSTEM_INFO_9", \
"RSL_SYSTEM_INFO_18", \
"RSL_SYSTEM_INFO_19", \
"RSL_SYSTEM_INFO_20", \
}
int bts_init(struct gsm_bts *bts);
#define BTS_SI_USE 1
#define BTS_SI_NEW 2
/* store sysinfos of a BTS */
struct osmobts_sysinfo {
uint8_t flags[BTS_SI_NUM];
uint8_t si[BTS_SI_NUM][23];
struct osmo_timer_list timer;
};
struct osmobts_slot;
/* one physical radio */
struct osmobts_ms {
struct llist_head entry;
struct osmobts_trx *trx;
};
/* one logical channel instance */
struct osmobts_lchan {
struct osmobts_slot *slot;
uint8_t lchan_nr;
uint8_t chan_nr; /* CBITS+TN */
struct lapdm_channel lapdm_channel;
struct osmobts_rtp rtp;
};
/* one timeslot instance */
struct osmobts_slot {
struct osmobts_trx *trx;
uint8_t slot_nr;
uint8_t acch_type; /* TS 08.58 9.3.1 (bits 8..4) */
uint8_t has_bcch;
uint8_t chan_comb;
struct osmobts_lchan *lchan[8];
struct osmobts_ms *tx_ms, *rx_ms;
};
/* one TRX instance */
struct osmobts_trx {
struct osmocom_bts *bts;
uint8_t trx_nr;
struct osmobts_slot slot[8];
struct llist_head ms_list;
struct ipabis_link link;
struct osmobts_sysinfo si;
uint8_t rf_red;
uint16_t arfcn_list[128];
int arfcn_num;
};
/* the BTS instance */
struct osmocom_bts {
char *id;
uint8_t num_trx;
struct osmobts_trx *trx[8];
struct ipabis_link link;
uint8_t max_ta;
uint16_t bcch_arfcn;
uint8_t bcc, ncc;
uint16_t start_time;
};
struct osmocom_bts *create_bts(uint8_t num_trx, char *id);
int create_ms(struct osmobts_trx *trx, int maskc, uint8_t *maskv_tx,
struct gsm_bts *create_bts(uint8_t num_trx, char *id);
int create_ms(struct gsm_bts_trx *trx, int maskc, uint8_t *maskv_tx,
uint8_t *maskv_rx);
void destroy_bts(struct osmocom_bts *bts);
int work_bts(struct osmocom_bts *bts);
int bts_link_estab(struct osmocom_bts *bts);
int trx_link_estab(struct osmobts_trx *trx);
void destroy_bts(struct gsm_bts *bts);
int work_bts(struct gsm_bts *bts);
int bts_link_estab(struct gsm_bts *bts);
int trx_link_estab(struct gsm_bts_trx *trx);
void bts_new_si(void *arg);
void bts_setup_slot(struct osmobts_slot *slot, uint8_t comb);
void bts_setup_slot(struct gsm_bts_trx_ts *slot, uint8_t comb);
int lchan_init_lapdm(struct gsm_lchan *lchan);
int bts_agch_enqueue(struct gsm_bts *bts, struct msgb *msg);
struct msgb *bts_agch_dequeue(struct gsm_bts *bts);
uint8_t *bts_sysinfo_get(struct gsm_bts *bts, struct gsm_time *g_time);
uint8_t *lchan_sacch_get(struct gsm_lchan *lchan, struct gsm_time *g_time);
#endif /* _BTS_H */

33
include/osmo-bts/bts_model.h Normal file
View File

@ -0,0 +1,33 @@
#ifndef BTS_MODEL_H
#define BTS_MODEL_H
#include <stdint.h>
#include <osmocom/gsm/tlv.h>
#include <osmocom/gsm/gsm_utils.h>
#include <osmo-bts/gsm_data.h>
/* BTS model specific functions needed by the common code */
int bts_model_init(struct gsm_bts *bts);
struct gsm_time *bts_model_get_time(struct gsm_bts *bts);
int bts_model_check_oml(struct gsm_bts *bts, uint8_t msg_type,
struct tlv_parsed *old_attr, struct tlv_parsed *new_attr,
void *obj);
int bts_model_apply_oml(struct gsm_bts *bts, struct msgb *msg,
struct tlv_parsed *new_attr, void *obj);
int bts_model_opstart(struct gsm_bts *bts, struct gsm_abis_mo *mo,
void *obj);
int bts_model_chg_adm_state(struct gsm_bts *bts, struct gsm_abis_mo *mo,
void *obj, uint8_t adm_state);
int bts_model_rsl_chan_act(struct gsm_lchan *lchan, struct tlv_parsed *tp);
int bts_model_rsl_chan_rel(struct gsm_lchan *lchan);
#endif

57
include/osmo-bts/gsm_data.h Normal file
View File

@ -0,0 +1,57 @@
#ifndef _GSM_DATA_H
#define _GSM_DATA_H
#include <osmocom/core/timer.h>
#include <osmocom/core/linuxlist.h>
#include <osmocom/gsm/lapdm.h>
#include <osmo-bts/paging.h>
struct gsm_network {
};
/* data structure for BTS related data specific to the BTS role */
struct gsm_bts_role_bts {
struct {
/* Interference Boundaries for OML */
int16_t boundary[6];
uint8_t intave;
} interference;
unsigned int t200_ms[7];
unsigned int t3105_ms;
struct {
uint8_t overload_period;
struct {
/* Input parameters from OML */
uint8_t load_ind_thresh; /* percent */
uint8_t load_ind_period; /* seconds */
/* Internal data */
struct osmo_timer_list timer;
unsigned int pch_total;
unsigned int pch_used;
} ccch;
struct {
/* Input parameters from OML */
int16_t busy_thresh; /* in dBm */
uint16_t averaging_slots;
} rach;
} load;
uint8_t ny1;
uint8_t max_ta;
struct llist_head agch_queue;
struct paging_state *paging_state;
};
#define bts_role_bts(x) ((struct gsm_bts_role_bts *)(x)->role)
#include "../../openbsc/openbsc/include/openbsc/gsm_data_shared.h"
struct femtol1_hdl;
static inline struct femtol1_hdl *trx_femtol1_hdl(struct gsm_bts_trx *trx)
{
return trx->role_bts.l1h;
}
#endif /* _GSM_DATA_H */

10
include/osmo-bts/logging.h
View File

@ -9,19 +9,17 @@ enum {
DOML,
DRLL,
DRR,
DMM,
DCC,
DSMS,
DMEAS,
DPAG,
DLAPDM,
DL1C,
DSAP,
DL1P,
DABIS,
DRTP,
DSUM,
};
extern const struct log_info log_info;
extern const struct log_info bts_log_info;
int bts_log_init(const char *category_mask);
#endif /* _LOGGING_H */

20
include/osmo-bts/oml.h
View File

@ -1,9 +1,21 @@
#ifndef _OML_H
#define _OML_H
int down_oml(struct osmocom_bts *bts, struct msgb *msg);
int oml_tx_sw_act_rep(struct ipabis_link *link, uint8_t obj_class, uint8_t bts_nr, uint8_t trx_nr, uint8_t ts_nr);
int oml_tx_state_changed(struct ipabis_link *link, uint8_t op_state, uint8_t avail_status, uint8_t obj_class, uint8_t bts_nr, uint8_t trx_nr, uint8_t ts_nr);
int oml_init(void);
int down_oml(struct gsm_bts *bts, struct msgb *msg);
struct msgb *oml_msgb_alloc(void);
int oml_send_msg(struct msgb *msg, int is_mauf);
int oml_mo_send_msg(struct gsm_abis_mo *mo, struct msgb *msg, uint8_t msg_type);
int oml_mo_opstart_ack(struct gsm_abis_mo *mo);
int oml_mo_opstart_nack(struct gsm_abis_mo *mo, uint8_t nack_cause);
int oml_mo_state_chg(struct gsm_abis_mo *mo, int op_state, int avail_state);
int oml_mo_tx_sw_act_rep(struct gsm_abis_mo *mo);
int oml_fom_ack_nack(struct msgb *old_msg, uint8_t cause);
int oml_mo_fom_ack_nack(struct gsm_abis_mo *mo, uint8_t orig_msg_type,
uint8_t cause);
#endif // _OML_H */

24
include/osmo-bts/paging.h Normal file
View File

@ -0,0 +1,24 @@
#ifndef OSMO_BTS_PAGING_H
#define OSMO_BTS_PAGING_H
#include <stdint.h>
#include <osmocom/gsm/gsm_utils.h>
#include <osmocom/gsm/protocol/gsm_04_08.h>
struct paging_state;
/* initialize paging code */
struct paging_state *paging_init(void *ctx, unsigned int num_paging_max,
unsigned int paging_lifetime);
/* update with new SYSTEM INFORMATION parameters */
int paging_si_update(struct paging_state *ps, struct gsm48_control_channel_descr *chan_desc);
/* Add an identity to the paging queue */
int paging_add_identity(struct paging_state *ps, uint8_t paging_group,
const uint8_t *identity_lv, uint8_t chan_needed);
/* generate paging message for given gsm time */
int paging_gen_msg(struct paging_state *ps, uint8_t *out_buf, struct gsm_time *gt);
#endif

21
include/osmo-bts/rsl.h
View File

@ -1,12 +1,21 @@
#ifndef _RSL_H
#define _RSL_H
int down_rsl(struct osmobts_trx *trx, struct msgb *msg);
int rsl_tx_rf_res(struct osmobts_trx *trx);
int rsl_tx_chan_rqd(struct osmobts_trx *trx);
int rsl_tx_est_ind(struct osmobts_lchan *lchan, uint8_t link_id, uint8_t *data, int len);
int rsl_tx_rll(struct msgb *msg, struct osmol2_entity *l2_entity);
int rsl_tx_ipac_dlcx_ind(struct osmobts_lchan *lchan, uint8_t cause);
int down_rsl(struct gsm_bts_trx *trx, struct msgb *msg);
int rsl_tx_rf_res(struct gsm_bts_trx *trx);
int rsl_tx_chan_rqd(struct gsm_bts_trx *trx, struct gsm_time *gtime,
uint8_t ra, uint8_t acc_delay);
int rsl_tx_est_ind(struct gsm_lchan *lchan, uint8_t link_id, uint8_t *data, int len);
int rsl_tx_chan_act_ack(struct gsm_lchan *lchan, struct gsm_time *gtime);
int rsl_tx_rf_rel_ack(struct gsm_lchan *lchan);
/* call-back for LAPDm code, called when it wants to send msgs UP */
int lapdm_rll_tx_cb(struct msgb *msg, struct lapdm_entity *le, void *ctx);
int rsl_tx_ipac_dlcx_ind(struct gsm_lchan *lchan, uint8_t cause);
struct gsm_lchan *rsl_lchan_lookup(struct gsm_bts_trx *trx, uint8_t chan_nr);
#endif // _RSL_H */

14
include/osmo-bts/signal.h Normal file
View File

@ -0,0 +1,14 @@
#ifndef OSMO_BTS_SIGNAL_H
#define OSMO_BTS_SIGNAL_H
#include <osmocom/core/signal.h>
enum sig_subsys {
SS_GLOBAL,
};
enum signals_global {
S_NEW_SYSINFO,
};
#endif

30
include/osmo-bts/support.h
View File

@ -1,30 +0,0 @@
#ifndef _BTS_SUPPORT_H
#define _BTS_SUPPORT_H
struct bts_support {
/* crypto supprot */
uint8_t a5_1;
uint8_t a5_2;
uint8_t a5_3;
uint8_t a5_4;
uint8_t a5_5;
uint8_t a5_6;
uint8_t a5_7;
/* radio support */
uint8_t freq_map[128];
/* codecs */
uint8_t chan_comb[256];
uint8_t full_v1;
uint8_t full_v2;
uint8_t full_v3;
uint8_t half_v1;
uint8_t half_v3;
};
extern struct bts_support bts_support;
void bts_support_init(void);
char *bts_support_comb_name(uint8_t chan_comb);
#endif /* _SUPPORT_H */

22
include/osmo-bts/vty.h Normal file
View File

@ -0,0 +1,22 @@
#ifndef OSMOBTS_VTY_H
#define OSMOBTS_VTY_H
#include <osmocom/vty/vty.h>
#include <osmocom/vty/command.h>
enum bts_vty_node {
BTS_NODE = _LAST_OSMOVTY_NODE + 1,
TRX_NODE,
TS_NODE,
LCHAN_NODE,
};
extern struct cmd_element ournode_exit_cmd;
extern struct cmd_element ournode_end_cmd;
enum node_type bts_vty_go_parent(struct vty *vty);
int bts_vty_is_config_node(struct vty *vty, int node);
extern struct vty_app_info bts_vty_info;
#endif

2
src/Makefile.am
View File

@ -1 +1 @@
SUBDIRS = common osmo-bts-bb
SUBDIRS = common osmo-bts-sysmo #osmo-bts-bb

4
src/common/Makefile.am
View File

@ -3,5 +3,5 @@ AM_CFLAGS = -Wall $(LIBOSMOCORE_CFLAGS)
LDADD = $(LIBOSMOCORE_LIBS)
noinst_LIBRARIES = libbts.a
libbts_a_SOURCES = support.c bts.c abis.c rsl.c oml.c rtp.c
# ../common/l1l2_interface.c ../common/lapdm.c ../common/logging.c
libbts_a_SOURCES = gsm_data_shared.c sysinfo.c logging.c abis.c oml.c bts.c rsl.c vty.c paging.c
#support.c rtp.c

144
src/common/abis.c
View File

@ -1,10 +1,14 @@
/* Minimalistic Abis/IP interface routines, soon to be replaced by
* libosmo-abis (Pablo) */
/* (C) 2011 by Andreas Eversberg <jolly@eversberg.eu>
* (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 General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* 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,
@ -12,9 +16,8 @@
* 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.
* 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/>.
*
*/
@ -27,16 +30,20 @@
#include <errno.h>
#include <string.h>
#include <osmocore/select.h>
#include <osmocore/timer.h>
#include <osmocore/msgb.h>
#include <osmocom/bb/common/logging.h>
#include <osmocom/bb/common/osmocom_data.h>
#include <osmocom/bb/bts/abis.h>
#include <osmocom/core/select.h>
#include <osmocom/core/timer.h>
#include <osmocom/core/msgb.h>
#include <osmocom/gsm/protocol/ipaccess.h>
#include <osmo-bts/logging.h>
#include <osmo-bts/gsm_data.h>
#include <osmo-bts/abis.h>
#include <osmo-bts/bts.h>
#include <osmo-bts/rsl.h>
#include <osmo-bts/oml.h>
#if 0
#include <osmocom/bb/bts/rtp.h>
#include <osmocom/bb/bts/bts.h>
#include <osmocom/bb/bts/rsl.h>
#include <osmocom/bb/bts/oml.h>
#endif
extern char *software_version;
extern uint8_t abis_mac[6];
@ -61,6 +68,23 @@ int abis_tx(struct ipabis_link *link, struct msgb *msg)
return 0;
}
int abis_oml_sendmsg(struct msgb *msg)
{
struct gsm_bts *bts = msg->trx->bts;
abis_push_ipa(msg, 0xff);
return abis_tx((struct ipabis_link *) bts->oml_link, msg);
}
int abis_rsl_sendmsg(struct msgb *msg)
{
struct gsm_bts_trx *trx = msg->trx;
abis_push_ipa(msg, 0);
return abis_tx((struct ipabis_link *) trx->rsl_link, msg);
}
struct msgb *abis_msgb_alloc(int headroom)
{
@ -98,7 +122,7 @@ static int abis_tx_ipa_pingpong(struct ipabis_link *link, uint8_t pingpong)
if (!nmsg)
return -ENOMEM;
*msgb_put(nmsg, 1) = pingpong;
abis_push_ipa(nmsg, IPA_PROTO_IPACCESS);
abis_push_ipa(nmsg, IPAC_PROTO_IPACCESS);
return abis_tx(link, nmsg);
}
@ -106,16 +130,20 @@ static int abis_tx_ipa_pingpong(struct ipabis_link *link, uint8_t pingpong)
/* send ACK and ID RESP */
static int abis_rx_ipa_id_get(struct ipabis_link *link, uint8_t *data, int len)
{
struct gsm_bts *bts = link->bts;
struct msgb *nmsg, *nmsg2;
char str[64];
uint8_t *tag;
if (!link->bts)
bts = link->trx->bts;
LOGP(DABIS, LOGL_INFO, "Reply to ID_GET\n");
nmsg = abis_msgb_alloc(0);
if (!nmsg)
return -ENOMEM;
*msgb_put(nmsg, 1) = IPA_MSGT_ID_RESP;
*msgb_put(nmsg, 1) = IPAC_MSGT_ID_RESP;
while (len) {
if (len < 2) {
LOGP(DABIS, LOGL_NOTICE,
@ -124,32 +152,33 @@ static int abis_rx_ipa_id_get(struct ipabis_link *link, uint8_t *data, int len)
return -EIO;
}
switch (data[1]) {
case IPA_IDTAG_UNIT:
sprintf(str, "%s/%d", (link->trx) ? link->trx->bts->id
: link->bts->id,
(link->trx) ? link->trx->trx_nr : 0);
case IPAC_IDTAG_UNIT:
sprintf(str, "%u/%u/%u",
bts->ip_access.site_id,
bts->ip_access.bts_id,
(link->trx) ? link->trx->nr : 0);
break;
case IPA_IDTAG_MACADDR:
case IPAC_IDTAG_MACADDR:
sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
abis_mac[0], abis_mac[1], abis_mac[2],
abis_mac[3], abis_mac[4], abis_mac[5]);
break;
case IPA_IDTAG_LOCATION1:
case IPAC_IDTAG_LOCATION1:
strcpy(str, "osmoBTS");
break;
case IPA_IDTAG_LOCATION2:
case IPAC_IDTAG_LOCATION2:
strcpy(str, "osmoBTS");
break;
case IPA_IDTAG_EQUIPVERS:
case IPA_IDTAG_SWVERSION:
case IPAC_IDTAG_EQUIPVERS:
case IPAC_IDTAG_SWVERSION:
strcpy(str, software_version);
break;
case IPA_IDTAG_UNITNAME:
case IPAC_IDTAG_UNITNAME:
sprintf(str, "osmoBTS-%02x-%02x-%02x-%02x-%02x-%02x",
abis_mac[0], abis_mac[1], abis_mac[2],
abis_mac[3], abis_mac[4], abis_mac[5]);
break;
case IPA_IDTAG_SERNR:
case IPAC_IDTAG_SERNR:
strcpy(str, "");
break;
default:
@ -167,15 +196,15 @@ static int abis_rx_ipa_id_get(struct ipabis_link *link, uint8_t *data, int len)
data += 2;
len -= 2;
}
abis_push_ipa(nmsg, IPA_PROTO_IPACCESS);
abis_push_ipa(nmsg, IPAC_PROTO_IPACCESS);
nmsg2 = abis_msgb_alloc(0);
if (!nmsg2) {
msgb_free(nmsg);
return -ENOMEM;
}
*msgb_put(nmsg2, 1) = IPA_MSGT_ID_ACK;
abis_push_ipa(nmsg2, IPA_PROTO_IPACCESS);
*msgb_put(nmsg2, 1) = IPAC_MSGT_ID_ACK;
abis_push_ipa(nmsg2, IPAC_PROTO_IPACCESS);
link->id_resp = 1;
@ -196,21 +225,23 @@ static int abis_rx_ipaccess(struct ipabis_link *link, struct msgb *msg)
}
switch (*data) {
case IPA_MSGT_PONG:
case IPAC_MSGT_PONG:
#if 0
#warning HACK
rsl_tx_chan_rqd(link->bts->trx[0]);
LOGP(DABIS, LOGL_INFO, "PONG\n");
#endif
LOGP(DABIS, LOGL_DEBUG, "PONG\n");
link->pong = 1;
break;
case IPA_MSGT_PING:
LOGP(DABIS, LOGL_INFO, "reply to ping request\n");
ret = abis_tx_ipa_pingpong(link, IPA_MSGT_PONG);
case IPAC_MSGT_PING:
LOGP(DABIS, LOGL_DEBUG, "reply to ping request\n");
ret = abis_tx_ipa_pingpong(link, IPAC_MSGT_PONG);
break;
case IPA_MSGT_ID_GET:
case IPAC_MSGT_ID_GET:
ret = abis_rx_ipa_id_get(link, data + 1, len - 1);
break;
case IPA_MSGT_ID_ACK:
LOGP(DABIS, LOGL_INFO, "ID ACK\n");
case IPAC_MSGT_ID_ACK:
LOGP(DABIS, LOGL_DEBUG, "ID ACK\n");
if (link->id_resp && link->bts)
ret = bts_link_estab(link->bts);
if (link->id_resp && link->trx)
@ -240,7 +271,7 @@ static int abis_rx(struct ipabis_link *link, struct msgb *msg)
int ret = 0;
switch (hh->proto) {
case IPA_PROTO_RSL:
case IPAC_PROTO_RSL:
if (!link->trx) {
LOGP(DABIS, LOGL_NOTICE,
"Received RSL message not on RSL link\n");
@ -248,16 +279,17 @@ static int abis_rx(struct ipabis_link *link, struct msgb *msg)
ret = EIO;
break;
}
msg->trx = link->trx;
ret = down_rsl(link->trx, msg);
break;
case IPA_PROTO_IPACCESS:
case IPAC_PROTO_IPACCESS:
ret = abis_rx_ipaccess(link, msg);
break;
case IPA_PROTO_SCCP:
case IPAC_PROTO_SCCP:
LOGP(DABIS, LOGL_INFO, "Received SCCP message\n");
msgb_free(msg);
break;
case IPA_PROTO_OML:
case IPAC_PROTO_OML:
if (!link->bts) {
LOGP(DABIS, LOGL_NOTICE,
"Received OML message not on OML link\n");
@ -265,6 +297,7 @@ static int abis_rx(struct ipabis_link *link, struct msgb *msg)
ret = EIO;
break;
}
msg->trx = link->bts->c0;
ret = down_oml(link->bts, msg);
break;
default:
@ -302,8 +335,8 @@ static void abis_timeout(void *arg)
}
link->ping = 1;
link->pong = 0;
LOGP(DABIS, LOGL_INFO, "PING\n");
abis_tx_ipa_pingpong(link, IPA_MSGT_PING);
LOGP(DABIS, LOGL_DEBUG, "PING\n");
abis_tx_ipa_pingpong(link, IPAC_MSGT_PING);
osmo_timer_schedule(&link->timer, OML_PING_TIMER, 0);
break;
}
@ -348,7 +381,7 @@ static int abis_sock_cb(struct osmo_fd *bfd, unsigned int what)
return 0;
msg->l2h = msg->data + sizeof(*hh);
if (ntohs(hh->len) > msgb_tailroom(msg)) {
LOGP(DABIS, LOGL_NOTICE, "Received packet from "
LOGP(DABIS, LOGL_DEBUG, "Received packet from "
"Abis socket too large.\n");
goto close;
}
@ -363,13 +396,13 @@ static int abis_sock_cb(struct osmo_fd *bfd, unsigned int what)
if (ntohs(hh->len) + sizeof(*hh) > msg->len)
return 0;
link->rx_msg = NULL;
LOGP(DABIS, LOGL_INFO, "Received messages from Abis socket.\n");
LOGP(DABIS, LOGL_DEBUG, "Received messages from Abis socket.\n");
ret = abis_rx(link, msg);
}
if ((what & BSC_FD_WRITE)) {
msg = msgb_dequeue(&link->tx_queue);
if (msg) {
LOGP(DABIS, LOGL_INFO, "Sending messages to Abis socket.\n");
LOGP(DABIS, LOGL_DEBUG, "Sending messages to Abis socket.\n");
ret = send(link->bfd.fd, msg->data, msg->len, 0);
if (ret < 0)
goto close;
@ -377,7 +410,7 @@ static int abis_sock_cb(struct osmo_fd *bfd, unsigned int what)
link->bfd.when &= ~BSC_FD_WRITE;
}
if ((what & BSC_FD_EXCEPT)) {
LOGP(DABIS, LOGL_INFO, "Abis socket received exception\n");
LOGP(DABIS, LOGL_NOTICE, "Abis socket received exception\n");
goto close;
}
@ -388,11 +421,11 @@ close:
/* RSL link will just close and BSC is notified */
if (link->trx) {
LOGP(DABIS, LOGL_INFO, "Connection to BSC failed\n");
LOGP(DABIS, LOGL_NOTICE, "Connection to BSC failed\n");
return trx_link_estab(link->trx);
}
LOGP(DABIS, LOGL_INFO, "Connection to BSC failed, retrying in %d "
LOGP(DABIS, LOGL_NOTICE, "Connection to BSC failed, retrying in %d "
"seconds.\n", OML_RETRY_TIMER);
osmo_timer_schedule(&link->timer, OML_RETRY_TIMER, 0);
link->state = LINK_STATE_RETRYING;
@ -407,6 +440,8 @@ int abis_open(struct ipabis_link *link, uint32_t ip)
int sock;
int ret;
oml_init();
if (link->bfd.fd > 0)
return -EBUSY;
@ -455,18 +490,11 @@ int abis_open(struct ipabis_link *link, uint32_t ip)
void abis_close(struct ipabis_link *link)
{
struct msgb *msg;
int i;
if (link->bfd.fd <= 0)
return;
LOGP(DABIS, LOGL_INFO, "Abis socket closed.\n");
#warning if any link fails, shutdown all links
if (link->trx) {
for (i = 0; i < 8; i++)
bts_setup_slot(&link->trx->slot[i], 0xff);
}
LOGP(DABIS, LOGL_NOTICE, "Abis socket closed.\n");
if (link->rx_msg) {
msgb_free(link->rx_msg);

155
src/common/bts.c
View File

@ -1,10 +1,13 @@
/* BTS support code common to all supported BTS models */
/* (C) 2011 by Andreas Eversberg <jolly@eversberg.eu>
* (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 General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* 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,
@ -12,9 +15,8 @@
* 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.
* 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/>.
*
*/
@ -29,23 +31,30 @@
#include <osmocom/core/msgb.h>
#include <osmocom/core/talloc.h>
#include <osmocom/gsm/protocol/gsm_12_21.h>
#include <osmocom/gsm/lapdm.h>
#include <osmo-bts/logging.h>
//#include <osmocom/bb/common/osmocom_data.h>
//#include <osmocom/bb/common/l1l2_interface.h>
#include <osmo-bts/abis.h>
#include <osmo-bts/rtp.h>
#include <osmo-bts/bts.h>
#include <osmo-bts/rsl.h>
#include <osmo-bts/oml.h>
extern void *l23_ctx;
extern uint8_t cr_loc2rem_cmd;
extern uint8_t cr_loc2rem_resp;
extern uint8_t cr_rem2loc_cmd;
extern uint8_t cr_rem2loc_resp;
void *tall_bts_ctx;
BTS_SI_NAME;
int bts_init(struct gsm_bts *bts)
{
struct gsm_bts_role_bts *btsb;
bts->role = btsb = talloc_zero(bts, struct gsm_bts_role_bts);
INIT_LLIST_HEAD(&btsb->agch_queue);
/* FIXME: make those parameters configurable */
btsb->paging_state = paging_init(btsb, 200, 0);
return bts_model_init(bts);
}
#if 0
struct osmobts_lchan *lchan_by_channelnr(struct osmobts_trx *trx,
@ -88,7 +97,6 @@ struct osmobts_lchan *lchan_by_channelnr(struct osmobts_trx *trx,
return NULL;
}
#endif
struct osmocom_bts *create_bts(uint8_t num_trx, char *id)
{
@ -267,45 +275,33 @@ void destroy_bts(struct osmocom_bts *bts)
abis_close(&bts->link);
talloc_free(bts);
}
#endif
/* main link is established, send status report */
int bts_link_estab(struct osmocom_bts *bts)
int bts_link_estab(struct gsm_bts *bts)
{
int i, j;
uint8_t radio_state;
LOGP(DSUM, LOGL_INFO, "Main link established, sending Status'.\n");
/* site-manager status */
oml_tx_state_changed(&bts->link, NM_OPSTATE_ENABLED, NM_AVSTATE_OK,
NM_OC_SITE_MANAGER, 0xff, 0xff, 0xff);
/* bts status */
oml_tx_state_changed(&bts->link, NM_OPSTATE_ENABLED, NM_AVSTATE_OK,
NM_OC_BTS, 0, 0xff, 0xff);
/* trx */
oml_mo_state_chg(&bts->site_mgr.mo, NM_OPSTATE_ENABLED, NM_AVSTATE_OK);
oml_mo_state_chg(&bts->mo, NM_OPSTATE_ENABLED, NM_AVSTATE_DEPENDENCY);
for (i = 0; i < bts->num_trx; i++) {
radio_state = (bts->trx[i]->link.state == LINK_STATE_CONNECT) ? NM_OPSTATE_ENABLED : NM_OPSTATE_DISABLED;
oml_tx_state_changed(&bts->link, radio_state,
NM_AVSTATE_OK, NM_OC_RADIO_CARRIER, 0,
bts->trx[i]->trx_nr, 0xff);
oml_tx_sw_act_rep(&bts->link, NM_OC_RADIO_CARRIER, 0, bts->trx[i]->trx_nr, 0xff);
oml_tx_state_changed(&bts->link, NM_OPSTATE_ENABLED,
NM_AVSTATE_OK, NM_OC_BASEB_TRANSC, 0,
bts->trx[i]->trx_nr, 0xff);
oml_tx_sw_act_rep(&bts->link, NM_OC_BASEB_TRANSC, 0, bts->trx[i]->trx_nr, 0xff);
/* channel */
for (j = 0; j < 8; j++) {
if (bts->trx[i]->slot[j].tx_ms)
oml_tx_state_changed(&bts->link,
NM_OPSTATE_DISABLED, NM_AVSTATE_DEPENDENCY,
NM_OC_CHANNEL, 0, bts->trx[i]->trx_nr,
bts->trx[i]->slot[j].slot_nr);
else
oml_tx_state_changed(&bts->link,
NM_OPSTATE_DISABLED,
NM_AVSTATE_NOT_INSTALLED,
NM_OC_CHANNEL, 0, bts->trx[i]->trx_nr,
bts->trx[i]->slot[j].slot_nr);
struct gsm_bts_trx *trx = gsm_bts_trx_num(bts, i);
struct ipabis_link *link = (struct ipabis_link *) trx->rsl_link;
radio_state = (link && link->state == LINK_STATE_CONNECT) ? NM_OPSTATE_ENABLED : NM_OPSTATE_DISABLED;
oml_mo_state_chg(&trx->mo, radio_state, NM_AVSTATE_OK);
oml_mo_tx_sw_act_rep(&trx->mo);
oml_mo_state_chg(&trx->bb_transc.mo, NM_OPSTATE_ENABLED, NM_AVSTATE_OK);
oml_mo_tx_sw_act_rep(&trx->bb_transc.mo);
for (j = 0; j < ARRAY_SIZE(trx->ts); j++) {
struct gsm_bts_trx_ts *ts = &trx->ts[j];
oml_mo_state_chg(&ts->mo, NM_OPSTATE_DISABLED, NM_AVSTATE_DEPENDENCY);
}
}
@ -313,15 +309,17 @@ int bts_link_estab(struct osmocom_bts *bts)
}
/* RSL link is established, send status report */
int trx_link_estab(struct osmobts_trx *trx)
int trx_link_estab(struct gsm_bts_trx *trx)
{
uint8_t radio_state = (trx->link.state == LINK_STATE_CONNECT) ? NM_OPSTATE_ENABLED : NM_OPSTATE_DISABLED;
struct ipabis_link *link = (struct ipabis_link *) trx->rsl_link;
uint8_t radio_state = (link->state == LINK_STATE_CONNECT) ? NM_OPSTATE_ENABLED : NM_OPSTATE_DISABLED;
LOGP(DSUM, LOGL_INFO, "RSL link (TRX %02x) state changed to %s, sending Status'.\n", trx->trx_nr, (trx->link.state == LINK_STATE_CONNECT) ? "up" : "down");
LOGP(DSUM, LOGL_INFO, "RSL link (TRX %02x) state changed to %s, sending Status'.\n",
trx->nr, (link->state == LINK_STATE_CONNECT) ? "up" : "down");
oml_tx_state_changed(&trx->bts->link, radio_state, NM_AVSTATE_OK, NM_OC_RADIO_CARRIER, 0, trx->trx_nr, 0xff);
oml_mo_state_chg(&trx->mo, radio_state, NM_AVSTATE_OK);
if (trx->link.state == LINK_STATE_CONNECT)
if (link->state == LINK_STATE_CONNECT)
rsl_tx_rf_res(trx);
return 0;
@ -332,6 +330,7 @@ void bts_new_si(void *arg)
struct osmobts_trx *trx = arg;
int i;
#if 0
if (osmo_timer_pending(&trx->si.timer))
return;
@ -354,25 +353,41 @@ void bts_new_si(void *arg)
trx->si.timer.cb = bts_new_si;
trx->si.timer.data = trx;
osmo_timer_schedule(&trx->si.timer, 0, 200000);
}
/* handle bts instance (including MS instances) */
int work_bts(struct osmocom_bts *bts)
{
int work = 0, w;
do {
w = 0;
// w |= xxx_dequeue(ms);
if (w)
work = 1;
} while (w);
return work;
}
#if 0
int create_chan(struct osmocom_bts *slot, uint8_t type)
{
welcher type?:
}
#endif
}
int lchan_init_lapdm(struct gsm_lchan *lchan)
{
struct lapdm_channel *lc = &lchan->lapdm_ch;
lapdm_channel_init(lc, LAPDM_MODE_BTS);
lapdm_channel_set_flags(lc, LAPDM_ENT_F_POLLING_ONLY);
lapdm_channel_set_l1(lc, NULL, lchan);
lapdm_channel_set_l3(lc, lapdm_rll_tx_cb, lchan);
return 0;
}
int bts_agch_enqueue(struct gsm_bts *bts, struct msgb *msg)
{
struct gsm_bts_role_bts *btsb = bts_role_bts(bts);;
/* FIXME: implement max queue length */
llist_add_tail(&msg->list, &btsb->agch_queue);
return 0;
}
struct msgb *bts_agch_dequeue(struct gsm_bts *bts)
{
struct gsm_bts_role_bts *btsb = bts_role_bts(bts);;
struct msgb *msg;
if (llist_empty(&btsb->agch_queue))
return NULL;
msg = llist_entry(btsb->agch_queue.next, struct msgb, list);
llist_del(&msg->list);
return msg;
}

1
src/common/gsm_data_shared.c Normal file
View File

@ -0,0 +1 @@
#include "../../../openbsc/openbsc/src/libcommon/gsm_data_shared.c"

69
src/common/load_indication.c Normal file
View File

@ -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);
}

122
src/common/logging.c Normal file
View File

@ -0,0 +1,122 @@
/* libosmocore logging support */
/* (C) 2011 by Andreas Eversberg <jolly@eversberg.eu>
* (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 <errno.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/application.h>
#include <osmocom/core/utils.h>
#include <osmo-bts/bts.h>
#include <osmo-bts/logging.h>
static const struct log_info_cat bts_log_info_cat[] = {
[DRSL] = {
.name = "DRSL",
.description = "A-bis Radio Siganlling Link (RSL)",
.color = "\033[1;35m",
.enabled = 1, .loglevel = LOGL_NOTICE,
},
[DOML] = {
.name = "DOML",
.description = "A-bis Network Management / O&M (NM/OML)",
.color = "\033[1;36m",
.enabled = 1, .loglevel = LOGL_INFO,
},
[DRLL] = {
.name = "DRLL",
.description = "A-bis Radio Link Layer (RLL)",
.color = "\033[1;31m",
.enabled = 1, .loglevel = LOGL_NOTICE,
},
[DRR] = {
.name = "DRR",
.description = "Layer3 Radio Resource (RR)",
.color = "\033[1;34m",
.enabled = 1, .loglevel = LOGL_NOTICE,
},
[DMEAS] = {
.name = "DMEAS",
.description = "Radio Measurement Processing",
.enabled = 0, .loglevel = LOGL_NOTICE,
},
[DPAG] = {
.name = "DPAG",
.description = "Paging Subsystem",
.color = "\033[1;38m",
.enabled = 1, .loglevel = LOGL_INFO,
},
[DL1C] = {
.name = "DL1C",
.description = "Layer 1",
.loglevel = LOGL_DEBUG,
.enabled = 1,
},
[DL1P] = {
.name = "DL1P",
.description = "Layer 1 Primitives",
.loglevel = LOGL_DEBUG,
.enabled = 0,
},
[DABIS] = {
.name = "DABIS",
.description = "A-bis Intput Subsystem",
.enabled = 1, .loglevel = LOGL_NOTICE,
},
#if 0
[DNS] = {
.name = "DNS",
.description = "GPRS Network Service (NS)",
.enabled = 1, .loglevel = LOGL_INFO,
},
[DBSSGP] = {
.name = "DBSSGP",
.description = "GPRS BSS Gateway Protocol (BSSGP)",
.enabled = 1, .loglevel = LOGL_DEBUG,
},
[DLLC] = {
.name = "DLLC",
.description = "GPRS Logical Link Control Protocol (LLC)",
.enabled = 1, .loglevel = LOGL_DEBUG,
},
#endif
};
const struct log_info bts_log_info = {
.cat = bts_log_info_cat,
.num_cat = ARRAY_SIZE(bts_log_info_cat),
};
#define DEFAULT_MASK "DL1C:DOML:DRSL:DPAG"
int bts_log_init(const char *category_mask)
{
if (!category_mask)
category_mask = DEFAULT_MASK;
osmo_init_logging(&bts_log_info);
log_parse_category_mask(osmo_stderr_target, category_mask);
return 0;
}

910
src/common/oml.c
View File

File diff suppressed because it is too large Load Diff

440
src/common/paging.c Normal file
View File

@ -0,0 +1,440 @@
/* Paging message encoding + queue management */
/* (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/>.
*
*/
/* TODO:
* eMLPP priprity
* add P1/P2/P3 rest octets
*/
#include <stdlib.h>
#include <stdint.h>
#include <errno.h>
#include <string.h>
#include <time.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/linuxlist.h>
#include <osmocom/gsm/protocol/gsm_04_08.h>
#include <osmocom/gsm/gsm0502.h>
#include <osmo-bts/bts.h>
#include <osmo-bts/rsl.h>
#include <osmo-bts/logging.h>
#include <osmo-bts/paging.h>
#include <osmo-bts/signal.h>
#define MAX_PAGING_BLOCKS_CCCH 9
#define MAX_BS_PA_MFRMS 9
struct paging_record {
struct llist_head list;
time_t expiration_time;
uint8_t chan_needed;
uint8_t identity_lv[9];
};
struct paging_state {
/* parameters taken / interpreted from BCCH/CCCH configuration */
struct gsm48_control_channel_descr chan_desc;
/* configured otherwise */
unsigned int paging_lifetime; /* in seconds */
unsigned int num_paging_max;
/* total number of currently active paging records in queue */
unsigned int num_paging;
struct llist_head paging_queue[MAX_PAGING_BLOCKS_CCCH*MAX_BS_PA_MFRMS];
};
static int tmsi_mi_to_uint(uint32_t *out, const uint8_t *tmsi_lv)
{
if (tmsi_lv[0] < 5)
return -EINVAL;
if ((tmsi_lv[1] & 7) != GSM_MI_TYPE_TMSI)
return -EINVAL;
*out = *((uint32_t *)(tmsi_lv+2));
return 0;
}
/* paging block numbers in a simple non-combined CCCH */
static const uint8_t block_by_tdma51[51] = {
255, 255, /* FCCH, SCH */
255, 255, 255, 255, /* BCCH */
0, 0, 0, 0, /* B0(6..9) */
255, 255, /* FCCH, SCH */
1, 1, 1, 1, /* B1(12..15) */
2, 2, 2, 2, /* B2(16..19) */
255, 255, /* FCCH, SCH */
3, 3, 3, 3, /* B3(22..25) */
4, 4, 4, 4, /* B3(26..29) */
255, 255, /* FCCH, SCH */
5, 5, 5, 5, /* B3(32..35) */
6, 6, 6, 6, /* B3(36..39) */
255, 255, /* FCCH, SCH */
7, 7, 7, 7, /* B3(42..45) */
8, 8, 8, 8, /* B3(46..49) */
255, /* empty */
};
/* get the paging block number _within_ current 51 multiframe */
static int get_pag_idx_n(struct paging_state *ps, struct gsm_time *gt)
{
int blk_n = block_by_tdma51[gt->t3];
int blk_idx;
if (blk_n == 255)
return -EINVAL;
blk_idx = blk_n - ps->chan_desc.bs_ag_blks_res;
if (blk_idx < 0)
return -EINVAL;
return blk_idx;
}
/* get paging block index over multiple 51 multiframes */
static int get_pag_subch_nr(struct paging_state *ps, struct gsm_time *gt)
{
int pag_idx = get_pag_idx_n(ps, gt);
unsigned int n_pag_blks_51 = gsm0502_get_n_pag_blocks(&ps->chan_desc);
unsigned int mfrm_part;
if (pag_idx < 0)
return pag_idx;
mfrm_part = ((gt->fn / 51) % (ps->chan_desc.bs_pa_mfrms+2)) * n_pag_blks_51;
return pag_idx + mfrm_part;
}
/* Add an identity to the paging queue */
int paging_add_identity(struct paging_state *ps, uint8_t paging_group,
const uint8_t *identity_lv, uint8_t chan_needed)
{
struct llist_head *group_q = &ps->paging_queue[paging_group];
struct paging_record *pr;
if (ps->num_paging >= ps->num_paging_max) {
LOGP(DPAG, LOGL_NOTICE, "Dropping paging, queue full (%u)\n",
ps->num_paging);
return -ENOSPC;
}
/* Check if we already have this identity */
llist_for_each_entry(pr, group_q, list) {
if (identity_lv[0] == pr->identity_lv[0] &&
!memcmp(identity_lv+1, pr->identity_lv+1, identity_lv[0])) {
LOGP(DPAG, LOGL_INFO, "Ignoring duplicate paging\n");
pr->expiration_time = time(NULL) + ps->paging_lifetime;
return -EEXIST;
}
}
pr = talloc_zero(ps, struct paging_record);
if (!pr)
return -ENOMEM;
if (*identity_lv + 1 > sizeof(pr->identity_lv)) {
talloc_free(pr);
return -E2BIG;
}
LOGP(DPAG, LOGL_INFO, "Add paging to queue (group=%u, queue_len=%u)\n",
paging_group, ps->num_paging+1);
pr->expiration_time = time(NULL) + ps->paging_lifetime;
pr->chan_needed = chan_needed;
memcpy(&pr->identity_lv, identity_lv, identity_lv[0]+1);
/* enqueue the new identity to the HEAD of the queue,
* to ensure it will be paged quickly at least once. */
llist_add(&pr->list, group_q);
ps->num_paging++;
return 0;
}
static int fill_paging_type_1(uint8_t *out_buf, const uint8_t *identity1_lv,
uint8_t chan1, const uint8_t *identity2_lv,
uint8_t chan2)
{
struct gsm48_paging1 *pt1 = (struct gsm48_paging1 *) out_buf;
uint8_t *cur;
memset(out_buf, 0, sizeof(*pt1));
pt1->proto_discr = GSM48_PDISC_RR;
pt1->msg_type = GSM48_MT_RR_PAG_REQ_1;
pt1->pag_mode = GSM48_PM_NORMAL;
pt1->cneed1 = chan1 & 3;
pt1->cneed2 = chan2 & 3;
cur = lv_put(pt1->data, identity1_lv[0], identity1_lv+1);
if (identity2_lv)
cur = lv_put(cur, identity2_lv[0], identity2_lv+1);
pt1->l2_plen = cur - out_buf - 1;
return cur - out_buf;
}
static int fill_paging_type_2(uint8_t *out_buf, const uint8_t *tmsi1_lv,
uint8_t cneed1, const uint8_t *tmsi2_lv,
uint8_t cneed2, const uint8_t *identity3_lv)
{
struct gsm48_paging2 *pt2 = (struct gsm48_paging2 *) out_buf;
uint8_t *cur;
memset(out_buf, 0, sizeof(*pt2));
pt2->proto_discr = GSM48_PDISC_RR;
pt2->msg_type = GSM48_MT_RR_PAG_REQ_2;
pt2->pag_mode = GSM48_PM_NORMAL;
pt2->cneed1 = cneed1;
pt2->cneed2 = cneed2;
tmsi_mi_to_uint(&pt2->tmsi1, tmsi1_lv);
tmsi_mi_to_uint(&pt2->tmsi2, tmsi2_lv);
cur = out_buf + sizeof(*pt2);
if (identity3_lv)
cur = lv_put(pt2->data, identity3_lv[0], identity3_lv+1);
pt2->l2_plen = cur - out_buf -1;
return cur - out_buf;
}
static int fill_paging_type_3(uint8_t *out_buf, const uint8_t *tmsi1_lv,
uint8_t cneed1, const uint8_t *tmsi2_lv,
uint8_t cneed2, const uint8_t *tmsi3_lv,
const uint8_t *tmsi4_lv)
{
struct gsm48_paging3 *pt3 = (struct gsm48_paging3 *) out_buf;
uint8_t *cur;
memset(out_buf, 0, sizeof(*pt3));
pt3->proto_discr = GSM48_PDISC_RR;
pt3->msg_type = GSM48_MT_RR_PAG_REQ_3;
pt3->pag_mode = GSM48_PM_NORMAL;
pt3->cneed1 = cneed1;
pt3->cneed2 = cneed2;
tmsi_mi_to_uint(&pt3->tmsi1, tmsi1_lv);
tmsi_mi_to_uint(&pt3->tmsi2, tmsi2_lv);
tmsi_mi_to_uint(&pt3->tmsi3, tmsi3_lv);
tmsi_mi_to_uint(&pt3->tmsi4, tmsi4_lv);
cur = out_buf + sizeof(*pt3);
return cur - out_buf;
}
static const uint8_t empty_id_lv[] = { 0x01, 0x00 };
static struct paging_record *dequeue_pr(struct llist_head *group_q)
{
struct paging_record *pr;
pr = llist_entry(group_q->next, struct paging_record, list);
llist_del(&pr->list);
return pr;
}
static int pr_is_imsi(struct paging_record *pr)
{
if ((pr->identity_lv[1] & 7) == GSM_MI_TYPE_IMSI)
return 1;
else
return 0;
}
static void sort_pr_tmsi_imsi(struct paging_record *pr[], unsigned int n)
{
int i, j;
struct paging_record *t;
if (n < 2)
return;
/* simple bubble sort */
for (i = n-2; i >= 0; i--) {
for (j=0; j<=i ; j++) {
if (pr_is_imsi(pr[j]) > pr_is_imsi(pr[j+1])) {
t = pr[j];
pr[j] = pr[j+1];
pr[j+1] = t;
}
}
}
}
/* generate paging message for given gsm time */
int paging_gen_msg(struct paging_state *ps, uint8_t *out_buf, struct gsm_time *gt)
{
unsigned int group = get_pag_subch_nr(ps, gt);
struct llist_head *group_q = &ps->paging_queue[group];
int len;
/* There is nobody to be paged, send Type1 with two empty ID */
if (llist_empty(group_q)) {
//DEBUGP(DPAG, "Tx PAGING TYPE 1 (empty)\n");
len = fill_paging_type_1(out_buf, empty_id_lv, 0,
NULL, 0);
} else {
struct paging_record *pr[4];
unsigned int num_pr = 0;
time_t now = time(NULL);
unsigned int i, num_imsi = 0;
/* get (if we have) up to four paging records */
for (i = 0; i < ARRAY_SIZE(pr); i++) {
if (llist_empty(group_q))
break;
pr[i] = dequeue_pr(group_q);
num_pr++;
/* count how many IMSIs are among them */
if (pr_is_imsi(pr[i]))
num_imsi++;
}
/* make sure the TMSIs are ahead of the IMSIs in the array */
sort_pr_tmsi_imsi(pr, num_pr);
if (num_pr == 4 && num_imsi == 0) {
/* No IMSI: easy case, can use TYPE 3 */
DEBUGP(DPAG, "Tx PAGING TYPE 3 (4 TMSI)\n");
len = fill_paging_type_3(out_buf, pr[0]->identity_lv,
pr[0]->chan_needed,
pr[1]->identity_lv,
pr[1]->chan_needed,
pr[2]->identity_lv,
pr[3]->identity_lv);
} else if (num_pr >= 3 && num_imsi <= 1) {
/* 3 or 4, of which only up to 1 is IMSI */
DEBUGP(DPAG, "Tx PAGING TYPE 2 (2 TMSI,1 xMSI)\n");
len = fill_paging_type_2(out_buf,
pr[0]->identity_lv,
pr[0]->chan_needed,
pr[1]->identity_lv,
pr[1]->chan_needed,
pr[2]->identity_lv);
if (num_pr == 4) {
/* re-add #4 for next time */
llist_add(&pr[3]->list, group_q);
pr[3] = NULL;
}
} else if (num_pr == 1) {
DEBUGP(DPAG, "Tx PAGING TYPE 1 (1 xMSI,1 empty)\n");
len = fill_paging_type_1(out_buf, pr[0]->identity_lv,
pr[0]->chan_needed, NULL, 0);
} else {
/* 2 (any type) or
* 3 or 4, of which only 2 will be sent */
DEBUGP(DPAG, "Tx PAGING TYPE 1 (2 xMSI)\n");
len = fill_paging_type_1(out_buf, pr[0]->identity_lv,
pr[0]->chan_needed,
pr[1]->identity_lv,
pr[1]->chan_needed);
if (num_pr >= 3) {
/* re-add #4 for next time */
llist_add(&pr[2]->list, group_q);
pr[2] = NULL;
}
if (num_pr == 4) {
/* re-add #4 for next time */
llist_add(&pr[3]->list, group_q);
pr[3] = NULL;
}
}
for (i = 0; i < num_pr; i++) {
/* skip those that we might have re-added above */
if (pr[i] == NULL)
continue;
/* check if we can expire the paging record,
* or if we need to re-queue it */
if (pr[i]->expiration_time >= now) {
talloc_free(pr[i]);
ps->num_paging--;
LOGP(DPAG, LOGL_INFO, "Removed paging record, queue_len=%u\n",
ps->num_paging);
} else
llist_add_tail(&pr[i]->list, group_q);
}
}
memset(out_buf+len, 0x2B, GSM_MACBLOCK_LEN-len);
return len;
}
int paging_si_update(struct paging_state *ps, struct gsm48_control_channel_descr *chan_desc)
{
LOGP(DPAG, LOGL_INFO, "Paging SI update\n");
memcpy(&ps->chan_desc, chan_desc, sizeof(chan_desc));
/* FIXME: do we need to re-sort the old paging_records? */
return 0;
}
static int paging_signal_cbfn(unsigned int subsys, unsigned int signal, void *hdlr_data,
void *signal_data)
{
if (subsys == SS_GLOBAL && signal == S_NEW_SYSINFO) {
struct gsm_bts *bts = signal_data;
struct gsm_bts_role_bts *btsb = bts->role;
struct paging_state *ps = btsb->paging_state;
struct gsm48_system_information_type_3 *si3 = (void *) bts->si_buf[SYSINFO_TYPE_3];
paging_si_update(ps, &si3->control_channel_desc);
}
return 0;
}
static int initialized = 0;
struct paging_state *paging_init(void *ctx, unsigned int num_paging_max,
unsigned int paging_lifetime)
{
struct paging_state *ps;
unsigned int i;
ps = talloc_zero(ctx, struct paging_state);
if (!ps)
return NULL;
ps->paging_lifetime = paging_lifetime;
ps->num_paging_max = num_paging_max;
for (i = 0; i < ARRAY_SIZE(ps->paging_queue); i++)
INIT_LLIST_HEAD(&ps->paging_queue[i]);
if (!initialized) {
osmo_signal_register_handler(SS_GLOBAL, paging_signal_cbfn, NULL);
initialized = 1;
}
return ps;
}

792
src/common/rsl.c
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File diff suppressed because it is too large Load Diff

18
src/common/rtp.c
View File

@ -1,11 +1,12 @@
/*
* (C) 2011 by Andreas Eversberg <jolly@eversberg.eu>
/* RTP code for BTS side */
/* (C) 2011 by Andreas Eversberg <jolly@eversberg.eu>
*
* 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
* 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,
@ -13,16 +14,11 @@
* 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.
* 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/>.
*
*/
/*
* RTP peer
*/
#include <errno.h>
#include <sys/types.h>
#include <arpa/inet.h>

9
src/common/support.c
View File

@ -3,8 +3,8 @@
* 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
* 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,
@ -12,9 +12,8 @@
* 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.
* 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/>.
*
*/

66
src/common/sysinfo.c Normal file
View File

@ -0,0 +1,66 @@
/* (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 <stdint.h>
#include <osmocom/gsm/gsm_utils.h>
#include <osmocom/gsm/sysinfo.h>
#include <osmo-bts/gsm_data.h>
uint8_t *bts_sysinfo_get(struct gsm_bts *bts, struct gsm_time *g_time)
{
/* Apply the rules from 05.02 6.3.1.3 Mapping of BCCH Data */
switch (g_time->tc) {
case 0:
return GSM_BTS_SI(bts, SYSINFO_TYPE_1);
case 1:
return GSM_BTS_SI(bts, SYSINFO_TYPE_2);
case 2:
return GSM_BTS_SI(bts, SYSINFO_TYPE_3);
case 3:
return GSM_BTS_SI(bts, SYSINFO_TYPE_4);
case 4:
/* 2ter, 2quater, 9, 13 */
break;
case 5:
/* 2ter, 2quater */
break;
case 6:
return GSM_BTS_SI(bts, SYSINFO_TYPE_3);
case 7:
return GSM_BTS_SI(bts, SYSINFO_TYPE_4);
}
return NULL;
}
uint8_t *lchan_sacch_get(struct gsm_lchan *lchan, struct gsm_time *g_time)
{
uint32_t tmp;
for (tmp = lchan->si.last + 1; tmp != lchan->si.last; tmp = (tmp + 1) % 32) {
if (lchan->si.valid & (1 << tmp)) {
lchan->si.last = tmp;
printf("returning SACCH SI type %u\n", tmp);
return lchan->si.buf[tmp];
}
}
return NULL;
}

61
src/common/vty.c Normal file
View File

@ -0,0 +1,61 @@
#include <stdlib.h>
#include <string.h>
#include <osmocom/vty/vty.h>
#include <osmo-bts/vty.h>
enum node_type bts_vty_go_parent(struct vty *vty)
{
switch (vty->node) {
default:
vty->node = CONFIG_NODE;
}
return vty->node;
}
int bts_vty_is_config_node(struct vty *vty, int node)
{
switch (node) {
default:
return 0;
}
}
gDEFUN(ournode_exit, ournode_exit_cmd, "exit",
"Exit current node, go down to provious node")
{
switch (vty->node) {
default:
break;
}
return CMD_SUCCESS;
}
gDEFUN(ournode_end, ournode_end_cmd, "end",
"End current mode and change to enable mode")
{
switch (vty->node) {
default:
vty_config_unlock(vty);
vty->node = ENABLE_NODE;
vty->index = NULL;
vty->index_sub = NULL;
break;
}
return CMD_SUCCESS;
}
struct vty_app_info bts_vty_info = {
.name = "OsmoBTS",
.version = PACKAGE_VERSION,
.go_parent_cb = bts_vty_go_parent,
.is_config_node = bts_vty_is_config_node,
};
const char *osmobts_copyright =
"Copyright (C) 2010, 2011 by Harald Welte and Andreas Eversberg\r\n"
"License AGPLv3+: GNU AGPL version 3 or later <http://gnu.org/licenses/agpl-3.0.html>\r\n"
"This is free software: you are free to change and redistribute it.\r\n"
"There is NO WARRANTY, to the extent permitted by law.\r\n";

4
src/osmo-bts-bb/l1ctl.c
View File

@ -189,12 +189,12 @@ int l1ctl_tx_data_req(struct osmocom_ms *ms, struct msgb *msg,
uint8_t chan_type, chan_ts, chan_ss;
uint8_t gsmtap_chan_type;
if (msgb_l2len(msg) > 23) {
if (msgb_l2len(msg) > GSM_MACBLOCK_LEN) {
LOGP(DL1C, LOGL_ERROR, "L1 cannot handle message length "
"> 23 (%u)\n", msgb_l2len(msg));
msgb_free(msg);
return -EINVAL;
} else if (msgb_l2len(msg) < 23)
} else if (msgb_l2len(msg) < GSM_MACBLOCK_LEN)
LOGP(DL1C, LOGL_ERROR, "L1 message length < 23 (%u) "
"doesn't seem right!\n", msgb_l2len(msg));

16
src/osmo-bts-sysmo/Makefile.am Normal file
View File

@ -0,0 +1,16 @@
INCLUDES = $(all_includes) -I$(top_srcdir)/include
AM_CFLAGS = -Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) $(LIBOSMOVTY_CFLAGS)
LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) $(LIBOSMOVTY_LIBS)
bin_PROGRAMS = sysmobts sysmobts-remote l1fwd-proxy
COMMON_SOURCES = main.c femtobts.c l1_if.c oml.c bts_model.c
sysmobts_SOURCES = $(COMMON_SOURCES) l1_transp_hw.c
sysmobts_LDADD = $(top_builddir)/src/common/libbts.a $(LDADD)
sysmobts_remote_SOURCES = $(COMMON_SOURCES) l1_transp_fwd.c
sysmobts_remote_LDADD = $(top_builddir)/src/common/libbts.a $(LDADD)
l1fwd_proxy_SOURCES = l1_fwd_main.c l1_transp_hw.c
l1fwd_proxy_LDADD = $(top_builddir)/src/common/libbts.a $(LDADD)

41
src/osmo-bts-sysmo/bts_model.c Normal file
View File

@ -0,0 +1,41 @@
/* (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 <osmo-bts/gsm_data.h>
#include <osmo-bts/rsl.h>
#include <osmo-bts/oml.h>
#include <osmo-bts/bts_model.h>
int bts_model_rsl_chan_act(struct gsm_lchan *lchan, struct tlv_parsed *tp)
{
uint8_t mode = *TLVP_VAL(tp, RSL_IE_CHAN_MODE);
uint8_t type = *TLVP_VAL(tp, RSL_IE_ACT_TYPE);
lchan_activate(lchan);
/* FIXME: only do this in case of success */
return rsl_tx_chan_act_ack(lchan, bts_model_get_time(lchan->ts->trx->bts));
}
int bts_model_rsl_chan_rel(struct gsm_lchan *lchan)
{
lchan_deactivate(lchan);
return rsl_tx_rf_rel_ack(lchan);
}

186
src/osmo-bts-sysmo/femtobts.c Normal file
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@ -0,0 +1,186 @@
/* sysmocom femtobts L1 API related definitions */
/* (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 "femtobts.h"
const enum l1prim_type femtobts_l1prim_type[GsmL1_PrimId_NUM] = {
[GsmL1_PrimId_MphInitReq] = L1P_T_REQ,
[GsmL1_PrimId_MphCloseReq] = L1P_T_REQ,
[GsmL1_PrimId_MphConnectReq] = L1P_T_REQ,
[GsmL1_PrimId_MphDisconnectReq] = L1P_T_REQ,
[GsmL1_PrimId_MphActivateReq] = L1P_T_REQ,
[GsmL1_PrimId_MphDeactivateReq] = L1P_T_REQ,
[GsmL1_PrimId_MphConfigReq] = L1P_T_REQ,
[GsmL1_PrimId_MphMeasureReq] = L1P_T_REQ,
[GsmL1_PrimId_MphInitCnf] = L1P_T_CONF,
[GsmL1_PrimId_MphCloseCnf] = L1P_T_CONF,
[GsmL1_PrimId_MphConnectCnf] = L1P_T_CONF,
[GsmL1_PrimId_MphDisconnectCnf] = L1P_T_CONF,
[GsmL1_PrimId_MphActivateCnf] = L1P_T_CONF,
[GsmL1_PrimId_MphDeactivateCnf] = L1P_T_CONF,
[GsmL1_PrimId_MphConfigCnf] = L1P_T_CONF,
[GsmL1_PrimId_MphMeasureCnf] = L1P_T_CONF,
[GsmL1_PrimId_MphTimeInd] = L1P_T_IND,
[GsmL1_PrimId_MphSyncInd] = L1P_T_IND,
[GsmL1_PrimId_PhEmptyFrameReq] = L1P_T_REQ,
[GsmL1_PrimId_PhDataReq] = L1P_T_REQ,
[GsmL1_PrimId_PhConnectInd] = L1P_T_IND,
[GsmL1_PrimId_PhReadyToSendInd] = L1P_T_IND,
[GsmL1_PrimId_PhDataInd] = L1P_T_IND,
[GsmL1_PrimId_PhRaInd] = L1P_T_IND,
};
const struct value_string femtobts_l1prim_names[GsmL1_PrimId_NUM+1] = {
{ GsmL1_PrimId_MphInitReq, "MPH-INIT.req" },
{ GsmL1_PrimId_MphCloseReq, "MPH-CLOSE.req" },
{ GsmL1_PrimId_MphConnectReq, "MPH-CONNECT.req" },
{ GsmL1_PrimId_MphDisconnectReq,"MPH-DISCONNECT.req" },
{ GsmL1_PrimId_MphActivateReq, "MPH-ACTIVATE.req" },
{ GsmL1_PrimId_MphDeactivateReq,"MPH-DEACTIVATE.req" },
{ GsmL1_PrimId_MphConfigReq, "MPH-CONFIG.req" },
{ GsmL1_PrimId_MphMeasureReq, "MPH-MEASURE.req" },
{ GsmL1_PrimId_MphInitCnf, "MPH-INIT.conf" },
{ GsmL1_PrimId_MphCloseCnf, "MPH-CLOSE.conf" },
{ GsmL1_PrimId_MphConnectCnf, "MPH-CONNECT.conf" },
{ GsmL1_PrimId_MphDisconnectCnf,"MPH-DISCONNECT.conf" },
{ GsmL1_PrimId_MphActivateCnf, "MPH-ACTIVATE.conf" },
{ GsmL1_PrimId_MphDeactivateCnf,"MPH-DEACTIVATE.conf" },
{ GsmL1_PrimId_MphConfigCnf, "MPH-CONFIG.conf" },
{ GsmL1_PrimId_MphMeasureCnf, "MPH-MEASURE.conf" },
{ GsmL1_PrimId_MphTimeInd, "MPH-TIME.ind" },
{ GsmL1_PrimId_MphSyncInd, "MPH-SYNC.ind" },
{ GsmL1_PrimId_PhEmptyFrameReq, "PH-EMPTY_FRAME.req" },
{ GsmL1_PrimId_PhDataReq, "PH-DATA.req" },
{ GsmL1_PrimId_PhConnectInd, "PH-CONNECT.ind" },
{ GsmL1_PrimId_PhReadyToSendInd,"PH-READY_TO_SEND.ind" },
{ GsmL1_PrimId_PhDataInd, "PH-DATA.ind" },
{ GsmL1_PrimId_PhRaInd, "PH-RA.ind" },
{ 0, NULL }
};
const GsmL1_PrimId_t femtobts_l1prim_req2conf[GsmL1_PrimId_NUM] = {
[GsmL1_PrimId_MphInitReq] = GsmL1_PrimId_MphInitCnf,
[GsmL1_PrimId_MphCloseReq] = GsmL1_PrimId_MphCloseCnf,
[GsmL1_PrimId_MphConnectReq] = GsmL1_PrimId_MphConnectCnf,
[GsmL1_PrimId_MphDisconnectReq] = GsmL1_PrimId_MphDisconnectCnf,
[GsmL1_PrimId_MphActivateReq] = GsmL1_PrimId_MphActivateCnf,
[GsmL1_PrimId_MphDeactivateReq] = GsmL1_PrimId_MphDeactivateCnf,
[GsmL1_PrimId_MphConfigReq] = GsmL1_PrimId_MphConfigCnf,
[GsmL1_PrimId_MphMeasureReq] = GsmL1_PrimId_MphMeasureCnf,
};
const enum l1prim_type femtobts_sysprim_type[FemtoBts_PrimId_NUM] = {
[FemtoBts_PrimId_SystemInfoReq] = L1P_T_REQ,
[FemtoBts_PrimId_SystemInfoCnf] = L1P_T_CONF,
[FemtoBts_PrimId_SystemFailureInd] = L1P_T_IND,
[FemtoBts_PrimId_ActivateRfReq] = L1P_T_REQ,
[FemtoBts_PrimId_ActivateRfCnf] = L1P_T_CONF,
[FemtoBts_PrimId_DeactivateRfReq] = L1P_T_REQ,
[FemtoBts_PrimId_DeactivateRfCnf] = L1P_T_CONF,
[FemtoBts_PrimId_SetTraceFlagsReq] = L1P_T_REQ,
[FemtoBts_PrimId_RfClockInfoReq] = L1P_T_REQ,
[FemtoBts_PrimId_RfClockInfoCnf] = L1P_T_CONF,
[FemtoBts_PrimId_RfClockSetupReq] = L1P_T_REQ,
[FemtoBts_PrimId_RfClockSetupCnf] = L1P_T_CONF,
[FemtoBts_PrimId_Layer1ResetReq] = L1P_T_REQ,
[FemtoBts_PrimId_Layer1ResetCnf] = L1P_T_CONF,
};
const struct value_string femtobts_sysprim_names[FemtoBts_PrimId_NUM+1] = {
{ FemtoBts_PrimId_SystemInfoReq, "SYSTEM-INFO.req" },
{ FemtoBts_PrimId_SystemInfoCnf, "SYSTEM-INFO.conf" },
{ FemtoBts_PrimId_SystemFailureInd, "SYSTEM-FAILURE.ind" },
{ FemtoBts_PrimId_ActivateRfReq, "ACTIVATE-RF.req" },
{ FemtoBts_PrimId_ActivateRfCnf, "ACTIVATE-RF.conf" },
{ FemtoBts_PrimId_DeactivateRfReq, "DEACTIVATE-RF.req" },
{ FemtoBts_PrimId_DeactivateRfCnf, "DEACTIVATE-RF.conf" },
{ FemtoBts_PrimId_SetTraceFlagsReq, "SET-TRACE-FLAGS.req" },
{ FemtoBts_PrimId_RfClockInfoReq, "RF-CLOCK-INFO.req" },
{ FemtoBts_PrimId_RfClockInfoCnf, "RF-CLOCK-INFO.conf" },
{ FemtoBts_PrimId_RfClockSetupReq, "RF-CLOCK-SETUP.req" },
{ FemtoBts_PrimId_RfClockSetupCnf, "RF-CLOCK-SETUP.conf" },
{ FemtoBts_PrimId_Layer1ResetReq, "LAYER1-RESET.req" },
{ FemtoBts_PrimId_Layer1ResetCnf, "LAYER1-RESET.conf" },
{ 0, NULL }
};
const FemtoBts_PrimId_t femtobts_sysprim_req2conf[FemtoBts_PrimId_NUM] = {
[FemtoBts_PrimId_SystemInfoReq] = FemtoBts_PrimId_SystemInfoCnf,
[FemtoBts_PrimId_ActivateRfReq] = FemtoBts_PrimId_ActivateRfCnf,
[FemtoBts_PrimId_DeactivateRfReq] = FemtoBts_PrimId_DeactivateRfCnf,
[FemtoBts_PrimId_RfClockInfoReq] = FemtoBts_PrimId_RfClockInfoCnf,
[FemtoBts_PrimId_RfClockSetupReq] = FemtoBts_PrimId_RfClockSetupCnf,
[FemtoBts_PrimId_Layer1ResetReq] = FemtoBts_PrimId_Layer1ResetCnf,
};
const struct value_string femtobts_l1sapi_names[GsmL1_Sapi_NUM+1] = {
{ GsmL1_Sapi_Fcch, "FCCH" },
{ GsmL1_Sapi_Sch, "SCH" },
{ GsmL1_Sapi_Sacch, "SACCH" },
{ GsmL1_Sapi_Sdcch, "SDCCH" },
{ GsmL1_Sapi_Bcch, "BCCH" },
{ GsmL1_Sapi_Pch, "PCH" },
{ GsmL1_Sapi_Agch, "AGCH" },
{ GsmL1_Sapi_Cbch, "CBCH" },
{ GsmL1_Sapi_Rach, "RACH" },
{ GsmL1_Sapi_TchF, "TCH/F" },
{ GsmL1_Sapi_FacchF, "FACCH/F" },
{ GsmL1_Sapi_TchH, "TCH/H" },
{ GsmL1_Sapi_FacchH, "FACCH/H" },
{ GsmL1_Sapi_Nch, "NCH" },
{ GsmL1_Sapi_Pdtch, "PDTCH" },
{ GsmL1_Sapi_Pacch, "PACCH" },
{ GsmL1_Sapi_Pbcch, "PBCCH" },
{ GsmL1_Sapi_Pagch, "PAGCH" },
{ GsmL1_Sapi_Ppch, "PPCH" },
{ GsmL1_Sapi_Pnch, "PNCH" },
{ GsmL1_Sapi_Ptcch, "PTCCH" },
{ GsmL1_Sapi_Prach, "PRACH" },
{ 0, NULL }
};
const struct value_string femtobts_l1status_names[GSML1_STATUS_NUM+1] = {
{ GsmL1_Status_Success, "Success" },
{ GsmL1_Status_Generic, "Generic error" },
{ GsmL1_Status_NoMemory, "Not enough memory" },
{ GsmL1_Status_Timeout, "Timeout" },
{ GsmL1_Status_InvalidParam, "Invalid parameter" },
{ GsmL1_Status_Busy, "Resource busy" },
{ GsmL1_Status_NoRessource, "No more resources" },
{ GsmL1_Status_Uninitialized, "Trying to use uninitialized resource" },
{ GsmL1_Status_NullInterface, "Trying to call a NULL interface" },
{ GsmL1_Status_NullFctnPtr, "Trying to call a NULL function ptr" },
{ GsmL1_Status_BadCrc, "Bad CRC" },
{ GsmL1_Status_BadUsf, "Bad USF" },
{ GsmL1_Status_InvalidCPS, "Invalid CPS field" },
{ GsmL1_Status_UnexpectedBurst, "Unexpected burst" },
{ GsmL1_Status_UnavailCodec, "AMR codec is unavailable" },
{ GsmL1_Status_CriticalError, "Critical error" },
{ GsmL1_Status_OverheatError, "Overheat error" },
{ GsmL1_Status_DeviceError, "Device error" },
{ GsmL1_Status_FacchError, "FACCH / TCH order error" },
{ GsmL1_Status_AlreadyDeactivated, "Lchan already deactivated" },
{ GsmL1_Status_TxBurstFifoOvrn, "FIFO overrun" },
{ GsmL1_Status_TxBurstFifoUndr, "FIFO underrun" },
{ GsmL1_Status_NotSynchronized, "Not synchronized" },
{ GsmL1_Status_Unsupported, "Unsupported feature" },
{ 0, NULL }
};

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#ifndef FEMTOBTS_H
#define FEMTOBTS_H
#include <stdlib.h>
#include <osmocom/core/utils.h>
#include <sysmocom/femtobts/femtobts.h>
#include <sysmocom/femtobts/gsml1const.h>
enum l1prim_type {
L1P_T_REQ,
L1P_T_CONF,
L1P_T_IND,
};
const enum l1prim_type femtobts_l1prim_type[GsmL1_PrimId_NUM];
const struct value_string femtobts_l1prim_names[GsmL1_PrimId_NUM+1];
const GsmL1_PrimId_t femtobts_l1prim_req2conf[GsmL1_PrimId_NUM];
const enum l1prim_type femtobts_sysprim_type[FemtoBts_PrimId_NUM];
const struct value_string femtobts_sysprim_names[FemtoBts_PrimId_NUM+1];
const FemtoBts_PrimId_t femtobts_sysprim_req2conf[FemtoBts_PrimId_NUM];
const struct value_string femtobts_l1sapi_names[GsmL1_Sapi_NUM+1];
const struct value_string femtobts_l1status_names[GSML1_STATUS_NUM+1];
#endif /* FEMTOBTS_H */

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#define L1FWD_L1_PORT 9999
#define L1FWD_SYS_PORT 9998

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/* Sysmocom femtobts L1 proxy */
/* (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 <stdint.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/select.h>
#include <osmocom/core/write_queue.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/socket.h>
#include <osmocom/gsm/gsm_utils.h>
#include <osmo-bts/logging.h>
#include <osmo-bts/gsm_data.h>
#include <sysmocom/femtobts/femtobts.h>
#include <sysmocom/femtobts/gsml1prim.h>
#include <sysmocom/femtobts/gsml1const.h>
#include <sysmocom/femtobts/gsml1types.h>
#include "femtobts.h"
#include "l1_if.h"
#include "l1_fwd.h"
static const uint16_t fwd_udp_ports[_NUM_MQ_WRITE] = {
[MQ_SYS_READ] = L1FWD_SYS_PORT,
[MQ_L1_READ] = L1FWD_L1_PORT,
};
struct l1fwd_hdl {
struct sockaddr_storage remote_sa;
socklen_t remote_sa_len;
struct osmo_wqueue udp_wq[_NUM_MQ_WRITE];
struct femtol1_hdl *fl1h;
};
/* callback when there's a new L1 primitive coming in from the HW */
int l1if_handle_l1prim(struct femtol1_hdl *fl1h, struct msgb *msg)
{
struct l1fwd_hdl *l1fh = fl1h->priv;
/* Enqueue message to UDP socket */
return osmo_wqueue_enqueue(&l1fh->udp_wq[MQ_L1_WRITE], msg);
}
/* callback when there's a new SYS primitive coming in from the HW */
int l1if_handle_sysprim(struct femtol1_hdl *fl1h, struct msgb *msg)
{
struct l1fwd_hdl *l1fh = fl1h->priv;
/* Enqueue message to UDP socket */
return osmo_wqueue_enqueue(&l1fh->udp_wq[MQ_SYS_WRITE], msg);
}
/* data has arrived on the udp socket */
static int udp_read_cb(struct osmo_fd *ofd)
{
struct msgb *msg = msgb_alloc_headroom(2048, 128, "udp_rx");
struct l1fwd_hdl *l1fh = ofd->data;
struct femtol1_hdl *fl1h = l1fh->fl1h;
int rc;
if (!msg)
return -ENOMEM;
msg->l1h = msg->data;
l1fh->remote_sa_len = sizeof(l1fh->remote_sa);
rc = recvfrom(ofd->fd, msg->l1h, msgb_tailroom(msg), 0,
(struct sockaddr *) &l1fh->remote_sa, &l1fh->remote_sa_len);
if (rc < 0) {
perror("read from udp");
msgb_free(msg);
return rc;
} else if (rc == 0) {
perror("len=0 read from udp");
msgb_free(msg);
return rc;
}
msgb_put(msg, rc);
DEBUGP(DL1C, "UDP: Received %u bytes for %s queue\n", rc,
ofd->priv_nr == MQ_SYS_WRITE ? "SYS" : "L1");
/* put the message into the right queue */
if (ofd->priv_nr == MQ_SYS_WRITE)
rc = osmo_wqueue_enqueue(&fl1h->write_q[MQ_SYS_WRITE], msg);
else
rc = osmo_wqueue_enqueue(&fl1h->write_q[MQ_L1_WRITE], msg);
return rc;
}
/* callback when we can write to the UDP socket */
static int udp_write_cb(struct osmo_fd *ofd, struct msgb *msg)
{
int rc;
struct l1fwd_hdl *l1fh = ofd->data;
DEBUGP(DL1C, "UDP: Writing %u bytes for %s queue\n", msgb_l1len(msg),
ofd->priv_nr == MQ_SYS_WRITE ? "SYS" : "L1");
rc = sendto(ofd->fd, msg->l1h, msgb_l1len(msg), 0,
(const struct sockaddr *)&l1fh->remote_sa, l1fh->remote_sa_len);
if (rc < 0) {
LOGP(DL1C, LOGL_ERROR, "error writing to L1 msg_queue: %s\n",
strerror(errno));
return rc;
} else if (rc < msgb_l1len(msg)) {
LOGP(DL1C, LOGL_ERROR, "short write to L1 msg_queue: "
"%u < %u\n", rc, msgb_l1len(msg));
return -EIO;
}
return 0;
}
int main(int argc, char **argv)
{
struct l1fwd_hdl *l1fh;
struct femtol1_hdl *fl1h;
int rc, i;
printf("sizeof(GsmL1_Prim_t) = %lu\n", sizeof(GsmL1_Prim_t));
printf("sizeof(FemtoBts_Prim_t) = %lu\n", sizeof(FemtoBts_Prim_t));
bts_log_init(NULL);
/* allocate new femtol1_handle */
fl1h = talloc_zero(NULL, struct femtol1_hdl);
INIT_LLIST_HEAD(&fl1h->wlc_list);
/* open the actual hardware transport */
rc = l1if_transport_open(fl1h);
if (rc < 0)
exit(1);
/* create our fwd handle */
l1fh = talloc_zero(NULL, struct l1fwd_hdl);
l1fh->fl1h = fl1h;
fl1h->priv = l1fh;
/* Open UDP */
for (i = 0; i < 2; i++) {
struct osmo_wqueue *wq = &l1fh->udp_wq[i];
osmo_wqueue_init(wq, 10);
wq->write_cb = udp_write_cb;
wq->read_cb = udp_read_cb;
wq->bfd.when |= BSC_FD_READ;
wq->bfd.data = l1fh;
wq->bfd.priv_nr = i;
rc = osmo_sock_init_ofd(&wq->bfd, AF_UNSPEC, SOCK_DGRAM,
IPPROTO_UDP, NULL, fwd_udp_ports[i],
OSMO_SOCK_F_BIND);
if (rc < 0) {
perror("sock_init");
exit(1);
}
}
while (1) {
rc = osmo_select_main(0);
if (rc < 0) {
perror("select");
exit(1);
}
}
exit(0);
}

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/* Interface handler for Sysmocom L1 */
/* (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 <stdint.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/select.h>
#include <osmocom/core/timer.h>
#include <osmocom/core/write_queue.h>
#include <osmocom/gsm/gsm_utils.h>
#include <osmocom/gsm/lapdm.h>
#include <osmo-bts/logging.h>
#include <osmo-bts/bts.h>
#include <osmo-bts/gsm_data.h>
#include <osmo-bts/paging.h>
#include <sysmocom/femtobts/femtobts.h>
#include <sysmocom/femtobts/gsml1prim.h>
#include <sysmocom/femtobts/gsml1const.h>
#include <sysmocom/femtobts/gsml1types.h>
#include "femtobts.h"
#include "l1_if.h"
#include "l1_transp.h"
/* FIXME: make threshold configurable */
#define MIN_QUAL_RACH -1.0f /* at least -1 dB C/I */
#define MIN_QUAL_NORM -1.0f /* at least -1 dB C/I */
struct wait_l1_conf {
struct llist_head list; /* internal linked list */
struct osmo_timer_list timer; /* timer for L1 timeout */
unsigned int conf_prim_id; /* primitive we expect in response */
unsigned int is_sys_prim; /* is this a system (1) or L1 (0) primitive */
l1if_compl_cb *cb;
void *cb_data;
};
static void release_wlc(struct wait_l1_conf *wlc)
{
osmo_timer_del(&wlc->timer);
talloc_free(wlc);
}
static void l1if_req_timeout(void *data)
{
struct wait_l1_conf *wlc = data;
if (wlc->is_sys_prim)
LOGP(DL1C, LOGL_FATAL, "Timeout waiting for SYS primitive %s\n",
get_value_string(femtobts_sysprim_names, wlc->conf_prim_id));
else
LOGP(DL1C, LOGL_FATAL, "Timeout waiting for L1 primitive %s\n",
get_value_string(femtobts_l1prim_names, wlc->conf_prim_id));
exit(23);
}
/* send a request primitive to the L1 and schedule completion call-back */
int l1if_req_compl(struct femtol1_hdl *fl1h, struct msgb *msg,
int is_system_prim, l1if_compl_cb *cb, void *data)
{
struct wait_l1_conf *wlc;
struct osmo_wqueue *wqueue;
unsigned int timeout_secs;
/* allocate new wsc and store reference to mutex and conf_id */
wlc = talloc_zero(fl1h, struct wait_l1_conf);
wlc->cb = cb;
wlc->cb_data = data;
/* Make sure we actually have received a REQUEST type primitive */
if (is_system_prim == 0) {
GsmL1_Prim_t *l1p = msgb_l1prim(msg);
LOGP(DL1C, LOGL_DEBUG, "Tx L1 prim %s\n",
get_value_string(femtobts_l1prim_names, l1p->id));
if (femtobts_l1prim_type[l1p->id] != L1P_T_REQ) {
LOGP(DL1C, LOGL_ERROR, "L1 Prim %s is not a Request!\n",
get_value_string(femtobts_l1prim_names, l1p->id));
talloc_free(wlc);
return -EINVAL;
}
wlc->is_sys_prim = 0;
wlc->conf_prim_id = femtobts_l1prim_req2conf[l1p->id];
wqueue = &fl1h->write_q[MQ_L1_WRITE];
timeout_secs = 10;
} else {
FemtoBts_Prim_t *sysp = msgb_sysprim(msg);
LOGP(DL1C, LOGL_DEBUG, "Tx SYS prim %s\n",
get_value_string(femtobts_sysprim_names, sysp->id));
if (femtobts_sysprim_type[sysp->id] != L1P_T_REQ) {
LOGP(DL1C, LOGL_ERROR, "SYS Prim %s is not a Request!\n",
get_value_string(femtobts_sysprim_names, sysp->id));
talloc_free(wlc);
return -EINVAL;
}
wlc->is_sys_prim = 1;
wlc->conf_prim_id = femtobts_sysprim_req2conf[sysp->id];
wqueue = &fl1h->write_q[MQ_SYS_WRITE];
timeout_secs = 30;
}
/* enqueue the message in the queue and add wsc to list */
osmo_wqueue_enqueue(wqueue, msg);
llist_add(&wlc->list, &fl1h->wlc_list);
/* schedule a timer for 10 seconds. If DSP fails to respond, we terminate */
wlc->timer.data = wlc;
wlc->timer.cb = l1if_req_timeout;
osmo_timer_schedule(&wlc->timer, timeout_secs, 0);
return 0;
}
/* allocate a msgb containing a GsmL1_Prim_t */
struct msgb *l1p_msgb_alloc(void)
{
struct msgb *msg = msgb_alloc(sizeof(GsmL1_Prim_t), "l1_prim");
if (msg)
msg->l1h = msgb_put(msg, sizeof(GsmL1_Prim_t));
return msg;
}
/* allocate a msgb containing a FemtoBts_Prim_t */
struct msgb *sysp_msgb_alloc(void)
{
struct msgb *msg = msgb_alloc(sizeof(FemtoBts_Prim_t), "sys_prim");
if (msg)
msg->l1h = msgb_put(msg, sizeof(FemtoBts_Prim_t));
return msg;
}
/* prepare a PH-DATA.req primitive in response to a PH-RTS.ind */
static struct msgb *alloc_ph_data_req(GsmL1_PhReadyToSendInd_t *rts_ind)
{
struct msgb *msg = l1p_msgb_alloc();
GsmL1_Prim_t *l1p = msgb_l1prim(msg);
GsmL1_PhDataReq_t *data_req = &l1p->u.phDataReq;
l1p->id = GsmL1_PrimId_PhDataReq;
/* copy fields from PH-RSS.ind */
data_req->hLayer1 = rts_ind->hLayer1;
data_req->u8Tn = rts_ind->u8Tn;
data_req->u32Fn = rts_ind->u32Fn;
data_req->sapi = rts_ind->sapi;
data_req->subCh = rts_ind->subCh;
data_req->u8BlockNbr = rts_ind->u8BlockNbr;
return msg;
}
/* obtain a ptr to the lapdm_channel for a given hLayer2 */
static struct lapdm_channel *
get_lapdm_chan_by_hl2(struct gsm_bts_trx *trx, uint32_t hLayer2)
{
struct gsm_lchan *lchan;
lchan = l1if_hLayer2_to_lchan(trx, hLayer2);
if (!lchan)
return NULL;
return &lchan->lapdm_ch;
}
static const uint8_t fill_frame[GSM_MACBLOCK_LEN] = {
0x01, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B,
0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B,
0x2B, 0x2B, 0x2B
};
static int handle_ph_readytosend_ind(struct femtol1_hdl *fl1,
GsmL1_PhReadyToSendInd_t *rts_ind)
{
struct msgb *resp_msg = alloc_ph_data_req(rts_ind);
struct gsm_bts_trx *trx = fl1->priv;
struct gsm_bts *bts = trx->bts;
struct gsm_bts_role_bts *btsb = bts->role;
GsmL1_Prim_t *l1p = msgb_l1prim(resp_msg);
GsmL1_PhDataReq_t *data_req = &l1p->u.phDataReq;
GsmL1_MsgUnitParam_t *msu_param = &data_req->msgUnitParam;
struct lapdm_channel *lc;
struct lapdm_entity *le;
struct gsm_lchan *lchan;
struct gsm_time g_time;
uint32_t t3p;
uint8_t *si;
struct osmo_phsap_prim pp;
int rc;
gsm_fn2gsmtime(&g_time, rts_ind->u32Fn);
DEBUGP(DL1P, "Rx PH-RTS.ind %02u/%02u/%02u SAPI=%s\n",
g_time.t1, g_time.t2, g_time.t3,
get_value_string(femtobts_l1sapi_names, rts_ind->sapi));
/* copy over parameters from PH-RTS.ind into PH-DATA.req */
data_req->hLayer1 = rts_ind->hLayer1;
data_req->u8Tn = rts_ind->u8Tn;
data_req->u32Fn = rts_ind->u32Fn;
data_req->sapi = rts_ind->sapi;
data_req->subCh = rts_ind->subCh;
data_req->u8BlockNbr = rts_ind->u8BlockNbr;
msu_param->u8Size = GSM_MACBLOCK_LEN;
switch (rts_ind->sapi) {
case GsmL1_Sapi_Sch:
/* compute T3prime */
t3p = (g_time.t3 - 1) / 10;
/* fill SCH burst with data */
msu_param->u8Size = 4;
msu_param->u8Buffer[0] = (bts->bsic << 2) | (g_time.t1 >> 9);
msu_param->u8Buffer[1] = (g_time.t1 >> 1);
msu_param->u8Buffer[2] = (g_time.t1 << 7) | (g_time.t2 << 2) | (t3p >> 1);
msu_param->u8Buffer[3] = (t3p & 1);
break;
case GsmL1_Sapi_Bcch:
/* get them from bts->si_buf[] */
si = bts_sysinfo_get(bts, &g_time);
if (si)
memcpy(msu_param->u8Buffer, si, GSM_MACBLOCK_LEN);
else
memcpy(msu_param->u8Buffer, fill_frame, GSM_MACBLOCK_LEN);
break;
case GsmL1_Sapi_Sacch:
/* resolve the L2 entity using rts_ind->hLayer2 */
lchan = l1if_hLayer2_to_lchan(trx, rts_ind->hLayer2);
le = &lchan->lapdm_ch.lapdm_acch;
rc = lapdm_phsap_dequeue_prim(le, &pp);
if (rc < 0) {
/* No SACCH data from LAPDM pending, send SACCH filling */
uint8_t *si = lchan_sacch_get(lchan, &g_time);
if (si) {
/* The +2 is empty space where the DSP inserts the L1 hdr */
memcpy(msu_param->u8Buffer+2, si, GSM_MACBLOCK_LEN-2);
} else
memcpy(msu_param->u8Buffer, fill_frame, GSM_MACBLOCK_LEN);
} else {
/* The +2 is empty space where the DSP inserts the L1 hdr */
memcpy(msu_param->u8Buffer+2, pp.oph.msg->data, GSM_MACBLOCK_LEN-2);
msgb_free(pp.oph.msg);
}
DEBUGP(DL1C, "Sending SACCH payload bytes: %s\n",
osmo_hexdump(msu_param->u8Buffer, GSM_MACBLOCK_LEN));
break;
case GsmL1_Sapi_Sdcch:
/* resolve the L2 entity using rts_ind->hLayer2 */
lc = get_lapdm_chan_by_hl2(trx, rts_ind->hLayer2);
le = &lc->lapdm_dcch;
rc = lapdm_phsap_dequeue_prim(le, &pp);
if (rc < 0)
memcpy(msu_param->u8Buffer, fill_frame, GSM_MACBLOCK_LEN);
else {
memcpy(msu_param->u8Buffer, pp.oph.msg->data, GSM_MACBLOCK_LEN);
msgb_free(pp.oph.msg);
}
break;
case GsmL1_Sapi_Agch:
/* special queue of messages from IMM ASS CMD */
{
struct msgb *msg = bts_agch_dequeue(bts);
if (!msg)
memcpy(msu_param->u8Buffer, fill_frame, GSM_MACBLOCK_LEN);
else {
DEBUGP(DL1C, "Sending AGCH payload %u bytes: %s\n",
msg->len, osmo_hexdump(msg->data, msg->len));
memcpy(msu_param->u8Buffer, msg->data, msg->len);
msgb_free(msg);
}
}
break;
case GsmL1_Sapi_Pch:
rc = paging_gen_msg(btsb->paging_state, msu_param->u8Buffer, &g_time);
/* FIXME: special paging logic */
break;
case GsmL1_Sapi_TchF:
case GsmL1_Sapi_FacchF:
/* we should never receive a request here */
default:
memcpy(msu_param->u8Buffer, fill_frame, GSM_MACBLOCK_LEN);
break;
}
/* transmit */
osmo_wqueue_enqueue(&fl1->write_q[MQ_L1_WRITE], resp_msg);
return 0;
}
static int handle_mph_time_ind(struct femtol1_hdl *fl1,
GsmL1_MphTimeInd_t *time_ind)
{
/* Update our data structures with the current GSM time */
gsm_fn2gsmtime(&fl1->gsm_time, time_ind->u32Fn);
return 0;
}
/* determine LAPDm entity inside LAPDm channel for given L1 sapi */
static struct lapdm_entity *le_by_l1_sapi(struct lapdm_channel *lc, GsmL1_Sapi_t sapi)
{
switch (sapi) {
case GsmL1_Sapi_Sacch:
return &lc->lapdm_acch;
default:
return &lc->lapdm_dcch;
}
}
static uint8_t gen_link_id(GsmL1_Sapi_t l1_sapi, uint8_t lapdm_sapi)
{
uint8_t c_bits = 0;
if (l1_sapi == GsmL1_Sapi_Sacch)
c_bits = 0x40;
return c_bits | (lapdm_sapi & 7);
}
static void dump_meas_res(GsmL1_MeasParam_t *m)
{
DEBUGPC(DL1C, ", Meas: RSSI %-3.2f dBm, Qual %-3.2f dB, "
"BER %-3.2f, Timing %d\n", m->fRssi, m->fLinkQuality,
m->fBer, m->i16BurstTiming);
}
static int handle_ph_data_ind(struct femtol1_hdl *fl1, GsmL1_PhDataInd_t *data_ind)
{
struct osmo_phsap_prim pp;
struct gsm_lchan *lchan;
struct lapdm_entity *le;
struct msgb *msg;
#warning Properly determine the SAPI here
uint8_t lapdm_sapi = 0;
if (data_ind->measParam.fLinkQuality < MIN_QUAL_NORM)
return 0;
DEBUGP(DL1C, "Rx PH-DATA.ind (hLayer2 = 0x%08x)", data_ind->hLayer2);
dump_meas_res(&data_ind->measParam);
lchan = l1if_hLayer2_to_lchan(fl1->priv, data_ind->hLayer2);
if (!lchan) {
LOGP(DL1C, LOGL_ERROR, "unable to resolve lchan by hLayer2\n");
return -ENODEV;
}
le = le_by_l1_sapi(&lchan->lapdm_ch, data_ind->sapi);
msg = msgb_alloc_headroom(128, 64, "PH-DATA.ind");
osmo_prim_init(&pp.oph, SAP_GSM_PH, PRIM_PH_DATA,
PRIM_OP_INDICATION, msg);
msg->l2h = msgb_put(msg, data_ind->msgUnitParam.u8Size);
memcpy(msg->l2h, data_ind->msgUnitParam.u8Buffer,
data_ind->msgUnitParam.u8Size);
/* FIXME: LAPDm shouldn't really need those... */
pp.u.data.chan_nr = gsm_lchan2chan_nr(lchan);
pp.u.data.link_id = gen_link_id(data_ind->sapi, lapdm_sapi);
return lapdm_phsap_up(&pp.oph, le);
}
static int handle_ph_ra_ind(struct femtol1_hdl *fl1, GsmL1_PhRaInd_t *ra_ind)
{
struct osmo_phsap_prim pp;
struct lapdm_channel *lc;
if (ra_ind->measParam.fLinkQuality < MIN_QUAL_RACH)
return 0;
DEBUGP(DL1C, "Rx PH-RA.ind");
dump_meas_res(&ra_ind->measParam);
lc = get_lapdm_chan_by_hl2(fl1->priv, ra_ind->hLayer2);
if (!lc) {
LOGP(DL1C, LOGL_ERROR, "unable to resolve LAPD channel by hLayer2\n");
return -ENODEV;
}
osmo_prim_init(&pp.oph, SAP_GSM_PH, PRIM_PH_RACH,
PRIM_OP_INDICATION, NULL);
pp.u.rach_ind.ra = ra_ind->msgUnitParam.u8Buffer[0];
pp.u.rach_ind.fn = ra_ind->u32Fn;
/* FIXME: check for under/overflow / sign */
if (ra_ind->measParam.i16BurstTiming <= 0 ||
ra_ind->measParam.i16BurstTiming > 63 * 4)
pp.u.rach_ind.acc_delay = 0;
else
pp.u.rach_ind.acc_delay = ra_ind->measParam.i16BurstTiming >> 2;
return lapdm_phsap_up(&pp.oph, &lc->lapdm_dcch);
}
/* handle any random indication from the L1 */
static int l1if_handle_ind(struct femtol1_hdl *fl1, struct msgb *msg)
{
GsmL1_Prim_t *l1p = msgb_l1prim(msg);
int rc = 0;
switch (l1p->id) {
case GsmL1_PrimId_MphTimeInd:
rc = handle_mph_time_ind(fl1, &l1p->u.mphTimeInd);
break;
case GsmL1_PrimId_MphSyncInd:
break;
case GsmL1_PrimId_PhConnectInd:
break;
case GsmL1_PrimId_PhReadyToSendInd:
rc = handle_ph_readytosend_ind(fl1, &l1p->u.phReadyToSendInd);
break;
case GsmL1_PrimId_PhDataInd:
rc = handle_ph_data_ind(fl1, &l1p->u.phDataInd);
break;
case GsmL1_PrimId_PhRaInd:
rc = handle_ph_ra_ind(fl1, &l1p->u.phRaInd);
break;
default:
break;
}
msgb_free(msg);
return rc;
}
int l1if_handle_l1prim(struct femtol1_hdl *fl1h, struct msgb *msg)
{
GsmL1_Prim_t *l1p = msgb_l1prim(msg);
struct wait_l1_conf *wlc;
int rc;
switch (l1p->id) {
case GsmL1_PrimId_MphTimeInd:
/* silent, don't clog the log file */
break;
default:
LOGP(DL1P, LOGL_DEBUG, "Rx L1 prim %s\n",
get_value_string(femtobts_l1prim_names, l1p->id));
}
/* check if this is a resposne to a sync-waiting request */
llist_for_each_entry(wlc, &fl1h->wlc_list, list) {
/* the limitation here is that we cannot have multiple callers
* sending the same primitive */
if (wlc->is_sys_prim == 0 && l1p->id == wlc->conf_prim_id) {
llist_del(&wlc->list);
rc = wlc->cb(msg, wlc->cb_data);
release_wlc(wlc);
return rc;
}
}
/* if we reach here, it is not a Conf for a pending Req */
return l1if_handle_ind(fl1h, msg);
}
int l1if_handle_sysprim(struct femtol1_hdl *fl1h, struct msgb *msg)
{
FemtoBts_Prim_t *sysp = msgb_sysprim(msg);
struct wait_l1_conf *wlc;
int rc;
LOGP(DL1P, LOGL_DEBUG, "Rx SYS prim %s\n",
get_value_string(femtobts_sysprim_names, sysp->id));
/* check if this is a resposne to a sync-waiting request */
llist_for_each_entry(wlc, &fl1h->wlc_list, list) {
/* the limitation here is that we cannot have multiple callers
* sending the same primitive */
if (wlc->is_sys_prim && sysp->id == wlc->conf_prim_id) {
llist_del(&wlc->list);
rc = wlc->cb(msg, wlc->cb_data);
release_wlc(wlc);
return rc;
}
}
/* if we reach here, it is not a Conf for a pending Req */
return l1if_handle_ind(fl1h, msg);
}
#if 0
/* called by RSL if the BCCH SI has been modified */
int sysinfo_has_changed(struct gsm_bts *bts, int si)
{
/* FIXME: Determine BS_AG_BLKS_RES and
* * set cfgParams.u.agch.u8NbrOfAgch
* * determine implications on paging
*/
/* FIXME: Check for Extended BCCH presence */
/* FIXME: Check for CCCH_CONF */
/* FIXME: Check for BS_PA_MFRMS: update paging */
return 0;
}
#endif
static int activate_rf_compl_cb(struct msgb *resp, void *data)
{
FemtoBts_Prim_t *sysp = msgb_sysprim(resp);
GsmL1_Status_t status;
int on = 0;
if (sysp->id == FemtoBts_PrimId_ActivateRfCnf)
on = 1;
if (on)
status = sysp->u.activateRfCnf.status;
else
status = sysp->u.deactivateRfCnf.status;
LOGP(DL1C, LOGL_INFO, "Rx RF-%sACT.conf (status=%s)\n", on ? "" : "DE",
get_value_string(femtobts_l1status_names, status));
talloc_free(resp);
return 0;
}
int l1if_activate_rf(struct femtol1_hdl *hdl, int on)
{
struct msgb *msg = sysp_msgb_alloc();
FemtoBts_Prim_t *sysp = msgb_sysprim(msg);
if (on) {
sysp->id = FemtoBts_PrimId_ActivateRfReq;
sysp->u.activateRfReq.u12ClkVc = 0xFFFF;
} else {
sysp->id = FemtoBts_PrimId_DeactivateRfReq;
}
return l1if_req_compl(hdl, msg, 1, activate_rf_compl_cb, hdl);
}
static int reset_compl_cb(struct msgb *resp, void *data)
{
struct femtol1_hdl *fl1h = data;
FemtoBts_Prim_t *sysp = msgb_sysprim(resp);
GsmL1_Status_t status = sysp->u.layer1ResetCnf.status;
LOGP(DL1C, LOGL_NOTICE, "Rx L1-RESET.conf (status=%s)\n",
get_value_string(femtobts_l1status_names, status));
talloc_free(resp);
/* If we're coming out of reset .. */
if (status == GsmL1_Status_Success)
l1if_activate_rf(fl1h, 1);
return 0;
}
int l1if_reset(struct femtol1_hdl *hdl)
{
struct msgb *msg = sysp_msgb_alloc();
FemtoBts_Prim_t *sysp = msgb_sysprim(msg);
sysp->id = FemtoBts_PrimId_Layer1ResetReq;
return l1if_req_compl(hdl, msg, 1, reset_compl_cb, hdl);
}
struct femtol1_hdl *l1if_open(void *priv)
{
struct femtol1_hdl *fl1h;
int rc;
fl1h = talloc_zero(priv, struct femtol1_hdl);
if (!fl1h)
return NULL;
INIT_LLIST_HEAD(&fl1h->wlc_list);
fl1h->priv = priv;
rc = l1if_transport_open(fl1h);
if (rc < 0) {
talloc_free(fl1h);
return NULL;
}
return fl1h;
}
int l1if_close(struct femtol1_hdl *fl1h)
{
return l1if_transport_close(fl1h);
}

50
src/osmo-bts-sysmo/l1_if.h Normal file
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#ifndef _FEMTO_L1_H
#define _FEMTO_L1_H
#include <osmocom/core/select.h>
#include <osmocom/core/write_queue.h>
#include <osmocom/gsm/gsm_utils.h>
enum {
MQ_SYS_READ,
MQ_L1_READ,
_NUM_MQ_READ
};
enum {
MQ_SYS_WRITE,
MQ_L1_WRITE,
_NUM_MQ_WRITE
};
struct femtol1_hdl {
struct gsm_time gsm_time;
uint32_t hLayer1; /* handle to the L1 instance in the DSP */
struct llist_head wlc_list;
void *priv; /* user reference */
struct osmo_fd read_ofd[_NUM_MQ_READ]; /* osmo file descriptors */
struct osmo_wqueue write_q[_NUM_MQ_WRITE];
};
#define msgb_l1prim(msg) ((GsmL1_Prim_t *)(msg)->l1h)
#define msgb_sysprim(msg) ((FemtoBts_Prim_t *)(msg)->l1h)
typedef int l1if_compl_cb(struct msgb *l1_msg, void *data);
/* send a request primitive to the L1 and schedule completion call-back */
int l1if_req_compl(struct femtol1_hdl *fl1h, struct msgb *msg,
int is_system_prim, l1if_compl_cb *cb, void *data);
struct femtol1_hdl *l1if_open(void *priv);
int l1if_close(struct femtol1_hdl *hdl);
int l1if_reset(struct femtol1_hdl *hdl);
struct msgb *l1p_msgb_alloc(void);
struct msgb *sysp_msgb_alloc(void);
uint32_t l1if_lchan_to_hLayer2(struct gsm_lchan *lchan);
struct gsm_lchan *l1if_hLayer2_to_lchan(struct gsm_bts_trx *trx, uint32_t hLayer2);
#endif /* _FEMTO_L1_H */

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src/osmo-bts-sysmo/l1_transp.h Normal file
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#ifndef _FEMTOL1_TRANSPH_
#define _FEMTOL1_TRANSPH_
#include <osmocom/core/msgb.h>
/* functions a transport calls on arrival of primitive from BTS */
int l1if_handle_l1prim(struct femtol1_hdl *fl1h, struct msgb *msg);
int l1if_handle_sysprim(struct femtol1_hdl *fl1h, struct msgb *msg);
/* functions exported by a transport */
int l1if_transport_open(struct femtol1_hdl *fl1h);
int l1if_transport_close(struct femtol1_hdl *fl1h);
#endif /* _FEMTOL1_TRANSP_H */

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/* Interface handler for Sysmocom L1 (forwarding) */
/* (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 <stdint.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/select.h>
#include <osmocom/core/write_queue.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/socket.h>
#include <osmocom/gsm/gsm_utils.h>
#include <osmo-bts/logging.h>
#include <osmo-bts/gsm_data.h>
#include <sysmocom/femtobts/femtobts.h>
#include <sysmocom/femtobts/gsml1prim.h>
#include <sysmocom/femtobts/gsml1const.h>
#include <sysmocom/femtobts/gsml1types.h>
#include "femtobts.h"
#include "l1_if.h"
#include "l1_transp.h"
#include "l1_fwd.h"
#define BTS_HOST "192.168.100.151"
static const uint16_t fwd_udp_ports[] = {
[MQ_SYS_WRITE] = L1FWD_SYS_PORT,
[MQ_L1_WRITE] = L1FWD_L1_PORT,
};
static int fwd_read_cb(struct osmo_fd *ofd)
{
struct msgb *msg = msgb_alloc_headroom(2048, 127, "udp_rx");
struct femtol1_hdl *fl1h = ofd->data;
int rc;
if (!msg)
return -ENOMEM;
msg->l1h = msg->data;
rc = read(ofd->fd, msg->l1h, msgb_tailroom(msg));
if (rc < 0) {
LOGP(DL1C, LOGL_ERROR, "Short read from UDP\n");
msgb_free(msg);
return rc;
} else if (rc == 0) {
LOGP(DL1C, LOGL_ERROR, "Len=0 from UDP\n");
msgb_free(msg);
return rc;
}
msgb_put(msg, rc);
if (ofd->priv_nr == MQ_SYS_WRITE)
rc = l1if_handle_sysprim(fl1h, msg);
else
rc = l1if_handle_l1prim(fl1h, msg);
return rc;
}
static int prim_write_cb(struct osmo_fd *ofd, struct msgb *msg)
{
/* write to the fd */
return write(ofd->fd, msg->head, msg->len);
}
int l1if_transport_open(struct femtol1_hdl *fl1h)
{
int rc, i;
printf("sizeof(GsmL1_Prim_t) = %lu\n", sizeof(GsmL1_Prim_t));
printf("sizeof(FemtoBts_Prim_t) = %lu\n", sizeof(FemtoBts_Prim_t));
for (i = 0; i < ARRAY_SIZE(fl1h->write_q); i++) {
struct osmo_wqueue *wq = &fl1h->write_q[i];
struct osmo_fd *ofd = &wq->bfd;
osmo_wqueue_init(wq, 10);
wq->write_cb = prim_write_cb;
wq->read_cb = fwd_read_cb;
ofd->data = fl1h;
ofd->priv_nr = i;
ofd->when |= BSC_FD_READ;
rc = osmo_sock_init_ofd(ofd, AF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP,
BTS_HOST, fwd_udp_ports[i],
OSMO_SOCK_F_CONNECT);
if (rc < 0) {
talloc_free(fl1h);
return rc;
}
}
return 0;
}
int l1if_transport_close(struct femtol1_hdl *fl1h)
{
int i;
for (i = 0; i < ARRAY_SIZE(fl1h->write_q); i++) {
struct osmo_wqueue *wq = &fl1h->write_q[i];
struct osmo_fd *ofd = &wq->bfd;
osmo_wqueue_clear(wq);
osmo_fd_unregister(ofd);
close(ofd->fd);
}
return 0;
}

192
src/osmo-bts-sysmo/l1_transp_hw.c Normal file
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/* Interface handler for Sysmocom L1 (real hardware) */
/* (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 <stdint.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/select.h>
#include <osmocom/core/write_queue.h>
#include <osmocom/gsm/gsm_utils.h>
#include <osmo-bts/logging.h>
#include <osmo-bts/gsm_data.h>
#include <sysmocom/femtobts/femtobts.h>
#include <sysmocom/femtobts/gsml1prim.h>
#include <sysmocom/femtobts/gsml1const.h>
#include <sysmocom/femtobts/gsml1types.h>
#include "femtobts.h"
#include "l1_if.h"
#include "l1_transp.h"
#define DEV_SYS_DSP2ARM_NAME "/dev/msgq/femtobts_dsp2arm"
#define DEV_SYS_ARM2DSP_NAME "/dev/msgq/femtobts_arm2dsp"
#define DEV_L1_DSP2ARM_NAME "/dev/msgq/gsml1_dsp2arm"
#define DEV_L1_ARM2DSP_NAME "/dev/msgq/gsml1_arm2dsp"
static const char *rd_devnames[] = {
[MQ_SYS_READ] = DEV_SYS_DSP2ARM_NAME,
[MQ_L1_READ] = DEV_L1_DSP2ARM_NAME,
};
static const char *wr_devnames[] = {
[MQ_SYS_WRITE] = DEV_SYS_ARM2DSP_NAME,
[MQ_L1_WRITE] = DEV_L1_ARM2DSP_NAME,
};
/* callback when there's something to read from the l1 msg_queue */
static int l1if_fd_cb(struct osmo_fd *ofd, unsigned int what)
{
//struct msgb *msg = l1p_msgb_alloc();
struct msgb *msg = msgb_alloc_headroom(2048, 128, "1l_fd");
struct femtol1_hdl *fl1h = ofd->data;
int rc;
msg->l1h = msg->data;
rc = read(ofd->fd, msg->l1h, sizeof(GsmL1_Prim_t));
if (rc < 0) {
if (rc != -1)
LOGP(DL1C, LOGL_ERROR, "error reading from L1 msg_queue: %s\n",
strerror(errno));
msgb_free(msg);
return rc;
}
msgb_put(msg, rc);
if (ofd->priv_nr == MQ_L1_WRITE)
return l1if_handle_l1prim(fl1h, msg);
else
return l1if_handle_sysprim(fl1h, msg);
};
/* callback when we can write to one of the l1 msg_queue devices */
static int l1fd_write_cb(struct osmo_fd *ofd, struct msgb *msg)
{
int rc;
rc = write(ofd->fd, msg->l1h, msgb_l1len(msg));
if (rc < 0) {
LOGP(DL1C, LOGL_ERROR, "error writing to L1 msg_queue: %s\n",
strerror(errno));
return rc;
} else if (rc < msg->len) {
LOGP(DL1C, LOGL_ERROR, "short write to L1 msg_queue: "
"%u < %u\n", rc, msg->len);
return -EIO;
}
return 0;
}
int l1if_transport_open(struct femtol1_hdl *hdl)
{
int rc, i;
/* Step 1: Open all msg_queue file descriptors */
for (i = 0; i < ARRAY_SIZE(hdl->read_ofd); i++) {
struct osmo_fd *ofd = &hdl->read_ofd[i];
rc = open(rd_devnames[i], O_RDONLY);
if (rc < 0) {
LOGP(DL1C, LOGL_FATAL, "unable to open msg_queue: %s\n",
strerror(errno));
goto out_free;
}
ofd->fd = rc;
ofd->priv_nr = i;
ofd->data = hdl;
ofd->cb = l1if_fd_cb;
ofd->when = BSC_FD_READ;
rc = osmo_fd_register(ofd);
if (rc < 0) {
close(ofd->fd);
ofd->fd = -1;
goto out_free;
}
}
for (i = 0; i < ARRAY_SIZE(hdl->write_q); i++) {
struct osmo_wqueue *wq = &hdl->write_q[i];
struct osmo_fd *ofd = &hdl->write_q[i].bfd;
rc = open(wr_devnames[i], O_WRONLY);
if (rc < 0) {
LOGP(DL1C, LOGL_FATAL, "unable to open msg_queue: %s\n",
strerror(errno));
goto out_read;
}
osmo_wqueue_init(wq, 10);
wq->write_cb = l1fd_write_cb;
ofd->fd = rc;
ofd->priv_nr = i;
ofd->data = hdl;
ofd->when = BSC_FD_WRITE;
rc = osmo_fd_register(ofd);
if (rc < 0) {
close(ofd->fd);
ofd->fd = -1;
goto out_read;
}
}
return 0;
out_read:
for (i = 0; i < ARRAY_SIZE(hdl->read_ofd); i++) {
close(hdl->read_ofd[i].fd);
osmo_fd_unregister(&hdl->read_ofd[i]);
}
out_free:
talloc_free(hdl);
return rc;
}
int l1if_transport_close(struct femtol1_hdl *hdl)
{
int i;
for (i = 0; i < ARRAY_SIZE(hdl->read_ofd); i++) {
struct osmo_fd *ofd = &hdl->read_ofd[i];
osmo_fd_unregister(ofd);
close(ofd->fd);
ofd->fd = -1;
}
for (i = 0; i < ARRAY_SIZE(hdl->write_q); i++) {
struct osmo_fd *ofd = &hdl->write_q[i].bfd;
osmo_fd_unregister(ofd);
close(ofd->fd);
ofd->fd = -1;
}
return 0;
}

54
src/osmo-bts-sysmo/lapdm_glue.c Normal file
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/* (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 <stdint.h>
#include <osmocom/gsm/prim.h>
#include <osmocom/bb/common/l1ctl.h>
#include <osmocom/bb/common/lapdm.h>
/* LAPDm wants to send a PH-* primitive to the physical layer (L1) */
int sysmol1_ph_prim_cb(struct osmo_prim_hdr *oph, void *ctx)
{
struct osmocom_ms *ms = ctx;
struct osmo_phsap_prim *pp = (struct osmo_phsap_prim *) oph;
int rc = 0;
if (oph->sap != SAP_GSM_PH)
return -ENODEV;
if (oph->operation != PRIM_OP_REQUEST)
return -EINVAL;
switch (oph->primitive) {
case PRIM_PH_RACH:
/* A BTS never transmits RACH */
case PRIM_PH_DATA:
/* we use the LAPDm code in polling only, we should never
* get a PH-DATA.req */
default:
LOGP(DLAPDM, LOGL_ERROR, "LAPDm sends unknown prim %u\n",
oph->primitive);
rc = -EINVAL;
break;
}
return rc;
}

243
src/osmo-bts-sysmo/main.c Normal file
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/* Main program for Sysmocom BTS */
/* (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 <stdint.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <getopt.h>
#include <sys/signal.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/application.h>
#include <osmo-bts/gsm_data.h>
#include <osmo-bts/logging.h>
#include <osmo-bts/abis.h>
#include <osmo-bts/bts.h>
#include <osmo-bts/vty.h>
#include "l1_if.h"
/* FIXME: read from real hardware */
const uint8_t abis_mac[6] = { 0,1,2,3,4,5 };
/* FIXME: generate from git */
const char *software_version = "0815";
static const char *bsc_host = NULL;
static const char *config_file = "osmo-bts.cfg";
extern const char *osmobts_copyright;
static int daemonize = 0;
int bts_model_init(struct gsm_bts *bts)
{
struct femtol1_hdl *fl1h;
fl1h = l1if_open(bts->c0);
if (!fl1h) {
LOGP(DL1C, LOGL_FATAL, "Cannot open L1 Interface\n");
return -EIO;
}
bts->c0->role_bts.l1h = fl1h;
l1if_reset(fl1h);
return 0;
}
struct ipabis_link *link_init(struct gsm_bts *bts, const char *ip)
{
struct ipabis_link *link = talloc_zero(bts, struct ipabis_link);
struct in_addr ia;
int rc;
inet_aton(ip, &ia);
link->bts = bts;
bts->oml_link = link;
rc = abis_open(link, ntohl(ia.s_addr));
if (rc < 0)
return NULL;
return link;
}
static void print_help()
{
printf( "Some useful options:\n"
" -h --help this text\n"
" -d --debug MASK Enable debugging (e.g. -d DRSL:DOML:DLAPDM)\n"
" -D --daemonize For the process into a background daemon\n"
" -c --config-file Specify the filename of the config file\n"
" -s --disable-color Don't use colors in stderr log output\n"
" -T --timestamp Prefix every log line with a timestamp\n"
" -V --version Print version information and exit\n"
" -e --log-level Set a global log-level\n"
" -B --bsc-host Specify host-name of the BSC\n"
);
}
/* FIXME: finally get some option parsing code into libosmocore */
static void handle_options(int argc, char **argv)
{
while (1) {
int option_idx = 0, c;
static const struct option long_options[] = {
/* FIXME: all those are generic Osmocom app options */
{ "help", 0, 0, 'h' },
{ "debug", 1, 0, 'd' },
{ "daemonize", 0, 0, 'D' },
{ "config-file", 1, 0, 'c' },
{ "disable-color", 0, 0, 's' },
{ "timestamp", 0, 0, 'T' },
{ "version", 0, 0, 'V' },
{ "log-level", 1, 0, 'e' },
{ "bsc-host", 1, 0, 'B' },
{ 0, 0, 0, 0 }
};
c = getopt_long(argc, argv, "hd:Dc:sTVe:B:",
long_options, &option_idx);
if (c == -1)
break;
switch (c) {
case 'h':
print_help();
exit(0);
break;
case 's':
log_set_use_color(osmo_stderr_target, 0);
break;
case 'd':
log_parse_category_mask(osmo_stderr_target, optarg);
break;
case 'D':
daemonize = 1;
break;
case 'c':
config_file = strdup(optarg);
break;
case 'T':
log_set_print_timestamp(osmo_stderr_target, 1);
break;
case 'V':
print_version(1);
exit(0);
break;
case 'e':
log_set_log_level(osmo_stderr_target, atoi(optarg));
break;
case 'B':
bsc_host = strdup(optarg);
break;
default:
break;
}
}
}
static void signal_handler(int signal)
{
fprintf(stderr, "signal %u received\n", signal);
switch (signal) {
case SIGINT:
//osmo_signal_dispatch(SS_GLOBAL, S_GLOBAL_SHUTDOWN, NULL);
sleep(3);
exit(0);
break;
case SIGABRT:
case SIGUSR1:
case SIGUSR2:
talloc_report_full(tall_bts_ctx, stderr);
break;
default:
break;
}
}
int main(int argc, char **argv)
{
struct gsm_bts *bts;
struct ipabis_link *link;
int rc;
tall_bts_ctx = talloc_named_const(NULL, 1, "OsmoBTS context");
bts_log_init(NULL);
bts = gsm_bts_alloc(tall_bts_ctx);
vty_init(&bts_vty_info);
//bts_vty_init(&
/* FIXME: parse config file */
rc = telnet_init(tall_bts_ctx, NULL, 4241);
if (rc < 0) {
fprintf(stderr, "Error initializing telnet\n");
exit(1);
}
handle_options(argc, argv);
if (!bsc_host) {
fprintf(stderr, "You need to specify the BSC hostname\n");
exit(2);
}
signal(SIGINT, &signal_handler);
signal(SIGABRT, &signal_handler);
signal(SIGUSR1, &signal_handler);
signal(SIGUSR2, &signal_handler);
osmo_init_ignore_signals();
if (bts_init(bts) < 0) {
fprintf(stderr, "unable to to open bts\n");
exit(1);
}
link = link_init(bts, bsc_host);
if (!link) {
fprintf(stderr, "unable to connect to BSC\n");
exit(1);
}
bts->oml_link = link;
if (daemonize) {
rc = osmo_daemonize();
if (rc < 0) {
perror("Error during daemonize");
exit(1);
}
}
while (1) {
log_reset_context();
osmo_select_main(0);
}
}

545
src/osmo-bts-sysmo/oml.c Normal file
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/* (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 <stdint.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/utils.h>
#include <sysmocom/femtobts/gsml1prim.h>
#include <sysmocom/femtobts/gsml1const.h>
#include <sysmocom/femtobts/gsml1types.h>
#include <osmo-bts/gsm_data.h>
#include <osmo-bts/logging.h>
#include <osmo-bts/oml.h>
#include "l1_if.h"
#include "femtobts.h"
static const enum GsmL1_LogChComb_t pchan_to_logChComb[_GSM_PCHAN_MAX] = {
[GSM_PCHAN_NONE] = GsmL1_LogChComb_0,
[GSM_PCHAN_CCCH] = GsmL1_LogChComb_IV,
[GSM_PCHAN_CCCH_SDCCH4] = GsmL1_LogChComb_V,
[GSM_PCHAN_TCH_F] = GsmL1_LogChComb_I,
[GSM_PCHAN_TCH_H] = GsmL1_LogChComb_II,
[GSM_PCHAN_SDCCH8_SACCH8C] = GsmL1_LogChComb_VII,
[GSM_PCHAN_PDCH] = GsmL1_LogChComb_XIII,
//[GSM_PCHAN_TCH_F_PDCH] = FIXME,
[GSM_PCHAN_UNKNOWN] = GsmL1_LogChComb_0,
};
static void *prim_init(GsmL1_Prim_t *prim, GsmL1_PrimId_t id, struct femtol1_hdl *gl1)
{
prim->id = id;
/* for some reason the hLayer1 field is not always at the same position
* in the GsmL1_Prim_t, so we have to have this ugly case statement here... */
switch (id) {
case GsmL1_PrimId_MphInitReq:
//prim->u.mphInitReq.hLayer1 = gl1->hLayer1;
break;
case GsmL1_PrimId_MphCloseReq:
prim->u.mphCloseReq.hLayer1 = gl1->hLayer1;
break;
case GsmL1_PrimId_MphConnectReq:
prim->u.mphConnectReq.hLayer1 = gl1->hLayer1;
break;
case GsmL1_PrimId_MphDisconnectReq:
prim->u.mphDisconnectReq.hLayer1 = gl1->hLayer1;
break;
case GsmL1_PrimId_MphActivateReq:
prim->u.mphActivateReq.hLayer1 = gl1->hLayer1;
break;
case GsmL1_PrimId_MphDeactivateReq:
prim->u.mphDeactivateReq.hLayer1 = gl1->hLayer1;
break;
case GsmL1_PrimId_MphConfigReq:
prim->u.mphConfigReq.hLayer1 = gl1->hLayer1;
break;
case GsmL1_PrimId_MphMeasureReq:
prim->u.mphMeasureReq.hLayer1 = gl1->hLayer1;
break;
case GsmL1_PrimId_MphInitCnf:
case GsmL1_PrimId_MphCloseCnf:
case GsmL1_PrimId_MphConnectCnf:
case GsmL1_PrimId_MphDisconnectCnf:
case GsmL1_PrimId_MphActivateCnf:
case GsmL1_PrimId_MphDeactivateCnf:
case GsmL1_PrimId_MphConfigCnf:
case GsmL1_PrimId_MphMeasureCnf:
break;
case GsmL1_PrimId_MphTimeInd:
break;
case GsmL1_PrimId_MphSyncInd:
break;
case GsmL1_PrimId_PhEmptyFrameReq:
prim->u.phEmptyFrameReq.hLayer1 = gl1->hLayer1;
break;
case GsmL1_PrimId_PhDataReq:
prim->u.phDataReq.hLayer1 = gl1->hLayer1;
break;
case GsmL1_PrimId_PhConnectInd:
break;
case GsmL1_PrimId_PhReadyToSendInd:
break;
case GsmL1_PrimId_PhDataInd:
break;
case GsmL1_PrimId_PhRaInd:
break;
default:
LOGP(DL1C, LOGL_ERROR, "unknown L1 primitive %u\n", id);
break;
}
return &prim->u;
}
GsmL1_Status_t prim_status(GsmL1_Prim_t *prim)
{
/* for some reason the Status field is not always at the same position
* in the GsmL1_Prim_t, so we have to have this ugly case statement here... */
switch (prim->id) {
case GsmL1_PrimId_MphInitCnf:
return prim->u.mphInitCnf.status;
case GsmL1_PrimId_MphCloseCnf:
return prim->u.mphCloseCnf.status;
case GsmL1_PrimId_MphConnectCnf:
return prim->u.mphConnectCnf.status;
case GsmL1_PrimId_MphDisconnectCnf:
return prim->u.mphDisconnectCnf.status;
case GsmL1_PrimId_MphActivateCnf:
return prim->u.mphActivateCnf.status;
case GsmL1_PrimId_MphDeactivateCnf:
return prim->u.mphDeactivateCnf.status;
case GsmL1_PrimId_MphConfigCnf:
return prim->u.mphConfigCnf.status;
case GsmL1_PrimId_MphMeasureCnf:
return prim->u.mphMeasureCnf.status;
default:
break;
}
return GsmL1_Status_Success;
}
#if 0
static int compl_cb_send_oml_msg(struct msgb *l1_msg, void *data)
{
struct msgb *resp_msg = data;
GsmL1_Prim_t *l1p = msgb_l1prim(l1_msg);
if (prim_status(l1p) != GsmL1_Status_Success) {
LOGP(DL1C, LOGL_ERROR, "Rx %s, status: %s\n",
get_value_string(femtobts_l1prim_names, l1p->id),
get_value_string(femtobts_l1status_names, cc->status));
return 0;
}
msgb_free(l1_msg);
return abis_nm_sendmsg(msg);
}
#endif
int lchan_activate(struct gsm_lchan *lchan);
static int opstart_compl_cb(struct msgb *l1_msg, void *data)
{
struct gsm_abis_mo *mo = data;
GsmL1_Prim_t *l1p = msgb_l1prim(l1_msg);
GsmL1_Status_t status = prim_status(l1p);
if (status != GsmL1_Status_Success) {
LOGP(DL1C, LOGL_ERROR, "Rx %s, status: %s\n",
get_value_string(femtobts_l1prim_names, l1p->id),
get_value_string(femtobts_l1status_names, status));
return oml_mo_opstart_nack(mo, NM_NACK_CANT_PERFORM);
}
msgb_free(l1_msg);
/* Set to Operational State: Enabled */
oml_mo_state_chg(mo, NM_OPSTATE_ENABLED, NM_AVSTATE_OK);
/* ugly hack to auto-activate all SAPIs for the BCCH/CCCH on TS0 */
if (mo->obj_class == NM_OC_CHANNEL && mo->obj_inst.trx_nr == 0 &&
mo->obj_inst.ts_nr == 0) {
DEBUGP(DL1C, "====> trying to activate lchans of BCCH\n");
lchan_activate(&mo->bts->c0->ts[0].lchan[0]);
}
/* Send OPSTART ack */
return oml_mo_opstart_ack(mo);
}
static int trx_init_compl_cb(struct msgb *l1_msg, void *data)
{
struct femtol1_hdl *fl1h = data;
struct gsm_bts_trx *trx = fl1h->priv;
GsmL1_Prim_t *l1p = msgb_l1prim(l1_msg);
GsmL1_MphInitCnf_t *ic = &l1p->u.mphInitCnf;
/* store layer1 handle */
if (ic->status == GsmL1_Status_Success)
fl1h->hLayer1 = ic->hLayer1;
return opstart_compl_cb(l1_msg, &trx->mo);
}
/* initialize the layer1 */
static int trx_init(struct gsm_bts_trx *trx)
{
struct msgb *msg = l1p_msgb_alloc();
struct femtol1_hdl *fl1h = trx_femtol1_hdl(trx);
GsmL1_MphInitReq_t *mi_req;
GsmL1_DeviceParam_t *dev_par;
mi_req = prim_init(msgb_l1prim(msg), GsmL1_PrimId_MphInitReq, fl1h);
dev_par = &mi_req->deviceParam;
dev_par->devType = GsmL1_DevType_TxdRxu;
dev_par->freqBand = GsmL1_FreqBand_1800;
dev_par->u16Arfcn = trx->arfcn;
dev_par->u16BcchArfcn = trx->bts->c0->arfcn;
dev_par->u8NbTsc = trx->bts->bsic & 7;
DEBUGP(DL1C, "Setting TSC=%d\n", dev_par->u8NbTsc);
dev_par->fRxPowerLevel = -75.f;
dev_par->fTxPowerLevel = trx->nominal_power - trx->max_power_red;
/* send MPH-INIT-REQ, wait for MPH-INIT-CNF */
return l1if_req_compl(fl1h, msg, 0, trx_init_compl_cb, fl1h);
}
static int ts_connect(struct gsm_bts_trx_ts *ts)
{
struct msgb *msg = l1p_msgb_alloc();
struct femtol1_hdl *fl1h = trx_femtol1_hdl(ts->trx);
GsmL1_MphConnectReq_t *cr;
cr = prim_init(msgb_l1prim(msg), GsmL1_PrimId_MphConnectReq, fl1h);
cr->u8Tn = ts->nr;
cr->logChComb = pchan_to_logChComb[ts->pchan];
return l1if_req_compl(fl1h, msg, 0, opstart_compl_cb, &ts->mo);
}
GsmL1_SubCh_t lchan_to_GsmL1_SubCh_t(const struct gsm_lchan *lchan)
{
switch (lchan->ts->pchan) {
case GSM_PCHAN_CCCH_SDCCH4:
case GSM_PCHAN_TCH_H:
case GSM_PCHAN_SDCCH8_SACCH8C:
return lchan->nr;
case GSM_PCHAN_NONE:
case GSM_PCHAN_CCCH:
case GSM_PCHAN_TCH_F:
case GSM_PCHAN_PDCH:
case GSM_PCHAN_UNKNOWN:
default:
return GsmL1_SubCh_NA;
}
return GsmL1_SubCh_NA;
}
struct sapi_dir {
GsmL1_Sapi_t sapi;
GsmL1_Dir_t dir;
};
static const struct sapi_dir ccch_sapis[] = {
{ GsmL1_Sapi_Fcch, GsmL1_Dir_TxDownlink },
{ GsmL1_Sapi_Sch, GsmL1_Dir_TxDownlink },
{ GsmL1_Sapi_Bcch, GsmL1_Dir_TxDownlink },
{ GsmL1_Sapi_Agch, GsmL1_Dir_TxDownlink },
{ GsmL1_Sapi_Pch, GsmL1_Dir_TxDownlink },
{ GsmL1_Sapi_Rach, GsmL1_Dir_RxUplink },
};
#define DIR_BOTH (GsmL1_Dir_TxDownlink|GsmL1_Dir_RxUplink)
static const struct sapi_dir tchf_sapis[] = {
{ GsmL1_Sapi_TchF, DIR_BOTH },
{ GsmL1_Sapi_FacchF, DIR_BOTH },
{ GsmL1_Sapi_Sacch, DIR_BOTH },
};
static const struct sapi_dir tchh_sapis[] = {
{ GsmL1_Sapi_TchH, DIR_BOTH },
{ GsmL1_Sapi_FacchH, DIR_BOTH },
{ GsmL1_Sapi_Sacch, DIR_BOTH },
};
static const struct sapi_dir sdcch_sapis[] = {
{ GsmL1_Sapi_Sdcch, DIR_BOTH },
{ GsmL1_Sapi_Sacch, DIR_BOTH },
};
struct lchan_sapis {
const struct sapi_dir *sapis;
unsigned int num_sapis;
};
static const struct lchan_sapis sapis_for_lchan[_GSM_LCHAN_MAX] = {
[GSM_LCHAN_SDCCH] = {
.sapis = sdcch_sapis,
.num_sapis = ARRAY_SIZE(sdcch_sapis),
},
[GSM_LCHAN_TCH_F] = {
.sapis = tchf_sapis,
.num_sapis = ARRAY_SIZE(tchf_sapis),
},
[GSM_LCHAN_TCH_H] = {
.sapis = tchh_sapis,
.num_sapis = ARRAY_SIZE(tchh_sapis),
},
[GSM_LCHAN_CCCH] = {
.sapis = ccch_sapis,
.num_sapis = ARRAY_SIZE(ccch_sapis),
},
};
static int lchan_act_compl_cb(struct msgb *l1_msg, void *data)
{
struct gsm_lchan *lchan = data;
GsmL1_Prim_t *l1p = msgb_l1prim(l1_msg);
GsmL1_MphActivateCnf_t *ic = &l1p->u.mphActivateCnf;
LOGP(DL1C, LOGL_NOTICE, "%s MPH-ACTIVATE.conf\n", gsm_lchan_name(lchan));
if (ic->status == GsmL1_Status_Success) {
DEBUGP(DL1C, "Successful activation of L1 SAPI %s on TS %u\n",
get_value_string(femtobts_l1sapi_names, ic->sapi), ic->u8Tn);
lchan->state = LCHAN_S_ACTIVE;
} else {
LOGP(DL1C, LOGL_ERROR, "Error activating L1 SAPI %s on TS %u: %s\n",
get_value_string(femtobts_l1sapi_names, ic->sapi), ic->u8Tn,
get_value_string(femtobts_l1status_names, ic->status));
lchan->state = LCHAN_S_NONE;
}
switch (ic->sapi) {
case GsmL1_Sapi_Sdcch:
case GsmL1_Sapi_TchF:
/* FIXME: Send RSL CHAN ACT */
break;
default:
break;
}
msgb_free(l1_msg);
return 0;
}
uint32_t l1if_lchan_to_hLayer2(struct gsm_lchan *lchan)
{
return (lchan->nr << 8) | (lchan->ts->nr << 16) | (lchan->ts->trx->nr << 24);
}
/* obtain a ptr to the lapdm_channel for a given hLayer2 */
struct gsm_lchan *
l1if_hLayer2_to_lchan(struct gsm_bts_trx *trx, uint32_t hLayer2)
{
uint8_t ts_nr = (hLayer2 >> 16) & 0xff;
uint8_t lchan_nr = (hLayer2 >> 8)& 0xff;
struct gsm_bts_trx_ts *ts;
/* FIXME: if we actually run on the BTS, the 32bit field is large
* enough to simply put a pointer inside. */
if (ts_nr >= ARRAY_SIZE(trx->ts))
return NULL;
ts = &trx->ts[ts_nr];
if (lchan_nr >= ARRAY_SIZE(ts->lchan))
return NULL;
return &ts->lchan[lchan_nr];
}
int lchan_activate(struct gsm_lchan *lchan)
{
struct femtol1_hdl *fl1h = trx_femtol1_hdl(lchan->ts->trx);
const struct lchan_sapis *s4l = &sapis_for_lchan[lchan->type];
unsigned int i;
for (i = 0; i < s4l->num_sapis; i++) {
struct msgb *msg = l1p_msgb_alloc();
GsmL1_MphActivateReq_t *act_req;
act_req = prim_init(msgb_l1prim(msg), GsmL1_PrimId_MphActivateReq, fl1h);
act_req->u8Tn = lchan->ts->nr;
act_req->subCh = lchan_to_GsmL1_SubCh_t(lchan);
act_req->dir = s4l->sapis[i].dir;
act_req->sapi = s4l->sapis[i].sapi;
act_req->hLayer2 = l1if_lchan_to_hLayer2(lchan);
switch (act_req->sapi) {
case GsmL1_Sapi_Rach:
act_req->logChPrm.rach.u8Bsic = lchan->ts->trx->bts->bsic;
break;
case GsmL1_Sapi_Agch:
#warning Set BS_AG_BLKS_RES
act_req->logChPrm.agch.u8NbrOfAgch = 1;
break;
case GsmL1_Sapi_Sacch:
/* Only if we use manual MS power control */
//act_req->logChPrm.sacch.u8MsPowerLevel = FIXME;
break;
case GsmL1_Sapi_TchH:
case GsmL1_Sapi_TchF:
#warning Set AMR parameters for TCH
break;
default:
break;
}
LOGP(DL1C, LOGL_NOTICE, "%s MPH-ACTIVATE.req (hL2=0x%08x)\n",
gsm_lchan_name(lchan), act_req->hLayer2);
/* send the primitive for all GsmL1_Sapi_* that match the LCHAN */
l1if_req_compl(fl1h, msg, 0, lchan_act_compl_cb, lchan);
}
lchan->state = LCHAN_S_ACT_REQ;
lchan_init_lapdm(lchan);
return 0;
}
static int lchan_deact_compl_cb(struct msgb *l1_msg, void *data)
{
struct gsm_lchan *lchan = data;
GsmL1_Prim_t *l1p = msgb_l1prim(l1_msg);
GsmL1_MphDeactivateCnf_t *ic = &l1p->u.mphDeactivateCnf;
LOGP(DL1C, LOGL_NOTICE, "%s MPH-DEACTIVATE.conf\n", gsm_lchan_name(lchan));
if (ic->status == GsmL1_Status_Success) {
DEBUGP(DL1C, "Successful deactivation of L1 SAPI %s on TS %u\n",
get_value_string(femtobts_l1sapi_names, ic->sapi), ic->u8Tn);
lchan->state = LCHAN_S_ACTIVE;
} else {
LOGP(DL1C, LOGL_ERROR, "Error deactivating L1 SAPI %s on TS %u: %s\n",
get_value_string(femtobts_l1sapi_names, ic->sapi), ic->u8Tn,
get_value_string(femtobts_l1status_names, ic->status));
lchan->state = LCHAN_S_NONE;
}
switch (ic->sapi) {
case GsmL1_Sapi_Sdcch:
case GsmL1_Sapi_TchF:
/* FIXME: Send RSL CHAN REL ACK */
break;
default:
break;
}
msgb_free(l1_msg);
return 0;
}
int lchan_deactivate(struct gsm_lchan *lchan)
{
struct femtol1_hdl *fl1h = trx_femtol1_hdl(lchan->ts->trx);
const struct lchan_sapis *s4l = &sapis_for_lchan[lchan->type];
unsigned int i;
for (i = 0; i < s4l->num_sapis; i++) {
struct msgb *msg = l1p_msgb_alloc();
GsmL1_MphDeactivateReq_t *deact_req;
deact_req = prim_init(msgb_l1prim(msg), GsmL1_PrimId_MphDeactivateReq, fl1h);
deact_req->u8Tn = lchan->ts->nr;
deact_req->subCh = lchan_to_GsmL1_SubCh_t(lchan);
deact_req->dir = s4l->sapis[i].dir;
deact_req->sapi = s4l->sapis[i].sapi;
LOGP(DL1C, LOGL_NOTICE, "%s MPH-DEACTIVATE.req\n",
gsm_lchan_name(lchan));
/* send the primitive for all GsmL1_Sapi_* that match the LCHAN */
l1if_req_compl(fl1h, msg, 0, lchan_deact_compl_cb, lchan);
}
lchan->state = LCHAN_S_ACT_REQ;
return 0;
}
struct gsm_time *bts_model_get_time(struct gsm_bts *bts)
{
struct femtol1_hdl *fl1h = trx_femtol1_hdl(bts->c0);
return &fl1h->gsm_time;
}
/* callback from OML */
int bts_model_check_oml(struct gsm_bts *bts, uint8_t msg_type,
struct tlv_parsed *old_attr, struct tlv_parsed *new_attr,
void *obj)
{
/* FIXME: check if the attributes are valid */
return 0;
}
/* callback from OML */
int bts_model_apply_oml(struct gsm_bts *bts, struct msgb *msg,
struct tlv_parsed *new_attr, void *obj)
{
/* FIXME: we actaully need to send a ACK or NACK for the OML message */
return oml_fom_ack_nack(msg, 0);
}
/* callback from OML */
int bts_model_opstart(struct gsm_bts *bts, struct gsm_abis_mo *mo,
void *obj)
{
int rc;
switch (mo->obj_class) {
case NM_OC_RADIO_CARRIER:
rc = trx_init(obj);
break;
case NM_OC_CHANNEL:
rc = ts_connect(obj);
break;
case NM_OC_BTS:
case NM_OC_SITE_MANAGER:
case NM_OC_BASEB_TRANSC:
mo->nm_state.operational = NM_OPSTATE_ENABLED;
rc = oml_mo_opstart_ack(mo);
default:
rc = oml_mo_opstart_nack(mo, NM_NACK_OBJCLASS_NOTSUPP);
}
return rc;
}
int bts_model_chg_adm_state(struct gsm_bts *bts, struct gsm_abis_mo *mo,
void *obj, uint8_t adm_state)
{
/* blindly accept all state changes */
mo->nm_state.administrative = adm_state;
return oml_mo_fom_ack_nack(mo, NM_MT_CHG_ADM_STATE, 0);
}