Changes

bts: guard AMR RTP decoder stub with HAVE_LIBOSMOCODEC_STATIC

Disable dummy osmo_amr_rtp_dec() implementation when
linking against static libosmocodec to avoid symbol
conflicts

Apply to omldummy and virtual BTS models

Change-Id: Ie19ae2013893575a2f74a87af2151034abf57870

trx: add JSON stats export for WebSDR API

Introduce stats_json.c providing JSON serialization for:
- stats and counters
- rate counters
- BTS state
- TRX/transceiver state
- WebSDR runtime metrics

Add osmobts_get_stats() API to expose these via WebSDR
interface and export it in Emscripten build

This enables programmatic access to data previously available
via VTY (e.g. "show stats", "show bts")

Change-Id: Ifb82adfab879a65ecd222c45e06551983aa90a0f

trx: split TRX ctrl response parsing from socket callback

Extract TRX control response parsing logic into
trx_ctrl_parse_rsp() and call it from trx_ctrl_read_cb()

This decouples parsing from socket I/O and allows reuse
with alternative transports

No functional changes intended

Change-Id: I255c7d554aad3ac6df2c66716fae1c1fb512110e

smux: allow lchan lookup without remote address

Make rem_addr optional in osmux_lchan_find() by skipping
address comparison when it is NULL

This allows callers without socket-based addressing to
locate lchans by CID only (e.g. callback-based transports)

Change-Id: I7a275dad2353241c7b04cdb5d6cc1436a175c1f3

build: add WebSDR configure option and Emscripten detection

Detect Emscripten toolchain and introduce --with-websdr
configure option

When enabled, check for libosmo-trx-websdr and required
symbol modulateBits, failing configure if missing

Change-Id: Iff4b76e339e2873686c8c15885dd498458ceb546

abis: add helper to update BTS identity

Introduce abis_update_bts_info() to update site_id and bts_id in
bts_dev_info at runtime

This allows adjusting BTS identity after initialization,
e.g. from external control interfaces

Change-Id: Ibafd66a1e1dc42ad0063c412087bee10d212fe33

trx: factor out TRX ctrl message submission

Extract TRX control message sending logic into
trx_ctrl_submit_msg() and reuse it from trx_ctrl_send()

This separates message construction from transport-specific
submission and prepares for alternative backends

No functional changes intended

Change-Id: Ibbd50117db4531efbc374e43e3802f9f995362cd

trx: factor out clock indication handling into helper

Extract clock indication handling logic into trx_clk_phy()
and reuse it from trx_clk_read_cb()

This separates core FN processing from socket-specific code
and prepares for alternative clock sources (e.g. non-UDP /
in-memory callbacks used in WebSDR/WASM builds).

No functional changes intended

Change-Id: I0e6b3e25da14ada4d0ef86fd4c4e6bbc12e447d2

trx: handle synchronous TRX control callbacks in provision FSM

Set *_sent flags before issuing TRX control commands to ensure
correct state when responses are delivered synchronously
(e.g. WebUSB callback path)

Also guard FSM state handling in st_open_poweroff() to avoid
duplicate transitions if state was already changed by a
synchronous response

No functional change for asynchronous (socket-based) backends

Change-Id: I50c95e3796839e9fe721bff6f96fed4c490c6018

trx: factor out FN timer processing into common helper

Extract core FN timer handling logic into trx_fn_timer_process()
to decouple it from timerfd-specific code.

This allows reusing the same scheduling logic for alternative
timer backends (e.g. WebSDR) while keeping timerfd integration
as a thin wrapper.

No functional changes intended.

Change-Id: Ia28cce57afb3dc97c8655e855ebd5ace7e096648

trx, bts: add optional WebSDR backend (callback-based transport)

Introduce WebSDR backend enabled via ENABLE_WEBSDR,
adding an alternative callback-based transport alongside
existing socket-based TRX/OSMUX I/O

Implement:
- TRX control via osmotrxlib_process_command()
- TRXD data via apitrx_tx_call()/trx_data_read()
- clock handling via apibts_clock_ind() and external timers
- Osmux integration via ws_osmux_* helpers

Adapt scheduler to support API-based burst submission and
external timer callbacks in WebSDR mode

Disable signal handling, stats and socket I/O when building
with ENABLE_WEBSDR

Add WebSDR API entrypoint, Emscripten build target and
example configuration

Enables running BTS/TRX stack in WebAssembly environments

Change-Id: Idebd588f33afd85021813ad5821391781db683a9

build: make timerfd usage optional

Check for sys/timerfd.h in configure and guard its usage
with HAVE_SYS_TIMERFD_H.

This avoids build failures on platforms where timerfd is
not available.

Change-Id: Id5a700c865f984e8f99199a1e365bb7f1462030a

trx: split TRXD parsing from socket callback

Extract TRXD message parsing into trx_data_read() and
reuse it from trx_data_read_cb()

This decouples parsing from socket I/O and allows reuse
with alternative transports

No functional changes intended

Change-Id: I50ad8b6d2edfd91f2d569cd8badf5c036fbf87ed

trx: factor out burst submission into helper

Extract TRXD burst submission logic from bts_sched_flush_buffers()
into trx_sched_submit_bursts()

No functional changes intended, this prepares for alternative
backends reusing the same scheduling logic

Change-Id: I7ce61bee4ca7ca50ef190982f1a0e4ce57c8c838

build: make sched_* usage optional

Add configure checks for sched_* APIs and guard usage of
sched_setscheduler with HAVE_SCHED_SETSCHEDULER.

This avoids build/runtime issues on platforms without
scheduler support.

Change-Id: I5af357c1e2074fa1e05ac6bc20af8535c474d906

trx: factor out TRXD data submission helper

Extract TRXD data sending into trx_data_submit_msg() and
reuse it from trx_if_send_burst()

This separates transport-specific I/O from message construction
and prepares for alternative backends

No functional changes intended

Change-Id: Ie89ac6efe2f5af0b4cbe5a259a18770b8d2de859

trx, bts: add optional WebSDR backend (callback-based transport)

Introduce WebSDR backend enabled via ENABLE_WEBSDR,
adding an alternative callback-based transport alongside
existing socket-based TRX/OSMUX I/O

Implement:
- TRX control via osmotrxlib_process_command()
- TRXD data via apitrx_tx_call()/trx_data_read()
- clock handling via apibts_clock_ind() and external timers
- Osmux integration via ws_osmux_* helpers

Adapt scheduler to support API-based burst submission and
external timer callbacks in WebSDR mode

Disable signal handling, stats and socket I/O when building
with ENABLE_WEBSDR

Add WebSDR API entrypoint, Emscripten build target and
example configuration

Enables running BTS/TRX stack in WebAssembly environments

Change-Id: Idebd588f33afd85021813ad5821391781db683a9

trx: add JSON stats export for WebSDR API

Introduce stats_json.c providing JSON serialization for:
- stats and counters
- rate counters
- BTS state
- TRX/transceiver state
- WebSDR runtime metrics

Add osmobts_get_stats() API to expose these via WebSDR
interface and export it in Emscripten build

This enables programmatic access to data previously available
via VTY (e.g. "show stats", "show bts")

Change-Id: Ifb82adfab879a65ecd222c45e06551983aa90a0f

trx: add JSON stats export for WebSDR API

Introduce stats_json.c providing JSON serialization for:
- stats and counters
- rate counters
- BTS state
- TRX/transceiver state
- WebSDR runtime metrics

Add osmobts_get_stats() API to expose these via WebSDR
interface and export it in Emscripten build

This enables programmatic access to data previously available
via VTY (e.g. "show stats", "show bts")

Change-Id: Ifb82adfab879a65ecd222c45e06551983aa90a0f

trx, bts: add optional WebSDR backend (callback-based transport)

Introduce WebSDR backend enabled via ENABLE_WEBSDR,
adding an alternative callback-based transport alongside
existing socket-based TRX/OSMUX I/O

Implement:
- TRX control via osmotrxlib_process_command()
- TRXD data via apitrx_tx_call()/trx_data_read()
- clock handling via apibts_clock_ind() and external timers
- Osmux integration via ws_osmux_* helpers

Adapt scheduler to support API-based burst submission and
external timer callbacks in WebSDR mode

Disable signal handling, stats and socket I/O when building
with ENABLE_WEBSDR

Add WebSDR API entrypoint, Emscripten build target and
example configuration

Enables running BTS/TRX stack in WebAssembly environments

Change-Id: Idebd588f33afd85021813ad5821391781db683a9

build: make linux/if_packet.h usage optional

Check for presence of linux/if_packet.h in configure and
guard its usage with HAVE_LINUX_IF_PACKET_H.

This avoids build failures on non-Linux platforms or
environments where the header is unavailable.

Change-Id: I8a02b0676e65fa4b6191073c84e0646a2e67a010

trx: handle synchronous TRX control callbacks in provision FSM

Set *_sent flags before issuing TRX control commands to ensure
correct state when responses are delivered synchronously
(e.g. WebUSB callback path)

Also guard FSM state handling in st_open_poweroff() to avoid
duplicate transitions if state was already changed by a
synchronous response

No functional change for asynchronous (socket-based) backends

Change-Id: I50c95e3796839e9fe721bff6f96fed4c490c6018

bts: guard AMR RTP decoder stub with HAVE_LIBOSMOCODEC_STATIC

Disable dummy osmo_amr_rtp_dec() implementation when
linking against static libosmocodec to avoid symbol
conflicts

Apply to omldummy and virtual BTS models

Change-Id: Ie19ae2013893575a2f74a87af2151034abf57870

smux: allow lchan lookup without remote address

Make rem_addr optional in osmux_lchan_find() by skipping
address comparison when it is NULL

This allows callers without socket-based addressing to
locate lchans by CID only (e.g. callback-based transports)

Change-Id: I7a275dad2353241c7b04cdb5d6cc1436a175c1f3

trx: split TRXD parsing from socket callback

Extract TRXD message parsing into trx_data_read() and
reuse it from trx_data_read_cb()

This decouples parsing from socket I/O and allows reuse
with alternative transports

No functional changes intended

Change-Id: I50ad8b6d2edfd91f2d569cd8badf5c036fbf87ed

trx: add JSON stats export for WebSDR API

Introduce stats_json.c providing JSON serialization for:
- stats and counters
- rate counters
- BTS state
- TRX/transceiver state
- WebSDR runtime metrics

Add osmobts_get_stats() API to expose these via WebSDR
interface and export it in Emscripten build

This enables programmatic access to data previously available
via VTY (e.g. "show stats", "show bts")

Change-Id: Ifb82adfab879a65ecd222c45e06551983aa90a0f

trx: factor out TRXD data submission helper

Extract TRXD data sending into trx_data_submit_msg() and
reuse it from trx_if_send_burst()

This separates transport-specific I/O from message construction
and prepares for alternative backends

No functional changes intended

Change-Id: Ie89ac6efe2f5af0b4cbe5a259a18770b8d2de859

build: make timerfd usage optional

Check for sys/timerfd.h in configure and guard its usage
with HAVE_SYS_TIMERFD_H.

This avoids build failures on platforms where timerfd is
not available.

Change-Id: Id5a700c865f984e8f99199a1e365bb7f1462030a

trx: split TRX ctrl response parsing from socket callback

Extract TRX control response parsing logic into
trx_ctrl_parse_rsp() and call it from trx_ctrl_read_cb()

This decouples parsing from socket I/O and allows reuse
with alternative transports

No functional changes intended

Change-Id: I255c7d554aad3ac6df2c66716fae1c1fb512110e

build: make sched_* usage optional

Add configure checks for sched_* APIs and guard usage of
sched_setscheduler with HAVE_SCHED_SETSCHEDULER.

This avoids build/runtime issues on platforms without
scheduler support.

Change-Id: I5af357c1e2074fa1e05ac6bc20af8535c474d906

build: add WebSDR configure option and Emscripten detection

Detect Emscripten toolchain and introduce --with-websdr
configure option

When enabled, check for libosmo-trx-websdr and required
symbol modulateBits, failing configure if missing

Change-Id: Iff4b76e339e2873686c8c15885dd498458ceb546

trx, bts: add optional WebSDR backend (callback-based transport)

Introduce WebSDR backend enabled via ENABLE_WEBSDR,
adding an alternative callback-based transport alongside
existing socket-based TRX/OSMUX I/O

Implement:
- TRX control via osmotrxlib_process_command()
- TRXD data via apitrx_tx_call()/trx_data_read()
- clock handling via apibts_clock_ind() and external timers
- Osmux integration via ws_osmux_* helpers

Adapt scheduler to support API-based burst submission and
external timer callbacks in WebSDR mode

Disable signal handling, stats and socket I/O when building
with ENABLE_WEBSDR

Add WebSDR API entrypoint, Emscripten build target and
example configuration

Enables running BTS/TRX stack in WebAssembly environments

Change-Id: Idebd588f33afd85021813ad5821391781db683a9

trx: factor out TRX ctrl message submission

Extract TRX control message sending logic into
trx_ctrl_submit_msg() and reuse it from trx_ctrl_send()

This separates message construction from transport-specific
submission and prepares for alternative backends

No functional changes intended

Change-Id: Ibbd50117db4531efbc374e43e3802f9f995362cd

trx: factor out FN timer processing into common helper

Extract core FN timer handling logic into trx_fn_timer_process()
to decouple it from timerfd-specific code.

This allows reusing the same scheduling logic for alternative
timer backends (e.g. WebSDR) while keeping timerfd integration
as a thin wrapper.

No functional changes intended.

Change-Id: Ia28cce57afb3dc97c8655e855ebd5ace7e096648

trx: factor out clock indication handling into helper

Extract clock indication handling logic into trx_clk_phy()
and reuse it from trx_clk_read_cb()

This separates core FN processing from socket-specific code
and prepares for alternative clock sources

No functional changes intended

Change-Id: I0e6b3e25da14ada4d0ef86fd4c4e6bbc12e447d2

abis: add helper to update BTS identity

Introduce abis_update() to update site_id and bts_id in
bts_dev_info at runtime

This allows adjusting BTS identity after initialization,
e.g. from external control interfaces

Change-Id: Ibafd66a1e1dc42ad0063c412087bee10d212fe33

trx: factor out burst submission into helper

Extract TRXD burst submission logic from bts_sched_flush_buffers()
into trx_sched_submit_bursts()

No functional changes intended, this prepares for alternative
backends reusing the same scheduling logic

Change-Id: I7ce61bee4ca7ca50ef190982f1a0e4ce57c8c838

trx: factor out clock indication handling into helper

Extract clock indication handling logic into trx_clk_phy()
and reuse it from trx_clk_read_cb()

This separates core FN processing from socket-specific code
and prepares for alternative clock sources

No functional changes intended

Change-Id: I0e6b3e25da14ada4d0ef86fd4c4e6bbc12e447d2

build: make timerfd usage optional

Check for sys/timerfd.h in configure and guard its usage
with HAVE_SYS_TIMERFD_H.

This avoids build failures on platforms where timerfd is
not available.

Change-Id: Id5a700c865f984e8f99199a1e365bb7f1462030a

trx: factor out burst submission into helper

Extract TRXD burst submission logic from bts_sched_flush_buffers()
into trx_sched_submit_bursts()

No functional changes intended, this prepares for alternative
backends reusing the same scheduling logic

Change-Id: I7ce61bee4ca7ca50ef190982f1a0e4ce57c8c838

trx: factor out FN timer processing into common helper

Extract core FN timer handling logic into trx_fn_timer_process()
to decouple it from timerfd-specific code.

This allows reusing the same scheduling logic for alternative
timer backends (e.g. WebSDR) while keeping timerfd integration
as a thin wrapper.

No functional changes intended.

Change-Id: Ia28cce57afb3dc97c8655e855ebd5ace7e096648

smux: allow lchan lookup without remote address

Make rem_addr optional in osmux_lchan_find() by skipping
address comparison when it is NULL

This allows callers without socket-based addressing to
locate lchans by CID only (e.g. callback-based transports)

Change-Id: I7a275dad2353241c7b04cdb5d6cc1436a175c1f3

trx: split TRXD parsing from socket callback

Extract TRXD message parsing into trx_data_read() and
reuse it from trx_data_read_cb()

This decouples parsing from socket I/O and allows reuse
with alternative transports

No functional changes intended

Change-Id: I50ad8b6d2edfd91f2d569cd8badf5c036fbf87ed

trx: handle synchronous TRX control callbacks in provision FSM

Set *_sent flags before issuing TRX control commands to ensure
correct state when responses are delivered synchronously
(e.g. WebUSB callback path)

Also guard FSM state handling in st_open_poweroff() to avoid
duplicate transitions if state was already changed by a
synchronous response

No functional change for asynchronous (socket-based) backends

Change-Id: I50c95e3796839e9fe721bff6f96fed4c490c6018

build: make sched_* usage optional

Add configure checks for sched_* APIs and guard usage of
sched_setscheduler with HAVE_SCHED_SETSCHEDULER.

This avoids build/runtime issues on platforms without
scheduler support.

Change-Id: I5af357c1e2074fa1e05ac6bc20af8535c474d906

trx: factor out TRXD data submission helper

Extract TRXD data sending into trx_data_submit_msg() and
reuse it from trx_if_send_burst()

This separates transport-specific I/O from message construction
and prepares for alternative backends

No functional changes intended

Change-Id: Ie89ac6efe2f5af0b4cbe5a259a18770b8d2de859

abis: add helper to update BTS identity

Introduce abis_update() to update site_id and bts_id in
bts_dev_info at runtime

This allows adjusting BTS identity after initialization,
e.g. from external control interfaces

Change-Id: Ibafd66a1e1dc42ad0063c412087bee10d212fe33

trx: add JSON stats export for WebSDR API

Introduce stats_json.c providing JSON serialization for:
- stats and counters
- rate counters
- BTS state
- TRX/transceiver state
- WebSDR runtime metrics

Add osmobts_get_stats() API to expose these via WebSDR
interface and export it in Emscripten build

This enables programmatic access to data previously available
via VTY (e.g. "show stats", "show bts")

Change-Id: Ifb82adfab879a65ecd222c45e06551983aa90a0f

trx: split TRX ctrl response parsing from socket callback

Extract TRX control response parsing logic into
trx_ctrl_parse_rsp() and call it from trx_ctrl_read_cb()

This decouples parsing from socket I/O and allows reuse
with alternative transports

No functional changes intended

Change-Id: I255c7d554aad3ac6df2c66716fae1c1fb512110e

trx, bts: add optional WebSDR backend (callback-based transport)

Introduce WebSDR backend enabled via ENABLE_WEBSDR,
adding an alternative callback-based transport alongside
existing socket-based TRX/OSMUX I/O

Implement:
- TRX control via osmotrxlib_process_command()
- TRXD data via apitrx_tx_call()/trx_data_read()
- clock handling via apibts_clock_ind() and external timers
- Osmux integration via ws_osmux_* helpers

Adapt scheduler to support API-based burst submission and
external timer callbacks in WebSDR mode

Disable signal handling, stats and socket I/O when building
with ENABLE_WEBSDR

Add WebSDR API entrypoint, Emscripten build target and
example configuration

Enables running BTS/TRX stack in WebAssembly environments

Change-Id: Idebd588f33afd85021813ad5821391781db683a9

bts: guard AMR RTP decoder stub with HAVE_LIBOSMOCODEC_STATIC

Disable dummy osmo_amr_rtp_dec() implementation when
linking against static libosmocodec to avoid symbol
conflicts

Apply to omldummy and virtual BTS models

Change-Id: Ie19ae2013893575a2f74a87af2151034abf57870

build: add WebSDR configure option and Emscripten detection

Detect Emscripten toolchain and introduce --with-websdr
configure option

When enabled, check for libosmo-trx-websdr and required
symbol modulateBits, failing configure if missing

Change-Id: Iff4b76e339e2873686c8c15885dd498458ceb546

build: make linux/if_packet.h usage optional

Check for presence of linux/if_packet.h in configure and
guard its usage with HAVE_LINUX_IF_PACKET_H.

This avoids build failures on non-Linux platforms or
environments where the header is unavailable.

Change-Id: I8a02b0676e65fa4b6191073c84e0646a2e67a010

trx: factor out TRX ctrl message submission

Extract TRX control message sending logic into
trx_ctrl_submit_msg() and reuse it from trx_ctrl_send()

This separates message construction from transport-specific
submission and prepares for alternative backends

No functional changes intended

Change-Id: Ibbd50117db4531efbc374e43e3802f9f995362cd

osmo-bts-omldummy: properly report NM_ATT_IPACC_SUPP_FEATURES

osmo-bts-omldummy is used as the OML backend in the ttcn3-bsc-test.
The common OML code encodes bts->support.* and trx->support.* fields
verbatim into the IPA Supported Features IE (NM_ATT_IPACC_SUPP_FEATURES)
in Get Attributes Responses.  Since bts_model_init() and
bts_model_trx_init() never initialized these fields, they were reported
as all-zeros to osmo-bsc.

osmo-bsc now inspects the supported channel modes before activating a
channel.  An all-zero chan_modes value (present but no bits set) causes
osmo-bsc to reject every speech mode, breaking all assignment-related
TTCN-3 test cases.

Initialize ciphers, gprs_codings, freq_bands, chan_types and chan_modes
to sensible values, matching what osmo-bts-virtual does, so that
osmo-bts-omldummy reports its capabilities correctly.

Change-Id: I7fe83f78c829c300e70a59509847b815a77974d7
Fixes: 0978d1df ("oml: implement handling of NM_ATT_IPACC_SUPP_FEATURES")
Related: OS#6324

struct trx_power_params: fix inaccurate comment

Change-Id: I1bdb7fab24fee28dbeac0ed05e13f650e08c98e9
Fixes: 4c632421 ("bts_shutdown_fsm: fix spurious RAMP_COMPL events in WAIT_TRX_CLOSED")

osmo-bts-trx: rx_data_fn(): fix copy-paste in comment

Change-Id: Ibf35c468310a690fd873cf968bb2c44b493ca5ea

bts_shutdown_fsm: fix spurious RAMP_COMPL events in WAIT_TRX_CLOSED

With multiple TRXes ramping down in lockstep, both their final
ramp-timer callbacks fire back-to-back in the same event loop pass,
setting p_total_cur_mdBm to the target value for both before any async
hardware acknowledgement arrives.  When the first SETPOWER ack returns
and fires ramp_down_compl_cb() for TRX0, the remaining-TRX check in
st_wait_ramp_down_compl() inspects p_total_cur_mdBm for TRX1 and finds
it already at the target - concluding that all TRXes are done.  The FSM
then transitions to WAIT_TRX_CLOSED, and the second ack (for TRX1)
fires ramp_down_compl_cb() into the wrong state, producing:

  BTS_SHUTDOWN(...){WAIT_TRX_CLOSED}: Event BTS_SHUTDOWN_EV_TRX_RAMP_COMPL not permitted

The root cause is that p_total_cur_mdBm is a *requested* value set in
the timer callback, not a confirmed one.  The hardware confirmation
arrives asynchronously via power_trx_change_compl() ->
power_ramp_do_step(), which is also where compl_cb() is invoked.

Fix by adding a 'complete' flag to trx_power_params.ramp that is:

* cleared when _power_ramp_start() begins a new ramp, and
* set just before compl_cb() is called in power_ramp_do_step()

The shutdown FSM remaining-TRX count then checks !ramp.complete instead of
comparing p_total_cur_mdBm against the target, correctly reflecting which
TRXes have actually received hardware confirmation of ramp completion.

Change-Id: Ia71393e871187d6b44b7f520eb421bab354aafd1

osmo-bts-trx: rx_rach_fn(): remove redundant fall-back

Condition `synch_seq != RACH_SYNCH_SEQ_TS0` is unlikely to be true,
given that no other synch. sequences are defined by 3GPP TS 45.002.
Even if this happens for whatever reason (e.g. a bug), assigning
`synch_seq` to `RACH_SYNCH_SEQ_TS0` is not needed, as `synch_seq`
is never read after the switch statement.  The logging message is
not useful either, since we already print the synch. seq. above.

Change-Id: I4cdc03dc6631ca17d13a3067ad03020e3e97eab1