[PATCH BlueZ] shared/bap: Transition ASE to QoS Configured on CIS loss

[PATCH BlueZ] shared/bap: Transition ASE to QoS Configured on CIS loss

[Simon Mikuda]

stream_io_disconnected() only handled the Releasing state, leaving
Enabling, Streaming and Disabling ASEs stuck when the CIS was lost
unexpectedly. The ASE shall autonomously move to QoS Configured on loss
of the CIS and notify the peer; add that transition.

Fixes PTS test BAP/USR/SCC/BV-167-C
---
 src/shared/bap.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/shared/bap.c b/src/shared/bap.c
index deb85b264..350ed53d9 100644
--- a/src/shared/bap.c
+++ b/src/shared/bap.c
@@ -6779,6 +6779,14 @@ static bool stream_io_disconnected(struct io *io, void *user_data)
 	if (stream->ep->state == BT_ASCS_ASE_STATE_RELEASING)
 		stream_set_state(stream, BT_BAP_STREAM_STATE_CONFIG);
 
+	/* On loss of the CIS the ASE shall autonomously transition to QoS
+	 * Configured and notify the peer.
+	 */
+	if (stream->ep->state == BT_ASCS_ASE_STATE_STREAMING ||
+			stream->ep->state == BT_ASCS_ASE_STATE_ENABLING ||
+			stream->ep->state == BT_ASCS_ASE_STATE_DISABLING)
+		stream_set_state(stream, BT_BAP_STREAM_STATE_QOS);
+
 	bt_bap_stream_set_io(stream, -1);
 	return false;
 }
-- 
2.43.0

Re: [PATCH BlueZ] shared/bap: Transition ASE to QoS Configured on CIS loss

[Pauli Virtanen]

ti, 2026-06-09 kello 23:11 +0200, Simon Mikuda kirjoitti:
> stream_io_disconnected() only handled the Releasing state, leaving
> Enabling, Streaming and Disabling ASEs stuck when the CIS was lost
> unexpectedly. The ASE shall autonomously move to QoS Configured on loss
> of the CIS and notify the peer; add that transition.
> 
> Fixes PTS test BAP/USR/SCC/BV-167-C
> ---
>  src/shared/bap.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/src/shared/bap.c b/src/shared/bap.c
> index deb85b264..350ed53d9 100644
> --- a/src/shared/bap.c
> +++ b/src/shared/bap.c
> @@ -6779,6 +6779,14 @@ static bool stream_io_disconnected(struct io *io, void *user_data)
>  	if (stream->ep->state == BT_ASCS_ASE_STATE_RELEASING)
>  		stream_set_state(stream, BT_BAP_STREAM_STATE_CONFIG);
>  
> +	/* On loss of the CIS the ASE shall autonomously transition to QoS
> +	 * Configured and notify the peer.
> +	 */
> +	if (stream->ep->state == BT_ASCS_ASE_STATE_STREAMING ||
> +			stream->ep->state == BT_ASCS_ASE_STATE_ENABLING ||
> +			stream->ep->state == BT_ASCS_ASE_STATE_DISABLING)
> +		stream_set_state(stream, BT_BAP_STREAM_STATE_QOS);
> +
>  	bt_bap_stream_set_io(stream, -1);
>  	return false;
>  }

iirc it may be also broadcast source here, does it do the right thing?

-- 
Pauli Virtanen

Re: [PATCH BlueZ] shared/bap: Transition ASE to QoS Configured on CIS loss

[Simon Mikuda]

this check is for ep (struct bt_bap_endpoint) that is used only for 
unicast. broadcasts use different state in struct bt_bap_stream, so it 
should be OK

On 6/10/26 00:15, Pauli Virtanen wrote:
> ti, 2026-06-09 kello 23:11 +0200, Simon Mikuda kirjoitti:
>> stream_io_disconnected() only handled the Releasing state, leaving
>> Enabling, Streaming and Disabling ASEs stuck when the CIS was lost
>> unexpectedly. The ASE shall autonomously move to QoS Configured on loss
>> of the CIS and notify the peer; add that transition.
>>
>> Fixes PTS test BAP/USR/SCC/BV-167-C
>> ---
>>   src/shared/bap.c | 8 ++++++++
>>   1 file changed, 8 insertions(+)
>>
>> diff --git a/src/shared/bap.c b/src/shared/bap.c
>> index deb85b264..350ed53d9 100644
>> --- a/src/shared/bap.c
>> +++ b/src/shared/bap.c
>> @@ -6779,6 +6779,14 @@ static bool stream_io_disconnected(struct io *io, void *user_data)
>>   	if (stream->ep->state == BT_ASCS_ASE_STATE_RELEASING)
>>   		stream_set_state(stream, BT_BAP_STREAM_STATE_CONFIG);
>>   
>> +	/* On loss of the CIS the ASE shall autonomously transition to QoS
>> +	 * Configured and notify the peer.
>> +	 */
>> +	if (stream->ep->state == BT_ASCS_ASE_STATE_STREAMING ||
>> +			stream->ep->state == BT_ASCS_ASE_STATE_ENABLING ||
>> +			stream->ep->state == BT_ASCS_ASE_STATE_DISABLING)
>> +		stream_set_state(stream, BT_BAP_STREAM_STATE_QOS);
>> +
>>   	bt_bap_stream_set_io(stream, -1);
>>   	return false;
>>   }
> iirc it may be also broadcast source here, does it do the right thing?
>

Re: [PATCH BlueZ] shared/bap: Transition ASE to QoS Configured on CIS loss

[Luiz Augusto von Dentz]

Hi Simon,

On Wed, Jun 10, 2026 at 4:03 AM Simon Mikuda
<simon.mikuda@streamunlimited.com> wrote:
>
> this check is for ep (struct bt_bap_endpoint) that is used only for
> unicast. broadcasts use different state in struct bt_bap_stream, so it
> should be OK
>
> On 6/10/26 00:15, Pauli Virtanen wrote:
> > ti, 2026-06-09 kello 23:11 +0200, Simon Mikuda kirjoitti:
> >> stream_io_disconnected() only handled the Releasing state, leaving
> >> Enabling, Streaming and Disabling ASEs stuck when the CIS was lost
> >> unexpectedly. The ASE shall autonomously move to QoS Configured on loss
> >> of the CIS and notify the peer; add that transition.
> >>
> >> Fixes PTS test BAP/USR/SCC/BV-167-C
> >> ---
> >>   src/shared/bap.c | 8 ++++++++
> >>   1 file changed, 8 insertions(+)
> >>
> >> diff --git a/src/shared/bap.c b/src/shared/bap.c
> >> index deb85b264..350ed53d9 100644
> >> --- a/src/shared/bap.c
> >> +++ b/src/shared/bap.c
> >> @@ -6779,6 +6779,14 @@ static bool stream_io_disconnected(struct io *io, void *user_data)
> >>      if (stream->ep->state == BT_ASCS_ASE_STATE_RELEASING)
> >>              stream_set_state(stream, BT_BAP_STREAM_STATE_CONFIG);
> >>
> >> +    /* On loss of the CIS the ASE shall autonomously transition to QoS
> >> +     * Configured and notify the peer.
> >> +     */
> >> +    if (stream->ep->state == BT_ASCS_ASE_STATE_STREAMING ||
> >> +                    stream->ep->state == BT_ASCS_ASE_STATE_ENABLING ||
> >> +                    stream->ep->state == BT_ASCS_ASE_STATE_DISABLING)
> >> +            stream_set_state(stream, BT_BAP_STREAM_STATE_QOS);
> >> +

I think converting this to a switch statement might be better, as it
would allow us to handle all states, including releasing, within it.
It would be great to have test-bap cover these types of tests as well.

> >>      bt_bap_stream_set_io(stream, -1);
> >>      return false;
> >>   }
> > iirc it may be also broadcast source here, does it do the right thing?
> >
>


-- 
Luiz Augusto von Dentz

[PATCH BlueZ v2 1/2] shared/bap: Transition ASE to QoS Configured on CIS loss

[Simon Mikuda]

stream_io_disconnected() only handled the Releasing state, leaving
Enabling, Streaming and Disabling ASEs stuck when the CIS was lost
unexpectedly.

The ASE shall autonomously move to QoS Configured on loss of the
CIS and notify the peer

Fixes PTS test BAP/USR/SCC/BV-167-C
---
 src/shared/bap.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/shared/bap.c b/src/shared/bap.c
index deb85b264..8d1f25719 100644
--- a/src/shared/bap.c
+++ b/src/shared/bap.c
@@ -6776,8 +6776,16 @@ static bool stream_io_disconnected(struct io *io, void *user_data)
 		return false;
 	}
 
-	if (stream->ep->state == BT_ASCS_ASE_STATE_RELEASING)
+	switch (stream->ep->state) {
+	case BT_ASCS_ASE_STATE_RELEASING:
 		stream_set_state(stream, BT_BAP_STREAM_STATE_CONFIG);
+		break;
+	case BT_ASCS_ASE_STATE_ENABLING:
+	case BT_ASCS_ASE_STATE_STREAMING:
+	case BT_ASCS_ASE_STATE_DISABLING:
+		stream_set_state(stream, BT_BAP_STREAM_STATE_QOS);
+		break;
+	}
 
 	bt_bap_stream_set_io(stream, -1);
 	return false;
-- 
2.43.0

[PATCH BlueZ v2 2/2] unit/bap: Add CIS loss test

[Simon Mikuda]

Verify a Source ASE in the Enabling state transitions to QoS Configured
rather than Disabling when its CIS is lost.

Assisted-by: ClaudeCode:claude-opus-4.8
---
 unit/test-bap.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/unit/test-bap.c b/unit/test-bap.c
index 03b19678e..2847f5743 100644
--- a/unit/test-bap.c
+++ b/unit/test-bap.c
@@ -1486,6 +1486,37 @@ static void test_server(const void *user_data)
 	tester_io_send();
 }
 
+static void bap_attached_state(struct bt_bap *bap, void *user_data)
+{
+	struct test_data *data = user_data;
+
+	data->bap = bap;
+
+	bt_bap_set_debug(data->bap, print_debug, "bt_bap:", NULL);
+
+	bt_bap_state_register(data->bap, data->cfg->state_func, NULL, data,
+									NULL);
+}
+
+/* Like test_server() but registers the config's state callback so the test can
+ * drive autonomous server transitions (e.g. loss of the CIS).
+ */
+static void test_server_state(const void *user_data)
+{
+	struct test_data *data = (void *)user_data;
+	struct io *io;
+
+	io = tester_setup_io(data->iov, data->iovcnt);
+	g_assert(io);
+
+	tester_io_set_complete_func(test_complete_cb);
+
+	data->id = bt_bap_register(bap_attached_state, NULL, data);
+	g_assert(data->id);
+
+	tester_io_send();
+}
+
 static void test_usr_disc(void)
 {
 	/* BAP/USR/DISC/BV-01-C [Expose Audio Sink Capabilities]
@@ -4427,6 +4458,48 @@ static void test_spe(void)
 	IOV_DATA(0x1b, 0x16, 0x00, 0x01, 0x04, 0x00, 0x00, 0x04, 0x03, 0x02, \
 			0x01, 0x00)
 
+static void state_cis_loss(struct bt_bap_stream *stream, uint8_t old_state,
+					uint8_t new_state, void *user_data)
+{
+	struct test_data *data = user_data;
+	int fds[2];
+	int err;
+
+	if (new_state != data->cfg->state)
+		return;
+
+	/* Attach a CIS and tear it down to simulate its loss. */
+	err = socketpair(AF_UNIX, SOCK_SEQPACKET | SOCK_CLOEXEC, 0, fds);
+	g_assert(err == 0);
+	g_assert(bt_bap_stream_io_connecting(stream, fds[0]) == 0);
+	close(fds[1]);
+}
+
+static struct test_config cfg_src_enabling_cis_loss = {
+	.cc = LC3_CONFIG_16_2,
+	.qos = LC3_QOS_16_2_1,
+	.src = true,
+	.state = BT_BAP_STREAM_STATE_ENABLING,
+	.state_func = state_cis_loss,
+};
+
+/* On loss of the CIS a Source ASE in Enabling moves to QoS Configured, not
+ * Disabling.
+ */
+#define SCC_SRC_ENABLING_CIS_LOSS \
+	SCC_SRC_16_2_1, \
+	ENABLE_ASE(SRC_ID(0)), \
+	QOS_SRC_NOTIFY(0, 0, 0x10, 0x27, 0x00, 0x00, 0x02, 0x28, 0x00, \
+			0x02, 0x0a, 0x00, 0x40, 0x9c, 0x00)
+
+static void test_usr_scc_cis_loss(void)
+{
+	define_test("BAP/USR/SCC/BV-167-C [USR SRC QoS Configured on CIS loss]",
+			test_setup_server, test_server_state,
+			&cfg_src_enabling_cis_loss,
+			SCC_SRC_ENABLING_CIS_LOSS);
+}
+
 static struct test_config str_snk_ac2_8_1_1 = {
 	.cc = LC3_CONFIG_8_1_AC(1),
 	.qos = LC3_QOS_8_1_1_AC(1),
@@ -7287,6 +7360,7 @@ static void test_scc(void)
 	test_scc_enable();
 	test_scc_disable();
 	test_scc_release();
+	test_usr_scc_cis_loss();
 	test_scc_metadata();
 	test_str_1_1_1_lc3();
 }
-- 
2.43.0

RE: [BlueZ,v2,1/2] shared/bap: Transition ASE to QoS Configured on CIS loss

[bluez.test.bot]

[-- Attachment #1: Type: text/plain, Size: 2577 bytes --]

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=1111249

---Test result---

Test Summary:
CheckPatch                    FAIL      0.85 seconds
GitLint                       PASS      0.58 seconds
BuildEll                      PASS      20.31 seconds
BluezMake                     PASS      653.75 seconds
MakeCheck                     PASS      19.29 seconds
MakeDistcheck                 PASS      248.27 seconds
CheckValgrind                 PASS      296.98 seconds
CheckSmatch                   WARNING   353.24 seconds
bluezmakeextell               PASS      184.97 seconds
IncrementalBuild              PASS      975.52 seconds
ScanBuild                     PASS      1043.13 seconds

Details
##############################
Test: CheckPatch - FAIL
Desc: Run checkpatch.pl script
Output:
[BlueZ,v2,2/2] unit/bap: Add CIS loss test
WARNING:BAD_SIGN_OFF: Non-standard signature: Assisted-by:
#102: 
Assisted-by: ClaudeCode:claude-opus-4.8

ERROR:BAD_SIGN_OFF: Unrecognized email address: 'ClaudeCode:claude-opus-4.8'
#102: 
Assisted-by: ClaudeCode:claude-opus-4.8

/github/workspace/src/patch/14628094.patch total: 1 errors, 1 warnings, 92 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

/github/workspace/src/patch/14628094.patch has style problems, please review.

NOTE: Ignored message types: COMMIT_MESSAGE COMPLEX_MACRO CONST_STRUCT FILE_PATH_CHANGES MISSING_SIGN_OFF PREFER_PACKED SPDX_LICENSE_TAG SPLIT_STRING SSCANF_TO_KSTRTO

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.


##############################
Test: CheckSmatch - WARNING
Desc: Run smatch tool with source
Output:
src/shared/bap.c:317:25: warning: array of flexible structuressrc/shared/bap.c: note: in included file:./src/shared/ascs.h:88:25: warning: array of flexible structuressrc/shared/bap.c:317:25: warning: array of flexible structuressrc/shared/bap.c: note: in included file:./src/shared/ascs.h:88:25: warning: array of flexible structuressrc/shared/bap.c:317:25: warning: array of flexible structuressrc/shared/bap.c: note: in included file:./src/shared/ascs.h:88:25: warning: array of flexible structures


https://github.com/bluez/bluez/pull/2230

---
Regards,
Linux Bluetooth

RE: [BlueZ] shared/bap: Transition ASE to QoS Configured on CIS loss

[bluez.test.bot]

[-- Attachment #1: Type: text/plain, Size: 1600 bytes --]

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=1108825

---Test result---

Test Summary:
CheckPatch                    PASS      0.45 seconds
GitLint                       PASS      0.48 seconds
BuildEll                      PASS      20.19 seconds
BluezMake                     PASS      625.65 seconds
MakeCheck                     PASS      12.74 seconds
MakeDistcheck                 PASS      236.69 seconds
CheckValgrind                 PASS      257.53 seconds
CheckSmatch                   WARNING   326.14 seconds
bluezmakeextell               PASS      165.85 seconds
IncrementalBuild              PASS      622.35 seconds
ScanBuild                     PASS      935.06 seconds

Details
##############################
Test: CheckSmatch - WARNING
Desc: Run smatch tool with source
Output:
src/shared/bap.c:317:25: warning: array of flexible structuressrc/shared/bap.c: note: in included file:./src/shared/ascs.h:88:25: warning: array of flexible structuressrc/shared/bap.c:317:25: warning: array of flexible structuressrc/shared/bap.c: note: in included file:./src/shared/ascs.h:88:25: warning: array of flexible structuressrc/shared/bap.c:317:25: warning: array of flexible structuressrc/shared/bap.c: note: in included file:./src/shared/ascs.h:88:25: warning: array of flexible structures


https://github.com/bluez/bluez/pull/2209

---
Regards,
Linux Bluetooth