diff mbox series

[1/1] Bluetooth: hci_event: Fix setting of broadcast qos interval and latency

Message ID 20240416102501.42996-2-vlad.pruteanu@nxp.com (mailing list archive)
State Superseded
Headers show
Series Bluetooth: hci_event: Fix setting of broadcast qos interval and latency | expand

Checks

Context Check Description
tedd_an/pre-ci_am success Success
tedd_an/CheckPatch success CheckPatch PASS
tedd_an/GitLint success Gitlint PASS
tedd_an/SubjectPrefix success Gitlint PASS
tedd_an/BuildKernel success BuildKernel PASS
tedd_an/CheckAllWarning success CheckAllWarning PASS
tedd_an/CheckSparse warning CheckSparse WARNING net/bluetooth/hci_event.c: note: in included file (through include/net/bluetooth/hci_core.h):
tedd_an/CheckSmatch fail CheckSparse: FAIL: Segmentation fault (core dumped) make[4]: *** [scripts/Makefile.build:244: net/bluetooth/hci_core.o] Error 139 make[4]: *** Deleting file 'net/bluetooth/hci_core.o' make[3]: *** [scripts/Makefile.build:485: net/bluetooth] Error 2 make[2]: *** [scripts/Makefile.build:485: net] Error 2 make[2]: *** Waiting for unfinished jobs.... Segmentation fault (core dumped) make[4]: *** [scripts/Makefile.build:244: drivers/bluetooth/bcm203x.o] Error 139 make[4]: *** Deleting file 'drivers/bluetooth/bcm203x.o' make[4]: *** Waiting for unfinished jobs.... Segmentation fault (core dumped) make[4]: *** [scripts/Makefile.build:244: drivers/bluetooth/bpa10x.o] Error 139 make[4]: *** Deleting file 'drivers/bluetooth/bpa10x.o' make[3]: *** [scripts/Makefile.build:485: drivers/bluetooth] Error 2 make[2]: *** [scripts/Makefile.build:485: drivers] Error 2 make[1]: *** [/github/workspace/src/src/Makefile:1919: .] Error 2 make: *** [Makefile:240: __sub-make] Error 2
tedd_an/BuildKernel32 success BuildKernel32 PASS
tedd_an/TestRunnerSetup success TestRunnerSetup PASS
tedd_an/TestRunner_l2cap-tester success TestRunner PASS
tedd_an/TestRunner_iso-tester fail TestRunner_iso-tester: Total: 122, Passed: 121 (99.2%), Failed: 1, Not Run: 0
tedd_an/TestRunner_bnep-tester success TestRunner PASS
tedd_an/TestRunner_mgmt-tester fail TestRunner_mgmt-tester: Total: 492, Passed: 489 (99.4%), Failed: 1, Not Run: 2
tedd_an/TestRunner_rfcomm-tester success TestRunner PASS
tedd_an/TestRunner_sco-tester success TestRunner PASS
tedd_an/TestRunner_ioctl-tester success TestRunner PASS
tedd_an/TestRunner_mesh-tester fail TestRunner_mesh-tester: Total: 10, Passed: 9 (90.0%), Failed: 1, Not Run: 0
tedd_an/TestRunner_smp-tester success TestRunner PASS
tedd_an/TestRunner_userchan-tester success TestRunner PASS
tedd_an/IncrementalBuild success Incremental Build PASS

Commit Message

Vlad Pruteanu April 16, 2024, 10:25 a.m. UTC
The latency parameter of the broadcast qos is calculated wrongly.

BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 6, Part G

For framed PDUs:
Transport_Latency_BIG = BIG_Sync_Delay + PTO x (NSE / BN -
IRC) * ISO_Interval + ISO_Interval + SDU_Interval

For unframed PDUs:
Transport_Latency = BIG_Sync_Delay + (PTO x (NSE / BN - IRC) +
1) x ISO_Interval - SDU_Interval

For broadcast sink the latency should be taken directly from the
BIG Sync Established event and for the source it should be taken
from the Create BIG Complete event.

The interval parameter of the broadcast qos reffers to the SDU
Interval and shouldn't be set based on the latency. The Host will
read this value from the BASE.

Signed-off-by: Vlad Pruteanu <vlad.pruteanu@nxp.com>
---
 net/bluetooth/hci_event.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

Comments

bluez.test.bot@gmail.com April 16, 2024, 10:56 a.m. UTC | #1
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=845006

---Test result---

Test Summary:
CheckPatch                    PASS      0.60 seconds
GitLint                       PASS      0.28 seconds
SubjectPrefix                 PASS      0.10 seconds
BuildKernel                   PASS      30.90 seconds
CheckAllWarning               PASS      33.73 seconds
CheckSparse                   WARNING   42.95 seconds
CheckSmatch                   FAIL      37.49 seconds
BuildKernel32                 PASS      29.91 seconds
TestRunnerSetup               PASS      538.69 seconds
TestRunner_l2cap-tester       PASS      18.36 seconds
TestRunner_iso-tester         FAIL      33.38 seconds
TestRunner_bnep-tester        PASS      4.67 seconds
TestRunner_mgmt-tester        FAIL      109.90 seconds
TestRunner_rfcomm-tester      PASS      7.27 seconds
TestRunner_sco-tester         PASS      15.03 seconds
TestRunner_ioctl-tester       PASS      7.70 seconds
TestRunner_mesh-tester        FAIL      5.87 seconds
TestRunner_smp-tester         PASS      6.72 seconds
TestRunner_userchan-tester    PASS      4.83 seconds
IncrementalBuild              PASS      28.16 seconds

Details
##############################
Test: CheckSparse - WARNING
Desc: Run sparse tool with linux kernel
Output:
net/bluetooth/hci_event.c: note: in included file (through include/net/bluetooth/hci_core.h):
##############################
Test: CheckSmatch - FAIL
Desc: Run smatch tool with source
Output:

Segmentation fault (core dumped)
make[4]: *** [scripts/Makefile.build:244: net/bluetooth/hci_core.o] Error 139
make[4]: *** Deleting file 'net/bluetooth/hci_core.o'
make[3]: *** [scripts/Makefile.build:485: net/bluetooth] Error 2
make[2]: *** [scripts/Makefile.build:485: net] Error 2
make[2]: *** Waiting for unfinished jobs....
Segmentation fault (core dumped)
make[4]: *** [scripts/Makefile.build:244: drivers/bluetooth/bcm203x.o] Error 139
make[4]: *** Deleting file 'drivers/bluetooth/bcm203x.o'
make[4]: *** Waiting for unfinished jobs....
Segmentation fault (core dumped)
make[4]: *** [scripts/Makefile.build:244: drivers/bluetooth/bpa10x.o] Error 139
make[4]: *** Deleting file 'drivers/bluetooth/bpa10x.o'
make[3]: *** [scripts/Makefile.build:485: drivers/bluetooth] Error 2
make[2]: *** [scripts/Makefile.build:485: drivers] Error 2
make[1]: *** [/github/workspace/src/src/Makefile:1919: .] Error 2
make: *** [Makefile:240: __sub-make] Error 2
##############################
Test: TestRunner_iso-tester - FAIL
Desc: Run iso-tester with test-runner
Output:
Total: 122, Passed: 121 (99.2%), Failed: 1, Not Run: 0

Failed Test Cases
ISO Connect2 Suspend - Success                       Failed       6.244 seconds
##############################
Test: TestRunner_mgmt-tester - FAIL
Desc: Run mgmt-tester with test-runner
Output:
Total: 492, Passed: 489 (99.4%), Failed: 1, Not Run: 2

Failed Test Cases
LL Privacy - Set Device Flag 1 (Device Privacy)      Failed       0.130 seconds
##############################
Test: TestRunner_mesh-tester - FAIL
Desc: Run mesh-tester with test-runner
Output:
Total: 10, Passed: 9 (90.0%), Failed: 1, Not Run: 0

Failed Test Cases
Mesh - Send cancel - 1                               Failed       0.095 seconds


---
Regards,
Linux Bluetooth
Luiz Augusto von Dentz April 16, 2024, 2:31 p.m. UTC | #2
Hi Vlad,

On Tue, Apr 16, 2024 at 6:25 AM Vlad Pruteanu <vlad.pruteanu@nxp.com> wrote:
>
> The latency parameter of the broadcast qos is calculated wrongly.
>
> BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 6, Part G
>
> For framed PDUs:
> Transport_Latency_BIG = BIG_Sync_Delay + PTO x (NSE / BN -
> IRC) * ISO_Interval + ISO_Interval + SDU_Interval
>
> For unframed PDUs:
> Transport_Latency = BIG_Sync_Delay + (PTO x (NSE / BN - IRC) +
> 1) x ISO_Interval - SDU_Interval
>
> For broadcast sink the latency should be taken directly from the
> BIG Sync Established event and for the source it should be taken
> from the Create BIG Complete event.
>
> The interval parameter of the broadcast qos reffers to the SDU
> Interval and shouldn't be set based on the latency. The Host will
> read this value from the BASE.
>
> Signed-off-by: Vlad Pruteanu <vlad.pruteanu@nxp.com>
> ---
>  net/bluetooth/hci_event.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
> index 868ffccff773..dff4bedc3e9b 100644
> --- a/net/bluetooth/hci_event.c
> +++ b/net/bluetooth/hci_event.c
> @@ -6983,6 +6983,8 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
>
>                 if (!ev->status) {
>                         conn->state = BT_CONNECTED;
> +                       conn->iso_qos.bcast.out.latency =
> +                               DIV_ROUND_CLOSEST(get_unaligned_le24(ev->transport_delay), 1000);

You should probably add comments quoting the spec, also you quoted in
the description that framed vs unframed but then the code does not
attempt to differentiate, so perhaps that is not really important and
then we can remove it, the important part is what shall be used as
transport latency.

>                         set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
>                         rcu_read_unlock();
>                         hci_debugfs_create_conn(conn);
> @@ -7029,7 +7031,6 @@ static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
>
>         for (i = 0; i < ev->num_bis; i++) {
>                 u16 handle = le16_to_cpu(ev->bis[i]);
> -               __le32 interval;
>
>                 bis = hci_conn_hash_lookup_handle(hdev, handle);
>                 if (!bis) {
> @@ -7044,11 +7045,10 @@ static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
>                         set_bit(HCI_CONN_PA_SYNC, &bis->flags);
>
>                 bis->iso_qos.bcast.big = ev->handle;
> -               memset(&interval, 0, sizeof(interval));
> -               memcpy(&interval, ev->latency, sizeof(ev->latency));
> -               bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
> -               /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
> -               bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
> +               /* Convert Transport Latency (us) to Latency (msec) */
> +               bis->iso_qos.bcast.in.latency =
> +                       DIV_ROUND_CLOSEST(get_unaligned_le24(ev->latency),
> +                                         1000);

Ditto as above.

>                 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
>
>                 if (!ev->status) {
> --
> 2.40.1
>
diff mbox series

Patch

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 868ffccff773..dff4bedc3e9b 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -6983,6 +6983,8 @@  static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 
 		if (!ev->status) {
 			conn->state = BT_CONNECTED;
+			conn->iso_qos.bcast.out.latency =
+				DIV_ROUND_CLOSEST(get_unaligned_le24(ev->transport_delay), 1000);
 			set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
 			rcu_read_unlock();
 			hci_debugfs_create_conn(conn);
@@ -7029,7 +7031,6 @@  static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
 
 	for (i = 0; i < ev->num_bis; i++) {
 		u16 handle = le16_to_cpu(ev->bis[i]);
-		__le32 interval;
 
 		bis = hci_conn_hash_lookup_handle(hdev, handle);
 		if (!bis) {
@@ -7044,11 +7045,10 @@  static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
 			set_bit(HCI_CONN_PA_SYNC, &bis->flags);
 
 		bis->iso_qos.bcast.big = ev->handle;
-		memset(&interval, 0, sizeof(interval));
-		memcpy(&interval, ev->latency, sizeof(ev->latency));
-		bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
-		/* Convert ISO Interval (1.25 ms slots) to latency (ms) */
-		bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
+		/* Convert Transport Latency (us) to Latency (msec) */
+		bis->iso_qos.bcast.in.latency =
+			DIV_ROUND_CLOSEST(get_unaligned_le24(ev->latency),
+					  1000);
 		bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
 
 		if (!ev->status) {