* [PATCH v2] Bluetooth: HCI: Fix not always setting Scan Response/Advertising Data
@ 2022-06-14 17:46 Luiz Augusto von Dentz
2022-06-14 18:07 ` [v2] " bluez.test.bot
2022-06-17 6:18 ` [PATCH v2] " An, Tedd
0 siblings, 2 replies; 3+ messages in thread
From: Luiz Augusto von Dentz @ 2022-06-14 17:46 UTC (permalink / raw)
To: linux-bluetooth
From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The scan response and advertising data needs to be tracked on a per
instance (adv_info) since when these instaces are removed so are their
data, to fix that new flags are introduced which is used to mark when
the data changes and then checked to confirm when the data needs to be
synced with the controller.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
---
v2: Mark scan_rsp_changed when either MGMT_ADV_FLAG_APPEARANCE or
MGMT_ADV_FLAG_LOCAL_NAME have been set.
include/net/bluetooth/hci_core.h | 11 ++++++
net/bluetooth/hci_core.c | 42 ++++++++++----------
net/bluetooth/hci_sync.c | 66 ++++++++++++++++++++++----------
3 files changed, 76 insertions(+), 43 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 5b92a9abe141..15237ee5f761 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -246,8 +246,10 @@ struct adv_info {
__u16 duration;
__u16 adv_data_len;
__u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
+ bool adv_data_changed;
__u16 scan_rsp_len;
__u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
+ bool scan_rsp_changed;
__s8 tx_power;
__u32 min_interval;
__u32 max_interval;
@@ -261,6 +263,15 @@ struct adv_info {
#define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
+#define DATA_CMP(_d1, _l1, _d2, _l2) \
+ (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
+
+#define ADV_DATA_CMP(_adv, _data, _len) \
+ DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
+
+#define SCAN_RSP_CMP(_adv, _data, _len) \
+ DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
+
struct monitored_device {
struct list_head list;
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 6faae50d933d..05c13f639b94 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1727,18 +1727,12 @@ int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
}
adv_instance->flags = flags;
- adv_instance->adv_data_len = adv_data_len;
- adv_instance->scan_rsp_len = scan_rsp_len;
adv_instance->min_interval = min_interval;
adv_instance->max_interval = max_interval;
adv_instance->tx_power = tx_power;
- if (adv_data_len)
- memcpy(adv_instance->adv_data, adv_data, adv_data_len);
-
- if (scan_rsp_len)
- memcpy(adv_instance->scan_rsp_data,
- scan_rsp_data, scan_rsp_len);
+ hci_set_adv_instance_data(hdev, instance, adv_data_len, adv_data,
+ scan_rsp_len, scan_rsp_data);
adv_instance->timeout = timeout;
adv_instance->remaining_time = timeout;
@@ -1761,29 +1755,33 @@ int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
u16 adv_data_len, u8 *adv_data,
u16 scan_rsp_len, u8 *scan_rsp_data)
{
- struct adv_info *adv_instance;
+ struct adv_info *adv;
- adv_instance = hci_find_adv_instance(hdev, instance);
+ adv = hci_find_adv_instance(hdev, instance);
/* If advertisement doesn't exist, we can't modify its data */
- if (!adv_instance)
+ if (!adv)
return -ENOENT;
- if (adv_data_len) {
- memset(adv_instance->adv_data, 0,
- sizeof(adv_instance->adv_data));
- memcpy(adv_instance->adv_data, adv_data, adv_data_len);
- adv_instance->adv_data_len = adv_data_len;
+ if (adv_data_len && ADV_DATA_CMP(adv, adv_data, adv_data_len)) {
+ memset(adv->adv_data, 0, sizeof(adv->adv_data));
+ memcpy(adv->adv_data, adv_data, adv_data_len);
+ adv->adv_data_len = adv_data_len;
+ adv->adv_data_changed = true;
}
- if (scan_rsp_len) {
- memset(adv_instance->scan_rsp_data, 0,
- sizeof(adv_instance->scan_rsp_data));
- memcpy(adv_instance->scan_rsp_data,
- scan_rsp_data, scan_rsp_len);
- adv_instance->scan_rsp_len = scan_rsp_len;
+ if (scan_rsp_len && SCAN_RSP_CMP(adv, scan_rsp_data, scan_rsp_len)) {
+ memset(adv->scan_rsp_data, 0, sizeof(adv->scan_rsp_data));
+ memcpy(adv->scan_rsp_data, scan_rsp_data, scan_rsp_len);
+ adv->scan_rsp_len = scan_rsp_len;
+ adv->scan_rsp_changed = true;
}
+ /* Mark as changed if there are flags which would affect it */
+ if (((adv->flags & MGMT_ADV_FLAG_APPEARANCE) && hdev->appearance) ||
+ adv->flags & MGMT_ADV_FLAG_LOCAL_NAME)
+ adv->scan_rsp_changed = true;
+
return 0;
}
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 0fa013816a9b..e974a888c0f3 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -849,26 +849,38 @@ static int hci_set_ext_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
u8 data[HCI_MAX_EXT_AD_LENGTH];
} pdu;
u8 len;
+ struct adv_info *adv = NULL;
+ int err;
memset(&pdu, 0, sizeof(pdu));
+ if (instance) {
+ adv = hci_find_adv_instance(hdev, instance);
+ if (!adv || !adv->scan_rsp_changed)
+ return 0;
+ }
+
len = eir_create_scan_rsp(hdev, instance, pdu.data);
- if (hdev->scan_rsp_data_len == len &&
- !memcmp(pdu.data, hdev->scan_rsp_data, len))
- return 0;
-
- memcpy(hdev->scan_rsp_data, pdu.data, len);
- hdev->scan_rsp_data_len = len;
-
pdu.cp.handle = instance;
pdu.cp.length = len;
pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
- return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA,
- sizeof(pdu.cp) + len, &pdu.cp,
- HCI_CMD_TIMEOUT);
+ err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA,
+ sizeof(pdu.cp) + len, &pdu.cp,
+ HCI_CMD_TIMEOUT);
+ if (err)
+ return err;
+
+ if (adv) {
+ adv->scan_rsp_changed = false;
+ } else {
+ memcpy(hdev->scan_rsp_data, pdu.data, len);
+ hdev->scan_rsp_data_len = len;
+ }
+
+ return 0;
}
static int __hci_set_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
@@ -1119,27 +1131,39 @@ static int hci_set_ext_adv_data_sync(struct hci_dev *hdev, u8 instance)
u8 data[HCI_MAX_EXT_AD_LENGTH];
} pdu;
u8 len;
+ struct adv_info *adv = NULL;
+ int err;
memset(&pdu, 0, sizeof(pdu));
+ if (instance) {
+ adv = hci_find_adv_instance(hdev, instance);
+ if (!adv || !adv->adv_data_changed)
+ return 0;
+ }
+
len = eir_create_adv_data(hdev, instance, pdu.data);
- /* There's nothing to do if the data hasn't changed */
- if (hdev->adv_data_len == len &&
- memcmp(pdu.data, hdev->adv_data, len) == 0)
- return 0;
-
- memcpy(hdev->adv_data, pdu.data, len);
- hdev->adv_data_len = len;
-
pdu.cp.length = len;
pdu.cp.handle = instance;
pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
- return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_DATA,
- sizeof(pdu.cp) + len, &pdu.cp,
- HCI_CMD_TIMEOUT);
+ err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_DATA,
+ sizeof(pdu.cp) + len, &pdu.cp,
+ HCI_CMD_TIMEOUT);
+ if (err)
+ return err;
+
+ /* Update data if the command succeed */
+ if (adv) {
+ adv->adv_data_changed = false;
+ } else {
+ memcpy(hdev->adv_data, pdu.data, len);
+ hdev->adv_data_len = len;
+ }
+
+ return 0;
}
static int hci_set_adv_data_sync(struct hci_dev *hdev, u8 instance)
--
2.35.3
^ permalink raw reply related [flat|nested] 3+ messages in thread
* RE: [v2] Bluetooth: HCI: Fix not always setting Scan Response/Advertising Data
2022-06-14 17:46 [PATCH v2] Bluetooth: HCI: Fix not always setting Scan Response/Advertising Data Luiz Augusto von Dentz
@ 2022-06-14 18:07 ` bluez.test.bot
2022-06-17 6:18 ` [PATCH v2] " An, Tedd
1 sibling, 0 replies; 3+ messages in thread
From: bluez.test.bot @ 2022-06-14 18:07 UTC (permalink / raw)
To: linux-bluetooth, luiz.dentz
[-- Attachment #1: Type: text/plain, Size: 1097 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=650299
---Test result---
Test Summary:
CheckPatch PASS 1.73 seconds
GitLint PASS 0.73 seconds
SubjectPrefix PASS 0.60 seconds
BuildKernel PASS 31.61 seconds
BuildKernel32 PASS 27.69 seconds
Incremental Build with patchesPASS 36.55 seconds
TestRunner: Setup PASS 488.05 seconds
TestRunner: l2cap-tester PASS 18.50 seconds
TestRunner: bnep-tester PASS 6.18 seconds
TestRunner: mgmt-tester PASS 102.56 seconds
TestRunner: rfcomm-tester PASS 9.22 seconds
TestRunner: sco-tester PASS 9.52 seconds
TestRunner: smp-tester PASS 9.19 seconds
TestRunner: userchan-tester PASS 6.08 seconds
---
Regards,
Linux Bluetooth
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v2] Bluetooth: HCI: Fix not always setting Scan Response/Advertising Data
2022-06-14 17:46 [PATCH v2] Bluetooth: HCI: Fix not always setting Scan Response/Advertising Data Luiz Augusto von Dentz
2022-06-14 18:07 ` [v2] " bluez.test.bot
@ 2022-06-17 6:18 ` An, Tedd
1 sibling, 0 replies; 3+ messages in thread
From: An, Tedd @ 2022-06-17 6:18 UTC (permalink / raw)
To: Luiz Augusto von Dentz, linux-bluetooth@vger.kernel.org
Hi Luiz
I tested with my new test case added to mgmt-tester and passed.
On 6/14/22, 10:46 AM, "Luiz Augusto von Dentz" <luiz.dentz@gmail.com> wrote:
From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The scan response and advertising data needs to be tracked on a per
instance (adv_info) since when these instaces are removed so are their
data, to fix that new flags are introduced which is used to mark when
the data changes and then checked to confirm when the data needs to be
synced with the controller.
Tested-by: Tedd Ho-Jeong An <tedd.an@intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
---
v2: Mark scan_rsp_changed when either MGMT_ADV_FLAG_APPEARANCE or
MGMT_ADV_FLAG_LOCAL_NAME have been set.
include/net/bluetooth/hci_core.h | 11 ++++++
net/bluetooth/hci_core.c | 42 ++++++++++----------
net/bluetooth/hci_sync.c | 66 ++++++++++++++++++++++----------
3 files changed, 76 insertions(+), 43 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 5b92a9abe141..15237ee5f761 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -246,8 +246,10 @@ struct adv_info {
__u16 duration;
__u16 adv_data_len;
__u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
+ bool adv_data_changed;
__u16 scan_rsp_len;
__u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
+ bool scan_rsp_changed;
__s8 tx_power;
__u32 min_interval;
__u32 max_interval;
@@ -261,6 +263,15 @@ struct adv_info {
#define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
+#define DATA_CMP(_d1, _l1, _d2, _l2) \
+ (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
+
+#define ADV_DATA_CMP(_adv, _data, _len) \
+ DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
+
+#define SCAN_RSP_CMP(_adv, _data, _len) \
+ DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
+
struct monitored_device {
struct list_head list;
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 6faae50d933d..05c13f639b94 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1727,18 +1727,12 @@ int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
}
adv_instance->flags = flags;
- adv_instance->adv_data_len = adv_data_len;
- adv_instance->scan_rsp_len = scan_rsp_len;
adv_instance->min_interval = min_interval;
adv_instance->max_interval = max_interval;
adv_instance->tx_power = tx_power;
- if (adv_data_len)
- memcpy(adv_instance->adv_data, adv_data, adv_data_len);
-
- if (scan_rsp_len)
- memcpy(adv_instance->scan_rsp_data,
- scan_rsp_data, scan_rsp_len);
+ hci_set_adv_instance_data(hdev, instance, adv_data_len, adv_data,
+ scan_rsp_len, scan_rsp_data);
adv_instance->timeout = timeout;
adv_instance->remaining_time = timeout;
@@ -1761,29 +1755,33 @@ int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
u16 adv_data_len, u8 *adv_data,
u16 scan_rsp_len, u8 *scan_rsp_data)
{
- struct adv_info *adv_instance;
+ struct adv_info *adv;
- adv_instance = hci_find_adv_instance(hdev, instance);
+ adv = hci_find_adv_instance(hdev, instance);
/* If advertisement doesn't exist, we can't modify its data */
- if (!adv_instance)
+ if (!adv)
return -ENOENT;
- if (adv_data_len) {
- memset(adv_instance->adv_data, 0,
- sizeof(adv_instance->adv_data));
- memcpy(adv_instance->adv_data, adv_data, adv_data_len);
- adv_instance->adv_data_len = adv_data_len;
+ if (adv_data_len && ADV_DATA_CMP(adv, adv_data, adv_data_len)) {
+ memset(adv->adv_data, 0, sizeof(adv->adv_data));
+ memcpy(adv->adv_data, adv_data, adv_data_len);
+ adv->adv_data_len = adv_data_len;
+ adv->adv_data_changed = true;
}
- if (scan_rsp_len) {
- memset(adv_instance->scan_rsp_data, 0,
- sizeof(adv_instance->scan_rsp_data));
- memcpy(adv_instance->scan_rsp_data,
- scan_rsp_data, scan_rsp_len);
- adv_instance->scan_rsp_len = scan_rsp_len;
+ if (scan_rsp_len && SCAN_RSP_CMP(adv, scan_rsp_data, scan_rsp_len)) {
+ memset(adv->scan_rsp_data, 0, sizeof(adv->scan_rsp_data));
+ memcpy(adv->scan_rsp_data, scan_rsp_data, scan_rsp_len);
+ adv->scan_rsp_len = scan_rsp_len;
+ adv->scan_rsp_changed = true;
}
+ /* Mark as changed if there are flags which would affect it */
+ if (((adv->flags & MGMT_ADV_FLAG_APPEARANCE) && hdev->appearance) ||
+ adv->flags & MGMT_ADV_FLAG_LOCAL_NAME)
+ adv->scan_rsp_changed = true;
+
return 0;
}
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 0fa013816a9b..e974a888c0f3 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -849,26 +849,38 @@ static int hci_set_ext_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
u8 data[HCI_MAX_EXT_AD_LENGTH];
} pdu;
u8 len;
+ struct adv_info *adv = NULL;
+ int err;
memset(&pdu, 0, sizeof(pdu));
+ if (instance) {
+ adv = hci_find_adv_instance(hdev, instance);
+ if (!adv || !adv->scan_rsp_changed)
+ return 0;
+ }
+
len = eir_create_scan_rsp(hdev, instance, pdu.data);
- if (hdev->scan_rsp_data_len == len &&
- !memcmp(pdu.data, hdev->scan_rsp_data, len))
- return 0;
-
- memcpy(hdev->scan_rsp_data, pdu.data, len);
- hdev->scan_rsp_data_len = len;
-
pdu.cp.handle = instance;
pdu.cp.length = len;
pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
- return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA,
- sizeof(pdu.cp) + len, &pdu.cp,
- HCI_CMD_TIMEOUT);
+ err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA,
+ sizeof(pdu.cp) + len, &pdu.cp,
+ HCI_CMD_TIMEOUT);
+ if (err)
+ return err;
+
+ if (adv) {
+ adv->scan_rsp_changed = false;
+ } else {
+ memcpy(hdev->scan_rsp_data, pdu.data, len);
+ hdev->scan_rsp_data_len = len;
+ }
+
+ return 0;
}
static int __hci_set_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
@@ -1119,27 +1131,39 @@ static int hci_set_ext_adv_data_sync(struct hci_dev *hdev, u8 instance)
u8 data[HCI_MAX_EXT_AD_LENGTH];
} pdu;
u8 len;
+ struct adv_info *adv = NULL;
+ int err;
memset(&pdu, 0, sizeof(pdu));
+ if (instance) {
+ adv = hci_find_adv_instance(hdev, instance);
+ if (!adv || !adv->adv_data_changed)
+ return 0;
+ }
+
len = eir_create_adv_data(hdev, instance, pdu.data);
- /* There's nothing to do if the data hasn't changed */
- if (hdev->adv_data_len == len &&
- memcmp(pdu.data, hdev->adv_data, len) == 0)
- return 0;
-
- memcpy(hdev->adv_data, pdu.data, len);
- hdev->adv_data_len = len;
-
pdu.cp.length = len;
pdu.cp.handle = instance;
pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
- return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_DATA,
- sizeof(pdu.cp) + len, &pdu.cp,
- HCI_CMD_TIMEOUT);
+ err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_DATA,
+ sizeof(pdu.cp) + len, &pdu.cp,
+ HCI_CMD_TIMEOUT);
+ if (err)
+ return err;
+
+ /* Update data if the command succeed */
+ if (adv) {
+ adv->adv_data_changed = false;
+ } else {
+ memcpy(hdev->adv_data, pdu.data, len);
+ hdev->adv_data_len = len;
+ }
+
+ return 0;
}
static int hci_set_adv_data_sync(struct hci_dev *hdev, u8 instance)
--
2.35.3
Regards,
Tedd Ho-Jeong An
^ permalink raw reply [flat|nested] 3+ messages in thread
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2022-06-14 17:46 [PATCH v2] Bluetooth: HCI: Fix not always setting Scan Response/Advertising Data Luiz Augusto von Dentz
2022-06-14 18:07 ` [v2] " bluez.test.bot
2022-06-17 6:18 ` [PATCH v2] " An, Tedd
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