diff options
author | Daniel Winkler <danielwinkler@google.com> | 2020-11-06 15:20:19 -0800 |
---|---|---|
committer | Marcel Holtmann <marcel@holtmann.org> | 2020-11-09 13:33:19 +0100 |
commit | 2943d8ede38310db932eb38f91aa1094b471058c (patch) | |
tree | 82486662bd7587bfca94a020dd0e4c87b92f3eff /net/bluetooth | |
parent | f7e0e8b2f1b0a09b527885babda3e912ba820798 (diff) | |
download | linux-2943d8ede38310db932eb38f91aa1094b471058c.tar.gz linux-2943d8ede38310db932eb38f91aa1094b471058c.tar.bz2 linux-2943d8ede38310db932eb38f91aa1094b471058c.zip |
Bluetooth: Resume advertising after LE connection
When an LE connection request is made, advertising is disabled and never
resumed. When a client has an active advertisement, this is disruptive.
This change adds resume logic for client-configured (non-directed)
advertisements after the connection attempt.
The patch was tested by registering an advertisement, initiating an LE
connection from a remote peer, and verifying that the advertisement is
re-activated after the connection is established. This is performed on
Hatch and Kukui Chromebooks.
Signed-off-by: Daniel Winkler <danielwinkler@google.com>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
-rw-r--r-- | net/bluetooth/hci_conn.c | 12 | ||||
-rw-r--r-- | net/bluetooth/hci_request.c | 21 | ||||
-rw-r--r-- | net/bluetooth/hci_request.h | 2 |
3 files changed, 28 insertions, 7 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index d0c1024bf600..4f1cd8063e72 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -758,6 +758,9 @@ static void create_le_conn_complete(struct hci_dev *hdev, u8 status, u16 opcode) conn = hci_lookup_le_connect(hdev); + if (hdev->adv_instance_cnt) + hci_req_resume_adv_instances(hdev); + if (!status) { hci_connect_le_scan_cleanup(conn); goto done; @@ -1067,10 +1070,11 @@ struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, * connections most controllers will refuse to connect if * advertising is enabled, and for slave role connections we * anyway have to disable it in order to start directed - * advertising. + * advertising. Any registered advertisements will be + * re-enabled after the connection attempt is finished. */ if (hci_dev_test_flag(hdev, HCI_LE_ADV)) - __hci_req_disable_advertising(&req); + __hci_req_pause_adv_instances(&req); /* If requested to connect as slave use directed advertising */ if (conn->role == HCI_ROLE_SLAVE) { @@ -1118,6 +1122,10 @@ create_conn: err = hci_req_run(&req, create_le_conn_complete); if (err) { hci_conn_del(conn); + + if (hdev->adv_instance_cnt) + hci_req_resume_adv_instances(hdev); + return ERR_PTR(err); } diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c index 6f12bab4d2fa..fdc6eccef9d1 100644 --- a/net/bluetooth/hci_request.c +++ b/net/bluetooth/hci_request.c @@ -1123,9 +1123,9 @@ static void cancel_adv_timeout(struct hci_dev *hdev) } /* This function requires the caller holds hdev->lock */ -static void hci_suspend_adv_instances(struct hci_request *req) +void __hci_req_pause_adv_instances(struct hci_request *req) { - bt_dev_dbg(req->hdev, "Suspending advertising instances"); + bt_dev_dbg(req->hdev, "Pausing advertising instances"); /* Call to disable any advertisements active on the controller. * This will succeed even if no advertisements are configured. @@ -1138,7 +1138,7 @@ static void hci_suspend_adv_instances(struct hci_request *req) } /* This function requires the caller holds hdev->lock */ -static void hci_resume_adv_instances(struct hci_request *req) +static void __hci_req_resume_adv_instances(struct hci_request *req) { struct adv_info *adv; @@ -1161,6 +1161,17 @@ static void hci_resume_adv_instances(struct hci_request *req) } } +/* This function requires the caller holds hdev->lock */ +int hci_req_resume_adv_instances(struct hci_dev *hdev) +{ + struct hci_request req; + + hci_req_init(&req, hdev); + __hci_req_resume_adv_instances(&req); + + return hci_req_run(&req, NULL); +} + static void suspend_req_complete(struct hci_dev *hdev, u8 status, u16 opcode) { bt_dev_dbg(hdev, "Request complete opcode=0x%x, status=0x%x", opcode, @@ -1214,7 +1225,7 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next) /* Pause other advertisements */ if (hdev->adv_instance_cnt) - hci_suspend_adv_instances(&req); + __hci_req_pause_adv_instances(&req); hdev->advertising_paused = true; hdev->advertising_old_state = old_state; @@ -1279,7 +1290,7 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next) /* Resume other advertisements */ if (hdev->adv_instance_cnt) - hci_resume_adv_instances(&req); + __hci_req_resume_adv_instances(&req); /* Unpause discovery */ hdev->discovery_paused = false; diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h index 6a12e84c66c4..39ee8a18087a 100644 --- a/net/bluetooth/hci_request.h +++ b/net/bluetooth/hci_request.h @@ -71,6 +71,8 @@ void hci_req_add_le_passive_scan(struct hci_request *req); void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next); void hci_req_disable_address_resolution(struct hci_dev *hdev); +void __hci_req_pause_adv_instances(struct hci_request *req); +int hci_req_resume_adv_instances(struct hci_dev *hdev); void hci_req_reenable_advertising(struct hci_dev *hdev); void __hci_req_enable_advertising(struct hci_request *req); void __hci_req_disable_advertising(struct hci_request *req); |