When initializing a controller make sure to read out the number of
supported IAC and store its result. This value is needed to determine
if limited discoverable for BR/EDR can be configured or not.
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
---
include/net/bluetooth/hci.h | 6 ++++++
include/net/bluetooth/hci_core.h | 1 +
net/bluetooth/hci_core.c | 6 +++++-
net/bluetooth/hci_event.c | 19 +++++++++++++++++++
4 files changed, 31 insertions(+), 1 deletion(-)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index c8a91cb..8567f44 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -815,6 +815,12 @@ struct hci_cp_host_buffer_size {
__le16 sco_max_pkt;
} __packed;
+#define HCI_OP_READ_NUM_SUPPORTED_IAC 0x0c38
+struct hci_rp_read_num_supported_iac {
+ __u8 status;
+ __u8 num_iac;
+} __packed;
+
#define HCI_OP_WRITE_INQUIRY_MODE 0x0c45
#define HCI_MAX_EIR_LENGTH 240
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 0326b16..4e20842 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -159,6 +159,7 @@ struct hci_dev {
__u16 manufacturer;
__u16 lmp_subver;
__u16 voice_setting;
+ __u8 num_iac;
__u8 io_capability;
__s8 inq_tx_power;
__u16 page_scan_interval;
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 0e05ede..b5ef05e 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -370,6 +370,9 @@ static void bredr_setup(struct hci_request *req)
/* Read Voice Setting */
hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL);
+ /* Read Number of Supported IAC */
+ hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL);
+
/* Clear Event Filters */
flt_type = HCI_FLT_CLEAR_ALL;
hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type);
@@ -2271,7 +2274,8 @@ struct hci_dev *hci_alloc_dev(void)
hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1);
hdev->esco_type = (ESCO_HV1);
hdev->link_mode = (HCI_LM_ACCEPT);
- hdev->io_capability = 0x03; /* No Input No Output */
+ hdev->num_iac = 0x01; /* One IAC support is mandatory */
+ hdev->io_capability = 0x03; /* No Input No Output */
hdev->inq_tx_power = HCI_TX_POWER_INVALID;
hdev->adv_tx_power = HCI_TX_POWER_INVALID;
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index da2bc3d..5391469 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -418,6 +418,21 @@ static void hci_cc_write_voice_setting(struct hci_dev *hdev,
hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
}
+static void hci_cc_read_num_supported_iac(struct hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ struct hci_rp_read_num_supported_iac *rp = (void *) skb->data;
+
+ BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
+
+ if (rp->status)
+ return;
+
+ hdev->num_iac = rp->num_iac;
+
+ BT_DBG("%s num iac %d", hdev->name, hdev->num_iac);
+}
+
static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
{
__u8 status = *((__u8 *) skb->data);
@@ -2135,6 +2150,10 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_cc_write_voice_setting(hdev, skb);
break;
+ case HCI_OP_READ_NUM_SUPPORTED_IAC:
+ hci_cc_read_num_supported_iac(hdev, skb);
+ break;
+
case HCI_OP_WRITE_SSP_MODE:
hci_cc_write_ssp_mode(hdev, skb);
break;
--
1.8.3.1
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