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Bluetooth: Parameters for outgoing SCO connections

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In order to establish a transparent SCO connection, the correct settings
must be specified in the Setup Synchronous Connection request. For that,
a setting field is added to ACL connection data to set up the desired
parameters. The patch also removes usage of hdev->voice_setting in CVSD
connection and makes use of T2 parameters for transparent data.

Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Frédéric Dalleau 2013-08-19 14:23:59 +02:00 committed by Gustavo Padovan
parent 2f69a82acf
commit 10c62ddc6f
3 changed files with 23 additions and 8 deletions
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5
include/net/bluetooth/hci_core.h
View File

@ -320,6 +320,7 @@ struct hci_conn {
__u32 passkey_notify;
__u8 passkey_entered;
__u16 disc_timeout;
__u16 setting;
unsigned long flags;
__u8 remote_cap;
@ -584,8 +585,8 @@ struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
__u8 dst_type, __u8 sec_level, __u8 auth_type);
struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type,
bdaddr_t *dst);
struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
__u16 setting);
int hci_conn_check_link_mode(struct hci_conn *conn);
int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);

24
net/bluetooth/hci_conn.c
View File

@ -185,13 +185,24 @@ void hci_setup_sync(struct hci_conn *conn, __u16 handle)
conn->attempt++;
cp.handle = cpu_to_le16(handle);
cp.pkt_type = cpu_to_le16(conn->pkt_type);
cp.tx_bandwidth = __constant_cpu_to_le32(0x00001f40);
cp.rx_bandwidth = __constant_cpu_to_le32(0x00001f40);
cp.max_latency = __constant_cpu_to_le16(0xffff);
cp.voice_setting = cpu_to_le16(hdev->voice_setting);
cp.retrans_effort = 0xff;
cp.voice_setting = cpu_to_le16(conn->setting);
switch (conn->setting & SCO_AIRMODE_MASK) {
case SCO_AIRMODE_TRANSP:
cp.pkt_type = __constant_cpu_to_le16(EDR_ESCO_MASK &
~ESCO_2EV3);
cp.max_latency = __constant_cpu_to_le16(0x000d);
cp.retrans_effort = 0x02;
break;
case SCO_AIRMODE_CVSD:
cp.pkt_type = cpu_to_le16(conn->pkt_type);
cp.max_latency = __constant_cpu_to_le16(0xffff);
cp.retrans_effort = 0xff;
break;
}
hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp);
}
@ -560,7 +571,8 @@ static struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
return acl;
}
struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst)
struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
__u16 setting)
{
struct hci_conn *acl;
struct hci_conn *sco;
@ -583,6 +595,8 @@ struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst)
hci_conn_hold(sco);
sco->setting = setting;
if (acl->state == BT_CONNECTED &&
(sco->state == BT_OPEN || sco->state == BT_CLOSED)) {
set_bit(HCI_CONN_POWER_SAVE, &acl->flags);

2
net/bluetooth/sco.c
View File

@ -176,7 +176,7 @@ static int sco_connect(struct sock *sk)
else
type = SCO_LINK;
hcon = hci_connect_sco(hdev, type, dst);
hcon = hci_connect_sco(hdev, type, dst, sco_pi(sk)->setting);
if (IS_ERR(hcon)) {
err = PTR_ERR(hcon);
goto done;