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[Bluetooth] Add support for handling simple eSCO links

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With the Bluetooth 1.2 specification the Extended SCO feature for
better audio connections was introduced. So far the Bluetooth core
wasn't able to handle any eSCO connections correctly. This patch
adds simple eSCO support while keeping backward compatibility with
older devices.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Marcel Holtmann
2007-10-20 14:55:10 +02:00
committed by David S. Miller
parent dae6a0f663
commit b6a0dc8224
5 changed files with 151 additions and 22 deletions
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22
net/bluetooth/hci_core.c
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@ -1361,6 +1361,26 @@ static inline void hci_sched_sco(struct hci_dev *hdev)
}
}
static inline void hci_sched_esco(struct hci_dev *hdev)
{
struct hci_conn *conn;
struct sk_buff *skb;
int quote;
BT_DBG("%s", hdev->name);
while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, &quote))) {
while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
BT_DBG("skb %p len %d", skb, skb->len);
hci_send_frame(skb);
conn->sent++;
if (conn->sent == ~0)
conn->sent = 0;
}
}
}
static void hci_tx_task(unsigned long arg)
{
struct hci_dev *hdev = (struct hci_dev *) arg;
@ -1376,6 +1396,8 @@ static void hci_tx_task(unsigned long arg)
hci_sched_sco(hdev);
hci_sched_esco(hdev);
/* Send next queued raw (unknown type) packet */
while ((skb = skb_dequeue(&hdev->raw_q)))
hci_send_frame(skb);