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Bluetooth: AMP: Write remote AMP Assoc 

When receiving HCI Command Status after HCI Create Physical Link
execute HCI Write Remote AMP Assoc command to AMP controller.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Andrei Emeltchenko 2012-09-27 17:26:20 +03:00 committed by Gustavo Padovan
parent a02226d6ff
commit 93c284ee90
4 changed files with 113 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/net/bluetooth/amp.h
View File

@ -39,5 +39,7 @@ void amp_read_loc_assoc_frag(struct hci_dev *hdev, u8 phy_handle);
void amp_read_loc_assoc(struct hci_dev *hdev, struct amp_mgr *mgr);
void amp_create_phylink(struct hci_dev *hdev, struct amp_mgr *mgr,
struct hci_conn *hcon);
void amp_write_remote_assoc(struct hci_dev *hdev, u8 handle);
void amp_write_rem_assoc_continue(struct hci_dev *hdev, u8 handle);
#endif /* __AMP_H */

2
include/net/bluetooth/hci_core.h
View File

@ -127,6 +127,8 @@ struct le_scan_params {
struct amp_assoc {
__u16 len;
__u16 offset;
__u16 rem_len;
__u16 len_so_far;
__u8 data[HCI_MAX_AMP_ASSOC_SIZE];
};

80
net/bluetooth/amp.c
View File

@ -233,6 +233,86 @@ void amp_read_loc_assoc(struct hci_dev *hdev, struct amp_mgr *mgr)
hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_ASSOC, sizeof(cp), &cp);
}
/* Write AMP Assoc data fragments, returns true with last fragment written*/
static bool amp_write_rem_assoc_frag(struct hci_dev *hdev,
struct hci_conn *hcon)
{
struct hci_cp_write_remote_amp_assoc *cp;
struct amp_mgr *mgr = hcon->amp_mgr;
struct amp_ctrl *ctrl;
u16 frag_len, len;
ctrl = amp_ctrl_lookup(mgr, hcon->remote_id);
if (!ctrl)
return false;
if (!ctrl->assoc_rem_len) {
BT_DBG("all fragments are written");
ctrl->assoc_rem_len = ctrl->assoc_len;
ctrl->assoc_len_so_far = 0;
amp_ctrl_put(ctrl);
return true;
}
frag_len = min_t(u16, 248, ctrl->assoc_rem_len);
len = frag_len + sizeof(*cp);
cp = kzalloc(len, GFP_KERNEL);
if (!cp) {
amp_ctrl_put(ctrl);
return false;
}
BT_DBG("hcon %p ctrl %p frag_len %u assoc_len %u rem_len %u",
hcon, ctrl, frag_len, ctrl->assoc_len, ctrl->assoc_rem_len);
cp->phy_handle = hcon->handle;
cp->len_so_far = cpu_to_le16(ctrl->assoc_len_so_far);
cp->rem_len = cpu_to_le16(ctrl->assoc_rem_len);
memcpy(cp->frag, ctrl->assoc, frag_len);
ctrl->assoc_len_so_far += frag_len;
ctrl->assoc_rem_len -= frag_len;
amp_ctrl_put(ctrl);
hci_send_cmd(hdev, HCI_OP_WRITE_REMOTE_AMP_ASSOC, len, cp);
kfree(cp);
return false;
}
void amp_write_rem_assoc_continue(struct hci_dev *hdev, u8 handle)
{
struct hci_conn *hcon;
BT_DBG("%s phy handle 0x%2.2x", hdev->name, handle);
hcon = hci_conn_hash_lookup_handle(hdev, handle);
if (!hcon)
return;
amp_write_rem_assoc_frag(hdev, hcon);
}
void amp_write_remote_assoc(struct hci_dev *hdev, u8 handle)
{
struct hci_conn *hcon;
BT_DBG("%s phy handle 0x%2.2x", hdev->name, handle);
hcon = hci_conn_hash_lookup_handle(hdev, handle);
if (!hcon)
return;
BT_DBG("%s phy handle 0x%2.2x hcon %p", hdev->name, handle, hcon);
amp_write_rem_assoc_frag(hdev, hcon);
}
void amp_create_phylink(struct hci_dev *hdev, struct amp_mgr *mgr,
struct hci_conn *hcon)
{

29
net/bluetooth/hci_event.c
View File

@ -1215,6 +1215,20 @@ static void hci_cc_write_le_host_supported(struct hci_dev *hdev,
hci_req_complete(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED, status);
}
static void hci_cc_write_remote_amp_assoc(struct hci_dev *hdev,
struct sk_buff *skb)
{
struct hci_rp_write_remote_amp_assoc *rp = (void *) skb->data;
BT_DBG("%s status 0x%2.2x phy_handle 0x%2.2x",
hdev->name, rp->status, rp->phy_handle);
if (rp->status)
return;
amp_write_rem_assoc_continue(hdev, rp->phy_handle);
}
static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
{
BT_DBG("%s status 0x%2.2x", hdev->name, status);
@ -1700,7 +1714,18 @@ static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
static void hci_cs_create_phylink(struct hci_dev *hdev, u8 status)
{
struct hci_cp_create_phy_link *cp;
BT_DBG("%s status 0x%2.2x", hdev->name, status);
if (status)
return;
cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_PHY_LINK);
if (!cp)
return;
amp_write_remote_assoc(hdev, cp->phy_handle);
}
static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
@ -2436,6 +2461,10 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_cc_write_le_host_supported(hdev, skb);
break;
case HCI_OP_WRITE_REMOTE_AMP_ASSOC:
hci_cc_write_remote_amp_assoc(hdev, skb);
break;
default:
BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode);
break;