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Bluetooth: Move hci_get_cmd_complete() to hci_event.c

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To make the hci_req_run_skb() API consistent with hci_cmd_sync_ev()
the callback should receive the cmd_complete parameters in the 'normal'
case and the full HCI event if a special event was expected. This patch
moves the hci_get_cmd_complete() function from hci_core.c to hci_event.c
where it's used to strip the skb from the needed headers before passing
it on to the callback.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2015-04-02 13:41:12 +03:00 committed by Marcel Holtmann
parent abe66a4d03
commit 757aa0b56d
2 changed files with 58 additions and 51 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
net/bluetooth/hci_core.c
View File

@ -166,53 +166,6 @@ static void hci_req_cancel(struct hci_dev *hdev, int err)
}
}
static struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
u8 event, struct sk_buff *skb)
{
struct hci_ev_cmd_complete *ev;
struct hci_event_hdr *hdr;
if (!skb)
return ERR_PTR(-ENODATA);
if (skb->len < sizeof(*hdr)) {
BT_ERR("Too short HCI event");
goto failed;
}
hdr = (void *) skb->data;
skb_pull(skb, HCI_EVENT_HDR_SIZE);
if (event) {
if (hdr->evt != event)
goto failed;
return skb;
}
if (hdr->evt != HCI_EV_CMD_COMPLETE) {
BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt);
goto failed;
}
if (skb->len < sizeof(*ev)) {
BT_ERR("Too short cmd_complete event");
goto failed;
}
ev = (void *) skb->data;
skb_pull(skb, sizeof(*ev));
if (opcode == __le16_to_cpu(ev->opcode))
return skb;
BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
__le16_to_cpu(ev->opcode));
failed:
kfree_skb(skb);
return ERR_PTR(-ENODATA);
}
struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
const void *param, u8 event, u32 timeout)
{
@ -271,7 +224,10 @@ struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
return ERR_PTR(err);
}
return hci_get_cmd_complete(hdev, opcode, event, skb);
if (!skb)
return ERR_PTR(-ENODATA);
return skb;
}
EXPORT_SYMBOL(__hci_cmd_sync_ev);

57
net/bluetooth/hci_event.c
View File

@ -5043,13 +5043,58 @@ static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb)
amp_read_loc_assoc_final_data(hdev, hcon);
}
static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
u8 event, struct sk_buff *skb)
{
struct hci_ev_cmd_complete *ev;
struct hci_event_hdr *hdr;
if (!skb)
return false;
if (skb->len < sizeof(*hdr)) {
BT_ERR("Too short HCI event");
return false;
}
hdr = (void *) skb->data;
skb_pull(skb, HCI_EVENT_HDR_SIZE);
if (event) {
if (hdr->evt != event)
return false;
return true;
}
if (hdr->evt != HCI_EV_CMD_COMPLETE) {
BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt);
return false;
}
if (skb->len < sizeof(*ev)) {
BT_ERR("Too short cmd_complete event");
return false;
}
ev = (void *) skb->data;
skb_pull(skb, sizeof(*ev));
if (opcode != __le16_to_cpu(ev->opcode)) {
BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
__le16_to_cpu(ev->opcode));
return false;
}
return true;
}
void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_event_hdr *hdr = (void *) skb->data;
hci_req_complete_t req_complete = NULL;
hci_req_complete_skb_t req_complete_skb = NULL;
struct sk_buff *orig_skb = NULL;
u8 status = 0, event = hdr->evt;
u8 status = 0, event = hdr->evt, req_evt = 0;
u16 opcode = HCI_OP_NOP;
if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->req.event == event) {
@ -5057,6 +5102,7 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
opcode = __le16_to_cpu(cmd_hdr->opcode);
hci_req_cmd_complete(hdev, opcode, status, &req_complete,
&req_complete_skb);
req_evt = event;
}
/* If it looks like we might end up having to call
@ -5250,10 +5296,15 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
break;
}
if (req_complete)
if (req_complete) {
req_complete(hdev, status, opcode);
else if (req_complete_skb)
} else if (req_complete_skb) {
if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
kfree_skb(orig_skb);
orig_skb = NULL;
}
req_complete_skb(hdev, status, opcode, orig_skb);
}
kfree_skb(orig_skb);
kfree_skb(skb);