From: Johan Hedberg <johan.hedberg@xxxxxxxxx>
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@xxxxxxxxx>
---
net/bluetooth/hci_core.c | 52 ++++--------------------------------------
net/bluetooth/hci_event.c | 57 ++++++++++++++++++++++++++++++++++++++++++++---
2 files changed, 58 insertions(+), 51 deletions(-)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 9f88b7c74a80..fef81321bb78 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -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);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index f57bb6236591..682609c45132 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -5032,13 +5032,58 @@ 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) {
@@ -5046,6 +5091,7 @@ 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
@@ -5239,10 +5285,15 @@ 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);
--
2.1.0
--
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