From: Johan Hedberg <johan.hedberg@xxxxxxxxx>
In order to shrink the size of bt_skb_cb, this patch moves the HCI
request related variables into their own req_ctrl struct. Additionall
the L2CAP and HCI request structs are placed inside the same union since
they will never be used at the same time for the same skb.
Signed-off-by: Johan Hedberg <johan.hedberg@xxxxxxxxx>
---
include/net/bluetooth/bluetooth.h | 14 ++++++++++----
net/bluetooth/hci_core.c | 12 ++++++------
net/bluetooth/hci_event.c | 4 ++--
net/bluetooth/hci_request.c | 6 +++---
net/bluetooth/hci_sock.c | 2 +-
5 files changed, 22 insertions(+), 16 deletions(-)
diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index d8367cc7c76e..eeaff4b5cb62 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -278,16 +278,22 @@ struct hci_dev;
typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode);
+struct req_ctrl {
+ bool start;
+ u8 event;
+ hci_req_complete_t complete;
+};
+
struct bt_skb_cb {
__u8 pkt_type;
__u8 force_active;
__u16 opcode;
__u16 expect;
__u8 incoming:1;
- __u8 req_start:1;
- u8 req_event;
- hci_req_complete_t req_complete;
- struct l2cap_ctrl l2cap;
+ union {
+ struct l2cap_ctrl l2cap;
+ struct req_ctrl req;
+ };
};
#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index e6bfeb7b4415..9eaa26754b2d 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3585,7 +3585,7 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
/* Stand-alone HCI commands must be flagged as
* single-command requests.
*/
- bt_cb(skb)->req_start = 1;
+ bt_cb(skb)->req.start = 1;
skb_queue_tail(&hdev->cmd_q, skb);
queue_work(hdev->workqueue, &hdev->cmd_work);
@@ -4263,7 +4263,7 @@ static bool hci_req_is_complete(struct hci_dev *hdev)
if (!skb)
return true;
- return bt_cb(skb)->req_start;
+ return bt_cb(skb)->req.start;
}
static void hci_resend_last(struct hci_dev *hdev)
@@ -4323,14 +4323,14 @@ void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status)
* command queue (hdev->cmd_q).
*/
if (hdev->sent_cmd) {
- req_complete = bt_cb(hdev->sent_cmd)->req_complete;
+ req_complete = bt_cb(hdev->sent_cmd)->req.complete;
if (req_complete) {
/* We must set the complete callback to NULL to
* avoid calling the callback more than once if
* this function gets called again.
*/
- bt_cb(hdev->sent_cmd)->req_complete = NULL;
+ bt_cb(hdev->sent_cmd)->req.complete = NULL;
goto call_complete;
}
@@ -4339,12 +4339,12 @@ void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status)
/* Remove all pending commands belonging to this request */
spin_lock_irqsave(&hdev->cmd_q.lock, flags);
while ((skb = __skb_dequeue(&hdev->cmd_q))) {
- if (bt_cb(skb)->req_start) {
+ if (bt_cb(skb)->req.start) {
__skb_queue_head(&hdev->cmd_q, skb);
break;
}
- req_complete = bt_cb(skb)->req_complete;
+ req_complete = bt_cb(skb)->req.complete;
kfree_skb(skb);
}
spin_unlock_irqrestore(&hdev->cmd_q.lock, flags);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 20f34b861426..7c0f992602f5 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -3125,7 +3125,7 @@ static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb)
atomic_set(&hdev->cmd_cnt, 1);
if (ev->status ||
- (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->req_event))
+ (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->req.event))
hci_req_cmd_complete(hdev, opcode, ev->status);
if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
@@ -5049,7 +5049,7 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
skb_pull(skb, HCI_EVENT_HDR_SIZE);
- if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->req_event == event) {
+ if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->req.event == event) {
struct hci_command_hdr *cmd_hdr = (void *) hdev->sent_cmd->data;
u16 opcode = __le16_to_cpu(cmd_hdr->opcode);
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 55e096d20a0f..8a0b7e319523 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -55,7 +55,7 @@ int hci_req_run(struct hci_request *req, hci_req_complete_t complete)
return -ENODATA;
skb = skb_peek_tail(&req->cmd_q);
- bt_cb(skb)->req_complete = complete;
+ bt_cb(skb)->req.complete = complete;
spin_lock_irqsave(&hdev->cmd_q.lock, flags);
skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q);
@@ -116,9 +116,9 @@ void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
}
if (skb_queue_empty(&req->cmd_q))
- bt_cb(skb)->req_start = 1;
+ bt_cb(skb)->req.start = 1;
- bt_cb(skb)->req_event = event;
+ bt_cb(skb)->req.event = event;
skb_queue_tail(&req->cmd_q, skb);
}
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 85a44a7dc150..2c0abef1aa83 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -1164,7 +1164,7 @@ static int hci_sock_sendmsg(struct socket *sock, struct msghdr *msg,
/* Stand-alone HCI commands must be flagged as
* single-command requests.
*/
- bt_cb(skb)->req_start = 1;
+ bt_cb(skb)->req.start = 1;
skb_queue_tail(&hdev->cmd_q, skb);
queue_work(hdev->workqueue, &hdev->cmd_work);
--
2.1.0
--
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