[Bluetooth]: Move packet type into the SKB control buffer

This patch moves the usage of packet type into the SKB control
buffer. After this patch it is now possible to shrink the sk_buff
structure and redefine its pkt_type.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 9 deletions

diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c
index 858fddb046de..0ee324e1265d 100644
--- a/drivers/bluetooth/hci_bcsp.c
+++ b/drivers/bluetooth/hci_bcsp.c
@@ -149,7 +149,7 @@ static int bcsp_enqueue(struct hci_uart *hu, struct sk_buff *skb)
                 return 0;
         }
 
-        switch (skb->pkt_type) {
+        switch (bt_cb(skb)->pkt_type) {
         case HCI_ACLDATA_PKT:
         case HCI_COMMAND_PKT:
                 skb_queue_tail(&bcsp->rel, skb);
@@ -227,7 +227,7 @@ static struct sk_buff *bcsp_prepare_pkt(struct bcsp_struct *bcsp, u8 *data,
         if (!nskb)
                 return NULL;
 
-        nskb->pkt_type = pkt_type;
+        bt_cb(nskb)->pkt_type = pkt_type;
 
         bcsp_slip_msgdelim(nskb);
 
@@ -286,7 +286,7 @@ static struct sk_buff *bcsp_dequeue(struct hci_uart *hu)
            since they have priority */
 
         if ((skb = skb_dequeue(&bcsp->unrel)) != NULL) {
-                struct sk_buff *nskb = bcsp_prepare_pkt(bcsp, skb->data, skb->len, skb->pkt_type);
+                struct sk_buff *nskb = bcsp_prepare_pkt(bcsp, skb->data, skb->len, bt_cb(skb)->pkt_type);
                 if (nskb) {
                         kfree_skb(skb);
                         return nskb;
@@ -303,7 +303,7 @@ static struct sk_buff *bcsp_dequeue(struct hci_uart *hu)
         spin_lock_irqsave(&bcsp->unack.lock, flags);
 
         if (bcsp->unack.qlen < BCSP_TXWINSIZE && (skb = skb_dequeue(&bcsp->rel)) != NULL) {
-                struct sk_buff *nskb = bcsp_prepare_pkt(bcsp, skb->data, skb->len, skb->pkt_type);
+                struct sk_buff *nskb = bcsp_prepare_pkt(bcsp, skb->data, skb->len, bt_cb(skb)->pkt_type);
                 if (nskb) {
                         __skb_queue_tail(&bcsp->unack, skb);
                         mod_timer(&bcsp->tbcsp, jiffies + HZ / 4);
@@ -401,7 +401,7 @@ static void bcsp_handle_le_pkt(struct hci_uart *hu)
                 if (!nskb)
                         return;
                 memcpy(skb_put(nskb, 4), conf_rsp_pkt, 4);
-                nskb->pkt_type = BCSP_LE_PKT;
+                bt_cb(nskb)->pkt_type = BCSP_LE_PKT;
 
                 skb_queue_head(&bcsp->unrel, nskb);
                 hci_uart_tx_wakeup(hu);
@@ -483,14 +483,14 @@ static inline void bcsp_complete_rx_pkt(struct hci_uart *hu)
         bcsp_pkt_cull(bcsp);
         if ((bcsp->rx_skb->data[1] & 0x0f) == 6 &&
                         bcsp->rx_skb->data[0] & 0x80) {
-                bcsp->rx_skb->pkt_type = HCI_ACLDATA_PKT;
+                bt_cb(bcsp->rx_skb)->pkt_type = HCI_ACLDATA_PKT;
                 pass_up = 1;
         } else if ((bcsp->rx_skb->data[1] & 0x0f) == 5 &&
                         bcsp->rx_skb->data[0] & 0x80) {
-                bcsp->rx_skb->pkt_type = HCI_EVENT_PKT;
+                bt_cb(bcsp->rx_skb)->pkt_type = HCI_EVENT_PKT;
                 pass_up = 1;
         } else if ((bcsp->rx_skb->data[1] & 0x0f) == 7) {
-                bcsp->rx_skb->pkt_type = HCI_SCODATA_PKT;
+                bt_cb(bcsp->rx_skb)->pkt_type = HCI_SCODATA_PKT;
                 pass_up = 1;
         } else if ((bcsp->rx_skb->data[1] & 0x0f) == 1 &&
                         !(bcsp->rx_skb->data[0] & 0x80)) {
@@ -512,7 +512,7 @@ static inline void bcsp_complete_rx_pkt(struct hci_uart *hu)
                                 hdr.evt = 0xff;
                                 hdr.plen = bcsp->rx_skb->len;
                                 memcpy(skb_push(bcsp->rx_skb, HCI_EVENT_HDR_SIZE), &hdr, HCI_EVENT_HDR_SIZE);
-                                bcsp->rx_skb->pkt_type = HCI_EVENT_PKT;
+                                bt_cb(bcsp->rx_skb)->pkt_type = HCI_EVENT_PKT;
 
                                 hci_recv_frame(bcsp->rx_skb);
                         } else {