[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, 12 insertions, 12 deletions

diff --git a/drivers/bluetooth/bluecard_cs.c b/drivers/bluetooth/bluecard_cs.c
index bd2ec7e284cc..26fe9c0e1d20 100644
--- a/drivers/bluetooth/bluecard_cs.c
+++ b/drivers/bluetooth/bluecard_cs.c
@@ -270,7 +270,7 @@ static void bluecard_write_wakeup(bluecard_info_t *info)
                 if (!(skb = skb_dequeue(&(info->txq))))
                         break;
 
-                if (skb->pkt_type & 0x80) {
+                if (bt_cb(skb)->pkt_type & 0x80) {
                         /* Disable RTS */
                         info->ctrl_reg |= REG_CONTROL_RTS;
                         outb(info->ctrl_reg, iobase + REG_CONTROL);
@@ -288,13 +288,13 @@ static void bluecard_write_wakeup(bluecard_info_t *info)
                 /* Mark the buffer as dirty */
                 clear_bit(ready_bit, &(info->tx_state));
 
-                if (skb->pkt_type & 0x80) {
+                if (bt_cb(skb)->pkt_type & 0x80) {
                         DECLARE_WAIT_QUEUE_HEAD(wq);
                         DEFINE_WAIT(wait);
 
                         unsigned char baud_reg;
 
-                        switch (skb->pkt_type) {
+                        switch (bt_cb(skb)->pkt_type) {
                         case PKT_BAUD_RATE_460800:
                                 baud_reg = REG_CONTROL_BAUD_RATE_460800;
                                 break;
@@ -410,9 +410,9 @@ static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 
                         info->rx_skb->dev = (void *) info->hdev;
-                        info->rx_skb->pkt_type = buf[i];
+                        bt_cb(info->rx_skb)->pkt_type = buf[i];
 
-                        switch (info->rx_skb->pkt_type) {
+                        switch (bt_cb(info->rx_skb)->pkt_type) {
 
                         case 0x00:
                                 /* init packet */
@@ -444,7 +444,7 @@ static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
 
                         default:
                                 /* unknown packet */
-                                BT_ERR("Unknown HCI packet with type 0x%02x received", info->rx_skb->pkt_type);
+                                BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
                                 info->hdev->stat.err_rx++;
 
                                 kfree_skb(info->rx_skb);
@@ -586,21 +586,21 @@ static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
         switch (baud) {
         case 460800:
                 cmd[4] = 0x00;
-                skb->pkt_type = PKT_BAUD_RATE_460800;
+                bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
                 break;
         case 230400:
                 cmd[4] = 0x01;
-                skb->pkt_type = PKT_BAUD_RATE_230400;
+                bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
                 break;
         case 115200:
                 cmd[4] = 0x02;
-                skb->pkt_type = PKT_BAUD_RATE_115200;
+                bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
                 break;
         case 57600:
                 /* Fall through... */
         default:
                 cmd[4] = 0x03;
-                skb->pkt_type = PKT_BAUD_RATE_57600;
+                bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
                 break;
         }
 
@@ -680,7 +680,7 @@ static int bluecard_hci_send_frame(struct sk_buff *skb)
 
         info = (bluecard_info_t *)(hdev->driver_data);
 
-        switch (skb->pkt_type) {
+        switch (bt_cb(skb)->pkt_type) {
         case HCI_COMMAND_PKT:
                 hdev->stat.cmd_tx++;
                 break;
@@ -693,7 +693,7 @@ static int bluecard_hci_send_frame(struct sk_buff *skb)
         };
 
         /* Prepend skb with frame type */
-        memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);
+        memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
         skb_queue_tail(&(info->txq), skb);
 
         bluecard_write_wakeup(info);