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Bluetooth: Make hci_send_to_sock usable for management control sockets 

In order to send data to management control sockets the function should:

  - skip checks intended for raw HCI data and stack internal events
  - make sure RAW HCI data or stack internal events don't go to
    management control sockets

In order to accomplish this the patch adds a new member to the bluetooth
skb private data to flag skb's that are destined for management control
sockets.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Johan Hedberg 2010-12-08 00:21:07 +02:00 committed by Gustavo F. Padovan
parent 0381101fd6
commit a40c406cbd
2 changed files with 10 additions and 1 deletions
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1
include/net/bluetooth/bluetooth.h
View File

@ -144,6 +144,7 @@ struct bt_skb_cb {
__u8 tx_seq;
__u8 retries;
__u8 sar;
unsigned short channel;
};
#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))

10
net/bluetooth/hci_sock.c
View File

@ -104,6 +104,12 @@ void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb)
if (skb->sk == sk)
continue;
if (bt_cb(skb)->channel != hci_pi(sk)->channel)
continue;
if (bt_cb(skb)->channel == HCI_CHANNEL_CONTROL)
goto clone;
/* Apply filter */
flt = &hci_pi(sk)->filter;
@ -127,12 +133,14 @@ void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb)
continue;
}
clone:
nskb = skb_clone(skb, GFP_ATOMIC);
if (!nskb)
continue;
/* Put type byte before the data */
memcpy(skb_push(nskb, 1), &bt_cb(nskb)->pkt_type, 1);
if (bt_cb(skb)->channel == HCI_CHANNEL_RAW)
memcpy(skb_push(nskb, 1), &bt_cb(nskb)->pkt_type, 1);
if (sock_queue_rcv_skb(sk, nskb))
kfree_skb(nskb);