diff options
Diffstat (limited to 'net/bluetooth/hci_sock.c')
| -rw-r--r-- | net/bluetooth/hci_sock.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index 4dda4574db3..cf940bd7a2b 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -89,6 +89,7 @@ void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) { struct sock *sk; struct hlist_node *node; + struct sk_buff *skb_copy = NULL; BT_DBG("hdev %p len %d", hdev, skb->len); @@ -131,18 +132,27 @@ void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) continue; } - nskb = skb_clone(skb, GFP_ATOMIC); + if (!skb_copy) { + /* Create a private copy with headroom */ + skb_copy = __pskb_copy(skb, 1, GFP_ATOMIC); + if (!skb_copy) + continue; + + /* Put type byte before the data */ + memcpy(skb_push(skb_copy, 1), &bt_cb(skb)->pkt_type, 1); + } + + nskb = skb_clone(skb_copy, GFP_ATOMIC); if (!nskb) continue; - /* Put type byte before the data */ - memcpy(skb_push(nskb, 1), &bt_cb(nskb)->pkt_type, 1); - if (sock_queue_rcv_skb(sk, nskb)) kfree_skb(nskb); } read_unlock(&hci_sk_list.lock); + + kfree_skb(skb_copy); } /* Send frame to control socket */ |