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authorMarcel Holtmann <marcel@holtmann.org>2015-03-14 19:27:54 -0700
committerJohan Hedberg <johan.hedberg@intel.com>2015-03-15 09:46:41 +0200
commit17711c62915dd62ab83a5a83a64c0d6105d13b6c (patch)
tree95400ac5f1fa6e83c9713a896f2bf63ce6ce3910 /net
parent6befc6445ffc6868ee6e6d0e012fc149e88d96db (diff)
downloadop-kernel-dev-17711c62915dd62ab83a5a83a64c0d6105d13b6c.zip
op-kernel-dev-17711c62915dd62ab83a5a83a64c0d6105d13b6c.tar.gz
Bluetooth: Provide hci_send_to_flagged_channel helper function
The hci_send_to_flagged_channel helper function can be used to send packets to all channels that have a certain HCI socket flag set. This is especially useful for managment events that are limited to sockets that have first enabled certain functionality. This allows for filtering of events without confusing existing users. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/bluetooth/hci_sock.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index bf5365c..174a353 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -231,6 +231,39 @@ void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
read_unlock(&hci_sk_list.lock);
}
+/* Send frame to sockets with specific channel flag set */
+void hci_send_to_flagged_channel(unsigned short channel, struct sk_buff *skb,
+ int flag)
+{
+ struct sock *sk;
+
+ BT_DBG("channel %u len %d", channel, skb->len);
+
+ read_lock(&hci_sk_list.lock);
+
+ sk_for_each(sk, &hci_sk_list.head) {
+ struct sk_buff *nskb;
+
+ if (!test_bit(flag, &hci_pi(sk)->flags))
+ continue;
+
+ if (sk->sk_state != BT_BOUND)
+ continue;
+
+ if (hci_pi(sk)->channel != channel)
+ continue;
+
+ nskb = skb_clone(skb, GFP_ATOMIC);
+ if (!nskb)
+ continue;
+
+ if (sock_queue_rcv_skb(sk, nskb))
+ kfree_skb(nskb);
+ }
+
+ read_unlock(&hci_sk_list.lock);
+}
+
/* Send frame to monitor socket */
void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb)
{
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