diff options
| author | Marcel Holtmann <marcel@holtmann.org> | 2015-03-14 19:27:54 -0700 |
|---|---|---|
| committer | Johan Hedberg <johan.hedberg@intel.com> | 2015-03-15 09:46:41 +0200 |
| commit | 17711c62915dd62ab83a5a83a64c0d6105d13b6c (patch) | |
| tree | 95400ac5f1fa6e83c9713a896f2bf63ce6ce3910 /net/bluetooth/hci_sock.c | |
| parent | 6befc6445ffc6868ee6e6d0e012fc149e88d96db (diff) | |
| download | lwn-17711c62915dd62ab83a5a83a64c0d6105d13b6c.tar.gz lwn-17711c62915dd62ab83a5a83a64c0d6105d13b6c.zip | |
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/bluetooth/hci_sock.c')
| -rw-r--r-- | net/bluetooth/hci_sock.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index bf5365c49c9c..174a353a7dcf 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) { |