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Bluetooth: L2CAP: Fix not queueing in case there are no credits

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This can happens if for example the remote peer have the initial credits
set to 0 which would cause bt_l2cap_chan_send to fail instead of just
queue the packets until more credits are given.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Luiz Augusto von Dentz 2020-02-06 12:11:52 -08:00 • committed by Johan Hedberg
commit 6ea0ea38a7
1 changed files with 5 additions and 2 deletions
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7
subsys/bluetooth/host/l2cap.c
View file

@ -2038,8 +2038,11 @@ int bt_l2cap_chan_send(struct bt_l2cap_chan *chan, struct net_buf *buf)
return bt_l2cap_br_chan_send(chan, buf);
}
/* Queue if there pending segments left from previous packets */
if (ch->tx_buf || !k_fifo_is_empty(&ch->tx_queue)) {
/* Queue if there are pending segments left from previous packet or
* there are no credits available.
*/
if (ch->tx_buf || !k_fifo_is_empty(&ch->tx_queue) ||
!atomic_get(&ch->tx.credits)) {
data_sent(buf)->len = 0;
net_buf_put(&ch->tx_queue, buf);
k_work_submit(&ch->tx_work);