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Bluetooth: ISO: Don't initiate CIS connections if there are no buffers

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If the controller has no buffers left return -ENOBUFF to indicate that
iso_cnt might be out of sync.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Luiz Augusto von Dentz
2025-06-27 11:18:29 -04:00
parent 8183c8ea87
commit d79c7d01f1
1 changed files with 7 additions and 0 deletions
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7
net/bluetooth/iso.c
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@@ -458,6 +458,13 @@ static int iso_connect_cis(struct sock *sk)
goto unlock; goto unlock;
} }
/* Check if there are available buffers for output/TX. */
if (iso_pi(sk)->qos.ucast.out.sdu && !hci_iso_count(hdev) &&
(hdev->iso_pkts && !hdev->iso_cnt)) {
err = -ENOBUFS;
goto unlock;
}
/* Just bind if DEFER_SETUP has been set */ /* Just bind if DEFER_SETUP has been set */
if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
hcon = hci_bind_cis(hdev, &iso_pi(sk)->dst, hcon = hci_bind_cis(hdev, &iso_pi(sk)->dst,