From abf76bad8fb503fb21fb0eba854fa048c75ff123 Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Fri, 31 Jan 2014 16:24:28 -0800 Subject: [PATCH] Bluetooth: Track the AES-CCM encryption status of LE and BR/EDR links When encryption for LE links has been enabled, it will always be use AES-CCM encryption. In case of BR/EDR Secure Connections, the link will also use AES-CCM encryption. In both cases track the AES-CCM status in the connection flags. Signed-off-by: Marcel Holtmann Signed-off-by: Johan Hedberg --- include/net/bluetooth/hci_core.h | 1 + net/bluetooth/hci_event.c | 8 +++++++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 2e1d184..6854384 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -448,6 +448,7 @@ enum { HCI_CONN_MGMT_CONNECTED, HCI_CONN_SSP_ENABLED, HCI_CONN_SC_ENABLED, + HCI_CONN_AES_CCM, HCI_CONN_POWER_SAVE, HCI_CONN_REMOTE_OOB, HCI_CONN_6LOWPAN, diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 62aea2e..36c9a48 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -1997,8 +1997,14 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb) conn->link_mode |= HCI_LM_AUTH; conn->link_mode |= HCI_LM_ENCRYPT; conn->sec_level = conn->pending_sec_level; - } else + + if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || + conn->type == LE_LINK) + set_bit(HCI_CONN_AES_CCM, &conn->flags); + } else { conn->link_mode &= ~HCI_LM_ENCRYPT; + clear_bit(HCI_CONN_AES_CCM, &conn->flags); + } } clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); -- 2.7.4