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Bluetooth: Add extra channel checks for control open/close messages 

The control open and close monitoring events require special channel
checks to ensure messages are only send when the right events happen.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2016-08-30 05:00:38 +02:00
parent 5a6d2cf5f1
commit d0bef1d26f
1 changed files with 19 additions and 5 deletions
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24
net/bluetooth/hci_sock.c
View File

@ -479,7 +479,7 @@ static struct sk_buff *create_monitor_ctrl_open(struct sock *sk)
{
struct hci_mon_hdr *hdr;
struct sk_buff *skb;
u16 format = 0x0002;
u16 format;
u8 ver[3];
u32 flags;
@ -487,11 +487,20 @@ static struct sk_buff *create_monitor_ctrl_open(struct sock *sk)
if (!hci_pi(sk)->cookie)
return NULL;
switch (hci_pi(sk)->channel) {
case HCI_CHANNEL_CONTROL:
format = 0x0002;
mgmt_fill_version_info(ver);
break;
default:
/* No message for unsupported format */
return NULL;
}
skb = bt_skb_alloc(14 + TASK_COMM_LEN , GFP_ATOMIC);
if (!skb)
return NULL;
mgmt_fill_version_info(ver);
flags = hci_sock_test_flag(sk, HCI_SOCK_TRUSTED) ? 0x1 : 0x0;
put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4));
@ -523,6 +532,14 @@ static struct sk_buff *create_monitor_ctrl_close(struct sock *sk)
if (!hci_pi(sk)->cookie)
return NULL;
switch (hci_pi(sk)->channel) {
case HCI_CHANNEL_CONTROL:
break;
default:
/* No message for unsupported format */
return NULL;
}
skb = bt_skb_alloc(4, GFP_ATOMIC);
if (!skb)
return NULL;
@ -652,9 +669,6 @@ static void send_monitor_control_replay(struct sock *mon_sk)
sk_for_each(sk, &hci_sk_list.head) {
struct sk_buff *skb;
if (hci_pi(sk)->channel != HCI_CHANNEL_CONTROL)
continue;
skb = create_monitor_ctrl_open(sk);
if (!skb)
continue;