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Bluetooth: Send control open and close messages for HCI user channels 

When opening and closing HCI user channel, send monitoring messages to
be able to trace its behavior.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2016-09-01 19:48:28 +02:00
parent bdca1fd9a6
commit aa1638dde7
1 changed files with 35 additions and 0 deletions
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35
net/bluetooth/hci_sock.c
View File

@ -493,6 +493,11 @@ static struct sk_buff *create_monitor_ctrl_open(struct sock *sk)
ver[0] = BT_SUBSYS_VERSION;
put_unaligned_le16(BT_SUBSYS_REVISION, ver + 1);
break;
case HCI_CHANNEL_USER:
format = 0x0001;
ver[0] = BT_SUBSYS_VERSION;
put_unaligned_le16(BT_SUBSYS_REVISION, ver + 1);
break;
case HCI_CHANNEL_CONTROL:
format = 0x0002;
mgmt_fill_version_info(ver);
@ -539,6 +544,7 @@ static struct sk_buff *create_monitor_ctrl_close(struct sock *sk)
switch (hci_pi(sk)->channel) {
case HCI_CHANNEL_RAW:
case HCI_CHANNEL_USER:
case HCI_CHANNEL_CONTROL:
break;
default:
@ -827,6 +833,7 @@ static int hci_sock_release(struct socket *sock)
atomic_dec(&monitor_promisc);
break;
case HCI_CHANNEL_RAW:
case HCI_CHANNEL_USER:
case HCI_CHANNEL_CONTROL:
/* Send event to monitor */
skb = create_monitor_ctrl_close(sk);
@ -1179,8 +1186,36 @@ static int hci_sock_bind(struct socket *sock, struct sockaddr *addr,
}
hci_pi(sk)->channel = haddr.hci_channel;
if (!hci_sock_gen_cookie(sk)) {
/* In the case when a cookie has already been assigned,
* this socket will transition from a raw socket into
* an user channel socket. For a clean transition, send
* the close notification first.
*/
skb = create_monitor_ctrl_close(sk);
if (skb) {
hci_send_to_channel(HCI_CHANNEL_MONITOR, skb,
HCI_SOCK_TRUSTED, NULL);
kfree_skb(skb);
}
}
/* The user channel is restricted to CAP_NET_ADMIN
* capabilities and with that implicitly trusted.
*/
hci_sock_set_flag(sk, HCI_SOCK_TRUSTED);
hci_pi(sk)->hdev = hdev;
/* Send event to monitor */
skb = create_monitor_ctrl_open(sk);
if (skb) {
hci_send_to_channel(HCI_CHANNEL_MONITOR, skb,
HCI_SOCK_TRUSTED, NULL);
kfree_skb(skb);
}
atomic_inc(&hdev->promisc);
break;