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Bluetooth: Resume BT_CONNECTED state after LE security elevation 

The LE ATT socket uses a special trick where it temporarily sets
BT_CONFIG state for the duration of a security level elevation. In order
to not require special hacks for going back to BT_CONNECTED state in the
l2cap_core.c code the most reasonable place to resume the state is the
resume callback. This patch adds a new flag to track the pending
security level change and ensures that the state is set back to
BT_CONNECTED in the resume callback in case the flag is set.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2014-08-07 22:56:44 +03:00 committed by Marcel Holtmann
parent 5ff6f34d42
commit d52deb1748
2 changed files with 7 additions and 0 deletions
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1
include/net/bluetooth/l2cap.h
View File

@ -708,6 +708,7 @@ enum {
FLAG_EFS_ENABLE, FLAG_EFS_ENABLE,
FLAG_DEFER_SETUP, FLAG_DEFER_SETUP,
FLAG_LE_CONN_REQ_SENT, FLAG_LE_CONN_REQ_SENT,
FLAG_PENDING_SECURITY,
}; };
enum { enum {

6
net/bluetooth/l2cap_sock.c
View File

@ -790,6 +790,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
if (chan->scid == L2CAP_CID_ATT) { if (chan->scid == L2CAP_CID_ATT) {
if (smp_conn_security(conn->hcon, sec.level)) if (smp_conn_security(conn->hcon, sec.level))
break; break;
set_bit(FLAG_PENDING_SECURITY, &chan->flags);
sk->sk_state = BT_CONFIG; sk->sk_state = BT_CONFIG;
chan->state = BT_CONFIG; chan->state = BT_CONFIG;
@ -1359,6 +1360,11 @@ static void l2cap_sock_resume_cb(struct l2cap_chan *chan)
{ {
struct sock *sk = chan->data; struct sock *sk = chan->data;
if (test_and_clear_bit(FLAG_PENDING_SECURITY, &chan->flags)) {
sk->sk_state = BT_CONNECTED;
chan->state = BT_CONNECTED;
}
clear_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); clear_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags);
sk->sk_state_change(sk); sk->sk_state_change(sk);
} }