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authorLuiz Augusto von Dentz <luiz.dentz@openbossa.org>2009-07-15 13:50:58 -0300
committerMarcel Holtmann <marcel@holtmann.org>2009-08-22 15:05:58 -0700
commit9e726b17422bade75fba94e625cd35fd1353e682 (patch)
treeaf8cf616d9cbda12f51682dbb96e696f135be436 /include/net/bluetooth
parentef54fd937fbd5ebaeb023818524565bd526a5f36 (diff)
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Bluetooth: Fix rejected connection not disconnecting ACL link
When using DEFER_SETUP on a RFCOMM socket, a SABM frame triggers authorization which when rejected send a DM response. This is fine according to the RFCOMM spec: the responding implementation may replace the "proper" response on the Multiplexer Control channel with a DM frame, sent on the referenced DLCI to indicate that the DLCI is not open, and that the responder would not grant a request to open it later either. But some stacks doesn't seems to cope with this leaving DLCI 0 open after receiving DM frame. To fix it properly a timer was introduced to rfcomm_session which is used to set a timeout when the last active DLC of a session is unlinked, this will give the remote stack some time to reply with a proper DISC frame on DLCI 0 avoiding both sides sending DISC to each other on stacks that follow the specification and taking care of those who don't by taking down DLCI 0. Signed-off-by: Luiz Augusto von Dentz <luiz.dentz@openbossa.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'include/net/bluetooth')
-rw-r--r--include/net/bluetooth/rfcomm.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/net/bluetooth/rfcomm.h b/include/net/bluetooth/rfcomm.h
index c274993234e3..921d7b3c7f8d 100644
--- a/include/net/bluetooth/rfcomm.h
+++ b/include/net/bluetooth/rfcomm.h
@@ -29,6 +29,7 @@
#define RFCOMM_CONN_TIMEOUT (HZ * 30)
#define RFCOMM_DISC_TIMEOUT (HZ * 20)
#define RFCOMM_AUTH_TIMEOUT (HZ * 25)
+#define RFCOMM_IDLE_TIMEOUT (HZ * 2)
#define RFCOMM_DEFAULT_MTU 127
#define RFCOMM_DEFAULT_CREDITS 7
@@ -154,6 +155,7 @@ struct rfcomm_msc {
struct rfcomm_session {
struct list_head list;
struct socket *sock;
+ struct timer_list timer;
unsigned long state;
unsigned long flags;
atomic_t refcnt;
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