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Bluetooth: __l2cap_wait_ack() add defensive timeout

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Add a timeout to prevent the do while loop running in an
infinite loop. This ensures that the channel will be
instructed to close within 10 seconds so prevents
l2cap_sock_shutdown() getting stuck forever.

Returns -ENOLINK when the timeout is reached. The channel
will be subequently closed and not all data will be ACK'ed.

Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Dean Jenkins
2015-06-23 17:59:39 +01:00
committed by Marcel Holtmann
parent cb02a25583
commit e432c72c46
2 changed files with 11 additions and 1 deletions
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1
include/net/bluetooth/l2cap.h
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@@ -56,6 +56,7 @@
#define L2CAP_MOVE_TIMEOUT msecs_to_jiffies(4000)
#define L2CAP_MOVE_ERTX_TIMEOUT msecs_to_jiffies(60000)
#define L2CAP_WAIT_ACK_POLL_PERIOD msecs_to_jiffies(200)
#define L2CAP_WAIT_ACK_TIMEOUT msecs_to_jiffies(10000)
#define L2CAP_A2MP_DEFAULT_MTU 670