David Herrmann 660f0fc07d Bluetooth: hidp: fix device disconnect on idle timeout ... The HIDP specs define an idle-timeout which automatically disconnects a device. This has always been implemented in the HIDP layer and forced a synchronous shutdown of the hidp-scheduler. This works just fine, but lacks a forced disconnect on the underlying l2cap channels. This has been broken since: commit 5205185d46 Author: David Herrmann <dh.herrmann@gmail.com> Date: Sat Apr 6 20:28:47 2013 +0200 Bluetooth: hidp: remove old session-management The old session-management always forced an l2cap error on the ctrl/intr channels when shutting down. The new session-management skips this, as we don't want to enforce channel policy on the caller. In other words, if user-space removes an HIDP device, the underlying channels (which are *owned* and *referenced* by user-space) are still left active. User-space needs to call shutdown(2) or close(2) to release them. Unfortunately, this does not work with idle-timeouts. There is no way to signal user-space that the HIDP layer has been stopped. The API simply does not support any event-passing except for poll(2). Hence, we restore old behavior and force EUNATCH on the sockets if the HIDP layer is disconnected due to idle-timeouts (behavior of explicit disconnects remains unmodified). User-space can still call getsockopt(..., SO_ERROR, ...) ..to retrieve the EUNATCH error and clear sk_err. Hence, the channels can still be re-used (which nobody does so far, though). Therefore, the API still supports the new behavior, but with this patch it's also compatible to the old implicit channel shutdown. Cc: <stable@vger.kernel.org> # 3.10+ Reported-by: Mark Haun <haunma@keteu.org> Reported-by: Luiz Augusto von Dentz <luiz.dentz@gmail.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>		2015-10-21 00:49:23 +02:00
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6lowpan
9p
802
8021q
appletalk
atm
ax25
batman-adv
bluetooth	Bluetooth: hidp: fix device disconnect on idle timeout	2015-10-21 00:49:23 +02:00
bridge	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2015-10-17 14:28:03 +02:00
caif
can
ceph	rbd: use writefull op for object size writes	2015-10-16 16:49:01 +02:00
core	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
dcb
dccp	tcp/dccp: add inet_csk_reqsk_queue_drop_and_put() helper	2015-10-16 00:52:18 -07:00
decnet	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2015-10-17 14:28:03 +02:00
dns_resolver
dsa	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
ethernet
hsr
ieee802154
ipv4	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
ipv6	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
ipx
irda
iucv
key
l2tp
l3mdev
lapb
llc
mac80211	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
mac802154
mpls
netfilter	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2015-10-17 14:28:03 +02:00
netlabel
netlink	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
netrom
nfc
openvswitch	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
packet
phonet
rds	RDS: fix rds-ping deadlock over TCP transport	2015-10-18 22:45:55 -07:00
rfkill
rose
rxrpc
sched	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
sctp
sunrpc
switchdev	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
tipc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
unix
vmw_vsock
wimax
wireless
x25
xfrm
compat.c
Kconfig
Makefile
socket.c
sysctl_net.c