Commit Graph

51 Commits

Author SHA1 Message Date
Lennert Buytenhek c22ff7b4e7 mac802154: Fix memory corruption with global deferred transmit state.
When transmitting a packet via a mac802154 driver that can sleep in
its transmit function, mac802154 defers the call to the driver's
transmit function to a per-device workqueue.

However, mac802154 uses a single global work_struct for this, which
means that if you have more than one registered mac802154 interface
in the system, and you transmit on more than one of them at the same
time, you'll very easily cause memory corruption.

This patch moves the deferred transmit processing state from global
variables to struct ieee802154_local, and this seems to fix the memory
corruption issue.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-07-30 14:08:55 +02:00
Varka Bhadram d10270ce94 mac802154: fix ieee802154_rx handling
Instead of passing ieee802154_hw pointer to ieee802154_rx,
we can directly pass the ieee802154_local pointer.

Signed-off-by: Varka Bhadram <varkabhadram@gmail.com>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-07-23 17:10:50 +02:00
Varka Bhadram 729a8989b3 mac802154: do not export ieee802154_rx()
Right now there are no other users for ieee802154_rx()
in kernel. So lets remove EXPORT_SYMBOL() for this.

Also it moves the function prototype from global header
file to local header file.

Signed-off-by: Varka Bhadram <varkabhadram@gmail.com>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-07-23 17:10:50 +02:00
Alexander Aring 3cf24cf8c3 mac802154: cfg: add suspend and resume callbacks
This patch introduces suspend and resume callbacks to mac802154. When
doing suspend we calling the stop driver callback which should stop the
receiving of frames. A transceiver should go into low-power mode then.
Calling resume will call the start driver callback, which starts receiving
again and allow to transmit frames.

This was tested only with the fakelb driver and a qemu vm by doing the
following commands:

echo "devices" > /sys/power/pm_test
echo "freeze" > /sys/power/state

while doing some high traffic between two fakelb phys.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-07-23 17:10:49 +02:00
Alexander Aring c4227c8a62 mac802154: util: add stop_device utility function
This patch adds ieee802154_stop_device for preparing a utility function
to stop the ieee802154 device.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-07-23 17:10:49 +02:00
Varka Bhadram 927e031c7c mac802154: remove unused macro
This patch removes the unused macro which was removed
with the rework of linux-wpan kernel.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-07-23 17:10:48 +02:00
Alexander Aring d77b4852b4 mac802154: add llsec address update workaround
This patch adds a workaround for using the new nl802154 netlink
interface with the old ieee802154 netlink interface togehter. The
nl802154 currently supports no access for llsec layer, currently there
are users outside which are using both interfaces at the same time. This
patch adds a necessary call when addresses are updated.

Reported-by: Simon Vincent <simon.vincent@xsilon.com>
Suggested-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-07-23 17:10:48 +02:00
Alexander Aring ed65963ba0 mac802154: remove unneeded vif struct
This patch removes the virtual interface structure from sub if data
struct, because it isn't used anywhere. This structure could be useful
for give per interface information at softmac driver layer. Nevertheless
there exist no use case currently and it contains the interface type
information currently. This information is also stored inside wpan dev
which is now used to check on the wpan dev interface type.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Acked-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-06-07 09:13:32 +02:00
Alexander Aring c947f7e1e3 mac802154: remove mib lock
This patch removes the mib lock. The new locking mechanism is to protect
the mib values with the rtnl lock. Note that this isn't always necessary
if we have an interface up the most mib values are readonly (e.g.
address settings). With this behaviour we can remove locking in
hotpath like frame parsing completely. It depends on context if we need
to hold the rtnl lock or not, this makes the callbacks of
ieee802154_mlme_ops unnecessary because these callbacks hols always the
locks.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-05-23 17:57:08 +02:00
Alexander Aring 344f8c119d mac802154: use atomic ops for sequence incrementation
This patch will use atomic operations for sequence number incrementation
while MAC header generation. Upper layers like af_802154 or 6LoWPAN
could call this function in a parallel context while generating 802.15.4
MAC header before queuing into wpan interfaces transmit queue.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-05-23 17:57:08 +02:00
Varka Bhadram 5b4a103904 cfg802154: pass name_assign_type to rdev_add_virtual_intf()
This code is based on commit 6bab2e19c5
("cfg80211: pass name_assign_type to rdev_add_virtual_intf()")

This will expose in sysfs whether the ifname of a IEEE-802.15.4
device is set by userspace or generated by the kernel.
We are using two types of name_assign_types
 o NET_NAME_ENUM: Default interface name provided by kernel
 o NET_NAME_USER: Interface name provided by user.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:48:10 +02:00
Alexander Aring b821ecd4c8 ieee802154: add del interface command
This patch adds support for deleting a wpan interface via nl802154.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-17 09:49:17 +01:00
Alexander Aring 0e57547eb7 ieee802154: setting extended address while iface add
This patch adds support for setting an extended address while
registration a new interface. If ieee802154_is_valid_extended_addr
getting as parameter and invalid extended address then the perm address
is fallback. This is useful to make some default handling while for
example default registration of a wpan interface while phy registration.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-17 09:49:16 +01:00
Alexander Aring 133d3f3172 mac802154: remove wpan_dev parameter in if_add
This parameter was grabbed from wireless implementation with the
identically wireless dev struct. We don't need this right now and so we
remove it. Maybe we will add it later again if we found any real reason
to have such parameter.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-17 09:49:16 +01:00
Alexander Aring 944742a36d mac802154: use new nl802154 iftype types
This patch replace the depracted IEEE802154_DEV to the new introduced
NL802154_IFTYPE_NODE types. There is a backwards compatibility to have
the identical types for both enum definitions. Also remove some inlcude
issue with "linux/nl802154.h", because the export nl_policy inside this
header it was always necessary to have an include of "net/rtnetlink.h"
before. The reason for this is more complicated. Nevertheless we removed
this now, because "linux/nl802154.h" is the depracted netlink interface.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-17 09:49:15 +01:00
Alexander Aring 197304b7a5 mac802154: remove unused prototypes
This patch removes some prototypes which are not used anymore.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-17 09:49:14 +01:00
Alexander Aring 61f2dcba9a mac802154: add interframe spacing time handling
This patch adds a new interframe spacing time handling into mac802154
layer. Interframe spacing time is a time period between each transmit.
This patch adds a high resolution timer into mac802154 and starts on
xmit complete with corresponding interframe spacing expire time if
ifs_handling is true. We make it variable because it depends if
interframe spacing time is handled by transceiver or mac802154. At the
timer complete function we wake the netdev queue again. This avoids
new frame transmit in range of interframe spacing time.

For synced driver we add no handling of interframe spacing time. This
is currently a lack of support in all synced xmit drivers. I suppose
it's working because the latency of workqueue which is needed to call
spi_sync.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-13 04:51:58 +01:00
Alexander Aring be4fd8e5d9 mac802154: add ifname change notifier
This patch adds a netdev notifier for interface renaming. We have a name
attribute inside of subif data struct. This is needed to have always the
actual netdev name in sdata name attribute.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-12 05:10:37 +01:00
Alexander Aring 6322d50d87 mac802154: add wpan_phy priv id
This patch adds an unique id for an wpan_phy. This behaviour is mostly
grabbed from wireless stack. This is needed for upcomming patches which
identify the wpan netdev while NETDEV_CHANGENAME in netdev notify function.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-12 05:10:36 +01:00
Alexander Aring 592dfbfc72 mac820154: move interface unregistration into iface
This patch move the iface unregistration into iface.c file to have
a behaviour which is similar like mac80211. Also iface handling should
be inside iface.c file only.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-12 05:10:35 +01:00
Alexander Aring 5fb3f026ae mac802154: remove mac_params in sdata
This patch removes the mac_params from subif data struct. Instead we
manipulate the wpan attributes directly.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-09 19:50:28 +01:00
Alexander Aring 863e88f255 mac802154: move mac pib attributes into wpan_dev
This patch moves all mac pib attributes into the wpan_dev struct.
Furthermore we can easier access these attributes over the netdev
802154_ptr pointer. Currently this is only possible over a complicated
callback structure in mac802154 because subif data structure is
accessable inside mac802154 only.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-09 19:50:27 +01:00
Alexander Aring 0916c02205 mac802154: fix typo promisuous to promiscuous
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-05 21:53:06 +01:00
Alexander Aring 7c118c1a86 mac802154: add ieee802154_vif struct
This patch adds an ieee802154_vif similar like the ieee80211_vif which
holds the interface type and maybe further more attributes like the
ieee80211_vif structure.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Cc: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-05 21:53:04 +01:00
Alexander Aring d5ae67bacd ieee802154: rework interface registration
This patch meld mac802154_netdev_register into ieee802154_if_add
function. Also we have now only one alloc_netdev call with one interface
setup routine "ieee802154_if_setup" instead two different one for each
interface type. This patch checks via runtime the interface type and do
different handling now. Additional we add the wpan_dev struct in
ieee802154_sub_if_data and set the new ieee802154_ptr while netdev
registration. This behaviour is very similar the mac80211 netdev
registration functionality.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-05 21:53:04 +01:00
Alexander Aring 986a8abfc5 mac802154: move interface add handling in iface
This patch moves and renames the mac802154_add_iface and
mac802154_netdev_register functions into iface.c. The function
mac802154_add_iface is renamed to ieee802154_if_add which is a similar naming
convention like mac80211.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-05 21:53:03 +01:00
Alexander Aring b210b18747 mac802154: move interface del handling in iface
This patch moves and rename the mac802154_del_iface function into
iface.c and rename the function to ieee802154_if_remove which is a similar
naming convention like mac80211.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-05 21:53:03 +01:00
Alexander Aring 776e59de46 mac802154: set extended address filter on ifup
This patch moves the setting of hardware extended address filtering
inside of interface up instead doing it directly inside of netlink interface.
Also we don't need to set the sdata extended attribute in netlink. This
is already done by ndo_set_mac_address of net_device_ops.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-02 04:51:07 +01:00
Alexander Aring 4a9a816a4f cfg802154: convert deprecated iface add and del
This patch removes the wpan_phy callbacks for add and del an interface
on a phy. Instead we introduce deprecated cfg802154 callbacks for this.
Furthermore we introduce a new netlink interface nl802154 which use
different callbacks. The deprecated function is to have a backwards
compatibility with the current netlink interface.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-02 04:51:06 +01:00
Alexander Aring 38130c31ef mac802154: add basic support for monitor
This patch adds basic support for monitor mode. Also change the open
call that we set the transceiver mac setting on an interface up. Futher
patches will add a better handling while interface up an interface.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 23:07:46 +01:00
Alexander Aring c7420c367d mac802154: move mac_params functions into mac_cmd
These functions can be static in mac_cmd file.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-28 23:19:08 +01:00
Alexander Aring 12439a5356 mac802154: remove channel attributes from sdata
These channel attributes was part of "channel context switch while xmit"
which was removed by commit dc67c6b30f
("mac802154: tx: remove xmit channel context switch"). This patch
removes these unnecessary variables and use the current_page and
current_channel by wpan_phy struct now.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-28 23:19:08 +01:00
Alexander Aring e363eca386 mac802154: move local started handling
This patch removes the current handling of started boolean. This is
actually dead code, because mac802154_netdev_register can't never be
called before ieee802154_register_hw. This means that local->started is
always be true when mac802154_netdev_register is called. Instead we
using this now like mac80211 to indicate that an instance of sdata is
running.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-28 23:19:08 +01:00
Alexander Aring 5d65cae4bf mac802154: rename running to started
This variable should be handled like ieee80211_local struct of mac80211.
We rename this variable to started now to have the same name convention.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-28 23:19:08 +01:00
Alexander Aring 0ea3da64fa mac802154: rework sdata state change to running
This patch reworks the handling for setting the state like mac80211. We
use bit's instead a bool variable. The mutex is not needed because it use
test and set bits which are atomic operations.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-28 23:19:07 +01:00
Alexander Aring 1630186100 mac802154: declare struct ieee802154_ops as const
The ieee802154_ops structure should be never changed during runtime.
This patch declare this structure as const to avoid a runtime change.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Cc: Alan Ott <alan@signal11.us>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-28 23:19:07 +01:00
Alexander Aring 19ec690a43 mac802154: main: move open and close into iface
These functions can be static inside the iface file, because it's not
used anywhere else. This patch moves these functions into iface file.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-28 23:19:06 +01:00
Alexander Aring 4ca18be54f mac802154: tx: remove monitor receive while xmit
This removes the call of monitor receive funktion when any interface
type call xmit. There exist no such use case that a monitor interface
should receive the actual sending frame. One use case could be that a
wpan interface and monitor interface could be running at the same time
on one phy. Then the monitor interface receives the wpan frames also.
Furthermore we adding support for promiscous mode setting. With
promiscous mode setting we can't run a wpan and monitor interface at the
same time.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-27 18:07:42 +01:00
Alexander Aring 2a9820c9e2 mac802154: rx: move receive handling into rx.c
This patch removes all relevant receiving functions inclusive frame
parsing into rx file. Like mac80211 we should implement the complete
receive handling and parsing in this file.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-27 18:07:42 +01:00
Alexander Aring c5c47e67bc mac802154: rx: use tasklet instead workqueue
Tasklets have much less overhead than workqueues. This patch also
removes the heap allocation for the worker on receiving path.
Like mac80211 we should prefer use a tasklet here instead a workqueue to
getting fast out of interrupt context when ieee802154_rx_irqsafe is
called by driver. Like wireless inside the tasklet context we should
call netif_receive_skb instead netif_rx_ni anymore.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-27 18:07:40 +01:00
Alexander Aring e5e584fcc2 mac802154: tx: change naming convention
This patch changes the naming convention of the tx functions like
mac80211. Just with an 802154 instead 80211 inside the name.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-26 17:24:05 +01:00
Alexander Aring 50c6fb9965 mac802154: tx: move xmit callback to tx file
This patch moves the netdev xmit callback functions into the tx.c file.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-26 17:23:50 +01:00
Alexander Aring f773054254 mac802154: rename dev_workqueue to workqueue
Small rename to use the name workqueue than dev_workqueue. To bring the
same naming convention like wireless into 802.15.4.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-25 21:55:38 +02:00
Alexander Aring 59d19cd70c mac802154: introduce IEEE802154_DEV_TO_SUB_IF
This function adds a wrapper to call netdev_priv to getting the sdata
attribute. This is similar like the IEEE80211_DEV_TO_SUB_IF function
inside wireless stack implementation.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-25 21:55:38 +02:00
Alexander Aring 60741361c3 mac802154: introduce hw_to_local function
This patch replace the mac802154_to_priv macro with a static inline
function named hw_to_local. This brings a similar naming convention like
mac80211 stack.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-25 21:55:38 +02:00
Alexander Aring d98be45b36 mac802154: rename sdata slaves and slaves_mtx
This patch renamens the slaves attribute in sdata to interfaces and
slaves_mtx to iflist_mtx. This is similar like the mac80211 stack naming
convention.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-25 21:55:38 +02:00
Alexander Aring 04e850fe06 mac802154: rename hw subif_data variable to local
This patch renames the hw attribute in struct ieee802154_sub_if_data to
local. This avoid confusing with the struct ieee802154_hw hw; inside of
local struct.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-25 21:55:38 +02:00
Alexander Aring 036562f9c4 mac802154: rename mac802154_sub_if_data
Like wireless this structure should named ieee802154_sub_if_data and not
mac802154_sub_if_data. This patch renames the struct and variables to
sdata instead priv sometimes.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-25 21:55:37 +02:00
Alexander Aring a5e1ec538f mac802154: rename mac802154_priv to ieee802154_local
This patch rename the mac802154_priv to ieee802154_local. The
mac802154_priv structure is like ieee80211_local and so we name it
ieee802154_local.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-25 21:55:37 +02:00
Alexander Aring 5a50439775 ieee802154: rename ieee802154_dev to ieee802154_hw
The identical struct of the wireless stack implementation is named
ieee80211_hw. This is useful to name the variable hw instead of get
confusing with netdev dev variable.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Cc: Alan Ott <alan@signal11.us>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-25 21:55:37 +02:00