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* mac802154: Delete an unnecessary check before the function call "kfree_skb"Markus Elfring2015-11-191-2/+1Star
| | | | | | | | | | The kfree_skb() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: add comments for llsec issuesAlexander Aring2015-09-301-0/+4
| | | | | | | | | | | | | | | While doing a little test with the llsec implementation I saw these issues. We should move decryption and encruption somewhere else, otherwise while capturing with wireshark the mac header shows secuirty fields but the payload is plaintext. A complete other issue is what doing with HardMAC drivers where the payload is always plaintext. I think we need a special handling then in userspace. We currently doesn't support any HardMAC transceivers, so we should fix the first issue for SoftMAC transceivers. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: fix ieee802154_rx handlingVarka Bhadram2015-07-231-2/+1Star
| | | | | | | | | 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>
* mac802154: do not export ieee802154_rx()Varka Bhadram2015-07-231-1/+0Star
| | | | | | | | | | | | 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>
* mac802154: cfg: add suspend and resume callbacksAlexander Aring2015-07-231-2/+8
| | | | | | | | | | | | | | | | | | | 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>
* mac802154: rx packet handle cleanupVarka Bhadram2015-06-151-2/+4
| | | | | | | | | This patch replaces !netif_running(sdata->dev) with !ieee802154_sdata_running(sdata) and also devide the code two separate if branches. Signed-off-by: Varka Bhadram <varkab@cdac.in> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: remove unneeded vif structAlexander Aring2015-06-071-2/+2
| | | | | | | | | | | | | | 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>
* mac802154: remove mib lockAlexander Aring2015-05-231-5/+0Star
| | | | | | | | | | | | | | | 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>
* mac802154: use goto label on failureVarka Bhadram2014-12-051-2/+1Star
| | | | | | | Signed-off-by: Varka Bhadram <varkab@cdac.in> Reviewed-by: Stefan Schmidt <s.schmidt@samsung.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: use new nl802154 iftype typesAlexander Aring2014-11-171-4/+3Star
| | | | | | | | | | | | | 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>
* mac802154: move mac pib attributes into wpan_devAlexander Aring2014-11-091-3/+4
| | | | | | | | | | | 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>
* mac802154: add ieee802154_vif structAlexander Aring2014-11-051-2/+2
| | | | | | | | | | 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>
* mac802154: rx: add error handling after skb_cloneAlexander Aring2014-10-291-5/+6
| | | | | | | | This patch adds error handling after skb_clone and deliver only if skb_clone was successful. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: monitor receive cleanupAlexander Aring2014-10-291-2/+4
| | | | | | | | | This patch replace the !netif_running(sdata->dev) instead we doing a !ieee802154_sdata_running(sdata). Also move this in two separate if branches to compare with mac80211 code. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: add rx stats incrementationAlexander Aring2014-10-291-0/+3
| | | | | | | | This patch adds rx stats incrementation when the monitor interface recevied a frame. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: use netif_receive_skbAlexander Aring2014-10-291-1/+1
| | | | | | | | | This patch removes netif_rx_ni call. Instead we call netif_receive_skb, we can do that since commit c5c47e67bcd24638a059b1b5e9ec18c95f8634ca ("mac802154: rx: use tasklet instead workqueue"). Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: remove override pkt_type set to PACKET_HOSTAlexander Aring2014-10-291-1/+0Star
| | | | | | | | | This patch removes pkt_type set to PACKET_HOST while monitor receiving. This should be PACKET_OTHERHOST on monitor mode which already set before. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: add software checksum filtering checkAlexander Aring2014-10-291-2/+13
| | | | | | | | | This patch adds a new hardware flag which indicate that the transceiver doesn't support check for bad checksum via hardware. Also add a handling of this while receive. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: simplify crc receive handlingAlexander Aring2014-10-291-22/+12Star
| | | | | | | | | | | | | This patch change the actual crc handling while receive. Currently the IEEE802154_HW_RX_OMIT_CKSUM flag is used to filter a frame with a bad crc. This patch changes the behaviour of IEEE802154_HW_RX_OMIT_CKSUM to add a crc while receiving for the monitor interface. After monitor receiving we remove the crc for frame parsing. This affect the driver layer because all drivers sets IEEE802154_HW_RX_OMIT_CKSUM and deliver without checksum. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: remove unnecessary parameterAlexander Aring2014-10-291-2/+2
| | | | | | | This patch removes a not used parameter in ieee802154_deliver_skb. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: separate omit tx/rx flagsAlexander Aring2014-10-291-1/+1
| | | | | | | | | | | | | This patch splits the IEEE802154_HW_OMIT_CKSUM hardware flag into IEEE802154_HW_TX_OMIT_CKSUM and IEEE802154_HW_RX_OMIT_CKSUM. This is useful to deliver the received crc from the driver layer to the monitor interface. At the moment we can't do that without change the xmit handling. The received checksum should be visible in monitor mode only. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: change naming conventionAlexander Aring2014-10-271-16/+17
| | | | | | | | | | This patch changes the naming convention of mac802154 rx file. It should be more named like mac80211 stack. Furthermore we introduce a new frame parsing implementation which is much similar the mac80211 implementation. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: move rcu lockingAlexander Aring2014-10-271-4/+4
| | | | | | | | Instead of twice lock and unlock mechanism this patch hold these locks only once at one position. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: move skb_reset_mac_headerAlexander Aring2014-10-271-2/+3
| | | | | | | | This patch moves the skb_reset_mac_header call before frame parsing while wpan rx and before monitor deliver functionality. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: add monitor pkt_type informationAlexander Aring2014-10-271-0/+1
| | | | | | | | | This patch adds a PACKET_OTHERHOST setting when a monitor interface receives a skb. All receiving skb's to the monitor interface should be PACKET_OTHERHOST. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: add CHECKSUM_UNNECESSARYAlexander Aring2014-10-271-0/+2
| | | | | | | | This patch adds CHECKSUM_UNNECESSARY to skb->ip_summed before delivery. There exist no transceiver with IP checksum functionality. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: move skb->protocol settingAlexander Aring2014-10-271-1/+4
| | | | | | | | This patch moves the skb->protocol setting to the position when it's needed. It's only needed when frame parsing was successful. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: rename remove mac802154_subif_rxAlexander Aring2014-10-271-9/+3Star
| | | | | | | | | This patch removes the mac802154_subif_rx function and do the necessary calls inside of ieee802154_rx function. The ieee802154_rx is small enough to move the functionality inside this function. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: tx: remove monitor receive while xmitAlexander Aring2014-10-271-1/+2
| | | | | | | | | | | | | | 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>
* mac802154: rx: move receive handling into rx.cAlexander Aring2014-10-271-0/+214
| | | | | | | | | 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>
* mac802154: rx: document ieee802154_rx() context requirementAlexander Aring2014-10-271-0/+2
| | | | | | | | | | This patch is similar like d20ef63d32461332958661df73e21c0ca42601b0 ("mac80211: document ieee80211_rx() context requirement"). The netif_receive_skb call requires with softirqs disabled. This patch adds a warning if softirqs are pending while calling ieee802154_rx. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: rx: use tasklet instead workqueueAlexander Aring2014-10-271-40/+8Star
| | | | | | | | | | | | 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>
* mac802154: rename dev_workqueue to workqueueAlexander Aring2014-10-251-1/+1
| | | | | | | | 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>
* mac802154: introduce hw_to_local functionAlexander Aring2014-10-251-2/+2
| | | | | | | | | 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>
* mac802154: rename mac802154_priv to ieee802154_localAlexander Aring2014-10-251-6/+6
| | | | | | | | | 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>
* ieee802154: rename ieee802154_dev to ieee802154_hwAlexander Aring2014-10-251-6/+6
| | | | | | | | | | 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>
* mac802154: move mac802154.h to ieee802154_i.hAlexander Aring2014-10-251-1/+1
| | | | | | | | | | This patch moves the mac802154.h internal header to ieee802154_i.h like the wireless stack ieee80211_i.h file. This avoids confusing with the not internal header include/net/mac802154.h header. Additional we get the same naming conversion like mac80211 for this file. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154: mac802154: remove FSF addressAlexander Aring2014-10-251-4/+0Star
| | | | | | | | | This patch removes the FSF address in files which belongs to ieee802154 and mac802154. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Cc: Alan Ott <alan@signal11.us> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* mac802154: cleanup in rx pathVarka Bhadram2014-08-141-3/+2Star
| | | | | | | | | This patch replace the sizeof(struct rx_work) with sizeof(*work) and directly passing the skb in mac802154_subif_rx() 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>
* mac802154: don't deliver packets to devices that are downPhoebe Buckheister2014-06-111-4/+7
| | | | | | | | | | Only one WPAN devices can be active at any given time, so only deliver packets to that one interface that is actually up. Multiple monitors may be up at any given time, but we don't have to deliver to monitors that are down either. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* ieee802154: change _cb handling slightlyPhoebe Buckheister2014-05-151-2/+0Star
| | | | | | | | | | | | | The current mac_cb handling of ieee802154 is rather awkward and limited. Decompose the single flags field into multiple fields with the meanings of each subfield of the flags field to make future extensions (for example, link-layer security) easier. Also don't set the frame sequence number in upper layers, since that's a thing the MAC is supposed to set on frame transmit - we set it on header creation, but assuming that upper layers do not blindly duplicate our headers, this is fine. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: remove unnecessary return'sstephen hemminger2014-02-141-1/+0Star
| | | | | | | | | | | One of my pet coding style peeves is the practice of adding extra return; at the end of function. Kill several instances of this in network code. I suppose some coccinelle wizardy could do this automatically. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac802154: add wpan device-class supportalex.bluesman.smirnov@gmail.com2012-06-271-0/+1
| | | | | | | | | | | | | | | | | | | | Every real 802.15.4 transceiver, which works with software MAC layer, can be classified as a wpan device in this stack. So the wpan device implementation provides missing link in datapath between the device drivers and the Linux network queue. According to the IEEE 802.15.4 standard each packet can be one of the following types: - beacon - MAC layer command - ACK - data This patch adds support for the data packet-type only, but this is enough to perform data transmission and receiving over radio. Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac802154: monitor device supportalex.bluesman.smirnov@gmail.com2012-05-161-0/+1
| | | | | | | | | | Support for monitor device intended to capture all the network activity. This interface could be used by networks sniffers and is already supported by WireShark. That's a good test point to check that basic MAC support works. Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac802154: RX data pathalex.bluesman.smirnov@gmail.com2012-05-161-0/+113
Main RX data path implementation between physical and mac layers. Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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