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2015-09-17ipv4: Compute net once in ip_forward_finishEric W. Biederman
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-17ipv4: Compute net once in ip_forwardEric W. Biederman
Compute struct net from the input device in ip_forward before it is used. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-17net: Merge dst_output and dst_output_skEric W. Biederman
Add a sock paramter to dst_output making dst_output_sk superfluous. Add a skb->sk parameter to all of the callers of dst_output Have the callers of dst_output_sk call dst_output. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-17xfrm: Remove unused afinfo method init_dstEric W. Biederman
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-17netfilter: Pass net to nf_hook_threshEric W. Biederman
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-17netfilter: Store net in nf_hook_stateEric W. Biederman
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-17netfilter: Remove !CONFIG_NETFITLER definition of nf_hook_threshEric W. Biederman
The !CONFIG_NETFILTER definition of nf_hook_thresh calls okfn when the CONFIG_NETFITLER defintion does not, making it buggy. As the !CONFIG_NETFILTER defintion of nf_hook_thresh is not used remove it rather than fix it. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-17Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue Jeff Kirsher says: ==================== Intel Wired LAN Driver Updates 2015-09-15 This series contains updates to ixgbe and fm10k. Don fixes a ixgbe issue by adding checks for systems that do not have SFP's to avoid incorrectly acting on interrupts that are falsely interpreted as SFP events. Alex Williamson adds a fix for ixgbe to disable SR-IOV prior to unregistering the netdev to avoid issues with guest OS's which do not support hot-unplug or their hot-unplug is broken. Alex Duyck update the lowest limit for adaptive interrupt interrupt moderation to about 12K interrupts per second for ixgbe. This change increases the performance for ixgbe. Also fixed up fm10k to remove the optimization that assumed that all fragments would be limited to page size, since that assumption is incorrect as the TCP allocator can provide up to a 32K page fragment. Updated fm10k to add the MAC address to the list of values recorded on driver load. Fixes fm10k so that we only trigger the data path reset if the fabric is ready to handle traffic to avoid triggering the reset unless the switch API is ready for us. Jacob updates the fm10k driver to disable the service task during suspend and re-enable it after we resume. If we don't do this, the device could be UP when you suspend and come back from resume as DOWN. Also update fm10k to prevent the removal of default VID rules, and correctly remove the stack layers information of the VLAN, but then return to forwarding that VID as untagged frames. If we deleted the VID rules here, we would begin dropping traffic due to VLAN membership violations. Fixed fm10k to use pcie_get_minimum_link(), which is useful in cases where we connect to a slot at Gen3, but the slot is behind a bus which is only connected at Gen2. Updated fm10k to update the netdev permanent address during reinit instead of up to enable users to immediately see the new MAC address on the VF even if the device is not up. Adds the creation of VLAN interfaces on a device, even while the device is down for fm10k. Fixed an issue where we request the incorrect MAC/VLAN combinations, and prevents us from accidentally reporting some frames as VLAN tagged. Provided a couple of trivial fixes for fm10k to fix code style and typos in code comments. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-17net-sysfs: get_netdev_queue_index() cleanupThadeu Lima de Souza Cascardo
Redo commit ed1acc8cd8c22efa919da8d300bab646e01c2dce. Commit 822b3b2ebfff8e9b3d006086c527738a7ca00cd0 ("net: Add max rate tx queue attribute") moved get_netdev_queue_index around, but kept the old version. Probably because of a reuse of the original patch from before Eric's change to that function. Remove one inline keyword, and no need for a loop to find an index into a table. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com> Fixes: 822b3b2ebfff ("net: Add max rate tx queue attribute") Acked-by: Or Gerlitz <ogerlitz@mellanox.com> Acked-by: John Fastabend <john.r.fastabend@intel.com> Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-17can: Allwinner A10/A20 CAN Controller support - Kernel moduleGerhard Bertelsmann
Kernel module for Allwinner A10/A20 CAN controller. Signed-off-by: Gerhard Bertelsmann <info@gerhard-bertelsmann.de> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2015-09-17can: Allwinner A10/A20 CAN Controller support - Devicetree bindingsGerhard Bertelsmann
Devicetree bindings for Allwinner A10/A20 CAN controller. Signed-off-by: Gerhard Bertelsmann <info@gerhard-bertelsmann.de> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2015-09-17net: smc91x: convert pxa dma to dmaengineRobert Jarzmik
Convert the dma transfers to be dmaengine based, now pxa has a dmaengine slave driver. This makes this driver a bit more PXA agnostic. The driver was tested on pxa27x (mainstone) and pxa310 (zylonite), ie. only pxa platforms. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Cc: Russell King <linux@arm.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-17Bluetooth: hci_qca: Coding style clean upPrasanna Karthik
Cleanup patch to fix spaces required reported by checkpatch Signed-off-by: Prasanna Karthik <mkarthi3@visteon.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17Bluetooth: bt3c_cs: clean up obsolete functionsPrasanna Karthik
simple_strtoul is obsolete, use kstrtoul instead reported by checkpatch. Signed-off-by: Prasanna Karthik <mkarthi3@visteon.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17Bluetooth: Remove SCO fragments on connection closeKuba Pawlak
SCO packet reassembler may have a fragment of SCO packet, from previous connection, cached and not removed when SCO connection is ended. Packets from new SCO connection are then going to be attached to that fragment, creating an invalid SCO packets. Controllers like Intel's WilkinsPeak are always fragmenting SCO packet into 3 parts (#1, #2, #3). Packet #1 contains SCO header and audio data, others just audio data. if there is a fragment cached from previous connection, i.e. #1, first SCO packet from new connection is going to be attached to it creating packet consisting of fragments #1-#1-#2. This will be forwarded to upper layers. After that, fragment #3 is going to be used as a starting point for another SCO packet. It does not contain a SCO header, but the code expects it, casts a SCO header structure on it, and reads whatever audio data happens to be there as SCO packet length and handle. From that point on, we are assembling random data into SCO packets. Usually it recovers quickly as initial audio data contains mostly zeros (muted stream), but setups of over 4 seconds were observed. Issue manifests itself by printing on the console: Bluetooth: hci0 SCO packet for unknown connection handle 48 Bluetooth: hci0 SCO packet for unknown connection handle 2560 Bluetooth: hci0 SCO packet for unknown connection handle 12288 It may also show random handles if audio data was non-zeroed. Hcidump shows SCO packets with random length and handles. Few messages with handle 0 at connection creation are OK for some controllers (like WilkinsPeak), as there are SCO packets with zeroed handle at the beginning (possible controller bug). Few of such messages at connection end, with a handle looking sane (around 256, 512, 768 ...) is also OK, as these are last SCO packets that were assembled and sent up, before connection was ended, but were not handled in time. This issue may still manifest itself on WilkinsPeak as it sometimes, at SCO connection creation, does not send third fragment of first SCO packet (#1-#2-#1-#2-#3...). This is a firmware bug and this patch does not address it. Signed-off-by: Kuba Pawlak <kubax.t.pawlak@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17Bluetooth: hci_intel: Enable IRQ wake capabilityLoic Poulain
We need to explicitly enable the IRQ wakeup mode to let the controller wake the system from sleep states (like suspend-to-ram). PM suspend/resume callbacks now call the generic intel device PM functions after enabling/disabling IRQ wake. Signed-off-by: Loic Poulain <loic.poulain@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17Bluetooth: hci_intel: Give priority to LPM packetsLoic Poulain
Change the way to insert LPM packets into the txq. Use skb_queue_head instead of skb_queue_tail to always prioritise LPM packets over potential tx queue content. Signed-off-by: Loic Poulain <loic.poulain@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17atusb: add handling for different chipnamesAlexander Aring
This patch supports handling for printout different chipnames between atusb and rzusb. The rzusb contains an at86rf230 and atusb an at86rf231 transceiver. Cc: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17Bluetooth: Fix typo in smp_ah comment for hash functionMarcel Holtmann
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-09-17Bluetooth: hci_bcm: Add wake-up capabilityFrederic Danis
Retrieve the Interruption used by BCM device, which can be declared as Interruption or GpioInt in the ACPI table. Retrieve IRQ polarity from the ACPI table to use it for host_wake_active parameter of Setup Sleep vendor specific command. Configure BCM device to wake-up the host. Enable IRQ wake while suspended. Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17Bluetooth: btusb: Use btintel_load_ddc_config for device configLoic Poulain
btintel_load_ddc_config is now part of btintel. Signed-off-by: Loic Poulain <loic.poulain@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17Bluetooth: hci_intel: Add Device configurationLoic Poulain
Apply DDC parameters once controller is in operational mode. Signed-off-by: Loic Poulain <loic.poulain@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17Bluetooth: btintel: Add Device Configuration supportLoic Poulain
btintel_load_ddc_config retrieves the ddc file and sends its content via DDC commands (opcode 0xfc8b). The ddc file should contain one or more DDC structures. A DDC structure is composed of the folowing fields: field: | DDC LEN | DDC ID | DDC VALUE | size: | 1 byte | 2 bytes | DDC LEN - 2 | Signed-off-by: Loic Poulain <loic.poulain@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17Bluetooth: hci_intel: Fix warnings due to unused lpm functionsLoic Poulain
intel_lpm_suspend/resume are only used in case of CONFIG_PM. Signed-off-by: Loic Poulain <loic.poulain@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17Bluetooth: btintel: fix warningVincent Stehlé
Fix compilation the following compilation warning, which happens when CONFIG_BT_INTEL is not set: drivers/bluetooth/btintel.h:98:13: warning: ‘btintel_version_info’ defined but not used [-Wunused-function] static void btintel_version_info(struct hci_dev *hdev, struct intel_version *ver) ^ Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: af_ieee802154: fix typo in comment.Stefan Schmidt
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: docs: fix project name to linux-wpan as well as some typosStefan Schmidt
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17at86rf230: detailed edge triggered irq warningAlexander Aring
This patch introduce a more detailed information why edge triggered irq's are currently not recommended. It could be that rising/falling edge detection can happen while the irq is disabled. Suggested-by: Stefan Schmidt <stefan@osg.samsung.com> 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>
2015-09-17at86rf230: add debugfs supportAlexander Aring
This patch introduce debugfs support for collect trac status stats. To clear the stats ifdown the interface of at86rf230 and start the interface again. 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>
2015-09-17at86rf230: interrupt tx with force trx_offAlexander Aring
To abort a TX_ARET_BUSY state it's recommended to switch into TRX_OFF state by doing STATE_TRX_FORCE_OFF. This patch will do always a TRX_OFF state change when the transceiver stucks in any state. From TRX_OFF we can switch to the states which are also possible by TX_ON state. 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>
2015-09-17at86rf230: change trac status check behaviourAlexander Aring
When transmit is done, indicated by trx_end irq, we do first a force state change to TX_ON and then checking the trac status, if the trac status is unequal zero we do a state change to TRX_OFF. This patch changes to the following behaviour, we first check on trac status after trx_end occurs and then doing a normal change to TX_ON without do the state change to TRX_OFF when trac status is unequal zero. The reasons are that the datasheet doesn't described when the trac status register is cleared, we should doing to evaluate the trac status at first. The reason to remove the TRX_OFF change if the trac status is unequal to zero and it was force is the following paragraph inside The at86rf2xx datasheets: "Using FORCE_PLL_ON to interrupt an TX_ARET transaction, it is recommended to check register bits [7:5] of register address 0x32 for value 0. If this value is different, TRX_CMD sequence FORCE_TRX_OFF shall be used immediately followed by TRX_CMD sequence PLL_ON. This performs a state transition to PLL_ON." The meaning is here "to interrupt an TX_ARET transaction" in case of trx_end interrupt the "TX_ARET transaction" is already done and we don't interrupt the "TX_ARET transaction" by doing the change to TX_ON (PLL_ON) here. Additional I changed the force change to normal TX_ON which seems to work here. 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>
2015-09-17ieee802154: 6lowpan: use correct ESC value for dispatchStefan Schmidt
The ESC dispatch value has some history and it originally was 0x7f in rfc4944 (see section-5.1). With the release of rfc6282 this value got part of the LOWPAN_IPHC range and was no longer available for ESC. Instead 0x40 was used as replacement (see section-2 in rfc6282). We have been checking the dispatch byte in an order where IPHC would always be evaluated before ESC and thus we would never reach the ESC check as the IPHC range already covers this value. Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: fix drop return valueAlexander Aring
This patch changes the return value of lowpan packet receive handler to the correct NET_RX_DROP instead RX_DROP. This issue was detected by sparse and reported from Marcel: net/ieee802154/6lowpan/rx.c:329:32: expected int net/ieee802154/6lowpan/rx.c:329:32: got restricted lowpan_rx_result ... Reported-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: remove tx full-size calc workaroundAlexander Aring
This patch removes a workaround for datagram_size calculation while doing fragmentation on transmit. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: remove packet type to hostAlexander Aring
This patch remove the packet_type to host and leave the mac pkt_type. By running 'grep -r "pkt_type" net/ipv6', the IPv6 stack will evaluate this value for PACKET_BROADCAST. Instead of overwriting this value we will leave the mac value there which is broadcasts if the mac frame was a broadcast frame. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: check on valid 802.15.4 frameAlexander Aring
This patch adds frame control checks to check if the received frame is something which could contain a 6LoWPAN packet. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: add check for reserved dispatchAlexander Aring
This patch adds checks for reserved dispatch value. When we have a reserved dispatch value we should drop the skb immediately. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: add handler for all dispatch valuesAlexander Aring
This patch adds dummy handlers for all known IEEE 802.15.4 dispatch values which prints a warning that we don't support these dispatches right now. Also we add a warning to the RX_CONTINUE case inside of lowpan_rx_handlers_result which should now never happend. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: add generic lowpan header checkAlexander Aring
This patch introduce an earlier check if a 6LoWPAN frame can be valid. This contains at first for checking if the header contains a dispatch byte and isn't the nalp dispatch value, which means it isn't a 6LoWPAN packet. Also we add a check if we can derference the dispatch value by checking if skb->len is unequal zero. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee820154: 6lowpan: dispatch evaluation reworkAlexander Aring
This patch complete reworks the evaluation of 6lowpan dispatch value by introducing a receive handler mechanism for each dispatch value. A list of changes: - Doing uncompression on-the-fly when FRAG1 is received, this require some special handling for 802.15.4 lltype in generic 6lowpan branch for setting the payload length correct. - Fix dispatch mask for fragmentation. - Add IPv6 dispatch evaluation for FRAG1. - Add skb_unshare for dispatch which might manipulate the skb data buffer. Cc: Jukka Rissanen <jukka.rissanen@linux.intel.com> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: earlier skb->dev switchAlexander Aring
We should change the skb->dev pointer earlier to the lowpan interface Sometimes we call iphc_decompress which also use some netdev printout functionality. This patch will change that the correct interface will be displayed in this case, which should be the lowpan interface. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: trivial checks at firstAlexander Aring
This patch moves some trivial checks at first before calling skb_share_check which could do some memcpy if the buffer is shared. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: cleanup pull of iphc bytesAlexander Aring
This patch cleanups the pull of the iphc bytes. We don't need to check if the skb->len contains two bytes, this will be checked by lowpan_fetch_skb_u8. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: change if lowpan dev is runningAlexander Aring
We don't need to check if the wpan interface is running because the lowpan_rcv is the packet layer receive handler for the wpan interface. Instead doing a check if wpan interface is running we should check if the lowpan interface is running before starting 6lowpan adaptation layer. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: remove EXPORT_SYMBOLAlexander Aring
This function is used internally inside of ieee802154 6lowpan module only and not outside of any other module. We don't need to export this function then. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: remove set to zeroAlexander Aring
Internal mechanism by calling netdev_alloc which use kzalloc already sets these variables to zero. This patch cleanup the setup of net_device. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: remove check on nullAlexander Aring
This patch removes one check on null which should be already done by checking before for ARPHRD_IEEE802154. All ARPHRD_IEEE802154 and ARPHRD_IEEE802154_MONITOR should have wdev->ieee802154_ptr, where ARPHRD_IEEE802154 is currently a node interface only. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: register packet layer while openAlexander Aring
This patch moves the open count handling while doing open of a lowpan interface. We need the packet handler register at first when one lowpan interface is up. There exists a small case when all lowpan interfaces are down and the 802154 packet layer is still registered. To reduce some overhead we will register the packet layer when the first lowpan interface comes up and unregister when the last interface will become down. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17ieee802154: 6lowpan: change dev vars to wdev and ldevAlexander Aring
Inside the IEEE 802.15.4 6LoWPAN subsystem we use two interfaces which are wpan and lowpan interfaces. Instead of using always the variable name "dev" for both we rename the "dev" variable to wdev which means the wpan net_device and ldev which means a lowpan net_device. This avoids confusing and always looking back to see which net_device is meant by the variable name "dev". Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-17Bluetooth: btmrvl: skb resource leak, and double free.Kieran Bingham
if btmrvl_tx_pkt() is called, and the branch if (skb_headroom(skb) < BTM_HEADER_LEN) evaluates positive, a new skb is allocated via skb_realloc_headroom. The original skb is stored in a tmp variable, before being free'd. However on success, the new skb, is not free'd, nor is it returned to the caller which will then double-free the original skb. This issue exists from the original driver submission in commit: #132ff4e5fa8dfb71a7d99902f88043113947e972 If this code path had been alive, it would have been noted from the double-free causing a panic. All skb's here should be allocated through bt_skb_alloc which adds 8 bytes as headroom, which is plenty against the 4 bytes pushed on by this driver. This code path is dead, and buggy at the same time, so the cleanest approach is to remove the affected branch. Reported by coverity (CID 113422) Signed-off-by: Kieran Bingham <kieranbingham@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>