- 08 Jul, 2014 40 commits
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Arvid Brodin authored
This patch removes the separate paths for frames coming from the outside, and frames sent from the HSR device, and instead makes all frames go through hsr_forward_skb() in hsr_forward.c. This greatly improves code readability and also opens up the possibility for future support of the HSR Interlink device that is the basis for HSR RedBoxes and HSR QuadBoxes, as well as VLAN compatibility. Other improvements: * A reduction in the number of times an skb is copied on machines without HAVE_EFFICIENT_UNALIGNED_ACCESS, which improves throughput somewhat. * Headers are now created using the standard eth_header(), and using the standard hard_header_len. * Each HSR slave now gets its own private skb, so slave-specific fields can be correctly set. Signed-off-by:
Arvid Brodin <arvid.brodin@alten.se> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Arvid Brodin authored
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Arvid Brodin authored
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Arvid Brodin authored
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Arvid Brodin authored
Also try to prevent some possible slave dereference race conditions. This is finalized in the next patch, which abandons the slave array in favour of a list_head list and list RCU. Signed-off-by:
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Arvid Brodin authored
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Arvid Brodin authored
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Arvid Brodin authored
Also move the frame receive handler to hsr_slave.c. Signed-off-by:
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Arvid Brodin authored
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hayeswang authored
When the system is too busy to complete the urb, the tx timout function would be called. This causes the other tx urbs would be killed, too. Increase the tx timeout to avoid it. Signed-off-by:
Hayes Wang <hayeswang@realtek.com> Signed-off-by:
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Fabian Frederick authored
ic_dev_xid is only used in ipconfig.c Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: netdev@vger.kernel.org Signed-off-by:
Fabian Frederick <fabf@skynet.be> Signed-off-by:
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David S. Miller authored
Tom Lendacky says: ==================== amd-xgbe: AMD 10Gb Ethernet driver updates The following series fixes some bugs and provides new/changed support in the driver. - Fix a debugfs backward compatibility issue introduced by a previous patch - Write to the interrupt enablement register, not the status register when setting MTL interrupts - Call netif_napi_del whenever the ndo_stop operation is called (to match the call to netif_napi_add on ndo_open) - Peformance enhancements: - Adjusted default coalescing settings - AXI DMA changes (burst length size and cache settings) - ioread/iowrite reduction during interrupt - Napi poll updates - AXI DMA settings based on device tree property to account for a change in the ARM64 default cache operations assignment This patch series is based on net-next. ==================== Signed-off-by: -
Lendacky, Thomas authored
The default cache operations for ARM64 were changed during 3.15. To use coherent operations a "dma-coherent" device tree property is required. If that property is not present in the device tree node then the non-coherent operations are assigned for the device. Add support to the amd-xgbe driver to assign the AXI DMA cache settings based on whether the "dma-coherent" property is present in the device node. If present, use settings that work with the caches. If not present, use settings that do not look at the caches. Signed-off-by:
Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:
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Lendacky, Thomas authored
This patch provides some general performance enhancements for the driver: - Modify the default coalescing settings (reduce usec, increase frames) - Change the AXI burst length to 256 bytes (default was 16 bytes which was smaller than a cache line) - Change the AXI cache settings to write-back/write-allocate which allocate cache entries for received packets during the DMA since the packet will be processed soon afterwards - Combine ioread/iowrite when disabling both the Tx and Rx interrupts - Change to processing the Tx/Rx channels in pairs - Only recycle the Rx descriptors when a threshold of dirty descriptors is reached Signed-off-by: -
Lendacky, Thomas authored
Currently the napi context is added using netif_napi_add each time the ndo_open operation is called. However, there is not a corresponding netif_napi_del call during the ndo_stop operation. If the device ndo_open operation was called more than once an infinite loop occurs during module unload. Add a call to netif_napi_del during the ndo_stop operation. Signed-off-by:
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Lendacky, Thomas authored
When initializing the MTL interrupts the interrupt status register is written to instead of the interrupt enable register. Since no MTL interrupts are being enabled and the default state is for MTL interrupts to be disabled this did not cause a problem, but needs to be fixed to target the correct register. Signed-off-by:
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Lendacky, Thomas authored
The initial change from sscanf to kstrtouint broke backward compatbility by using a base of "0" in the kstrtouint call. This allowed for entering decimal, hexadecimal or octal as input where previously the sscanf always interpreted the input as hexadecimal. Additionally, -EIO was returned on error prior to this change and now it is whatever the error value that is returned by kstrtouint. Change the base value of the kstrtouint from 0 to 16 and return -EIO on error. Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
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Rasmus Villemoes authored
The header file include/linux/arcdevice.h #defines bool to int, if bool is not already #defined. However, the files which use that header file seem to rely on that #define (unconditionally) being in effect: the prototypes for the functions arcrimi_reset, com20020_reset, com90io_reset, com90xx_reset (whose addresses are assigned to the hw.reset member of struct arcnet_local) use int explicitly. Moreover, that #define is an accident waiting to happen (scenario: inclusion of arcdevice.h followed by inclusion of some header which declares function prototypes using bool). Also, #include <linux/types.h> must appear before #include <linux/arcdevice.h> (the compiler wouldn't like "typedef _Bool int"). Since none of the files using arcdevice.h declare variables of type "bool", the patch is actually quite simple, unlike the commit message. Signed-off-by:
Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by:
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Govindarajulu Varadarajan authored
enic_set_coalesce() has two problems. * It should return -EINVAL and not -EOPNOTSUPP for invalid coalesce values. * In case of MSIX, enic_set_coalesce return error after applying requested coalescing setting partially. We should either apply all the setting requeste and return success or apply non and return error. * This patch also simplifies the algo. This was introduced by '7c2ce6e6 enic: Add support for adaptive interrupt coalescing' These changes were suggested by Ben Hutchings here http://www.spinics.net/lists/netdev/msg283972.html Also change enic driver version. Signed-off-by:
Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by:
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Jiri Pirko authored
These warnings are no longer relevant. Even when last slave is removed, there is a valid address assigned to bond (random). The correct functionality of vlans is ensured by maintaining unicast list in vlan_sync_address(). Suggested-by:
Jay Vosburgh <jay.vosburgh@canonical.com> Signed-off-by:
Jiri Pirko <jiri@resnulli.us> Acked-by:
Veaceslav Falico <vfalico@gmail.com> Signed-off-by:
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David S. Miller authored
Alexander Aring says: ==================== at86rf230: rework driver implementation this patch series includes a rework of the at86rf230 driver. There are several changes: - Add regmap support. - Merge at86rf212 operations with generic at86rf2xx operations, all chips supports these operations. - Drop of irqworker. This is a workqueue which will scheduled by an irq to handle synchronous spi handling. Instead using asynchronous spi handling, then no scheduler is involved at irq handling. - Also detected some bugs by receiving frame like CRC can be correct and a 802.15.4 frame length could be above 127 bytes. This would crash the whole kernel (but should be handled by the mac layer). Another bug is the handling with RX_SAFE_MODE which protect the frame buffer after a readout. This is currently not working because we read out the buffer twice and the first one to get the frame size. Solution is to readout always the whole frame buffer. - Added some timing relevants things from the datasheet for state changes And IEEE 802.15.4 standard like interframe spacing. Interframe spacing is needed to insert some receiving space time between frame transmitting. This should be also handled by MAC layer, but it's currently a workaround to add this inside the driver layer. - Add some callback setting for chip specific handling, instead of runtime decisions if (is_chip_type()). Callbacks are set only once at probe time. - We don't using a force state change anymore. A force state change will do a abort of receiving frames while we want to transmit a new frame. This should decrease the drop rate of packets. - And many others changes and bug fixes... changes since v3: - fix irq polarity in patch ("at86rf230: rework irq_pol setting"). changes since v2: - add check if necessary functions are implemented when hw flags are set in patch ("mac802154: at86rf230: add hw flags and merge ops"). I choosed the second variant. - remove unnecessary includes for workqueue and mutex in patch ("at86rf230: rework transmit and receive"). - remove unnecessary cast in patch ("at86rf230: rework transmit and receive"). - acivate regmap cache with REGCACHE_RBTREE in patch ("at86rf230: add regmap support"). ==================== Signed-off-by: -
Alexander Aring authored
Signed-off-by:
Alexander Aring <alex.aring@gmail.com> Signed-off-by:
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Alexander Aring authored
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Alexander Aring authored
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Alexander Aring authored
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Alexander Aring authored
This patch removes the current synchron state change function and add a new function for a state assert. Change the start and stop callbacks to use this new synchron state change behaviour. It's a wrapper around the async state change function. Signed-off-by:
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Alexander Aring authored
This patch rework the irq_pol register setting for rising and falling interrupt settings only. The default behaviour should be rising flag. Also use IRQ_TYPE_* defines instead of IRQF_* defines. There is no functionality change but irq_get_trigger_type returns IRQ_TYPE_* defines. Signed-off-by:
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Alexander Aring authored
There is no need to set this bit in start callback which could be called more than once. Signed-off-by:
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Alexander Aring authored
This patch is a complete reimplementation of transmit and receive handling for the at86rf230 driver. It solves also six bugs: First: The RX_SAFE_MODE is enabled and the transceiver doesn't leave the receive state while the framebuffer isn't read by a CMD_FB command. This is useful to read out the frame and don't get into another receive or transmit state, otherwise the frame would be overwritten. The current driver do twice CMD_FB calls, the first one leaves this protection. Second: Sometimes the CRC calculation is correct and the length field is greater 127. The current mac802154 layer and filter of a at86rf2xx doesn't check on this and the kernel crashes. In this case the frame is corrupted, we send the whole receive buffer to the next layer which can be useful for sniffing. Thrid: There is a undocumented race condition. When we are go into the RX_AACK_ON state the transceiver could be changed into RX_AACK_BUSY state. This is a normal behaviour. In this case the transceiver received a SHR while assert wasn't finished. Fourth: It also handle some more "correct" state changes. In aret mode the transceiver need to go to TX_ON before the transceiver go into RX_AACK_ON. Fifth: The programming model [0] describes also a error handling in ARET mode if the trac status is different than zero. This is patch adds support for handling this. Sixth: In receive handling the transceiver should also get the trac status according [0]. The driver could use the trac status as error statistic handling, but the driver doesn't use this currently. There is maybe some timing behaviour or the read of this register change some transceiver states. In addition the irqworker is removed. Instead we do async spi calls and no scheduling is involved anymore. The transmit function is also asynchron but with a wait_for_completion handling. The mac802154 layer doesn't support asynchron transmit handling right now. The state change behaviour is now changes, before it was: 1. assert while(!STATE_TRANSITION_IN_PROGRESS) 2. state change 3. assert while(!STATE_TRANSITION_IN_PROGRESS) 4. assert once(wanted state != current state) Sometimes a unexcepted state change occurs when 4. assert was violated. The new state change behaviour is: 1. assert while(!STATE_TRANSITION_IN_PROGRESS) 2. state change 3. wait state change timing according datasheet 4. assert once(wanted state != current state) This behaviour is described in the at86rf231 software programming model [0]. The state change documentation in this programming guide should also valid for at86rf212 and at86rf233 chips. The transceiver don't do a FORCE_TX_ON while we want to transmit a PDU. The new behaviour is a TX_ON and wait a receiving time (tFrame + tPAck). If we are still in RX_AACK_BUSY then we transmit a FORCE_TX_ON as timeout handling. The different is that FORCE_TX_ON aborts receiving and TX_ON waits if RX_AACK_BUSY is finished. This should decrease the drop rate of packets. [0] http://www.atmel.com/Images/AVR2022_swpm231-2.0.zipSigned-off-by:
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Alexander Aring authored
To set the CCA_ED_THRES register the calculation for at86rf23x is different than for at86rf212. This patch adds a new callback for this calculation in chip data struct. Signed-off-by:
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Alexander Aring authored
This patch adds a new at86rf2xx_chip_data structure which holds device specific attributes. Instead of runtime decisions "if (is212())" we set callbacks/attributes while device detection. Signed-off-by:
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Alexander Aring authored
This patch drops the current lowlevel spi calls for the detect device function instead we handle this via regmap. Also put the detection of in a seperate function and set all device specific attributes while detection. Signed-off-by:
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Alexander Aring authored
This patch adds regmap support for the at86rf230 driver and drop the lowlevel spi access functions and use the regmap access functions. Signed-off-by:
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Alexander Aring authored
This patch adds new mac802154 hw flags for transmit power, csma and listen before transmit (lbt). These flags indicates that the transceiver supports these features. If the flags are set and the driver doesn't implement the necessary functions, then ieee802154_register_device returns -ENOSYS "Function not implemented". This patch merges also all at86rf230 operations into one operations structure and set the right hw flags for the at86rf230 transceivers. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-nextDavid S. Miller authored
Jeff Kirsher says: ==================== Intel Wired LAN Driver Updates 2014-07-02 This series contains updates to i40e and i40evf. Anjali fixes a possible race where we were trying to free the dummy packet buffer in the function that created it, so cleanup the dummy packet buffer in i40e_clean_tx_ring() instead. Also fixes an issue where the filter program routine was not checking if there were descriptors available for programming a filter. Mitch fixes unnecessary delays when sending the admin queue commands by moving a declaration up one level so we do not dereference it out of scope. Fixes an issue with the VF where if the admin queue interrupts get lost for some reason, the VF communication will stall as the VFs have no way of reaching the PF. To alleviate this condition, go ahead and check the ARQ every time we run the service task. Updates i40evf to allow the watchdog to fire vector 0 via software, which makes the driver tolerant of dropped interrupts on that vector. Paul fixes a shifted '1' to be unsigned to avoid shifting a signed integer. Jesse disables TPH by default since it is currently not enabled in the current hardware. Also finishes the i40e implementation of get_settings for ethtool. Catherine adds a new variable (hw.phy.link_info.an_enabled) to track whether auto-negotiation is enabled, along with the functionality to update the variable. Adds the functionality to set the requested flow control mode. Adds i40e implementation of setpauseparam and set_settings to ethtool. ==================== Signed-off-by: -
David S. Miller authored
Russell King says: ==================== Freescale ethernet driver updates Here's the first batch of patches for the Freescale FEC ethernet driver. They require the previously applied "net: fec: Don't clear IPV6 header checksum field when IP accelerator enable" patch. ==================== Signed-off-by: -
Russell King authored
fec_enet_alloc_buffers() assumes that kmalloc() will never fail, which is an invalid assumption. Fix this by implementing a common error cleanup path, and use it to also clean up after failed bounce buffer allocation. Acked-by:
Fugang Duan <B38611@freescale.com> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by:
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Russell King authored
Ensure that we do not double-free any allocations, and that any transmit skbuffs are properly freed when we clean up the rings. Acked-by:
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Russell King authored
Avoid writing any state until we're certain we can proceed with the transmission: this avoids writing mapping error address values to the descriptors, or setting the skbuff pointer until we have successfully mapped the skb. Acked-by:
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Russell King authored
Allocate, and then map the receive skb before writing any data to the ring descriptor or storing the skb. When freeing the receive ring entries, unmap and free the skb, and then clear the stored skb pointer. This means we have ring data and skb pointer in one of two states: either both fully setup, or nothing setup. This simplifies the cleanup, as we can use just the skb pointer to indicate whether the descriptor is setup, and thus avoids potentially calling dma_unmap_single() on a DMA error value. Acked-by:
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