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2008-07-11igb: Improve multiqueue AIM supportAlexander Duyck
Improve multiqueue performance Change itr_val to reflect ITR timer value instead of ints/sec Cleaned up AIM algorithms in general Based on work by Mitch Williams Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Acked-by: Mitch Williams <mitch.a.williams@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11igb: unused variable warning in igb removeAlexander Duyck
Wrap hw variable declaration in DCA flags to prevent unused variable warning during compilation. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11igb: update suspend resumeAlexander Duyck
Updates the suspend and resume to better handle the possibility of MSIX vector changes. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11net: add netif_napi_del function to allow for removal of napistructsAlexander Duyck
Adds netif_napi_del function which is used to remove the napi struct from the netdev napi_list in cases where CONFIG_NETPOLL was enabled. The motivation for adding this is to handle the case in which the number of queues on a device changes due to a configuration change. Previously the napi structs for each queue would be left in the list until the netdev was freed. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11igb: add support for in kernel LROAlexander Duyck
This patch adds support for the use of the inet_lro module to provide software LRO support. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11igb: add page recycling supportAlexander Duyck
This patch adds support for page recycling by splitting the page into two usable portions and tracking the reference count. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11igb: Add support for quad port WOL and feature flagsAlexander Duyck
Change igb from using a series of boolean operators to using a single flags value that contains a number of different bit flags for all the different features of the adapter. This patch also adds WOL support for quad port adapters. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11igb: add 82576 MAC supportAlexander Duyck
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11igb: Increment driver versionAuke Kok
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11igb: reenable CRC stripping in hardwareAuke Kok
We can remove a clunky workaround for not having the hardware strip the CRC. 82575 silicon as well as the older PCI Express e1000e hardware all work OK in this respect. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11igb: add DCA supportJeb Cramer
Add DCA support in the similar method that it was added to the ixgbe driver recently. DCA allows the network device to put data in the CPU cache and notify the chipset of that event. This reduces cache misses during receives. Signed-off-by: Jeb Cramer <cramerj@intel.com> Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11igb: update ethtool stats to support multiqueueAlexander Duyck
Addesses problems seen earlier with igb driver not correctly reporting rx and tx stats. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11igb: Introduce multiple TX queues with infrastructurePeter P Waskiewicz Jr
This code adds multiple Tx queue infrastructure much like we previously did in ixgbe. The MSI-X vector mapping is the bulk of the change. IAM can now be safely enabled and we've verified that it does work correctly. We can also eliminate the tx ring lock. Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: update copyright dates and versionsJesse Brandeburg
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: make NAPI the only option and the defaultJesse Brandeburg
network maintainers suggest NAPI only drivers are the only way to go. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: cleanup headerJesse Brandeburg
cleaned up some spacing in defines Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: audit use of dev_kfree_skb_anyJesse Brandeburg
calls to kfree_skb_any are only required when calling kfree from interrupt context. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: clean up assignments inside if statementsJesse Brandeburg
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: rx cleanup performance improvementsJesse Brandeburg
rx cleanup should look more like our other drivers that have evolved to nicer performance levels over time. Changes consist of refilling tx buffers to hardware more often, some minor assignment cleanups. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: cleanup checkpatch suggestions that are relevantJesse Brandeburg
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: trivial fix space after forJesse Brandeburg
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: fix spelling errorsJesse Brandeburg
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: whitespace fixupsJesse Brandeburg
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: cleanup space after whileJesse Brandeburg
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: format all if( to be if (Jesse Brandeburg
this patch is trivial but because I want to have everything be nice and tidy I'm updating it. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: clean up un-necessary declarationsJesse Brandeburg
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: add copybreak parameterJesse Brandeburg
copybreak code was already in the driver, allow the user to turn it off if they don't like it. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: update readme textJesse Brandeburg
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: remove lltx support and update tx routineJesse Brandeburg
a) kernel developers suggest LLTX is broken and unsafe to use, remove it. b) remember to pre-stop the queue if we won't have room c) removing lltx means we can remove our tx lock Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: fix unload race with timersJesse Brandeburg
ixgb needs to call flush scheduled work to flush any timers before unregistering the netdev. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: fix race on rx_buffer_len in mtu changeJesse Brandeburg
some random coverage testing found that when changing mtu under heavy traffic load, NAPI would use the rx_buffer_len variable after it had been changed by change_mtu. Similar to e1000 bugs found long ago. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: move time stamp set before setting dma pointerJesse Brandeburg
a user pointed out that setting variables out of order with respect to the checks we make for tx timeout handling could result in a race where ->dma was set but ->time_stamp was set to the old value. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: don't allow too small MTUJesse Brandeburg
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: check down state before enable irqJesse Brandeburg
in order to prevent the case where poll_disable is waiting on our device to permanently, check the flag to make sure we're not down or closing down before re-enabling interrupts. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: leave room for extra hardware memory usageJesse Brandeburg
ixgb hardware (not ixgbe) has a problem where it might dma past the end of a buffer in certain cases. leave 8 bytes extra room. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: fix bug in descriptor ring due to prefetch corruptionJesse Brandeburg
there was one more bug hidden in the prefetch routines in ixgb hardware that force us to remove it completely. Writebacks were being done on descriptors with stale data due to internal hardware fifo corruption. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: repeat 32 bit ioremap cleanupJesse Brandeburg
this patch has been made to many other drivers in kernel to fix the storage of 64 bit resources in 32 bit variables. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ixgb: maybe stop tx port missed a pieceJesse Brandeburg
back when maybe stop tx was added to the ixgb driver some mistakes were made and the driver a) didn't remove the tx lock, which is now un-necessary b) didn't change the restart code to be compliant with maybe_stop Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11ucc_geth: delete non NAPI code from the driver.Francois Romieu
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11gianfar: delete non NAPI code from the driver.Francois Romieu
Compile-tested only. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11via-rhine: delete non NAPI code from the driver.Francois Romieu
Compile-tested only. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11cxgb: delete non NAPI code from the driver.Francois Romieu
Compile-tested only. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11S2io: Version update for IOMMU overflow checking and enable msi-x link ↵Sreenivasa Honnur
interrupts patches. - Updated version number Signed-off-by: Santosh Rastapur <santosh.rastapur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11S2io: Enable msi-x link interrupts.Sreenivasa Honnur
- Enable msi-x link interrupts because the timer based scheduler was getting cancelled causing the link state to be lost with repetitive card up/downs when changing the mtu. - Unmask mac_rmac_link interrupts only for Xframe I and prevent a spurious link interrupt in Xframe II. - Stop the tx queue and indicate link down when card is down Signed-off-by: Santosh Rastapur <santosh.rastapur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11S2io: Fix IOMMU overflow checking.Sreenivasa Honnur
- Fix IOMMU overflow checking. As reported by Andi Kleen <ak@linux.intel.com> removed check for zero dma address. Signed-off-by: Santosh Rastapur <santosh.rastapur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11via-velocity: add velocity_set_rxbufsize helperFrancois Romieu
It removes a dependancy from velocity_init_rd_ring to dev->mtu. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11via-velocity: move residual free rx descriptors count register updateFrancois Romieu
Updates of the RBRDU have two different meanings depending on their context: 1. the receiving process has not started - the value which is written into the RBRDU register is supposed to be the free rx descriptors count (rounded to a multiple of 4) 2. the receiving process is running - the value increments the count above (sic) The update is currently issued deep inside the rx replenish chain (see velocity_give_many_rx_descs). Let's propagate enough information to the caller so that the rx replenish functions do not depend on hardware any more. It is needed to perform the Rx/Tx buffers housekeeping when MTU changes. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11via-velocity: lean and clean velocity_init_ringsFrancois Romieu
- PCI consistent areas need no memset - use dev_err instead of plain printk - avoid a few casts Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11via-velocity: remove the bounce buffersFrancois Romieu
Executive summary: the bounce buffers are in my way - they use something like a 64 * 1500 bytes area of PCI consistent area - they are not resized when the MTU changes - they are used - to hand-pad undersized packets. skb_pad anyone ? - to linearize fragmented skbs whose fragment count goes beyond the 7 fragments hardware limit in order to claim scatter-gather support Actually the SG code is commented out and I wonder if it could not be implemented (ab-)using the large send feature of the chipset since the latter should support some multi-descriptor packet transmitting. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Fixed-by: Séguier Régis <rseguier@e-teleport.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-08netdev: Move atomic queue state bits into netdev_queue.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
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