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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>
2008-07-08net: Delete NETDEVICES_MULTIQUEUE kconfig option.David S. Miller
Multiple TX queue support is a core networking feature. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08netdev: Move _xmit_lock and xmit_lock_owner into netdev_queue.David S. Miller
Accesses are mostly structured such that when there are multiple TX queues the code transformations will be a little bit simpler. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08pkt_sched: Make qdisc_run take a netdev_queue.David S. Miller
This allows us to use this calling convention all the way down into qdisc_restart(). Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08netdev: Make netif_schedule() routines work with netdev_queue objects.David S. Miller
Only plain netif_schedule() remains taking a net_device, mostly as a compatability item while we transition the rest of these interfaces. Everything else calls netif_schedule_queue() or __netif_schedule(), both of which take a netdev_queue pointer. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08netdev: Move gso_skb into netdev_queue.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08mac80211: Decrease number of explicit ->tx_queue references.David S. Miller
Accomplish this by using local variables. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08pkt_sched: Add qdisc_tx_is_noop() helper and use in IPV6.David S. Miller
This indicates if the NOOP scheduler is what is active for TX on a given device. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08net: Clean up explicit ->tx_queue references in link watch.David S. Miller
First, we add a qdisc_tx_changing() helper which returns true if the qdisc attachment is in transition. Second, we remove an assertion warning which is of limited value and is hard to express precisely in a multiqueue environment. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08pkt_sched: Add qdisc_all_tx_empty()David S. Miller
This is a helper function, currently used by IRDA. This is being added so that we can contain and isolate as many explicit ->tx_queue references in the tree as possible. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08pkt_sched: Add qdisc_reset_all_tx().David S. Miller
Isolate callers that want to simply reset all the TX qdiscs from the details of TX queues. Use this in the ISDN code. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08netdev: Move next_sched into struct netdev_queue.David S. Miller
We schedule queues, not the device, for output queue processing in BH. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08pkt_sched: Make netem queue agnostic.David S. Miller
It just wants the root qdisc given an arbitrary qdisc, and that is simply qdisc->dev_queue->qdisc Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Stephen Hemminger <shemminger@vyatta.com>
2008-07-08pkt_sched: Kill stats_lock member of struct Qdisc.David S. Miller
It is always equal to qdisc->dev_queue->lock Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08netdev: Kill qdisc_ingress, use netdev->rx_queue.qdisc instead.David S. Miller
Now that our qdisc management is bi-directional, per-queue, and fully orthogonal, there is no reason to have a special ingress qdisc pointer in struct net_device. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08netdev: Move rest of qdisc state into struct netdev_queueDavid S. Miller
Now qdisc, qdisc_sleeping, and qdisc_list also live there. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08netdev: The ingress_lock member is no longer needed.David S. Miller
Every qdisc is assosciated with a queue, and in the case of ingress qdiscs that will now be netdev->rx_queue so using that queue's lock is the thing to do. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08netdev: Move queue_lock into struct netdev_queue.David S. Miller
The lock is now an attribute of the device queue. One thing to notice is that "suspicious" places emerge which will need specific training about multiple queue handling. They are so marked with explicit "netdev->rx_queue" and "netdev->tx_queue" references. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08pkt_sched: Remove 'dev' member of struct Qdisc.David S. Miller
It can be obtained via the netdev_queue. So create a helper routine, qdisc_dev(), to make the transformations nicer looking. Now, qdisc_alloc() now no longer needs a net_device pointer argument. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08netdev: Create netdev_queue abstraction.David S. Miller
A netdev_queue is an entity managed by a qdisc. Currently there is one RX and one TX queue, and a netdev_queue merely contains a backpointer to the net_device. The Qdisc struct is augmented with a netdev_queue pointer as well. Eventually the 'dev' Qdisc member will go away and we will have the resulting hierarchy: net_device --> netdev_queue --> Qdisc Also, qdisc_alloc() and qdisc_create_dflt() now take a netdev_queue pointer argument. Signed-off-by: David S. Miller <davem@davemloft.net>
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