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path: root/drivers/net/ibmveth.c
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* powerpc: Cleanup from l64 to ll64 change: drivers/netStephen Rothwell2009-01-12
| | | | | | | | These are powerpc specific drivers. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* ibmveth: use consistent typesStephen Rothwell2009-01-06
| | | | | | | | | | | | | | | | These variables are only used with an interface that just dumps their values into registers to be passed to the hypervisor. The arguments to that interface are declared to be "unsigned long", so make these variables match. The macros are only used with these variables, so make them match as well. This code is currently only built for 64bit powerpc, so the transformation is really a noop. If the interface was ever ported to 32 bit, it would almost certainly still use registers to pass the parameters and so "unsigned long" would still be appropriate. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: ehea NAPI interface cleanup fixStephen Rothwell2008-12-28
| | | | | | | | Commit 908a7a16b852ffd618a9127be8d62432182d81b4 ("net: Remove unused netdev arg from some NAPI interfaces") missed two spots. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* net: Remove unused netdev arg from some NAPI interfaces.Neil Horman2008-12-22
| | | | | | | | | | When the napi api was changed to separate its 1:1 binding to the net_device struct, the netif_rx_[prep|schedule|complete] api failed to remove the now vestigual net_device structure parameter. This patch cleans up that api by properly removing it.. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netdevice: safe convert to netdev_priv() #part-2Wang Chen2008-11-13
| | | | | | | | | | | | | | | | | | We have some reasons to kill netdev->priv: 1. netdev->priv is equal to netdev_priv(). 2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously netdev_priv() is more flexible than netdev->priv. But we cann't kill netdev->priv, because so many drivers reference to it directly. This patch is a safe convert for netdev->priv to netdev_priv(netdev). Since all of the netdev->priv is only for read. But it is too big to be sent in one mail. I split it to 4 parts and make every part smaller than 100,000 bytes, which is max size allowed by vger. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/net: Kill now superfluous ->last_rx stores.David S. Miller2008-11-04
| | | | | | | | | | | | | The generic packet receive code takes care of setting netdev->last_rx when necessary, for the sake of the bonding ARP monitor. Drivers need not do it any more. Some cases had to be skipped over because the drivers were making use of the ->last_rx value themselves. Signed-off-by: David S. Miller <davem@davemloft.net>
* net: convert print_mac to %pMJohannes Berg2008-10-27
| | | | | | | | | | | | This converts pretty much everything to print_mac. There were a few things that had conflicts which I have just dropped for now, no harm done. I've built an allyesconfig with this and looked at the files that weren't built very carefully, but it's a huge patch. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* ibmveth: fix bad UDP checksumsSantiago Leon2008-08-27
| | | | | | | | | | | | | | This patch fixes a ibmveth bug where bad UDP checksums are being transmitted when checksum offloading is enabled. The hypervisor does checksum offloading only on TCP packets, so ibmveth calls skb_checksum_help() for any other protocol. The bug happens because the packet is being modified after the DMA map, so we would need a memory barrier before making the hypervisor call. Reordering the code so that the DMA map happens after skb_checksum_help() has the additional advantage of fixing a DMA map leak if skb_checksum_help() where to fail. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* ibmveth: Fix multiple errors with dma_mapping_error conversionStephen Rothwell2008-07-28
| | | | | | | | | | | | | | | | | | | | | The addition of an argument to dma_mapping_error() in commit 8d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06 "dma-mapping: add the device argument to dma_mapping_error()" left a bit of fallout: drivers/net/ibmveth.c:263: error: too few arguments to function 'dma_mapping_error' drivers/net/ibmveth.c:264: error: expected ')' before 'goto' drivers/net/ibmveth.c:284: error: expected expression before '}' token drivers/net/ibmveth.c:297: error: too few arguments to function 'dma_mapping_error' drivers/net/ibmveth.c:298: error: expected ')' before 'dma_unmap_single' drivers/net/ibmveth.c:306: error: expected expression before '}' token drivers/net/ibmveth.c:491: error: too few arguments to function 'dma_mapping_error' drivers/net/ibmveth.c:927: error: too few arguments to function 'dma_mapping_error' drivers/net/ibmveth.c:927: error: expected ')' before '{' token drivers/net/ibmveth.c:974: error: expected expression before '}' token drivers/net/ibmveth.c:914: error: label 'out' used but not defined m Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* dma-mapping: add the device argument to dma_mapping_error()FUJITA Tomonori2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER architecture does: This enables us to cleanly fix the Calgary IOMMU issue that some devices are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423). I think that per-device dma_mapping_ops support would be also helpful for KVM people to support PCI passthrough but Andi thinks that this makes it difficult to support the PCI passthrough (see the above thread). So I CC'ed this to KVM camp. Comments are appreciated. A pointer to dma_mapping_ops to struct dev_archdata is added. If the pointer is non NULL, DMA operations in asm/dma-mapping.h use it. If it's NULL, the system-wide dma_ops pointer is used as before. If it's useful for KVM people, I plan to implement a mechanism to register a hook called when a new pci (or dma capable) device is created (it works with hot plugging). It enables IOMMUs to set up an appropriate dma_mapping_ops per device. The major obstacle is that dma_mapping_error doesn't take a pointer to the device unlike other DMA operations. So x86 can't have dma_mapping_ops per device. Note all the POWER IOMMUs use the same dma_mapping_error function so this is not a problem for POWER but x86 IOMMUs use different dma_mapping_error functions. The first patch adds the device argument to dma_mapping_error. The patch is trivial but large since it touches lots of drivers and dma-mapping.h in all the architecture. This patch: dma_mapping_error() doesn't take a pointer to the device unlike other DMA operations. So we can't have dma_mapping_ops per device. Note that POWER already has dma_mapping_ops per device but all the POWER IOMMUs use the same dma_mapping_error function. x86 IOMMUs use device argument. [akpm@linux-foundation.org: fix sge] [akpm@linux-foundation.org: fix svc_rdma] [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix bnx2x] [akpm@linux-foundation.org: fix s2io] [akpm@linux-foundation.org: fix pasemi_mac] [akpm@linux-foundation.org: fix sdhci] [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix sparc] [akpm@linux-foundation.org: fix ibmvscsi] Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ibmveth: enable driver for CMORobert Jennings2008-07-25
| | | | | | | | | | | | | | | | | | | | | | | Enable ibmveth for Cooperative Memory Overcommitment (CMO). For this driver it means calculating a desired amount of IO memory based on the current MTU and updating this value with the bus when MTU changes occur. Because DMA mappings can fail, we have added a bounce buffer for temporary cases where the driver can not map IO memory for the buffer pool. The following changes are made to enable the driver for CMO: * DMA mapping errors will not result in error messages if entitlement has been exceeded and resources were not available. * DMA mapping errors are handled gracefully, ibmveth_replenish_buffer_pool() is corrected to check the return from dma_map_single and fail gracefully. * The driver will have a get_desired_dma function defined to function in a CMO environment. * When the MTU is changed, the driver will update the device IO entitlement Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Santiago Leon <santil@us.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* ibmveth: Automatically enable larger rx buffer pools for larger mtuSantiago Leon2008-07-25
| | | | | | | | | | | Activates larger rx buffer pools when the MTU is changed to a larger value. This patch de-activates the large rx buffer pools when the MTU changes to a smaller value. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* netdev: use non-racy method for proc entries creationDenis V. Lunev2008-04-29
| | | | | | | | | | | | Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data be setup before gluing PDE to main tree. Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* net: Remove unnecessary inclusions of asm/semaphore.hMatthew Wilcox2008-04-18
| | | | | | | | | None of these files use any of the functionality promised by asm/semaphore.h. It's possible that they rely on it dragging in some unrelated header file, but I can't build all these files, so we'll have fix any build failures as they come up. Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
* Use single_open instead of manual manipulations.Pavel Emelyanov2008-03-26
| | | | | | | | | The code opening proc entry for each device makes the same thing, as the single_open does, so remove the unneeded code. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Kobject: convert drivers/* from kobject_unregister() to kobject_put()Greg Kroah-Hartman2008-01-24
| | | | | | | | | | | There is no need for kobject_unregister() anymore, thanks to Kay's kobject cleanup changes, so replace all instances of it with kobject_put(). Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Kobject: change drivers/net/ibmveth.c to use kobject_init_and_addGreg Kroah-Hartman2008-01-24
| | | | | | | | | | | Stop using kobject_register, as this way we can control the sending of the uevent properly, after everything is properly initialized. Cc: Dave Larson <larson1@us.ibm.com> Cc: Santiago Leon <santil@us.ibm.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* kobjects: fix up improper use of the kobject name fieldGreg Kroah-Hartman2007-10-12
| | | | | | | A number of different drivers incorrect access the kobject name field directly. This is not correct as the name might not be in the array. Use the proper accessor function instead.
* [netdrvr] Stop using legacy hooks ->self_test_count, ->get_stats_countJeff Garzik2007-10-10
| | | | | | | These have been superceded by the new ->get_sset_count() hook. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Introduce and use print_mac() and DECLARE_MAC_BUF()Joe Perches2007-10-10
| | | | | | | This is nicer than the MAC_FMT stuff. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ETHTOOL] Provide default behaviors for a few ethtool sub-ioctlsJeff Garzik2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | For the operations get-tx-csum get-sg get-tso get-ufo the default ethtool_op_xxx behavior is fine for all drivers, so we permit op==NULL to imply the default behavior. This provides a more uniform behavior across all drivers, eliminating ethtool(8) "ioctl not supported" errors on older drivers that had not been updated for the latest sub-ioctls. The ethtool_op_xxx() functions are left exported, in case anyone wishes to call them directly from a driver-private implementation -- a not-uncommon case. Should an ethtool_op_xxx() helper remain unused for a while, except by net/core/ethtool.c, we can un-export it at a later date. [ Resolved conflicts with set/get value ethtool patch... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] drivers/net: statistics cleanup #1 -- save memory and shrink codeJeff Garzik2007-10-10
| | | | | | | | | | | | | | | | | We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Nuke SET_MODULE_OWNER macro.Ralf Baechle2007-10-10
| | | | | | | | | | | | It's been a useless no-op for long enough in 2.6 so I figured it's time to remove it. The number of people that could object because they're maintaining unified 2.4 and 2.6 drivers is probably rather small. [ Handled drivers added by netdev tree and some missed IRDA cases... -DaveM ] Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* ibmveth: Remove use of bitfieldsBrian King2007-10-10
| | | | | | | | Removes the use of bitfields from the ibmveth driver. This results in slightly smaller object code. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ibmveth: Remove dead frag processing codeBrian King2007-10-10
| | | | | | | | | | Removes dead frag processing code from ibmveth. Since NETIF_F_SG was not set, this code was never executed. Also, since the ibmveth interface can only handle 6 fragments, core networking code would need to be modified in order to efficiently enable this support. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ibmveth: Add ethtool driver stats hooksBrian King2007-10-10
| | | | | | | Add ethtool hooks to ibmveth to retrieve driver statistics. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ibmveth: Add ethtool TSO handlersBrian King2007-10-10
| | | | | | | | Add handlers for get_tso and get_ufo to prevent errors being printed by ethtool. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ibmveth: Implement ethtool hooks to enable/disable checksum offloadBrian King2007-10-10
| | | | | | | | This patch adds the appropriate ethtool hooks to allow for enabling/disabling of hypervisor assisted checksum offload for TCP. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ibmveth: Enable TCP checksum offloadBrian King2007-10-10
| | | | | | | | | | | | | | This patchset enables TCP checksum offload support for IPV4 on ibmveth. This completely eliminates the generation and checking of the checksum for packets that are completely virtual and never touch a physical network. A simple TCP_STREAM netperf run on a virtual network with maximum mtu set yielded a ~30% increase in throughput. This feature is enabled by default on systems that support it, but can be disabled with a module option. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make /proc/net per network namespaceEric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | | This patch makes /proc/net per network namespace. It modifies the global variables proc_net and proc_net_stat to be per network namespace. The proc_net file helpers are modified to take a network namespace argument, and all of their callers are fixed to pass &init_net for that argument. This ensures that all of the /proc/net files are only visible and usable in the initial network namespace until the code behind them has been updated to be handle multiple network namespaces. Making /proc/net per namespace is necessary as at least some files in /proc/net depend upon the set of network devices which is per network namespace, and even more files in /proc/net have contents that are relevant to a single network namespace. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make NAPI polling independent of struct net_device objects.Stephen Hemminger2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several devices have multiple independant RX queues per net device, and some have a single interrupt doorbell for several queues. In either case, it's easier to support layouts like that if the structure representing the poll is independant from the net device itself. The signature of the ->poll() call back goes from: int foo_poll(struct net_device *dev, int *budget) to int foo_poll(struct napi_struct *napi, int budget) The caller is returned the number of RX packets processed (or the number of "NAPI credits" consumed if you want to get abstract). The callee no longer messes around bumping dev->quota, *budget, etc. because that is all handled in the caller upon return. The napi_struct is to be embedded in the device driver private data structures. Furthermore, it is the driver's responsibility to disable all NAPI instances in it's ->stop() device close handler. Since the napi_struct is privatized into the driver's private data structures, only the driver knows how to get at all of the napi_struct instances it may have per-device. With lots of help and suggestions from Rusty Russell, Roland Dreier, Michael Chan, Jeff Garzik, and Jamal Hadi Salim. Bug fixes from Thomas Graf, Roland Dreier, Peter Zijlstra, Joseph Fannin, Scott Wood, Hans J. Koch, and Michael Chan. [ Ported to current tree and all drivers converted. Integrated Stephen's follow-on kerneldoc additions, and restored poll_list handling to the old style to fix mutual exclusion issues. -DaveM ] Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/net/ibmveth.c: memset fixMariusz Kozlowski2007-08-07
| | | | | | | | | | | | | | | | | > >> Looks like memset() is zeroing wrong nr of bytes. > > > > Good catch, however, I think we can just remove this memset altogether > > since the memory gets allocated via kzalloc. > > Correct, that memset() is superfluous. Ok. Then this should do it. Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> drivers/net/ibmveth.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ibmveth: Fix rx pool deactivate oopsBrian King2007-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes the following oops which can occur when trying to deallocate receive buffer pools using sysfs with the ibmveth driver. NIP: d00000000024f954 LR: d00000000024fa58 CTR: c0000000000d7478 REGS: c00000000ffef9f0 TRAP: 0300 Not tainted (2.6.22-ppc64) MSR: 8000000000009032 <EE,ME,IR,DR> CR: 24242442 XER: 00000010 DAR: 00000000000007f0, DSISR: 0000000042000000 TASK = c000000002f91360[2967] 'bash' THREAD: c00000001398c000 CPU: 2 GPR00: 0000000000000000 c00000000ffefc70 d000000000262d30 c00000001c4087a0 GPR04: 00000003000000fe 0000000000000000 000000000000000f c000000000579d80 GPR08: 0000000000365688 c00000001c408998 00000000000007f0 0000000000000000 GPR12: d000000000251e88 c000000000579d80 00000000200957ec 0000000000000000 GPR16: 00000000100b8808 00000000100feb30 0000000000000000 0000000010084828 GPR20: 0000000000000000 000000001014d4d0 0000000000000010 c00000000ffefeb0 GPR24: c00000001c408000 0000000000000000 c00000001c408000 00000000ffffb054 GPR28: 00000000000000fe 0000000000000003 d000000000262700 c00000001c4087a0 NIP [d00000000024f954] .ibmveth_remove_buffer_from_pool+0x38/0x108 [ibmveth] LR [d00000000024fa58] .ibmveth_rxq_harvest_buffer+0x34/0x78 [ibmveth] Call Trace: [c00000000ffefc70] [c0000000000280a8] .dma_iommu_unmap_single+0x14/0x28 (unreliable) [c00000000ffefd00] [d00000000024fa58] .ibmveth_rxq_harvest_buffer+0x34/0x78 [ibmveth] [c00000000ffefd80] [d000000000250e40] .ibmveth_poll+0xd8/0x434 [ibmveth] [c00000000ffefe40] [c00000000032da8c] .net_rx_action+0xdc/0x248 [c00000000ffefef0] [c000000000068b4c] .__do_softirq+0xa8/0x164 [c00000000ffeff90] [c00000000002789c] .call_do_softirq+0x14/0x24 [c00000001398f6f0] [c00000000000c04c] .do_softirq+0x68/0xac [c00000001398f780] [c000000000068ca0] .irq_exit+0x54/0x6c [c00000001398f800] [c00000000000c8e4] .do_IRQ+0x170/0x1ac [c00000001398f890] [c000000000004790] hardware_interrupt_entry+0x18/0x1c Exception: 501 at .plpar_hcall_norets+0x24/0x94 LR = .veth_pool_store+0x15c/0x298 [ibmveth] [c00000001398fb80] [d000000000250b2c] .veth_pool_store+0x5c/0x298 [ibmveth] (unreliable) [c00000001398fc30] [c000000000145530] .sysfs_write_file+0x140/0x1d8 [c00000001398fcf0] [c0000000000de89c] .vfs_write+0x120/0x208 [c00000001398fd90] [c0000000000df2c8] .sys_write+0x4c/0x8c [c00000001398fe30] [c0000000000086ac] syscall_exit+0x0/0x40 Instruction dump: fba1ffe8 fbe1fff8 789d0022 f8010010 f821ff71 789c0020 1d3d00a8 7b8a1f24 38000000 7c7f1b78 7d291a14 e9690128 <7c0a592a> e8030000 e9690120 80a90100 Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* sysfs: kill unnecessary attribute->ownerTejun Heo2007-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | sysfs is now completely out of driver/module lifetime game. After deletion, a sysfs node doesn't access anything outside sysfs proper, so there's no reason to hold onto the attribute owners. Note that often the wrong modules were accounted for as owners leading to accessing removed modules. This patch kills now unnecessary attribute->owner. Note that with this change, userland holding a sysfs node does not prevent the backing module from being unloaded. For more info regarding lifetime rule cleanup, please read the following message. http://article.gmane.org/gmane.linux.kernel/510293 (tweaked by Greg to not delete the field just yet, to make it easier to merge things properly.) Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* ibmveth: Automatically enable larger rx buffer pools for larger mtuBrian King2007-06-09
| | | | | | | | | | | | Currently, ibmveth maintains several rx buffer pools, which can be modified through sysfs. By default, pools are not allocated by default such that jumbo frames cannot be supported without first activating larger rx buffer pools. This results in failures when attempting to change the mtu. This patch makes ibmveth automatically allocate these larger buffer pools when the mtu is changed. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ibmveth: Fix h_free_logical_lan error on pool resizeBrian King2007-06-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When attempting to activate additional rx buffer pools on an ibmveth interface that was not yet up, the error below was seen. The patch fixes this by only closing and opening the interface to activate the resize if the interface is already opened. (drivers/net/ibmveth.c:597 ua:30000004) ERROR: h_free_logical_lan failed with fffffffffffffffc, continuing with close Unable to handle kernel paging request for data at address 0x00000ff8 Faulting instruction address: 0xd0000000002540e0 Oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=128 NUMA PSERIES LPAR Modules linked in: ip6t_REJECT xt_tcpudp ipt_REJECT xt_state iptable_mangle ipta ble_nat ip_nat iptable_filter ip6table_mangle ip_conntrack nfnetlink ip_tables i p6table_filter ip6_tables x_tables ipv6 apparmor aamatch_pcre loop dm_mod ibmvet h sg ibmvscsic sd_mod scsi_mod NIP: D0000000002540E0 LR: D0000000002540D4 CTR: 80000000001AF404 REGS: c00000001cd27870 TRAP: 0300 Not tainted (2.6.16.46-0.4-ppc64) MSR: 8000000000009032 <EE,ME,IR,DR> CR: 24242422 XER: 00000007 DAR: 0000000000000FF8, DSISR: 0000000040000000 TASK = c00000001ca7b4e0[1636] 'sh' THREAD: c00000001cd24000 CPU: 0 GPR00: D0000000002540D4 C00000001CD27AF0 D000000000265650 C00000001C936500 GPR04: 8000000000009032 FFFFFFFFFFFFFFFF 0000000000000007 000000000002C2EF GPR08: FFFFFFFFFFFFFFFF 0000000000000000 C000000000652A10 C000000000652AE0 GPR12: 0000000000004000 C0000000004A3300 00000000100A0000 0000000000000000 GPR16: 00000000100B8808 00000000100C0F60 0000000000000000 0000000010084878 GPR20: 0000000000000000 00000000100C0CB0 00000000100AF498 0000000000000002 GPR24: 00000000100BA488 C00000001C936760 D000000000258DD0 C00000001C936000 GPR28: 0000000000000000 C00000001C936500 D000000000265180 C00000001C936000 NIP [D0000000002540E0] .ibmveth_close+0xc8/0xf4 [ibmveth] LR [D0000000002540D4] .ibmveth_close+0xbc/0xf4 [ibmveth] Call Trace: [C00000001CD27AF0] [D0000000002540D4] .ibmveth_close+0xbc/0xf4 [ibmveth] (unreliable) [C00000001CD27B80] [D0000000002545FC] .veth_pool_store+0xd0/0x260 [ibmveth] [C00000001CD27C40] [C00000000012E0E8] .sysfs_write_file+0x118/0x198 [C00000001CD27CF0] [C0000000000CDAF0] .vfs_write+0x130/0x218 [C00000001CD27D90] [C0000000000CE52C] .sys_write+0x4c/0x8c [C00000001CD27E30] [C00000000000871C] syscall_exit+0x0/0x40 Instruction dump: 419affd8 2fa30000 419e0020 e93d0000 e89e8040 38a00255 e87e81b0 80c90018 48001531 e8410028 e93d00e0 7fa3eb78 <e8090ff8> f81d0430 4bfffdc9 38210090 Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Fix sparse errors in drivers/net/ibmveth.cMichael Ellerman2007-04-28
| | | | | | | | | | | | | | | | drivers/net/ibmveth.c:96:46: error: marked inline, but without a definition drivers/net/ibmveth.c:96: warning: 'ibmveth_rxq_harvest_buffer' declared inline after being called drivers/net/ibmveth.c:96: warning: previous declaration of 'ibmveth_rxq_harvest_buffer' was here Just let the compiler decide, as it happens gcc 4.~ inlines it anyway. drivers/net/ibmveth.c:957:71: warning: Using plain integer as NULL pointer drivers/net/ibmveth.c:964:85: warning: Using plain integer as NULL pointer Split the long lines as well, ugly, but < 80 columns. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [ETH]: Make eth_type_trans set skb->dev like the other *_type_transArnaldo Carvalho de Melo2007-04-26
| | | | | | | One less thing for drivers writers to worry about. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] mark struct file_operations const 5Arjan van de Ven2007-02-12
| | | | | | | | | | | Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] ibmveth: Remove ibmveth "liobn" fieldBenjamin Herrenschmidt2006-12-04
| | | | | | | | | Remove the now unused "liobn" field in ibmveth which also avoids having insider knowledge of the iommu table in that driver. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] ibmveth: Fix index increment calculationDavid Gibson2006-10-21
| | | | | | | | | | | | | | | | | | The recent commit 751ae21c6cd1493e3d0a4935b08fb298b9d89773 introduced a bug in the producer/consumer index calculation in the ibmveth driver - incautious use of the post-increment ++ operator resulted in an increment being immediately reverted. This patch corrects the logic. Without this patch, the driver oopses almost immediately after activation on at least some machines. Signed-off-by: David Gibson <dwg@au1.ibm.com> Acked-by: Santiago Leon <santil@us.ibm.com> Cc: Jeff Garzik <jeff@garzik.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ibmveth irq fixAndrew Morton2006-10-11
| | | | | | | | | | drivers/net/ibmveth.c:939: error: too many arguments to function `ibmveth_interrupt' Cc: Jeff Garzik <jeff@garzik.org> Cc: Anton Blanchard <anton@samba.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Merge branch 'master' into upstream-fixesJeff Garzik2006-10-11
|\
| * IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
* | [PATCH] ibmveth: fix int rollover panicSantiago Leon2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a nasty bug that has been sitting there since the very first versions of the driver, but is generating a panic because we changed the number of 2K buffers for 2.6.16. The consumer_index and producer_index are u32's that get incremented on every buffer emptied and replenished respectively. We use the {producer,consumer}_index mod'ed with the size of the pool to pick out an entry in the free_map. The problem happens when the u32 rolls over and the number of the buffers in the pool is not a perfect divisor of 2^32. i.e. if the number of 2K buffers is 0x300, before the consumer_index rolls over, our index to the free map = 0xffffffff mod 0x300 = 0xff. The next time a buffer is emptied, we want the index to the free map to be 0x100, but 0x0 mod 0x300 is 0x0. This patch assigns the mod'ed result back to the consumer and producer indexes so that they never roll over. The second chunk of the patch covers the unlikely case where the consumer_index has just been reset to 0x0 and the hypervisor is not able to accept that buffer. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [PATCH] ibmveth: rename proc entry nameSantiago Leon2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the name of the proc file for each ibmveth adapter from the network device name to the slot number in the virtual bus. The proc file is created when the device is probed, so a change in the name of the device will not be reflected in the name of the proc file giving problems when identifying and removing the adapter. The slot number is a property that does not change through the life of the adapter so we use that instead. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [PATCH] ibmveth: kdump interrupt fixSantiago Leon2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a race that panics the kernel when opening the device after a kdump. Without this patch there is a window where the hypervisor can send an interrupt before all the structures for the kdump ibmveth module are ready (because the hypervisor is not aware that the partition crashed and that the virtual driver is reloading). We close this window by disabling the interrupts before registering the adapter to the hypervisor. This patch depends on the "ibmveth: Harden driver initilisation" patch. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [PATCH] ibmveth: Add netpoll functionSantiago Leon2006-10-05
| | | | | | | | | | | | | | | | This patch adds the net poll controller function to ibmveth to support netconsole and netdump. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [PATCH] ibmveth: Harden driver initilisationMichael Ellerman2006-10-05
|/ | | | | | | | | | | | | | | | | | This patch has been floating around for a while now, Santi originally sent it in March: http://www.spinics.net/lists/netdev/msg00471.html After a kexec the ibmveth driver will fail when trying to register with the Hypervisor because the previous kernel has not unregistered. So if the registration fails, we unregister and then try again. We don't unconditionally unregister, because we don't want to disturb the regular code path for 99% of users. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Anton Blanchard <anton@samba.org> Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Merge branch 'master' into upstreamJeff Garzik2006-09-22
|\ | | | | | | | | | | | | Conflicts: net/ieee80211/ieee80211_crypt_tkip.c net/ieee80211/ieee80211_crypt_wep.c
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