aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/s390
Commit message (Collapse)AuthorAge
* [S390] cio: improve unit check handling for internal operationsPeter Oberparleiter2006-10-04
| | | | | | | Retry internal operation after unit check instead of aborting them. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: add timeout handler for internal operations.Peter Oberparleiter2006-10-04
| | | | | | | Add timeout handler for common-I/O-layer-internal I/O operations. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] zcrypt device registration/unregistration race.Ralph Wuerthner2006-10-04
| | | | | | | Fix a race condition during AP device registration and unregistration. Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Add timeouts during sense PGID, path verification and disband PGID.Cornelia Huck2006-10-04
| | | | | | | | While the machine owns us an interrupt in these cases (and we should get one), reality isn't always like that... Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [PATCH] replace cad_pid by a struct pidCedric Le Goater2006-10-02
| | | | | | | | | | | | | | | | | | | | | | | | | There are a few places in the kernel where the init task is signaled. The ctrl+alt+del sequence is one them. It kills a task, usually init, using a cached pid (cad_pid). This patch replaces the pid_t by a struct pid to avoid pid wrap around problem. The struct pid is initialized at boot time in init() and can be modified through systctl with /proc/sys/kernel/cad_pid [ I haven't found any distro using it ? ] It also introduces a small helper routine kill_cad_pid() which is used where it seemed ok to use cad_pid instead of pid 1. [akpm@osdl.org: cleanups, build fix] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: update fs3270 to use a struct pidCedric Le Goater2006-10-02
| | | | | | | | | | | Replaces the pid_t value with a struct pid to avoid pid wrap around problems. Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Acked-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] const struct tty_operationsJeff Dike2006-10-02
| | | | | | | | | | | | | | | | | | | | | | | As part of an SMP cleanliness pass over UML, I consted a bunch of structures in order to not have to document their locking. One of these structures was a struct tty_operations. In order to const it in UML without introducing compiler complaints, the declaration of tty_set_operations needs to be changed, and then all of its callers need to be fixed. This patch declares all struct tty_operations in the tree as const. In all cases, they are static and used only as input to tty_set_operations. As an extra check, I ran an i386 allyesconfig build which produced no extra warnings. 53 drivers are affected. I checked the history of a bunch of them, and in most cases, there have been only a handful of maintenance changes in the last six months. serial_core.c was the busiest one that I looked at. Signed-off-by: Jeff Dike <jdike@addtoit.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] completions: lockdep annotate on stack completionsPeter Zijlstra2006-10-01
| | | | | | | | | | | All on stack DECLARE_COMPLETIONs should be replaced by: DECLARE_COMPLETION_ONSTACK Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] BLOCK: Make it possible to disable the block layer [try #6]David Howells2006-09-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make it possible to disable the block layer. Not all embedded devices require it, some can make do with just JFFS2, NFS, ramfs, etc - none of which require the block layer to be present. This patch does the following: (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev support. (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls an item that uses the block layer. This includes: (*) Block I/O tracing. (*) Disk partition code. (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS. (*) The SCSI layer. As far as I can tell, even SCSI chardevs use the block layer to do scheduling. Some drivers that use SCSI facilities - such as USB storage - end up disabled indirectly from this. (*) Various block-based device drivers, such as IDE and the old CDROM drivers. (*) MTD blockdev handling and FTL. (*) JFFS - which uses set_bdev_super(), something it could avoid doing by taking a leaf out of JFFS2's book. (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and linux/elevator.h contingent on CONFIG_BLOCK being set. sector_div() is, however, still used in places, and so is still available. (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and parts of linux/fs.h. (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK. (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK. (*) set_page_dirty() doesn't call __set_page_dirty_buffers() if CONFIG_BLOCK is not enabled. (*) fs/no-block.c is created to hold out-of-line stubs and things that are required when CONFIG_BLOCK is not set: (*) Default blockdev file operations (to give error ENODEV on opening). (*) Makes some /proc changes: (*) /proc/devices does not list any blockdevs. (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK. (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK. (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if given command other than Q_SYNC or if a special device is specified. (*) In init/do_mounts.c, no reference is made to the blockdev routines if CONFIG_BLOCK is not defined. This does not prohibit NFS roots or JFFS2. (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return error ENOSYS by way of cond_syscall if so). (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if CONFIG_BLOCK is not set, since they can't then happen. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* [PATCH] Split struct request ->flags into two partsJens Axboe2006-09-30
| | | | | | | | | | Right now ->flags is a bit of a mess: some are request types, and others are just modifiers. Clean this up by splitting it into ->cmd_type and ->cmd_flags. This allows introduction of generic Linux block message types, useful for sending generic Linux commands to block devices. Signed-off-by: Jens Axboe <axboe@suse.de>
* [IPV4]: inet_addr_type() annotationsAl Viro2006-09-28
| | | | | | | argument and inferred net-endian variables in callers annotated. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [S390] Inline assembly cleanup.Martin Schwidefsky2006-09-28
| | | | | | | | | | | | Major cleanup of all s390 inline assemblies. They now have a common coding style. Quite a few have been shortened, mainly by using register asm variables. Use of the EX_TABLE macro helps as well. The atomic ops, bit ops and locking inlines new use the Q-constraint if a newer gcc is used. That results in slightly better code. Thanks to Christian Borntraeger for proof reading the changes. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] init_timer in tty3270.Jan Glauber2006-09-28
| | | | | | | Call init_timer only once fpr tp->timer in tty3270. Signed-off-by: Jan Glauber <jan.glauber@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] remove unnecessary includes.Christian Borntraeger2006-09-28
| | | | | Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [SCSI] zfcp: fix: avoid removal of fsf reqs before qdio queues are downAndreas Herrmann2006-09-23
| | | | | | | | | | Fix the fix ... One of my previous fixes introduced removal of all fsf requests in zfcp's eh_host_reset_handler. But this must not happen before qdio queues are shut down. So, I revert the changes of zfcp_scsi_eh_host_reset_handler. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: introduce struct timer_list in struct zfcp_fsf_reqAndreas Herrmann2006-09-23
| | | | | | | | This instance will be used whenever a timer is needed for a request by zfcp. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: fix: use correct req_id in eh_abort_handlerAndreas Herrmann2006-09-23
| | | | | | | | | | | zfcp's eh_abort_handler used the wrong request ID to identify the request to be aborted. The bug was introduced with commit fea9d6c7bcd8ff1d60ff74f27ba483b3820b18a3 for improved management of request IDs. The bug is fixed with this patch. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: create private slab caches to guarantee proper data alignmentHeiko Carstens2006-09-23
| | | | | | | | | | | | | | | | Create private slab caches in order to guarantee proper alignment of data structures that get passed to hardware. Sidenote: with this patch slab cache debugging will finally work on s390 (at least no known problems left). Furthermore this patch does some minor cleanups: - store ptr for transport template in struct zfcp_data Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Compile fix ups and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: remove zfcp_ccw_unregister functionHeiko Carstens2006-09-23
| | | | | | | | | Remove unused zfcp_ccw_unregister function (leftover from zfcp's module_exit era). Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [S390] cio: subchannel evaluation function operates without lockPeter Oberparleiter2006-09-20
| | | | | | | | | css_evaluate_subchannel() operates subchannel without lock which can lead to erratic behavior caused by concurrent device access. Also split evaluation function to make it more readable. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: always query all paths on path verification.Peter Oberparleiter2006-09-20
| | | | | | | | | | | | Reappearing channel paths are sometimes not utilized by CCW devices because path verification incorrectly relies on path-operational-mask information which is not updated until a channel path has been used again. Modify path verification procedure to always query all available paths to a device. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: update path groups on logical CHPID changes.Peter Oberparleiter2006-09-20
| | | | | | | | | | | | CHPIDs that are logically varied off will not be removed from a CCW device's path group because resign-from-pathgroup command is issued with invalid path mask of 0 because internal CCW operations are masked by the logical path mask after the relevant bits are cleared by the vary operation. Do not apply logical path mask to internal operations. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: subchannels in no-path state.Peter Oberparleiter2006-09-20
| | | | | | | | | | | Subchannel may incorrectly remain in state no-path after channel paths have reappeared. Currently the scan for subchannels which are using a channel path ends at the first occurrence if a full link address was provided by the channel subsystem. The scan needs to continue over all subchannels. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Replace nopav-message on VM.Peter Oberparleiter2006-09-20
| | | | | | | | | Specifying kernel parameter "dasd=nopav" on systems running under VM has no function but results in message "disable PAV mode". Correct message is "'nopav' not supported on VM". Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] set modalias for ccw bus uevents.Peter Oberparleiter2006-09-20
| | | | | | | Add the MODALIAS environment variable for ccw bus uevents. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Get rid of DBG macro.Cornelia Huck2006-09-20
| | | | | Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Linux API for writing z/VM APPLDATA Monitor records.Melissa Howland2006-09-20
| | | | | | | | | | This patch delivers a new Linux API in the form of a misc char device that is useable from user space and allows write access to the z/VM APPLDATA Monitor Records collected by the *MONITOR System Service of z/VM. Signed-off-by: Melissa Howland <melissah@us.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] xpram off by one error.Christian Borntraeger2006-09-20
| | | | | | | The xpram driver shows and uses 4096 bytes less than available. Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] fix typo in vmcp.Christian Borntraeger2006-09-20
| | | | | | | Fix comment typo in vmcp, it is z/VM and not v/VM. Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] qdio slsb processing state.Frank Pavlic2006-09-20
| | | | | | | | The last SLSB has to be set to STATE_PROCESSING if we really want to use the PROCESSING feature. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Missing initialization in common i/o layer.Heiko Carstens2006-09-20
| | | | | | | | | | | | Previous patch that was intended to reduce stack usage within common i/o layer didn't consider implicit memset(..., 0, ...) used with the initializations used before. Add these missing memsets wherever it's not obvious that the concerned memory region is zeroed. This should give the same semantics as before. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] convert some assembler to C.Heiko Carstens2006-09-20
| | | | | | | Convert GET_IPL_DEVICE assembler macro to C function. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] __exit cleanup.Heiko Carstens2006-09-20
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cleanup sysinfo and add system z9 specific extensions.Martin Schwidefsky2006-09-20
| | | | | | | | | With System z9 additional fields have been added to the output of the store system information instruction. This patch adds the new model information field and the alternate cpu capability fields to the output of /proc/sysinfo. While we at it clean up the code as well. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] dasd default debug level.Horst Hummel2006-09-20
| | | | | | | | Enhanced default DBF level to get most important messages in debug feature files. Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] dasd deadlock after state change pending interrupt.Martin Schwidefsky2006-09-20
| | | | | | | | | | | | | | | The dasd_device_from_cdev function is called from interrupt context to get the struct dasd_device associated with a ccw device. The driver_data of the ccw device points to the dasd_devmap structure which contains the pointer to the dasd_device structure. The lock that protects the dasd_devmap structure is acquire with out irqsave. To prevent the deadlock in dasd_device_from_cdev if it is called from interrupt context the dependency to the dasd_devmap structure needs to be removed. Let the driver_data of the ccw device point to the dasd_device structure directly and use the ccw device lock to protect the access. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] qdio_get_micros return value.Frank Pavlic2006-09-20
| | | | | | | | qdio_get_micros is supposed to return microseconds. The get_clock() return value needs to be shifted by 12 to get to microseconds. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] empty function defines.Heiko Carstens2006-09-20
| | | | | | | | Use do { } while (0) constructs instead of empty defines to avoid subtle compile bugs. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] ipl/dump on panic.Michael Holzheu2006-09-20
| | | | | | | | | | | | It is now possible to specify a ccw/fcp dump device which is used to automatically create a system dump in case of a kernel panic. The dump device can be configured under /sys/firmware/dump. In addition it is now possible to specify a ccw/fcp device which is used for the next reboot of Linux. The reipl device can be configured under /sys/firmware/reipl. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] zcrypt secure key cryptography extension.Ralph Wuerthner2006-09-20
| | | | | | | | | Allow the user space to send extended cprb messages directly to the PCIXCC / CEX2C cards. This allows the CCA library to construct special crypto requests that use "secure" keys that are stored on the card. Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] zcrypt driver Makefile, Kconfig and monolithic build.Martin Schwidefsky2006-09-20
| | | | | | | | | The Makefile and Kconfig changes should be obvious. The monolithic build option is there to create an old-style z90crypt module for backward compatability to older distributions. Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] zcrypt PCICC, PCIXCC coprocessor card ap bus drivers.Martin Schwidefsky2006-09-20
| | | | | Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] zcrypt CEX2A, CEX2C, PCICA accelerator card ap bus drivers.Martin Schwidefsky2006-09-20
| | | | | Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] zcrypt user space interface.Martin Schwidefsky2006-09-20
| | | | | | | | | | | | | | | | | | | | | | The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] zcrypt adjunct processor bus.Martin Schwidefsky2006-09-20
| | | | | | | | | | | | | | | | | | | | | | | | | | Add a bus for the adjunct processor interface. Up to 64 devices can be connect to the ap bus interface, each device with 16 domains. That makes 1024 message queues. The interface is asynchronous, the answer to a message sent to a queue needs to be received at some later point in time. Unfortunately the interface does not provide interrupts when a message reply is pending. So the ap bus needs to implement some fancy polling, each active queue is polled once per 1/HZ second or continuously if an idle cpus exsists and the poll thread is activ (see poll_thread parameter). The ap bus uses the sysfs path /sys/bus/ap and has two bus attributes, ap_domain and config_time. The ap_domain selects one of the 16 domains to be used for this system. This limits the maximum number of ap devices to 64. The config_time attribute contains the number of seconds between two ap bus scans to find new devices. The ap bus uses the modalias entries of the form "ap:tN" to autoload the ap driver for hardware type N. Currently known types are: 3 - PCICC, 4 - PCICA, 5 - PCIXCC, 6 - CEX2A and 7 - CEX2C. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] remove old z90crypt driver.Martin Schwidefsky2006-09-20
| | | | | | | The z90crypt driver has served its term. It is replaced by the shiny new zcrypt device driver. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [PATCH] s390: qeth driver fixes [6/6]Frank Pavlic2006-09-17
| | | | | | | | | | | | [PATCH 9/9] s390: qeth driver fixes [6/6] From: Frank Pavlic <fpavlic@de.ibm.com> - Hipersockets has no IPV6 support, thus prevent issueing SETRTG_IPV6 control commands on Hipersockets devices. - fixed error handling in qeth_sysfs_(un)register Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] s390: qeth driver fixes [5/6]Frank Pavlic2006-09-17
| | | | | | | | | | | | [PATCH 8/9] s390: qeth driver fixes [5/6] From: Frank Pavlic <fpavlic@de.ibm.com> fix kernel panic in qdio queue handling. qeth_qdio_clear_card() could be invoked by 2 CPUs simultaneously (for example reboot event and recovery). Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] s390: qeth driver fixes [4/6]Frank Pavlic2006-09-17
| | | | | | | | | | | | | | | [PATCH 7/9] s390: qeth driver fixes [4/6] From: Frank Pavlic <fpavlic@de.ibm.com> - fix kernel crash due to race, set card->state to SOFTSETUP after card and card->dev are initialized properly. - remove CONFIG_QETH_PERF_STATS, use sysfs attribute instead, as we want to have the ability to turn on/off the statistics at runtime. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] s390: qeth driver fixes [3/6]Frank Pavlic2006-09-17
| | | | | | | | | | | | | | | | | | | | | | | [PATCH 6/9] s390: qeth driver fixes [3/6] From: Frank Pavlic <fpavlic@de.ibm.com> fixed kernel panic caused by qeth driver: Using a bonding device qeth driver will realloc headroom for every skb coming from the bond device. Once this happens qeth frees the original skb and set the skb pointer to the new realloced skb. Under heavy transmit workload (e.g.UDP streams) through bond network device the qdio output queue might get full. In this case we return with EBUSY from qeth_send_packet. Returning to qeth_hard_start_xmit routine the skb address on the stack still points to the old address, which has been freed before. Returning from qeth_hard_start_xmit with EBUSY results in requeuing the skb. In this case it corrupts the qdisc queue and results in kernel panic. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-14 14:04:59 -0500