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2007-05-09Fix occurrences of "the the "Michael Opdenacker
Signed-off-by: Michael Opdenacker <michael@free-electrons.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-05-08Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (58 commits) [SCSI] zfcp: clear boxed flag on unit reopen. [SCSI] zfcp: clear adapter failed flag if an fsf request times out. [SCSI] zfcp: rework request ID management. [SCSI] zfcp: Fix deadlock between zfcp ERP and SCSI [SCSI] zfcp: Locking for req_no and req_seq_no [SCSI] zfcp: print S_ID and D_ID with 3 bytes [SCSI] ipr: Use PCI-E reset API for new ipr adapter [SCSI] qla2xxx: Update version number to 8.01.07-k7. [SCSI] qla2xxx: Add MSI support. [SCSI] qla2xxx: Correct pci_set_msi() usage semantics. [SCSI] qla2xxx: Attempt to stop firmware only if it had been previously executed. [SCSI] qla2xxx: Honor NVRAM port-down-retry-count settings. [SCSI] qla2xxx: Error-out during probe() if we're unable to complete HBA initialization. [SCSI] zfcp: Stop system after memory corruption [SCSI] mesh: cleanup variable usage in interrupt handler [SCSI] megaraid: replace yield() with cond_resched() [SCSI] megaraid: fix warnings when CONFIG_PROC_FS=n [SCSI] aacraid: correct SUN products to README [SCSI] aacraid: superfluous adapter reset for IBM 8 series ServeRAID controllers [SCSI] aacraid: kexec fix (reset interrupt handler) ...
2007-05-08[SCSI] zfcp: clear boxed flag on unit reopen.Heiko Carstens
The boxed flag for units was never cleared. This doesn't hurt, but on ACL updates the error recovery could reopen more units than needed. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-08[SCSI] zfcp: clear adapter failed flag if an fsf request times out.Heiko Carstens
Must clear adapter failed flag if an fsf request times out. This is necessary because on link down situations the failed flags gets set but the QDIO queues are still up. Since an adapter reopen will be skipped if the failed flag is set an adapter_reopen that is issued on fsf request timeout has no effect if the local link is down. Might lead to locked up system if the SCSI stack is waiting for abort completion. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-08[SCSI] zfcp: rework request ID management.Heiko Carstens
Simplify request ID management and make sure that frequently used functions are inlined. Also fix a memory leak in zfcp_adapter_enqueue() which only gets hit in error handling. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-08[SCSI] zfcp: Fix deadlock between zfcp ERP and SCSIChristof Schmitt
The SCSI stack requires low level drivers to register and unregister devices. For zfcp this leads to the situation where zfcp calls the SCSI stack, the SCSI tries to scan the new device and the scan SCSI command fails. This would require the zfcp erp, but the erp thread is already blocked in the register call. The fix is to make sure that the calls from the ERP thread to the SCSI stack do not block the ERP thread. In detail: 1) Use a workqueue to avoid blocking of the scsi_scan_target calls. 2) When removing a unit make sure that no scsi_scan_target call is pending. 3) Replace scsi_flush_work with scsi_target_unblock. This avoids blocking and has the same result. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-08[SCSI] zfcp: Locking for req_no and req_seq_noChristof Schmitt
There is a possible race condition while generating the unique request ids and sequence numbers. Both might be read at the same time and have the same value. Fix this by serializing the access through the queue lock of the adapter: First call zfcp_fsf_req_sbal_get that acquires the lock, then read and increment the unique ids. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-08[SCSI] zfcp: print S_ID and D_ID with 3 bytesChristof Schmitt
S_ID and D_ID are defined in the FCP spec as 3 byte fields. Change the output in zfcp print statements accordingly to print them with only 3 bytes. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-08[SCSI] zfcp: Stop system after memory corruptionChristof Schmitt
For each request that is sent to the FCP adapter, zfcp allocates memory. Status information and data that is being read from the device is written to this memory by the hardware. After that, the hardware signals this via the response queue and zfcp continues processing. Now, if zfcp detects that there is a signal for an incoming response from the hardware, but there is no outstanding request for that request id, then some memory that can be in use anywhere in the system has just been overwritten. This should never happen, but if it does, stop the system with a panic. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-08s390: qeth driver hardware specs adaptionsPeter Tiedemann
s390: qeth driver hardware specs adaptions - according to the latest OSA hardware specification incorporate actual IPA command and return codes into qeth. - whitespaces removed from qeth_mpc.h Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com> Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-05-08s390: fix Oops when unloading module netiucvUrsula Braun
don't remove an entry from iucv_connection_list in netiucv_exit(). netiucv_free_netdevice is called anyway, which takes care of entry removal. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-05-08s390: free skbs in finite amount of time in qethUrsula Braun
Free sent skbs in some finite amount of time. Affected are asynchronous queue of Hipersockets devices and the output queues of all eth-devices respectively. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-05-08s390: qeth driver connection hangUrsula Braun
Frank Pavlic <fpavlic@de.ibm.com> Connection hangs when using EDDP mode because sk_protocol is NULL when skb has been copied via skb_copy. This results in dropping packets. Also keep MAC address after recovery of Virtual NICs so that traffic can flow again and duplicate statements in qeth_dev_set_route_store removed. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-05-05Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (87 commits) [SCSI] fusion: fix domain validation loops [SCSI] qla2xxx: fix regression on sparc64 [SCSI] modalias for scsi devices [SCSI] sg: cap reserved_size values at max_sectors [SCSI] BusLogic: stop using check_region [SCSI] tgt: fix rdma transfer bugs [SCSI] aacraid: fix aacraid not finding device [SCSI] aacraid: Correct SMC products in aacraid.txt [SCSI] scsi_error.c: Add EH Start Unit retry [SCSI] aacraid: [Fastboot] Panics for AACRAID driver during 'insmod' for kexec test. [SCSI] ipr: Driver version to 2.3.2 [SCSI] ipr: Faster sg list fetch [SCSI] ipr: Return better qc_issue errors [SCSI] ipr: Disrupt device error [SCSI] ipr: Improve async error logging level control [SCSI] ipr: PCI unblock config access fix [SCSI] ipr: Fix for oops following SATA request sense [SCSI] ipr: Log error for SAS dual path switch [SCSI] ipr: Enable logging of debug error data for all devices [SCSI] ipr: Add new PCI-E IDs to device table ...
2007-05-04[S390] tape: New read configuration data.Michael Holzheu
Instead of the deprecated read_conf_data(), implement a new function tape_3590_read_dev_chars(). Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-05-04[S390] qeth: New read configuration data.Cornelia Huck
Instead of the deprecated read_conf_data(), implement a new function qeth_read_conf_data(). Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-05-04[S390] dasd: New read device characteristics and read configuration data.Cornelia Huck
Instead of the deprecated read_dev_chars() and read_conf_data_lpm(), implement dasd_generic_read_dev_chars() and dasd_eckd_read_conf_lpm(). These should even recover better from error than the original cio functions. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-05-04[S390] qdio: make qdio statistics SMP-capableUrsula Braun
Use atomic_t/atomic64_t to make qdio performance statistics smp safe. Remove temporarily calculation of "total time of inbound actions". Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27s390: cio: Delay uevents for subchannelsCornelia Huck
We often have the situation that we register a subchannel and start device recognition, only to find out that the device is not usable after all, which triggers an unregister of the subchannel. This often happens on hundreds of subchannels on a LPAR, leading to a storm of events which aren't of any use. Therefore, use uevent_suppress to delay the KOBJ_ADD uevent for a subchannel until we know that its ccw_device is to be registered. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Eric Rannaud <eric.rannaud@gmail.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27qeth: Remove usage of subsys.rwsemCornelia Huck
the current driver tree contains the removal of subsys.rwsem. Unfortunately, this breaks qeth. However, it should be no problem to fix the walking of the devices for /proc/qeth: No need to take subsys.rwsem during walking the devices, driver_find_devices() should already suffice. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27uevent: use add_uevent_var() instead of open coding itEric Rannaud
Make use of add_uevent_var() instead of (often incorrectly) open coding it. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Eric Rannaud <eric.rannaud@gmail.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (448 commits) [IPV4] nl_fib_lookup: Initialise res.r before fib_res_put(&res) [IPV6]: Fix thinko in ipv6_rthdr_rcv() changes. [IPV4]: Add multipath cached to feature-removal-schedule.txt [WIRELESS] cfg80211: Clarify locking comment. [WIRELESS] cfg80211: Fix locking in wiphy_new. [WEXT] net_device: Don't include wext bits if not required. [WEXT]: Misc code cleanups. [WEXT]: Reduce inline abuse. [WEXT]: Move EXPORT_SYMBOL statements where they belong. [WEXT]: Cleanup early ioctl call path. [WEXT]: Remove options. [WEXT]: Remove dead debug code. [WEXT]: Clean up how wext is called. [WEXT]: Move to net/wireless [AFS]: Eliminate cmpxchg() usage in vlocation code. [RXRPC]: Fix pointers passed to bitops. [RXRPC]: Remove bogus atomic_* overrides. [AFS]: Fix u64 printing in debug logging. [AFS]: Add "directory write" support. [AFS]: Implement the CB.InitCallBackState3 operation. ...
2007-04-27[S390] SPIN_LOCK_UNLOCKED cleanup in drivers/s390Milind Arun Choudhary
SPIN_LOCK_UNLOCKED cleanup,use __SPIN_LOCK_UNLOCKED instead. Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] Processor degradation notification.Heiko Carstens
Generate uevents for all cpus if cpu capability changes. This can happen e.g. because the cpus are overheating. The cpu capability can be read via /sys/devices/system/cpu/cpuN/capability. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2007-04-27[S390] sclp: fix coding style.Stefan Haberland
Use only capital letters for defines. Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] vmlogrdr: stop IUCV connection in vmlogrdr_release.Ursula Braun
Reopen of /dev/account failed. The IUCV path has to be terminated in vmlogrdr_release. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] sclp: initialize early.Peter Oberparleiter
Add explicit sclp initialization for those sclp users that do not register with the interface. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] ctc: kmalloc->kzalloc/casting cleanups.Ahmed S. Darwish
A patch for the CTC / ESCON network driver. Switch from kmalloc to kzalloc when appropriate, remove some unnecessary kmalloc casts too. Since I have no s390 machine, I didn't compile it but I examined it carefully. Signed-off-by: "Ahmed S. Darwish" <darwish.07@gmail.com> Cc: Frank Pavlic <fpavlic@de.ibm.com> Cc: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] zfcpdump support.Michael Holzheu
s390 machines provide hardware support for creating Linux dumps on SCSI disks. For creating a dump a special purpose dump Linux is used. The first 32 MB of memory are saved by the hardware before the dump Linux is booted. Via an SCLP interface, the saved memory can be accessed from Linux. This patch exports memory and registers of the crashed Linux to userspace via a debugfs file. For more information refer to Documentation/s390/zfcpdump.txt, which is included in this patch. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2007-04-27[S390] dasd: Add ipldev parameter.Peter Oberparleiter
Specifying 'ipldev' in the dasd= kernel parameter will automatically activate the boot device for use by the dasd driver. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] dasd: Add sysfs attribute status and generate uevents.Horst Hummel
This patch adds a sysfs-attribute 'status' to make the DASD device-status accessible from user-space. In addition, the DASD driver generates an uevent(CHANGE) for the ccw-device on each device-status change. This enables user-space applications (e.g. udev) to do related processing. Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] Get rid of console setup functions.Heiko Carstens
We get this: Section mismatch: reference to .init.text:con3270_consetup from .data between 'con3270' (at offset 0x45c8) and 'con3270_fn' Section mismatch: reference to .init.text:con3215_consetup from .data between 'con3215' (at offset 0x4678) and 'raw3215_ccw_driver' Since there is no difference between a non present console setup function and one that returns only 0 remove them. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2007-04-27[S390] cio: Unregister ccw devices directly.Cornelia Huck
We used to unregister ccw devices not directly from the I/O subchannel remove function in order to avoid lifelocks on the css bus semaphore. This semaphore is gone, and there is no reason to not unregister the ccw device directly (it is even better since it is more in keeping with the goal of immediate disconnect). Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] cio: cm_enable memory leak.Cornelia Huck
We allocage two pages when channel path measurements are enabled via cm_enable. We must not forget to free them again when channel path measurements are disabled again. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] cio: ccwgroup register vs. unregister.Cornelia Huck
Introduce a mutex for struct ccwgroup to prevent simuntaneous register/unregister on the same ccwgroup device. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] cio: Dont call css_update_ssd_info from interrupt context.Cornelia Huck
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] cio: fix subchannel channel-path data usagePeter Oberparleiter
Ensure that channel-path related subchannel data is only retrieved and used when it is valid and that it is updated when it may have changed. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] cio: replace subchannel evaluation queue with bitmapPeter Oberparleiter
Use a bitmap for indicating which subchannels require evaluation instead of allocating memory for each evaluation request. This approach reduces memory consumption during recovery in case of massive evaluation request occurrence and removes the need for memory allocation failure handling. Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] cio: Re-start path verification after aborting internal I/O.Stefan Bader
Path verification triggered by changes to the available CHPIDs will be interrupted by another change but not re-started. This results in an invalid path mask. To solve this make sure to completely re-start path verification when changing the available paths. Signed-off-by: Stefan Bader <shbader@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] cio: Use add_uevent_var.Cornelia Huck
Convert ccw_uevent to use add_uevent_var and adapt snprint_alias. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] cio: Channel-path configure function.Peter Oberparleiter
Add a new attribute to the channel-path sysfs directory through which channel-path configure operations can be triggered. Also listen for hardware events requesting channel-path configure operations and process them accordingly. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2007-04-27[S390] cio: Clean up online_store.Cornelia Huck
Detangle the online_store code and make it more readable. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] cio: observe chpid valid flagPeter Oberparleiter
Check validity flag of CHPID description data before continuing with channel-path initialization. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-04-27[S390] cio: Introduce separate files for channel-path related code.Peter Oberparleiter
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2007-04-27[S390] cio: Allow 0 and 1 as input for channel path status attribute.Peter Oberparleiter
Channel path status can now be modified by writing '0' and '1' to the sysfs status attribute in addition to 'offline' and 'online' respectively. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2007-04-27[S390] cio: Introduce struct chp_id.Peter Oberparleiter
Introduce data type for channel-path IDs. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2007-04-27[S390] cio/ipl: Clean interface between cio and ipl code.Heiko Carstens
Clean interface between cio and ipl code, so Peter stops complaining. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2007-04-25[SK_BUFF]: Introduce skb_copy_to_linear_data{_offset}Arnaldo Carvalho de Melo
To clearly state the intent of copying to linear sk_buffs, _offset being a overly long variant but interesting for the sake of saving some bytes. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
2007-04-25[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}Arnaldo Carvalho de Melo
To clearly state the intent of copying from linear sk_buffs, _offset being a overly long variant but interesting for the sake of saving some bytes. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2007-04-25[SK_BUFF]: Convert skb->tail to sk_buff_data_tArnaldo Carvalho de Melo
So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes on 64bit architectures, allowing us to combine the 4 bytes hole left by the layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4 64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN... :-) Many calculations that previously required that skb->{transport,network, mac}_header be first converted to a pointer now can be done directly, being meaningful as offsets or pointers. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>