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2013-09-11i40e: driver ethtool coreJesse Brandeburg
This patch contains the ethtool interface and implementation. The goal in this patch series is minimal functionality while not including much in the way of "set support." Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> CC: PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com> CC: e1000-devel@lists.sourceforge.net Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-09-11i40e: transmit, receive, and NAPIJesse Brandeburg
This patch contains the transmit, receive, and NAPI routines, as well as ancillary routines. This file is code that is (will be) used by both the VF and PF drivers. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> CC: PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com> CC: e1000-devel@lists.sourceforge.net Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-09-11i40e: main driver coreJesse Brandeburg
This is the driver for the Intel(R) Ethernet Controller XL710 Family. This driver is targeted at basic ethernet functionality only, and will be improved upon further as time goes on. This patch contains the driver entry points but does not include transmit and receive (see the next patch in the series) routines. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> CC: PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com> CC: e1000-devel@lists.sourceforge.net Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-09-10Merge tag 'for-v3.12' of git://git.infradead.org/battery-2.6Linus Torvalds
Pull battery/power supply driver updates from Anton Vorontsov: "New drivers: - APM X-Gene system reboot driver by Feng Kan and Loc Ho (APM). - Qualcomm MSM reboot/poweroff driver by Abhimanyu Kapur (Codeaurora). - Texas Instruments BQ24190 charger driver by Mark A. Greer (Animal Creek Technologies). - Texas Instruments TWL4030 MADC battery driver by Lukas Märdian and Marek Belisko (Golden Delicious Computers). The driver is used on Freerunner GTA04 phones. Highlighted fixes and improvements: - Suspend/wakeup logic improvements: power supply objects will block system suspend until all power supply events are processed. Thanks to Zoran Markovic (Linaro), Arve Hjonnevag and Todd Poynor (Google)" * tag 'for-v3.12' of git://git.infradead.org/battery-2.6: rx51_battery: Fix channel number when reading adc value power: Add twl4030_madc battery driver. bq24190_charger: Workaround SS definition problem on i386 builds power_supply: Prevent suspend until power supply events are processed vexpress-poweroff: Should depend on the required infrastructure twl4030-charger: Fix compiler warning with regulator_enable() rx51_battery: Replace hardcoded channels values. bq24190_charger: Add support for TI BQ24190 Battery Charger ab8500-charger: We print an unintended error message max8925_power: Fix missing of_node_put power_supply: Replace strict_strtol() with kstrtol() power: Add APM X-Gene system reboot driver power_supply: tosa_battery: Get rid of irq_to_gpio usage power supply: collie_battery: Convert to use dev_pm_ops power_supply: Make goldfish_battery depend on GOLDFISH || COMPILE_TEST power: reset: Add msm restart support MAINTAINERS: drivers/power: add entry for SmartReflex AVS drivers
2013-09-10Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc fixes from Ben Herrenschmidt: "Here are a handful of small powerpc fixes. A couple of section mismatches (always worth fixing), a missing export of a new symbol causing build failures of modules, a page fault deadlock fix (interestingly that bug has been around for a LONG time, though it seems to be more easily triggered by KVM) and fixing pseries default idle loop in the absence of the cpuidle drivers (such as during boot)" * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Default arch idle could cede processor on pseries fbdev/ps3fb: Fix section mismatch warning for ps3fb_probe powerpc: Fix section mismatch warning for prom_rtas_call powerpc: Fix possible deadlock on page fault powerpc: Export cpu_to_chip_id() to fix build error
2013-09-10target/iscsi: Bump versions to v4.1.0Nicholas Bellinger
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10target: Update copyright ownership/year information to 2013Nicholas Bellinger
Update copyright ownership/year information for target-core, loopback, iscsi-target, tcm_qla2xx, vhost and iser-target. Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10iscsi-target: Bump default TCP listen backlog to 256Nicholas Bellinger
This patch bumps the default TCP listen backlog within iscsit_setup_np() from 5 to 256, in order to reduce the overall latency caused by a small backlog with 100's of simultaneous login attempts directed to the same single network portal. Also add a ISCSIT_TCP_BACKLOG macro in iscsi_target_core.h. Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10target: Fix >= v3.9+ regression in PR APTPL + ALUA metadata write-outGera Kazakov
This patch fixes a >= v3.9+ regression in __core_scsi3_write_aptpl_to_file() + core_alua_write_tpg_metadata() write-out, where a return value of -EIO was incorrectly being returned upon success. This bug was originally introduced in: commit 0e9b10a90f1c30f25dd6f130130240745ab14010 Author: Al Viro <viro@zeniv.linux.org.uk> Date: Sat Feb 23 15:22:43 2013 -0500 target: writev() on single-element vector is pointless However, given that the return of core_scsi3_update_and_write_aptpl() was not used to determine if a command should be returned with non GOOD status, this bug was not being triggered in PR logic until v3.11-rc1 by commit: commit 459f213ba162bd13e113d6f92a8fa6c780fd67ed Author: Andy Grover <agrover@redhat.com> Date: Thu May 16 10:41:02 2013 -0700 target: Allocate aptpl_buf inside update_and_write_aptpl() So, go ahead and only return -EIO if kernel_write() returned a negative value. Reported-by: Gera Kazakov <gkazakov@msn.com> Signed-off-by: Gera Kazakov <gkazakov@msn.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andy Grover <agrover@redhat.com> Cc: stable@vger.kernel.org # 3.9+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10iscsi-target; Bump default CmdSN Depth to 64Nicholas Bellinger
This patch bumps the default TA_DEFAULT_CMDSN_DEPTH from 16 -> 64, which is closer to a sane default for larger pipes @ 10 Gb/sec with traditional iSCSI, or @ 40/56 Gb/sec Ethernet/Infiniband with iSCSI Extentions for RDMA. There is really no downside to increasing this default value for 1 Gb/sec. Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10iscsi-target: Remove unnecessary wait_for_completion in iscsi_get_thread_setNicholas Bellinger
This patch removes an unnecessary wait_for_completion within iscsi_get_thread_set(), that would wait for 1 second before trying to obtain an inactive struct iscsi_thread_set from iscsi_get_ts_from_inactive_list(). Since iscsi_allocate_thread_sets() will already be adding the newly allocated iscsi_thread_set to the inactive list directly, there is no need to wait here. Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10iscsi-target: Add thread_set->ts_activate_sem + use common deallocateNicholas Bellinger
This patch removes the iscsi_thread_set->[rx,tx]_post_start_comp that was originally used synchronize startup between rx and tx threads within a single thread_set. Instead, use a single ->ts_activate_sem in iscsi_activate_thread_set() to wait for both processes to awake in the RX/TX pre handlers. Also, go ahead and refactor thread_set deallocate code into a common iscsi_deallocate_thread_one(), and update iscsi_deallocate_thread_sets() and iscsi_deallocate_extra_thread_sets() use this code v3 changes: - Make iscsi_deallocate_thread_one defined as static (Fengguang) v2 changes: - Set ISCSI_THREAD_SET_ACTIVE before calling complete in iscsi_activate_thread_set - Protect ts->conn sanity checks with ->ts_state_lock in RX/TX pre handlers - Add ->ts_activate_sem to save extra context switches per iscsi_activate_thread_set() call. - Refactor thread_set shutdown into iscsi_deallocate_thread_one() Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm fixes from Dave Airlie: "Daniel had some fixes queued up, that were delayed, the stolen memory ones and vga arbiter ones are quite useful, along with his usual bunch of stuff, nothing for HSW outputs yet. The one nouveau fix is for a regression I caused with the poweroff stuff" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (30 commits) drm/nouveau: fix oops on runtime suspend/resume drm/i915: Delay disabling of VGA memory until vgacon->fbcon handoff is done drm/i915: try not to lose backlight CBLV precision drm/i915: Confine page flips to BCS on Valleyview drm/i915: Skip stolen region initialisation if none is reserved drm/i915: fix gpu hang vs. flip stall deadlocks drm/i915: Hold an object reference whilst we shrink it drm/i915: fix i9xx_crtc_clock_get for multiplied pixels drm/i915: handle sdvo input pixel multiplier correctly again drm/i915: fix hpd work vs. flush_work in the pageflip code deadlock drm/i915: fix up the relocate_entry refactoring drm/i915: Fix pipe config warnings when dealing with LVDS fixed mode drm/i915: Don't call sg_free_table() if sg_alloc_table() fails i915: Update VGA arbiter support for newer devices vgaarb: Fix VGA decodes changes vgaarb: Don't disable resources that are not owned drm/i915: Pin pages whilst mapping the dma-buf drm/i915: enable trickle feed on Haswell x86: add early quirk for reserving Intel graphics stolen memory v5 drm/i915: split PCI IDs out into i915_drm.h v4 ...
2013-09-10Merge tag 'hwmon-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon cleanups from Guenter Roeck: "Minor cleanup in ina2xx and hwmon-vid drivers; no functional changes" * tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (ina2xx) Remove casting the return value which is a void pointer hwmon: (hwmon-vid) Add __maybe_unused attribute to dummy variable
2013-09-11fbdev/ps3fb: Fix section mismatch warning for ps3fb_probeVladimir Murzin
While cross-building for PPC64 I've got WARNING: drivers/video/built-in.o(.text+0x9f9ca): Section mismatch in reference from the function .ps3fb_probe() to th e variable .init.data:ps3fb_fix The function .ps3fb_probe() references the variable __initdata ps3fb_fix. This is often because .ps3fb_probe lacks a __initdata annotation or the annotation of ps3fb_fix is wrong. WARNING: drivers/video/built-in.o(.text+0x9f9d2): Section mismatch in reference from the function .ps3fb_probe() to the variable .init.data:ps3fb_fix The function .ps3fb_probe() references the variable __initdata ps3fb_fix. This is often because .ps3fb_probe lacks a __initdata annotation or the annotation of ps3fb_fix is wrong. WARNING: drivers/built-in.o(.text+0xe222a): Section mismatch in reference from the function .ps3fb_probe() to the variable .init.data:ps3fb_fix The function .ps3fb_probe() references the variable __initdata ps3fb_fix. This is often because .ps3fb_probe lacks a __initdata annotation or the annotation of ps3fb_fix is wrong. WARNING: drivers/built-in.o(.text+0xe2232): Section mismatch in reference from the function .ps3fb_probe() to the variable .init.data:ps3fb_fix The function .ps3fb_probe() references the variable __initdata ps3fb_fix. This is often because .ps3fb_probe lacks a __initdata annotation or the annotation of ps3fb_fix is wrong. WARNING: vmlinux.o(.text+0x561d4a): Section mismatch in reference from the function .ps3fb_probe() to the variable .init.data:ps3fb_fix The function .ps3fb_probe() references the variable __initdata ps3fb_fix. This is often because .ps3fb_probe lacks a __initdata annotation or the annotation of ps3fb_fix is wrong. Mismatch was introduced with 48c68c4f "Drivers: video: remove __dev* attributes." Remove __init data annotation from ps3fb_fix. Signed-off-by: Vladimir Murzin <murzin.v@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-10[SCSI] lpfc 8.3.42: Update lpfc version to driver version 8.3.42James Smart
Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Fixed issue of task management commands having a fixed ↵James Smart
timeout Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Fixed inconsistent spin lock usage.James Smart
Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Fix driver's abort loop functionality to skip IOs ↵James Smart
already getting aborted Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Fixed failure to allocate SCSI buffer on PPC64 platform ↵James Smart
for SLI4 devices Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Fix WARN_ON when driver unloadsJames Smart
Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Avoided making pci bar ioremap call during dual-chute ↵James Smart
WQ/RQ pci bar selection Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Fixed driver iocbq structure's iocb_flag field running ↵James Smart
out of space Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Fix crash on driver load due to cpu affinity logicJames Smart
Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Fixed logging format of setting driver sysfs attributes ↵James Smart
hard to interpret Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Fixed back to back RSCNs discovery failure.James Smart
Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Fixed race condition between BSG I/O dispatch and ↵James Smart
timeout handling Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Fixed function mode field defined too small for not ↵James Smart
recognizing dual-chute mode Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Back out data count,(residual fcfi_parm) fix for bad target.James Smart
Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] lpfc 8.3.42: Fixed mailbox memory leak.James Smart
Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10iscsi-target: Fix race with thread_pre_handler flush_signals + ↵Nicholas Bellinger
ISCSI_THREAD_SET_DIE This patch addresses an long standing race in iscsi_[rx,tx]_thread_pre_handler() use of flush_signals(), and between iscsi_deallocate_extra_thread_sets() setting ISCSI_THREAD_SET_DIE before calling kthread_stop(). It addresses the issue by both holding ts_state_lock before calling send_sig() in iscsi_deallocate_extra_thread_sets(), as well as only calling flush_signals() when ts->status != ISCSI_THREAD_SET_DIE within iscsi_[rx,tx]_thread_pre_handler() code. v2 changes: - Add explicit complete(&ts->[rx,tx]_start_comp); before kthread_stop() in iscsi_deallocate_extra_thread_sets() - Drop left-over send_sig() calls in iscsi_deallocate_extra_thread_sets() - Add kthread_should_stop() check in iscsi_signal_thread_pre_handler() Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10target: remove unused including <linux/version.h>Wei Yongjun
Remove including <linux/version.h> that don't need it. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10iser-target: introduce fast memory registration mode (FRWR)Vu Pham
This model was introduced in 00f7ec36c "RDMA/core: Add memory management extensions support" and works when the IB device supports the IB_DEVICE_MEM_MGT_EXTENSIONS capability. Upon creating the isert device, ib_isert will test whether the HCA supports FRWR. If supported then set the flag and assign function pointers that handle fast registration and deregistration of appropriate resources (fast_reg descriptors). When new connection coming in, ib_isert will check frwr flag and create frwr resouces, if fail to do it will switch back to old model of using global dma key and turn off the frwr support. Registration is done using posting IB_WR_FAST_REG_MR to the QP and invalidations using posting IB_WR_LOCAL_INV. Signed-off-by: Vu Pham <vu@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10iser-target: generalize rdma memory registration and cleanupVu Pham
Current driver uses global dma key to register the memory pointed by sg list provided by the target core. This is the preparation step for adding more methods like fast path memory registration, make the reg/unreg calls be function pointers. Signed-off-by: Vu Pham <vu@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10iser-target: move rdma wr processing to a shared functionVu Pham
isert_put_datain() and isert_get_dataout() share a lot of code in rdma wr processing, move this common code to a shared function. Use isert_unmap_cmd to cleanup for RDMA_READ completion. Remove duplicate field in isert_cmd and isert_rdma_wr structs Change misc debug messages to track isert_cmd Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Vu Pham <vu@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10target: Enable global EXTENDED_COPY setup/releaseNicholas Bellinger
Add calls to target_xcopy_setup_pt() + target_xcopy_release_pt() to target_core_init_configfs() and target_core_exit_configfs() respectively. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: Roland Dreier <roland@purestorage.com> Cc: Zach Brown <zab@redhat.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
2013-09-10target: Add Third Party Copy (3PC) bit in INQUIRY responseNicholas Bellinger
This patch adds the Third Party Copy (3PC) bit to signal support for EXTENDED_COPY within standard inquiry response data. Also add emulate_3pc device attribute in configfs (enabled by default) to allow the exposure of this bit to be disabled, if necessary. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: Roland Dreier <roland@purestorage.com> Cc: Zach Brown <zab@redhat.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
2013-09-10target: Enable EXTENDED_COPY setup in spc_parse_cdbNicholas Bellinger
Setup up the se_cmd->execute_cmd() pointers for EXTENDED_COPY and RECEIVE_COPY_RESULTS handling within spc_parse_cdb() Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: Roland Dreier <roland@purestorage.com> Cc: Zach Brown <zab@redhat.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
2013-09-10target: Add support for EXTENDED_COPY copy offload emulationNicholas Bellinger
This patch adds support for EXTENDED_COPY emulation from SPC-3, that enables full copy offload target support within both a single virtual backend device, and across multiple virtual backend devices. It also functions independent of target fabric, and supports copy offload across multiple target fabric ports. This implemenation supports both EXTENDED_COPY PUSH and PULL models of operation, so the actual CDB may be received on either source or desination logical unit. For Target Descriptors, it currently supports the NAA IEEE Registered Extended designator (type 0xe4), which allows the reference of target ports to occur independent of fabric type using EVPD 0x83 WWNs. For Segment Descriptors, it currently supports copy from block to block (0x02) mode. It also honors any present SCSI reservations of the destination target port. Note that only Supports No List Identifier (SNLID=1) mode is supported. Also included is basic RECEIVE_COPY_RESULTS with service action type OPERATING PARAMETERS (0x03) required for SNLID=1 operation. v3 changes: - Fix incorrect return type in target_do_receive_copy_results() (Fengguang) v2 changes: - Use target_alloc_sgl() instead of transport_generic_get_mem() - Convert debug output to use pr_debug() - Convert target_xcopy_parse_target_descriptors() NAA IEEN WWN dump to use 0x%16phN format specification - Drop unnecessary xcopy_pt_cmd->xpt_passthrough_wsem, and associated usage in xcopy_pt_write_pending() and target_xcopy_issue_pt_cmd() - Add check for unsupported EXTENDED_COPY(LID4) service action bits in target_do_xcopy() Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: Roland Dreier <roland@purestorage.com> Cc: Zach Brown <zab@redhat.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
2013-09-10target: Avoid non-existent tg_pt_gp_mem in target_alua_state_checkNicholas Bellinger
This patch adds an check for a non-existent port->sep_alua_tg_pt_gp_mem within target_alua_state_check(), which is not present for internally dispatched EXTENDED_COPY WRITE I/O to the destination target port. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: Roland Dreier <roland@purestorage.com> Cc: Zach Brown <zab@redhat.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
2013-09-10target: Add global device list for EXTENDED_COPYNicholas Bellinger
EXTENDED_COPY needs to be able to search a global list of devices based on NAA WWN device identifiers, so add a simple g_device_list protected by g_device_mutex. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: Roland Dreier <roland@purestorage.com> Cc: Zach Brown <zab@redhat.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
2013-09-10target: Make helpers non static for EXTENDED_COPY command setupNicholas Bellinger
Both target_alloc_sgl() and transport_generic_map_mem_to_cmd() are required by EXTENDED_COPY logic when setting up internally dispatched command descriptors, so go ahead and make both of these non static. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: Roland Dreier <roland@purestorage.com> Cc: Zach Brown <zab@redhat.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
2013-09-10target: Make spc_parse_naa_6h_vendor_specific non staticNicholas Bellinger
This patch makes spc_parse_naa_6h_vendor_specific() available to other target code, which is required by EXTENDED_COPY when comparing the received NAA WWN device identifer for locating the associated se_device backend. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: Roland Dreier <roland@purestorage.com> Cc: Zach Brown <zab@redhat.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
2013-09-10target: Make target_core_subsystem defined as non staticNicholas Bellinger
This patch makes the top-level target_core_subsystem array available to other target code, which is required by EXTENDED_COPY to pin the backend se_device using configfs_depend_item(), in order to ensure it can't be removed for the duration of a EXTENDED_COPY operation. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: Roland Dreier <roland@purestorage.com> Cc: Zach Brown <zab@redhat.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
2013-09-10target/tcm_qla2xxx: Add/use target_reverse_dma_direction() in ↵Nicholas Bellinger
target_core_fabric.h Reversing the dma_data_direction for pci_map_sg() friends is useful for other drivers, so move it from tcm_qla2xxx into inline code within target_core_fabric.h. Also drop internal usage of equivlient in tcm_qla2xxx fabric code. Reported-by: Christoph Hellwig <hch@lst.de> Cc: Roland Dreier <roland@purestorage.com> Cc: Giridhar Malavali <giridhar.malavali@qlogic.com> Cc: Chad Dupuis <chad.dupuis@qlogic.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
2013-09-10target: Release COMPARE_AND_WRITE mutex in generic failure pathNicholas Bellinger
This patch adds a extra check for SCF_COMPARE_AND_WRITE within transport_generic_request_failure() to invoke the callback for compare_and_write_callback() or compare_and_write_done(), in order to release se_dev->caw_mutex from the generic failure path. It also adds to checks within compare_and_write_callback() to avoid processing when transport_generic_request_failure() occurs early enough that cmd->t_data_sg or cmd->t_bidi_data_sg have not been setup yet, nor se_dev->caw_mutex obtained from within sbc_compare_and_write(). v4 changes: - Add explicit check for cmd->transport_complete_callback in transport_generic_request_failure() to handle case where sbc_compare_and_write()clears callback pointer (Dan Carpenter) Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10target: Add compare_and_write_post() completion callback fall throughNicholas Bellinger
This patch changes target_complete_ok_work() to fall through after calling the se_cmd->transport_complete_callback() -> compare_and_write_post() callback, by keying off the existance of SCF_COMPARE_AND_WRITE_POST. This is necessary because once SCF_COMPARE_AND_WRITE_POST has been set by compare_and_write_post(), the SCSI response needs to be sent via TFO->queue_status(). Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
2013-09-10target: Add support for COMPARE_AND_WRITE emulationNicholas Bellinger
This patch adds support for COMPARE_AND_WRITE emulation on a per block basis. This logic is used as an atomic test and set primative currently used by VMWare ESX VAAI for performing array side locking of individual VMFS extent ownership. This includes the COMPARE_AND_WRITE CDB parsing within sbc_parse_cdb(), and does the majority of the work within the compare_and_write_callback() to perform the verify instance user data comparision, and subsequent write instance user data I/O submission upon a successfull comparision. The synchronization is enforced by se_device->caw_sem, that is obtained before the initial READ I/O submission in sbc_compare_and_write(). The mutex is then released upon MISCOMPARE in compare_and_write_callback(), or upon WRITE instance user-data completion in compare_and_write_post(). The implementation currently assumes a single logical block (NoLB=1). v4 changes: - Explicitly clear cmd->transport_complete_callback for two failure cases in sbc_compare_and_write() in order to avoid double unlock of ->caw_sem in compare_and_write_callback() (Dan Carpenter) v3 changes: - Convert se_device->caw_mutex to ->caw_sem v2 changes: - Set SCF_COMPARE_AND_WRITE and cmd->execute_cmd() to sbc_compare_and_write() during setup in sbc_parse_cdb() - Use sbc_compare_and_write() for initial READ submission with DMA_FROM_DEVICE - Reset cmd->execute_cmd() to sbc_execute_rw() for write instance user-data in compare_and_write_callback() - Drop SCF_BIDI command flag usage - Set TRANSPORT_PROCESSING + transport_state flags before write instance submission, and convert to __target_execute_cmd() - Prevent sbc_get_size() from being being called twice to generate incorrect size in sbc_parse_cdb() - Enforce se_device->caw_mutex synchronization between initial READ I/O submission, and final WRITE I/O completion. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
2013-09-10[SCSI] lpfc 8.3.42: Fix random errors using first burstJames Smart
Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10staging/lustre/libcfs: cleanup linux-mem.hPeng Tao
remove shrinker related wrappers. Signed-off-by: Peng Tao <tao.peng@emc.com> Signed-off-by: Andreas Dilger <andreas.dilger@intel.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Dave Chinner <dchinner@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>