- 23 7月, 2011 6 次提交
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由 Rasesh Mody 提交于
Change details: - Replace IOC HB failure event notification with a more generic mechanism that is capable of sending enble, disable, and failed events to registered modules. As a result, cee module event handling callback bfa_cee_hbfail() is replaced with bfa_cee_notify() so that it can receive and handle different events from IOC. Signed-off-by: NRasesh Mody <rmody@brocade.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Rasesh Mody 提交于
Change details: - Driver cleanup as per new checkpatch v0.31 Signed-off-by: NRasesh Mody <rmody@brocade.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Rasesh Mody 提交于
Change details: - Print the dirver version when module is loaded. Signed-off-by: NRasesh Mody <rmody@brocade.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Sergei Shtylyov 提交于
The driver reads PCI subsystem ID from the PCI configuration register while it's already stored by the PCI subsystem in the 'subsystem_device' field of 'struct pci_dev'... Signed-off-by: NSergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Sergei Shtylyov 提交于
The driver reads PCI subsystem IDs from the PCI configuration registers while they are already stored by the PCI subsystem in the 'subsystem_{vendor|device}' fields of 'struct pci_dev'... Signed-off-by: NSergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Mike Marciniszyn 提交于
With ib_qib options: options ib_qib krcvqs=1 pcie_caps=0x51 rcvhdrcnt=4096 singleport=1 ibmtu=4 a run of ib_write_bw -a yields the following: ------------------------------------------------------------------ #bytes #iterations BW peak[MB/sec] BW average[MB/sec] 1048576 5000 2910.64 229.80 ------------------------------------------------------------------ The top cpu use in a profile is: CPU: Intel Architectural Perfmon, speed 2400.15 MHz (estimated) Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a unit mask of 0x00 (No unit mask) count 1002300 Counted LLC_MISSES events (Last level cache demand requests from this core that missed the LLC) with a unit mask of 0x41 (No unit mask) count 10000 samples % samples % app name symbol name 15237 29.2642 964 17.1195 ib_qib.ko qib_7322intr 12320 23.6618 1040 18.4692 ib_qib.ko handle_7322_errors 4106 7.8860 0 0 vmlinux vsnprintf Analysis of the stats, profile, the code, and the annotated profile indicate: - All of the overflow interrupts (one per packet overflow) are serviced on CPU0 with no mitigation on the frequency. - All of the receive interrupts are being serviced by CPU0. (That is the way truescale.cmds statically allocates the kctx IRQs to CPU) - The code is spending all of its time servicing QIB_I_C_ERROR RcvEgrFullErr interrupts on CPU0, starving the packet receive processing. - The decode_err routine is very inefficient, using a printf variant to format a "%s" and continues to loop when the errs mask has been cleared. - Both qib_7322intr and handle_7322_errors read pci registers, which is very inefficient. The fix does the following: - Adds a tasklet to service QIB_I_C_ERROR - Replaces the very inefficient scnprintf() with a memcpy(). A field is added to qib_hwerror_msgs to save the sizeof("string") at compile time so that a strlen is not needed during err_decode(). - The most frequent errors (Overflows) are serviced first to exit the loop as early as possible. - The loop now exits as soon as the errs mask is clear rather than fruitlessly looping through the msp array. With this fix the performance changes to: ------------------------------------------------------------------ #bytes #iterations BW peak[MB/sec] BW average[MB/sec] 1048576 5000 2990.64 2941.35 ------------------------------------------------------------------ During testing of the error handling overflow patch, it was determined that some CPU's were slower when servicing both overflow and receive interrupts on CPU0 with different MSI interrupt vectors. This patch adds an option (krcvq01_no_msi) to not use a dedicated MSI interrupt for kctx's < 2 and to service them on the default interrupt. For some CPUs, the cost of the interrupt enter/exit is more costly than then the additional PCI read in the default handler. Signed-off-by: NMike Marciniszyn <mike.marciniszyn@qlogic.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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- 22 7月, 2011 34 次提交
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由 Jiri Kosina 提交于
Add forgotten entry into the global blacklist. Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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由 Andy Shevchenko 提交于
This patch drops transport_asciihex_to_binaryhex() in favor of proper hex2bin usage from include/linux/kernel.h:hex2bin() Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Andy Shevchenko 提交于
Additionally this patch brings proper apply of the designator type. However, the original code luckily has no bug, because the association equals to 0. Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: James Bottomley <jbottomley@parallels.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Nicholas Bellinger 提交于
This patch adds the default 'Unrestricted reordering allowed' for SCSI control mode page QUEUE ALGORITHM MODIFIER on a per se_device basis in target_modesense_control() following spc4r23. This includes a new emuluate_rest_reord configfs attribute that currently (only) accepts zero to signal 'Unrestricted reordering allowed' in control mode page usage by the backend target device. Reported-by: NRoland Dreier <roland@purestorage.com> Signed-off-by: NNicholas Bellinger <nab@risingtidesystems.com>
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由 Nicholas Bellinger 提交于
This patch breaks up the ->map_task_SG() backend call into two seperate ->map_control_SG() and ->map_data_SG() in order to better address IBLOCK and pSCSI. IBLOCK only allocates bios for ->map_data_SG(), and pSCSI will allocate a struct request for both cases. This patch fixes incorrect usage of ->map_task_SG() for all se_cmd descriptors in transport_generic_new_cmd() by moving the call into it's proper location directly inside of transport_allocate_data_tasks() Reported-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Andy Grover 提交于
This patch contains the squashed version of forth round series cleanups from Andy and Christoph following the post heavy lifting in the preceeding: 'Eliminate usage of struct se_mem' and 'Make all control CDBs scatter-gather' changes. This also includes a conversion of target core and the v3.0 mainline fabric modules (loopback and tcm_fc) to use pr_debug and the CONFIG_DYNAMIC_DEBUG infrastructure! These have been squashed into this third and final round for v3.1. target: Remove ifdeffed code in t_g_process_write target: Remove direct ramdisk code target: Rename task_sg_num to task_sg_nents target: Remove custom debug macros for pr_debug. Use pr_err(). target: Remove custom debug macros in mainline fabrics target: Set WSNZ=1 in block limits VPD. Abort if WRITE_SAME sectors = 0 target: Remove transport do_se_mem_map callback target: Further simplify transport_free_pages target: Redo task allocation return value handling target: Remove extra parentheses target: change alloc_task call to take *cdb, not *cmd (nab: Fix bogus struct file assignments in fd_do_readv and fd_do_writev) Signed-off-by: NAndy Grover <agrover@redhat.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Andy Grover 提交于
Both backstores and fabrics use arrays of struct scatterlist to describe data buffers. However TCM used struct se_mems, basically a linked list of scatterlist entries. We are able to simplify the code by eliminating this intermediate data structure and just using struct scatterlist[] throughout. Also, moved attachment of task to cmd out of transport_generic_get_task and into allocate_control_task and allocate_data_tasks. The reasoning is that it's nonintuitive that get_task should automatically add it to the cmd's task list -- it should just return an allocated, initialized task. That's all it should do, based on the function's name, so either the function shouldn't do it, or the name should change to encapsulate the entire essence of what it does. (nab: Fix compile warnings in tcm_fc, and make transport_kmap_first_data_page honor sg->offset for SGLs from contigious memory with TCM_Loop, and fix control se_cmd descriptor memory leak) Signed-off-by: NAndy Grover <agrover@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Andy Grover 提交于
Since sectors is not modified, it's more straightforward to do this. Signed-off-by: NAndy Grover <agrover@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Andy Grover 提交于
Due to all cdbs' data buffers being referenced by scatterlists, buffers of more than a page are not contiguous. Instead of handling this in all control command handlers, we may be able to get away with just limiting control cdb data buffers to one page. The only control CDBs we handle that have potentially large data buffers are REPORT LUNS and UNMAP, so if we didn't want to live with this limitation, they would need to be modified to walk the pages in the data buffer's sgl. Signed-off-by: NAndy Grover <agrover@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Andy Grover 提交于
Previously, some control CDBs did not allocate memory in pages for their data buffer, but just did a kmalloc. This patch makes all cdbs allocate pages. This has the benefit of streamlining some paths that had to behave differently when we used two allocation methods. The downside is that all accesses to the data buffer need to kmap it before use, and need to handle data in page-sized chunks if more than a page is needed for a given command's data buffer. Finally, note that cdbs with no data buffers are handled a little differently. Before, SCSI_NON_DATA_CDBs would not call get_mem at all (they'd be in the final else in transport_allocate_resources) but now these will make it into generic_get_mem, but just not allocate any buffers. Signed-off-by: NAndy Grover <agrover@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Roland Dreier 提交于
Implement page B1h, Block Device Characteristics, so that we can report a medium rotation rate of 1 (non-rotating / solid state) if the is_nonrot device attribute is set; we update the iblock backend to set this attribute if the underlying Linux block device has its nonrot flag set. Signed-off-by: NRoland Dreier <roland@purestorage.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Roland Dreier 提交于
The current handling of VPD page 00h (Supported VPD Pages) for INQUIRY commands has a couple of problems: - The page length field is incorrectly set to 3, so the entry for 86h (Extended INQUIRY Data) is ignored since it is in the fourth slot. - Even though the code handles pages B0h and B2h, those pages aren't mentioned in the Supported VPD Pages list, so eg the Linux SCSI stack won't actually try to use them. Fix these problems and make things more robust to avoid future problems by moving to a table of supported VPD pages, which means that any added VPD page support will automatically get reported on page 0. Signed-off-by: NRoland Dreier <roland@purestorage.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Roland Dreier 提交于
In target_fabric_configfs_init(), we should allow fabric_mod to be NULL, since THIS_MODULE is NULL for built-in modules. The main method of using the target code may be as modules, but having everything built-in is useful eg to be able to do quick testing with "qemu -kernel". In any case, we shouldn't bomb out fabric registration for a perfectly valid configuration, so simply drop the check of fabric_mod. Signed-off-by: NRoland Dreier <roland@purestorage.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Nicholas Bellinger 提交于
This patch converts ft_queue_cmd() to use wake_up_process() and ft_thread() to use schedule_timeout_interruptible(MAX_SCHEDULE_TIMEOUT) instead of wait_event_interruptible(). This fixes a potential race with the wait_event_interruptible() conditional with qobj->queue_cnt in ft_thread(). This patch also drops the unnecessary set_user_nice(current, -20) in ft_thread(), and drops extra () around two if (!(acl)) conditionals in tfc_conf.c. Reported-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NNicholas A. Bellinger <nab@linux-iscsi.org>
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由 Nicholas Bellinger 提交于
This patch removes the unnecessary EXTRA_CFLAGS includes, and drops the unused -DTCM_FC_DEBUG define. Reported-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NNicholas A. Bellinger <nab@linux-iscsi.org>
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由 Jesper Juhl 提交于
There is a memory leak in tcm_loop_make_scsi_hba(). If all the strstr() calls return NULL and we end up at return ERR_PTR(-EINVAL); then we'll be leaking the memory previously allocated to tl_hba as that variable goes out of scope. This patch should fix the leak. Signed-off-by: NJesper Juhl <jj@chaosbits.net> Signed-off-by: NDan Carpenter <error27@gmail.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Jesper Juhl 提交于
Signed-off-by: NJesper Juhl <jj@chaosbits.net> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Dan Carpenter 提交于
This is an off by one 'tgpt' check in tcm_loop_make_naa_tpg() that could result in memory corruption. Signed-off-by: NDan Carpenter <error27@gmail.com> Signed-off-by: NNicholas A. Bellinger <nab@linux-iscsi.org>
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由 Roland Dreier 提交于
ibd_depth and ibd_force are used write-only. Remove them. ibd_major/minor can be easily retrieved from ibd_bd, so get rid of them too. Signed-off-by: NRoland Dreier <roland@purestorage.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Nicholas Bellinger 提交于
This patch converts iblock_create_virtdevice() to use request_queue->nr_request for se_dev_limits usage of ->hw_queue_depth and ->queue_depth for individual struct se_device export. It also removes the now unused defines for IBLOCK_DEVICE_QUEUE_DEPTH and IBLOCK_MAX_DEVICE_QUEUE_DEPTH Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Roland Dreier 提交于
transport_lookup_tmr_lun() can be called from interrupt context and therefore needs to use IRQ-safe spinlock functions. Fix this up, and to make the locking work, convert the other uses of se_tmr_lock to be IRQ-disabling. Signed-off-by: NRoland Dreier <roland@purestorage.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Roland Dreier 提交于
se_dev_check_online() is called from transport_lookup_cmd_lun(), which as discussed before may be called from interrupt context. So it needs to use spin_lock_irqsave() instead of spin_lock_irq() to avoid enabling interrupts at the wrong time. Signed-off-by: NRoland Dreier <roland@purestorage.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Roland Dreier 提交于
transport_lookup_cmd_lun() may be called from interrupt context (eg tcm_loop_allocate_core_cmd() calls it, and it has a comment that says, "Can be called from interrupt context"), so it needs to use spin_lock_irqsave() instead of spin_lock_irq() to avoid enabling interrupts at the wrong time. (And indeed the last set of lock operations, on lun_cmd_lock, were already using spin_lock_irqsave(), so we just need to fix the other two locks we take) Signed-off-by: NRoland Dreier <roland@purestorage.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Nicholas Bellinger 提交于
This patch adds SCF_EMULATE_QUEUE_FULL support using -EAGAIN failures via transport_handle_queue_full() to signal queue full in completion path TFO->queue_data_in() and TFO->queue_status() callbacks. This is done using a new se_cmd->transport_qf_callback() to handle the following queue full exception cases within target core: *) TRANSPORT_COMPLETE_OK (for completion path queue full) *) TRANSPORT_COMPLETE_QF_WP (for TRANSPORT_WRITE_PENDING queue full) *) transport_send_check_condition_and_sense() failure paths in transport_generic_request_failure() and transport_generic_complete_ok() All logic is driven using se_device->qf_work_queue -> target_qf_do_work() to to requeue outstanding se_cmd at the head of se_dev->queue_obj->qobj_list for transport_processing_thread() execution. Tested using tcm_qla2xxx with MAX_OUTSTANDING_COMMANDS=128 for FCP READ to trigger the TRANSPORT_COMPLETE_OK queue full cases, and a simulated TFO->write_pending() -EAGAIN failure to trigger TRANSPORT_COMPLETE_QF_WP. Reported-by: NRoland Dreier <roland@purestorage.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Nicholas Bellinger 提交于
This patch adds a transport_handle_cdb_direct() optimization for mapping and queueing tasks directly from within fabric processing context by calling the newly exported transport_generic_new_cmd(). This currently expects to be called from process context only, and will fail if called within interrupt context. This patch also leaves transport_generic_handle_cdb() unmodified for the moment to function as expected with existing tcm_fc and ib_srpt fabrics, and will be removed once these have been converted and tested with v4.1 code using transport_handle_cdb_direct(). Based on Andy's original patch here: [PATCH 39/42] target: Call transport_new_cmd instead of adding to cmd queue Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Christoph Hellwig 提交于
The release_cmd_to_pool and release_cmd_direct methods are always the same. Merge them into a single release_cmd method, and clean up the fallout. (nab: fix breakage in transport_generic_free_cmd() parameter build breakage in drivers/target/tcm_fc/tfc_cmd.c) Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Christoph Hellwig 提交于
This patch contains a squashed version to remove unused SCF_* flags: target: remove the unused SCF_SE_DISABLE_ONLINE_CHECK flag target: remove the unused SCF_CMD_PASSTHROUGH_NOALLOC flag target: remove the unused SCF_EMULATE_SYNC_UNMAP flag target: remove the unused SCF_EMULATE_SYNC_CACHE flag Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Christoph Hellwig 提交于
Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Andy Grover 提交于
This patch contains a squashed version of third round series cleanups, improvements ,and simplfications from Andy and Christoph ahead of the heavy lifting between round 3 -> 4 for the target core SGL conversion. This include cleanups to the main target I/O path and other miscellaneous updates. target: Replace custom sg<->buf functions with lib funcs target: Simplify sector limiting code target: get_cdb should never return NULL target: Simplify transport_memcpy_se_mem_read_contig target: Use assignment rather than increment for t_task_cdbs target: Don't pass dma_size to generic_get_mem target: Pass sg with type scatterlist in transport_map_sg_to_mem target: Move task_sg_num next to task_sg in struct se_task target: inline struct se_transport_task into struct se_cmd target: Change name & semantics of transport_get_sectors() target: Remove unused members of se_cmd target: Rename se_cmd.t_task_cdbs to t_task_list_num target: Fix some spelling target: Remove unused var from transport_generic_do_tmr target: map_sg_to_mem: return sg_count in return value target/pscsi: Use min_t for sector limits target/pscsi: Unused param for pscsi_get_bio() target: Rename get_cdb_count to allocate_tasks target: Make transport_generic_new_cmd() available for iscsi-target target: Remove fabric callback to allocate iovecs target: Fix transport_generic_new_cmd WRITE comment (hch: Use __GFP_ZERO usage for alloc_pages() usage) Signed-off-by: NAndy Grover <agrover@redhat.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Nicholas Bellinger 提交于
This patch fixes the handling of WRITE_SAME_[16,32] emulation where a WRITE_SAME_* CDB with number of blocks=0 was being rejected by SCSI expected data transfer length overflow checking in target core. It changes both CDB cases in transport_generic_cmd_sequencer() to use dev->se_sub_dev->se_dev_attrib.block_size to match what sg_write_same is sending us with --num=0. It also fixes target_emulate_write_same() to properly determine the num_blocks with --num=0 case to determine the remaining range for dev->transport->do_discard(). Reported-by: NChris Greiveldinger <chris.greiveldinger@rnanetworks.com> Signed-off-by: NNicholas A. Bellinger <nab@linux-iscsi.org>
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由 Nicholas Bellinger 提交于
This patch fixes a bug in the assignment of cmd->t_task.t_task_lba with WRITE_SAME_16 to correctly use get_unaligned_be64() for the 64-bit LBA. Reported-by: NChris Greiveldinger <chris.greiveldinger@rnanetworks.com> Signed-off-by: NNicholas A. Bellinger <nab@linux-iscsi.org>
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由 Andy Grover 提交于
This patch contains the squashed version of second round of target core cleanups and simplifications and Andy and Co. It also contains a handful of fixes to address bugs the original series and other minor cleanups. Here is the condensed shortlog: target: Remove unneeded casts to void* target: Rename get_lun_for_{cmd,tmr} to lookup_{cmd,tmr}_lun target: Make t_task a member of se_cmd, not a pointer target: Handle functions returning "-2" target: Use cmd->se_dev over cmd->se_lun->lun_se_dev target: Embed qr in struct se_cmd target: Replace embedded struct se_queue_req with a list_head target: Rename list_heads that are nodes in struct se_cmd to "*_node" target: Fold transport_device_setup_cmd() into lookup_{tmr,cmd}_lun() target: Make t_mem_list and t_mem_list_bidi members of t_task target: Add comment & cleanup transport_map_sg_to_mem() target: Remove unneeded checks in transport_free_pages() (Roland: Fix se_queue_req removal leftovers OOPs) (nab: Fix transport_lookup_tmr_lun failure case) (nab: Fix list_empty(&cmd->t_task.t_mem_bidi_list) inversion bugs) Signed-off-by: NAndy Grover <agrover@redhat.com> Signed-off-by: NRoland Dreier <roland@purestorage.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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由 Roland Dreier 提交于
The code in transport_add_device_to_core_hba() really intends to make sure that neither inquiry_prod nor inquiry_rev is NULL. Signed-off-by: NRoland Dreier <roland@purestorage.com> Signed-off-by: NNicholas A. Bellinger <nab@linux-iscsi.org>
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由 Andy Grover 提交于
This patch contains the squashed version of a number of cleanups and minor fixes from Andy's initial series (round 1) for target core this past spring. The condensed log looks like: target: use errno values instead of returning -1 for everything target: Rename transport_calc_sg_num to transport_init_task_sg target: Fix leak in error path in transport_init_task_sg target/pscsi: Remove pscsi_get_sh() usage target: Make two runtime checks into WARN_ONs target: Remove hba queue depth and convert to spin_lock_irq usage target: dev->dev_status_queue_obj is unused target: Make struct se_queue_req.cmd type struct se_cmd * target: Remove __transport_get_qr_from_queue() target: Rename se_dev->g_se_dev_list to se_dev_node target: Remove struct se_global target: Simplify scsi mib index table code target: Make dev_queue_obj a member of se_device instead of a pointer target: remove extraneous returns at end of void functions target: Ensure transport_dump_vpd_ident_type returns null-terminated str target: Function pointers don't need to use '&' to be assigned target: Fix comment in __transport_execute_tasks() target: Misc style cleanups target: rename struct pr_reservation_template to pr_reservation target: Remove #defines that just perform indirection target: Inline transport_get_task_from_execute_queue() target: Minor header comment fixes Signed-off-by: NAndy Grover <agrover@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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