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path: root/drivers/infiniband/ulp/iser
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2007-05-08header cleaning: don't include smp_lock.h when not usedRandy Dunlap
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07Merge branch 'for-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband: IPoIB: Convert to NAPI IB: Return "maybe missed event" hint from ib_req_notify_cq() IB: Add CQ comp_vector support IB/ipath: Fix a race condition when generating ACKs IB/ipath: Fix two more spin lock problems IB/fmr_pool: Add prefix to all printks IB/srp: Set proc_name IB/srp: Add orig_dgid sysfs attribute to scsi_host IPoIB/cm: Don't crash if remote side uses one QP for both directions RDMA/cxgb3: Support for new abort logic RDMA/cxgb3: Initialize cpu_idx field in cpl_close_listserv_req message RDMA/cxgb3: Fail qp creation if the requested max_inline is too large RDMA/cxgb3: Fix TERM codes IPoIB/cm: Fix error handling in ipoib_cm_dev_open() IB/ipath: Don't corrupt pending mmap list when unmapped objects are freed IB/mthca: Work around kernel QP starvation IB/ipath: Don't put QP in timeout queue if waiting to send IB/ipath: Don't call spin_lock_irq() from interrupt context
2007-05-06IB: Add CQ comp_vector supportMichael S. Tsirkin
Add a num_comp_vectors member to struct ib_device and extend ib_create_cq() to pass in a comp_vector parameter -- this parallels the userspace libibverbs API. Update all hardware drivers to set num_comp_vectors to 1 and have all ULPs pass 0 for the comp_vector value. Pass the value of num_comp_vectors to userspace rather than hard-coding a value of 1. We want multiple CQ event vector support (via MSI-X or similar for adapters that can generate multiple interrupts), but it's not clear how many vectors we want, or how we want to deal with policy issues such as how to decide which vector to use or how to set up interrupt affinity. This patch is useful for experimenting, since no core changes will be necessary when updating a driver to support multiple vectors, and we know that we want to make at least these changes anyway. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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 ...
2007-04-05IB/iser: Don't defer connection failure notification to workqueueErez Zilber
When a connection is terminated asynchronously from the iSCSI layer's perspective, iSER needs to notify the iSCSI layer that the connection has failed. This is done using a workqueue (switched to from the iSER tasklet context). Meanwhile, the connection object (that holds the work struct) is released. If the workqueue function wasn't called yet, it will be called later with a NULL pointer, which will crash the kernel. The context switch (tasklet to workqueue) is not required, and everything can be done from the iSER tasklet. This eliminates the NULL work struct bug (and simplifies the code). Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-03-26IB/iser: Handle aborting a command after it is sentErez Zilber
The SCSI midlayer may abort a command that was already sent. If the initiator is still trying to send the command (or data-out PDUs for that command), the QP may time out after the midlayer times out. Therefore, when aborting the command, iSER may still have references for the command's buffers. When sending these PDUs, the sends will complete with an error and their resources will be released then. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-03-11[SCSI] iscsi: rename DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTHMike Christie
This patch renames DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH to avoid confusion with the drivers default values (DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH is the iscsi RFC specific default). Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-02-09[PATCH] iscsi endianness annotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-01-07IB/iser: Return error code when PDUs may not be sentErez Zilber
iSER limits the number of outstanding PDUs to send. When this threshold is reached, it should return an error code (-ENOBUFS) instead of setting the suspend_tx bit (which should be used only by libiscsi). Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-12-12IB/iser: Use the new verbs DMA mapping functionsRalph Campbell
Convert iSER to use the new verbs DMA mapping functions for kernel verbs consumers. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-12-12IB/iser: Remove unused "write-only" variablesRoland Dreier
Remove variables that are set but then never looked at in the iSER initiator. These cleanups came from David Binderman's list of "set but never used" warnings from icc. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-12-08[PATCH] LOG2: Implement a general integer log2 facility in the kernelDavid Howells
This facility provides three entry points: ilog2() Log base 2 of unsigned long ilog2_u32() Log base 2 of u32 ilog2_u64() Log base 2 of u64 These facilities can either be used inside functions on dynamic data: int do_something(long q) { ...; y = ilog2(x) ...; } Or can be used to statically initialise global variables with constant values: unsigned n = ilog2(27); When performing static initialisation, the compiler will report "error: initializer element is not constant" if asked to take a log of zero or of something not reducible to a constant. They treat negative numbers as unsigned. When not dealing with a constant, they fall back to using fls() which permits them to use arch-specific log calculation instructions - such as BSR on x86/x86_64 or SCAN on FRV - if available. [akpm@osdl.org: MMC fix] Signed-off-by: David Howells <dhowells@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: David Howells <dhowells@redhat.com> Cc: Wojtek Kaniewski <wojtekka@toxygen.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-05Merge branch 'master' of ↵David Howells
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/ata/libata-scsi.c include/linux/libata.h Futher merge of Linus's head and compilation fixups. Signed-Off-By: David Howells <dhowells@redhat.com>
2006-12-05Merge branch 'master' of ↵David Howells
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/infiniband/core/iwcm.c drivers/net/chelsio/cxgb2.c drivers/net/wireless/bcm43xx/bcm43xx_main.c drivers/net/wireless/prism54/islpci_eth.c drivers/usb/core/hub.h drivers/usb/input/hid-core.c net/core/netpoll.c Fix up merge failures with Linus's head and fix new compilation failures. Signed-Off-By: David Howells <dhowells@redhat.com>
2006-12-04[PATCH] severing skbuff.h -> highmem.hAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-11-29IB: Convert kmem_cache_t -> struct kmem_cacheRoland Dreier
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-22WorkStruct: make allyesconfigDavid Howells
Fix up for make allyesconfig. Signed-Off-By: David Howells <dhowells@redhat.com>
2006-10-30IB/iser: Start connection after enabling iSERErez Zilber
When a connection is started (a new connection or a recovered one), iSER should prepare its resources for full-featured mode and only then notify the iSCSI layer that it is ready to start queueing commands. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/iser: Fix the description of iSER in KconfigErez Zilber
Fix the description of iSER in Kconfig. It is not accurate. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/iser: DMA unmap unaligned for RDMA data before touching itErez Zilber
iSER uses the DMA mapping api to map the page holding the SCSI command data to the HCA DMA address space. When the command data is not aligned for RDMA, the data is copied to/from an allocated buffer which in turn is used for executing this command. The pages associated with the command must be unmapped before being touched. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/iser: Have iSER data transaction object point to iSER connErez Zilber
iSER uses a data transaction object (struct iser_dto) as part of its IB data descriptors (struct iser_desc) management. It also uses a hierarchy of connection structures pointing to each other. A DTO may exist even after the iscsi_iser connection pointed by it is destroyed (eg one that is bound to a post receive buffer which was flushed by the IB HW). Hence DTOs need point to the lowest connection, which is struct iser_conn. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-23Merge mulgrave-w:git/scsi-misc-2.6James Bottomley
Conflicts: drivers/scsi/iscsi_tcp.c drivers/scsi/iscsi_tcp.h Pretty horrible merge between crypto hash consolidation and crypto_digest_...->crypto_hash_... conversion Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-09-22IB/iser: INFINIBAND_ISER depends on INETRoland Dreier
iSER won't build without CONFIG_INET enabled, so make Kconfig reflect that. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/iser: Do not use FMR for a single dma entry sgErez Zilber
Fast Memory Registration (fmr) is used to register for rdma an sg whose elements are not linearly sequential after dma mapping. The IB verbs layer provides an "all dma memory MR (memory region)" which can be used for RDMA-ing a dma linearly sequential buffer. Change the code to use the dma mr instead of doing fmr when dma mapping produces a single dma entry sg. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/iser: fix some debug printsErez Zilber
fix and add some debug prints related to iser handling of memory for rdma. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/iser: make FMR "page size" be 4K and not PAGE_SIZEErez Zilber
As iser is able to use at most one rdma operation for the execution of a scsi command, and registration of the sg associated with scsi command has its restrictions, the code checks if an sg is "aligned for rdma". Alignment for rdma is measured in "fmr page" units whose possible resolutions are different between HCAs and can be smaller, equal or bigger to the system page size. When the system page size is bigger than 4KB (eg the default with ia64 kernels) there a bigger chance that an sg would be aligned for rdma if the fmr page size is 4KB. Change the code to create FMR whose pages are of size 4KB and to take that into account when processing the sg. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/iser: Limit the max size of a scsi commandErez Zilber
Currently, the data length of a command coming down from scsi-ml is limited only by the size of its sg list (sg_tablesize). The max data length may be different for different page size values. By setting max_sectors, we limit the data length to max_sectors*512 bytes. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/iser: fix a check of SG alignment for RDMAErez Zilber
dma mapping may include a "compaction" of the sg associated with scsi command. Hence, the size of the maximal prefix of the SG which is aligned for rdma must be compared against the length of the dma mapped sg (mem->dma_nents) and not against the size of it before it was mapped (mem->size). Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-02[SCSI] libiscsi, iscsi_tcp, iscsi_iser: check that burst lengths are valid.Mike Christie
iSCSI RFC states that the first burst length must be smaller than the max burst length. We currently assume targets will be good, but that may not be the case, so this patch adds a check. This patch also moves the unsol data out offset to the lib so the LLDs do not have to track it. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-07-28[SCSI] iscsi bugfixes: fix oops when iser is flushing ioMike Christie
When we enter recovery and flush the running commands we cannot freee the connection before flushing the commands. Some commands may have a reference to the connection that needs to be released before. iscsi_stop was forcing the term and suspend too early and was causing a oops in iser, so this patch removes those callbacks all together and allows the LLD to handle that detail. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-07-14[PATCH] fmr pool: remove unnecessary pointer dereferenceMichael S. Tsirkin
ib_fmr_pool_map_phys gets the virtual address by pointer but never writes there, and users (e.g. srp) seem to assume this and ignore the value returned. This patch cleans up the API to get the VA by value, and updates all users. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Acked-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03Merge ../scsi-misc-2.6James Bottomley
Conflicts: drivers/scsi/nsp32.c drivers/scsi/pcmcia/nsp_cs.c Removal of randomness flag conflicts with SA_ -> IRQF_ global replacement. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-06-30[PATCH] infiniband: devfs fixAndrew Morton
Remove devfs leftovers. Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-29[SCSI] iscsi: convert iser to new set/get param fnsMike Christie
Convert iser to libiscsi get/set param functions. Fix bugs in it returning old error return values and have it expose exp_statsn. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-06-22IB/iser: iSER Kconfig and MakefileOr Gerlitz
Kconfig and Makefile for iSER. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-22IB/iser: iSER handling of memory for RDMAOr Gerlitz
This file contains the processing carried over an SG list associated with a SCSI command such that it can be registered with the IB verbs. The registration produces a network virtual address (VA) and a remote access key (RKEY or STAG in iSER spec notation) which are used by the target for its RDMA operation. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-22IB/iser: iSER RDMA CM (CMA) and IB verbs interactionOr Gerlitz
This file contains the low level interaction with the RDMA CM and the IB verbs, where iSER is consumer of both. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-22IB/iser: iSER initiator iSCSI PDU and TX/RXOr Gerlitz
This file contains the iSER initiator processing of iSCSI PDUs - controls, commands and data-outs along with processing of TX and RX completions. It interacts with the lower level iser code doing the memory registration and and the cma and verbs calls. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-22IB/iser: iSCSI iSER transport provider high level codeOr Gerlitz
This file contains the code that registeres with the iscsi transport manager and with the SCSI Mid Layer, where much of the provided functions to iSCSI and SCSI are implemented in libiscsi. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-22IB/iser: iSCSI iSER transport provider header fileOr Gerlitz
iSER (iSCSI Extensions for RDMA) transport provider driver for the iSCSI initiator, whose other parts (under drivers/scsi) are scsi_transport_iscsi - the transport management module, iscsi_tcp - the TCP transport provider module and libiscsi - a kernel library (module) implementing functionality needed by both TCP and iSER transports. iSER is both a provider of the iSCSI transport api and a SCSI low level driver. This file contains internal data structures and non static service functions. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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