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path: root/drivers/infiniband/ulp
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2006-09-14IPoIB: Retry failed send-only multicast group joinsEli Cohen
When a send-only multicast group join fails, mcast->query must be set to NULL. Otherwise, IPoIB will never retry the join and the multicast group will never be reachable. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-14IB/srp: Don't schedule reconnect from srpIshai Rabinovitz
If there is a problem in the connection, the SCSI mid-layer will eventually call srp_reset_host(), which will call srp_reconnect(), so we do not need to schedule a call to srp_reconnect_work() from srp_completion(). Removing this prevents srp_reset_host() from failing if a reconnect scheduled from srp_completion() is already in progress, which in turn was causing crashes as both SCSI midlayer and srp_reconnect() were cancelling commands. Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> 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>
2006-08-06Merge ../linux-2.6James Bottomley
Conflicts: arch/ia64/hp/sim/simscsi.c Stylistic differences in two separate fixes for buffer->request_buffer problem. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-08-03IB/ipoib: Remove broken link from Kconfig and documentationOr Gerlitz
Remove references to the IPoIB IETF working group as it has been closed. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-08-03IB/srp: Work around data corruption bug on Mellanox targetsIshai Rabinovitz
Data corruption has been seen with Mellanox SRP targets when FMRs create a memory region with I/O virtual address != 0. Add a workaround that disables FMR merging for Mellanox targets (OUI 0002c9). Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-08-03IB/srp: Fix crash in srp_reconnect_targetIshai Rabinovitz
Protect against srp_reset_device() clearing the req_queue while srp_reconnect_target() is in progress (note that state change at the top of srp_reconnect_target() is not sufficient for this since srp_reset_device() ignores the state). Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.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>
2006-07-24IB/ipoib: Fix packet loss after hardware address updateMichael S. Tsirkin
The neighbour ha field may get updated without destroying the neighbour. In this case, the ha field gets out of sync with the address handle stored in ipoib_neigh->ah, with the result that the ah field would point to an incorrect path, resulting in all packets being lost. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-07-24IB/ipoib: Fix oops with ipoib_debug_mcast setOr Gerlitz
Need to set mcast->ah before debug code dereferences it. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.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>
2006-07-14[PATCH] srp: fix fmr error handlingVu Pham
srp_unmap_data assumes req->fmr is NULL if the request is not mapped, so we must clean it out in case of an error. Signed-off-by: Vu Pham <vu@mellanox.com> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: 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>
2006-06-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: Remove obsolete #include <linux/config.h> remove obsolete swsusp_encrypt arch/arm26/Kconfig typos Documentation/IPMI typos Kconfig: Typos in net/sched/Kconfig v9fs: do not include linux/version.h Documentation/DocBook/mtdnand.tmpl: typo fixes typo fixes: specfic -> specific typo fixes in Documentation/networking/pktgen.txt typo fixes: occuring -> occurring typo fixes: infomation -> information typo fixes: disadvantadge -> disadvantage typo fixes: aquire -> acquire typo fixes: mecanism -> mechanism typo fixes: bandwith -> bandwidth fix a typo in the RTC_CLASS help text smb is no longer maintained Manually merged trivial conflict in arch/um/kernel/vmlinux.lds.S
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>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
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>
2006-06-26[PATCH] drivers: use list_move()Akinobu Mita
This patch converts the combination of list_del(A) and list_add(A, B) to list_move(A, B) under drivers/. Acked-by: Corey Minyard <minyard@mvista.com> Cc: Ben Collins <bcollins@debian.org> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Alasdair Kergon <dm-devel@redhat.com> Cc: Gerd Knorr <kraxel@bytesex.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Frank Pavlic <fpavlic@de.ibm.com> Acked-by: Matthew Wilcox <matthew@wil.cx> Cc: Andrew Vasquez <linux-driver@qlogic.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Greg Kroah-Hartman <greg@kroah.com> Signed-off-by: Akinobu Mita <mita@miraclelinux.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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>
2006-06-19Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (46 commits) IB/uverbs: Don't serialize with ib_uverbs_idr_mutex IB/mthca: Make all device methods truly reentrant IB/mthca: Fix memory leak on modify_qp error paths IB/uverbs: Factor out common idr code IB/uverbs: Don't decrement usecnt on error paths IB/uverbs: Release lock on error path IB/cm: Use address handle helpers IB/sa: Add ib_init_ah_from_path() IB: Add ib_init_ah_from_wc() IB/ucm: Get rid of duplicate P_Key parameter IB/srp: Factor out common request reset code IB/srp: Support SRP rev. 10 targets [SCSI] srp.h: Add I/O Class values IB/fmr: Use device's max_map_map_per_fmr attribute in FMR pool. IB/mthca: Fill in max_map_per_fmr device attribute IB/ipath: Add client reregister event generation IB/mthca: Add client reregister event generation IB: Move struct port_info from ipath to <rdma/ib_smi.h> IPoIB: Handle client reregister events IB: Add client reregister event type ...
2006-06-17[NET]: Add netif_tx_lockHerbert Xu
Various drivers use xmit_lock internally to synchronise with their transmission routines. They do so without setting xmit_lock_owner. This is fine as long as netpoll is not in use. With netpoll it is possible for deadlocks to occur if xmit_lock_owner isn't set. This is because if a printk occurs while xmit_lock is held and xmit_lock_owner is not set can cause netpoll to attempt to take xmit_lock recursively. While it is possible to resolve this by getting netpoll to use trylock, it is suboptimal because netpoll's sole objective is to maximise the chance of getting the printk out on the wire. So delaying or dropping the message is to be avoided as much as possible. So the only alternative is to always set xmit_lock_owner. The following patch does this by introducing the netif_tx_lock family of functions that take care of setting/unsetting xmit_lock_owner. I renamed xmit_lock to _xmit_lock to indicate that it should not be used directly. I didn't provide irq versions of the netif_tx_lock functions since xmit_lock is meant to be a BH-disabling lock. This is pretty much a straight text substitution except for a small bug fix in winbond. It currently uses netif_stop_queue/spin_unlock_wait to stop transmission. This is unsafe as an IRQ can potentially wake up the queue. So it is safer to use netif_tx_disable. The hamradio bits used spin_lock_irq but it is unnecessary as xmit_lock must never be taken in an IRQ handler. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-17IB/srp: Factor out common request reset codeIshai Rabinovitz
Misc cleanups in ib_srp: 1) I think that it is more efficient to move the req entries from req_list to free_list in srp_reconnect_target (rather than rebuild the free_list). (In any case this code is shorter). 2) This allows us to reuse code in srp_reset_device and srp_reconnect_target and call a new function srp_reset_req. Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IB/srp: Support SRP rev. 10 targetsRamachandra K
There has been a change in the format of port identifiers between revision 10 of the SRP specification and the current revision 16A. Revision 10 specifies port identifier format as lower 8 bytes : GUID upper 8 bytes : Extension Whereas revision 16A specifies it as lower 8 bytes : Extension upper 8 bytes : GUID There are older targets (e.g. SilverStorm Virtual Fibre Channel Bridge) which conform to revision 10 of the SRP specification. The I/O class of revision 10 is 0xFF00 and the I/O class of revision 16A is 0x0100. For supporting older targets, this patch: 1) Adds a new optional target creation parameter "io_class". Default value of io_class is 0x0100 (i.e. revision 16A) 2) Uses the correct port identifier format for targets with IO class of 0xFF00 (i.e. conforming to revision 10) Signed-off-by: Ramachandra K <rkuchimanchi@silverstorm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IPoIB: Handle client reregister eventsLeonid Arsh
Handle client reregister events by treating them just like LID or SM changes -- flush all cached paths and rejoin multicast groups. Signed-off-by: Leonid Arsh <leonida@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IPoIB: Fix kernel unaligned access on ia64Jack Morgenstein
Fix misaligned access faults on ia64: never cast a misaligned neighbour->ha + 4 pointer to union ib_gid type; pass a void * pointer instead. The memcpy was being optimized to use full word accesses because the compiler thought that union ib_gid is always aligned. The cast in IPOIB_GID_ARG is safe, since it is fixed to access each byte separately. Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IPoIB: Avoid using stale last_send counter when reaping AHsRoland Dreier
The comparisons of priv->tx_tail to ah->last_send in ipoib_free_ah() and ipoib_post_receive() are slightly unsafe, because priv->tx_lock is not held and hence a stale value of ah->last_send might be used, which would lead to freeing an AH before the driver was really done with it. The simple way to fix this is to the optimization of early free from ipoib_free_ah() and unconditionally queue AHs for reaping, and then take priv->tx_lock in __ipoib_reap_ah(). Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IB/srp: Get rid of "Target has req_lim 0" messagesRoland Dreier
It's perfectly valid for a connection to an SRP target to have a request limit of 0, so get rid of the message about it, which can spam kernel logs even with printk_ratelimit(). Keep a count of such events in a "zero_req_lim" SCSI host attribute instead, so someone who cares can look at the statistics. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IB/srp: Handle DREQ events from CMIshai Rabinovitz
Handle IB_CM_DREQ_ERROR and IB_CM_DREQ_RECEIVED events from the CM, instead of just printing "Unhandled CM event". In the case of DREQ_ERROR, just ignore the event -- a TIMEWAIT_EXIT will be generated also. For DREQ_RECEIVED, send a DREP in response to shut the connection down cleanly. Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IB/srp: Allow sg_tablesize to be adjustedVu Pham
Make the sg_tablesize used by SRP adjustable at module load time via a module parameter. Calculate the corresponding IU length required to support this. Signed-off-by: Vu Pham <vu@mellanox.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IB/srp: Allow cmd_per_lun to be set per target portVu Pham
Allow userspace to throttle traffic on a given connection to a target port by adding "max_cmd_per_lun=xyz" to lower the cmd_per_lun value set for that scsi_host. Signed-off-by: Vu Pham <vu@mellanox.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IB/srp: Clean up loop in srp_remove_one()Ishai Rabinovitz
Interrupts will always be enabled in srp_remove_one(), so spin_lock_irq() can be used instead of spin_lock_irqsave(). Also, the loop takes target->scsi_host->host_lock, so target->state can just be set to SRP_TARGET_REMOVED witout testing the old value. Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IB/srp: Change target_mutex to a spinlockMatthew Wilcox
The SRP driver never sleeps while holding target_mutex, and it's just used to protect some simple list operations, so hold times will be short. So just convert it to a spinlock, which is smaller and faster. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IB/srp: Get rid of unneeded use of list_for_each_entry_safe()Matthew Wilcox
list_for_each_entry_safe() is used in one place where the list isn't modified. So just change it to list_for_each_entry(). Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IB/srp: Use SCAN_WILD_CARD from SCSI headersMatthew Wilcox
SCAN_WILD_CARD is indeed available from <scsi/scsi.h>, which is already included. So get rid of private hack. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-17IB/srp: Use FMRs to map gather/scatter listsRoland Dreier
Create an SRP FMR pool on HCAs that support FMRs, and use FMRs to map gather/scatter lists that have more than one entry into a single memory region that appears virtually contiguous to the SRP target (which is the RDMA initiator). This patch bails out on FMR mapping for SCSI commands where the gather/scatter list cannot be mapped into a single FMR because there are sub-page-sized entries in middle of the list. An unaligned start or end of the list is OK. Based on a patch by Vu Pham <vuhuong@mellanox.com>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-05IPoIB: Fix AH leak at interface downEli Cohen
When ipoib_stop() is called it first calls netif_stop_queue() to stop the kernel from passing more packets to the network driver. However, the completion handler may call netif_wake_queue() re-enabling packet transfer. This might result in leaks (we see AH leaks which we think can be attributed to this bug) as new packets get posted while the interface is going down. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Michael Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-05-17IB/srp: Complete correct SCSI commands on device resetIshai Rabinovitz
When flushing out queued commands after a successful device reset, make sure that SRP completes the right commands, instead of calling scsi_done on the command passed into the device reset handler over and over. Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-05-17IB/srp: Get rid of extra scsi_host_put()s if reconnection failsRoland Dreier
If a reconnection attempt fails, then SRP does two scsi_host_put()s. This is a historical relic from an earlier version of the driver that took a reference on the scsi_host before trying to reconnect, so get rid of the extra scsi_host_put(). Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-05-17IB/srp: Don't wait for disconnection if sending DREQ failsRoland Dreier
Sending a DREQ may fail, for example because the remote target has already broken the connection. If so, then SRP should not wait for the disconnection to complete, because it never will. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-05-09IPoIB: Free child interfaces properlyRoland Dreier
When deleting a child interface with a non-default P_Key via /sys/class/net/ibX/delete_child, the interface must be freed with free_netdev() (rather than kfree() on the private data). Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-05-09IB/srp: Fix tracking of pending requests during error handlingRoland Dreier
If a SCSI abort completes, or the command completes successfully, then the driver must remove the command from its queue of pending commands. Similarly, if a device reset succeeds, then all commands queued for the given device must be removed from the queue. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-04-19IB/srp: Remove request from list when SCSI abort succeedsRoland Dreier
If a SCSI abort succeeds, then the aborted request should to be removed from the list of pending requests. This fixes list corruption after an abort occurs. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-04-10IPoIB: Use spin_lock_irq() instead of spin_lock_irqsave()Roland Dreier
We know ipoib_flush_paths() is called from plain process context with interrupts enabled, since it does wait_for_completion(). So there's no need to use spin_lock_irqsave() -- spin_lock_irq() is fine. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-04-10IPoIB: Close race in ipoib_flush_paths()Eli Cohen
ib_sa_cancel_query() must be called with priv->lock held since a completion might arrive and set path->query to NULL. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-04-10IPoIB: Make send and receive queue sizes tunableShirley Ma
Make IPoIB's send and receive queue sizes tunable via module parameters ("send_queue_size" and "recv_queue_size"). This allows the queue sizes to be enlarged to fix disastrously bad performance on some platforms and workloads, without bloating memory usage when large queues aren't needed. Signed-off-by: Shirley Ma <xma@us.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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