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path: root/drivers/infiniband/ulp
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2008-04-23IPoIB: Handle 4K IB MTU for UD (datagram) modeShirley Ma
This patch enables IPoIB to use 4K UD messages (when the underlying device and fabrics support a 4K MTU) by using two scatter buffers when PAGE_SIZE is less than or equal to thhe HCA IB MTU size. The first buffer is for IPoIB header + GRH header, and the second buffer is the IPoIB payload, which is 4K-4. Signed-off-by: Shirley Ma <xma@us.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-19SCSI: convert struct class_device to struct deviceTony Jones
It's big, but there doesn't seem to be a way to split it up smaller... Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Roland Dreier <rolandd@cisco.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-19IB: rename "dev" to "srp_dev" in srp_host structureGreg Kroah-Hartman
This sets us up to be able to convert the srp_host to use a struct device instead of a class_device. Based on a original patch from Tony Jones, but split up into this piece by Greg. Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Reviewed-by: Roland Dreier <rolandd@cisco.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-16IB/iser: Don't change itt endiannessErez Zilber
The itt field in struct iscsi_data is not defined with any particular endianness. open-iscsi should use it as-is without byte-swapping it. This fixes sparse warnings coming from doing ntohl(hdr->itt). Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IPoIB: Handle case when P_Key is deleted and re-added at same indexRoland Dreier
If a P_Key is deleted and then re-added at the same index, then IPoIB gets confused because __ipoib_ib_dev_flush() only checks whether the index is the same without checking whether the P_Key was present, so the interface is stopped when the P_Key is deleted, but the event when the P_Key is re-added gets ignored and the interface never gets restarted. Also, switch to using ib_find_pkey() instead of ib_find_cached_pkey() everywhere in IPoIB, since none of the places that look for P_Keys are in a fast path or in non-sleeping context, and in general we want to kill off the whole caching infrastructure eventually. This also fixes consistency problems caused because some IPoIB queries were cached and some were uncached during the window where the cache was not updated. Thanks to Venkata Subramonyam <vsubramo@cisco.com> for debugging this problem and testing this fix. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IB/iser: Release connection resources on RDMA_CM_EVENT_DEVICE_REMOVAL eventErez Zilber
When a RDMA_CM_EVENT_DEVICE_REMOVAL event is raised, iSER should release the connection resources. This is necessary when the IB HCA module is unloaded while open-iscsi is still running. Currently, iSER just BUG()s. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IPoIB: Support modifying IPoIB CQ event moderationEli Cohen
This can be used to tune at run time the parameters controlling the event (interrupt) generation rate and thus reduce the overhead incurred by handling interrupts resulting in better throughput. Since IPoIB uses a single CQ for both RX and TX, RX is chosen to dictate configuration for both RX and TX. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IPoIB: Add basic ethtool supportEli Cohen
Just add the infrastructure so we can add functionality later. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IPoIB: Add LSO supportEli Cohen
For HCAs that support TCP segmentation offload (IB_DEVICE_UD_TSO), set NETIF_F_TSO and use HW LSO to offload TCP segmentation. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IB: Use shorter list_splice_init() for brevityRobert P. J. Day
Convert list_splice() + INIT_LIST_HEAD() to the equivalent list_splice_init() Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IB/srp: Enforce protocol limit on srp_sg_tablesizeDavid Dillow
The current SRP initiator will allow unlimited s/g entries in the indirect descriptors lists, but the entry count field in the SRP_CMD request is 8 bits, so setting srp_sg_tablesize too large will open the possibility of wrapping the count and generating invalid requests. Clamp srp_sg_tablesize to the protocol limits to prevent surprises. Reported by Martin W. Schlining III <mschlining@datadirectnet.com>. Signed-off-by: David Dillow <dillowda@ornl.gov> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IPoIB: Use checksum offload support if availableEli Cohen
For HCAs that support checksum offload (ie that set IB_DEVICE_UD_IP_CSUM in the device capabilities flags), have IPoIB set NETIF_F_IP_CSUM and use the HCA to generate and verify IP checksums. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-03-12IPoIB: Allocate priv->tx_ring with vmalloc()Roland Dreier
Commit 7143740d ("IPoIB: Add send gather support") made struct ipoib_tx_buf significantly larger, since the mapping member changed from a single u64 to an array with MAX_SKB_FRAGS + 1 entries. This means that allocating tx_rings with kzalloc() may fail because there is not enough contiguous memory for the new, much bigger size. Fix this regression by allocating the rings with vmalloc() instead. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-03-11IPoIB/cm: Set tx_wr.num_sge in connected mode post_send()Roland Dreier
Commit 7143740d ("IPoIB: Add send gather support") made it possible for tx_wr.num_sge to be != 1 -- this happens if send gather support is enabled. However, the code in the connected mode post_send() function assumes the old invariant, namely that tx_wr.num_sge is always 1. Fix this by explicitly setting tx_wr.num_sge to 1 in the CM post_send(). Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-03-11IPoIB: Don't drop multicast sends when they can be queuedOr Gerlitz
When set_multicast_list() is called the multicast task is restarted and the IPOIB_MCAST_STARTED bit is cleared. As a result for some window of time, multicast packets are not transmitted nor queued but rather dropped by ipoib_mcast_send(). These dropped packets are painful in two cases: - bonding fail-over which both calls set_multicast_list() on the new active slave and sends Gratuitous ARP through that slave. - IP_DROP_MEMBERSHIP code which both calls set_multicast_list() on the device and issues IGMP leave. In both these cases, depending on the scheduling of the IPoIB multicast task, the packets would be dropped. As a result, in the bonding case, the failover would not be detected by the peers until their neighbour is renewed the neighbour (which takes a few tens of seconds). In the IGMP case, the IP router doesn't get an IGMP leave and would only learn on that from further probes on the group (also a delay of at least a few tens of seconds). Fix this by allowing transmission (or queuing) depending on the IPOIB_FLAG_OPER_UP flag instead of the IPOIB_MCAST_STARTED flag. Signed-off-by: Olga Shern <olgas@voltaire.com> Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-03-10IB/iser: Handle iser_device allocation error gracefullyArne Redlich
"iser_device" allocation failure is "handled" with a BUG_ON() right before dereferencing the NULL-pointer - fix this! Signed-off-by: Arne Redlich <arne.redlich@xiranet.com> Signed-off-by: Erez Zilber <erezz@voltaire.com>
2008-03-10IB/iser: Fix list iteration bugArne Redlich
The iteration through the list of "iser_device"s during device lookup/creation is broken -- it might result in an infinite loop if more than one HCA is used with iSER. Fix this by using list_for_each_entry() instead of the open-coded flawed list iteration code. Signed-off-by: Arne Redlich <arne.redlich@xiranet.com> Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-02-19IPoIB/cm: Fix ipoib_cm_dev_stop() cleanup when drain times outPradeep Satyanarayana
Commit efcd9971 ("IPoIB/cm: Factor out ipoib_cm_free_rx_reap_list()") introduced a bug in ipoib_cm_dev_stop() when the receive drain times out. In that case, the function moves all the pending rx stuff into a private list but then calls ipoib_cm_free_rx_reap_list(), which handles a different list. Fix this by moving everything to the rx_reap_list that will actually get freed up. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=906>. Signed-off-by: Pradeep Satyanarayana <pradeeps@linux.vnet.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-02-14IPoIB: Remove unused struct ipoib_cm_tx.ibwc memberEli Cohen
struct ipoib_cm_tx.ibwc is unused since commit 1b524963 ("IPoIB/cm: Use common CQ for CM send completions"), so remove it. Signed-off-by: Eli Cohen <eli@mellanox.co.il>
2008-02-14IPoIB: On P_Key change event, reset state properlyJack Morgenstein
In P_Key event handling, if the old P_Key is no longer available, the driver must call ipoib_ib_dev_stop() -- just as it does when the P_Key is still available (see procedure __ipoib_ib_dev_flush()). When a P_Key becomes available, the driver will perform ipoib_open(), which assumes that the QP is in RESET, the cm_id has been destroyed/deleted, etc. If ipoib_ib_dev_stop() is not called as described above, then these assumptions will be false, and the attempt to bring the interface up will fail. Found by Mellanox QA. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-02-08IPoIB: Add send gather supportEli Cohen
This patch acts as a preparation for using checksum offload for IB devices capable of inserting/verifying checksum in IP packets. The patch does not actaully turn on NETIF_F_SG - we defer that to the patches adding checksum offload capabilities. We only add support for send gathers for datagram mode, since existing HW does not support checksum offload on connected QPs. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-02-08IPoIB: Add high DMA feature flagEli Cohen
All current InfiniBand devices can handle all DMA addresses, and it's hard to imagine anyone would be silly enough to build a new device that couldn't. Therefore, enable the NETIF_F_HIGHDMA feature for IPoIB. This has no effect for no, but is needed when we enable gather/scatter support and checksum stateless offloads. Signed-off-by: Eli Cohen <eli@mellnaox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-02-04IB/srp: Retry stale connectionsDavid Dillow
When a host just goes away (crash, power loss, etc.) without tearing down its IB connections, it can get stale connection errors when it tries to reconnect to targets upon rebooting. Retrying the connection a few times will prevent sysadmins from playing the "which disk(s) went missing?" game. This would have made things slightly quicker when tracking down some of the recent bugs, but it also helps quite a bit when you've got a large number of targets hanging off a wedged server. Signed-off-by: David Dillow <dillowda@ornl.gov> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-02-04IPoIB: Remove a misleading debug printOr Gerlitz
Commit 732a2170 ("IB/ipoib: Bound the net device to the ipoib_neigh structue") left a misleading debug print (n->dev would be a bond device only if boding is used). Clean it up. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-02-04IPoIB: Handle bonding failover race for connected neighbours tooOr Gerlitz
Move up the code that checks for a situation where the remote GID stored in the ipoib_neigh is different than the one present in the neighbour (handle gratuitous ARP) or that a bonding fail over has happened but the neighbour still has a pointer to an ipoib_neigh created by a different device than the current slave. This will cause the driver to apply the check also for connected mode neighbours. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-30[SCSI] remove use_sg_chainingJames Bottomley
With the sg table code, every SCSI driver is now either chain capable or broken (or has sg_tablesize set so chaining is never activated), so there's no need to have a check in the host template. Also tidy up the code by moving the scatterlist size defines into the SCSI includes and permit the last entry of the scatterlist pools not to be a power of two. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (200 commits) [SCSI] usbstorage: use last_sector_bug flag universally [SCSI] libsas: abstract STP task status into a function [SCSI] ultrastor: clean up inline asm warnings [SCSI] aic7xxx: fix firmware build [SCSI] aacraid: fib context lock for management ioctls [SCSI] ch: remove forward declarations [SCSI] ch: fix device minor number management bug [SCSI] ch: handle class_device_create failure properly [SCSI] NCR5380: fix section mismatch [SCSI] sg: fix /proc/scsi/sg/devices when no SCSI devices [SCSI] IB/iSER: add logical unit reset support [SCSI] don't use __GFP_DMA for sense buffers if not required [SCSI] use dynamically allocated sense buffer [SCSI] scsi.h: add macro for enclosure bit of inquiry data [SCSI] sd: add fix for devices with last sector access problems [SCSI] fix pcmcia compile problem [SCSI] aacraid: add Voodoo Lite class of cards. [SCSI] aacraid: add new driver features flags [SCSI] qla2xxx: Update version number to 8.02.00-k7. [SCSI] qla2xxx: Issue correct MBC_INITIALIZE_FIRMWARE command. ...
2008-01-25IPoIB: Constify seq_operations function pointer tablesJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IPoIB: Remove redundant check of netif_queue_stopped() in xmit handlerKrishna Kumar
qdisc_run() now tests for queue_stopped() before calling __qdisc_run(), and the same check is done in every iteration of __qdisc_run(), so another check is not required in the driver xmit. This means that ipoib_start_xmit() no longer needs to test netif_queue_stopped(); the test was added to fix earlier kernels, where the networking stack did not guarantee that the xmit method of an LLTX driver would not be called after the queue was stopped, but current kernels do provide this guarantee. To validate, I put a debug in the TX_BUSY path which never hit with 64 threads running overnight exercising this code a few 100 million times. Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IB/iser: Add change_queue_depth methodErez Zilber
Add a .change_queue_depth handler to the scsi_host_template in the iSER driver. iscsi_change_queue_depth was added to iscsi_tcp in order to solve the problem of queue depth which was too high for some targets. It is also applicable for iSER. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IB/iser: Print information about unhandled RDMA CM eventsErez Zilber
Some RDMA CM events are not supported or not handled in iSER. This patch adds some info (printk) for the user about them. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IB/srp: Add identifying information to log messagesDavid Dillow
When you have multiple targets, it gets really confusing when you try to track down who did a reset when there is no identifying information in the log message, especially when the same extension ID is mapped through two different local IB ports. So, add an identifier that can be used to track back to which local IB port/remote target pair is the one having problems. Signed-off-by: David Dillow <dillowda@ornl.gov> Acked-by: Pete Wyckoff <pw@osc.edu> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IPoIB/CM: Enable SRQ support on HCAs that support fewer than 16 SG entriesPradeep Satyanarayana
Some HCAs (such as ehca2) support SRQ, but only support fewer than 16 SG entries for SRQs. Currently IPoIB/CM implicitly assumes all HCAs will support 16 SG entries for SRQs (to handle a 64K MTU with 4K pages). This patch removes that restriction by limiting the maximum MTU in connected mode to what the maximum number of SRQ SG entries allows. This patch addresses <https://bugs.openfabrics.org/show_bug.cgi?id=728> Signed-off-by: Pradeep Satyanarayana <pradeeps@linux.vnet.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IB/srp: Enable SG list chainingDavid Dillow
By default, the SCSI mid-layer seems to send down 512KB requests (sg_tablesize = 256), with some requests occasionally combined. By allowing the mid-layer to chain requests, we can easily grow to 1024KB or larger -- I've tested 4096KB I/O requests with no problems. I looked through the DMA paths on the hardware drivers to ensure they could take advantage of the SG chaining, and it seems that every one except ipath uses the system's DMA routines, which have been converted to handle chaining. ipath looks like it should be OK, but I have no way to test it. Signed-off-by: David Dillow <dillowda@ornl.gov> [ Tested on ipath. - Roland ] Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IB/srp: Respect target credit limitDavid Dillow
The current SRP initiator will send requests even if it has no credits available. The results of sending extra requests are vendor specific, but on some devices, overrunning credits will cost 85% of peak performance -- e.g. 100 MB/s vs 720 MB/s. Other devices may just drop the requests. This patch will tell the SCSI midlayer to queue requests if there are fewer than two credits remaining, and will not issue a task management request if there are no credits remaining. The mid-layer will retry the queued command once an outstanding command completes. The patch also removes the unlikely() in __srp_get_tx_iu(), as it is not at all unlikely to hit this limit under heavy load. Signed-off-by: David Dillow <dillowda@ornl.gov> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IPoIB: improve IPv4/IPv6 to IB mcast mapping functionsRolf Manderscheid
An IPoIB subnet on an IB fabric that spans multiple IB subnets can't use link-local scope in multicast GIDs. The existing routines that map IP/IPv6 multicast addresses into IB link-level addresses hard-code the scope to link-local, and they also leave the partition key field uninitialised. This patch adds a parameter (the link-level broadcast address) to the mapping routines, allowing them to initialise both the scope and the P_Key appropriately, and fixes up the call sites. The next step will be to add a way to configure the scope for an IPoIB interface. Signed-off-by: Rolf Manderscheid <rvm@obsidianresearch.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IB/iser: Typo fix (s/destory/destroy/)Oliver Pinter
Signed-off-by: Oliver Pinter <oliver.pntr@gmail.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IB/iser: update URLs of iSER docsErez Zilber
Signed-off-by: Erez Zilber <erezz@voltaire.com>
2008-01-25drivers/infiniband: Add missing "space"Joe Perches
Add missing spaces in the middle of format strings. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IPoIB/cm: Add connected mode support for devices without SRQsPradeep Satyanarayana
Some IB adapters (notably IBM's eHCA) do not implement SRQs (shared receive queues). The current IPoIB connected mode support only works on devices that support SRQs. Fix this by adding support for using the receive queue of each connected mode receive QP. The disadvantage of this compared to using an SRQ is that it means a full queue of receives must be posted for each remote connected mode peer, which means that total memory usage is potentially much higher than when using SRQs. To manage this, add a new module parameter "max_nonsrq_conn_qp" that limits the number of connections allowed per interface. The rest of the changes are fairly straightforward: we use a table of struct ipoib_cm_rx to hold all the active connections, and put the table index of the connection in the high bits of receive WR IDs. This is needed because we cannot rely on the struct ib_wc.qp field for non-SRQ receive completions. Most of the rest of the changes just test whether or not an SRQ is available, and post receives or find received packets in the right place depending on the answer. Cleaning up dead connections actually becomes simpler, because we do not have to do the "last WQE reached" dance that is required to destroy QPs attached to an SRQ. We just move the QP to the error state and wait for all pending receives to be flushed. Signed-off-by: Pradeep Satyanarayana <pradeeps@linux.vnet.ibm.com> [ Completely rewritten and split up, based on Pradeep's work. Several bugs fixed and no doubt several bugs introduced. - Roland ] Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IPoIB/cm: Factor out ipoib_cm_free_rx_reap_list()Roland Dreier
Factor out the code for going through the rx_reap list of struct ipoib_cm_rx and freeing each one. This consolidates the code duplicated between ipoib_cm_dev_stop() and ipoib_cm_rx_reap() and reduces the risk of error when adding additional accounting. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IPoIB/cm: Factor out ipoib_cm_create_srq()Roland Dreier
Factor out the code to create an SRQ and allocate the receive ring in ipoib_cm_dev_init() into a new function ipoib_cm_create_srq(). This will make the code neater when support for devices that don't implement SRQs is added. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IPoIB/cm: Factor out ipoib_cm_free_rx_ring()Roland Dreier
Factor out the code to unmap/free skbs and free the receive ring in ipoib_cm_dev_cleanup() into a new function ipoib_cm_free_rx_ring(). This function will be called from a couple of other places when support for devices that don't implement SRQs is added. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IPoIB: Trivial formatting cleanupsRoland Dreier
Fix whitespace blunders, convert "foo* bar" to "foo *bar", etc. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-23[SCSI] IB/iSER: add logical unit reset supportErez Zilber
eh_device_reset_handler was already added to scsi_host_template in iscsi_tcp, and is now added also for iscsi_iser. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] iscsi: convert xmit path to iscsi chunksOlaf Kirch
Convert xmit to iscsi chunks. from michaelc@cs.wisc.edu: Bug fixes, more digest integration, sg chaining conversion and other sg wrapper changes, coding style sync up, and removal of io fields, like pdu_sent, that are not needed. Signed-off-by: Olaf Kirch <olaf.kirch@oracle.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi: fix nop handlingMike Christie
During root boot and shutdown the target could send us nops. At this time iscsid cannot be running, so the target will drop the session and the boot or shutdown will hang. To handle this and allow us to better control when to check the network this patch moves the nop handling to the kernel. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi: do not block session during logoutMike Christie
There is not need to block the session during logout. Since we are going to fail the commands that were blocked just fail them immediately instead. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi,iser: patch for AHS supportBoaz Harrosh
- The default initialization of hdr_max is the minimum - sizeof(struct iscsi_cmd) - Once this patch goes into iser the default initialization at libiscsi can be removed. - This is not yet full support for AHSs at iser end. But it should be easy. Just allocate more space at iser_desc right after iscsi_hdr. Than at transmission time use ctask->hdr_len to retrieve the total size of all iscsi pdu headers. See previous patch at iscsi_tcp.[ch] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi, iscsi_tcp: add device supportMike Christie
This patch adds logical unit reset support. This should work for ib_iser, but I have not finished testing that driver so it is not hooked in yet. This patch also temporarily reverts the iscsi_tcp r2t write out patch. That code is completely rewritten in this patchset. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>