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2006-05-28[SCSI] zfcp: print bit error threshold data human readableRalph Wuerthner1-4/+32
Replace hex dump of bit error threshold data by log message showing bit error threshold data human readable. Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-28[SCSI] zfcp: (cleanup) removed superfluous macros, struct members, typedefsAndreas Herrmann7-122/+41
Removed some macros, struct members and typedefs which were unused or not necessary. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-28[SCSI] zfcp: (cleanup) kmalloc/kzalloc replacementAndreas Herrmann3-20/+10
Replace kmalloc/memset by kzalloc or kcalloc. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-28[SCSI] zfcp: (cleanup) remove useless commentsAndreas Herrmann3-284/+0
Removed some useless comments. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-28[SCSI] zfcp: (cleanup) shortened copyright and author informationAndreas Herrmann14-180/+59
Copyright update, shortened file headers, shortened author information. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] imm: no need for unchecked_isa_dmaRandy Dunlap1-4/+4
Relax the lowmem bounce buffer requirement for imm so that any low memory page will do -- they don't need to be below the ISA 16 MB limit, just need to be mapped in low memory. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Update version number to 8.01.05-k2.Andrew Vasquez1-2/+2
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Correct issue where driver improperly issued SNS commands in ↵Andrew Vasquez1-0/+3
N2N topologies. Semantic changes in ISP24xx firmware behaviour inadvertently caused the driver to believe an F-port topology was present in an N_port-to-N_port configuration. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Consolidate firmware-dump handling across ISPs.Andrew Vasquez5-62/+43
Simplify and centralise buffer allocation/deallocation, as there's no point in having two memory request methods. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Consolidate "qla2xxx" string usage to a #define.Andrew Vasquez2-7/+10
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Use PCI_DEVICE() for pci_device_id definition.Andrew Vasquez1-22/+11
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Remove obsolete firmware-loader-module support.Andrew Vasquez17-39456/+22
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Remove unused port-type RSCN handling code.Andrew Vasquez7-1581/+1
Expandind on the previous commit: commit 79f89a4296ff22f09baf538d4ff2a6d0c3097a73 Author: andrew.vasquez@qlogic.com <andrew.vasquez@qlogic.com> Date: Fri Jan 13 17:05:58 2006 -0800 [SCSI] qla2xxx: Disable port-type RSCN handling via driver state-machine. and given: - the process-context requirements of the FC transport rport-APIs. - lack of port-type RSCN processing logic for ISP24xx and newer chips. it's time now to remove the state-machine logic from mainline. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Drop unused driver cruft.Andrew Vasquez9-170/+5
- structure definitions. - structure members. - #define's. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Add support for alternate WWN NVRAM setting.Andrew Vasquez1-0/+12
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Correct endianess comparisons during ISP24xx NVRAM ↵Andrew Vasquez1-3/+3
configuration. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: ABBA lock ordering fix.Andrew Vasquez1-14/+1
In qla2x00_reset_chip the driver first takes the hardware lock, and then later on takes the mbx lock. In the mailbox_command code.. it goes the other way around. Discovered with the lock validator. Cc: Ingo Molnar <mingo@elte.hu> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Update ISP24xx firwmare loading heuristics.Andrew Vasquez1-83/+93
If firmware image is unavailable via request_firwmare(), then attempt to load the image (likely out-of-date) stored in flash memory. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Use FW calculated residual count for underrun handling.Ravi Anand2-5/+13
With ISP24XX and ISP54XX parts. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Add support for new flash part.Ravi Anand2-12/+83
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] qla2xxx: Don't wait for loop transition to complete if LOOP_DEAD ↵Ravi Anand1-0/+4
state is attained. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] iscsi: update versionMike Christie2-5/+5
update version Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] iscsi: fix command requeues during iscsi recoveryMike Christie3-42/+50
Do not flush queues then block session. This will cause commands to needlessly swing around on us and remove goofy recovery_failed field and replace with state value. And do not start recovery from within the host reset function. This causeis too many problems becuase open-iscsi was desinged to call out to userspace then have userpscae decide if we should go into recovery or kill the session. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] iscsi: support mutiple daemonsMike Christie1-11/+27
Patch from david.somayajulu@qlogic.com and cleaned up by Tomo. qla4xxx is going to have a different daemon so this patch just routes the events to the right daemon. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] iscsi: kill dtask mempoolsMike Christie2-88/+10
Discovered by steven@hayter.me.uk and patch by michaelc@cs.wisc.edu The dtask mempool is reserving 261120 items per session! Since we are now sending headers with sendmsg there is no reason for the mempool and that was causing us to us carzy amounts of mem. We can preallicate a header in the r2t and task struct and reuse them Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] iscsi: only preallocate login bufferMike Christie1-16/+10
We only use the mtask data buffer for login tasks so we do not need to preallocate a buffer for every mtask. This saves 8 * 31 KB. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] iscsi: dont use sendpage for iscsi headersMike Christie1-16/+8
From Zhen and ported by Mike: Don't use sendpage for the headers. sendpage for the pdu headers does not seem to have a performance impact, makes life harder for mutiple data pdus to be in flight and still trips up some network cards when it is from slab mem. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] fix (unlikely) memory leak in DAC960 driverJesper Juhl1-6/+7
The Coverity checker found a memory leak (bug nr. 1245) in drivers/block/DAC960.c::DAC960_V2_ProcessCompletedCommand() The leak is pretty unlikely since it requires that the first of two successive kmalloc() calls fail while the second one succeeds. But it can still happen even if it's unlikely. If the first call that allocates 'PhysicalDeviceInfo' fails but the one that allocates 'InquiryUnitSerialNumber' succeeds, then we will leak the memory allocated to 'InquiryUnitSerialNumber' when the variable goes out of scope. A simple fix for this is to change the existing code that frees 'PhysicalDeviceInfo' if that one was allocated but 'InquiryUnitSerialNumber' was not, into a check for either pointer being NULL and if so just free both. This is safe since kfree() can deal with being passed a NULL pointer and it avoids the leak. While I was there I also removed the casts of the kmalloc() return value since it's pointless. I also updated the driver version since this patch changes the workings of the code (however slightly). This issue could probably be fixed a lot more elegantly, but the code is a big mess IMHO and I just took the least intrusive route to a fix that I could find instead of starting on a cleanup as well (that can come later). Please consider for inclusion. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] aacraid: remove unneeded listMark Haverkamp4-9/+0
Received From Mark Salyzyn The queue tracking is just not being used, not even for debugging. Information about outstanding commands can be acquired from the scsi structures. Signed-off-by: Mark Haverkamp <markh@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] aacraid: sa race condition fixMark Haverkamp1-2/+2
Received From Mark Salyzyn A race condition existed that could result in a lost completion of a command to the ppc based cards. Signed-off-by: Mark Haverkamp <markh@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] aacraid: adjustable timeoutsMark Haverkamp6-7/+15
Received From Mark Salyzyn Add the ability to adjust for unusual corner case failures. Both of these additional module parameters deal with embedded, non-intel or complicated system scenarios. Aif_timeout can be increased past the default 2 minute timeout to drop application registrations when a system has an unusually high event load resulting from continuing management requests, or simultaneous builds, or sluggish user space as a result of system load. Startup_timeout can be increased past the default 3 minute timeout to drop an adapter initialization for systems that have a very large number of targets, or slow to spin-up targets, or a complicated set of array configurations that extend the time for the firmware to declare that it is operational. This timeout would only have an affect on non-intel based systems, as the (more patient) BIOS would generally be where the startup delay would be dealt with. Signed-off-by: Mark Haverkamp <markh@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] aacraid: optimize sg allocMark Haverkamp1-3/+3
Received From Mark Salyzyn Slight space and speed efficiency improvement. Signed-off-by: Mark Haverkamp <markh@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-20[SCSI] aacraid: remove unneeded lockingMark Haverkamp1-8/+0
Received From Mark Salyzyn Since new commands to the card are quiesced, respect the changes in the SCSI error path which dropped locking around the hba reset handler and similarly drop the lock requirement in the driver's path. Signed-off-by: Mark Haverkamp <markh@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-10[SCSI] fix proc_scsi_write to return "length" on success with ↵James Bottomley1-2/+7
remove-single-device case Problem spotted by: Suzuki K P <suzuki@in.ibm.com> A zero return on success isn't correct for filesystem write functions. They should either return negative error or the length of bytes consumed. Add code to convert our zero on success error return to return the length of bytes passed in. This fixes the following: $ echo "scsi remove-single-device 0 0 3 0" > /proc/scsi/scsi bash: echo: write error: No such device or address" Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-10[SCSI] iscsi: dequeue all buffers from queueMike Christie1-6/+8
debugged by wrwhitehead@novell.com patch and analysis by fujita.tomonori@lab.ntt.co.jp Only tcp_read_sock and recv_actor (iscsi_tcp_data_recv for us) see desc.count. It is is used just for permitting tcp_read_sock to read the portion of data in the socket. When iscsi_tcp_data_recv sees a partial header, it sets desc.count. However, it is possible that the next skb (containing the rest of the header) still does not come. So I'm not sure that this scheme is completely correct. Ideally, we should use the exact length of the data in the socket for desc.count. However, it is not so simple (see SIOCINQ in tcp_ioctl). So I think that iscsi_tcp_data_recv can just stop playing with desc.count and tell tcp_read_sock to read the all skbs. As proposed already, if iscsi_tcp_data_ready sets desc.count to non-zero, tcp_read_sock does that. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-10[SCSI] iscsi: increment expstatsn during loginMike Christie4-21/+32
debugged by Ming and Rohan: The problem Ming and Rohan debugged was that during a normal session login, open-iscsi is not incrementing the exp_statsn counter. It was stuck at zero. From the RFC, it looks like if the login response PDU has a successful status then we should be incrementing that value. Also from the RFC, it looks like if when we drop a connection then reconnect, we should be using the exp_statsn from the old connection in the next relogin attempt. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-10[SCSI] iscsi: align printksOr Gerlitz4-18/+20
align printk output Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-10[SCSI] iscsi: fix manamgement task oopsMike Christie1-6/+21
from patmans@us.ibm.com and michaelc@cs.wisc.edu Fix bugs when forcing a mgmt task to fail and allow session recovery to cleanup the session/connection of any running mgmt tasks. When called during the in login state. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-05-10[SCSI] iscsi: add transport end point callbacksOr Gerlitz4-5/+65
add transport end point callbacks so iscsi drivers that cannot connect from userspace, like iscsi tcp, using sockets do not have to implement their own socket infrastructure. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-19[SCSI] scsi_lib.c: fix warning in scsi_kmap_atomic_sgAndrew Morton1-1/+2
drivers/scsi/scsi_lib.c: In function `scsi_kmap_atomic_sg': drivers/scsi/scsi_lib.c:2394: warning: unsigned int format, different type arg (arg 3) drivers/scsi/scsi_lib.c:2394: warning: unsigned int format, different type arg (arg 4) Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-15[SCSI] scsi_scan.c: fix compile warningsakpm@osdl.org2-9/+18
drivers/scsi/scsi_scan.c: In function `scsi_probe_and_add_lun': drivers/scsi/scsi_scan.c:926: warning: unused variable `vend' drivers/scsi/scsi_scan.c:926: warning: unused variable `mod' drivers/scsi/scsi_scan.c: At top level: drivers/scsi/scsi_scan.c:829: warning: `scsi_inq_str' defined but not used Fix those, tighten up the (somewhat poorly-designed) logging macro and fix some coding-style warts. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-14[SCSI] dc395x: dynamically map scatter-gather for PIOGuennadi Liakhovetski3-102/+176
The current dc395x driver uses PIO to transfer up to 4 bytes which do not get transferred by DMA (under unclear circumstances). For this the driver uses page_address() which is broken on highmem. Apart from this the actual calculation of the virtual address is wrong (even without highmem). So, e.g., for reading it reads bytes from the driver to a wrong address and returns wrong data, I guess, for writing it would just output random data to the device. The proper fix, as suggested by many, is to dynamically map data using kmap_atomic(page, KM_BIO_SRC_IRQ) / kunmap_atomic(virt). The reason why it has not been done until now, although I've done some preliminary patches more than a year ago was that nobody interested in fixing this problem was able to reliably reproduce it. Now it changed - with the help from Sebastian Frei (CC'ed) I was able to trigger the PIO path. Thus, I was also able to test and debug it. There are 4 cases when PIO is used in dc395x - data-in / -out with and without scatter-gather. I was able to reproduce and test only data-in with and without SG. So, the data-out path is still untested, but it is also somewhat simpler than the data-in. Fredrik Roubert (also CC'ed) also had PIO triggering on his system, and in his case it was data-out without SG. It would be great if he could test the attached patch on his system, but even if he cannot, I would still request to apply the patch and just wait if anybody cries... Implementation: I put 2 new functions in scsi_lib.c and their declarations in scsi_cmnd.h. I exported them without _GPL, although, I don't feel strongly about that - not many drivers are likely to use them. But there is at least one more - I want to use them in tmscsim.c. Whether these are the right files for the functions and their declarations - not sure either. Actually, they are not scsi-specific, so, might go somewhere around other scattergather magic? They are not platform specific either, and most SG functions are defined under arch/*/... As these issues were discussed previously there were some more routines suggested to manipulate scattergather buffers, I think, some of them were needed around crypto code... So, might be a common place reasonable, like lib/scattergather.c? I am open here. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-14[SCSI] ibmvscsi: convert kmalloc + memset to kcallocFUJITA Tomonori1-2/+1
Convert kmalloc + memset to kcalloc in ibmvscsi Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Dave Boutcher <sleddog@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-14Merge ../scsi-rc-fixes-2.6James Bottomley43-13269/+1098
Conflicts: include/scsi/scsi_devinfo.h Same number for two BLIST flags: BLIST_MAX_512 and BLIST_ATTACH_PQ3 Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-14[SCSI] scsi_transport_sas: don't scan a non-existent end deviceJames Bottomley1-0/+2
Any end device that can't support any of the scanning protocols shouldn't be scanned, so set its id to -1 to prevent scsi_scan_target() being called for it. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-14[SCSI] iscsi: convert iscsi tcp to libiscsiMike Christie2-2206/+813
This just converts iscsi_tcp to the lib Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-14[SCSI] iscsi: add libiscsiMike Christie6-118/+2045
There is a lot of code duplcited between iscsi_tcp and the upcoming iscsi_iser driver. This patch puts the duplicated code in a lib. There is more code to move around but this takes care of the basics. For iscsi_offload if they use the lib we will probably move some things around. For example in the queuecommand we will not assume that the LLD wants to do queue_work, but it is better to handle that later when we know for sure what iscsi_offload looks like (we could probably do this for iscsi_iser though to). Ideally I would like to get the iscsi_transports modules to a place where all they really have to do is put data on the wire, but how to do that will hopefully be more clear when we see other modules like iscsi_offload. Or maybe iscsi_offload will not use the lib and it will just be iscsi_iser and iscsi_tcp and maybe the iscsi_tcp_tgt if that is allowed in mainline. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-14[SCSI] iscsi: fix up iscsi ehMike Christie5-274/+561
The current iscsi_tcp eh is not nicely setup for dm-multipath and performs some extra task management functions when they are not needed. The attached patch: - Fixes the TMF issues. If a session is rebuilt then we do not send aborts. - Fixes the problem where if the host reset fired, we would return SUCCESS even though we had not really done anything yet. This ends up causing problem with scsi_error.c's TUR. - If someone has turned on the userspace nop daemon code to try and detect network problems before the scsi command timeout we can now drop and clean up the session before the scsi command timesout and fires the eh speeding up the time it takes for a command to go from one patch to another. For network problems we fail the command with DID_BUS_BUSY so if failfast is set scsi_decide_disposition fails the command up to dm for it to try on another path. - And we had to add some basic iscsi session block code. Previously if we were trying to repair a session we would retrun a MLQUEUE code in the queuecommand. This worked but it was not the most efficient or pretty thing to do since it would take a while to relogin to the target. For iscsi_tcp/open-iscsi a lot of the iscsi error handler is in userspace the block code is pretty bare. We will be adding to that for qla4xxx. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-14[SCSI] iscsi: add sysfs attrs for uspace sync upMike Christie4-76/+342
For iscsi boot when going from initramfs to the real root we need to stop the userpsace iscsi daemon. To later restart it iscsid needs to be able to rebuild itself and part of that process is matching a session running the kernel with the iscsid representation. To do this the attached patch adds several required iscsi values. If the LLD does not provide them becuase, login is done in userspace, then the transport class and userspace set ths up for the LLD. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-14[SCSI] iscsi: rm kernel iscsi handles usage for session and connectionMike Christie4-50/+105
from hare@suse.de and michaelc@cs.wisc.edu hw iscsi like qla4xxx does not allocate a host per session and for userspace it is difficult to restart iscsid using the "iscsi handles" for the session and connection, so this patch just has the class or userspace allocate the id for the session and connection. Note: this breaks userspace and requires users to upgrade to the newest open-iscsi tools. Sorry about his but open-iscsi is still too new to say we have a stable user-kernel api and we were not good nough designers to know that other hw iscsi drivers and iscsid itself would need such changes. Actually we sorta did but at the time we did not have the HW available to us so we could only guess. Luckily, the only tools hooking into the class are the open-iscsi ones or other tools like iscsitart hook into the open-iscsi engine from userspace or prgroams like anaconda call our tools so they are not affected. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>