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Commit Graph

121499 Commits

Author SHA1 Message Date
Hannes Reinecke
46ccf6b55b [SCSI] scsi_dh_alua: always update TPGS status on activate
When activating a patch we should always update the TPGS state
as it might have changed in between.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-30 12:31:03 -07:00
Hannes Reinecke
6c3633d08a [SCSI] scsi_dh: Implement match callback function
Some device handler types are not tied to the vendor/model
but rather to a specific capability. Eg ALUA is supported
if the 'TPGS' setting in the standard inquiry is set.
This patch implements a 'match' callback for device handler
which supersedes the original vendor/model lookup and
implements the callback for the ALUA handler.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-30 12:28:30 -07:00
Hannes Reinecke
2a9ab40f74 [SCSI] scsi_dh: Fixup kernel-doc comments
Fixup some kernel-doc comments to reference to the
correct function name.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-30 12:27:41 -07:00
Hannes Reinecke
d7c48feb38 [SCSI] scsi_dh_alua: Evaluate TPGS setting from inquiry data
Instead of issuing a standard inquiry from within the
alua device handler we can evaluate the TPGS setting from
the existing inquiry data of the sdev and save us the I/O.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-30 12:26:49 -07:00
Christoph Hellwig
ac81c6a832 [SCSI] libsas: fix sas_queuecommand return values
->queuecommand must return either 0, or one of the SCSI_MLQUEUE_* return
values.  Non-transient errors are indicated by setting cmd->result before
calling ->scsi_done and returning 0.  Fix libsas to adhere to this calling
convention.  Note that the DID_ERROR for returns from the low-level driver
might not be correct for all cases, but it's the best we can do with
the current layering in libsas.  I also suspect that the pre-existing
handling of -SAS_QUEUE_FULL should really be SCSI_MLQUEUE_HOST_BUSY, but
I'll leave that for a separate change.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-30 12:13:46 -07:00
Christoph Hellwig
a923f756be [SCSI] libsas: reindent sas_queuecommand
Switch sas_queuecommand to a normal indentation and goto based error handling.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-30 12:12:22 -07:00
Christoph Hellwig
92bd401ba7 [SCSI] libsas: sas_queuecommand doesnt need host_lock
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-30 12:09:41 -07:00
Nao Nishijima
fe2d1851e9 [SCSI] sd: Use sd_printk() instead of printk()
sd_ioctl() still use printk() for log output.
It should use sd_printk() instead of printk(), as well as other sd_*.

All SCSI messages should output via s*_printk() instead of printk().

Signed-off-by: Nao Nishijima <nao.nishijima.xt@hitachi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:16:20 -07:00
Bhanu Prakash Gollapudi
eccdcd026a [SCSI] bnx2fc: Need not schedule destroy_work from __bnx2fc_destroy
Since it is already called in the right context with rtnl_lock and dev_mutex
held.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:16:19 -07:00
James Smart
1dbf5a3706 [SCSI] lpfc 8.3.26: Change driver version to 8.3.26
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:16:19 -07:00
James Smart
f7a919b4cd [SCSI] lpfc 8.3.26: Fix SYSFS interface issues
Fix SYSFS interface issues.

- In the lpfc_sli4_pdev_status_reg_wait() routine, after initial 100ms delay
  following write to PHYSDEV_CONTROL register for the firmware reaction, check
  the RN bit and ERR bit of the SLIPORT_STATUS register. If none of them
  became 1, the previous PHYSDEV_CONTROL register should be considered failed
  due to lack of privilege and error for no permission should be returned
  immediately without getting into the wait for RDY bits on the SLIPORT_STATUS
  register.
- Remove the driver check on dev->is_physfn before proceed to perform the
  PHYSDEV_CONTROL register write, and let the PCI function's privilege
  setting and driver handling of PHYSDEV_CONTROL register write failure to
  handle the reset-ability through the SLI port.
- Added key to ctlreg_write to prevent unauthorized or unexpected write to
  the control register.
- Change return to EACCES for sysfs access that are failed because hba_reset
  is disabled.

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:16:19 -07:00
James Smart
079b5c916d [SCSI] lpfc 8.3.26: Fix HBA initialization issues
Fix HBA initialization issues

- Swap all values that come from the firmware image on little endian systems.
  Created a new bf_get_be macro that does the same as the bf_get_le macro but
  for big endian data instead of little endian data.
- Moved the incrementing of temp_offset after the copy
  fixed the write object loop to use temp_offset to figure out where the end
  of the image is instead of offset.
- Added the necessary codes for properly bringing the driver instance offline
  and then trying to bring the port back online with the PCI function IP reset.
  If it fails to bring the SLI port back online, it will fall through to
  bringing the SLI port to HBA error offline.
- Add a call in the probe_one_s3 and probe_one_s4 routines to get the Modeldesc
- Change OCe50100 to OCe15100
- Made the error log also include the PCI BAR bitmap returned from kernel call
  pci_select_bars().

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:16:18 -07:00
James Smart
bf08611bcc [SCSI] lpfc 8.3.26: Fix issues pertaining to SCSI/FC protocol.
Fix issues pertaining to SCSI/FC protocol.

- Allow frames destined to 0xFFFFFE to be processed by the driver by matching
  that DID with the physical port.
- Call lpfc_sli_issue_iocb with context1 set to ndlp
- In echo command accept function, adjust memcpy to limit memcpy to 1K
- Set LPFC_SLI3_BG_ENABLED properly upon completion.
- Skip the INIT_VFI call in lpfc_register_fcf if the FCF is already
  registered and go immediately to initial flogi.
- use "status" variable instead of "ret" variable to hold the return of the
  fc_block_scsi_eh.

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:16:18 -07:00
Jayamohan Kallickal
8dce69ff48 [SCSI] be2iscsi: Add pci_disable device
This patch adds call to pci_disable_device during
rmmod and shutdown. The lack of this call was causing hang in
insmod - rmmod loop test

Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:16:18 -07:00
Jayamohan Kallickal
25602c97f5 [SCSI] be2iscsi: Adding a shutdown Routine
This patch adds a shutdown routine. It fixes a bug where when be2net
and be2iscsi are both used be2iscsi was not cleaning up its resources
properly causing be2net to fail to get loaded when the system is
rebooted.

Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:16:18 -07:00
Jayamohan Kallickal
8fcfb21073 [SCSI] be2iscsi: Fixing the /proc/interrupts problem V3
Fix be2iscsi driver to use a separate pointer for each irq action->name
field and avoid display corruption in /proc/interrupts. The be2iscsi driver
was using a single static array in a function for the irq action->name field.
This results in garbage output from  /proc/interrupts

The pointer for action->name is garbage and scribbles the output on the screen.

This patch fixes the problem:

156:          0          0          0          0          0          0
0          0          0          0          0          0          0
0          0          0          0          0          0          0
0          0          0          0       PCI-MSI-X  beiscsi_msix_0017

This patch is based on Prarit's patch here:
http://www.spinics.net/lists/linux-scsi/msg52325.html
but I have fixed up the failure paths and removed
redundant check for !i suggested by Eike.

Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:16:17 -07:00
Chad Dupuis
e5fdae5583 [SCSI] qla2xxx: Fix "active_mask" may be used uninitialized warning.
Since active_mask is first assigned in an "else" block, the compiler throws
a warning saying that the active_mask variable may be used uninitialized in
a print statement later.  Initialize active_mask to 0 in the declaration to
stop the warning.

Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:14:57 -07:00
Giridhar Malavali
3173167f01 [SCSI] qla2xxx: Issue mailbox command only when firmware hung bit is reset for ISP82xx.
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:14:57 -07:00
Joe Carnuccio
b668ae37f1 [SCSI] qla2xxx: Return sysfs error codes appropriate to conditions.
Return sysfs error codes that match the conditions encountered.
This prevents sysfs from retrying a request which is conditioned
to fail under the current circumstance.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:14:57 -07:00
Joe Carnuccio
697a4bc691 [SCSI] qla2xxx: Provide method for updating I2C attached VPD.
Provide bsg interface for updating VPD attached on the I2C serial bus.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:14:57 -07:00
Joe Carnuccio
1fedd80f9c [SCSI] qla2xxx: Correction to sysfs edc interface.
Corrects the return value for the cases where read/write edc fails;
this prevents sysfs from retrying the operation until forever.

Corrects the printk width specifier for the first byte of buf.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:14:56 -07:00
Saurav Kashyap
491118dff9 [SCSI] qla2xxx: During loopdown perform Diagnostic loopback.
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:14:56 -07:00
Saurav Kashyap
63d92d3e2e [SCSI] qla2xxx: Fix array out of bound warning.
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:14:56 -07:00
Saurav Kashyap
54883291ff [SCSI] qla2xxx: check for marker IOCB during response queue processing.
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:14:56 -07:00
Chad Dupuis
86e45bf66f [SCSI] qla2xxx: Enable write permission to some debug related module parameters to be changed dynamically.
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:14:55 -07:00
Saurav Kashyap
c8582ad95b [SCSI] qla2xxx: Prevent CPU lockups when "ql2xdontresethba" module param is set.
Driver is not releasing the lock if ql2xdontresethba is set, this might lead
to a lockup.

Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:14:55 -07:00
Saurav Kashyap
999916dc59 [SCSI] qla2xxx: Implemeted beacon on/off for ISP82XX.
[jejb: fix up checkpatch.pl errors]
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:14:55 -07:00
Giridhar Malavali
08de2844c6 [SCSI] qla2xxx: Add support for ISP82xx to capture dump (minidump) on failure.
Minidump allows us to catpure a snapshot of the firmware/hardware states at the
time of failure for further analysis.

[jejb: added missing #include <linux/vmalloc.h>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> ]
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29 00:12:26 -07:00
Swen Schillig
86a9668a8d [SCSI] zfcp: support for hardware data router
FICON Express8S supports hardware data router, which requires an
adapted qdio request format.
This part 2/2 exploits the functionality in zfcp.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:37:03 -06:00
Swen Schillig
dfe5bb5061 [SCSI] qdio: base support for hardware data router with zfcp
FICON Express8S supports hardware data router, which requires an
adapted qdio request format.
This part 1/2 provides the qdio base required for exploitation in
zfcp.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:37:02 -06:00
Steffen Maier
cc405acee2 [SCSI] zfcp: non-experimental support for DIF/DIX
DIF/DIX support for zfcp is no longer experimental,
and config option is no longer necessary.
Return error from queuecommand for unsupported data directions.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:37:00 -06:00
Jianyun Li
f0c568a478 [SCSI] mvumi: Add Marvell UMI driver
The Marvell Universal Message Interface (UMI) defines a messaging
interface between host and Marvell products (Plato, for example). It
considers situations of limited system resource and optimized system
performance.
	UMI driver translates host request to message and sends message
to FW via UMI, FW receives message and processes it, then sends response
to UMI driver.
	FW generates an interrupt when it needs to send information or
response to UMI driver

Signed-off-by: Jianyun Li <jyli@marvell.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:58 -06:00
Mike Christie
de37920b87 [SCSI] qla4xxx: export iface name
Export the name of iface session is attached to. This is needed
so tools like iscsiadm/iscsistart can match the sessions to
userspace ifaces when rebuilding iscsid's state during boot.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:54 -06:00
Vikas Chaudhary
95d31262b3 [SCSI] qla4xxx: Added support for adapter and firmware reset
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:49 -06:00
Vikas Chaudhary
2944369144 [SCSI] scsi: Added support for adapter and firmware reset
Added new sysfs attr 'host_reset' in scsi_sysfs.c to
perform adapter or firmware reset as suggested by
Mike Christie here:
http://marc.info/?l=linux-scsi&m=127359347111167&w=2

user/application can write "adapter" or "firmware" on
this attr and it will call newly added function hook
in scsi_host_template to call LDD adapter or firmware
reset implementation.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:46 -06:00
Harish Zunjarrao
6085491c34 [SCSI] qla4xxx: Added Get ACB support using BSG
This command is used to read ACB params from firmware

Signed-off-by: Harish Zunjarrao <harish.zunjarrao@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:44 -06:00
Harish Zunjarrao
5232f801bd [SCSI] qla4xxx: Added restore factory defaults support using BSG
This command will causes the firmware to update all
configurations to pre-defined factory default settings.

Signed-off-by: Harish Zunjarrao <harish.zunjarrao@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:43 -06:00
TARUISI Hiroaki
dfcf777581 [SCSI] Fix out of spec CD-ROM problem with media change
Some CD-ROMs fail to report a media change correctly.  The specific
one for this patch simply fails to respond to commands, then gives a
UNIT ATTENTION after being reset which returns ASC/ASCQ 28/00.  This
is out of spec behaviour, but add a check in the eat CC/UA on reset
path to catch this case so the CD-ROM will function somewhat properly.

[jejb: fixed up white space and accepted without signoff]
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:41 -06:00
Vikas Chaudhary
2ada7fc5d4 [SCSI] qla4xxx: added support to update initiator iscsi port
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:40 -06:00
Vikas Chaudhary
fcb5124e03 [SCSI] scsi_transport_iscsi: Added support to update initiator iscsi port
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:37 -06:00
Vikas Chaudhary
91ec7cec4a [SCSI] qla4xxx: Added vendor specific sysfs attributes
Added board_id, fw_state, phy_port_cnt, phy_port_num,
iscsi_func_cnt, hba_model

Signed-off-by: Harish Zunjarrao <harish.zunjarrao@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:34 -06:00
Harish Zunjarrao
7c07d139cf [SCSI] qla4xxx: Add read/update NVRAM support for 40xx adapters using BSG
Signed-off-by: Harish Zunjarrao <harish.zunjarrao@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:33 -06:00
Harish Zunjarrao
8b0402e138 [SCSI] qla4xxx: Add get ACB state support using BSG
Signed-off-by: Harish Zunjarrao <harish.zunjarrao@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:32 -06:00
Harish Zunjarrao
ef7830bb62 [SCSI] qla4xxx: Code cleanup for read/update flash using BSG
- Corrected return status
- Added reset active check
- Removed unused dma_map_sg calls
- Added debug prints on failure

Signed-off-by: Harish Zunjarrao <harish.zunjarrao@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:30 -06:00
Vikas Chaudhary
943c157b79 [SCSI] qla4xxx: Added support to update mtu
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:29 -06:00
Vikas Chaudhary
8c7d40fb6b [SCSI] scsi_transport_iscsi: Added support to update mtu
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:28 -06:00
Manish Rangankar
2a991c2159 [SCSI] qla4xxx: Boot from SAN support for open-iscsi
Hook qla4xxx in fw boot sysfs interface so iscsi tools
can use the info to create boot sessions.

Signed-off-by: Manish Rangankar <manish.rangankar@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:27 -06:00
Manish Rangankar
0e7e85019c [SCSI] qla4xxx: Remove reduandant code after open-iscsi integration.
1. Remove device database entry (ddb) state.
2. Remove device database (DDB) list building.
                With open-iscsi integration the logins to the target devices are
        handled by the user space. So the information of target is now
        maintained in the iscsi_session object. This is handled at
        libiscsi level so there is no need to maintain a list of DDBs in
        the qla4xxx LLD.
3. qla4xxx: Remove add_device_dynamically.
                Since autologin in FW is disabled with open-iscsi integration,
        driver will never get an AEN for which driver has not requested
        a DDB index. So remove the add_device_dynamically function.
4. Remove qla4xxx_tgt_dscvr
        Since firmware autologin is disabled this function will not work.
        Now user has the ability to do the target discovery and login to
        each target individually. Firwmare will not do the login on its own.
5. Remove relogin related code
        All relogin is handled by userspace now. qla4xxx just need to
        notify userspace of a connection failure, this triggers the
        relogin.
6. Remove add_session and alloc_session
        Now qla4xxx uses iscsi_session_setup that would do the necessary
        allocations for session and ddb_entry.

Signed-off-by: Manish Rangankar <manish.rangankar@qlogic.com>
Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:26 -06:00
Manish Rangankar
b3a271a94d [SCSI] qla4xxx: support iscsiadm session mgmt
Add scsi_transport_iscsi hooks in qla4xxx to support
iSCSI session management using iscsiadm.

This patch is based on discussion here
http://groups.google.com/group/open-iscsi/browse_thread/thread/e89fd888baf656a0#

Now users can use iscsiadm to do target discovery and do login/logout to
individual targets using the qla4xxx iSCSI class interface.

This patch leaves some dead code, but to make it easier to review
we are leaving and in the next patch we will remove that old code.

V2 - NOTE: Added code to avoid waiting for AEN during login/logout
in the driver, instead added a kernel to user event
to notify iscsid about login status. Because of this
iscsid will not get blocked.

Signed-off-by: Manish Rangankar <manish.rangankar@qlogic.com>
Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:24 -06:00
Manish Rangankar
17fa575eec [SCSI] scsi_transport_iscsi: Add conn login, kernel to user, event to support offload session login.
Offload drivers like qla4xxx will offload the sending of the login/logout
pdus still, so this patch adds iscsi_conn_login_event which is
used by these types of drivers to notify userspace that the connection
has changed state.

It also adds a iscsi_is_session_online helper so the lld
can query the sessions state field.

Signed-off-by: Manish Rangankar <manish.rangankar@qlogic.com>
Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:23 -06:00