linux/include/scsi, branch v2.6.16

[PATCH] add scsi_execute_in_process_context() API

2006-02-14T17:14:26Z

We have several points in the SCSI stack (primarily for our device functions) where we need to guarantee process context, but (given the place where the last reference was released) we cannot guarantee this. This API gets around the issue by executing the function directly if the caller has process context, but scheduling a workqueue to execute in process context if the caller doesn't have it. Unfortunately, it requires memory allocation in interrupt context, but it's better than what we have previously. The true solution will require a bit of re-engineering, so isn't appropriate for 2.6.16. Signed-off-by: James Bottomley

[SCSI] iscsi update: cleanup iscsi class interface

2006-02-04T22:17:03Z

From: michaelc@cs.wisc.edu fujita.tomonori@lab.ntt.co.jp da-x@monatomic.org and err path fixup from: ogerlitz@voltaire.com This patch cleans up that interface by having the lld and class pass a iscsi_cls_session or iscsi_cls_conn between each other when the function is used by HW and SW iscsi llds. This way the lld does not have to remember if it has to send a handle or pointer and a handle or pointer to connection, session or host. This also has the class verify the session handle that gets passed from userspace instead of using the pointer passed into the kernel directly. Signed-off-by: Mike Christie Signed-off-by: Alex Aizman Signed-off-by: Dmitry Yusupov Signed-off-by: James Bottomley

Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

2006-01-31T21:12:41Z

[SCSI] Prevent scsi_execute_async from guessing cdb length

2006-01-26T20:13:50Z

When the scsi_execute_async interface was added it ended up reducing the flexibility of userspace to send arbitrary scsi commands through sg using SG_IO. The SG_IO interface allows userspace to specify the CDB length. This is now ignored in scsi_execute_async and it is guessed using the COMMAND_SIZE macro, which is not always correct, particularly for vendor specific commands. This patch adds a cmd_len parameter to the scsi_execute_async interface to allow the caller to specify the length of the CDB. Signed-off-by: Brian King Signed-off-by: James Bottomley

[SCSI] Remove host template ordered_flush variable

2006-01-25T10:12:40Z

After the recent overhaul of the block layer the variable "ordered_flush" is no longer used. Signed-off-by: Tetsuo Takata Signed-off-by: Jens Axboe

[PATCH] scsi_transport_spi build fix

2006-01-19T03:20:16Z

On alpha: In file included from drivers/scsi/sym53c8xx_2/sym_glue.h:59, from drivers/scsi/sym53c8xx_2/sym_fw.c:40: include/scsi/scsi_transport_spi.h:57: error: field `dv_mutex' has incomplete type Cc: James Bottomley Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[SCSI] iscsi: seperate iscsi interface from setup functions

2006-01-14T16:55:20Z

This is the second version of the patch to address Christoph's comments. Instead of doing the lib, I just kept everything in scsi_trnapsort_iscsi.c like the FC and SPI class. This was becuase the driver model and sysfs class is tied to the session and connection setup so separating did not buy very much at this time. The reason for this patch was becuase HW iscsi LLDs like qla4xxx cannot use the iscsi class becuase the scsi_host was tied to the interface and class code. This patch just seperates the session from scsi host so that LLDs that allocate the host per some resource like pci device can still use the class. This is also fixes a couple refcount bugs that can be triggered when users have a sysfs file open, close the session, then read or write to the file. Signed-off-by: Alex Aizman Signed-off-by: Dmitry Yusupov Signed-off-by: Mike Christie Signed-off-by: James Bottomley

[SCSI] remove target parent limitiation

2006-01-14T16:55:05Z

When James Smart fixed the issue of the userspace scan atributes crashing the system with the FC transport class he added a patch to let the transport class check if the parent is valid for a given transport class. When adding support for the integrated raid of fusion sas devices we ran into a problem with that, as it didn't allow adding virtual raid volumes without the transport class knowing about it. So this patch adds a user_scan attribute instead, that takes over from scsi_scan_host_selected if the transport class sets it and thus lets the transport class control the user-initiated scanning. As this plugs the hole about user-initiated scanning the target_parent hook goes away and we rely on callers of the scanning routines to do something sensible. For SAS this meant I had to switch from a spinlock to a mutex to synchronize the topology linked lists, in FC they were completely unsynchronized which seems wrong. Signed-off-by: Christoph Hellwig Signed-off-by: James Bottomley

[SCSI] sem2mutex: scsi_transport_spi.c

2006-01-14T16:55:01Z

Convert the SCSI transport class code to use a mutex rather than a semaphore. Signed-off-by: Jes Sorensen Signed-off-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: James Bottomley

[SCSI] fc transport: add permanent_port_name fc_host attribute

2006-01-14T16:54:48Z

Add fc_host attribute permanent_port_name which is used to show the port name of the primary port - the port that initially logged into the fabric. For a virtual port (registered via the primary port with FDISC command) it is useful to know not only its (virtual) port name but also the permanent port name. Signed-off-by: Andreas Herrmann Signed-off-by: James Bottomley