The source code in this commit is a combination of the v4.18.20 qla2xxx
driver and the QLogic target driver from the QLogic git repository
(commit ac4faf74f437 ("qla2xxx: Fix session creation fail")).
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8091 d57e44dd-8a1f-0410-8b47-8ef2f437770f
Move the QLogic target code from drivers/scst/qla2x00-target/ to
drivers/scsi/qla2xxx/.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8084 d57e44dd-8a1f-0410-8b47-8ef2f437770f
Additionally, only try to download the Linux kernel when including the
qla2x00t driver in the output.
This is a modified version of a patch supplied by Pascal de Bruijn.
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Make sure that both paths in the diff header have the same number of
components. This patch does not change the result of applying a patch
generated by this script.
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Revert r7022 because:
* Changing $kver3 into $kver is wrong for 2.x kernels.
* Building include/iscsi_scst_itf_ver.h must not depend on the kernel version.
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Otherwise there is non-fatal error like: No such file or directory
grep: /lib/modules/<current_running_kernel>/build/.config: Permission denied
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This patch does not change any functionality but makes the SCST
source code easier to read. The intention is later on to move all
backported functions and macros from <scst.h> into <backport.h>.
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Changes in this patch:
- Rework the SCSI pass-through code such that for kernel versions
>= 2.6.30 the scst_exec_req_fifo patch is no longer needed.
- Modify the pass-through code such that blk_rq_append_bio() is only
called for kernel version 2.6.30. For later kernel versions
blk_make_request() is called instead.
- Rework scst_scsi_exec_async().
- Add debug tracing of SCSI pass-through result status.
- Add a lockdep_assert_held() call in scsi_end_async().
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(sometimes called storage head) this patch makes it possible to tell the
initiator which port to use. Since that information can be specified per LUN,
with this patch it is not only possible to tell the initiator which path to
choose but also to balance the load over target ports. Target port attributes
can not only be defined for target ports that exist on the system on which
SCST is running but also for target ports present on other nodes of the same
HA setup. As far as I know this feature is unique among open source storage
target implementations.
Note: with this patch SCSI target port attributes can be defined for each LUN
defined on each SCST target individually. Such an SCST target is either a
physical entity (e.g. a HCA for the ib_srpt driver) or a logical entity (e.g.
an iSCSI target for the iscsi_scst driver). In the last case it is up to the
user to make sure that there is a one-to-one relationship between SCST target
and SCSI target port.
This patch is based on the specifications in the ANSI T10 spc4r30 document.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
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