iscsi: modify transport class to support qla4xxx
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Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/9 | iscsi: add target discvery event to transport classdrivers/ include/ include/ | +57 | 0 replies | |
| 2/9 | iscsi: fixup set/get param functionsdrivers/ drivers/ include/ +1 more | +246 | 0 replies | |
| 3/9 | iscsi: convert iser to new set/get param fnsdrivers/ | +17 | 0 replies | |
| 4/9 | iscsi: convert iscsi_tcp to new set/get param fnsdrivers/ | +24 | 0 replies | |
| 5/9 | iscsi: fix session refcoutingdrivers/ drivers/ | +9 | 0 replies | |
| 6/9 | iscsi: rm channel usage from iscsidrivers/ drivers/ include/ | +5 | 0 replies | |
| 7/9 | iscsi: break up session creation into two stagesdrivers/ include/ | +76 | 0 replies | |
| 8/9 | iscsi: pass target nr to session creationdrivers/ drivers/ include/ | +12 | 0 replies | |
| 9/9 | iscsi: add async notification of session eventsdrivers/ include/ include/ | +235 | 0 replies |
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Cover letter [PATCH 0/9] iscsi: modify transport class to support qla4xxx
It looks like qla4xxx is getting close to being mergable. The following patches complete the transport class related fixes I wanted qlogic to do. Qlogic and Doug will resend the driver with Arjan and others comments and lot of other bug fixes and cleanups.
The following patches modify the transport class so qla4xxx can use it. The patches also make any needed conversions to libiscsi and the other iscsi LLD modules.
The reason for the changes is because the qlogic HW can expose a interface that is close to a normal SPI driver that hides most of the iscsi details (session mode), or it can expose a interface that exposes more of the iscsi details (connection mode). And we chose to go with session mode.
Even in session mode, we have hooked the qla4xxx driver into the open-iscsi framework. Normally to do discovery and log into iscsi sessions using iscsi_tcp you can do:
iscsiadm --mode=discovery --type=sendtargets --portal=192.168.0.10:3260 --login
To see the running session you can do:
iscsiadm --m session
These same commands now work for qla4xxx and we also support qla4xxx persistent targets.
We have hooked qla4xxx into the userspace scanning and iscsi state model code. So you can load the module, then run iscsid. iscsid will then scan for disks and setup userspace. Or you can run iscsid and then load the module. iscsid and the tools can be used with qla4xxx and iscsi_tcp and iscsi_iser at the same time.
In the future we plan to implement more functionality in the userspace tools for qla4xxx like manually adding sessions and removing sessions, and push more code to userspace, but the current code at least provides a usable driver.
Doug and Qlogic have finished the last qla4xx cleanups and will send that driver soon