kernel.git/include/scsi/libiscsi.h, branch linux-2.6.27.y

[SCSI] libiscsi, iser, tcp: remove recv_lock

2008-07-12T13:22:22Z

The recv lock was defined so the iscsi layer could block the recv path from processing IO during recovery. It turns out iser just set a lock to that pointer which was pointless. We now disconnect the transport connection before doing recovery so we do not need the recv lock. For iscsi_tcp we still stop the recv path incase older tools are being used. This patch also has iscsi_itt_to_ctask user grab the session lock and has the caller access the task with the lock or get a ref to it in case the target is broken and sends a tmf success response then sends data or a response for the command that was supposed to be affected bty the tmf. Signed-off-by: Mike Christie Signed-off-by: James Bottomley

[SCSI] libiscsi: fix cmds_max setting

2008-07-12T13:22:21Z

Drivers expect that the cmds_max value they pass to the iscsi layer is the max scsi commands + mgmt tasks. This patch implements that and fixes some checks for nr cmd limits. Signed-off-by: Mike Christie Signed-off-by: James Bottomley

[SCSI] iscsi class: Add session initiatorname and ifacename sysfs attrs.

2008-07-12T13:22:21Z

This adds two new attrs used for creating initiator ports and binding sessions to hardware. The session level initiatorname: Since bnx2i does a scsi_host per host device, we need to add the iface initiator port settings on the session, so we can create multiple initiator ports (each with different inames) per device/scsi_host. The current iname reflects that qla4xxx can have one iname per hba, and we are allocating a host per session for software. The iname on the host will remain so we can export and set the hba level qla4xxx setting. The ifacename attr: To bind a session to a some peice of hardware in userspace we maintain some mappings, but during boot or iscsid restart (iscsid contains the user space part of the driver) we need to be able to figure out which of those host mappings abstractions maps to certain sessions. This patch adds a ifacename attr, which userspace can set to id the host side of the endpoint across pivot_roots and iscsid restarts. Signed-off-by: Mike Christie Signed-off-by: James Bottomley

[SCSI] iscsi class: user device_for_each_child instead of duplicating session list

2008-07-12T13:22:20Z

Currently we duplicate the list of sessions, because we were using the test for if a session was on the host list to indicate if the session was bound or unbound. We can instead use the target_id and fix up the class so that drivers like bnx2i do not have to manage the target id space. Signed-off-by: Mike Christie Signed-off-by: James Bottomley

[SCSI] libiscsi: rename iscsi_cmd_task to iscsi_task

2008-07-12T13:22:19Z

This is the second part of the iscsi task merging, and all it does it rename iscsi_cmd_task to iscsi_task and mtask/ctask to just task. Signed-off-by: Mike Christie Signed-off-by: James Bottomley

[SCSI] libiscsi: merge iscsi_mgmt_task and iscsi_cmd_task

2008-07-12T13:22:19Z

There is no need to have the mgmt and cmd tasks separate structs. It used to save a lot of memory when we overprealocated memory for tasks, but the next patches will set up the driver so in the future they can use a mempool or some other common scsi command allocator and common tagging. Signed-off-by: Mike Christie Signed-off-by: James Bottomley

[SCSI] libiscsi, iscsi_tcp, iser: add session cmds array accessor

2008-07-12T13:22:18Z

Currently to get a ctask from the session cmd array, you have to know to use the itt modifier. To make this easier on LLDs and so in the future we can easilly kill the session array and use the host shared map instead, this patch adds a nice wrapper to strip the itt into a session->cmds index and return a ctask. Signed-off-by: Mike Christie Signed-off-by: James Bottomley

[SCSI] iscsi: modify iscsi printk so it can take driver data pointers

2008-07-12T13:22:17Z

Some drivers want to be able to just pass in the driver data pointers to the iscsi objects. To enable this we need the iscsi printk macro to cast the object. Signed-off-by: Mike Christie Signed-off-by: James Bottomley

[SCSI] iscsi: remove session/conn_data_size from iscsi_transport

2008-07-12T13:22:16Z

This removes the session and conn data_size fields from the iscsi_transport. Just pass in the value like with host allocation. This patch also makes it so the LLD iscsi_conn data is allocated with the iscsi_cls_conn. Signed-off-by: Mike Christie Signed-off-by: James Bottomley

[SCSI] iscsi: add iscsi host helpers

2008-07-12T13:22:16Z

This finishes the host/session unbinding, by adding some helpers to add and remove hosts and the session they manage. Signed-off-by: Mike Christie Signed-off-by: James Bottomley