- 12 Jul, 2008 29 commits
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FUJITA Tomonori authored
We don't need to hold bsg_mutex during bsg_complete_all_commands(). It leads to a problem that we block bsg_unregister_queue during bsg_complete_all_commands (untill all the outstanding commands complete). Thanks to Pete Wyckoff for finding the bug and testing the patch. The detailed bug report is: http://marc.info/?l=linux-scsi&m=121182137132145&w=2Tested-by:
Pete Wyckoff <pw@osc.edu> Signed-off-by:
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by:
James Bottomley <James.Bottomley@HansenPartnership.com>
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Boaz Harrosh authored
Let through upto the largest command of 260 defined by the scsi standard. iscsi core supports this already. Now that the scsi-ml supports it we can start using large commands. [jejb:rejections fixed up] Signed-off-by:
Boaz Harrosh <bharrosh@panasas.com> Acked-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
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Harvey Harrison authored
Signed-off-by:
Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by:
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Harvey Harrison authored
__FUNCTION__ is gcc-specific, use __func__ (Update diff by Mike Christie) Signed-off-by:
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Mike Christie authored
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:
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Mike Christie authored
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:
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Mike Christie authored
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:
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Mike Christie authored
iscsi_tcp creates its ep in userspace using sockets because it is virtual, so we just check if we are sent a ep and fail if we are. Signed-off-by:
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Mike Christie authored
This hooks iser into the iscsi endpoint code. Previously it handled the lookup and allocation. This has been made generic so bnx2i and iser can share it. It also allows us to pass iser the leading conn's ep, so we know the ib_deivce being used and can set it as the scsi_host's parent. And that allows scsi-ml to set the dma_mask based on those values. Signed-off-by:
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Mike Christie authored
Add sysfs representation for the endpoint, so userspace can match the host and session to the endpoint. This will allow us to set the host's parent correctly at host creation time. The next patches will convert tcp and iser, and fix iser's dma_mask bug. Signed-off-by:
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Mike Christie authored
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:
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Mike Christie authored
This handles the iscsi_cmd_task rename and renames the iser cmd task to iser task. Signed-off-by:
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Mike Christie authored
This converts iscsi_tcp to use the iscsi_task name. Signed-off-by:
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Mike Christie authored
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:
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Mike Christie authored
Convert ib_iser to support merged tasks. Signed-off-by:
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Mike Christie authored
Convert iscsi_tcp to support merged tasks. Signed-off-by:
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Mike Christie authored
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:
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Mike Christie authored
This patch modifies libiscsi, so drivers like bnx2i and iser can execute a command from queuecommand/send_pdu instead of having to be queued to be run in a workq. Signed-off-by:
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Mike Christie authored
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:
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Mike Christie authored
After the stop_conn callback has returned the LLD should not touch the scsi cmds. iscsi_tcp and libiscsi use the conn->recv_lock and suspend_rx field to halt recv path processing, but iser does not have any protection. This patch modifies iser so that userspace can just call the ep_disconnect callback, which will halt all recv IO, before calling the stop_conn callback so we do not have to worry about the conn->recv_lock and suspend rx field. iser just needs to stop the send side from accessing the ib conn. Fixup to handle when the ep poll fails and ep disconnect is called from Erez. Signed-off-by:
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Mike Christie authored
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:
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Mike Christie authored
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:
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Mike Christie authored
This finishes the host/session unbinding, by adding some helpers to add and remove hosts and the session they manage. Signed-off-by:
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Mike Christie authored
bnx2i allocates a host per netdevice but will use libiscsi, so this unbinds the session from the host in that code. This will also be useful for the iser parent device dma settings fixes. Signed-off-by:
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Mike Christie authored
This renames the iscsi_host to iscsi_cls_host to match the other structs, because libiscsi wants to use the iscsi_host name in the future. Signed-off-by:
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Mike Christie authored
max_cmd_len and max_conn are not really used. max_cmd_len is always 16 and can be set by the LLD. max_conn is always one since we do not support MCS. Signed-off-by:
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Mike Christie authored
iscsi offload (bnx2i and qla4xx) allocate a scsi host per hba, so the session creation path needs a shost/host_no argument. Software iscsi/iser will follow the same behabior as before where it allcoates a host per session, but in the future iser will probably look more like bnx2i where the host's parent is the hardware (rnic for iser and for bnx2i it is the nic), because it does not use a socket layer like how iscsi_tcp does. Signed-off-by:
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Prakash, Sathya authored
When the firmware is in Fault state it will be identifed only when the next time the driver access the IOC state. This patch includes a polling function in the driver which will be executed in regular interval to check the status of the firmware and if it is in Fault state, then the firmware will be reset by the driver. Signed-off-by:
Sathya Prakash <sathya.prakash@lsi.com> Signed-off-by:
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Prakash, Sathya authored
The initial period is set to 0xFF Signed-off-by:
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- 05 Jun, 2008 11 commits
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Prakash, Sathya authored
Updating copyright statement to include the year 2008 Signed-off-by:
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Prakash, Sathya authored
Updating driver version to 3.04.07 from 3.04.06 Signed-off-by:
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Christof Schmitt authored
drivers/s390/scsi/zfcp_dbf.c:692:2: warning: context imbalance in 'zfcp_rec_dbf_event_thread' - different lock contexts for basic block Replace the parameter indicating if the lock is held with a new entry function that only acquires the lock. This makes the lock handling more visible and removes the sparse warning. Signed-off-by:
Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by:
Martin Peschke <mp3@de.ibm.com> Signed-off-by:
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Martin Peschke authored
There is no need to pack data structures which describe the contents of records in the new recovery trace. lcrash currently depends on the binary format for the other traces, removing the packed attribute from all traces would break trace debugging with lcrash. Signed-off-by:
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Martin Peschke authored
This change better spreads trace levels of recovery related events. There was an overlap of traces for some recovery triggers and the processing of recovery actions. Signed-off-by:
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Martin Peschke authored
Store the index of the buffer in the inbound queue used to report request completion in trace record for request coompletion. This piece of information allows to better compare qdio and zfcp traces. Signed-off-by:
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Martin Peschke authored
sbal_last is more appropriate, because it matches sbal_first. Signed-off-by:
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Martin Peschke authored
sbal_last is confusing, as it is not the last one actually used, but just a limit. sbal_limit is a better name. Signed-off-by:
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Martin Peschke authored
This field is not needed, because it designates an index with a fix offset from sbal_first. It's name is confusing anyway. Signed-off-by:
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Christof Schmitt authored
Remove some sparse warnings by telling sparse that zfcp_req_create acquires the lock for the request queue. Signed-off-by:
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Heiko Carstens authored
If allocation of a status buffer failed the function incorrectly returned 0 instead of -ENOMEM. Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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