- 13 Mar, 2009 20 commits
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Mike Christie authored
We were using the shost work queue which ended up being a little akward since all iscsi hosts need a thread for scanning, but only drivers hooked into libiscsi need a workqueue for transmitting. So this patch moves the xmit workqueue to the lib. Signed-off-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
James Bottomley <James.Bottomley@HansenPartnership.com>
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Mike Christie authored
We never should hit the lock up that is spit out when lock dep is on and we logout. But we have been using the shost work queue in a odd way. This patch has us use the work queue for scanning instead of creating our own, and this ends up also killing the lock dep warnings. Signed-off-by:
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Mike Christie authored
There is no need to cap the queue depth in the modules. We set this in userspace and can do that there. For performance testing with ram based targets, this is helpful since we can have very high queue depths. Signed-off-by:
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Mike Christie authored
This makes the logging a compile time option and replaces the tcp_debug macro with a iscsi connection one that prints out a driver model id prefix. Signed-off-by:
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Mike Christie authored
This makes the logging a compile time option and replaces the scsi_debug and tcp_debug macro with session and connection ones that print out a driver model id prefix. Signed-off-by:
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Mike Christie authored
This makes the logging a compile time option and replaces the scsi_debug macro with session and connection ones that print out a driver model id prefix. Signed-off-by:
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Mike Christie authored
iser has its own logging inrfastrucutre. Convert it to use it instead of libiscsi. Signed-off-by:
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Pete Wyckoff authored
Mark iscsi_tcp as being capable of bidirectional transfers. The bsg interface checks this bit before attempting any bidirectional commands. Signed-off-by:
Pete Wyckoff <pw@padd.com> Signed-off-by:
Boaz Harrosh <bharrosh@panasas.com> Signed-off-by:
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Jean Delvare authored
Memory freeing in iscsi_pool_free() looks wrong to me. Either q->pool can be NULL and this should be tested before dereferencing it, or it can't be NULL and it shouldn't be tested at all. As far as I can see, the only case where q->pool is NULL is on early error in iscsi_pool_init(). One possible way to fix the bug is thus to not call iscsi_pool_free() in this case (nothing needs to be freed anyway) and then we can get rid of the q->pool check. Signed-off-by:
Jean Delvare <jdelvare@suse.de> Signed-off-by:
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Yi Zou authored
If LLD supports FCCRC offload, it should set ip_summed to be CHECKSUM_UNNECESSARY so we don't have to do CRC check again. Signed-off-by:
Yi Zou <yi.zou@intel.com> Signed-off-by:
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Yi Zou authored
This adds implementation of ddp_setup()/ddp_done() in fcoe_sw for its fcoe_sw_libfc_fcn_templ. Signed-off-by:
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Yi Zou authored
When LLD supports direct data placement (ddp) for large receive of an scsi i/o coming into fc_fcp, we call into libfc_function_template's ddp_setup() to prepare for a ddp of large receive for this read I/O. When I/O is complete, we call the corresponding ddp_done() to get the length of data ddped as well as to let LLD do clean up. fc_fcp_ddp_setup()/fc_fcp_ddp_done() are added to setup and complete a ddped read I/O described by the given fc_fcp_pkt. They would call into corresponding ddp_setup/ddp_done implemented by the fcoe layer. Eventually, fcoe layer calls into LLD's ddp_setup/ddp_done provided through net_device Signed-off-by:
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Yi Zou authored
Change fcoe_xmit to setup gso for LLD LSO offload as well as CRC offload Signed-off-by:
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Yi Zou authored
Make sure for large send is supported by LLD in outgoing FCP data, we are only sending the lso_max a time in one single large send, since that is what supported by LLD. Signed-off-by:
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Yi Zou authored
This checks if net_devices supports FCoE offload ops in netdev_ops and it if it does, then sets up the corresponding flags in the associated fc_lport. For large send offload, the maximum length supported in one large send is now described by the added lso_max in fc_lport, which is setup initially from netdev->gso_max_size. Signed-off-by:
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Yi Zou authored
This adds support to provide Fiber Channel over Ethernet (FCoE) offload through net_device's net_device_ops struct. The offload through net_device for FCoE is enabled in kernel as built-in or module driver. Signed-off-by:
David Miller <davem@davemloft.net> Signed-off-by:
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Yi Zou authored
Add FC CRC offload check for ETH_P_FCOE. Signed-off-by:
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Chris Leech authored
Define feature flags for FCoE offloads. Signed-off-by:
Chris Leech <christopher.leech@intel.com> Signed-off-by:
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Chris Leech authored
Reclaim 8 upper bits of netdev->features from GSO. Signed-off-by:
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Yi Zou authored
This adds eth type ETH_P_FCOE for Fibre Channel over Ethernet (FCoE), consequently, the ETH_P_FCOE from fc_fcoe.h and fcoe skb->protocol is not set as ETH_P_FCOE. Signed-off-by:
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- 12 Mar, 2009 20 commits
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Chauhan, Vijay authored
[SCSI] scsi_dh_rdac: Retry mode select for NO_SENSE, ABORTED_COMMAND, UNIT_ATTENTION, NOT_READY(02/04/01) This patch is to add retry for mode select if mode select command is returned with sense NO_SENSE, UNIT_ATTENTION, ABORTED_COMMAND, NOT_READY(02/04/01). This patch reorganise the sense keys from if-else to switch-case format for better maintainability. Signed-off-by:
Vijay Chauhan <vijay.chauhan@lsi.com> Acked-by:
Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by:
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Christof Schmitt authored
Report the fc_host_port_type as FC_PORTTYPE_NPIV when the subchannel is running in NPIV mode. This allows to see the correct type with lsscsi -H -t --list Acked-by:
Swen Schillig <swen@vnet.ibm.com> Signed-off-by:
Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by:
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Swen Schillig authored
A scheduled work might still be pending, running while the adapter is in progress to get dequeued from the system. This can lead to an invalid pointer dereference (Oops). Once the adpater is set online again, ensure the nameserver environment is initialized to the appropriate values again. Signed-off-by:
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Swen Schillig authored
Ensure the refcounting is correct even if we were not able to schedule a work. In addition we have to make sure no scheduled work is pending while we're dequeing the adapter from the systems environment. Signed-off-by:
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Martin Petermann authored
It will not be necessary to set the erp failed status bit in case a SCSI device is removed by the SCSI mid layer. In the case a SCSI device is unavailable for a short time (15 to 20 seconds) a FCP unit will not get on-line again. Signed-off-by:
Martin Petermann <martin@linux.vnet.ibm.com> Signed-off-by:
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Christof Schmitt authored
Use the I/O blocking mechanism in the FC transport class to allow faster failovers for multipathing: - Call fc_remote_port_delete early to set the rport to BLOCKED. - Check the rport status in queuecommand with fc_remote_portchkready to no longer accept new I/O for this port and fail the I/O with the appropriate scsi_cmnd result. - Implement the terminate_rport_io handler to abort all pending I/O requests - Return SCSI commands with DID_TRANSPORT_DISRUPTED while erp is running. - When updating the remote port status, check for late changes and update the remote ports status accordingly. Acked-by:
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Swen Schillig authored
After an error condition resolved a remote storage port was never re-opened. The incoming RSCN was not processed accordingly due to a misinterpreted status flag / return value combination. Signed-off-by:
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Christof Schmitt authored
The usage of the PCI flag to trigger interrupts is optional. Even without setting the flag, qdio still receives interrupts to continue working on the queue. Remove the PCI flag from zfcp, it is not necessary. Acked-by:
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Swen Schillig authored
The current number based id ERP logging is replaced by a string based tag version. The benefit is an easier location of the code in question and the removal of the lengthy array referencing the individual messages. The string (7 bytes) based version does not use more space since those bytes were "used" anyway due to the alignment of the structure. The encoding of the 7 byte string is as follows [0-1] = filename [2-5] = task/function [6] = section Due to the character of this string (fixed length) a string termination is not required here. Signed-off-by: -
Swen Schillig authored
An adapter close was always performed whether it was required, (e.g. in an error scenario) or not (e.g. initial open). This patch is changing the process in only doing an adapter close when it is required. Signed-off-by:
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Swen Schillig authored
The status read response FSF_STATUS_READ_SUB_ERROR_PORT is not defined in the specs and therefore not valid. All occurrences are removed from the code. Signed-off-by:
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Christof Schmitt authored
Issue ELS ADISC requests from workqueue. This allows the link test request to be sent when the request queue is full due to I/O load for other remote ports. It also simplifies request queue locking, zfcp_fsf_send_fcp_command_task is now the only function that has interrupts disabled from the caller. This is also a prereq for the FC passthrough support that issues ELS requests from userspace. Acked-by:
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Christof Schmitt authored
When the SCSI midlayer is running error recovery, the low-level error recovery in zfcp could be running and preventing the SCSI midlayer to issue error recovery requests. To avoid unnecessary error recovery escalation, wait for the zfcp erp to finish and retry if necessary. While reworking the SCSI eh handlers, alsa cleanup the code and simplify the interface from zfcp_scsi to the fsf layer. Acked-by:
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Christof Schmitt authored
For calls from zfcp erp, scsi_eh and sysfs switch the calls issuing FSF requests to zfcp_fsf_req_sbal_get to wait for free SBALs. Acked-by:
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Christof Schmitt authored
Only increment the req_id for successfully issued requests. This avoids some confusion when debugging issued fsf requests. Acked-by:
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Christof Schmitt authored
The lock only needs to protect the softirq context called from qdio against the userspace context called from sysfs. spin_lock and spin_lock_bh is enough. Acked-by:
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Martin Peschke authored
Provide measurement data for the utilisation of the QDIO outbound queue. The additional value allows to calculate an average queue utilisation by looking at the deltas per time unit. Needed for capacity planning. It is up to user space to handle wrap-arounds of the 64 bit value. The new counter neatly complements the existing counter for queue full conditions. That is why, both statistics counter have been integrated. Signed-off-by:
Martin Peschke <mpeschke@linux.vnet.ibm.com> Signed-off-by:
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Christof Schmitt authored
Use the device pointer in zfcp_unit for tracking if we have a registered SCSI device. With this approach, the flag ZFCP_STATUS_UNIT_REGISTERED is only redundant and can be removed. Acked-by:
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Christof Schmitt authored
PORT_PHYS_CLOSING is only set and cleared, but not actually used for status checking. PORT_INVALID_WWPN is set when the GID_PN request does not return a d_id for a remote port, e.g. when a remote port has been unplugged. For this case, the d_id is zero. In the erp we can check the d_id and use the normal escalation procedure that gives up after three retries and remove the special case. PORT_NO_WWPN is unused: Each port in the remote port list has a valid wwpn. The WKA ports are now tracked outside the port list. Remove the PORT_NO_WWPN flag, since this is no longer set for any port. Acked-by:
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Alan Stern authored
The SCSI core calls scsi_proc_hostdir_add() from within scsi_host_alloc(), but the corresponding scsi_proc_hostdir_rm() routine is called from within scsi_remove_host(). As a result, if a host is allocated and then deallocated without ever being registered, the host's directory in /proc is leaked. This patch (as1181b) fixes this bug in the SCSI core by moving scsi_proc_hostdir_rm() into scsi_host_dev_release(). Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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