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path: root/drivers/s390/scsi/zfcp_fsf.h
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* [SCSI] zfcp: Simplify handling of ct and els requestsChristof Schmitt2009-12-041-0/+18
| | | | | | | | | | | | | | | | Remove some redundancies in FC related code and trace: - drop redundant data from SAN trace (local s_id that only changes during link down, ls_code that is already part of payload, d_id in ct response trace that is always the same as in ct request trace) - use one common fsf struct to hold zfcp data for ct and els requests - leverage common fsf struct for FC passthrough job data, allocate it with dd_bsg_data for passthrough requests and unify common code for ct and els passthrough request - simplify callback handling in zfcp_fc Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] zfcp: Remove ZFCP_DID_MASKChristof Schmitt2009-12-041-6/+9
| | | | | | | | | | Instead of assigning 4 bytes with the highest byte masked out, use a 3 byte array with the ntoh24 and h24ton helper functions, thus eliminating the need for the ZFCP_DID_MASK. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] zfcp: Use common code definitions for FC ELS structsChristof Schmitt2009-12-041-18/+2
| | | | | | | | | | Use common code definitions for FC plogi, logo, rscn and adisc structs instead of inventing private ones. Move the private struct for issuing ELS ADISC inside zfcp to zfcp_fc header file. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] zfcp: Move debug data from zfcp_data to own data structureChristof Schmitt2009-09-051-1/+2
| | | | | | | | | | | | The struct zfcp_adapter includes everything related to the debug traces. This introduces dependences between the definitions in zfcp_def.h and zfcp_dbf.h. Move all debug related data structures to a new data structure to break those dependencies and manage the debug data in zfcp_dbf.[hc]. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] zfcp: remove undefined subtype for status read responseSwen Schillig2009-03-121-4/+0
| | | | | | | | | | 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: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Add support for unchained FSF requestsChristof Schmitt2008-12-291-0/+2
| | | | | | | | | | | | Add the support to send CT and ELS requests as unchained FSF requests. This is required for older hardware and was somehow omitted during the cleanup of the FSF layer. The req_count and resp_count attributes are unused, so remove them instead of adding a special case for setting them. Also add debug data and a warning, when the ct request hits a limit. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Acked-by: Martin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* blktrace: pass zfcp driver dataStefan Raspl2008-10-171-0/+12
| | | | | | | | | | | This patch writes the channel and fabric latencies in nanoseconds per request via blktrace for later analysis. The utilization of the inbound and outbound adapter queue is also reported. Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com> Signed-off-by: Martin Peschke <mp3@de.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [SCSI] zfcp: remove unused references, declarations and flagsSwen Schillig2008-10-031-75/+0
| | | | | | | | | | | | | | | | | | | - Remove unused references and declarations, including one instance of the FC ls_adisc struct that has been defined twice. - Also remove the flags COMMON_OPENING, COMMON_CLOSING, ADAPTER_REGISTERED and XPORT_OK that are only set and cleared, but not checked anywhere. - Remove the zfcp specific atomic_test_mask makro. Simply use atomic_read directly instead. - Remove the zfcp internal sg helper functions and switch the places where it is still used to call sg_virt directly. - With the update of the QDIO code, the QDIO data structures no longer use the volatile type qualifier. Now we can also remove the volatile qualifiers from the zfcp code. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: zfcp_fsf cleanup.Swen Schillig2008-07-121-13/+18
| | | | | | | | Code cleanup for the zfcp_fsf.c file. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Message cleanupChristof Schmitt2008-07-121-16/+4
| | | | | | | | | | | Cleanup the messages used in the zfcp driver: Remove unnecessary debug and trace message and convert the remaining messages to standard kernel macros. Remove the zfcp message macros and while updating the whole flie also update the copyright headers. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Move CFDC code to new file.Christof Schmitt2008-07-121-0/+12
| | | | | | | | | | | zfcp implements a device file to allow Linux guests changing the Access Control Tables stored in the adapter. The code for the device file has nothing to do with the other parts of the driver, so move it to a new file and cleanup the code while doing so. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Track fabric and channel latencies provided by FCP adapterChristof Schmitt2008-06-051-1/+10
| | | | | | | | | | Add the infrastructure to retrieve the fabric and channel latencies from FSF commands for each SCSI command that has been processed. For each unit, the sum, min, max and number of requests is tracked. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Add some statistics provided by the FCP adapter to the sysfsSwen Schillig2008-04-271-2/+16
| | | | | | | | | | | | | | | | | | | | | | | | The new FCP adapter statistics provide a variety of information about the virtual adapter (subchannel). In order to collect this information the zfcp driver is extended to query this information. The information provided by the new FCP adapter statistics can be fetched by reading from the following files in the sysfs filesystem /sys/class/scsi_host/host<n>/seconds_active /sys/class/scsi_host/host<n>/requests /sys/class/scsi_host/host<n>/megabytes /sys/class/scsi_host/host<n>/utilization These are the statistics on a virtual adapter (subchannel) level. The information provided is raw and not modified or interpreted by any means. No interpretation or modification of the values is done by the zfcp driver. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: whitespace cleanupSwen Schillig2007-10-121-15/+15
| | | | | | | | Cleanup the whitepace from the entire zfcp driver to prevent to have those changes in future feature or function patches. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: (cleanup) removed superfluous macros, struct members, typedefsAndreas Herrmann2006-05-281-18/+3
| | | | | | | | Removed some macros, struct members and typedefs which were unused or not necessary. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: (cleanup) shortened copyright and author informationAndreas Herrmann2006-05-281-14/+3
| | | | | | | Copyright update, shortened file headers, shortened author information. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: transport class adaptations IIAndreas Herrmann2006-01-141-1/+0
| | | | | | | | | | Replaced zfcp adapter attributes with fc_host attributes: fc_topology by port_type, physical_wwpn by permanent_port_name. Make use of fc_host attribute supported_speeds. Removed zfcp adapter attribute physical_s_id. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: handle unsolicited status notification lostMaxim Shchetynin2006-01-141-0/+12
| | | | | | | | | Handle unsolicited adapter status that informs about loss of previous unsolicited status notification(s). Signed-off-by: Maxim Shchetynin <maxim@de.ibm.com> Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: provide support for NPIVMaxim Shchetynin2005-09-191-12/+39
| | | | | | | | | | N_Port ID Virtualization (NPIV) allows a single FCP port to appear as multiple, distinct ports providing separate port identification. NPIV is supported by FC HBAs on System z9. zfcp was adapted to support this new feature. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: enhancement of zfcp debug featuresMaxim Shchetynin2005-09-191-0/+3
| | | | | | | | | | | | | | | Debug features (DBFs) els_dbf, cmd_dbf and abt_dbf were removed and san_dbf, hba_dbf and scsi_dbf were introduced. The erp_dbf did not change. The new traces improve debugging of problems with zfcp, scsi-stack, multipath and hardware in the SAN. san_dbf traces things like ELS and CT commands, hba_dbf saves HBA specific information of requests, and scsi_dbf saves FCP and SCSI specific information of requests. Common to all new DBFs is that they provide a so called structured view. This significantly improves readability of the traces. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* zfcp: add point-2-point support2005-04-181-2/+4
| | | | | | | | | | | | From: Andreas Herrmann <aherrman@de.ibm.com> This patch mainly introduces support for point-2-point topology. From: Heiko Carstens <heiko.carstens@de.ibm.com> From: Maxim Shchetynin <maxim@de.ibm.com> From: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+472
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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