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2009-12-04[SCSI] libfc: add some generic NPIV support routines to libfcChris Leech
Adds a function to create a new VN_Port instances, which share the EM list with the N_Port, VN_Port lookup by fabric ID when responding to a new request (otherwise the exchange lookup from the N_Ports EM list is trusted to return an exchange with a cached lport value for the correct VN_Port), a pointer to a fc_vport structure for VN_Ports, and flags to indicate if an N_Port supports NPIV and if the switch/fabric allows it. Signed-off-by: Chris Leech <christopher.leech@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: changes to libfc_host_alloc to consolidate initialization with ↵Chris Leech
allocation I'd like to keep basic initialization together with allocation, which means this can't just be a tail-call to scsi_host_alloc. This is needed to create a generic libfc host allocation routine for NPIV VN_Ports, which will share the exchange ID space (through sharing exchange manager structures) with the parent lport. In order to clone the exchange manager list when the lport is allocated, the list head must be initialized earlier. Also, update fnic to use the libfc_host_alloc so that later changes do not break it. (contribution by Joe Eykholt) Signed-off-by: Chris Leech <christopher.leech@intel.com> Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: Move libfc_init and libfc_exit to fc_libfc.cRobert Love
These routines are for the libfc kernel module and should be in the libfc .c file. Moving the libfc __init routine into fc_libfc.c caused the creation of the fc_setup_fcp() and fc_destroy_fcp() routines so that scsi_pkt_cachep was not exposed outside of fc_fcp.c. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: Add libfc/fc_libfc.[ch] for libfc internal routinesRobert Love
include/scsi/libfc.h is currently loaded with common code shared between libfc's sub-modules as well as shared between libfc and fcoe. Previous patches attempted to move out non-common code. This patch creates two files for common libfc routines that will not be shared with fcoe, fnic or any other LLDs. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: Remove fc_fcp_completeRobert Love
This function is never used, let's remove it. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: Move non-common routines and prototypes out of libfc.hRobert Love
This patch moves all non-common routines and function prototypes out of libfc.h and into the appropriate .c files. It makes these routines 'static' when necessary and removes any unnecessary EXPORT_SYMBOL statements. A result of moving the fc_exch_seq_send, fc_seq_els_rsp_send, fc_exch_alloc and fc_seq_start_next prototypes out of libfc.h is that they were no longer being imported into fc_exch.c when libfc.h was included. This caused errors where routines in fc_exch.c were looking for undefined symbols. To fix this this patch reorganizes fc_seq_alloc, fc_seq_start_next and fc_seq_start_next_locked. This move also made it so that fc_seq_start_next_locked did not need to be prototyped at the top of fc_exch.c. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] fcoe: Increase FCOE_MAX_LUN to 0xFFFF (65535)Robert Love
The maximum number of LUNs was far too low. This value is what most other FC HBAs are using. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] fnic: Allocate OS interrupt resources just before enabling interruptsAbhijeet Joglekar
The OS interrupt vectors were getting allocated before the interrupt resources were mapped from hardware. For Legacy interrupts, since they are shared with other devices, as soon as an interrupt is registered with the OS, it can fire while the fnic isr resource is still unmapped. This can cause crash because of access to unmapped resources. For MSIX and MSI, since interrupts are not shared with other devices, this problem didnt happen, because the interrupt is enabled as the last step before returning from _probe. For Legacy however, since the interrupt is shared, the handler can be called as soon as it is registered. Solution is to register interrupt handlers with OS as last step before enabling device interrupts. Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] scsi_transport_fc: Introduce helper function for blocking scsi_ehChristof Schmitt
Move the duplicated code from FC LLDs to SCSI FC transport class. Acked-by: James Smart <james.smart@emulex.com> Acked-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Acked-by: Abhijeet Joglekar <abjoglek@cisco.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] scsi_lib: fix potential NULL dereferenceJiri Slaby
Stanse found a potential NULL dereference in scsi_kill_request. Instead of triggering BUG() in 'if (unlikely(cmd == NULL))' branch, the kernel will Oops earlier on cmd dereference. Move the dereferences after the if. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] 3w-sas: Add new driver for LSI 3ware 9750adam radford
[jejb: fix up for new queue depth code] Signed-off-by: Adam Radford <aradford@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] scsi_debug: fix Thin provisioning supportDouglas Gilbert
While testing scsi_debug with these patches I found a problem with the Block Limits VPD page function. The length returned by the inquiry_evpd_b0() function was too short. A patch to fix that and a cosmetic change (that the form factor of scsi_debug is less than 1.8 inches) is attached. Signed-off-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] vmw_pvscsi: SCSI driver for VMware's virtual HBA.Alok Kataria
This is a driver for VMware's paravirtualized SCSI device, which should improve disk performance for guests running under control of VMware hypervisors that support such devices. Signed-off-by: Alok N Kataria <akataria@vmware.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] scsi_dh: Make alua hardware handler's activate() asyncChandra Seetharaman
Make the activate function asynchronous by using blk_execute_rq_nowait() Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] scsi_dh: Make hp hardware handler's activate() asyncChandra Seetharaman
Make the activate function asynchronous by using blk_execute_rq_nowait() Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] scsi_dh: Make rdac hardware handler's activate() asyncChandra Seetharaman
Batch up MODE_SELECT in rdac device handler. LSI RDAC storage has the capability of handling mode selects for multiple luns in a same command. Make use of that ability to send as few MODE SELECTs as possible to the storage controller as possible. This patch creates a work queue and queues up activate requests when a MODE SELECT is sent down the wire. When that MODE SELECT completes, it compiles queued up activate requests for multiple luns into a single MODE SELECT. This reduces the time to do failover/failback of large number of LUNS. Signed-off-by: Babu Moger <babu.moger@lsi.com> Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] scsi_dh: Change the scsidh_activate interface to be asynchronousChandra Seetharaman
Make scsi_dh_activate() function asynchronous, by taking in two additional parameters, one is the callback function and the other is the data to call the callback function with. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] zfcp: Adapt change_queue_depth for queue full trackingChristof Schmitt
Adapt the change_queue_depth callback in zfcp for the new reason parameter. Simply pass each call back to the SCSI midlayer, there are no resource adjustments necessary for zfcp. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Removes check for (depth <= default_depth) in case of SCSI_QDEPTH_RAMP_UP call back, not needed after added max_queue_depth per sdev. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: add queue_depth ramp upVasu Dev
Adjust queue_depth on fc_change_queue_depth call back with reason SCSI_QDEPTH_RAMP_UP, no additional resource adjustments necessary for libfc. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Acked-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] add queue_depth ramp up codeVasu Dev
Current FC HBA queue_depth ramp up code depends on last queue full time. The sdev already has last_queue_full_time field to track last queue full time but stored value is truncated by last four bits. So this patch updates last_queue_full_time without truncating last 4 bits to store full value and then updates its only current usages in scsi_track_queue_full to ignore last four bits to keep current usages same while also use this field in added ramp up code. Adds scsi_handle_queue_ramp_up to ramp up queue_depth on successful completion of IO. The scsi_handle_queue_ramp_up will do ramp up on all luns of a target, just same as ramp down done on all luns on a target. The ramp up is skipped in case the change_queue_depth is not supported by LLD or already reached to added max_queue_depth. Updates added max_queue_depth on every new update to default queue_depth value. The ramp up is also skipped if lapsed time since either last queue ramp up or down is less than LLD specified queue_ramp_up_period. Adds queue_ramp_up_period to sysfs but only if change_queue_depth is supported since ramp up and queue_ramp_up_period is needed only in case change_queue_depth is supported first. Initializes queue_ramp_up_period to 120HZ jiffies as initial default value, it is same as used in existing lpfc and qla2xxx. -v2 Combined all ramp code into this single patch. -v3 Moves max_queue_depth initialization after slave_configure is called from after slave_alloc calling done. Also adjusted max_queue_depth check to skip ramp up if current queue_depth is >= max_queue_depth. -v4 Changes sdev->queue_ramp_up_period unit to ms when using sysfs i/f to store or show its value. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Tested-by: Christof Schmitt <christof.schmitt@de.ibm.com> Tested-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] fcoe, libfc: fix an libfc issue with queue ramp down in libfcVasu Dev
The cmd_per_lun value is used by scsi-ml as fall back lowest queue_depth value but in case of libfc cmd_per_lun is set to same value as max queue_depth = 32. So this patch reduces cmd_per_lun value to 3 and configures each lun with default max queue_depth 32 in fc_slave_alloc. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Acked-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: convert to scsi_track_queue_fullMike Christie
This converts the libfc using scsi_track_queue_full to track the queue full from the change_queue_depth callback. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Acked-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] scsi error: have scsi-ml call change_queue_depth to handle QUEUE_FULLMike Christie
This has scsi-ml call the change_queue_depth functions when we get a QUEUE_FULL. It will only change the queue depth if change_queue_depth is set because the LLD may have to modify some internal resources, so I thought this would be the safest route. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> -v2 Limits change_queue_depth to only all luns of target by adding channel check while iterating for all luns of Scsi_Host. This is same as currently qla2xxx FC HBA does on QUEUE_FULL event. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] modify change_queue_depth to take in reason why it is being calledMike Christie
This patch modifies scsi_host_template->change_queue_depth so that it takes an argument indicating why it is being called. This will be used so that if a LLD needs to do some extra processing when handling queue fulls or later ramp ups, it can do so. This is a simple port of the drivers setting a change_queue_depth callback. In the patch I just have these LLDs adjust the queue depth if the user was requesting it. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> [Vasu.Dev: v2 Also converted pmcraid_change_queue_depth and then verified all modules compile using "make allmodconfig" for any new build warnings on X86_64. Updated original description after combing two original patches from Mike to make this patch git bisectable.] Signed-off-by: Vasu Dev <vasu.dev@intel.com> [jejb: fixed up 53c700] Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] pm8001: add SAS/SATA HBA driverjack wang
This driver supports PMC-Sierra PCIe SAS/SATA 8x6G SPC 8001 chip based host adapters. Signed-off-by: Jack Wang <jack_wang@usish.com> Signed-off-by: Lindar Liu <lindar_liu@usish.com> Signed-off-by: Tom Peng <tom_peng@usish.com> Signed-off-by: Kevin Ao <aoqingyun@usish.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] be2iscsi: Adding Ring Mode Wrb's V3Jayamohan Kallickal
This patch adds support for ring based wrbs Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] be2iscsi: Adding msix and mcc_rings V3Jayamohan Kallickal
This patch enables msix for be2iscsi. It also enables use of mcc_rings for fw commands. Since the mcc eq creation is dependent on msix I am sending as one patch Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: fix free of fc_rport_priv with timer pendingJoe Eykholt
Timer crashes were caused by freeing a struct fc_rport_priv with a timer pending, causing the timer facility list to be corrupted. This was during FC uplink flap tests with a lot of targets. After discovery, we were doing an PLOGI on an rdata that was in DELETE state but not yet removed from the lookup list. This moved the rdata from DELETE state to PLOGI state. If the PLOGI exchange allocation failed and needed to be retried, the timer scheduling could race with the free being done by fc_rport_work(). When fc_rport_login() is called on a rport in DELETE state, move it to a new state RESTART. In fc_rport_work, when handling a LOGO, STOPPED or FAILED event, look for restart state. In the RESTART case, don't take the rdata off the list and after the transport remote port is deleted and exchanges are reset, re-login to the remote port. Note that the new RESTART state also corrects a problem we had when re-discovering a port that had moved to DELETE state. In that case, a new rdata was created, but the old rdata would do an exchange manager reset affecting the FC_ID for both the new rdata and old rdata. With the new state, the new port isn't logged into until after any old exchanges are reset. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] fnic: Pad the unused bytes of CDB to 0sAbhijeet Joglekar
Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] fnic: Set max_cmd_len to driver supported CDB lengthAbhijeet Joglekar
Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] fnic: Process all cq entries per ISRAbhijeet Joglekar
Driver was processing a fixed max number of cq descriptors per ISR. For instance, for the SCSI IO queue, number of IOs processed per ISR were 8. If hardware writes 9 cq descriptors to the cq and generates an interrupt, driver would process only 8 descriptors and decrement the outstanding credit count by 8. Unless another interrupt event happens, the hw does not generate any additional interrupt. This results in the cq descriptor sitting in the queue without being procesed and can cause IO timeouts and aborts. Modify all ISR functions to process all queued cq descriptors in one shot. Since bulk of ELS frame processing is done in thread context and bulk of SCSI IO processing is done in soft ISR deferred context, the cycles spent in the ISR per cq descriptor is small. Signed-off-by: Herman Lee <hermlee@cisco.com> Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: fix memory corruption caused by double frees and bad error ↵Chris Leech
handling I was running into several different panics under stress, which I traced down to a few different possible slab corruption issues in error handling paths. I have not yet looked into why these exchange sends fail, but with these fixes my test system is much more stable under stress than before. fc_elsct_send() could fail and either leave the passed in frame intact (failure in fc_ct/els_fill) or the frame could have been freed if the failure was is fc_exch_seq_send(). The caller had no way of knowing, and there was a potential double free in the error handling in fc_fcp_rec(). Make fc_elsct_send() always free the frame before returning, and remove the fc_frame_free() call in fc_fcp_rec(). While fc_exch_seq_send() did always consume the frame, there were double free bugs in the error handling of fc_fcp_cmd_send() and fc_fcp_srr() as well. Numerous calls to error handling routines (fc_disc_error(), fc_lport_error(), fc_rport_error_retry() ) were passing in a frame pointer that had already been freed in the case of an error. I have changed the call sites to pass in a NULL pointer, but there may be more appropriate error codes to use. Question: Why do these error routines take a frame pointer anyway? I understand passing in a pointer encoded error to the response handlers, but the error routines take no action on a valid pointer and should never be called that way. Signed-off-by: Chris Leech <christopher.leech@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] fcoe: Call ndo_fcoe_enable/disable to turn FCoE feature on/off in LLDYi Zou
Calls ndo_fcoe_enabled() of the associated netdev upon creating the FCoE instance to make sure LLD has all necessary resources allocated and setup properly before passing FCoE traffic. Similarly, calls ndo_fcoe_disable() upon destroying the FCoE instance on the associated netdev to allow the LLD to release all allocated resources for FCoE. Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: Fix frags in frame exceeding SKB_MAX_FRAGS in fc_fcp_send_dataYi Zou
In case of sequence offload, in fc_fcp_send_data(), the skb_fill_page_info() called may end up adding more frags to the skb_shinfo(fp_skb(fp))->frags[], exceeding SKB_MAX_FRAGS, this eventually corrupts the memory. I am adding the FR_FRAME_SG_LEN back, but as SKB_MAX_FRAGS -1, leaving 1 for our fcoe_eof_crc page. And send will be broken into multiple large sends if the frame already contains more frags than skb handle. Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] fcoe: Use NETIF_F_FCOE_MTU flag to set up max frame size (lport->mfs)Yi Zou
Add a define of FCOE_MTU as 2158 bytes and use FCOE_MTU when the LLD is found to support NETIF_F_FCOE_MTU. The lport->mfs is then calculated out of the 2158 FCOE_MTU. Otherwise, we stick with the netdev->mtu, i.e., LAN MTU. Also, change the notification on NETDEV_CHANGEMTU event to bypass changing mfs when LAN MTU is changed if NETIF_F_FCOE_MTU is supported. Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] fcoe: initialize return value in fcoe_destroyMike Christie
When doing echo ethX > /sys..../destroy I am getting errors when the tear down succeeds. It looks like the reason for this is because the rc var is not getting set when the destruction works. This just sets it to zero. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: removes unused disc_work and ex_listVasu Dev
Reported-by: Alex Lyakas <alexl@mellanox.co.il> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: adds missing exch release for accepted RRQVasu Dev
Adds missing exch release when RRQ is accepted by calling fc_seq_ls_acc. Adds common exch release for fc_exch_els_rrq by use of out label. Reported-by: Alex Lyakas <alexl@mellanox.co.il> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: removes initializing fc_cpu_order and fc_cpu_mask per lportVasu Dev
Initializing these libfc globals per lport could mess up exch allocation/free for existing lport. So this patch moves their initialization to fc_setup_exch_mgr so that these globals gets initialized only once for libfc. Reported-by: Alex Lyakas <alexl@mellanox.co.il> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: don't WARN_ON in lport_timeout for RESET stateJoe Eykholt
It's possible and harmless to get FLOGI timeouts while in RESET state. Don't do a WARN_ON in that case. Also, split out the other WARN_ONs in fc_lport_timeout, so we can tell which one is hit by its line number. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: lport: fix minor documentation errorsJoe Eykholt
Fix minor errors. A debug message said an RLIR was received instead of ECHO. "Expected" was misspelled in several places. Fix a type cast from u32 to __be32. Rob, Some of these may have been also taken care of in your other doc cleanup patch. Feel free to fold them in. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: Fix wrong scsi return status under FC_DATA_UNDRUNYi Zou
This bug is exposed when there is a link flap in LLD. Particularly, when it happens right after a SCSI write command is sent out, no FCP_DATA is sent, causing fsp->status_code to be set as FC_DATA_UNDRUN in fc_fcp_complete_locked even no SCSI status is received. Consequently, fc_io_compl treats this as DID_OK. This results in SCSI returning successful to the initial I/O request even there is no DATA actually sent. Particularly, if you run an I/O tool w/ data verification on, the read back for verification is gonna fail. This is fixed here by checking when FC_DATA_UNDRUN happens, SCSI status is received w/ FC_SRB_RCV_STATUS set in fsp->state. Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: Remove unused fc_lport pointer from fc_fcp_pkt_abortRobert Love
This argument isn't used, let's not pass it into the routine. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc, fcoe: Don't EXPORT_SYMBOLS unnecessarilyRobert Love
These are a few functions that were not used by other modules. They did not need to be exported so this patch removes the EXPORT_SYMBOLS call for each. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] fcoe: remove redundant checking of netdev->netdev_opsYi Zou
Remove the redundant checking of netdev->netdev_ops as it will never be NULL. Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: fix ddp in fc_fcp for 0 xidYi Zou
xid 0 was used as an indication of invalid xid before but now xid 0 can be used as a valid exchange i. This patch fixes the ddp completion in fcp layer, i.e., in fc_fcp.c:fc_fcp_ddp_done() function, to make sure it does not use xid 0 for indication of an invalid xid, instead, it now uses use FC_XID_UNKNOWN for such indication. Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] libfc: fix typo in retry check on received PRLIJoe Eykholt
A received Fibre Channel ELS PRLI request contains a bit that indicates whether the remote port supports certain retry processing sequences. The test for this bit was somehow coded to use multiply instead of AND! This case would apply only for target mode operation, and it is unlikely to be noticed as an initiator. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] ibmvfc: Driver version 1.0.7Brian King
Bump driver version to 1.0.7. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] ibmvfc: Add FC Passthru supportBrian King
Adds support for FC passthru via BSG. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] ibmvfc: Fix adapter cancel flags for terminate_rport_ioBrian King
When issuing a Cancel to the virtual fibre channel adapter, the interface specifies a flags field for the client to indicate what kind of error recovery is being performed. Fix up these flags for terminate_rport_io to indicate an abort task set rather than a target reset. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>