It turns out most of the FIP work is now done from worker threads
or process context now, so there's no need to use a spin lock.
Change to use mutex instead of spin lock and delayed_work instead
of a timer.
This will make it nicer for the VN_port to VN_port feature that
will interact more with the libfc layers requiring that
spinlocks not be held.
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>
Add pre-zeroed space after the allocation for fc_rport_priv
for use by the lower-level driver.
This is primarily for VN2VN FIP mode, but could be used in
other ways someday.
The space required is specified in lport->rport_priv_size.
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>
To allow LLD to do lookups on rports without grabbing a mutex,
make them RCU-safe. The caller of lport->tt.rport_lookup will
have the choice of holding disc_mutex or the rcu_read_lock().
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>
This is per FC-BB-5 Annex-D recommendation and per that
if address checking fails then drop the frame.
FIP code paths are already doing this so only needed for fcoe
frames.
The src address checking is limited to only fip mode since
this might break non-fip mode used in p2p due to used OUI
based addressing in some p2p code paths, going forward FIP
will be the only mode, therefore limited this to only FIP
mode so that it won't break non-fip p2p mode for now.
-v2
Removes FCOE packet type checking since fcoe_rcv is
registered to receive only FCoE type packets from netdev
and it is already checked by netdev.
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>
The fc_fabric_logoff and fc_fabric_login are redundant
here after recently added fcoe_ctlr_link_down/up to
these functions, therefore this patch removes logoff
and login to only use link down and up here. This works
best for their current usages with fcoe DCB link down or up.
This also works well to avoid EIO errors when fcoe DCB link
goes down as lport state moves out of ready quickly from
fcoe_ctlr_link_down and that allows re-queuing timed out IOs
for this case also.
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>
In this case, sync IO fails with EIO(5) errors as:-
"Thread:1 System call error:5 - Input/output error (::pwrite() failed)".
This is due to IO time out while libfc doing link down processing
to block all rports and if timed out IO was at last retry
attempt then it fails to user with EIO error followed by
these log messages.
[77848.612169] host2: rport bf0015: Delete port
[77848.612221] host2: rport e10aef: work delete
[77848.612232] host2: rport e10002: work event 3
[77848.612422] sd 2:0:1:1: [sdi] Unhandled error code
[77848.612426] sd 2:0:1:1: [sdi] Result: hostbyte=DID_ERROR
driverbyte=DRIVER_OK
[77848.612431] sd 2:0:1:1: [sdi] CDB: Write(10): 2a 00 00 00 11 20 00 00 20 00
[77848.612445] end_request: I/O error, dev sdi, sector 4384
[77848.612553] sd 2:0:1:2: [sdj] Unhandled error code
To fix these EIO errors, such timed out incomplete IOs needs
to be re-queued without counting retry attempt and this patch
does that using DID_REQUEUE scsi code.
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>
Analyzing fcoe with sparse currently fails. This is because struct
fcoe_rcv_info contains two enum members that have been declared with
__attribute__((packed)). Apparently gcc honors this attribute while sparse
ignores it. The result is that sizeof(struct fcoe_rcv_info)
== sizeof(struct sk_buff::cb) == 48 on a 64-bit system according to gcc, but
not according to sparse. The patch below modifies the definition of
struct fcoe_rcv_info such that gcc and sparse interpret this structure
definition in the same way. The current sparse output is as follows:
$ cd linux-2.6.34
$ make C=2 M=drivers/scsi/fcoe modules
CHECK drivers/scsi/fcoe/fcoe.c
include/scsi/fc_frame.h:81:9: error: invalid bitfield width, -1.
CC [M] drivers/scsi/fcoe/fcoe.o
CHECK drivers/scsi/fcoe/libfcoe.c
include/scsi/fc_frame.h:81:9: error: invalid bitfield width, -1.
drivers/scsi/fcoe/libfcoe.c:56:37: error: invalid initializer
Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com>
Cc: jeykholt@cisco.com
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This is exposed by a mpio test using EMC CLARiiON targets when LUN
tresspassing happens, the burst length from the XFER_READY for the
MODE SELECT(10) is 19 bytes, much smaller than FC_MIN_MAX_PAYLOAD as
256 bytes. This patch removes the related two WARN_ON()s.
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>
This patch is to add next generation of Dell iSCSI PowerVault
controller MD36xxi into RDAC device list.
Signed-off-by: Yanqing Liu <Yanqing_Liu@Dell.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
The check to test that "bus_no" was valid came after we had already used
it as an array offset. This patch moves it forward.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
FCoE Related Fixes
- Correct find-next-FCF routine so that it searches at next FCF rather
than current one.
- Enhanced round-robin FCF failover algorithm to re-start on "New FCF"
async event
- Update the manner in which we look at FCFs while they may be in
their discovery state.
- Use LPFC_FCOE_NULL_VID macro when checkinf for valid vlan_id for FCF
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
- BSG interface related:
- Fix node reference count if node is active
- Warn if we're overwriting an active CT context
- Discovery related:
- Clear "Ignore Reg Login" flag when purging mailbox queue
- Pay attention to return code for fc_block_scsi_eh()
- Stall device loss code if we're almost done when it fires
(we're logged in, but PRLI is outstanding)
- Bugs
- Correct DIF code for endianness issues
- Correct where we had missed points to check txq on i/o
completion/cleanup
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Setting the resource type in the ipr_update_res_entry function was incorrect in
that the top 4 bits were masked off. The assignment has been updated to no
longer mask those bits.
Then, two new attributes were added to allow the user space utilities to more
easily get information. The resource_type sdev attribute is set for all devices
in the adapter's configuration table and indicates the type of device. The
fw_type shost attribute indicates the firmware type supported by the adapter.
Finally, the resource_path attribute was changed to be mode S_IRUGO.
Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
The method of transitioning to operational for new adapters includes using
initialization stages. The current stage is indicated via a register read.
The final good stage in the sequence is "operational" but does not necessarily
indicate that the driver can proceed. There is another bit that gets set in the
adapter->host interrupt register when the adapter has completed enough of its
bringup such that it can accept commands. The driver was not checking that
bit before proceeding which led to intermittent errors and adapter resets.
The fix is to check the "transition to operational" bit in the interrupt
register after detecting that the initialization stage is "operational" and
only proceed if both are set.
Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
be2iscsi driver should #include linux/if_ether.h since it uses
sysfs_format_mac().
It should also depend on NET since it selects SCSI_ISCSI_ATTRS,
which depends on NET.
These changes fix a build error when CONFIG_NET is not enabled:
ERROR: "sysfs_format_mac" [drivers/scsi/be2iscsi/be2iscsi.ko] undefined!
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch fixes a bug where the buffer was being freed as soon as
submission to HW is done.
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch removes a Debug Print in the IO path
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch limits max_xmit_length to 64K incase older
utilities are used
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch ensures that the same ITT is maintained across
all login pdu's
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
These changes allow the driver to support crashdump. We need to reset the
chip incase of a crashdump
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch frees tags that are already allocated in case of
failure
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch handles request_irq failures by properly cleaning up
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
hwi_enable_intr need not return any value. This patch fixes the
that and removes code designed to handle a failure return value
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch frees up the allocated cid and returns error if allocation
of tag fails.
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch passes on the value returned by
beiscsi_open_conn
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Fixing some functions return values that did not match with
the possible return values
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch fixes the return values as per comment from Mike Christie
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
The latest checkpatch.pl throws some new warnings. Fixing it
to get rid of a bunch of warnings
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Commit
commit 2c3c8bea60
Author: Chris Wright <chrisw@sous-sol.org>
Date: Wed May 12 18:28:57 2010 -0700
sysfs: add struct file* to bin_attr callbacks
Added an extra struct file * parameter at the beginning, which the
arcmsr binary attribute additions didn't have. Fix this to prevent
nasty crashes.
Cc: Nick Cheng <nick.cheng@areca.com.tw>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch removes malloc(), free(), and printf() wrappers from the aic7xxx
SCSI driver. I didn't use pr_debug for printf because of some 'clever' uses of
printf don't compile with the pr_debug. I didn't fix the overeager uses of
GFP_ATOMIC either because I wanted to keep this patch as simple as possible.
[jejb:fixed up checkpatch errors and fixed up missed conversion]
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Handle one H/W Interrupt at a time to prevent holding off H/W lock
for longer period of time.
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Fixed the DMA allocated memory freeing which wasn't taken care
in many cases.
Signed-off-by: Prasanna Mumbai <prasanna.mumbai@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Handle fw_state "auto discovery in progress" correctly
to avoid marking adapter as offline.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Once the device goes *missing*, driver blocks the session
ie iscsi_block_session() to stall the I/O. So after device
comes back *online*, driver needs to unblock the session ie
iscsi_unblock_session(), else I/Os will fail even if
ddb_state is ONLINE.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
If fw ddb state is ACTIVE mark driver ddb stat as ONLINE and
unblock iscsi session.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
- Add debugfs support to obtain firmware trace, driver trace
and read/write to registers.
- debugfs hierarchy:
/sys/kernel/debug/bfa/host#
where the host number corresponds to the one under /sys/class/scsi_host/host#
- Following are the new debugfs entries added:
drvtrc: collect current driver trace
fwtrc: collect current firmware trace.
fwsave: collect last saved fw trace as a result of firmware crash.
regwr: write one word to chip register
regrd: read one or more words from chip register.
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch fixes 3 bugs in vport create/delete.
1) Replace scsi_add_host() with scsi_add_host_with_dma()
2) Fix rmmod hang when there are vports configured. This is due to a race
condition between the workqueue destroy in pci remove context and the vport
delete works being handled. The fix is to use a counter to track the
vport delete work, so that workqueue destroy will not be called until all
configured vports are deleted from workqueue.
3) Fix rmmmod crash when there are PBC vport configured. PBC is not allowed
to be deleted dynamically. However, if someone try to delete it, it leaves the
vport is wrong state. The fix is to restore the vport back to original state
when the attempt to delete pbc vport delete is failed.
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch fixes the issue of passing wrong argument to callback function.
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This patch adds ioc state checking while enabling a port.
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Joe Eykholt