Commit graph

6941 commits

Author SHA1 Message Date
Krishna Gudipati
4e78efefa3 [SCSI] bfa: IOC fwtrace save logic & state machine fixes.
- Move fw trace save logic to bfa_ioc_sm_fail_entry(),
  so that fw trace is saved irrespective of the cause of the failure.
- Make bfa_ioc_sm_fail() a failure parking state.
- Rename bfa_ioc_sm_initfail() to a more appropriate bfa_ioc_sm_fail_retry()
  as it is no longer a parking state.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:37:11 -06:00
Maggie Zhang
da99dcc98d [SCSI] bfa: remove unused functions and misc cleanups
Remove unused functions and fix checkpatch errors. Misc cleanups in
comment and formatting.

Signed-off-by: Maggie Zhang <xmzhang@brocade.com>
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:32:58 -06:00
Maggie Zhang
f16a17507b [SCSI] bfa: remove all OS wrappers
Remove OS wrapper functions/macros, and as a result remove bfa_os_inc.h.

Signed-off-by: Maggie Zhang <xmzhang@brocade.com>
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:32:56 -06:00
Maggie Zhang
f314878ab9 [SCSI] bfa: remove all SCSI IO callbacks
Remove SCSI IO callbacks, and as a result remove bfa_cb_ioim.h.

Signed-off-by: Maggie Zhang <xmzhang@brocade.com>
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:32:47 -06:00
Maggie Zhang
e3e7d3eebb [SCSI] bfa: scatter gather processing change
Modified scatter gather processing to use the kernel provided
scsi_for_each_sg() macro.

1) Instead of allocating and setting up sgpg in bfa_ioim_sge_setup(),
   we only do allocation.  As a result, we remove
   bfa_ioim_sgpg_setup() and rename bfa_ioim_sge_setup() to
   bfa_ioim_sgpg_alloc().

2) bfa_ioim_send_ioreq() call scsi_for_each_sg() to handle both inline
   and sgpg setup.

Signed-off-by: Maggie Zhang <xmzhang@brocade.com>
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:32:45 -06:00
Maggie Zhang
b77ee1fb10 [SCSI] bfa: remove a file with small size
Removed bfa_drv.c, merged it to bfa_core.c and modified Makefile.

Signed-off-by: Maggie Zhang <xmzhang@brocade.com>
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:32:44 -06:00
Maggie Zhang
f7f73812e9 [SCSI] bfa: clean up one line functions
Cleaned up one line functions.

Signed-off-by: Maggie Zhang <xmzhang@brocade.com>
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:32:43 -06:00
Maggie Zhang
df0f1933eb [SCSI] bfa: remove unused and empty functions
Removed unused and empty functions.

Signed-off-by: Maggie Zhang <xmzhang@brocade.com>
Signed-off-by: Jing Huang <xmzhang@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:50 -06:00
Robert Jennings
402c6eec1b [SCSI] ibmvfc: Improve ibmvfc_async_desc memory layout
By changing field ordering we can avoid a couple of memory holes in
the tables that use the ibmvfc_async_desc structure.

Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:49 -06:00
Stephen Hemminger
058548ae23 [SCSI] iscsi: add module alias
Since iscsi transport can be built as a module and uses netlink socket
to communicate. The module should have an alias to autoload when socket
of NETLINK_ISCSI type is requested.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:48 -06:00
Vikas Chaudhary
6b57b15970 [SCSI] qla4xxx: Update driver version to 5.02.00-k5
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:44 -06:00
Vikas Chaudhary
7d01d0698f [SCSI] qla4xxx: Updated the Copyright header
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:43 -06:00
Vikas Chaudhary
3930b8c1f3 [SCSI] qla4xxx: do not reset hba if ql4xdontresethba is set
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:43 -06:00
Lalit Chandivade
d56a1f7b39 [SCSI] qla4xxx: do not check for fw hung if reset retry is in progress
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:42 -06:00
Prasanna Mumbai
e128271b7b [SCSI] qla4xxx: cache new IP address acquired via DHCP
Prior to firmware state change from ACQUIRING to READY, an
0x8029 AEN is received. Added code to check previous state
being ACQUIRING in order to update the ip address in the driver.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Prasanna Mumbai <prasanna.mumbai@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:41 -06:00
Lalit Chandivade
4cd83cbef8 [SCSI] qla4xxx: Fail initialization if qla4_8xxx_pci_mem_write_2M fails
Since if fw load is failing, running on incomplete fw load would
be fatal.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:41 -06:00
Lalit Chandivade
fe998527e3 [SCSI] qla4xxx: put device in FAILED state for 82XX initialization failure
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:40 -06:00
Lalit Chandivade
e6b07df8b0 [SCSI] qla4xxx: do not process interrupt unconditionally
in mailbox command do not process interrupt unconditionally,
process interrupt only in polling mode

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:38 -06:00
Karen Higgins
6790d4fecf [SCSI] qla4xxx: use correct fw_ddb_index in abort task
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Karen Higgins <karen.higgins@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:37 -06:00
Swapnil Nagle
a1fc26baae [SCSI] qla4xxx: memory wedge with peg_halt test in loop
Signed-off-by: Swapnil Nagle <swapnil.nagle@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:36 -06:00
Shyam Sundar
61391d314e [SCSI] qla4xxx: initialize MSI in correct way
IRQF_SHARED flag should not be set when calling request_irq for MSI since
this interrupt mechanism cannot be shared like standard INTx

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Shyam Sundar <shyam.sundar@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:35 -06:00
Vikas Chaudhary
3e1350c4dc [SCSI] qla4xxx: Drop use of IRQF_DISABLE
IRQF_DISABLE flag is deprecated and this flag is a NOOP in kernel.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:35 -06:00
Joe Eykholt
5f0e385fda [SCSI] libfc: fix statistics for FCP input/output megabytes
The statistics for InputMegabytes and OutputMegabytes are
misnamed.  They're accumulating bytes, not megabytes.

The statistic returned via /sys must be in megabytes, however,
which is what the HBA-API wants.  The FCP code needs to accumulate
it in bytes and then divide by 1,000,000 (not 2^20) before it
presented via sysfs.

This affects fcoe.ko only, not fnic.  The fnic driver
correctly by accumulating bytes and then converts to megabytes.

I checked that libhbalinux is using the /sys file directly without
conversion.

BTW, qla2xxx does divide by 2^20, which I'm not fixing here.

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>
2010-12-21 12:24:34 -06:00
Joe Eykholt
ba9cd5d095 [SCSI] libfcoe: change fip_select to return new FCF
Neaten several calls to fip_select() by having it return the
pointer to the new FCF.

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>
2010-12-21 12:24:34 -06:00
Joe Eykholt
981c1154b2 [SCSI] libfcoe: reorder FCF list to put latest advertiser first
When there are several FCFs to choose from, the one most likely
to accept a FLOGI on certian switches is the one that last
answered a multicast solicit.

So, when receiving an advertisement, move the FCF to the front
of the list so that it gets chosen first among those with the
same priority.

Without this, more FLOGIs need to be sent in a test with
multiple FCFs and a switch in NPV mode, but it still
eventually finds one that accepts the FLOGI.

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>
2010-12-21 12:24:33 -06:00
Joe Eykholt
9069f5c433 [SCSI] libfcoe: add debug message for FCF destination MAC
When multiple FCFs to the same fabric exist, the debug messages
all look alike.   Change the message to include the MAC address.

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>
2010-12-21 12:24:33 -06:00
Joe Eykholt
794d98e77f [SCSI] libfcoe: retry rejected FLOGI to another FCF if possible
Switches using multiple-FCFs may reject FLOGI in order to
balance the load between multiple FCFs.  Even though the FCF
was available, it may have more load at the point we actually
send the FLOGI.

If the FLOGI fails, select a different FCF
if possible, among those with the same priority.  If no other
FCF is available, just deliver the reject to libfc for retry.

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>
2010-12-21 12:24:32 -06:00
Joe Eykholt
b69ae0ae3f [SCSI] libfcoe: fix checking of conflicting fabrics in fcoe_ctlr_select()
The check for conflicting fabrics in fcoe_ctlr_select()
ignores any FCFs that aren't usable.  This is a minor
problem now but becomes more pronounced after later patches.

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>
2010-12-21 12:24:32 -06:00
Joe Eykholt
c47036a7cd [SCSI] libfcoe: move some timer code to make it reusable.
Move some of the code in fcoe_ctlr_timer_work() to
fcoe_ctlr_select() so that it can be shared
with another function in a forthcoming patch.

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>
2010-12-21 12:24:29 -06:00
Joe Eykholt
69316ee2e3 [SCSI] libfcoe: update FIP FCF announcements
Move the announcement code to a separate function for reuse in
a forthcoming patch.

For messages regarding FCF timeout and selection, use the
previously-announced FCF MAC address (dest_addr) in the fcoe_ctlr struct.
Only print (announce) the FCF if it is new.   Print MAC for
timed-out or deselected FCFs.

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>
2010-12-21 12:24:28 -06:00
Yi Zou
b5fe5e953c [SCSI] libfc: fix fc_tm_done not freeing the allocated fsp pkt
Frame should be freed in fc_tm_done, this is an updated patch on the one
initially submitted by Hillf Danton.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
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>
2010-12-21 12:24:27 -06:00
Yi Zou
3a91090fe0 [SCSI] libfc: the timeout for the REC itself is 2 * R_A_TOV_els
The timeout for the exchange carrying REC itself is 2 * R_A_TOV_els.

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>
2010-12-21 12:24:27 -06:00
Yi Zou
ea3e2e72ee [SCSI] libfc: fix exchange being deleted when the abort itself is timed out
Should not continue when the abort itself is being timeout since in that case
the exchange will be deleted and relesased. We still want to call the
associated response handler to let the layer, e.g., fcp, know the exchange
itself is being timed out.

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>
2010-12-21 12:24:26 -06:00
Yi Zou
d889b30a91 [SCSI] libfc: do not fc_io_compl on fsp w/o any scsi_cmnd associated
Do not call fc_io_compl() on fsp w/o any scsi_cmnd, e.g., lun reset is built
inside fc_fcp, not from a scsi command from queuecommnd from scsi-ml, so in
in case target is buggy that is invalid flags in the FCP_RSP, as we have seen
in some SAN Blaze target where all bits in flags are 0, we do not want to call
io_compl on this fsp.

[ Comment block added by Robert Love ]

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>
2010-12-21 12:24:25 -06:00
Yi Zou
9b90dc80ba [SCSI] libfc: add print of exchange id for debugging fc_fcp
This is very helpful to match up the corresponding exchange to the actual I/O
described by the fsp, particularly when you do a side-by-side comparison of
the syslog with your trace.

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>
2010-12-21 12:24:25 -06:00
Joe Perches
11aa99001a [SCSI] drivers/scsi/fcoe: Update WARN uses
Add missing newlines.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:24 -06:00
Hillf Danton
0e9e3d3b15 [SCSI] libfc: fix memory leakage in remote port
There seems rdata should get put before return.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:24 -06:00
Hillf Danton
72e0daad55 [SCSI] libfc: fix memory leakage in local port
There seems info should get freed when error encountered.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:23 -06:00
Hillf Danton
2d6dfb005e [SCSI] libfc: fix memory leakage in local port
There seems info should get freed when error encountered.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:23 -06:00
john fastabend
05fee645e9 [SCSI] libfc: remove tgt_flags from fc_fcp_pkt struct
We can easily remove the tgt_flags from fc_fcp_pkt struct
and use rpriv->tgt_flags directly where needed.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:22 -06:00
john fastabend
e0883a3c3e [SCSI] libfc: use rport timeout values for fcp recovery
Use the rport value for rec_tov for timeout values when
sending fcp commands. Currently, defaults are being used
which may or may not match the advertised values.

The default may cause i/o to timeout on networks that
set this value larger then the default value. To make
the timeout more configurable in the non-REC mode we
remove the FC_SCSI_ER_TIMEOUT completely allowing the
scsi-ml to do the timeout. This removes an unneeded
timer and allows the i/o timeout to be configured
using the scsi-ml knobs.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:22 -06:00
john fastabend
ac17ea8d7d [SCSI] libfc: incorrect scsi host byte codes returned to scsi-ml
The fcp packet recovery handler fc_fcp_recover() is called
when errors occurr in a fcp session. Currently it is
generically setting the status code to FC_CMD_RECOVERY for
all error types. This results in DID_BUS_BUSY errors
being returned to the scsi-ml.

DID_BUS_BUSY errors indicate "BUS stayed busy through time
out period" according to scsi.h. Many of the error reported
by fc_rcp_recovery() are pkt errors. Here we update
fc_fcp_recovery to use better host byte codes.

With certain FAST FAIL flags set DID_BUS_BUSY and DID_ERROR
will have different behaviors this was causing dm multipath
to fail quickly in some cases where a retry would be a
better action.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:21 -06:00
Hillf Danton
e90ff5ef0a [SCSI] libfc: fix stats computation in fc_queuecommand()
There seems accumulation needed.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:21 -06:00
Hillf Danton
530994d69e [SCSI] libfc: fix mem leak in fc_seq_assign()
There is a typo cleaned, which triggers memory leakage.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:20 -06:00
Robert Love
3c2c3bf23c [SCSI] libfc: Fix incorrect locking and unlocking in FCP
The error handler grabs the si->scsi_queue_lock, but
in the case where the fsp pointer is NULL it releases
the scsi_host lock. This can lead to a variety of
system hangs depending on which is used first- the
scsi_host lock or the scsi_queue_lock.

This patch simply unlocks the correct lock when fcp
is NULL.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:20 -06:00
Hillf Danton
2034c19ce8 [SCSI] libfc: tune fc_exch_em_alloc() to be O(2)
For allocating new exch from pool,  scanning for free slot in exch
array fluctuates when exch pool is close to exhaustion.

The fluctuation is smoothed, and the scan looks to be O(2).

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:19 -06:00
Hillf Danton
8236554a27 [SCSI] libfc: fix mem leak in fc_exch_recv_seq_resp()
There seems that ep should get released, or it will no longer get freed.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:19 -06:00
Yi Zou
80e736f8a3 [SCSI] libfc: fix NULL pointer dereference bug in fc_fcp_pkt_release
This happens when then tearing down the fcoe interface with active I/O.
The back trace shows dead000000200200 in RAX, i.e., LIST_POISON2, indicating
that the fsp is already being dequeued, which is probably why no complaining
was seen in fc_fcp_destroy() about outstanding fsp not freed, since we dequeue
it in the end of fc_io_compl() before releasing it. The bug is due to the
fact that we have already destroyed lport's scsi_pkt_pool while on-going i/o
is still accessing it through fc_fcp_pkt_release(), like this trace or the
similar code path from scsi-ml to fc_eh_abort, etc. This is fixed by moving
the fc_fcp_destroy() after lport is detached from scsi-ml since fc_fcp_destroy
is supposed to called only once where no lport lock is taken, otherwise the
fc_fcp_pkt_release() would have to grab the lport lock.

 BUG: unable to handle kernel NULL pointer dereference at (null)
 .......
 RIP: 0010:[<0000000000000000>]
 [<(null)>] (null)
 RSP: 0018:ffff8803270f7b88  EFLAGS: 00010282
 RAX: dead000000200200 RBX: ffff880197d2fbc0 RCX: 0000000000005908
 RDX: ffff880195ea6d08 RSI: 0000000000000282 RDI: ffff880180f4fec0
 RBP: ffff8803270f7bc0 R08: ffff880197d2fbe0 R09: 0000000000000000
 R10: ffff88032867f090 R11: 0000000000000000 R12: ffff880195ea6d08
 R13: 0000000000000282 R14: ffff880180f4fec0 R15: 0000000000000000
 FS:  0000000000000000(0000) GS:ffff8801b5820000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
 CR2: 0000000000000000 CR3: 00000001a6eae000 CR4: 00000000000006e0
 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
 Process fc_rport_eq (pid: 5278, threadinfo ffff8803270f6000, task ffff880326254ab0)
 Stack:
 ffffffffa02c39ca ffff8803270f7ba0 ffff88019331cbc0 ffff880197d2fbc0
 0000000000000000 ffff8801a8c895e0 ffff8801a8c895e0 ffff8803270f7c10
 ffffffffa02c4962 ffff8803270f7be0 ffffffff814c94ab ffff8803270f7c10
 Call Trace:
 [<ffffffffa02c39ca>] ? fc_io_compl+0x10a/0x530 [libfc]
 [<ffffffffa02c4962>] fc_fcp_complete_locked+0x72/0x150 [libfc]
 [<ffffffff814c94ab>] ? _spin_unlock_bh+0x1b/0x20
 [<ffffffffa02b98ff>] ? fc_exch_done+0x3f/0x60 [libfc]
 [<ffffffffa02c4a8f>] fc_fcp_retry_cmd+0x4f/0x60 [libfc]
 [<ffffffffa02c6150>] fc_fcp_recv+0x9b0/0xc30 [libfc]
 [<ffffffff8106ba7a>] ? _call_console_drivers+0x4a/0x80
 [<ffffffff8107d5ec>] ? lock_timer_base+0x3c/0x70
 [<ffffffff8107e06b>] ? try_to_del_timer_sync+0x7b/0xe0
 [<ffffffffa02b9dcf>] fc_exch_mgr_reset+0x1df/0x250 [libfc]
 [<ffffffffa02c57a0>] ? fc_fcp_recv+0x0/0xc30 [libfc]
 [<ffffffffa02c1042>] fc_rport_work+0xf2/0x4e0 [libfc]
 [<ffffffff8109203e>] ? prepare_to_wait+0x4e/0x80
 [<ffffffffa02c0f50>] ? fc_rport_work+0x0/0x4e0 [libfc]
 [<ffffffff8108c6c0>] worker_thread+0x170/0x2a0
 [<ffffffff81091d50>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff8108c550>] ? worker_thread+0x0/0x2a0
 [<ffffffff810919e6>] kthread+0x96/0xa0
 [<ffffffff810141ca>] child_rip+0xa/0x20
 [<ffffffff81091950>] ? kthread+0x0/0xa0
 [<ffffffff810141c0>] ? child_rip+0x0/0x20
 Code:
 Bad RIP value.

 RIP
 [<(null)>] (null)
 RSP <ffff8803270f7b88>
 CR2: 0000000000000000

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>
2010-12-21 12:24:18 -06:00
Hillf Danton
12137f5c28 [SCSI] libfc: remove define of fc_seq_exch in fc_exch.c
The define for fc_seq_exch is unnecessary, since it also appears in scsi/libfc.h

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:18 -06:00
Maggie
50444a3400 [SCSI] bfa: fix endianess sparse check warnings
First round of fix for the endianess check warnings from make C=2 CF="-D__CHECK_ENDIAN__".

Signed-off-by: Maggie <xmzhang@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-21 12:24:17 -06:00