openwrt/staging/blogic.git
15 years ago[SCSI] libfcoe: fip: use SCSI host number to identify debug messages.
Joe Eykholt [Tue, 3 Nov 2009 19:48:16 +0000 (11:48 -0800)]
[SCSI] libfcoe: fip: use SCSI host number to identify debug messages.

Use scsi host number to identify debug messages.
Previously, no instance information was given, so if multiple
ports were active, it became confusing.
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>
15 years ago[SCSI] libfcoe: Allow FIP to be disabled by the driver
Joe Eykholt [Tue, 3 Nov 2009 19:48:11 +0000 (11:48 -0800)]
[SCSI] libfcoe: Allow FIP to be disabled by the driver

Allow FIP to be disabled by the driver for devices
that want to use libfcoe in non-FIP mode.

The driver merely sets the fcoe_ctlr mode to the state which
should be entered when the link comes up.  The default is auto.
No change is needed for fcoe.c which uses auto mode.

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>
15 years ago[SCSI] libfc: adds can_queue ramp up
Vasu Dev [Tue, 3 Nov 2009 19:48:06 +0000 (11:48 -0800)]
[SCSI] libfc: adds can_queue ramp up

Adds last_can_queue_ramp_down_time and updates this on every
ramp down. If last_can_queue_ramp_down_time is not zero then
do ramp up on any IO completion in added fc_fcp_can_queue_ramp_up.

Reset last_can_queue_ramp_down_time to zero once can_queue
is ramped up to added max_can_queue limit, this is to avoid any
more ramp up attempts on subsequent IO completion.

The ramp down and up are skipped for FC_CAN_QUEUE_PERIOD
to avoid infrequent changes to can_queue, this required
keeping track of ramp up time also in last_can_queue_ramp_up_time.

Adds code to ramp down can_queue if lp->qfull is set, with added
new ramp up code the can_queue will be increased after
FC_CAN_QUEUE_PERIOD, therefore it is safe to do ramp down
without fsp in this case and will avoid thrash. This required
fc_fcp_can_queue_ramp_down locking change so that it can be
called with Scsi_Host lock held.

Removes si->throttled and fsp state FC_SRB_NOMEM, not needed with
added ramp up 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>
15 years ago[SCSI] libfc: reduce can_queue for all FCP frame allocation failures
Vasu Dev [Tue, 3 Nov 2009 19:48:00 +0000 (11:48 -0800)]
[SCSI] libfc: reduce can_queue for all FCP frame allocation failures

Currently can_queue is reduced only if frame alloc fails
during fc_fcp_send_data but frame alloc can fail at several
other places in FCP data path and can_queue needs to be
reduced for any FCP frame alloc failure.

This patch adds fc_fcp_frame_alloc for all FCP frame allocations
and if fc_frame_alloc fails in fc_fcp_frame_alloc then reduce
can_queue in fc_fcp_frame_alloc, this will reduce can_queue for
all FCP frame alloc failures.

This required moving fc_fcp_reduce_can_queue up, to build without
adding its prototype. Also renamed fc_fcp_reduce_can_queue to
fc_fcp_can_queue_ramp_down.

Removes fc_fcp_reduce_can_queue calling from fc_fcp_recv since
not needed with added fc_fcp_frame_alloc reducing can_queue.

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>
15 years ago[SCSI] fcoe, libfc: use single frame allocation API
Vasu Dev [Tue, 3 Nov 2009 19:47:55 +0000 (11:47 -0800)]
[SCSI] fcoe, libfc: use single frame allocation API

Cleans up frame allocation APIs to have just single fc_frame_alloc API.

Removes _fc_frame_alloc, renames __fc_frame_alloc to _fc_frame_alloc.

Modifies fc_fcp_send_data for removed _fc_frame_alloc, fc_fcp_send_data
was the only user of removed _fc_frame_alloc.

Also Adds check in fc_frame_alloc to do mod by 4 for only non-zero
len value.

This patch is prep work to fix can_queue reducing in next patch.
Single fc_frame_alloc API helps in fixing can_queue reducing in
next patch.

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>
15 years ago[SCSI] fcoe: Formatting cleanups and commenting
Robert Love [Tue, 3 Nov 2009 19:47:50 +0000 (11:47 -0800)]
[SCSI] fcoe: Formatting cleanups and commenting

Added kernel-doc comment blocks to all structures and functions.

Renamed fc_lport instances rom lp to lport to be inline with our
naming convention.

Renamed all misnamed net_device instances to netdev to be inline
with our naming convention.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfcoe: formatting and comment cleanups
Robert Love [Tue, 3 Nov 2009 19:47:45 +0000 (11:47 -0800)]
[SCSI] libfcoe: formatting and comment cleanups

Ensures that there are kernel-doc style comments for all
routines and structures.

There were also a few instances of fc_lport's named 'lp'
which were switched to 'lport' as per the libfc/libfcoe/fcoe
naming convention.

Also, emacs 'indent-region' and 'tabify' were ran on libfcoe.c.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: Formatting cleanups across libfc
Robert Love [Tue, 3 Nov 2009 19:47:39 +0000 (11:47 -0800)]
[SCSI] libfc: Formatting cleanups across libfc

This patch makes a variety of cleanup changes to all libfc files.

This patch adds kernel-doc headers to all functions lacking them
and attempts to better format existing headers. It also add kernel-doc
headers to structures.

This patch ensures that the current naming conventions for local ports,
remote ports and remote port private data is upheld in the following
manner.

struct               instance (i.e. variable name)
--------------------------------------------------
fc_lport                      lport
fc_rport                      rport
fc_rport_libfc_priv           rpriv
fc_rport_priv                 rdata

I also renamed dns_rp and ptp_rp to dns_rdata and ptp_rdata
respectively.

I used emacs 'indent-region' and 'tabify' on all libfc files
to correct spacing alignments.

I feel sorry for anyone attempting to review this patch.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc, fcoe: Add FC passthrough support
Steve Ma [Tue, 3 Nov 2009 19:47:34 +0000 (11:47 -0800)]
[SCSI] libfc, fcoe: Add FC passthrough support

This is the Open-FCoE implementation of the FC
passthrough support via bsg interface.

Passthrough support is added to both N_Ports and
VN_Ports.

Signed-off-by: Steve Ma <steve.ma@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: Add routine to copy data from a buffer to a SG list
Robert Love [Tue, 3 Nov 2009 19:47:28 +0000 (11:47 -0800)]
[SCSI] libfc: Add routine to copy data from a buffer to a SG list

When handling the multi-frame responses of fc pass-thru requests,
a code segment similar to fc_fcp_recv_data (routine to receive
inbound SCSI data) is used in the response handler. This patch
is to add a routine, called fc_copy_buffer_to_sglist(), to handle
the common function of copying data from a buffer to a scatter-
gather list in order to avoid code duplication.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: Export FC headers
Robert Love [Tue, 3 Nov 2009 19:47:23 +0000 (11:47 -0800)]
[SCSI] libfc: Export FC headers

Export fc_els.h, fc_fs.h, fc_gs.h and fc_ns.h so that they
may be used by applications.

This will be needed for FC Passthrough applications like fcping,
but could be used by other applications.

Fix to include <linux/types.h> to exported files provided 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>
15 years ago[SCSI] fcoe: vport symbolic name support
Chris Leech [Tue, 3 Nov 2009 19:47:18 +0000 (11:47 -0800)]
[SCSI] fcoe: vport symbolic name support

Allow a vport specific string to be appended to the port symbolic
name.  The new symbolic name is sent to the name server after it
is set.

This currently messes with libhbalinux, which is looking for
the fcoe "fcoe <ver> over <ethX>" string and expects whatever
comes after the "over" to be a network interface name only.

Adds an EXPORT_SYMBOL to libfc for fc_frame_alloc_fill, which is
needed to allow fcoe to allocate a frame of variable length for
the RSPN request.

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>
15 years ago[SCSI] libfc: combine name server registration request functions
Chris Leech [Tue, 3 Nov 2009 19:47:12 +0000 (11:47 -0800)]
[SCSI] libfc: combine name server registration request functions

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>
15 years ago[SCSI] libfc: combine name server registration response handlers
Chris Leech [Tue, 3 Nov 2009 19:47:07 +0000 (11:47 -0800)]
[SCSI] libfc: combine name server registration response handlers

They all do the same thing, so combine them into a single function.

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>
15 years ago[SCSI] libfc: Register Symbolic Port Name (RSPN_ID)
Chris Leech [Tue, 3 Nov 2009 19:47:01 +0000 (11:47 -0800)]
[SCSI] libfc: Register Symbolic Port Name (RSPN_ID)

Register the fc_host symbolic name as the symbolic port name
with the fabric name server.

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>
15 years ago[SCSI] libfc: Register Symbolic Node Name (RSNN_NN)
Chris Leech [Tue, 3 Nov 2009 19:46:56 +0000 (11:46 -0800)]
[SCSI] libfc: Register Symbolic Node Name (RSNN_NN)

Register the fc_host symbolic name as the symbolic node name
with the fabric name server.

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>
15 years ago[SCSI] libfc: RNN_ID may be required before RSNN_NN with some switches
Chris Leech [Tue, 3 Nov 2009 19:46:51 +0000 (11:46 -0800)]
[SCSI] libfc: RNN_ID may be required before RSNN_NN with some switches

One could interpret FC-GS-5 to say that an explicit RNN_ID is required
before RSNN_NN is allowed to succeed, which is why RNN_ID was not obsoleted
along with RPN_ID acording to this document:
ftp://ftp.t11.org/t11/member/fc/gs-5/05-546v2.pdf

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>
15 years ago[SCSI] libfc: RPN_ID is obsolete and unnecessary
Chris Leech [Tue, 3 Nov 2009 19:46:46 +0000 (11:46 -0800)]
[SCSI] libfc: RPN_ID is obsolete and unnecessary

RPN_ID has been obsolete per FC-GS-5 for several years.  The port name is
registered implicitly as part of FLOGI, and it is undesirable for ports to
change a registered port name using RPN_ID while logged into the fabric.

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>
15 years ago[SCSI] fcoe: NPIV vport create/destroy
Chris Leech [Tue, 3 Nov 2009 19:46:40 +0000 (11:46 -0800)]
[SCSI] fcoe: NPIV vport create/destroy

Add NPIV vport create and destroy handlers and register them with the
FC transport.

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>
15 years ago[SCSI] fcoe: add a separate scsi transport template for NPIV vports
Chris Leech [Tue, 3 Nov 2009 19:46:34 +0000 (11:46 -0800)]
[SCSI] fcoe: add a separate scsi transport template for NPIV vports

Right now it's exactly the same as the physical port template,
and there is no way to create a port on anything other than the
netdev.  When the vport_create entry point gets hooked up it will
create lports on top of vport devices, which will use this.

Rename scsi_transport_fcoe_sw to fcoe_transport_template to be more
clear with naming now that there are two templates.

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>
15 years ago[SCSI] libfcoe, fcoe: libfcoe NPIV support
Chris Leech [Tue, 3 Nov 2009 19:46:29 +0000 (11:46 -0800)]
[SCSI] libfcoe, fcoe: libfcoe NPIV support

The FIP code in libfcoe needed several changes to support NPIV

1) dst_src_addr needs to be managed per-n_port-ID for FPMA fabrics with NPIV
   enabled.  Managing the MAC address is now handled in fcoe, with some slight
   changes to update_mac() and a new get_src_addr() function pointer.

2) The libfc elsct_send() hook is used to setup FCoE specific response
   handlers for FIP encapsulated ELS exchanges.  This lets the FCoE specific
   handling know which VN_Port the exchange is for, and doesn't require
   tracking OX_IDs.  It might be possible to roll back to the full FIP frame
   in these, but for now I've just stashed the contents of the MAC address
   descriptor in the skb context block for later use.  Also, because
   fcoe_elsct_send() just passes control on to fc_elsct_send(), all transmits
   still come through the normal frame_send() path.

3) The NPIV changes added a mutex hold in the keep alive sending, the lport
   mutex is protecting the vport list.  We can't take a mutex from a timer,
   so move the FIP keep alive logic to the link work struct.

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>
15 years ago[SCSI] libfc, libfcoe: FDISC ELS for NPIV
Chris Leech [Tue, 3 Nov 2009 19:46:24 +0000 (11:46 -0800)]
[SCSI] libfc, libfcoe: FDISC ELS for NPIV

Add FDISC ELS handling to libfc and libfcoe, treat it the same as FLOGI where
appropriate.

Add checking for NPIV support in the FLOGI LS_ACC service parameters.

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>
15 years ago[SCSI] libfc: vport link handling and fc_vport state managment
Chris Leech [Tue, 3 Nov 2009 19:46:19 +0000 (11:46 -0800)]
[SCSI] libfc: vport link handling and fc_vport state managment

NPIV vports are managed in libfc by changing their virtual link state
when the parent N_Ports internal state changes.  The vport link is only
online when the N_Port is in a ready state (logged into the fabric).

vport_state is updated as needed in this patch as well, currently the states
LINKDOWN, INITIALIZING, ACTIVE, DSIABLED, and NO_FABRIC_SUPP are used.

This also changes the fc_host port_state handling to differentiate between
LINKDOWN and OFFLINE.

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>
15 years ago[SCSI] libfc: add some generic NPIV support routines to libfc
Chris Leech [Tue, 3 Nov 2009 19:46:14 +0000 (11:46 -0800)]
[SCSI] libfc: add some generic NPIV support routines to libfc

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>
15 years ago[SCSI] libfc: changes to libfc_host_alloc to consolidate initialization with allocation
Chris Leech [Tue, 3 Nov 2009 19:46:08 +0000 (11:46 -0800)]
[SCSI] libfc: changes to libfc_host_alloc to consolidate initialization with 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>
15 years ago[SCSI] libfc: Move libfc_init and libfc_exit to fc_libfc.c
Robert Love [Tue, 3 Nov 2009 19:46:03 +0000 (11:46 -0800)]
[SCSI] libfc: Move libfc_init and libfc_exit to fc_libfc.c

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>
15 years ago[SCSI] libfc: Add libfc/fc_libfc.[ch] for libfc internal routines
Robert Love [Tue, 3 Nov 2009 19:45:58 +0000 (11:45 -0800)]
[SCSI] libfc: Add libfc/fc_libfc.[ch] for libfc internal routines

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>
15 years ago[SCSI] libfc: Remove fc_fcp_complete
Robert Love [Tue, 3 Nov 2009 19:45:52 +0000 (11:45 -0800)]
[SCSI] libfc: Remove fc_fcp_complete

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>
15 years ago[SCSI] libfc: Move non-common routines and prototypes out of libfc.h
Robert Love [Tue, 3 Nov 2009 19:45:47 +0000 (11:45 -0800)]
[SCSI] libfc: Move non-common routines and prototypes out of libfc.h

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>
15 years ago[SCSI] fcoe: Increase FCOE_MAX_LUN to 0xFFFF (65535)
Robert Love [Tue, 3 Nov 2009 19:45:42 +0000 (11:45 -0800)]
[SCSI] fcoe: Increase FCOE_MAX_LUN to 0xFFFF (65535)

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>
15 years ago[SCSI] fnic: Allocate OS interrupt resources just before enabling interrupts
Abhijeet Joglekar [Tue, 3 Nov 2009 19:45:37 +0000 (11:45 -0800)]
[SCSI] fnic: Allocate OS interrupt resources just before enabling interrupts

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>
15 years ago[SCSI] scsi_transport_fc: Introduce helper function for blocking scsi_eh
Christof Schmitt [Fri, 30 Oct 2009 16:59:29 +0000 (17:59 +0100)]
[SCSI] scsi_transport_fc: Introduce helper function for blocking scsi_eh

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>
15 years ago[SCSI] scsi_lib: fix potential NULL dereference
Jiri Slaby [Wed, 23 Sep 2009 14:15:35 +0000 (16:15 +0200)]
[SCSI] scsi_lib: fix potential NULL dereference

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>
15 years ago[SCSI] 3w-sas: Add new driver for LSI 3ware 9750
adam radford [Fri, 23 Oct 2009 21:52:33 +0000 (14:52 -0700)]
[SCSI] 3w-sas: Add new driver for LSI 3ware 9750

[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>
15 years ago[SCSI] scsi_debug: fix Thin provisioning support
Douglas Gilbert [Thu, 29 Oct 2009 05:48:31 +0000 (01:48 -0400)]
[SCSI] scsi_debug: fix Thin provisioning support

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>
15 years ago[SCSI] vmw_pvscsi: SCSI driver for VMware's virtual HBA.
Alok Kataria [Tue, 13 Oct 2009 21:51:05 +0000 (14:51 -0700)]
[SCSI] vmw_pvscsi: SCSI driver for VMware's virtual HBA.

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>
15 years ago[SCSI] scsi_dh: Make alua hardware handler's activate() async
Chandra Seetharaman [Wed, 21 Oct 2009 16:23:04 +0000 (09:23 -0700)]
[SCSI] scsi_dh: Make alua hardware handler's activate() async

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>
15 years ago[SCSI] scsi_dh: Make hp hardware handler's activate() async
Chandra Seetharaman [Wed, 21 Oct 2009 16:22:58 +0000 (09:22 -0700)]
[SCSI] scsi_dh: Make hp hardware handler's activate() async

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>
15 years ago[SCSI] scsi_dh: Make rdac hardware handler's activate() async
Chandra Seetharaman [Wed, 21 Oct 2009 16:22:51 +0000 (09:22 -0700)]
[SCSI] scsi_dh: Make rdac hardware handler's activate() async

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>
15 years ago[SCSI] scsi_dh: Change the scsidh_activate interface to be asynchronous
Chandra Seetharaman [Wed, 21 Oct 2009 16:22:46 +0000 (09:22 -0700)]
[SCSI] scsi_dh: Change the scsidh_activate interface to be asynchronous

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>
15 years ago[SCSI] zfcp: Adapt change_queue_depth for queue full tracking
Christof Schmitt [Fri, 16 Oct 2009 00:47:11 +0000 (17:47 -0700)]
[SCSI] zfcp: Adapt change_queue_depth for queue full tracking

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>
15 years ago[SCSI] libfc: add queue_depth ramp up
Vasu Dev [Fri, 16 Oct 2009 00:47:06 +0000 (17:47 -0700)]
[SCSI] libfc: add queue_depth ramp up

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>
15 years ago[SCSI] add queue_depth ramp up code
Vasu Dev [Thu, 22 Oct 2009 22:46:33 +0000 (15:46 -0700)]
[SCSI] add queue_depth ramp up code

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>
15 years ago[SCSI] fcoe, libfc: fix an libfc issue with queue ramp down in libfc
Vasu Dev [Fri, 16 Oct 2009 00:46:55 +0000 (17:46 -0700)]
[SCSI] fcoe, libfc: fix an libfc issue with queue ramp down in libfc

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>
15 years ago[SCSI] libfc: convert to scsi_track_queue_full
Mike Christie [Fri, 16 Oct 2009 00:46:50 +0000 (17:46 -0700)]
[SCSI] libfc: convert to scsi_track_queue_full

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>
15 years ago[SCSI] scsi error: have scsi-ml call change_queue_depth to handle QUEUE_FULL
Mike Christie [Fri, 16 Oct 2009 00:46:44 +0000 (17:46 -0700)]
[SCSI] scsi error: have scsi-ml call change_queue_depth to handle QUEUE_FULL

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>
15 years ago[SCSI] modify change_queue_depth to take in reason why it is being called
Mike Christie [Fri, 16 Oct 2009 00:46:39 +0000 (17:46 -0700)]
[SCSI] modify change_queue_depth to take in reason why it is being called

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>
15 years ago[SCSI] pm8001: add SAS/SATA HBA driver
jack wang [Wed, 14 Oct 2009 08:19:21 +0000 (16:19 +0800)]
[SCSI] pm8001: add SAS/SATA HBA driver

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>
15 years ago[SCSI] be2iscsi: Adding Ring Mode Wrb's V3
Jayamohan Kallickal [Fri, 23 Oct 2009 06:23:49 +0000 (11:53 +0530)]
[SCSI] be2iscsi: Adding Ring Mode Wrb's V3

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>
15 years ago[SCSI] be2iscsi: Adding msix and mcc_rings V3
Jayamohan Kallickal [Fri, 23 Oct 2009 06:22:33 +0000 (11:52 +0530)]
[SCSI] be2iscsi: Adding msix and mcc_rings V3

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>
15 years ago[SCSI] libfc: fix free of fc_rport_priv with timer pending
Joe Eykholt [Wed, 21 Oct 2009 23:28:30 +0000 (16:28 -0700)]
[SCSI] libfc: fix free of fc_rport_priv with timer pending

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>
15 years ago[SCSI] fnic: Pad the unused bytes of CDB to 0s
Abhijeet Joglekar [Wed, 21 Oct 2009 23:28:25 +0000 (16:28 -0700)]
[SCSI] fnic: Pad the unused bytes of CDB to 0s

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>
15 years ago[SCSI] fnic: Set max_cmd_len to driver supported CDB length
Abhijeet Joglekar [Wed, 21 Oct 2009 23:28:19 +0000 (16:28 -0700)]
[SCSI] fnic: Set max_cmd_len to driver supported CDB length

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>
15 years ago[SCSI] fnic: Process all cq entries per ISR
Abhijeet Joglekar [Wed, 21 Oct 2009 23:28:14 +0000 (16:28 -0700)]
[SCSI] fnic: Process all cq entries per ISR

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>
15 years ago[SCSI] libfc: fix memory corruption caused by double frees and bad error handling
Chris Leech [Wed, 21 Oct 2009 23:28:09 +0000 (16:28 -0700)]
[SCSI] libfc: fix memory corruption caused by double frees and bad error 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>
15 years ago[SCSI] fcoe: Call ndo_fcoe_enable/disable to turn FCoE feature on/off in LLD
Yi Zou [Wed, 21 Oct 2009 23:28:03 +0000 (16:28 -0700)]
[SCSI] fcoe: Call ndo_fcoe_enable/disable to turn FCoE feature on/off in LLD

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>
15 years ago[SCSI] libfc: Fix frags in frame exceeding SKB_MAX_FRAGS in fc_fcp_send_data
Yi Zou [Wed, 21 Oct 2009 23:27:58 +0000 (16:27 -0700)]
[SCSI] libfc: Fix frags in frame exceeding SKB_MAX_FRAGS in fc_fcp_send_data

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>
15 years ago[SCSI] fcoe: Use NETIF_F_FCOE_MTU flag to set up max frame size (lport->mfs)
Yi Zou [Wed, 21 Oct 2009 23:27:52 +0000 (16:27 -0700)]
[SCSI] fcoe: Use NETIF_F_FCOE_MTU flag to set up max frame size (lport->mfs)

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>
15 years ago[SCSI] fcoe: initialize return value in fcoe_destroy
Mike Christie [Wed, 21 Oct 2009 23:27:44 +0000 (16:27 -0700)]
[SCSI] fcoe: initialize return value in fcoe_destroy

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>
15 years ago[SCSI] libfc: removes unused disc_work and ex_list
Vasu Dev [Wed, 21 Oct 2009 23:27:39 +0000 (16:27 -0700)]
[SCSI] libfc: removes unused disc_work and ex_list

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>
15 years ago[SCSI] libfc: adds missing exch release for accepted RRQ
Vasu Dev [Wed, 21 Oct 2009 23:27:33 +0000 (16:27 -0700)]
[SCSI] libfc: adds missing exch release for accepted RRQ

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>
15 years ago[SCSI] libfc: removes initializing fc_cpu_order and fc_cpu_mask per lport
Vasu Dev [Wed, 21 Oct 2009 23:27:28 +0000 (16:27 -0700)]
[SCSI] libfc: removes initializing fc_cpu_order and fc_cpu_mask per lport

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>
15 years ago[SCSI] libfc: don't WARN_ON in lport_timeout for RESET state
Joe Eykholt [Wed, 21 Oct 2009 23:27:22 +0000 (16:27 -0700)]
[SCSI] libfc: don't WARN_ON in lport_timeout for RESET state

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>
15 years ago[SCSI] libfc: lport: fix minor documentation errors
Joe Eykholt [Wed, 21 Oct 2009 23:27:17 +0000 (16:27 -0700)]
[SCSI] libfc: lport: fix minor documentation errors

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>
15 years ago[SCSI] libfc: Fix wrong scsi return status under FC_DATA_UNDRUN
Yi Zou [Wed, 21 Oct 2009 23:27:12 +0000 (16:27 -0700)]
[SCSI] libfc: Fix wrong scsi return status under FC_DATA_UNDRUN

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>
15 years ago[SCSI] libfc: Remove unused fc_lport pointer from fc_fcp_pkt_abort
Robert Love [Wed, 21 Oct 2009 23:27:06 +0000 (16:27 -0700)]
[SCSI] libfc: Remove unused fc_lport pointer from fc_fcp_pkt_abort

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>
15 years ago[SCSI] libfc, fcoe: Don't EXPORT_SYMBOLS unnecessarily
Robert Love [Wed, 21 Oct 2009 23:27:01 +0000 (16:27 -0700)]
[SCSI] libfc, fcoe: Don't EXPORT_SYMBOLS unnecessarily

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>
15 years ago[SCSI] fcoe: remove redundant checking of netdev->netdev_ops
Yi Zou [Wed, 21 Oct 2009 23:26:55 +0000 (16:26 -0700)]
[SCSI] fcoe: remove redundant checking of netdev->netdev_ops

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>
15 years ago[SCSI] libfc: fix ddp in fc_fcp for 0 xid
Yi Zou [Wed, 21 Oct 2009 23:26:50 +0000 (16:26 -0700)]
[SCSI] libfc: fix ddp in fc_fcp for 0 xid

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>
15 years ago[SCSI] libfc: fix typo in retry check on received PRLI
Joe Eykholt [Wed, 21 Oct 2009 23:26:45 +0000 (16:26 -0700)]
[SCSI] libfc: fix typo in retry check on received PRLI

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>
15 years ago[SCSI] ibmvfc: Driver version 1.0.7
Brian King [Mon, 19 Oct 2009 20:07:55 +0000 (15:07 -0500)]
[SCSI] ibmvfc: Driver version 1.0.7

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>
15 years ago[SCSI] ibmvfc: Add FC Passthru support
Brian King [Mon, 19 Oct 2009 20:07:54 +0000 (15:07 -0500)]
[SCSI] ibmvfc: Add FC Passthru support

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>
15 years ago[SCSI] ibmvfc: Fix adapter cancel flags for terminate_rport_io
Brian King [Mon, 19 Oct 2009 20:07:53 +0000 (15:07 -0500)]
[SCSI] ibmvfc: Fix adapter cancel flags for terminate_rport_io

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>
15 years ago[SCSI] ibmvfc: Remove unnecessary parameter to ibmvfc_init_host
Brian King [Mon, 19 Oct 2009 20:07:49 +0000 (15:07 -0500)]
[SCSI] ibmvfc: Remove unnecessary parameter to ibmvfc_init_host

Remove a parameter to ibmvfc_init_host which is always set to
zero by all callers.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] ibmvfc: Fix locking in ibmvfc_remove
Brian King [Mon, 19 Oct 2009 20:07:48 +0000 (15:07 -0500)]
[SCSI] ibmvfc: Fix locking in ibmvfc_remove

Need to grab the host lock around the call to ibmvfc_link_down.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] ibmvfc: Fixup TMF response handling
Brian King [Mon, 19 Oct 2009 20:07:47 +0000 (15:07 -0500)]
[SCSI] ibmvfc: Fixup TMF response handling

When processing the response to either a LUN reset,
target reset, or an abort task set, the ibmvfc driver needs to
treat as success receiving a response with a non-zero
status in the response IU along with a general transport
error with the FCP response code being zero. The VIOS
currently guarantees this cannot happen, but a future version
of VIOS may allow this to be returned, so ensure we handle
this response combination correctly for TMFs, as we already
do for SCSI commands.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] scsi_debug: Thin provisioning support
Martin K. Petersen [Thu, 15 Oct 2009 18:45:27 +0000 (14:45 -0400)]
[SCSI] scsi_debug: Thin provisioning support

This version fixes 64-bit modulo on 32-bit as well as inadvertent map
updates when TP was disabled.

Implement support for thin provisioning in scsi_debug.  No actual memory
de-allocation is taking place.  The intent is to emulate a thinly
provisioned storage device, not to be one.

There are four new module options:

 - unmap_granularity specifies the granularity at which to track mapped
   blocks (specified in number of logical blocks).  2048 (1 MB) is a
   realistic value for disk arrays although some may have a finer
   granularity.

 - unmap_alignment specifies the first LBA which is naturally aligned on
   an unmap_granularity boundary.

 - unmap_max_desc specifies the maximum number of ranges that can be
   unmapped using one UNMAP command.  If this is 0, only WRITE SAME is
   supported and UNMAP will cause a check condition.

 - unmap_max_blocks specifies the maximum number of blocks that can be
   unmapped using a single UNMAP command.  Default is 0xffffffff.

These parameters are reported in the new and extended block limits VPD.

If unmap_granularity is specified the device is tagged as thin
provisioning capable in READ CAPACITY(16).  A bitmap is allocated to
track whether blocks are mapped or not.  A WRITE request will cause a
block to be mapped.  So will WRITE SAME unless the UNMAP bit is set.

Blocks can be unmapped using either WRITE SAME or UNMAP.  No accounting
is done to track partial blocks.  This means that only whole blocks will
be marked free.  This is how the array people tell me their firmwares
work.

GET LBA STATUS is also supported.  This command reports whether a block
is mapped or not, and how long the adjoining mapped/unmapped extent is.

The block allocation bitmap can also be viewed from user space via:

/sys/bus/pseudo/drivers/scsi_debug/map

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] scsi: Add missing command definitions
Martin K. Petersen [Thu, 15 Oct 2009 18:43:23 +0000 (14:43 -0400)]
[SCSI] scsi: Add missing command definitions

Add definitions for UNMAP, WRITE SAME{16,32} and GET LBA STATUS
commands.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] qla2xxx: Update version number to 8.03.01-k7
Giridhar Malavali [Tue, 13 Oct 2009 22:16:53 +0000 (15:16 -0700)]
[SCSI] qla2xxx: Update version number to 8.03.01-k7

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] qla2xxx: Properly handle UNDERRUN completion statuses.
Lalit Chandivade [Tue, 13 Oct 2009 22:16:52 +0000 (15:16 -0700)]
[SCSI] qla2xxx: Properly handle UNDERRUN completion statuses.

Correct issues where the lower scsi-status would be improperly
cleared, instead, allow the midlayer to process the status after
the proper residual-count checks are performed.  Finally,
validate firmware status flags prior to assigning values from the
FCP_RSP frame.

Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Michael Hernandez <michael.hernandez@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] qla2xxx: Properly re-register FC4/FDMI after physical and logical link disrupt...
Andrew Vasquez [Tue, 13 Oct 2009 22:16:51 +0000 (15:16 -0700)]
[SCSI] qla2xxx: Properly re-register FC4/FDMI after physical and logical link disruptions.

Original code would not register FC4 nor FDMI information after a
logical tear-down of an VFC link.  Code now triggers registration
date during processing of a 'Report ID Acquisition IOCB', which
is submitted after a FLOGI or FDISC completes.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] qla2xxx: Properly check FCP_RSP response-info field after TMF completion.
Andrew Vasquez [Tue, 13 Oct 2009 22:16:50 +0000 (15:16 -0700)]
[SCSI] qla2xxx: Properly check FCP_RSP response-info field after TMF completion.

Original code discarded response-info field information and
assumed the command completed successfully without verifying the
target's status within the FCP_RSP packet.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] qla2xxx: Retrieve firmware's maximum number of supported FCFs.
Andrew Vasquez [Tue, 13 Oct 2009 22:16:49 +0000 (15:16 -0700)]
[SCSI] qla2xxx: Retrieve firmware's maximum number of supported FCFs.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] qla2xxx: Set the size of the host buffer used to fetch DCBX and XGMAC paramete...
Giridhar Malavali [Tue, 13 Oct 2009 22:16:48 +0000 (15:16 -0700)]
[SCSI] qla2xxx: Set the size of the host buffer used to fetch DCBX and XGMAC parameters to 4K.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] qla2xxx: Reread firmware versions information after an ISP abort.
Lalit Chandivade [Tue, 13 Oct 2009 22:16:47 +0000 (15:16 -0700)]
[SCSI] qla2xxx: Reread firmware versions information after an ISP abort.

In some case, the MPI and PHY versions when retrieved after the
Execute-FW mailbox-command are incorrect (255.255.255.255).
Instead, query the information after the check for firmware ready
is done in the abort ISP path.

Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] qla2xxx: Display additional mailbox registers during AEN handling.
Andrew Vasquez [Tue, 13 Oct 2009 22:16:46 +0000 (15:16 -0700)]
[SCSI] qla2xxx: Display additional mailbox registers during AEN handling.

The mailbox register values may assist in debugging efforts.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] qla2xxx: Add firmware-dump kobject uevent notification.
Andrew Vasquez [Tue, 13 Oct 2009 22:16:45 +0000 (15:16 -0700)]
[SCSI] qla2xxx: Add firmware-dump kobject uevent notification.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] bfa: fixed checkpatch errors for bfad files
Jing Huang [Fri, 25 Sep 2009 19:29:54 +0000 (12:29 -0700)]
[SCSI] bfa: fixed checkpatch errors for bfad files

This patch fixes checkpatch errors/warnings in bfad files.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] scsi_transport_fc: remove invalid BUG_ON
Michael Reed [Fri, 9 Oct 2009 19:15:59 +0000 (14:15 -0500)]
[SCSI] scsi_transport_fc: remove invalid BUG_ON

I was doing some large lun count testing with 2.6.31 and hit
a BUG_ON() in fc_timeout_deleted_rport(), and it seems like it
should have been just a matter of time before someone did.

It seems invalid to set port_state under lock, then expect it to
remain set after releasing the lock.  Another thread called
fc_remote_port_add() when the lock was released, changing the
port_state.

This patch removes the BUG_ON and moves the test of the
port_state to inside the host_lock.  It's been running for
several weeks now with no ill effect.

Signed-off-by: Michael Reed <mdr@sgi.com>
Acked-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fix propogation of integrity errors
Mike Christie [Mon, 28 Sep 2009 20:50:52 +0000 (15:50 -0500)]
[SCSI] fix propogation of integrity errors

When the Integrity check is done in scsi_io_completion it will
set error to -EILSEQ. However, at this point error is no longer
used, and blk_end_request_err has -EIO hardcoded.

It looks like there was just porting mistake with this patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=3e695f89c5debb735e4ff051e9e58d8fb4e95110
and we meant to send error upwards, so this patch changes the hard
coded EIO to the error variable.

I have only boot tested this patch.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] stex: update version to 4.6.0000.4
Ed Lin [Tue, 29 Sep 2009 06:58:36 +0000 (22:58 -0800)]
[SCSI] stex: update version to 4.6.0000.4

Update version to 4.6.0000.4.

Signed-off-by: Ed Lin <ed.lin@promise.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] stex: add support for reset request from firmware
Ed Lin [Tue, 29 Sep 2009 06:58:33 +0000 (22:58 -0800)]
[SCSI] stex: add support for reset request from firmware

Add support for reset request from firmware for controllers
of st_shasta and st_yel type. Code adjustments necessary
for this change are also included.

Signed-off-by: Ed Lin <ed.lin@promise.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] stex: add small dma buffer support
Ed Lin [Tue, 29 Sep 2009 06:58:17 +0000 (22:58 -0800)]
[SCSI] stex: add small dma buffer support

The controllers of st_seq and st_vsc type can work
if only small dma buffer is available, with a reduced
firmware feature set. Add support for this case.

Signed-off-by: Ed Lin <ed.lin@promise.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] mptfusion: Bump version to 3.04.13
Kashyap, Desai [Wed, 7 Oct 2009 05:58:50 +0000 (11:28 +0530)]
[SCSI] mptfusion: Bump version to 3.04.13

Bump version 3.04.13.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] mptspi: Fix for incorrect data underrun errata
Kashyap, Desai [Wed, 7 Oct 2009 05:57:40 +0000 (11:27 +0530)]
[SCSI] mptspi: Fix for incorrect data underrun errata

Errata:
Certain conditions on the scsi bus may casue the 53C1030 to incorrectly signal
a SCSI_DATA_UNDERRUN to the host.

Workaround 1:
For an Errata on LSI53C1030 When the length of request data
and transfer data are different with result of command (READ or VERIFY),
DID_SOFT_ERROR is set.

Workaround 2:
For potential trouble on LSI53C1030. It is checked whether the length of
request data is equal to the length of transfer and residual.
MEDIUM_ERROR is set by incorrect data.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] mptctl : Remove printk which floods unnecessary messages to var/log/message
Kashyap, Desai [Wed, 7 Oct 2009 05:56:54 +0000 (11:26 +0530)]
[SCSI] mptctl : Remove printk which floods unnecessary messages to var/log/message

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] megaraid_sas: Update version number and documentation
Yang, Bo [Tue, 6 Oct 2009 20:55:09 +0000 (14:55 -0600)]
[SCSI] megaraid_sas: Update version number and documentation

Signed-off-by Bo Yang<bo.yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] megaraid_sas: use the firmware boot timeout when waiting for commands
Yang, Bo [Tue, 6 Oct 2009 20:52:20 +0000 (14:52 -0600)]
[SCSI] megaraid_sas: use the firmware boot timeout when waiting for commands

use the constant MEGASAS_RESET_WAIT_TIME when waiting for firmware
commands to complete (currently 3 minutes).

Signed-off-by Bo Yang<bo.yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] megaraid_sas: fix 64 bit sense pointer truncation
Yang, Bo [Tue, 6 Oct 2009 20:52:20 +0000 (14:52 -0600)]
[SCSI] megaraid_sas: fix 64 bit sense pointer truncation

The current sense pointer is cast to a u32 pointer, which can truncate
on 64 bits.  Fix by using unsigned long instead.

Signed-off-by Bo Yang<bo.yang@lsi.com>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] megaraid_sas: Add the support for updating the OS after adding/removing the...
Yang, Bo [Tue, 6 Oct 2009 20:50:17 +0000 (14:50 -0600)]
[SCSI] megaraid_sas: Add the support for updating the OS after adding/removing the devices from FW

Driver will update the OS devices after adding and deleting the device
from FW.  When driver receive add or delete AEN from FW, driver will
send the DCMD cmd to get the System PD list from FW.  Then driver will
check if this device already in the OS: If add event and OS don't have
the device (but it is in the list), driver add the device to OS,
otherwise driver will not add.  If remove event, driver will check the
list, if is not in the list, but OS have the device, driver will
remove the device.

Signed-off-by Bo Yang<bo.yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>