Commit Graph

105844 Commits

Author SHA1 Message Date
Mike Christie
289324b0c6 [SCSI] iscsi class: add callout to get iscsi_endpoint values
For drivers using the ep callbacks the addr and port
are attached to the endpoint instead of the conn.
This adds a callout to the iscsi_transport to get
ep values. It also adds locking around the get
param call to make sure that ep_disconnect does
not free the LLD's ep interconnect structs from
under us (the ep has a refcount so it will not
go away but the LLD may have structs from other
subsystems that are not allocated in the ep so
we need to protect them from getting freed).

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:41:12 -05:00
Mike Christie
a79af8a64d [SCSI] iscsi_tcp: use iscsi_conn_get_addr_param libiscsi function
This has iscsi_tcp use the iscsi_conn_get_addr_param
libiscsi function. It also drops the use of the libiscsi
session portal buffers, so they can be removed in
the next patches. Instead of copying the values
at bind time we get them during get() time. If we are
not connected userspace will now get -ENOTCONN,
so it knows that connection is disconnected instead
of a possible stale value.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:41:10 -05:00
Mike Christie
00f3708e6e [SCSI] libiscsi: add helper to convert addr to string
This adds a helper to convert a addr struct to
a string. This will be used by the drivers in
the next patches.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:41:08 -05:00
Mike Christie
bbc5261b2c [SCSI] iscsi class: remove unused active variable
The active variable on the iscsi_cls_conn is not used
so this patch removes it.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:41:07 -05:00
Mike Christie
22a39fbbfe [SCSI] iscsi: fix iscsi_endpoint leak
When iscsid restarts it does not know the connection's
endpoint, so it is getting leaked. This fixes the problem
by having the iscsi class force a disconnect before a
new connection is bound.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:41:05 -05:00
Mike Christie
fdafd4dfc7 [SCSI] cxgbi: enable TEXT PDU support
cxgb3i and cxgb4i support TEXT PDU offloading, so set
the bits to enable it.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:40:36 -05:00
Eddie Wai
fc336387db [SCSI] bnx2i: Updated to version 2.6.2.3
Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:40:26 -05:00
Eddie Wai
09813ba5bc [SCSI] bnx2i: Added iSCSI text pdu support for iSCSI offload
This is part of an effort to support send target discovery via
the iSCSI offload path.

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:40:05 -05:00
Eddie Wai
45188354eb [SCSI] bnx2i: Added jumbo MTU support for the no shost case
For scenarios where the shost is not being passed to bnx2i for the
iSCSI offload connection request, the code would consult the routing
table to select the CNIC device.
This code path will erroneously error out if the corresponding L2
interface's MTU has been setup to > 1500.

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:39:30 -05:00
Eddie Wai
8a4a0f3ad0 [SCSI] bnx2i: Added support for the 57712(E) devices
Moved all PCI_DEVICE_ID_NX2_57712(E) definitions to pci_ids.h

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Acked-by: Michael Chan <mchan@broadcom.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:39:08 -05:00
Eddie Wai
a977d2c9dc [SCSI] bnx2i: Added handling for unsupported iSCSI offload hba
The hba will now be unregistered and freed when iSCSI offload
is not supported by the NIC.

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:38:52 -05:00
Eddie Wai
ee15bd2da6 [SCSI] bnx2i: Fixed the 32-bit swapping of the LUN field for nopouts for 5771X
Fixed a bug where the 64-bit LUN field for nopouts were 32-bit swapped.
This only pertains to 5771X devices.

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:38:29 -05:00
Eddie Wai
ec8933b4bc [SCSI] bnx2i: Allow ep CONNECT_FAILED condition to go through proper cleanup
Allow CNIC to go through the proper cleanup procedure for an endpoint
which failed to connect.  Proper cleanup is necessary for the chip
to reset back to the initial state for the offloaded endpoint.

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-24 12:38:02 -05:00
James Smart
6fc124697a [SCSI] lpfc 8.3.21: Change lpfc driver version to 8.3.21
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>
2011-02-18 15:36:34 -06:00
James Smart
2a622bfbe1 [SCSI] lpfc 8.3.21: Debugfs additions
- Add the driver debugfs framework for supporting debugfs read and write
  operations, and iDiag command structure.
- Add read and write to SLI4 device PCI config space registers.
- Add the driver support of debugfs PCI config space register bits set/clear
  methods to the provided bitmask.
- Add iDiag driver support for SLI4 device queue diagnostic.

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>
2011-02-18 15:36:33 -06:00
James Smart
ab56dc2e1d [SCSI] lpfc 8.3.21: Initialization and user interface changes
- Make link speed not supported by port message an error message.
- Add support for new SLI failure codes add sysfs parameter to reflect the
  security setting and current state.
- Add all lpfc module parameters to the /sys/modules/lpfc/parameters directory.

[jejb: fix up compile failure]
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>
2011-02-18 15:35:52 -06:00
James Smart
924941444b [SCSI] lpfc 8.3.21: FC Discovery changes
FC Discovery changes

- Treat received PLOGI while logged in as a relogin (unregister and reregister).
- Added a timer to delay Nport discovery when clean bit is cleared and Fabric
  portname/nodename/FCID is changed.
- Invalidate Port's DID when receiving PLOGI from p2p port with CONFIG_PORT
  mailbox command.

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>
2011-02-18 12:47:20 -06:00
James Smart
1151e3ec15 [SCSI] lpfc 8.3.21: RRQ Implementation fixes
RRQ Implementation fixes

- Added checks to prevent a call to findnode_did in clr_active_rrq
- Added the del_sync_timer call for the rrq_tmr to the stop_hba_timers routine.
- Added a check in __lpfc_set_active_rrq for the driver unloading to prevent
  adding an rrq when the driver is being removed.
- Add code to scsi_iocb_cmpl to check for the remote stop and add the rrq.
- Added the same check to els retry.
- Added code to compare the source did in the els rrq to the vports did and
  chose the right exchange ID.
- Initialize the start_cmd pointer to indicate when we have looped through
  all of the scsi buffers.
- Remove the need for the lock around the clearing of the active bit in the
  rrq.
- Added code to clean the els and fcp xri aborted list and remove the all of
  the RRQs for a deleted vport.

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>
2011-02-18 12:45:21 -06:00
James Smart
fedd3b7b93 [SCSI] lpfc 8.3.21: Critical Errors and Bug Fixes
Critical Errors:
- Correctly handle non-zero return lpfc_workq_post_event and return ENOMEM
- Save the irq level when locking the host_lock in lpfc_findnode_did

Bug Fixes:
- Adjust payload_length and request_length for sli4_config mailbox commands.
- Add the freed sgl/XRI to the tail of the list rather than to the head.
- Set the FC_VPORT_NEEDS_INIT_VPI on vport deletes and check it before
  issuing a fdisc on an els retry.
- Only call lpfc_hba_init_link() if phba->cfg_suppress_link_up
  is LPFC_INITIALIZE_LINK.
- Add support for SLI-4 Performance Hints

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>
2011-02-18 12:39:18 -06:00
Dan Carpenter
382be668c5 [SCSI] hpsa: fix bad comparison
'!' has higher precedence than '&'.  CFGTBL_ChangeReq is 0x1 so the
original code is equivelent to if (!doorbell_value) {...

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-18 12:34:38 -06:00
Stephen M. Cameron
ba95e2ac6b [SCSI] hpsa: Do not attempt kdump if we detect resetting controller failed.
We can get completions left over from before the attempted reset which
will interfere with the kdump.  Better to just not make the attempt in
that case.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-18 12:34:14 -06:00
Stephen M. Cameron
960a30e7a7 [SCSI] hpsa: Inform controller we are using 32-bit tags.
Controller will transfer only 32-bits on completion if it
knows we are only using 32-bit tags.  Also, some newer controllers
apparently (and erroneously) require that we only use 32-bit tags,
and that we inform the controller of this.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-18 12:33:52 -06:00
Stephen M. Cameron
745a7a25bc [SCSI] hpsa: Add transport_mode host attribute in /sys
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-18 12:33:06 -06:00
Stephen M. Cameron
a9a3a2739a [SCSI] hpsa: make hpsa.hpsa_simple_mode=1 module parameter actually work
It's not enough to simple avoid putting the board into performant
mode, as we have to set up the interrupts differently, etc.  When
I originally tested this module parameter, I tested it incorrectly
without realizing it, and the driver was running in performant mode
the whole time unbeknownst to me.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-18 12:32:30 -06:00
Stephen M. Cameron
9e0fc764ea [SCSI] hpsa: do not re-order commands in internal queues
Driver's internal queues should be FIFO, not LIFO.
This is a port of an almost identical patch from cciss by Jens Axboe.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-18 12:31:19 -06:00
Kleber Sacilotto de Souza
5767a1c498 [SCSI] ipr: Fix a race on multiple configuration changes
In a multiple configuration change scenario a remove notification can be
followed by an immediate add notification for the same device, which
will cause the device to be removed but never added back. This patch
fixes the problem by ensuring that in such situations the device will be
added back.

Signed-off-by: Kleber Sacilotto de Souza <klebers@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-18 12:29:15 -06:00
James Bottomley
c299190b93 [SCSI] libsas: convert to libata new error handler
The conversion is quite complex given that the libata new error
handler has to be hooked into the current libsas timeout and error
handling.  The way this is done is to process all the failed commands
via libsas first, but if they have no underlying sas task (and they're
on a sata device) assume they are destined for the libata error
handler and send them accordingly.

Finally, activate the port recovery of the libata error handler for
each port known to the host.  This is somewhat suboptimal, since that
port may not need recovering, but given the current architecture of
the libata error handler, it's the only way; and the spurious
activation is harmless.

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-13 13:17:46 -06:00
James Bottomley
64878c0eff [SCSI] libata: separate error handler into usable components
Right at the moment, the libata error handler is incredibly
monolithic.  This makes it impossible to use from composite drivers
like libsas and ipr which have to handle error themselves in the first
instance.

The essence of the change is to split the monolithic error handler
into two components: one which handles a queue of ata commands for
processing and the other which handles the back end of readying a
port.  This allows the upper error handler fine grained control in
calling libsas functions (and making sure they only get called for ATA
commands whose lower errors have been fixed up).

Cc: Tejun Heo <tj@kernel.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-13 13:17:24 -06:00
James Bottomley
4451ef63e1 [SCSI] libata: fix eh locking
The SCSI host eh_cmd_q should be protected by the host lock (not the
port lock).  This probably doesn't matter that much at the moment,
since we try to serialise the add and eh pieces, but it might matter
in future for more convenient error handling.  Plus this switches
libata to the standard eh pattern where you lock, remove from the cmd
queue to a local list and unlock and then operate on the local list.

Cc: Tejun Heo <tj@kernel.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-13 13:16:41 -06:00
James Bottomley
b8784f7745 [SCSI] libata: fix locking for sas paths
For historical reasons, libsas uses the scsi host lock as the ata port
lock, and libata always uses the ata host.  For the old eh, this was
largely irrelevant since the two locks were never mixed inside the
code.  However, the new eh has a case where it nests acquisition of
the host lock inside the port lock (this does look rather deadlock
prone).  Obviously this would be an instant deadlock if the port lock
were the host lock, so switch the libsas paths to use the ata host
lock as well.

Cc: Tejun Heo <tj@kernel.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-13 13:16:24 -06:00
James Bottomley
1f723867e6 [SCSI] libata: plumb sas port scan into standard libata paths
The function ata_sas_port_init() has always really done its own thing.
However, as a precursor to moving to the libata new eh, it has to be
properly using the standard libata scan paths.  This means separating
the current libata scan paths into pieces which can be shared with
libsas and pieces which cant (really just the async call and the host
scan).

Cc: Tejun Heo <tj@kernel.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-13 13:14:29 -06:00
Moger, Babu
a0b990c62c [SCSI] scsi_dh_rdac : Adding MODULE VERSION for rdac device handler
Adding MODULE_VERSION for scsi_dh_rdac. This will be helpful sometimes
to get the code level without looking at the code.

Signed-off-by: Babu Moger <babu.moger@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 14:14:11 -06:00
Hillf Danton
9dfeb3157e [SCSI] scsi_dh: cosmetic change to sizeof()
instead of doing sizeof(struct X) it's better to do sizeof(*v) where v
is the variable pointing to struct X.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Babu Moger <babu.moger@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 14:13:34 -06:00
Moger, Babu
04b6e153b6 [SCSI] scsi_dh_rdac: fix for lun_table update for rdac device handler
During one of our testing, we noticed that mode select command sent
from the host did not have the lun_table updated.

Problem is root caused to the way lun table is updated. Lun table
update was done after the call to blk_rq_map_kern is made. This was
causing problem because kernel uses bounce buffer(bio_copy_kern) if
the address is not aligned.  The command buffer updated after the
call(blk_rq_map_kern) was not going on the wire. Moved the code to
update the lun_table before the call to fix the problem.

Signed-off-by: Babu Moger <babu.moger@lsi.com>
Signed-off-by: Somasundaram Krishnasamy <Somasundaram.Krishnasamy@lsi.com>
Signed-off-by: Yanling Qi <Yanling.Qi@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 14:05:08 -06:00
Kashyap, Desai
3487735aa5 [SCSI] mptfusion: Remove bus reset for mptsas module
Bus reset is not required for SAS Controller. It is valid for mptspi
and mptfc, but for mptsas it is not required. It is an extra work for
Error handling escallation for mptsas.  Removing bus reset from error
handling will eventually speedup Error handling for SAS controller.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 13:57:43 -06:00
Kashyap, Desai
d75733d51f [SCSI] mptfusion: Support SAS2.0 Devices with SAS1.0 Controllers
SAS1.0 Controller was not able to detect SAS2.0 Expanders due to Link
RATE detection was limited to 1.5 Gbps and 3.0 Gbps for SAS1
controllers. Added detection for 6.0 Gbps link.  Now, user can mix-up
6.0 Gpbs links with SAS1.0 controller.

e.g SAS1.0 HBA <----> SAS2.0 Expander <------> SAS2.0 Expander <--------> SAS1.0 Drive.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 13:57:28 -06:00
Bhanu Prakash Gollapudi
8597ae8bfe [SCSI] libfcoe: Move common code from fcoe to libfcoe module
To facilitate LLDDs to reuse the code, skb queue related functions are moved to
libfcoe, so that both fcoe and bnx2fc drivers can use them. The common structures
fcoe_port, fcoe_percpu_s are moved to libfcoe. fcoe_port will now have an
opaque pointer that points to corresponding driver's interface structure.
Also, fcoe_start_io and fcoe_fc_crc are moved to libfcoe.

As part of this change, fixed fcoe_start_io to return ENOMEM if
skb_clone fails.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 11:18:18 -06:00
Tejun Heo
2ca32b4848 [SCSI] fcoe: use dedicated workqueue instead of system_wq
fcoe uses the system_wq to destroy ports and the work items need to be
flushed before the driver is unloaded.  As the work items free the
containing data structure, they can't be flushed directly.  The
workqueue should be flushed instead.

Also, the destruction works can be chained - ie. destruction of a port
may lead to destruction of another port where the work item for the
former queues the work for the latter.  Currently, the depth of chain
can be at most two and fcoe_exit() makes sure everything is complete
by calling flush_scheduled_work() twice.

With commit c8efcc25 (workqueue: allow chained queueing during
destruction), destroy_workqueue() can take care of chained works on
workqueue destruction.  Add and use fcoe_wq instead.  Simply
destroying fcoe_wq on driver unload takes care of flushing.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 11:17:50 -06:00
Bhanu Prakash Gollapudi
75a2792df2 [SCSI] libfc: introduce LLD event callback
This patch enables LLD to listen to rport events and perform LLD
specific operations based on the rport event. This patch also stores
sp_features and spp_type in rdata for further reference by LLD.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 11:09:04 -06:00
Kiran Patil
acc1a92165 [SCSI] libfc: Extending lport's roles for target if there is a registered target.
Problem:

From initaitor machine, when queried role of target (other end of connection),
it is "initiator", hence SCSI-ml doesn't send any LUN Inquiry commands.

Fix:

If there is a registered target for FC_TYPE_FCP, extend lport's params
(capability) to be target as well, By default lport params are
INITIATOR only. Having this fix, caused initiator to send SCSI LUN
inquiry command to target.

Signed-off-by: Kiran Patil <kiran.patil@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 11:08:22 -06:00
Yi Zou
78a582463c [SCSI] fcoe: convert fcoe.ko to become an fcoe transport provider driver
Remove the existing sysfs entry points of the fcoe.ko module parameters that
are used to create/destroy/enable/disable an FCoE instance, rather, use the
newly added fcoe transport code to attach itself as an FCoE transport provider
when fcoe.ko gets loaded. There is no functionality change on the logic of
fcoe interacts with upper libfc and lower netdev. The fcoe transport only acts
as thin layer to provide a unified interface for all fcoe transport providers
so all FCoE instances on any network interfaces from all vendors can be
managed through the same Open-FCoE.org's user space tool package, which also
has full DCB support.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 11:07:33 -06:00
Yi Zou
8ca86f84dd [SCSI] fcoe: prepare fcoe for using fcoe transport
Prepare the fcoe to convert it to use the newly added fcoe transport, making
it as the default fcoe transport provider for libfcoe. This patch is to rename
some of the variables to avoid any confusing names later as now there are
several transports in the same file.

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>
2011-02-12 11:07:11 -06:00
Yi Zou
e01efc33bc [SCSI] libfcoe: include fcoe_transport.c into kernel libfcoe module
Now we can include the fcoe_transport.c to the build of the kernel libfcoe
module. Move the module information to fcoe_transport, and it will have
all the module parameters later for the create/destroy/enable/disable of an
FCoE instance.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 11:06:52 -06:00
Yi Zou
0095a92133 [SCSI] libfcoe: rename libfcoe.c to fcoe_cltr.c for the coming fcoe_transport.c
The existing libfcoe.c is mostly for FIP support, rename it to reflect that
fact and so we can add fcoe_transport.c to the make file to include both
into the libfcoe kernel module.

[ Minor modifications by Robert Love converting a few
  "__attribute__((packed))" modifiers to "__packed" to remove new
  checkpatch.pl WARNINGS ]

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>
2011-02-12 11:06:25 -06:00
Yi Zou
fdecf31b7c [SCSI] libfcoe: add implementation to support fcoe transport
Add the new fcoe_transport.c file that implements basic fcoe transport
interface. Eventually, the sysfs entries to create/destroy/enable/disable
an FCoE instance will be coming to the fcoe transport layer, who does a
look-up to find the corresponding transport provide and pass the corresponding
action over to the identified provider.

The fcoe.ko will become the default fcoe transport provider that can support
FCoE on any given netdev interfaces, as the Open-FCoE.org's default software
FCoE HBA solution. Any vendor specific FCoE HBA driver that is built on top
of Open-FCoE's kernel stack of libfc & libfcoe as well as the user land tool
of fcoe-utils can easily plug-in and start running FCoE on their network
interfaces. The fcoe.ko will be converted to act as the default provider if
no vendor specific transport provider is found, as it is always added to the
very end of the list of attached transports.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 11:06:06 -06:00
Yi Zou
21b7b2f557 [SCSI] libfcoe: move logging macros into the local libfcoe.h header file
libfcoe kernel module debug macros will used by the fcoe transport code
as well when later it gets added.

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>
2011-02-12 11:05:22 -06:00
Kiran Patil
6c8cc1c003 [SCSI] libfc: Enhanced exchange ID selection mechanism and fix related EMA selection logic.
Problem:

In case of exchange responder case, EMA selection was defaulted to the
last EMA from EMA list (lport.ema_list).  If exchange ID is selected
from offload pool and not setup DDP, resulting into incorrect
selection of EMA, and eventually dropping the packet because unable to
find exchange.

Fix:

Enhanced the exchange ID selection (depending upon request type and
exchange responder) Made necessary enhancement in EMA selection
algorithm.

Signed-off-by: Kiran Patil <kiran.patil@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 11:04:27 -06:00
Joe Eykholt
62bdb6455e [SCSI] libfc: export seq_release() for users of seq_assign()
Target modules using lport->tt.seq_assign() get a hold on the
exchange but have no way of releasing it.  Add that.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 11:03:40 -06:00
Robert Love
04885b16a1 [SCSI] libfc: Remove usage of the Scsi_Host's host_lock
This patch removes the use of the Scsi_Host's host_lock
within fc_queuecommand. It also removes the DEF_SCSI_QCMD
usage so that libfc has fully moved on to the new
queuecommand interface.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Reviewed-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-12 11:02:25 -06:00
Joe Eykholt
925cedae2b [SCSI] libfc: use PRLI hook to get parameters when sending outgoing PRLI
When sending an outgoing PRLI as an initiator, get the parameters
from registered providers so that they all get a chance to decide
on roles.

The passive provider is called last, and could override the
initiator role.

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>
2011-02-12 11:02:22 -06:00