v4: Minor fixes and cleanups
* Changed device_initialize/device_add to device_register
and device_del to device_unregister. There was an imbalance
because device_initialize was getting a reference that
was not being released. With this update both fcoe_fcfs
as well as fcoe_ctlrs are correctly released/free'd when
they are to be removed from the system.
* Minor updates to commit messages so there are no
references to 'fcoe_ctlr_attrs' and 'fcoe_fcf_attrs'
which were both renamed in v3 of this series.
v3: Addressed Greg KH's second set of review comments
* Created a 'fcoe bus' with the fcoe_ctlr and fcoe_fcf
instances as devices on the bus. Created bus_type(s)
for both device types, with default attribute group
sets for each. Now sysfs core adds/removes attributes
which allowed the removal of sysfs_create_group calls
before device_add. Updated Documentation/ accordingly.
* Renamed structures and APIs to make them less confusing.
structs:
fcoe_ctlr_attrs -> fcoe_ctlr_device
fcoe_fcf_attrs -> fcoe_fcf_device
functions:
fcoe_ctlr_attrs_add -> fcoe_ctlr_device_add
fcoe_ctlr_attrs_delete -> fcoe_ctlr_device_delete
fcoe_fcf_attrs_add -> fcoe_fcf_device_add
fcoe_fcf_attrs_delete -> fcoe_fcf_device_delete
* Removed extra get_device(parent) for both the
fcoe_ctlr_device and fcoe_fcf_device.
* fixed 'unused variable' compilation warning that
existed in v2.
* API symbols now exported with EXPORT_SYMBOL_GPL
* NOT ADDRESSED - idr usage vs. atomic incremeting of
fcoe_ctlr and fcoe_fcf id enumeration. It was indicated
that idr has not traditionally been used in drivers/scsi/.
I will re-examine this if there is still heartburn.
---
v2: Addressed Greg KH's review comments
* moved fcoe_ctlr_attrs and fcoe_fcf_attrs attribute
helper macros from fcoe_sysfs.h to fcoe_sysfs.c so
that they don't temp developers to use them. They're
intended to be used in attribute show/store routine
generating macros, but not by drivers.
* Removed unnecessary put_device calls on parent devices.
Also removed unnecessary de-initialization of pointers
to parent and removed unnecessary zero'ing of memory
before freeing it.
* Added Documentation/ABI/testing/sysfs-class-fcoe
document.
* Changed simple_strtoul usage to kstrtoul to avoid
checkpatch.pl warning that I missed before. There's
a bunch of noise in checkpatch.pl due to an odd macro
usage, but I think any remaining checkpatch.pl warnings
are OK.
---
This patch series adds a sysfs layer to libfcoe. It adds
a sysfs instance for FIP controllers (a SW entity) and
discovered Fibre Channel Forwarders (FCFs), which are
simply FCoE switches.
The new sysfs code is used by any driver that currently
uses libfcoe, namely fcoe.ko and bnx2fc_fcoe.ko. Any other
FCoE capable device that wishes to use the high-level APIs
defined in fcoe_syfs.h may, without having to use the
the protocol processing portions of libfcoe.
The code borrows heavily from the FC Transport, but is
less complicated because it does not need to interact
with the SCSI layer directly.
I think one thing to consider with this series is that
drivers, such as traditional HBAs, which wish to use
this infrastructure will now need to depend on libfcoe.ko.
It was either this or create a superfluous kernel module;
I think libfcoe is an appropriate place for this code.
This series was created against scsi-misc + 9 patches
mailed by me to linux-scsi on 03/09/12. (Note that 10
patches were mailed, but that patch 01/10 will be dropped)
I'm not sure if there's somewhere I should cross-post
this for general sysfs review. I don't think I'm doing
anything odd; I added Greg K-H to the CC list to try and
get some sysfs eyes on this code.
---
Robert Love (4):
fcoe: Allocate fcoe_ctlr with fcoe_interface, not as a member
bnx2fc: Allocate fcoe_ctlr with bnx2fc_interface, not as a member
libfcoe: Add fcoe_sysfs
fcoe, bnx2fc, libfcoe: SW FCoE and bnx2fc use FCoE Syfs
Documentation/ABI/testing/sysfs-bus-fcoe | 77 +++
drivers/scsi/bnx2fc/bnx2fc.h | 7
drivers/scsi/bnx2fc/bnx2fc_els.c | 2
drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 171 +++++-
drivers/scsi/bnx2fc/bnx2fc_hwi.c | 39 +
drivers/scsi/fcoe/Makefile | 2
drivers/scsi/fcoe/fcoe.c | 196 +++++--
drivers/scsi/fcoe/fcoe.h | 8
drivers/scsi/fcoe/fcoe_ctlr.c | 159 +++++-
drivers/scsi/fcoe/fcoe_sysfs.c | 832 ++++++++++++++++++++++++++++++
drivers/scsi/fcoe/fcoe_transport.c | 13
include/scsi/fcoe_sysfs.h | 124 ++++
include/scsi/libfcoe.h | 27 +
13 files changed, 1524 insertions(+), 133 deletions(-)
create mode 100644 Documentation/ABI/testing/sysfs-bus-fcoe
create mode 100644 drivers/scsi/fcoe/fcoe_sysfs.c
create mode 100644 include/scsi/fcoe_sysfs.h
--
Thanks, //Rob
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