kernel.git/drivers/scsi/fnic, branch linux-2.6.36.y

scsi: remove private BIT macros

2010-08-11T15:59:01Z

A couple of scsi drivers define a BIT() macro, duplicating the one in bitops.h. Cc: Jing Huang Cc: Robert Love Cc: James Bottomley Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[SCSI] libfcoe: fcoe: fnic: add FIP VN2VN point-to-multipoint support

2010-07-28T14:05:56Z

The FC-BB-6 committee is proposing a new FIP usage model called VN_port to VN_port mode. It allows VN_ports to discover each other over a loss-free L2 Ethernet without any FCF or Fibre-channel fabric services. This is point-to-multipoint. There is also a variant of this called point-to-point which provides for making sure there is just one pair of ports operating over the Ethernet fabric. We add these new states: VNMP_START, _PROBE1, _PROBE2, _CLAIM, and _UP. These usually go quickly in that sequence. After waiting a random amount of time up to 100 ms in START, we select a pseudo-random proposed locally-unique port ID and send out probes in states PROBE1 and PROBE2, 100 ms apart. If no probe responses are heard, we proceed to CLAIM state 400 ms later and send a claim notification. We wait another 400 ms to receive claim responses, which give us a list of the other nodes on the network, including their FC-4 capabilities. After another 400 ms we go to VNMP_UP state and should start interoperating with any of the nodes for whic we receivec claim responses. More details are in the spec.j Add the new mode as FIP_MODE_VN2VN. The driver must specify explicitly that it wants to operate in this mode. There is no automatic detection between point-to-multipoint and fabric mode, and the local port initialization is affected, so it isn't anticipated that there will ever be any such automatic switchover. It may eventually be possible to have both fabric and VN2VN modes on the same L2 network, which may be done by two separate local VN_ports (lports). When in VN2VN mode, FIP replaces libfc's fabric-oriented discovery module with its own simple code that adds remote ports as they are discovered from incoming claim notifications and responses. These hooks are placed by fcoe_disc_init(). A linear list of discovered vn_ports is maintained under the fcoe_ctlr struct. It is expected to be short for now, and accessed infrequently. It is kept under RCU for lock-ordering reasons. The lport and/or rport mutexes may be held when we need to lookup a fcoe_vnport during an ELS send. Change fcoe_ctlr_encaps() to lookup the destination vn_port in the list of peers for the destination MAC address of the FIP-encapsulated frame. Add a new function fcoe_disc_init() to initialize just the discovery portion of libfcoe for VN2VN mode. Signed-off-by: Joe Eykholt Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] libfcoe: fcoe: fnic: change fcoe_ctlr_init interface to specify mode

2010-07-28T14:05:52Z

There are three modes that libfcoe currently supports, and a new one is coming. Change the fcoe_ctlr_init() interface to add the mode desired. This should not change any functionality. Signed-off-by: Joe Eykholt Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fnic: fnic_scsi.c: clean up

2010-07-27T17:01:51Z

In fnic_abort_cmd() and fnic_device_reset() assign `rport' earlier to make FNIC_SCSI_DBG() calls cleaner. In fnic_clean_pending_aborts() `rport' is not used. Signed-off-by: Roel Kluin Acked-by: Abhijeet Joglekar Signed-off-by: Andrew Morton Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fcoe, fnic, libfc: increased CDB size to 16 bytes for fcoe.

2010-04-11T19:02:39Z

No reason to restrict CDB size to 12 bytes in fcoe, so increased to 16 so that 16 bytes SCSI CDB doesn't fail. Uses common define to set max_cmd_len for fcoe and fnic, fnic is already setting max_cmd_len to 16. sg_readcap -l fails without this fix. Signed-off-by: Vasu Dev Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fnic: Change fnic_flush_tx() to flush tx instead of rx queue

2010-04-11T19:02:37Z

fnic_flush_tx() is used to send frames held while fabric login is in progress. The frames are held in tx_queue, but fnic_flush_tx() was incorrectly flushing from recv_queue which is used for received frames. Signed-off-by: Brian Uchino Signed-off-by: Abhijeet Joglekar Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fnic: Update version to 1.4.0.145

2010-04-11T19:02:35Z

New fnic version to mark inclusion of tx_flush bugfix. Signed-off-by: Brian Uchino Signed-off-by: Abhijeet Joglekar Signed-off-by: Robert Love Signed-off-by: James Bottomley

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30T13:02:32Z

percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo Guess-its-ok-by: Christoph Lameter Cc: Ingo Molnar Cc: Lee Schermerhorn

[SCSI] fnic: Set fnic driver version

2010-02-17T23:43:54Z

Update fnic driver version. Signed-off-by: Venkata Siva Vijayendra Bhamidipati Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fnic: lport stats need to be initialized in fnic_probe()

2010-02-17T23:43:52Z

Incorrect initialization of lport stats in fnic_probe() causes fnic to crash at bootup and a node hang if fip is enabled and all links are brought up after fnic is loaded. Signed-off-by: Joe Eykholt Signed-off-by: Venkata Siva Vijayendra Bhamidipati Signed-off-by: Robert Love Signed-off-by: James Bottomley