linux/include/scsi, branch v2.6.35

SCSI: implement sd_unlock_native_capacity()

2010-06-02T17:50:04Z

Implement sd_unlock_native_capacity() method which calls into hostt->unlock_native_capacity() if implemented. This will be invoked by block layer if partitions extend beyond the end of the device and can be used to implement, for example, on-demand ATA host protected area unlocking. Signed-off-by: Tejun Heo Cc: Ben Hutchings Signed-off-by: Jeff Garzik

[SCSI] libfc: Move the port_id into lport

2010-05-17T02:22:34Z

This patch creates a port_id member in struct fc_lport. This allows libfc to just deal with fc_lport instances instead of calling into the fc_host to get the port_id. This change helps in only using symbols necessary for operation from the libfc structures. libfc still needs to change the fc_host_port_id() if the port_id changes so the presentation layer (scsi_transport_fc) can provide the user with the correct value, but libfc shouldn't rely on the presentation layer for operational values. Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] libfc: Remove unused fc_get_host_port_type

2010-05-17T02:22:29Z

Remove this unused routine. Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] Unexport scsi/scsi.h from headers_install

2010-05-02T15:45:12Z

The scsi/scsi.h header is normally provided by the libc (and was not exported by the kernel since 2.6.24) and has been until it was re-exported with 2.6.31. The kernel version is not userspace clean and does not appear to provide anything useable in userland over the (e)glibc version. Signed-off-by: Tom Rini Signed-off-by: James Bottomley

[SCSI] Add missing scsi command definitions

2010-04-30T17:46:17Z

Add definitions for VERIFY(12) and VERIFY(32). Signed-off-by: Martin K. Petersen 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] libfc: fix hton24 macro to take expressions as args

2010-04-11T19:02:34Z

hton24(p + 3, value) would fail to compile because p + 3[0] is not a valid expression. Went ahead and converted hton24 and ntoh24 to inline functions, which is better because the parameters are evalutated only once. Signed-off-by: Joe Eykholt Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] Allow FC LLD to fast-fail scsi eh by introducing new eh return

2010-04-11T14:49:33Z

If the scsi eh is running and then a FC LLD calls fc_remote_port_delete, the SCSI commands sent from the eh will fail. To prevent this, a FC LLD can call fc_block_scsi_eh from the eh callback, blocking the eh thread until the dev_loss_tmo fires or the remote port is available again. If (e.g. for a multipathing setup) the dev_loss_tmo is set to a very large value, thus preventing the scsi device removal , the scsi eh can block for a long time. For multipathing, the fast_io_fail_tmo is then set to a low value to detect path problems sooner. This patch introduces a new return code FAST_IO_FAIL. The function fc_block_scsi_eh now returns FAST_IO_FAIL when the fast_io_fail_tmo fires. This indicates that the LLD terminated all pending I/O requests and there are no more pending SCSI commands for the scsi eh to wait for. This return code can be passed back to the scsi eh to stop the escalation and finish the recovery process for this device. Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley

[SCSI] libfc, libfcoe, fcoe: use smp_processor_id() only when preempt disabled

2010-04-11T14:23:44Z

When the kernel is configured for preemption, using smp_processor_id() when preemption is enabled causes a warning backtrace and is wrong since we could move off of that CPU as soon as we get the ID, and we would be referencing the wrong CPU, and possibly an invalid one if it could be hotswapped out. Remove the fc_lport_get_stats() function and explicitly use per_cpu_ptr() to get the statistics. Where preemption has been disabled by holding a _bh lock continue to use smp_processor_id(), but otherwise use get_cpu()/put_cpu(). In fcoe_recv_frame() also changed the cases where we return in the middle to do a goto to the code which bumps ErrorFrames and does a put_cpu(). Two of these cases didn't bump ErrorFrames before, but doing so is harmless because they "can't happen", due to prior length checks. Also rearranged code in fcoe_recv_frame() to have only one call to fc_exch_recv(). It's just as efficient and saves a call to put_cpu(). In fc_fcp.c, adjusted a FIXME comment for code which doesn't need fixing. Signed-off-by: Joe Eykholt Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] libfcoe: eliminate unused link and last_link fields

2010-04-11T14:23:38Z

The link and last_link fields in the fcoe_ctlr struct are no longer useful, since they are always set to the same value, and FIP always calls libfc to pass link information to the lport. Eliminate those fields and rename link_work to timer_work, since it no longer has any link change work to do. Thanks to Brian Uchino for discovering this issue. Signed-off-by: Joe Eykholt Signed-off-by: Robert Love Signed-off-by: James Bottomley