Hi all,
(taking up an old thread:)
here's the second batch of patches for my EH rework.
It modifies the reset callbacks for SCSI drivers
such that the final conversion to drop the 'struct scsi_cmnd'
argument and use the entity in question (host, bus, target, device)
as the argument to the SCSI EH callbacks becomes possible.
The second part covers drivers which require a bit more love.
In particular the fnic, snic, and csiostor drivers require a tag to
send TMFs. So to handle that I've modified the patches to call
scsi_alloc_request() with the NOWAIT flag; that will return a scsi
command with a valid tag. It might fail (eg when the tagset is full),
but in these cases it might be better to fall back to host_reset anyway.
As usual, comments and reviews are welcome.
Changes to v4:
- rework snic to use a dedicated tag for host reset
- rework snic to allocate TMFs on the fly
- rework fnic to allocate TMFs on the fly
- rework csiostor to allocat TMFs on the fly
- drop fc_block_rport() from zfcp host_reset
- Rebase to latest linus tree
Changes to v3:
- Move fnic and snic patches to the next patchset
- Include reviews from Ewan Milne
Changes to v2:
- Include reviews from John Garry
- move mpi3mr, zfcp, sym53c8xx_2, and qla1280 patches to the
next patchset
Changes to the initial version:
- Include reviews from Christoph
- Fixup build robot issues
Hannes Reinecke (15):
zfcp: do not wait for rports to become unblocked after host reset
bfa: Do not use scsi command to signal TMF status
aha152x: look for stuck command when resetting device
a1000u2w: do not rely on the command for inia100_device_reset()
fas216: Rework device reset to not rely on SCSI command pointer
xen-scsifront: add scsi device as argument to scsifront_do_request()
xen-scsifront: rework scsifront_action_handler()
libiscsi: use cls_session as argument for target and session reset
scsi_transport_iscsi: use session as argument for
iscsi_block_scsi_eh()
snic: reserve tag for TMF
snic: allocate device reset command
snic: Use scsi_host_busy_iter() to traverse commands
fnic: allocate device reset command on the fly
fnic: use fc_block_rport() correctly
csiostor: use separate TMF command
drivers/s390/scsi/zfcp_scsi.c | 4 -
drivers/scsi/a100u2w.c | 43 +---
drivers/scsi/aha152x.c | 26 ++-
drivers/scsi/arm/fas216.c | 39 ++--
drivers/scsi/be2iscsi/be_main.c | 10 +-
drivers/scsi/bfa/bfad_im.c | 112 +++++-----
drivers/scsi/bfa/bfad_im.h | 2 +
drivers/scsi/csiostor/csio_scsi.c | 72 ++++---
drivers/scsi/fnic/fnic.h | 1 -
drivers/scsi/fnic/fnic_scsi.c | 115 +++++-----
drivers/scsi/libiscsi.c | 21 +-
drivers/scsi/qla4xxx/ql4_os.c | 34 +--
drivers/scsi/scsi_transport_iscsi.c | 6 +-
drivers/scsi/snic/snic.h | 2 +-
drivers/scsi/snic/snic_main.c | 5 +-
drivers/scsi/snic/snic_scsi.c | 319 ++++++++++++----------------
drivers/scsi/xen-scsifront.c | 49 +++--
include/scsi/libiscsi.h | 2 +-
include/scsi/scsi_transport_iscsi.h | 2 +-
19 files changed, 414 insertions(+), 450 deletions(-)
--
2.35.3
