[PATCH v1 0/3] Include protection information in iscsi header

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



At the SCSI transport level, there is no distinction between
user data and protection information. Thus, iscsi header field
"expected data transfer length" should include protection
information.

Patch #1 introduces scsi helpers scsi_transfer_length (compute
wire transfer byte count) and scsi_prot_len (compute protection
information byte count).

Patch #2 modifies iscsi initiator to set correct wire transfer length
in iscsi header data_length field (and modifies iser accordingly).

Patch #3 modifies target core to expect protection information included
in the wire transfer length (and modifies loopback transport to do so).

I have 2 patches that convert lpfc/qla2xxx drivers to use scsi helpers
but these are completely untested at the moment. Once we get this set
to land upstream, I can queue them up as RFCs.

Changes from v0:
- Introduce scsi helpers to compute correct transfer length in the
  presence of protection information (instead of having each transport
  doing the same computation).
- Modify iscsi to set correct transfer length using scsi helpers
- Modify loopback transport to set correct transfer length using
  scsi helpers

Sagi Grimberg (3):
  scsi_cmnd: Introduce scsi_transfer_length helper
  libiscsi, iser: Adjust data_length to include protection information
  TARGET/sbc,loopback: Adjust command data length in case pi exists on
    the wire

 drivers/infiniband/ulp/iser/iser_initiator.c |   34 ++++++----------------
 drivers/scsi/libiscsi.c                      |   18 ++++++------
 drivers/target/loopback/tcm_loop.c           |   15 ++++++++--
 drivers/target/target_core_sbc.c             |   15 ++++++++-
 include/scsi/scsi_cmnd.h                     |   39 ++++++++++++++++++++++++++
 5 files changed, 83 insertions(+), 38 deletions(-)

--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Samba]     [Device Mapper]
  Powered by Linux