lkml.org 
[lkml]   [2010]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/2] tcm/tcm_loop: Add BIDI support and XDWRITE_READ_10 emulation
Date
From: Nicholas Bellinger <nab@linux-iscsi.org>

Greetings Boaz, Tomo-san and Co,

This series adds initial support for functional bidirectional CDBs into TCM_Core
and the TCM_Loop fabric module. So far this is limited to XDWRITE_READ_10 emulation
following scsi_debug.c, but everything appears to now be functioning as expected.

This first patch adds support for BIDI operations and XDWRITE_READ_10 emulation
into TCM_Core for the individual I/O descriptor setup, memory mapping, callback
and release codepaths.

The second patch enables BIDI operations with the TCM_Loop Virtual SCSI LLD
fabric module using the updated callers.

So far this has been lightly tested on v2.6.36-rc3 HVM using custom userspace BSG
code to issue XDWRITE_READ_10 I/O into TCM_Loop LUNs using FILEIO backstores.
Support for BIDI CDBs will also extend to LIO-Target and other TCM fabric modules
in the near future.

Comments are welcome!

Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>

Nicholas Bellinger (2):
tcm: Add support for BIDI operation and XDWRITE_READ_10 emulation
tcm_loop: Add DMA_BIDIRECTIONAL CDB support

drivers/target/target_core_transport.c | 282 +++++++++++++++++++++---
drivers/target/tcm_loop/tcm_loop_fabric_scsi.c | 48 +++-
include/target/target_core_base.h | 9 +-
include/target/target_core_transport.h | 10 +-
4 files changed, 297 insertions(+), 52 deletions(-)



\
 
 \ /
  Last update: 2010-09-15 14:09    [W:0.048 / U:0.544 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site