From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxx> 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(-) -- 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
