On Wed, 22 Sep 2010 15:49:23 -0700 "Nicholas A. Bellinger" <nab@xxxxxxxxxxxxxxx> wrote: > From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> > > The patch adds core generic target engine functionality including processing of struct se_cmd > generation of N struct se_task, control CDB emulation, sense data, memory allocation, and > and mapping from fabric module allocated memory using linked list struct scatterlist > style memory based on the limitiations of the underlying TCM HBA and Device backstores. > > The TCM layer sits is above Linux/SCSI, Linux/BLOCK and Linux/VFS subsystems, and > communicates with these subsystems (and local RAMDISK plugins) using an API of function > pointers in se_subsystem_api_t. It provides processing capabilties and emulation for SCSI > logic and CDBs in a generic manner to storage object LUNs provided from Linux storage > subsystems backend storage devices. > > Signed-off-by: Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx> > --- > drivers/target/target_core_scdb.c | 158 + > drivers/target/target_core_scdb.h | 15 + > drivers/target/target_core_transport.c | 8860 ++++++++++++++++++++++++++++++++ > include/target/target_core_transport.h | 570 ++ > 4 files changed, 9603 insertions(+), 0 deletions(-) > create mode 100644 drivers/target/target_core_scdb.c > create mode 100644 drivers/target/target_core_scdb.h > create mode 100644 drivers/target/target_core_transport.c > create mode 100644 include/target/target_core_transport.h Can a driver cleanly overwrite cmd->transport_emulate_cdb? ibmvscsi target driver needs to the specific responses for INQUIRY and REPORT_LUNS. I guess that the driver can ignore the response buffer from tcm and create the own but it would be nice if the driver can do cleanly. -- 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
