From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> Hi folks, The following series adds explict TMR_ABORT_TASK support using session command list descriptors for target_submit_cmd() fabric module users. The logic performs explict abort using tmr->ref_task_tag for outstanding descriptors have not been set CMD_T_COMPLETE in transport_complete_task() during backend I/O completion. It also cancels se_cmd->work and wait for backing I/O to complete before attempting to send SAM_STAT_TASK_ABORTED and perform necessary target_put_sess_cmd() to drop outstanding cmd_kref references. So far this has been tested with tcm_qla2xxx using target-core debug code to simulate delayed execution of a referenced tag descriptor in the following locations: - Before execution of tasks in transport_generic_new_cmd() - Before completion of tasks in transport_complete_task() - After completion of tasks in transport_complete_task() The code can use some more testing and review, but so far these changes with simulated I/O delays are generating SAM_STAT_TASK_ABORTED status for the aborted tag, or failing with TMR_TASK_DOES_NOT_EXIST as expected.. Please have a look, --nab Nicholas Bellinger (4): target: Add SCF_ACK_KREF flag for acknowledgement kref target: Make target_release_cmd_kref release on empty list target: Add TMR_ABORT_TASK task management support qla_target/tcm_qla2xxx: Fix TMR_ABORT_TASK with target mode usage drivers/scsi/qla2xxx/qla_target.c | 15 +++---- drivers/scsi/qla2xxx/qla_target.h | 2 +- drivers/scsi/qla2xxx/tcm_qla2xxx.c | 6 ++- drivers/scsi/qla2xxx/tcm_qla2xxx.h | 3 +- drivers/target/target_core_internal.h | 2 + drivers/target/target_core_tmr.c | 64 ++++++++++++++++++++++++++++++++ drivers/target/target_core_transport.c | 26 ++++++++---- include/target/target_core_base.h | 3 +- 8 files changed, 100 insertions(+), 21 deletions(-) -- 1.7.2.5 -- 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
