Nicholas Bellinger 07bde79a5c target: Add SCF_EMULATE_QUEUE_FULL -> transport_handle_queue_full ... This patch adds SCF_EMULATE_QUEUE_FULL support using -EAGAIN failures via transport_handle_queue_full() to signal queue full in completion path TFO->queue_data_in() and TFO->queue_status() callbacks. This is done using a new se_cmd->transport_qf_callback() to handle the following queue full exception cases within target core: *) TRANSPORT_COMPLETE_OK (for completion path queue full) *) TRANSPORT_COMPLETE_QF_WP (for TRANSPORT_WRITE_PENDING queue full) *) transport_send_check_condition_and_sense() failure paths in transport_generic_request_failure() and transport_generic_complete_ok() All logic is driven using se_device->qf_work_queue -> target_qf_do_work() to to requeue outstanding se_cmd at the head of se_dev->queue_obj->qobj_list for transport_processing_thread() execution. Tested using tcm_qla2xxx with MAX_OUTSTANDING_COMMANDS=128 for FCP READ to trigger the TRANSPORT_COMPLETE_OK queue full cases, and a simulated TFO->write_pending() -EAGAIN failure to trigger TRANSPORT_COMPLETE_QF_WP. Reported-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>		2011-07-22 09:37:45 +00:00
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configfs_macros.h
target_core_base.h	target: Add SCF_EMULATE_QUEUE_FULL -> transport_handle_queue_full	2011-07-22 09:37:45 +00:00
target_core_configfs.h	[SCSI] target: add initial statistics	2011-03-23 11:36:50 -05:00
target_core_device.h	target: More core cleanups from AGrover (round 2)	2011-07-22 09:37:43 +00:00
target_core_fabric_configfs.h
target_core_fabric_lib.h
target_core_fabric_ops.h	target: merge release_cmd methods	2011-07-22 09:37:44 +00:00
target_core_tmr.h	[SCSI] target: Convert TMR REQ/RSP definitions to target namespace	2011-03-23 11:36:35 -05:00
target_core_tpg.h
target_core_transport.h	target: Add transport_handle_cdb_direct optimization	2011-07-22 09:37:44 +00:00