• Nicholas Bellinger's avatar
    iscsi-target: Refactor RX PDU logic + export request PDU handling · 3e1c81a9
    Nicholas Bellinger authored
    This patch refactors existing traditional iscsi RX side PDU handling
    to use iscsit_transport, and exports the necessary logic for external
    transport modules.
    
    This includes:
    
    - Refactor iscsit_handle_scsi_cmd() into PDU setup / processing
    - Add updated iscsit_handle_scsi_cmd() for tradtional iscsi code
    - Add iscsit_set_unsoliticed_dataout() wrapper
    - Refactor iscsit_handle_data_out() into PDU check / processing
    - Add updated iscsit_handle_data_out() for tradtional iscsi code
    - Add iscsit_handle_nop_out() + iscsit_handle_task_mgt_cmd() to
      accept pre-allocated struct iscsi_cmd
    - Add iscsit_build_r2ts_for_cmd() caller for iscsi_target_transport
      to handle ISTATE_SEND_R2T for TX immediate queue
    - Refactor main traditional iscsi iscsi_target_rx_thread() PDU switch
      into iscsi_target_rx_opcode() using iscsit_allocate_cmd()
    - Turn iscsi_target_rx_thread() process context into NOP for
      ib_isert side work-queue.
    
    v5 changes:
    
    - Make iscsit_handle_scsi_cmd() static (Fengguang)
    - Fix iscsit_handle_scsi_cmd() exception se_cmd leak (nab)
    
    v3 changes:
    - Add extra target_put_sess_cmd call in iscsit_add_reject_from_cmd
      after completion
    
    v2 changes:
    
    - Disable iscsit_ack_from_expstatsn() usage for RDMAExtentions=Yes
    - Disable iscsit_allocate_datain_req() usage for RDMAExtentions=Yes
    - Add target_get_sess_cmd() reference counting to
      iscsit_setup_scsi_cmd()
    - Add TFO->lio_check_stop_free() fabric API caller
    - Add export of iscsit_stop_dataout_timer() symbol
    - Add iscsit_build_r2ts_for_cmd() for iscsit_transport->iscsit_get_dataout()
    - Convert existing usage of iscsit_build_r2ts_for_cmd() to
      ->iscsit_get_dataout()
    - Drop RDMAExtentions=Yes specific check in iscsit_build_r2ts_for_cmd()
    - Fix RDMAExtentions -> RDMAExtensions typo (andy)
    - Pass correct dump_payload value into iscsit_get_immediate_data()
      for iscsit_handle_scsi_cmd()
    Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
    3e1c81a9
iscsi_target.h 2.33 KB