From a63607855224702ea17e6016ecf3f7d544e83625 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Fri, 18 Nov 2011 20:36:22 -0800 Subject: target: Add target_submit_cmd() for process context fabric submission This patch adds a target_submit_cmd() caller that can be used by fabrics to submit an uninitialized se_cmd descriptor to an struct se_session + unpacked_lun from workqueue process context. This call will invoke the following steps: - transport_init_se_cmd() to setup se_cmd specific pointers - Obtain se_cmd->cmd_kref references with target_get_sess_cmd() - set se_cmd->t_tasks_bidi - transport_lookup_cmd_lun() to setup struct se_cmd->se_lun from the passed unpacked_lun - transport_generic_allocate_tasks() to setup the passed *cdb, and - transport_handle_cdb_direct() handle READ dispatch or WRITE ready-to-transfer callback to fabric v2 changes from hch feedback: *) Add target_sc_flags_table for target_submit_cmd flags *) Rename bidi parameter to flags, add TARGET_SCF_BIDI_OP *) Convert checks to BUG_ON *) Add out_check_cond for transport_send_check_condition_and_sense usage v3 changes: *) Add TARGET_SCF_ACK_KREF for target_submit_cmd into target_get_sess_cmd to determine when the fabric caller is expecting a second kref_put() from fabric packet acknowledgement. Cc: Christoph Hellwig Cc: Roland Dreier Signed-off-by: Nicholas Bellinger --- include/target/target_core_base.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/target/target_core_base.h') diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index af088a9e4905..28190dc10eef 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -226,6 +226,11 @@ enum tcm_sense_reason_table { TCM_RESERVATION_CONFLICT = 0x10, }; +enum target_sc_flags_table { + TARGET_SCF_BIDI_OP = 0x01, + TARGET_SCF_ACK_KREF = 0x02, +}; + /* fabric independent task management function values */ enum tcm_tmreq_table { TMR_ABORT_TASK = 1, -- cgit v1.2.3