qla2xxx: Make trace flags more readable
Trace flags are useful during debugging crash dumps using crash utility. These trace flags makes it easier to understand various states a command has successfully completed. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Quinn Tran
Nicholas Bellinger
Родитель
be92fc3fde
Коммит
1eb42f965c
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@ -3297,7 +3297,7 @@ int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
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return EIO;
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}
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cmd->aborted = 1;
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cmd->cmd_flags |= BIT_6;
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cmd->trc_flags |= TRC_ABORT;
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spin_unlock_irqrestore(&cmd->cmd_lock, flags);
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qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1);
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@ -3345,7 +3345,7 @@ static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
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struct qla_tgt_srr_imm *imm;
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tgt->ctio_srr_id++;
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cmd->cmd_flags |= BIT_15;
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cmd->trc_flags |= TRC_SRR_CTIO;
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
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"qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
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@ -3528,7 +3528,7 @@ qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
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dump_stack();
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}
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cmd->cmd_flags |= BIT_17;
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cmd->trc_flags |= TRC_FLUSH;
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ha->tgt.tgt_ops->free_cmd(cmd);
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}
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@ -3694,7 +3694,7 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
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*/
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if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
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(!cmd->aborted)) {
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cmd->cmd_flags |= BIT_13;
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cmd->trc_flags |= TRC_CTIO_ERR;
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if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
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return;
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}
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@ -3702,7 +3702,7 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
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skip_term:
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if (cmd->state == QLA_TGT_STATE_PROCESSED) {
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cmd->cmd_flags |= BIT_12;
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cmd->trc_flags |= TRC_CTIO_DONE;
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} else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
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cmd->state = QLA_TGT_STATE_DATA_IN;
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@ -3712,11 +3712,11 @@ skip_term:
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ha->tgt.tgt_ops->handle_data(cmd);
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return;
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} else if (cmd->aborted) {
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cmd->cmd_flags |= BIT_18;
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cmd->trc_flags |= TRC_CTIO_ABORTED;
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
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"Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
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} else {
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cmd->cmd_flags |= BIT_19;
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cmd->trc_flags |= TRC_CTIO_STRANGE;
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
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"qla_target(%d): A command in state (%d) should "
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"not return a CTIO complete\n", vha->vp_idx, cmd->state);
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@ -3781,7 +3781,7 @@ static void __qlt_do_work(struct qla_tgt_cmd *cmd)
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int ret, fcp_task_attr, data_dir, bidi = 0;
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cmd->cmd_in_wq = 0;
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cmd->cmd_flags |= BIT_1;
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cmd->trc_flags |= TRC_DO_WORK;
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if (tgt->tgt_stop)
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goto out_term;
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@ -3833,7 +3833,7 @@ out_term:
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* cmd has not sent to target yet, so pass NULL as the second
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* argument to qlt_send_term_exchange() and free the memory here.
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*/
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cmd->cmd_flags |= BIT_2;
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cmd->trc_flags |= TRC_DO_WORK_ERR;
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spin_lock_irqsave(&ha->hardware_lock, flags);
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qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0);
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@ -3884,7 +3884,7 @@ static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
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cmd->loop_id = sess->loop_id;
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cmd->conf_compl_supported = sess->conf_compl_supported;
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cmd->cmd_flags = 0;
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cmd->trc_flags = 0;
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cmd->jiffies_at_alloc = get_jiffies_64();
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cmd->reset_count = vha->hw->chip_reset;
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@ -4020,7 +4020,7 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
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}
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cmd->cmd_in_wq = 1;
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cmd->cmd_flags |= BIT_0;
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cmd->trc_flags |= TRC_NEW_CMD;
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cmd->se_cmd.cpuid = ha->msix_count ?
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ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND;
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@ -4712,7 +4712,7 @@ static void qlt_handle_srr(struct scsi_qla_host *vha,
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0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
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spin_unlock_irqrestore(&ha->hardware_lock, flags);
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if (xmit_type & QLA_TGT_XMIT_DATA) {
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cmd->cmd_flags |= BIT_8;
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cmd->trc_flags |= TRC_SRR_XRDY;
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qlt_rdy_to_xfer(cmd);
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}
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} else {
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@ -4731,7 +4731,7 @@ static void qlt_handle_srr(struct scsi_qla_host *vha,
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/* Transmit response in case of status and data-in cases */
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if (resp) {
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cmd->cmd_flags |= BIT_7;
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cmd->trc_flags |= TRC_SRR_RSP;
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qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
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}
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@ -4747,7 +4747,7 @@ out_reject:
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cmd->state = QLA_TGT_STATE_DATA_IN;
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dump_stack();
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} else {
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cmd->cmd_flags |= BIT_9;
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cmd->trc_flags |= TRC_SRR_TERM;
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qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
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}
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spin_unlock_irqrestore(&ha->hardware_lock, flags);
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@ -965,35 +965,28 @@ struct qla_tgt_sess {
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qlt_plogi_ack_t *plogi_link[QLT_PLOGI_LINK_MAX];
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};
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typedef enum {
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/*
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* BIT_0 - Atio Arrival / schedule to work
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* BIT_1 - qlt_do_work
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* BIT_2 - qlt_do work failed
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* BIT_3 - xfer rdy/tcm_qla2xxx_write_pending
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* BIT_4 - read respond/tcm_qla2xx_queue_data_in
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* BIT_5 - status respond / tcm_qla2xx_queue_status
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* BIT_6 - tcm request to abort/Term exchange.
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* pre_xmit_response->qlt_send_term_exchange
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* BIT_7 - SRR received (qlt_handle_srr->qlt_xmit_response)
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* BIT_8 - SRR received (qlt_handle_srr->qlt_rdy_to_xfer)
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* BIT_9 - SRR received (qla_handle_srr->qlt_send_term_exchange)
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* BIT_10 - Data in - hanlde_data->tcm_qla2xxx_handle_data
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* BIT_12 - good completion - qlt_ctio_do_completion -->free_cmd
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* BIT_13 - Bad completion -
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* qlt_ctio_do_completion --> qlt_term_ctio_exchange
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* BIT_14 - Back end data received/sent.
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* BIT_15 - SRR prepare ctio
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* BIT_16 - complete free
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* BIT_17 - flush - qlt_abort_cmd_on_host_reset
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* BIT_18 - completion w/abort status
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* BIT_19 - completion w/unknown status
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* BIT_20 - tcm_qla2xxx_free_cmd
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*/
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CMD_FLAG_DATA_WORK = BIT_11,
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CMD_FLAG_DATA_WORK_FREE = BIT_21,
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} cmd_flags_t;
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enum trace_flags {
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TRC_NEW_CMD = BIT_0,
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TRC_DO_WORK = BIT_1,
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TRC_DO_WORK_ERR = BIT_2,
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TRC_XFR_RDY = BIT_3,
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TRC_XMIT_DATA = BIT_4,
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TRC_XMIT_STATUS = BIT_5,
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TRC_SRR_RSP = BIT_6,
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TRC_SRR_XRDY = BIT_7,
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TRC_SRR_TERM = BIT_8,
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TRC_SRR_CTIO = BIT_9,
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TRC_FLUSH = BIT_10,
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TRC_CTIO_ERR = BIT_11,
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TRC_CTIO_DONE = BIT_12,
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TRC_CTIO_ABORTED = BIT_13,
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TRC_CTIO_STRANGE= BIT_14,
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TRC_CMD_DONE = BIT_15,
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TRC_CMD_CHK_STOP = BIT_16,
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TRC_CMD_FREE = BIT_17,
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TRC_DATA_IN = BIT_18,
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TRC_ABORT = BIT_19,
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};
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struct qla_tgt_cmd {
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struct se_cmd se_cmd;
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@ -1016,6 +1009,8 @@ struct qla_tgt_cmd {
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unsigned int cmd_sent_to_fw:1;
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unsigned int cmd_in_wq:1;
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unsigned int aborted:1;
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unsigned int data_work:1;
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unsigned int data_work_free:1;
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struct scatterlist *sg; /* cmd data buffer SG vector */
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int sg_cnt; /* SG segments count */
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@ -1040,7 +1035,7 @@ struct qla_tgt_cmd {
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uint64_t jiffies_at_alloc;
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uint64_t jiffies_at_free;
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cmd_flags_t cmd_flags;
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enum trace_flags trc_flags;
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};
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struct qla_tgt_sess_work_param {
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@ -282,10 +282,10 @@ static void tcm_qla2xxx_complete_free(struct work_struct *work)
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cmd->cmd_in_wq = 0;
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WARN_ON(cmd->cmd_flags & BIT_16);
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WARN_ON(cmd->trc_flags & TRC_CMD_FREE);
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cmd->vha->tgt_counters.qla_core_ret_sta_ctio++;
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cmd->cmd_flags |= BIT_16;
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cmd->trc_flags |= TRC_CMD_FREE;
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transport_generic_free_cmd(&cmd->se_cmd, 0);
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}
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@ -299,8 +299,8 @@ static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
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cmd->vha->tgt_counters.core_qla_free_cmd++;
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cmd->cmd_in_wq = 1;
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BUG_ON(cmd->cmd_flags & BIT_20);
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cmd->cmd_flags |= BIT_20;
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WARN_ON(cmd->trc_flags & TRC_CMD_DONE);
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cmd->trc_flags |= TRC_CMD_DONE;
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INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
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queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
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@ -315,7 +315,7 @@ static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
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if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
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cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
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cmd->cmd_flags |= BIT_14;
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cmd->trc_flags |= TRC_CMD_CHK_STOP;
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}
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return target_put_sess_cmd(se_cmd);
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@ -377,7 +377,7 @@ static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
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cmd->se_cmd.se_cmd_flags);
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return 0;
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}
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cmd->cmd_flags |= BIT_3;
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cmd->trc_flags |= TRC_XFR_RDY;
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cmd->bufflen = se_cmd->data_length;
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cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
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@ -493,9 +493,9 @@ static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
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cmd->cmd_in_wq = 0;
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spin_lock_irqsave(&cmd->cmd_lock, flags);
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cmd->cmd_flags |= CMD_FLAG_DATA_WORK;
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cmd->data_work = 1;
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if (cmd->aborted) {
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cmd->cmd_flags |= CMD_FLAG_DATA_WORK_FREE;
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cmd->data_work_free = 1;
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spin_unlock_irqrestore(&cmd->cmd_lock, flags);
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tcm_qla2xxx_free_cmd(cmd);
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@ -532,7 +532,7 @@ static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
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*/
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static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
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{
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cmd->cmd_flags |= BIT_10;
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cmd->trc_flags |= TRC_DATA_IN;
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cmd->cmd_in_wq = 1;
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INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
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queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
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@ -627,7 +627,7 @@ static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
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return 0;
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}
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cmd->cmd_flags |= BIT_4;
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cmd->trc_flags |= TRC_XMIT_DATA;
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cmd->bufflen = se_cmd->data_length;
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cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
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@ -658,11 +658,11 @@ static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
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cmd->sg_cnt = 0;
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cmd->offset = 0;
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cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
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if (cmd->cmd_flags & BIT_5) {
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pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
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if (cmd->trc_flags & TRC_XMIT_STATUS) {
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pr_crit("Multiple calls for status = %p.\n", cmd);
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dump_stack();
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}
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cmd->cmd_flags |= BIT_5;
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cmd->trc_flags |= TRC_XMIT_STATUS;
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if (se_cmd->data_direction == DMA_FROM_DEVICE) {
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/*
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@ -718,10 +718,7 @@ static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
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qlt_xmit_tm_rsp(mcmd);
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}
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#define DATA_WORK_NOT_FREE(_flags) \
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(( _flags & (CMD_FLAG_DATA_WORK|CMD_FLAG_DATA_WORK_FREE)) == \
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CMD_FLAG_DATA_WORK)
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#define DATA_WORK_NOT_FREE(_cmd) (_cmd->data_work && !_cmd->data_work_free)
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static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
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{
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struct qla_tgt_cmd *cmd = container_of(se_cmd,
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@ -733,13 +730,13 @@ static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
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spin_lock_irqsave(&cmd->cmd_lock, flags);
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if ((cmd->state == QLA_TGT_STATE_NEW)||
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((cmd->state == QLA_TGT_STATE_DATA_IN) &&
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DATA_WORK_NOT_FREE(cmd->cmd_flags)) ) {
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cmd->cmd_flags |= CMD_FLAG_DATA_WORK_FREE;
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((cmd->state == QLA_TGT_STATE_DATA_IN) &&
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DATA_WORK_NOT_FREE(cmd))) {
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cmd->data_work_free = 1;
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spin_unlock_irqrestore(&cmd->cmd_lock, flags);
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/* Cmd have not reached firmware.
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* Use this trigger to free it. */
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/*
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* cmd has not reached fw, Use this trigger to free it.
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*/
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tcm_qla2xxx_free_cmd(cmd);
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return;
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}
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