scsi: qla2xxx: Remove session creation redundant code
Current code creates a session when a new port is discovered, and a PLOGI/PRLI is received. There is no need to create session when command has arrived. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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1 changed files with 5 additions and 117 deletions
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@ -2018,15 +2018,10 @@ static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
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"qla_target(%d): task abort for non-existant session\n",
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vha->vp_idx);
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rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
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QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
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spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
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if (rc != 0) {
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qlt_24xx_send_abts_resp(ha->base_qpair, abts,
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FCP_TMF_REJECTED, false);
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}
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qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
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false);
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return;
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}
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spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
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@ -4246,87 +4241,6 @@ static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
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return cmd;
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}
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static void qlt_create_sess_from_atio(struct work_struct *work)
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{
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struct qla_tgt_sess_op *op = container_of(work,
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struct qla_tgt_sess_op, work);
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scsi_qla_host_t *vha = op->vha;
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struct qla_hw_data *ha = vha->hw;
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struct fc_port *sess;
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struct qla_tgt_cmd *cmd;
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unsigned long flags;
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uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
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spin_lock_irqsave(&vha->cmd_list_lock, flags);
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list_del(&op->cmd_list);
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spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
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if (op->aborted) {
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
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"sess_op with tag %u is aborted\n",
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op->atio.u.isp24.exchange_addr);
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goto out_term;
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}
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
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"qla_target(%d): Unable to find wwn login"
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" (s_id %x:%x:%x), trying to create it manually\n",
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vha->vp_idx, s_id[0], s_id[1], s_id[2]);
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if (op->atio.u.raw.entry_count > 1) {
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
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"Dropping multy entry atio %p\n", &op->atio);
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goto out_busy;
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}
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sess = qlt_make_local_sess(vha, s_id);
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/* sess has an extra creation ref. */
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if (!sess)
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goto out_busy;
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/*
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* Now obtain a pre-allocated session tag using the original op->atio
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* packet header, and dispatch into __qlt_do_work() using the existing
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* process context.
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*/
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cmd = qlt_get_tag(vha, sess, &op->atio);
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if (!cmd) {
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struct qla_qpair *qpair = ha->base_qpair;
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spin_lock_irqsave(qpair->qp_lock_ptr, flags);
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qlt_send_busy(qpair, &op->atio, tc_sam_status);
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spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
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spin_lock_irqsave(&ha->tgt.sess_lock, flags);
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ha->tgt.tgt_ops->put_sess(sess);
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spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
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kfree(op);
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return;
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}
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/*
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* __qlt_do_work() will call qlt_put_sess() to release
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* the extra reference taken above by qlt_make_local_sess()
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*/
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__qlt_do_work(cmd);
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kfree(op);
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return;
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out_term:
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qlt_send_term_exchange(vha->hw->base_qpair, NULL, &op->atio, 0, 0);
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kfree(op);
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return;
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out_busy:
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{
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struct qla_qpair *qpair = ha->base_qpair;
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spin_lock_irqsave(qpair->qp_lock_ptr, flags);
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qlt_send_busy(qpair, &op->atio, qla_sam_status);
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spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
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kfree(op);
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}
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return;
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}
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/* ha->hardware_lock supposed to be held on entry */
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static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
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struct atio_from_isp *atio)
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@ -4351,23 +4265,8 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
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return -EBUSY;
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sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
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if (unlikely(!sess)) {
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struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
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GFP_ATOMIC);
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if (!op)
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return -ENOMEM;
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memcpy(&op->atio, atio, sizeof(*atio));
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op->vha = vha;
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spin_lock_irqsave(&vha->cmd_list_lock, flags);
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list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
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spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
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INIT_WORK(&op->work, qlt_create_sess_from_atio);
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queue_work(qla_tgt_wq, &op->work);
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return 0;
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}
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if (unlikely(!sess))
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return -EFAULT;
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/* Another WWN used to have our s_id. Our PLOGI scheduled its
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* session deletion, but it's still in sess_del_work wq */
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@ -4477,14 +4376,11 @@ static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
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{
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struct atio_from_isp *a = (struct atio_from_isp *)iocb;
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struct qla_hw_data *ha = vha->hw;
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struct qla_tgt *tgt;
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struct fc_port *sess;
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u64 unpacked_lun;
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int fn;
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unsigned long flags;
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tgt = vha->vha_tgt.qla_tgt;
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fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
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spin_lock_irqsave(&ha->tgt.sess_lock, flags);
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@ -4495,15 +4391,7 @@ static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
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unpacked_lun =
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scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
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if (!sess) {
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
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"qla_target(%d): task mgmt fn 0x%x for "
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"non-existant session\n", vha->vp_idx, fn);
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return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
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sizeof(struct atio_from_isp));
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}
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if (sess->deleted)
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if (sess == NULL || sess->deleted)
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return -EFAULT;
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return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
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