[SCSI] lpfc 8.3.34: Add LOGO support after ABTS compliance

Make compliant with FC specs by sending LOGO after ABTS timeouts

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 127 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
index 9133a97..d8fadcb 100644
--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -1778,6 +1778,117 @@ lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
 }
 
 static uint32_t
+lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+	struct ls_rjt     stat;
+
+	memset(&stat, 0, sizeof(struct ls_rjt));
+	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+	stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+	struct ls_rjt     stat;
+
+	memset(&stat, 0, sizeof(struct ls_rjt));
+	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+	stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag &= NLP_LOGO_ACC;
+	spin_unlock_irq(shost->host_lock);
+	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+	struct ls_rjt     stat;
+
+	memset(&stat, 0, sizeof(struct ls_rjt));
+	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+	stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+	struct ls_rjt     stat;
+
+	memset(&stat, 0, sizeof(struct ls_rjt));
+	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+	stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+	spin_unlock_irq(shost->host_lock);
+	lpfc_disc_set_adisc(vport, ndlp);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	/*
+	 * Take no action.  If a LOGO is outstanding, then possibly DevLoss has
+	 * timed out and is calling for Device Remove.  In this case, the LOGO
+	 * must be allowed to complete in state LOGO_ISSUE so that the rpi
+	 * and other NLP flags are correctly cleaned up.
+	 */
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
+			     struct lpfc_nodelist *ndlp,
+			     void *arg, uint32_t evt)
+{
+	/*
+	 * Device Recovery events have no meaning for a node with a LOGO
+	 * outstanding.  The LOGO has to complete first and handle the
+	 * node from that point.
+	 */
+	return ndlp->nlp_state;
+}
+
+static uint32_t
 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 			  void *arg, uint32_t evt)
 {
@@ -2083,6 +2194,8 @@ lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 			void *arg, uint32_t evt)
 {
 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	/* For the fabric port just clear the fc flags. */
 	if (ndlp->nlp_DID == Fabric_DID) {
 		spin_lock_irq(shost->host_lock);
 		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
@@ -2297,6 +2410,20 @@ static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
 	lpfc_device_rm_prli_issue,	/* DEVICE_RM       */
 	lpfc_device_recov_prli_issue,	/* DEVICE_RECOVERY */
 
+	lpfc_rcv_plogi_logo_issue,	/* RCV_PLOGI   LOGO_ISSUE     */
+	lpfc_rcv_prli_logo_issue,	/* RCV_PRLI        */
+	lpfc_rcv_logo_logo_issue,	/* RCV_LOGO        */
+	lpfc_rcv_padisc_logo_issue,	/* RCV_ADISC       */
+	lpfc_rcv_padisc_logo_issue,	/* RCV_PDISC       */
+	lpfc_rcv_prlo_logo_issue,	/* RCV_PRLO        */
+	lpfc_cmpl_plogi_illegal,	/* CMPL_PLOGI      */
+	lpfc_disc_illegal,		/* CMPL_PRLI       */
+	lpfc_cmpl_logo_logo_issue,	/* CMPL_LOGO       */
+	lpfc_disc_illegal,		/* CMPL_ADISC      */
+	lpfc_disc_illegal,		/* CMPL_REG_LOGIN  */
+	lpfc_device_rm_logo_issue,	/* DEVICE_RM       */
+	lpfc_device_recov_logo_issue,	/* DEVICE_RECOVERY */
+
 	lpfc_rcv_plogi_unmap_node,	/* RCV_PLOGI   UNMAPPED_NODE  */
 	lpfc_rcv_prli_unmap_node,	/* RCV_PRLI        */
 	lpfc_rcv_logo_unmap_node,	/* RCV_LOGO        */