pve-edge-kernel/patches/pve/0006-Revert-scsi-lpfc-Fix-broken-Credit-Recovery-after-dr.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Thomas Lamprecht <[email protected]>
Date: Fri, 15 May 2020 14:43:37 +0200
Subject: [PATCH] Revert "scsi: lpfc: Fix broken Credit Recovery after driver
 load"

This reverts commit 77d5805eafdb5c42bdfe78f058ad9c40ee1278b4.
We got some reports that this causes some lpfcs to report FLOGI
errors[0][1] and while the real fix is naturally something else, it
is nonexistent for now, so workaround with this revert.

[0]: https://forum.proxmox.com/threads/proxmox-6-2-lpfc-error-port-type-wrong.69680/#post-312491
[1]: https://lore.kernel.org/linux-scsi/[email protected]/
---
 drivers/scsi/lpfc/lpfc.h         |  1 -
 drivers/scsi/lpfc/lpfc_hbadisc.c | 59 +++++++++++---------------------
 2 files changed, 20 insertions(+), 40 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index 357fdec06bae..cd5525f28556 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -748,7 +748,6 @@ struct lpfc_hba {
 					 * capability
 					 */
 #define HBA_FLOGI_ISSUED	0x100000 /* FLOGI was issued */
-#define HBA_DEFER_FLOGI		0x800000 /* Defer FLOGI till read_sparm cmpl */
 
 	uint32_t fcp_ring_in_use; /* When polling test if intr-hndlr active*/
 	struct lpfc_dmabuf slim2p;
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 789eecbf32eb..95566e382b48 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -1163,16 +1163,13 @@ lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 	}
 
 	/* Start discovery by sending a FLOGI. port_state is identically
-	 * LPFC_FLOGI while waiting for FLOGI cmpl. Check if sending
-	 * the FLOGI is being deferred till after MBX_READ_SPARAM completes.
+	 * LPFC_FLOGI while waiting for FLOGI cmpl
 	 */
-	if (vport->port_state != LPFC_FLOGI) {
-		if (!(phba->hba_flag & HBA_DEFER_FLOGI))
-			lpfc_initial_flogi(vport);
-	} else {
-		if (vport->fc_flag & FC_PT2PT)
-			lpfc_disc_start(vport);
-	}
+	if (vport->port_state != LPFC_FLOGI)
+		lpfc_initial_flogi(vport);
+	else if (vport->fc_flag & FC_PT2PT)
+		lpfc_disc_start(vport);
+
 	return;
 
 out:
@@ -3097,14 +3094,6 @@ lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
 	kfree(mp);
 	mempool_free(pmb, phba->mbox_mem_pool);
-
-	/* Check if sending the FLOGI is being deferred to after we get
-	 * up to date CSPs from MBX_READ_SPARAM.
-	 */
-	if (phba->hba_flag & HBA_DEFER_FLOGI) {
-		lpfc_initial_flogi(vport);
-		phba->hba_flag &= ~HBA_DEFER_FLOGI;
-	}
 	return;
 
 out:
@@ -3235,23 +3224,6 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
 	}
 
 	lpfc_linkup(phba);
-	sparam_mbox = NULL;
-
-	if (!(phba->hba_flag & HBA_FCOE_MODE)) {
-		cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
-		if (!cfglink_mbox)
-			goto out;
-		vport->port_state = LPFC_LOCAL_CFG_LINK;
-		lpfc_config_link(phba, cfglink_mbox);
-		cfglink_mbox->vport = vport;
-		cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
-		rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
-		if (rc == MBX_NOT_FINISHED) {
-			mempool_free(cfglink_mbox, phba->mbox_mem_pool);
-			goto out;
-		}
-	}
-
 	sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 	if (!sparam_mbox)
 		goto out;
@@ -3272,7 +3244,20 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
 		goto out;
 	}
 
-	if (phba->hba_flag & HBA_FCOE_MODE) {
+	if (!(phba->hba_flag & HBA_FCOE_MODE)) {
+		cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+		if (!cfglink_mbox)
+			goto out;
+		vport->port_state = LPFC_LOCAL_CFG_LINK;
+		lpfc_config_link(phba, cfglink_mbox);
+		cfglink_mbox->vport = vport;
+		cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
+		rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
+		if (rc == MBX_NOT_FINISHED) {
+			mempool_free(cfglink_mbox, phba->mbox_mem_pool);
+			goto out;
+		}
+	} else {
 		vport->port_state = LPFC_VPORT_UNKNOWN;
 		/*
 		 * Add the driver's default FCF record at FCF index 0 now. This
@@ -3329,10 +3314,6 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
 		}
 		/* Reset FCF roundrobin bmask for new discovery */
 		lpfc_sli4_clear_fcf_rr_bmask(phba);
-	} else {
-		if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
-		    !(phba->link_flag & LS_LOOPBACK_MODE))
-			phba->hba_flag |= HBA_DEFER_FLOGI;
 	}
 
 	/* Prepare for LINK up registrations */