Initial FLOGIs are failing with the following message:
lpfc 0000:13:00.1: 1:(0):0820 FLOGI Failed (x300). BBCredit Not Supported
In a prior patch, the READ_SPARAM command was re-ordered to post after
CONFIG_LINK as the driver is expected to update the driver's copy of
the service parameters for the FLOGI payload. if the bb-credit recovery
feature is enabled, this is fine. But on adapters were bb-credit recovery
isn't enabled, it would cause the FLOGI to fail.
Fix by restoring the original command order (READ_SPARAM before
CONFIG_LINK), and after issuing CONFIG_LINK, detect bb-credit recovery
support and reissuing READ_SPARAM to obtain the updated service parameters
(effectively adding in the fix command order).
Fixes: 692fc8380ca0 ("scsi: lpfc: Fix broken Credit Recovery after driver load")
CC: <stable@xxxxxxxxxxxxxxx> # v5.7+
Signed-off-by: Dick Kennedy <dick.kennedy@xxxxxxxxxxxx>
Signed-off-by: James Smart <james.smart@xxxxxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_hbadisc.c | 76 ++++++++++++++++++++++----------
1 file changed, 52 insertions(+), 24 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 142a02114479..bf06d8549bd3 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -71,6 +71,7 @@ static void lpfc_disc_timeout_handler(struct lpfc_vport *);
static void lpfc_disc_flush_list(struct lpfc_vport *vport);
static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
static int lpfc_fcf_inuse(struct lpfc_hba *);
+static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *);
void
lpfc_terminate_rport_io(struct fc_rport *rport)
@@ -1138,11 +1139,13 @@ lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
return;
}
-
void
lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_vport *vport = pmb->vport;
+ LPFC_MBOXQ_t *sparam_mb;
+ struct lpfc_dmabuf *sparam_mp;
+ int rc;
if (pmb->u.mb.mbxStatus)
goto out;
@@ -1167,12 +1170,42 @@ 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))
+ /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
+ * bb-credit recovery is in place.
+ */
+ if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
+ !(phba->link_flag & LS_LOOPBACK_MODE)) {
+ sparam_mb = mempool_alloc(phba->mbox_mem_pool,
+ GFP_KERNEL);
+ if (!sparam_mb)
+ goto sparam_out;
+
+ rc = lpfc_read_sparam(phba, sparam_mb, 0);
+ if (rc) {
+ mempool_free(sparam_mb, phba->mbox_mem_pool);
+ goto sparam_out;
+ }
+ sparam_mb->vport = vport;
+ sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
+ rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ sparam_mp = (struct lpfc_dmabuf *)
+ sparam_mb->ctx_buf;
+ lpfc_mbuf_free(phba, sparam_mp->virt,
+ sparam_mp->phys);
+ kfree(sparam_mp);
+ sparam_mb->ctx_buf = NULL;
+ mempool_free(sparam_mb, phba->mbox_mem_pool);
+ goto sparam_out;
+ }
+
+ phba->hba_flag |= HBA_DEFER_FLOGI;
+ } else {
lpfc_initial_flogi(vport);
+ }
} else {
if (vport->fc_flag & FC_PT2PT)
lpfc_disc_start(vport);
@@ -1184,6 +1217,7 @@ lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
"0306 CONFIG_LINK mbxStatus error x%x "
"HBA state x%x\n",
pmb->u.mb.mbxStatus, vport->port_state);
+sparam_out:
mempool_free(pmb, phba->mbox_mem_pool);
lpfc_linkdown(phba);
@@ -3239,21 +3273,6 @@ 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;
@@ -3274,7 +3293,20 @@ 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
@@ -3331,10 +3363,6 @@ 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 */
--
2.26.2
