[PATCH-v1 18/22] Add Fabric assigned WWN support.

jsmart2021
2017-04-20T04:47:30Z

From: James Smart <jsmart2021@gmail.com>

Adding support for Fabric assigned WWPN and WWNN.

Firmware sends first FLOGI to fabric with vendor version changes.
On link up driver gets updated service parameter with FAWWN assigned port
name. Driver sends 2nd FLOGI with updated fawwpn and modifies the
vport->fc_portname in driver.

Note:
Soft wwpn will not be allowed when fawwpn is enabled.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
---
drivers/scsi/lpfc/lpfc.h | 2 ++
drivers/scsi/lpfc/lpfc_attr.c | 8 ++++++++
drivers/scsi/lpfc/lpfc_els.c | 8 +++++---
drivers/scsi/lpfc/lpfc_hbadisc.c | 22 +++++++++++++++++-----
drivers/scsi/lpfc/lpfc_hw.h | 3 +++
drivers/scsi/lpfc/lpfc_hw4.h | 1 +
drivers/scsi/lpfc/lpfc_init.c | 31 ++++++++++++++++++++++++++++---
7 files changed, 64 insertions(+), 11 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index 0fc1450..6d7840b 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -474,6 +474,8 @@ struct lpfc_vport {
unsigned long rcv_buffer_time_stamp;
uint32_t vport_flag;
#define STATIC_VPORT 1
+#define FAWWPN_SET 2
+#define FAWWPN_PARAM_CHG 4

uint16_t fdmi_num_disc;
uint32_t fdmi_hba_mask;
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 4b32d02..e9d956d 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -2292,6 +2292,8 @@ lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr,
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
unsigned int cnt = count;
+ uint8_t vvvl = vport->fc_sparam.cmn.valid_vendor_ver_level;
+ u32 *fawwpn_key = (uint32_t *)&vport->fc_sparam.un.vendorVersion[0];

/*
* We're doing a simple sanity check for soft_wwpn setting.
@@ -2305,6 +2307,12 @@ lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr,
* here. The intent is to protect against the random user or
* application that is just writing attributes.
*/
+ if (vvvl == 1 && (cpu_to_be32(*fawwpn_key)) == FAPWWN_KEY_VENDOR) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+ "0051 "LPFC_DRIVER_NAME" soft wwpn can not"
+ " be enabled: fawwpn is enabled\n");
+ return -EINVAL;
+ }

/* count may include a LF at end of string */
if (buf[cnt-1] == '\n')
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index ffdcac0..35fc260 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -603,9 +603,11 @@ lpfc_check_clean_addr_bit(struct lpfc_vport *vport,
memcmp(&vport->fabric_portname, &sp->portName,
sizeof(struct lpfc_name)) ||
memcmp(&vport->fabric_nodename, &sp->nodeName,
- sizeof(struct lpfc_name)))
+ sizeof(struct lpfc_name)) ||
+ (vport->vport_flag & FAWWPN_PARAM_CHG)) {
fabric_param_changed = 1;
-
+ vport->vport_flag &= ~FAWWPN_PARAM_CHG;
+ }
/*
* Word 1 Bit 31 in common service parameter is overloaded.
* Word 1 Bit 31 in FLOGI request is multiple NPort request
@@ -8755,7 +8757,7 @@ lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
pcmd += sizeof(uint32_t); /* Node Name */
pcmd += sizeof(uint32_t); /* Node Name */
memcpy(pcmd, &vport->fc_nodename, 8);
-
+ memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
lpfc_set_disctmo(vport);

phba->fc_stat.elsXmitFDISC++;
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index d313dde..e824ec1 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -3002,6 +3002,7 @@ lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
MAILBOX_t *mb = &pmb->u.mb;
struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
struct lpfc_vport *vport = pmb->vport;
+ struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct serv_parm *sp = &vport->fc_sparam;
uint32_t ed_tov;

@@ -3031,6 +3032,7 @@ lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
}

lpfc_update_vport_wwn(vport);
+ fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
if (vport->port_type == LPFC_PHYSICAL_PORT) {
memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
@@ -3309,6 +3311,7 @@ lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
struct lpfc_sli_ring *pring;
MAILBOX_t *mb = &pmb->u.mb;
struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
+ uint8_t attn_type;

/* Unblock ELS traffic */
pring = lpfc_phba_elsring(phba);
@@ -3325,6 +3328,7 @@ lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
}

la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
+ attn_type = bf_get(lpfc_mbx_read_top_att_type, la);

memcpy(&phba->alpa_map[0], mp->virt, 128);

@@ -3337,7 +3341,7 @@ lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)

if (phba->fc_eventTag <= la->eventTag) {
phba->fc_stat.LinkMultiEvent++;
- if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)
+ if (attn_type == LPFC_ATT_LINK_UP)
if (phba->fc_eventTag != 0)
lpfc_linkdown(phba);
}
@@ -3353,7 +3357,7 @@ lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
}

phba->link_events++;
- if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) &&
+ if ((attn_type == LPFC_ATT_LINK_UP) &&
!(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
phba->fc_stat.LinkUp++;
if (phba->link_flag & LS_LOOPBACK_MODE) {
@@ -3379,8 +3383,8 @@ lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
phba->wait_4_mlo_maint_flg);
}
lpfc_mbx_process_link_up(phba, la);
- } else if (bf_get(lpfc_mbx_read_top_att_type, la) ==
- LPFC_ATT_LINK_DOWN) {
+ } else if ((attn_type == LPFC_ATT_LINK_DOWN) ||
+ (attn_type == LPFC_ATT_UNEXP_WWPN)) {
phba->fc_stat.LinkDown++;
if (phba->link_flag & LS_LOOPBACK_MODE)
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
@@ -3389,6 +3393,14 @@ lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
"Data: x%x x%x x%x\n",
la->eventTag, phba->fc_eventTag,
phba->pport->port_state, vport->fc_flag);
+ else if (attn_type == LPFC_ATT_UNEXP_WWPN)
+ lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
+ "1313 Link Down UNEXP WWPN Event x%x received "
+ "Data: x%x x%x x%x x%x x%x\n",
+ la->eventTag, phba->fc_eventTag,
+ phba->pport->port_state, vport->fc_flag,
+ bf_get(lpfc_mbx_read_top_mm, la),
+ bf_get(lpfc_mbx_read_top_fa, la));
else
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
"1305 Link Down Event x%x received "
@@ -3400,7 +3412,7 @@ lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
lpfc_mbx_issue_link_down(phba);
}
if ((phba->sli.sli_flag & LPFC_MENLO_MAINT) &&
- ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP))) {
+ (attn_type == LPFC_ATT_LINK_UP)) {
if (phba->link_state != LPFC_LINK_DOWN) {
phba->fc_stat.LinkDown++;
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h
index 15ca214..26a5647 100644
--- a/drivers/scsi/lpfc/lpfc_hw.h
+++ b/drivers/scsi/lpfc/lpfc_hw.h
@@ -509,6 +509,8 @@ struct class_parms {
uint8_t word3Reserved2; /* Fc Word 3, bit 0: 7 */
};

+#define FAPWWN_KEY_VENDOR 0x42524344 /*valid vendor version fawwpn key*/
+
struct serv_parm { /* Structure is in Big Endian format */
struct csp cmn;
struct lpfc_name portName;
@@ -2885,6 +2887,7 @@ struct lpfc_mbx_read_top {
#define LPFC_ATT_RESERVED 0x00 /* Reserved - attType */
#define LPFC_ATT_LINK_UP 0x01 /* Link is up */
#define LPFC_ATT_LINK_DOWN 0x02 /* Link is down */
+#define LPFC_ATT_UNEXP_WWPN 0x06 /* Link is down Unexpected WWWPN */
uint32_t word3;
#define lpfc_mbx_read_top_alpa_granted_SHIFT 24
#define lpfc_mbx_read_top_alpa_granted_MASK 0x000000FF
diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
index 1527770..90499f9 100644
--- a/drivers/scsi/lpfc/lpfc_hw4.h
+++ b/drivers/scsi/lpfc/lpfc_hw4.h
@@ -3853,6 +3853,7 @@ struct lpfc_acqe_fc_la {
#define LPFC_FC_LA_TYPE_NO_HARD_ALPA 0x3
#define LPFC_FC_LA_TYPE_MDS_LINK_DOWN 0x4
#define LPFC_FC_LA_TYPE_MDS_LOOPBACK 0x5
+#define LPFC_FC_LA_TYPE_UNEXP_WWPN 0x6
#define lpfc_acqe_fc_la_port_type_SHIFT 6
#define lpfc_acqe_fc_la_port_type_MASK 0x00000003
#define lpfc_acqe_fc_la_port_type_WORD word0
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 61bf14c..8acacdf 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -335,6 +335,8 @@ lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
void
lpfc_update_vport_wwn(struct lpfc_vport *vport)
{
+ uint8_t vvvl = vport->fc_sparam.cmn.valid_vendor_ver_level;
+ u32 *fawwpn_key = (u32 *)&vport->fc_sparam.un.vendorVersion[0];
/* If the soft name exists then update it using the service params */
if (vport->phba->cfg_soft_wwnn)
u64_to_wwn(vport->phba->cfg_soft_wwnn,
@@ -354,9 +356,26 @@ lpfc_update_vport_wwn(struct lpfc_vport *vport)
memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
sizeof(struct lpfc_name));

- if (vport->fc_portname.u.wwn[0] == 0 || vport->phba->cfg_soft_wwpn)
+ /*
+ * If the port name has changed, then set the Param changes flag
+ * to unreg the login
+ */
+ if ((vport->fc_portname.u.wwn[0] != 0) &&
+ memcmp(&vport->fc_portname, &vport->fc_sparam.portName,
+ sizeof(struct lpfc_name)))
+ vport->vport_flag |= FAWWPN_PARAM_CHG;
+
+ if ((vport->fc_portname.u.wwn[0] == 0) ||
+ (vport->phba->cfg_soft_wwpn) ||
+ (vvvl == 1 && (cpu_to_be32(*fawwpn_key)) == FAPWWN_KEY_VENDOR) ||
+ (vport->vport_flag & FAWWPN_SET)) {
memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
sizeof(struct lpfc_name));
+ vport->vport_flag &= ~FAWWPN_SET;
+ if (vvvl == 1 && (cpu_to_be32(*fawwpn_key)) ==
+ FAPWWN_KEY_VENDOR)
+ vport->vport_flag |= FAWWPN_SET;
+ }
else
memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
sizeof(struct lpfc_name));
@@ -4518,9 +4537,15 @@ lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
/* Parse and translate link attention fields */
la = (struct lpfc_mbx_read_top *)&pmb->u.mb.un.varReadTop;
la->eventTag = acqe_fc->event_tag;
- bf_set(lpfc_mbx_read_top_att_type, la,
- LPFC_FC_LA_TYPE_LINK_DOWN);

+ if (phba->sli4_hba.link_state.status ==
+ LPFC_FC_LA_TYPE_UNEXP_WWPN) {
+ bf_set(lpfc_mbx_read_top_att_type, la,
+ LPFC_FC_LA_TYPE_UNEXP_WWPN);
+ } else {
+ bf_set(lpfc_mbx_read_top_att_type, la,
+ LPFC_FC_LA_TYPE_LINK_DOWN);
+ }
/* Invoke the mailbox command callback function */
lpfc_mbx_cmpl_read_topology(phba, pmb);

--
2.1.0