xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
程式碼 問題 合併請求 Actions 套件 專案 版本發布 Wiki 動態

scsi: lpfc: Implement GID_PT on Nameserver query to support faster failover

瀏覽代碼 
The switches seem to respond faster to GID_PT vs GID_FT NameServer
queries.  Add support for GID_PT to be used over GID_FT to enable
faster storage failover detection. Includes addition of new module
parameter to select between GID_PT and GID_FT (GID_FT is default).

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
此提交包含在：
James Smart
2018-10-23 13:41:10 -07:00
提交者 Martin K. Petersen
父節點 d83ca3ea83
當前提交 7ea92eb458
共有 9 個檔案被更改，包括 275 行新增 和 4 行删除
下載 Patch 檔 下載差異檔 展開所有檔案 折疊所有檔案

206
drivers/scsi/lpfc/lpfc_ct.c
查看文件

@@ -831,6 +831,198 @@ out:
return;
}
static void
lpfc_cmpl_ct_cmd_gid_pt(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_vport *vport = cmdiocb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
IOCB_t *irsp;
struct lpfc_dmabuf *outp;
struct lpfc_dmabuf *inp;
struct lpfc_sli_ct_request *CTrsp;
struct lpfc_sli_ct_request *CTreq;
struct lpfc_nodelist *ndlp;
int rc;
/* First save ndlp, before we overwrite it */
ndlp = cmdiocb->context_un.ndlp;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->context_un.rsp_iocb = rspiocb;
inp = (struct lpfc_dmabuf *)cmdiocb->context1;
outp = (struct lpfc_dmabuf *)cmdiocb->context2;
irsp = &rspiocb->iocb;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_CT,
"GID_PT cmpl: status:x%x/x%x rtry:%d",
irsp->ulpStatus, irsp->un.ulpWord[4],
vport->fc_ns_retry);
/* Don't bother processing response if vport is being torn down. */
if (vport->load_flag & FC_UNLOADING) {
if (vport->fc_flag & FC_RSCN_MODE)
lpfc_els_flush_rscn(vport);
goto out;
}
if (lpfc_els_chk_latt(vport)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"4108 Link event during NS query\n");
if (vport->fc_flag & FC_RSCN_MODE)
lpfc_els_flush_rscn(vport);
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
goto out;
}
if (lpfc_error_lost_link(irsp)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"4101 NS query failed due to link event\n");
if (vport->fc_flag & FC_RSCN_MODE)
lpfc_els_flush_rscn(vport);
goto out;
}
spin_lock_irq(shost->host_lock);
if (vport->fc_flag & FC_RSCN_DEFERRED) {
vport->fc_flag &= ~FC_RSCN_DEFERRED;
spin_unlock_irq(shost->host_lock);
/* This is a GID_PT completing so the gidft_inp counter was
* incremented before the GID_PT was issued to the wire.
*/
vport->gidft_inp--;
/*
* Skip processing the NS response
* Re-issue the NS cmd
*/
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"4102 Process Deferred RSCN Data: x%x x%x\n",
vport->fc_flag, vport->fc_rscn_id_cnt);
lpfc_els_handle_rscn(vport);
goto out;
}
spin_unlock_irq(shost->host_lock);
if (irsp->ulpStatus) {
/* Check for retry */
if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
if (irsp->ulpStatus != IOSTAT_LOCAL_REJECT ||
(irsp->un.ulpWord[4] & IOERR_PARAM_MASK) !=
IOERR_NO_RESOURCES)
vport->fc_ns_retry++;
/* CT command is being retried */
vport->gidft_inp--;
rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_PT,
vport->fc_ns_retry, GID_PT_N_PORT);
if (rc == 0)
goto out;
}
if (vport->fc_flag & FC_RSCN_MODE)
lpfc_els_flush_rscn(vport);
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"4103 GID_FT Query error: 0x%x 0x%x\n",
irsp->ulpStatus, vport->fc_ns_retry);
} else {
/* Good status, continue checking */
CTreq = (struct lpfc_sli_ct_request *)inp->virt;
CTrsp = (struct lpfc_sli_ct_request *)outp->virt;
if (CTrsp->CommandResponse.bits.CmdRsp ==
cpu_to_be16(SLI_CT_RESPONSE_FS_ACC)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"4105 NameServer Rsp Data: x%x x%x\n",
vport->fc_flag,
CTreq->un.gid.Fc4Type);
lpfc_ns_rsp(vport,
outp,
CTreq->un.gid.Fc4Type,
(uint32_t)(irsp->un.genreq64.bdl.bdeSize));
} else if (CTrsp->CommandResponse.bits.CmdRsp ==
be16_to_cpu(SLI_CT_RESPONSE_FS_RJT)) {
/* NameServer Rsp Error */
if ((CTrsp->ReasonCode == SLI_CT_UNABLE_TO_PERFORM_REQ)
&& (CTrsp->Explanation == SLI_CT_NO_FC4_TYPES)) {
lpfc_printf_vlog(
vport, KERN_INFO, LOG_DISCOVERY,
"4106 No NameServer Entries "
"Data: x%x x%x x%x x%x\n",
CTrsp->CommandResponse.bits.CmdRsp,
(uint32_t)CTrsp->ReasonCode,
(uint32_t)CTrsp->Explanation,
vport->fc_flag);
lpfc_debugfs_disc_trc(
vport, LPFC_DISC_TRC_CT,
"GID_PT no entry cmd:x%x rsn:x%x exp:x%x",
(uint32_t)CTrsp->CommandResponse.bits.CmdRsp,
(uint32_t)CTrsp->ReasonCode,
(uint32_t)CTrsp->Explanation);
} else {
lpfc_printf_vlog(
vport, KERN_INFO, LOG_DISCOVERY,
"4107 NameServer Rsp Error "
"Data: x%x x%x x%x x%x\n",
CTrsp->CommandResponse.bits.CmdRsp,
(uint32_t)CTrsp->ReasonCode,
(uint32_t)CTrsp->Explanation,
vport->fc_flag);
lpfc_debugfs_disc_trc(
vport, LPFC_DISC_TRC_CT,
"GID_PT rsp err1 cmd:x%x rsn:x%x exp:x%x",
(uint32_t)CTrsp->CommandResponse.bits.CmdRsp,
(uint32_t)CTrsp->ReasonCode,
(uint32_t)CTrsp->Explanation);
}
} else {
/* NameServer Rsp Error */
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"4109 NameServer Rsp Error "
"Data: x%x x%x x%x x%x\n",
CTrsp->CommandResponse.bits.CmdRsp,
(uint32_t)CTrsp->ReasonCode,
(uint32_t)CTrsp->Explanation,
vport->fc_flag);
lpfc_debugfs_disc_trc(
vport, LPFC_DISC_TRC_CT,
"GID_PT rsp err2 cmd:x%x rsn:x%x exp:x%x",
(uint32_t)CTrsp->CommandResponse.bits.CmdRsp,
(uint32_t)CTrsp->ReasonCode,
(uint32_t)CTrsp->Explanation);
}
vport->gidft_inp--;
}
/* Link up / RSCN discovery */
if ((vport->num_disc_nodes == 0) &&
(vport->gidft_inp == 0)) {
/*
* The driver has cycled through all Nports in the RSCN payload.
* Complete the handling by cleaning up and marking the
* current driver state.
*/
if (vport->port_state >= LPFC_DISC_AUTH) {
if (vport->fc_flag & FC_RSCN_MODE) {
lpfc_els_flush_rscn(vport);
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_RSCN_MODE; /* RSCN still */
spin_unlock_irq(shost->host_lock);
} else {
lpfc_els_flush_rscn(vport);
}
}
lpfc_disc_start(vport);
}
out:
cmdiocb->context_un.ndlp = ndlp; /* Now restore ndlp for free */
lpfc_ct_free_iocb(phba, cmdiocb);
}
static void
lpfc_cmpl_ct_cmd_gff_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
@@ -1365,6 +1557,8 @@ lpfc_ns_cmd(struct lpfc_vport *vport, int cmdcode,
bpl->tus.f.bdeFlags = 0;
if (cmdcode == SLI_CTNS_GID_FT)
bpl->tus.f.bdeSize = GID_REQUEST_SZ;
else if (cmdcode == SLI_CTNS_GID_PT)
bpl->tus.f.bdeSize = GID_REQUEST_SZ;
else if (cmdcode == SLI_CTNS_GFF_ID)
bpl->tus.f.bdeSize = GFF_REQUEST_SZ;
else if (cmdcode == SLI_CTNS_GFT_ID)
@@ -1405,6 +1599,18 @@ lpfc_ns_cmd(struct lpfc_vport *vport, int cmdcode,
rsp_size = FC_MAX_NS_RSP;
break;
case SLI_CTNS_GID_PT:
CtReq->CommandResponse.bits.CmdRsp =
cpu_to_be16(SLI_CTNS_GID_PT);
CtReq->un.gid.PortType = context;
if (vport->port_state < LPFC_NS_QRY)
vport->port_state = LPFC_NS_QRY;
lpfc_set_disctmo(vport);
cmpl = lpfc_cmpl_ct_cmd_gid_pt;
rsp_size = FC_MAX_NS_RSP;
break;
case SLI_CTNS_GFF_ID:
CtReq->CommandResponse.bits.CmdRsp =
cpu_to_be16(SLI_CTNS_GFF_ID);