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scsi: lpfc: Remove handler for obsolete ELS - Read Port Status (RPS)

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There was report of an odd "Fix me..." log message, which was tracked down
to the lpfc_els_rcv_rps() routine. This was in handling of a very old and
obsolete ELS - Read Port Status. The RPS ELS was defined in FC-LS-1, but
deprecated in FC-LS-2, and removed from all later FC-LS revisions. It was
replaced by the Read Diagnostic Parameters (RDP) ELS and the Link Error
Status Block descriptor.

There should be no support for the RSP ELS.  Remove support from driver.

Link: https://lore.kernel.org/r/20200128002312.16346-9-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2020-01-27 16:23:08 -08:00 committed by Martin K. Petersen
parent 4cb9e1ddaa
commit 6cde2e3e28
3 changed files with 5 additions and 209 deletions
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1
drivers/scsi/lpfc/lpfc.h
View File

@ -262,7 +262,6 @@ struct lpfc_stats {
uint32_t elsRcvPRLI;
uint32_t elsRcvLIRR;
uint32_t elsRcvRLS;
uint32_t elsRcvRPS;
uint32_t elsRcvRPL;
uint32_t elsRcvRRQ;
uint32_t elsRcvRTV;

193
drivers/scsi/lpfc/lpfc_els.c
View File

@ -7134,109 +7134,13 @@ lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
lpfc_els_free_iocb(phba, elsiocb);
}
/**
* lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
* @phba: pointer to lpfc hba data structure.
* @pmb: pointer to the driver internal queue element for mailbox command.
*
* This routine is the completion callback function for the MBX_READ_LNK_STAT
* mailbox command. This callback function is to actually send the Accept
* (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
* collects the link statistics from the completion of the MBX_READ_LNK_STAT
* mailbox command, constructs the RPS response with the link statistics
* collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
* response to the RPS.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the RPS Accept Response ELS IOCB command.
*
**/
static void
lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
MAILBOX_t *mb;
IOCB_t *icmd;
RPS_RSP *rps_rsp;
uint8_t *pcmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_nodelist *ndlp;
uint16_t status;
uint16_t oxid;
uint16_t rxid;
uint32_t cmdsize;
mb = &pmb->u.mb;
ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
rxid = (uint16_t)((unsigned long)(pmb->ctx_buf) & 0xffff);
oxid = (uint16_t)(((unsigned long)(pmb->ctx_buf) >> 16) & 0xffff);
pmb->ctx_ndlp = NULL;
pmb->ctx_buf = NULL;
if (mb->mbxStatus) {
mempool_free(pmb, phba->mbox_mem_pool);
return;
}
cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
mempool_free(pmb, phba->mbox_mem_pool);
elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
lpfc_max_els_tries, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC);
/* Decrement the ndlp reference count from previous mbox command */
lpfc_nlp_put(ndlp);
if (!elsiocb)
return;
icmd = &elsiocb->iocb;
icmd->ulpContext = rxid;
icmd->unsli3.rcvsli3.ox_id = oxid;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint32_t); /* Skip past command */
rps_rsp = (RPS_RSP *)pcmd;
if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
status = 0x10;
else
status = 0x8;
if (phba->pport->fc_flag & FC_FABRIC)
status |= 0x4;
rps_rsp->rsvd1 = 0;
rps_rsp->portStatus = cpu_to_be16(status);
rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
/* Xmit ELS RPS ACC response tag <ulpIoTag> */
lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
"0118 Xmit ELS RPS ACC response tag x%x xri x%x, "
"did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
elsiocb->iotag, elsiocb->iocb.ulpContext,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitACC++;
if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
lpfc_els_free_iocb(phba, elsiocb);
return;
}
/**
* lpfc_els_rcv_rls - Process an unsolicited rls iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Read Port Status (RPL) IOCB received as an
* This routine processes Read Link Status (RLS) IOCB received as an
* ELS unsolicited event. It first checks the remote port state. If the
* remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
* state, it invokes the lpfc_els_rsl_reject() routine to send the reject
@ -7258,7 +7162,7 @@ lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE))
/* reject the unsolicited RPS request and done with it */
/* reject the unsolicited RLS request and done with it */
goto reject_out;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
@ -7306,7 +7210,7 @@ reject_out:
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the RPS Accept Response ELS IOCB command.
* callback function to the RTV Accept Response ELS IOCB command.
*
* Return codes
* 0 - Successfully processed rtv iocb (currently always return 0)
@ -7325,7 +7229,7 @@ lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE))
/* reject the unsolicited RPS request and done with it */
/* reject the unsolicited RTV request and done with it */
goto reject_out;
cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t);
@ -7378,84 +7282,7 @@ reject_out:
return 0;
}
/* lpfc_els_rcv_rps - Process an unsolicited rps iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Read Port Status (RPS) IOCB received as an
* ELS unsolicited event. It first checks the remote port state. If the
* remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
* state, it invokes the lpfc_els_rsp_reject() routine to send the reject
* response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
* for reading the HBA link statistics. It is for the callback function,
* lpfc_els_rsp_rps_acc(), set to the MBX_READ_LNK_STAT mailbox command
* to actually sending out RPS Accept (ACC) response.
*
* Return codes
* 0 - Successfully processed rps iocb (currently always return 0)
**/
static int
lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
uint32_t *lp;
uint8_t flag;
LPFC_MBOXQ_t *mbox;
struct lpfc_dmabuf *pcmd;
RPS *rps;
struct ls_rjt stat;
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE))
/* reject the unsolicited RPS request and done with it */
goto reject_out;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
flag = (be32_to_cpu(*lp++) & 0xf);
rps = (RPS *) lp;
if ((flag == 0) ||
((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
sizeof(struct lpfc_name)) == 0))) {
printk("Fix me....\n");
dump_stack();
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
if (mbox) {
lpfc_read_lnk_stat(phba, mbox);
mbox->ctx_buf = (void *)((unsigned long)
((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) |
cmdiocb->iocb.ulpContext)); /* rx_id */
mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
mbox->vport = vport;
mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
!= MBX_NOT_FINISHED)
/* Mbox completion will send ELS Response */
return 0;
/* Decrement reference count used for the failed mbox
* command.
*/
lpfc_nlp_put(ndlp);
mempool_free(mbox, phba->mbox_mem_pool);
}
}
reject_out:
/* issue rejection response */
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
stat.un.b.vendorUnique = 0;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
return 0;
}
/* lpfc_issue_els_rrq - Process an unsolicited rps iocb
/* lpfc_issue_els_rrq - Process an unsolicited rrq iocb
* @vport: pointer to a host virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
* @did: DID of the target.
@ -8632,16 +8459,6 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_RPS:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RPS: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvRPS++;
lpfc_els_rcv_rps(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_RPL:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RPL: did:x%x/ste:x%x flg:x%x",

20
drivers/scsi/lpfc/lpfc_hw.h
View File

@ -597,7 +597,6 @@ struct fc_vft_header {
#define ELS_CMD_ADISC 0x52000000
#define ELS_CMD_FARP 0x54000000
#define ELS_CMD_FARPR 0x55000000
#define ELS_CMD_RPS 0x56000000
#define ELS_CMD_RPL 0x57000000
#define ELS_CMD_FAN 0x60000000
#define ELS_CMD_RSCN 0x61040000
@ -639,7 +638,6 @@ struct fc_vft_header {
#define ELS_CMD_ADISC 0x52
#define ELS_CMD_FARP 0x54
#define ELS_CMD_FARPR 0x55
#define ELS_CMD_RPS 0x56
#define ELS_CMD_RPL 0x57
#define ELS_CMD_FAN 0x60
#define ELS_CMD_RSCN 0x0461
@ -919,24 +917,6 @@ typedef struct _RNID { /* Structure is in Big Endian format */
} un;
} __packed RNID;
typedef struct _RPS { /* Structure is in Big Endian format */
union {
uint32_t portNum;
struct lpfc_name portName;
} un;
} RPS;
typedef struct _RPS_RSP { /* Structure is in Big Endian format */
uint16_t rsvd1;
uint16_t portStatus;
uint32_t linkFailureCnt;
uint32_t lossSyncCnt;
uint32_t lossSignalCnt;
uint32_t primSeqErrCnt;
uint32_t invalidXmitWord;
uint32_t crcCnt;
} RPS_RSP;
struct RLS { /* Structure is in Big Endian format */
uint32_t rls;
#define rls_rsvd_SHIFT 24