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[SCSI] lpfc 8.3.18: Add support of received ELS commands 

Add support of received ELS commands

- Add support for received RLS ELS command
- Add support for received ECHO ELS command
- Add support for received RTV ELS command

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
James Smart 2010-10-22 11:05:53 -04:00 committed by James Bottomley
parent 5ac6b30383
commit 12265f68ae
3 changed files with 389 additions and 2 deletions
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4
drivers/scsi/lpfc/lpfc.h
View File

@ -202,9 +202,12 @@ struct lpfc_stats {
uint32_t elsRcvPRLO;
uint32_t elsRcvPRLI;
uint32_t elsRcvLIRR;
uint32_t elsRcvRLS;
uint32_t elsRcvRPS;
uint32_t elsRcvRPL;
uint32_t elsRcvRRQ;
uint32_t elsRcvRTV;
uint32_t elsRcvECHO;
uint32_t elsXmitFLOGI;
uint32_t elsXmitFDISC;
uint32_t elsXmitPLOGI;
@ -573,6 +576,7 @@ struct lpfc_hba {
/* These fields used to be binfo */
uint32_t fc_pref_DID; /* preferred D_ID */
uint8_t fc_pref_ALPA; /* preferred AL_PA */
uint32_t fc_edtovResol; /* E_D_TOV timer resolution */
uint32_t fc_edtov; /* E_D_TOV timer value */
uint32_t fc_arbtov; /* ARB_TOV timer value */
uint32_t fc_ratov; /* R_A_TOV timer value */

346
drivers/scsi/lpfc/lpfc_els.c
View File

@ -517,6 +517,7 @@ lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
phba->fc_edtovResol = sp->cmn.edtovResolution;
phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
if (phba->fc_topology == TOPOLOGY_LOOP) {
@ -3927,6 +3928,64 @@ lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
return 0;
}
/**
* lpfc_els_rsp_echo_acc - Issue echo acc response
* @vport: pointer to a virtual N_Port data structure.
* @data: pointer to echo data to return in the accept.
* @oldiocb: pointer to the original lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* Return code
* 0 - Successfully issued acc echo response
* 1 - Failed to issue acc echo response
**/
static int
lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data,
struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli *psli;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
psli = &phba->sli;
cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len;
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC);
if (!elsiocb)
return 1;
elsiocb->iocb.ulpContext = oldiocb->iocb.ulpContext; /* Xri */
/* Xmit ECHO ACC response tag <ulpIoTag> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"2876 Xmit ECHO ACC response tag x%x xri x%x\n",
elsiocb->iotag, elsiocb->iocb.ulpContext);
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint32_t);
memcpy(pcmd, data, cmdsize - sizeof(uint32_t));
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
"Issue ACC ECHO: did:x%x flg:x%x",
ndlp->nlp_DID, ndlp->nlp_flag, 0);
phba->fc_stat.elsXmitACC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
lpfc_nlp_put(ndlp);
elsiocb->context1 = NULL; /* Don't need ndlp for cmpl,
* it could be freed */
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
* @vport: pointer to a host virtual N_Port data structure.
@ -4685,6 +4744,30 @@ lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
return 0;
}
/**
* lpfc_els_rcv_echo - Process an unsolicited echo 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.
*
* Return code
* 0 - Successfully processed echo iocb (currently always return 0)
**/
static int
lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
uint8_t *pcmd;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
/* skip over first word of echo command to find echo data */
pcmd += sizeof(uint32_t);
lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp);
return 0;
}
/**
* lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
* @vport: pointer to a host virtual N_Port data structure.
@ -4736,6 +4819,89 @@ lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
}
/**
* lpfc_els_rsp_rls_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_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
MAILBOX_t *mb;
IOCB_t *icmd;
struct RLS_RSP *rls_rsp;
uint8_t *pcmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_nodelist *ndlp;
uint16_t xri;
uint32_t cmdsize;
mb = &pmb->u.mb;
ndlp = (struct lpfc_nodelist *) pmb->context2;
xri = (uint16_t) ((unsigned long)(pmb->context1));
pmb->context1 = NULL;
pmb->context2 = NULL;
if (mb->mbxStatus) {
mempool_free(pmb, phba->mbox_mem_pool);
return;
}
cmdsize = sizeof(struct RLS_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 = xri;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint32_t); /* Skip past command */
rls_rsp = (struct RLS_RSP *)pcmd;
rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
/* Xmit ELS RLS ACC response tag <ulpIoTag> */
lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
"2874 Xmit ELS RLS 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);
}
/**
* lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
* @phba: pointer to lpfc hba data structure.
@ -4829,7 +4995,155 @@ lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
}
/**
* lpfc_els_rcv_rps - Process an unsolicited rps iocb
* 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
* 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
* 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_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
* to actually sending out RPL Accept (ACC) response.
*
* Return codes
* 0 - Successfully processed rls iocb (currently always return 0)
**/
static int
lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox;
struct lpfc_dmabuf *pcmd;
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;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
if (mbox) {
lpfc_read_lnk_stat(phba, mbox);
mbox->context1 =
(void *)((unsigned long) cmdiocb->iocb.ulpContext);
mbox->context2 = lpfc_nlp_get(ndlp);
mbox->vport = vport;
mbox->mbox_cmpl = lpfc_els_rsp_rls_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_els_rcv_rtv - Process an unsolicited rtv 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 Timout Value (RTV) 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
* response. Otherwise, it sends the Accept(ACC) response to a Read Timeout
* Value (RTV) unsolicited IOCB event.
*
* 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.
*
* Return codes
* 0 - Successfully processed rtv iocb (currently always return 0)
**/
static int
lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
struct ls_rjt stat;
struct RTV_RSP *rtv_rsp;
uint8_t *pcmd;
struct lpfc_iocbq *elsiocb;
uint32_t cmdsize;
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;
cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t);
elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
lpfc_max_els_tries, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC);
if (!elsiocb)
return 1;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint32_t); /* Skip past command */
/* use the command's xri in the response */
elsiocb->iocb.ulpContext = cmdiocb->iocb.ulpContext;
rtv_rsp = (struct RTV_RSP *)pcmd;
/* populate RTV payload */
rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */
rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov);
bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0);
bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */
rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov);
/* Xmit ELS RLS ACC response tag <ulpIoTag> */
lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
"2875 Xmit ELS RTV ACC response tag x%x xri x%x, "
"did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, "
"Data: x%x x%x x%x\n",
elsiocb->iotag, elsiocb->iocb.ulpContext,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi,
rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
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 0;
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_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.
@ -5019,7 +5333,6 @@ lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
rpl = (RPL *) (lp + 1);
maxsize = be32_to_cpu(rpl->maxsize);
/* We support only one port */
@ -5838,6 +6151,16 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_RLS:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RLS: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvRLS++;
lpfc_els_rcv_rls(vport, elsiocb, ndlp);
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",
@ -5868,6 +6191,15 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_RTV:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RTV: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvRTV++;
lpfc_els_rcv_rtv(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_RRQ:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RRQ: did:x%x/ste:x%x flg:x%x",
@ -5878,6 +6210,16 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_ECHO:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV ECHO: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvECHO++;
lpfc_els_rcv_echo(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
default:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV ELS cmd: cmd:x%x did:x%x/ste:x%x",

41
drivers/scsi/lpfc/lpfc_hw.h
View File

@ -861,6 +861,47 @@ typedef struct _RPS_RSP { /* Structure is in Big Endian format */
uint32_t crcCnt;
} RPS_RSP;
struct RLS { /* Structure is in Big Endian format */
uint32_t rls;
#define rls_rsvd_SHIFT 24
#define rls_rsvd_MASK 0x000000ff
#define rls_rsvd_WORD rls
#define rls_did_SHIFT 0
#define rls_did_MASK 0x00ffffff
#define rls_did_WORD rls
};
struct RLS_RSP { /* Structure is in Big Endian format */
uint32_t linkFailureCnt;
uint32_t lossSyncCnt;
uint32_t lossSignalCnt;
uint32_t primSeqErrCnt;
uint32_t invalidXmitWord;
uint32_t crcCnt;
};
struct RTV_RSP { /* Structure is in Big Endian format */
uint32_t ratov;
uint32_t edtov;
uint32_t qtov;
#define qtov_rsvd0_SHIFT 28
#define qtov_rsvd0_MASK 0x0000000f
#define qtov_rsvd0_WORD qtov /* reserved */
#define qtov_edtovres_SHIFT 27
#define qtov_edtovres_MASK 0x00000001
#define qtov_edtovres_WORD qtov /* E_D_TOV Resolution */
#define qtov__rsvd1_SHIFT 19
#define qtov_rsvd1_MASK 0x0000003f
#define qtov_rsvd1_WORD qtov /* reserved */
#define qtov_rttov_SHIFT 18
#define qtov_rttov_MASK 0x00000001
#define qtov_rttov_WORD qtov /* R_T_TOV value */
#define qtov_rsvd2_SHIFT 0
#define qtov_rsvd2_MASK 0x0003ffff
#define qtov_rsvd2_WORD qtov /* reserved */
};
typedef struct _RPL { /* Structure is in Big Endian format */
uint32_t maxsize;
uint32_t index;