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[SCSI] lpfc 8.3.20: Updates to FC discovery commands

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Updated commands used for ELS to utilize VPI
Allocate RPI at node creation time and pass in ELS commnads.

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 2010-12-15 17:58:10 -05:00 committed by James Bottomley
parent 2fcee4bf87
commit 4042629e42
9 changed files with 49 additions and 72 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
drivers/scsi/lpfc/lpfc_bsg.c
View file

@ -1619,7 +1619,7 @@ job_error:
* This function obtains a remote port login id so the diag loopback test
* can send and receive its own unsolicited CT command.
**/
static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t * rpi)
static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t *rpi)
{
LPFC_MBOXQ_t *mbox;
struct lpfc_dmabuf *dmabuff;
@ -1629,10 +1629,14 @@ static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t * rpi)
if (!mbox)
return -ENOMEM;
if (phba->sli_rev == LPFC_SLI_REV4)
*rpi = lpfc_sli4_alloc_rpi(phba);
status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID,
(uint8_t *)&phba->pport->fc_sparam, mbox, 0);
(uint8_t *)&phba->pport->fc_sparam, mbox, *rpi);
if (status) {
mempool_free(mbox, phba->mbox_mem_pool);
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_sli4_free_rpi(phba, *rpi);
return -ENOMEM;
}
@ -1646,6 +1650,8 @@ static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t * rpi)
kfree(dmabuff);
if (status != MBX_TIMEOUT)
mempool_free(mbox, phba->mbox_mem_pool);
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_sli4_free_rpi(phba, *rpi);
return -ENODEV;
}
@ -1682,8 +1688,9 @@ static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi)
mempool_free(mbox, phba->mbox_mem_pool);
return -EIO;
}
mempool_free(mbox, phba->mbox_mem_pool);
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_sli4_free_rpi(phba, rpi);
return 0;
}
@ -2080,7 +2087,7 @@ lpfc_bsg_diag_test(struct fc_bsg_job *job)
uint32_t size;
uint32_t full_size;
size_t segment_len = 0, segment_offset = 0, current_offset = 0;
uint16_t rpi;
uint16_t rpi = 0;
struct lpfc_iocbq *cmdiocbq, *rspiocbq;
IOCB_t *cmd, *rsp;
struct lpfc_sli_ct_request *ctreq;
@ -2167,7 +2174,6 @@ lpfc_bsg_diag_test(struct fc_bsg_job *job)
sg_copy_to_buffer(job->request_payload.sg_list,
job->request_payload.sg_cnt,
ptr, size);
rc = lpfcdiag_loop_self_reg(phba, &rpi);
if (rc)
goto loopback_test_exit;

2
drivers/scsi/lpfc/lpfc_crtn.h
View file

@ -40,7 +40,7 @@ int lpfc_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *, int);
void lpfc_read_config(struct lpfc_hba *, LPFC_MBOXQ_t *);
void lpfc_read_lnk_stat(struct lpfc_hba *, LPFC_MBOXQ_t *);
int lpfc_reg_rpi(struct lpfc_hba *, uint16_t, uint32_t, uint8_t *,
LPFC_MBOXQ_t *, uint32_t);
LPFC_MBOXQ_t *, uint16_t);
void lpfc_set_var(struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t, uint32_t);
void lpfc_unreg_login(struct lpfc_hba *, uint16_t, uint32_t, LPFC_MBOXQ_t *);
void lpfc_unreg_did(struct lpfc_hba *, uint16_t, uint32_t, LPFC_MBOXQ_t *);

2
drivers/scsi/lpfc/lpfc_disc.h
View file

@ -153,7 +153,7 @@ struct lpfc_node_rrq {
#define NLP_NODEV_REMOVE 0x08000000 /* Defer removal till discovery ends */
#define NLP_TARGET_REMOVE 0x10000000 /* Target remove in process */
#define NLP_SC_REQ 0x20000000 /* Target requires authentication */
#define NLP_RPI_VALID 0x80000000 /* nlp_rpi is valid */
#define NLP_RPI_REGISTERED 0x80000000 /* nlp_rpi is valid */
/* ndlp usage management macros */
#define NLP_CHK_NODE_ACT(ndlp) (((ndlp)->nlp_usg_map \

19
drivers/scsi/lpfc/lpfc_els.c
View file

@ -375,7 +375,8 @@ lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
err = 4;
goto fail;
}
rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox, 0);
rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox,
ndlp->nlp_rpi);
if (rc) {
err = 5;
goto fail_free_mbox;
@ -1023,7 +1024,9 @@ lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
if (sp->cmn.fcphHigh < FC_PH3)
sp->cmn.fcphHigh = FC_PH3;
if (phba->sli_rev == LPFC_SLI_REV4) {
if ((phba->sli_rev == LPFC_SLI_REV4) &&
(bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
LPFC_SLI_INTF_IF_TYPE_0)) {
elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1);
elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1);
/* FLOGI needs to be 3 for WQE FCFI */
@ -3318,14 +3321,6 @@ lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
/*
* This routine is used to register and unregister in previous SLI
* modes.
*/
if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) &&
(phba->sli_rev == LPFC_SLI_REV4))
lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi);
pmb->context1 = NULL;
pmb->context2 = NULL;
@ -7090,7 +7085,9 @@ lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
icmd->un.elsreq64.myID = 0;
icmd->un.elsreq64.fl = 1;
if (phba->sli_rev == LPFC_SLI_REV4) {
if ((phba->sli_rev == LPFC_SLI_REV4) &&
(bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
LPFC_SLI_INTF_IF_TYPE_0)) {
/* FDISC needs to be 1 for WQE VPI */
elsiocb->iocb.ulpCt_h = (SLI4_CT_VPI >> 1) & 1;
elsiocb->iocb.ulpCt_l = SLI4_CT_VPI & 1 ;

40
drivers/scsi/lpfc/lpfc_hbadisc.c
View file

@ -3102,8 +3102,8 @@ lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
/* We rcvd a rscn after issuing this
* mbox reg login, we may have cycled
* back through the state and be
@ -3115,10 +3115,6 @@ lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
spin_unlock_irq(shost->host_lock);
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_sli4_free_rpi(phba,
pmb->u.mb.un.varRegLogin.rpi);
} else
/* Good status, call state machine */
lpfc_disc_state_machine(vport, ndlp, pmb,
@ -3428,7 +3424,7 @@ lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
}
ndlp->nlp_rpi = mb->un.varWords[0];
ndlp->nlp_flag |= NLP_RPI_VALID;
ndlp->nlp_flag |= NLP_RPI_REGISTERED;
ndlp->nlp_type |= NLP_FABRIC;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
@ -3502,7 +3498,7 @@ out:
}
ndlp->nlp_rpi = mb->un.varWords[0];
ndlp->nlp_flag |= NLP_RPI_VALID;
ndlp->nlp_flag |= NLP_RPI_REGISTERED;
ndlp->nlp_type |= NLP_FABRIC;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
@ -3835,6 +3831,8 @@ lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
NLP_INT_NODE_ACT(ndlp);
atomic_set(&ndlp->cmd_pending, 0);
ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
if (vport->phba->sli_rev == LPFC_SLI_REV4)
ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba);
}
struct lpfc_nodelist *
@ -4048,7 +4046,7 @@ lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
* by firmware with a no rpi error.
*/
psli = &phba->sli;
if (ndlp->nlp_flag & NLP_RPI_VALID) {
if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
/* Now process each ring */
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
@ -4096,7 +4094,7 @@ lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
LPFC_MBOXQ_t *mbox;
int rc;
if (ndlp->nlp_flag & NLP_RPI_VALID) {
if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mbox) {
lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
@ -4108,8 +4106,9 @@ lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
}
lpfc_no_rpi(phba, ndlp);
ndlp->nlp_rpi = 0;
ndlp->nlp_flag &= ~NLP_RPI_VALID;
if (phba->sli_rev != LPFC_SLI_REV4)
ndlp->nlp_rpi = 0;
ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
ndlp->nlp_flag &= ~NLP_NPR_ADISC;
return 1;
}
@ -4141,7 +4140,7 @@ lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
shost = lpfc_shost_from_vport(vports[i]);
spin_lock_irq(shost->host_lock);
list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
if (ndlp->nlp_flag & NLP_RPI_VALID) {
if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
/* The mempool_alloc might sleep */
spin_unlock_irq(shost->host_lock);
lpfc_unreg_rpi(vports[i], ndlp);
@ -4270,9 +4269,6 @@ lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
kfree(mp);
}
list_del(&mb->list);
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_sli4_free_rpi(phba,
mb->u.mb.un.varRegLogin.rpi);
mempool_free(mb, phba->mbox_mem_pool);
/* We shall not invoke the lpfc_nlp_put to decrement
* the ndlp reference count as we are in the process
@ -4314,15 +4310,15 @@ lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
lpfc_cancel_retry_delay_tmo(vport, ndlp);
if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
!(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
!(ndlp->nlp_flag & NLP_RPI_VALID)) {
!(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
/* For this case we need to cleanup the default rpi
* allocated by the firmware.
*/
if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
!= NULL) {
rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
(uint8_t *) &vport->fc_sparam, mbox, 0);
(uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi);
if (rc) {
mempool_free(mbox, phba->mbox_mem_pool);
}
@ -5060,7 +5056,7 @@ lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
pmb->context2 = NULL;
ndlp->nlp_rpi = mb->un.varWords[0];
ndlp->nlp_flag |= NLP_RPI_VALID;
ndlp->nlp_flag |= NLP_RPI_REGISTERED;
ndlp->nlp_type |= NLP_FABRIC;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
@ -5184,6 +5180,8 @@ lpfc_nlp_release(struct kref *kref)
spin_lock_irqsave(&phba->ndlp_lock, flags);
NLP_CLR_NODE_ACT(ndlp);
spin_unlock_irqrestore(&phba->ndlp_lock, flags);
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
/* free ndlp memory for final ndlp release */
if (NLP_CHK_FREE_REQ(ndlp)) {
@ -5354,7 +5352,7 @@ lpfc_fcf_inuse(struct lpfc_hba *phba)
"logged in\n",
ndlp->nlp_rpi, ndlp->nlp_DID,
ndlp->nlp_flag);
if (ndlp->nlp_flag & NLP_RPI_VALID)
if (ndlp->nlp_flag & NLP_RPI_REGISTERED)
ret = 1;
}
}

12
drivers/scsi/lpfc/lpfc_mbox.c
View file

@ -710,7 +710,7 @@ lpfc_read_lnk_stat(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
* @did: remote port identifier.
* @param: pointer to memory holding the server parameters.
* @pmb: pointer to the driver internal queue element for mailbox command.
* @flag: action flag to be passed back for the complete function.
* @rpi: the rpi to use in the registration (usually only used for SLI4.
*
* The registration login mailbox command is used to register an N_Port or
* F_Port login. This registration allows the HBA to cache the remote N_Port
@ -729,7 +729,7 @@ lpfc_read_lnk_stat(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
**/
int
lpfc_reg_rpi(struct lpfc_hba *phba, uint16_t vpi, uint32_t did,
uint8_t *param, LPFC_MBOXQ_t *pmb, uint32_t flag)
uint8_t *param, LPFC_MBOXQ_t *pmb, uint16_t rpi)
{
MAILBOX_t *mb = &pmb->u.mb;
uint8_t *sparam;
@ -739,17 +739,13 @@ lpfc_reg_rpi(struct lpfc_hba *phba, uint16_t vpi, uint32_t did,
mb->un.varRegLogin.rpi = 0;
if (phba->sli_rev == LPFC_SLI_REV4) {
mb->un.varRegLogin.rpi = lpfc_sli4_alloc_rpi(phba);
mb->un.varRegLogin.rpi = rpi;
if (mb->un.varRegLogin.rpi == LPFC_RPI_ALLOC_ERROR)
return 1;
}
mb->un.varRegLogin.vpi = vpi + phba->vpi_base;
mb->un.varRegLogin.did = did;
mb->un.varWords[30] = flag; /* Set flag to issue action on cmpl */
mb->mbxOwner = OWN_HOST;
/* Get a buffer to hold NPorts Service Parameters */
mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
if (mp)
@ -760,7 +756,7 @@ lpfc_reg_rpi(struct lpfc_hba *phba, uint16_t vpi, uint32_t did,
/* REG_LOGIN: no buffers */
lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
"0302 REG_LOGIN: no buffers, VPI:%d DID:x%x, "
"flag x%x\n", vpi, did, flag);
"rpi x%x\n", vpi, did, rpi);
return (1);
}
INIT_LIST_HEAD(&mp->list);

16
drivers/scsi/lpfc/lpfc_nportdisc.c
View file

@ -386,7 +386,7 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
goto out;
rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
(uint8_t *) sp, mbox, 0);
(uint8_t *) sp, mbox, ndlp->nlp_rpi);
if (rc) {
mempool_free(mbox, phba->mbox_mem_pool);
goto out;
@ -632,7 +632,7 @@ lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
if (!(ndlp->nlp_flag & NLP_RPI_VALID)) {
if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
ndlp->nlp_flag &= ~NLP_NPR_ADISC;
return 0;
}
@ -968,7 +968,7 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
lpfc_unreg_rpi(vport, ndlp);
if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
(uint8_t *) sp, mbox, 0) == 0) {
(uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
switch (ndlp->nlp_DID) {
case NameServer_DID:
mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
@ -1338,12 +1338,6 @@ lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
(ndlp == (struct lpfc_nodelist *) mb->context2)) {
if (phba->sli_rev == LPFC_SLI_REV4) {
spin_unlock_irq(&phba->hbalock);
lpfc_sli4_free_rpi(phba,
mb->u.mb.un.varRegLogin.rpi);
spin_lock_irq(&phba->hbalock);
}
mp = (struct lpfc_dmabuf *) (mb->context1);
if (mp) {
__lpfc_mbuf_free(phba, mp->virt, mp->phys);
@ -1426,7 +1420,7 @@ lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
}
ndlp->nlp_rpi = mb->un.varWords[0];
ndlp->nlp_flag |= NLP_RPI_VALID;
ndlp->nlp_flag |= NLP_RPI_REGISTERED;
/* Only if we are not a fabric nport do we issue PRLI */
if (!(ndlp->nlp_type & NLP_FABRIC)) {
@ -2027,7 +2021,7 @@ lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
if (!mb->mbxStatus) {
ndlp->nlp_rpi = mb->un.varWords[0];
ndlp->nlp_flag |= NLP_RPI_VALID;
ndlp->nlp_flag |= NLP_RPI_REGISTERED;
} else {
if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
lpfc_drop_node(vport, ndlp);

13
drivers/scsi/lpfc/lpfc_sli.c
View file

@ -2116,11 +2116,6 @@ lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
kfree(mp);
}
if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) &&
(phba->sli_rev == LPFC_SLI_REV4) &&
(pmb->u.mb.un.varUnregLogin.rsvd1 == 0x0))
lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi);
/*
* If a REG_LOGIN succeeded after node is destroyed or node
* is in re-discovery driver need to cleanup the RPI.
@ -6426,11 +6421,6 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
bf_set(els_req64_vf, &wqe->els_req, 0);
/* And a VFID for word 12 */
bf_set(els_req64_vfid, &wqe->els_req, 0);
/*
* Set ct field to 3, indicates that the context_tag field
* contains the FCFI and remote N_Port_ID is
* in word 5.
*/
ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l);
bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
iocbq->iocb.ulpContext);
@ -13372,9 +13362,6 @@ lpfc_cleanup_pending_mbox(struct lpfc_vport *vport)
while (!list_empty(&mbox_cmd_list)) {
list_remove_head(&mbox_cmd_list, mb, LPFC_MBOXQ_t, list);
if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
if (phba->sli_rev == LPFC_SLI_REV4)
__lpfc_sli4_free_rpi(phba,
mb->u.mb.un.varRegLogin.rpi);
mp = (struct lpfc_dmabuf *) (mb->context1);
if (mp) {
__lpfc_mbuf_free(phba, mp->virt, mp->phys);

1
drivers/scsi/lpfc/lpfc_sli4.h
View file

@ -551,7 +551,6 @@ int lpfc_sli4_post_all_rpi_hdrs(struct lpfc_hba *);
struct lpfc_rpi_hdr *lpfc_sli4_create_rpi_hdr(struct lpfc_hba *);
void lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *);
int lpfc_sli4_alloc_rpi(struct lpfc_hba *);
void __lpfc_sli4_free_rpi(struct lpfc_hba *, int);
void lpfc_sli4_free_rpi(struct lpfc_hba *, int);
void lpfc_sli4_remove_rpis(struct lpfc_hba *);
void lpfc_sli4_async_event_proc(struct lpfc_hba *);