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[SCSI] lpfc 8.1.2: Modify RSCN handling to unregister rpis on lost FCP_TARGETs immediately 

Modify RSCN handling to unregister rpis on lost FCP_TARGETs immediately

Signed-off-by: Jamie Wellnitz <Jamie.Wellnitz@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Jamie Wellnitz 2006-02-28 19:25:38 -05:00 committed by James Bottomley
parent 0c6ac8efa8
commit 50eba24f2e
1 changed files with 30 additions and 1 deletions
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31
drivers/scsi/lpfc/lpfc_ct.c
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@ -323,6 +323,7 @@ lpfc_ns_rsp(struct lpfc_hba * phba, struct lpfc_dmabuf * mp, uint32_t Size)
struct lpfc_sli_ct_request *Response =
(struct lpfc_sli_ct_request *) mp->virt;
struct lpfc_nodelist *ndlp = NULL;
struct lpfc_nodelist *next_ndlp;
struct lpfc_dmabuf *mlast, *next_mp;
uint32_t *ctptr = (uint32_t *) & Response->un.gid.PortType;
uint32_t Did;
@ -391,8 +392,36 @@ lpfc_ns_rsp(struct lpfc_hba * phba, struct lpfc_dmabuf * mp, uint32_t Size)
nsout1:
list_del(&head);
/* Here we are finished in the case RSCN */
/*
* The driver has cycled through all Nports in the RSCN payload.
* Complete the handling by cleaning up and marking the
* current driver state.
*/
if (phba->hba_state == LPFC_HBA_READY) {
/*
* Switch ports that connect a loop of multiple targets need
* special consideration. The driver wants to unregister the
* rpi only on the target that was pulled from the loop. On
* RSCN, the driver wants to rediscover an NPort only if the
* driver flagged it as NLP_NPR_2B_DISC. Provided adisc is
* not enabled and the NPort is not capable of retransmissions
* (FC Tape) prevent timing races with the scsi error handler by
* unregistering the Nport's RPI. This action causes all
* outstanding IO to flush back to the midlayer.
*/
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
nlp_listp) {
if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
(lpfc_rscn_payload_check(phba, ndlp->nlp_DID))) {
if ((phba->cfg_use_adisc == 0) &&
!(ndlp->nlp_fcp_info &
NLP_FCP_2_DEVICE)) {
lpfc_unreg_rpi(phba, ndlp);
ndlp->nlp_flag &= ~NLP_NPR_ADISC;
}
}
}
lpfc_els_flush_rscn(phba);
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_RSCN_MODE; /* we are still in RSCN mode */