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[SCSI] lpfc 8.3.19: Added support for ELS RRQ command

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Added support for ELS RRQ command

- Add new routine lpfc_set_rrq_active() to track XRI qualifier state.
- Add new module parameter lpfc_enable_rrq to control RRQ operation.
- Add logic to ELS RRQ completion handler and xri qualifier timeout
  to clear XRI qualifier state.
- Use OX_ID from XRI_ABORTED_CQE for RRQ payload.
- Tie abort and XRI_ABORTED_CQE andler to RRQ generation.

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
2010-11-20 23:11:55 -05:00
committed by James Bottomley
parent 76a95d75ed
commit 19ca760979
13 changed files with 803 additions and 20 deletions
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82
drivers/scsi/lpfc/lpfc_scsi.c
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@@ -621,10 +621,13 @@ lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba,
struct sli4_wcqe_xri_aborted *axri)
{
uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
struct lpfc_scsi_buf *psb, *next_psb;
unsigned long iflag = 0;
struct lpfc_iocbq *iocbq;
int i;
struct lpfc_nodelist *ndlp;
int rrq_empty = 0;
struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
spin_lock_irqsave(&phba->hbalock, iflag);
@@ -637,8 +640,14 @@ lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba,
psb->status = IOSTAT_SUCCESS;
spin_unlock(
&phba->sli4_hba.abts_scsi_buf_list_lock);
ndlp = psb->rdata->pnode;
rrq_empty = list_empty(&phba->active_rrq_list);
spin_unlock_irqrestore(&phba->hbalock, iflag);
if (ndlp)
lpfc_set_rrq_active(phba, ndlp, xri, rxid, 1);
lpfc_release_scsi_buf_s4(phba, psb);
if (rrq_empty)
lpfc_worker_wake_up(phba);
return;
}
}
@@ -914,7 +923,7 @@ lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc)
}
/**
* lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
* lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
* @phba: The HBA for which this call is being executed.
*
* This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
@@ -925,7 +934,7 @@ lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc)
* Pointer to lpfc_scsi_buf - Success
**/
static struct lpfc_scsi_buf*
lpfc_get_scsi_buf(struct lpfc_hba * phba)
lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
{
struct lpfc_scsi_buf * lpfc_cmd = NULL;
struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list;
@@ -941,6 +950,67 @@ lpfc_get_scsi_buf(struct lpfc_hba * phba)
spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
return lpfc_cmd;
}
/**
* lpfc_get_scsi_buf_s4 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
* @phba: The HBA for which this call is being executed.
*
* This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
* and returns to caller.
*
* Return codes:
* NULL - Error
* Pointer to lpfc_scsi_buf - Success
**/
static struct lpfc_scsi_buf*
lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
{
struct lpfc_scsi_buf *lpfc_cmd = NULL;
struct lpfc_scsi_buf *start_lpfc_cmd = NULL;
struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list;
unsigned long iflag = 0;
int found = 0;
spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list);
spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
while (!found && lpfc_cmd) {
if (lpfc_test_rrq_active(phba, ndlp,
lpfc_cmd->cur_iocbq.sli4_xritag)) {
lpfc_release_scsi_buf_s4(phba, lpfc_cmd);
spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
list_remove_head(scsi_buf_list, lpfc_cmd,
struct lpfc_scsi_buf, list);
spin_unlock_irqrestore(&phba->scsi_buf_list_lock,
iflag);
if (lpfc_cmd == start_lpfc_cmd) {
lpfc_cmd = NULL;
break;
} else
continue;
}
found = 1;
lpfc_cmd->seg_cnt = 0;
lpfc_cmd->nonsg_phys = 0;
lpfc_cmd->prot_seg_cnt = 0;
}
return lpfc_cmd;
}
/**
* lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
* @phba: The HBA for which this call is being executed.
*
* This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
* and returns to caller.
*
* Return codes:
* NULL - Error
* Pointer to lpfc_scsi_buf - Success
**/
static struct lpfc_scsi_buf*
lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
{
return phba->lpfc_get_scsi_buf(phba, ndlp);
}
/**
* lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list
@@ -2744,18 +2814,19 @@ lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf;
phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd;
phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf;
switch (dev_grp) {
case LPFC_PCI_DEV_LP:
phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3;
phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3;
phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3;
phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3;
break;
case LPFC_PCI_DEV_OC:
phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4;
phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4;
phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4;
phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4;
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
@@ -2764,7 +2835,6 @@ lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
return -ENODEV;
break;
}
phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf;
phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth;
phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
return 0;
@@ -2940,7 +3010,7 @@ lpfc_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)
goto out_host_busy;
lpfc_cmd = lpfc_get_scsi_buf(phba);
lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp);
if (lpfc_cmd == NULL) {
lpfc_rampdown_queue_depth(phba);
@@ -3239,7 +3309,7 @@ lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata,
if (!pnode || !NLP_CHK_NODE_ACT(pnode))
return FAILED;
lpfc_cmd = lpfc_get_scsi_buf(phba);
lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode);
if (lpfc_cmd == NULL)
return FAILED;
lpfc_cmd->timeout = 60;